PRONING FRAME HEADREST TILT INDICATORS

Abstract

A head rest accessory is provided for coupling to a bed frame of a hospital bed. The head rest accessory includes a frame and a head rest mount coupled to the frame. A head rest is coupled to the head rest mount and includes a face rest shell. A first angle sensor measures a first tilt angle of the face rest shell. A second angle sensor measures a second tilt angle of the face rest shell.

Claims

1. A head rest accessory for coupling to sockets provided on a bed frame of a hospital bed adjacent a head end of the hospital bed, the head rest accessory comprising: a frame configured to be insertable downwardly into the sockets to couple the frame to the bed frame of the hospital bed so that the frame is cantilevered from the bed frame, a head rest mount coupled to the frame and being repositionable along the frame, a head rest coupled to the head rest mount, the head rest including a face rest shell having an upwardly facing concave surface and having a generally T-shaped cutout to receive a patient's eyes, nose, mouth, and a central chin region of the patient's face when the patient is in a prone position on the head rest accessory, a first angle sensor positioned along a side of the face rest shell and aligned with an eye cutout of the generally T-shaped cutout to measure a first tilt angle of the face rest shell, and a second angle sensor positioned on a head end of the face rest shell on a centerline of the face rest shell extending between the head end and a chin end of the face rest shell to measure a second tilt angle of the face rest shell.

2. The head rest accessory of claim 1, wherein the first tilt angle includes a longitudinal tilt angle.

3. The head rest accessory of claim 1, wherein the second tilt angle includes a lateral tilt angle.

4. The head rest accessory of claim 1, wherein at least one of the first angle sensor and the second angle sensor includes a spirit level vial having a bubble that indicates the angle of the face rest shell.

5. The head rest accessory of claim 1, wherein at least one of the first angle sensor and the second angle sensor includes a liquid level that indicates the angle of the face rest shell.

6. The head rest accessory of claim 5, wherein the liquid level includes an artificial horizon inclinometer.

7. The head rest accessory of claim 6, wherein the artificial horizon inclinometer indicates one of a lateral tilt angle or a longitudinal tilt angle of the face rest shell.

8. The head rest accessory of claim 6, wherein the artificial horizon inclinometer indicates both of a lateral tilt angle and a longitudinal tilt angle of the face rest shell.

9. The head rest accessory of claim 1, wherein at least one of the first angle sensor and the second angle sensor includes a plurality of markings indicative of an angle of the face rest shell.

10. The head rest accessory of claim 1, wherein at least one of the first angle sensor and the second angle sensor facilitates setting a correct position of the face rest shell according to a patient morphology.

11. The head rest accessory of claim 10, wherein at least one of the first angle sensor and the second angle sensor facilitates setting a correct position of the face rest shell before the patient's face is positioned in the face rest shell.

12. A head rest comprising: a face rest shell having an upwardly facing concave surface and having a generally T-shaped cutout to receive a patient's eyes, nose, mouth, and a central chin region of the patient's face when the patient is in a prone position on the head rest accessory, a first angle sensor positioned along a side of the face rest shell and aligned with an eye cutout of the generally T-shaped cutout to measure a first tilt angle of the face rest shell, and a second angle sensor positioned on a head end of the face rest shell on a centerline of the face rest shell extending between the head end and a chin end of the face rest shell to measure a second tilt angle of the face rest shell.

13. The head rest of claim 12, wherein the first tilt angle includes a longitudinal tilt angle.

14. The head rest of claim 12, wherein the second tilt angle includes a lateral tilt angle.

15. The head rest of claim 12, wherein at least one of the first angle sensor and the second angle sensor includes a spirit level vial having a bubble that indicates the angle of the face rest shell.

16. The head rest of claim 12, wherein at least one of the first angle sensor and the second angle sensor includes a liquid level that indicates the angle of the face rest shell.

17. The head rest of claim 16, wherein the liquid level includes an artificial horizon inclinometer.

18. The head rest of claim 17, wherein the artificial horizon inclinometer indicates at least one of a lateral tilt angle or a longitudinal tilt angle of the face rest shell.

19. The head rest of claim 12, wherein at least one of the first angle sensor and the second angle sensor includes a plurality of markings indicative of an angle of the face rest shell.

20. The head rest of claim 12, wherein the head rest is configured to couple to a bed frame of a hospital bed adjacent a head end of the hospital bed.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The detailed description particularly refers to the accompanying figures in which:

[0042] FIG. 1 is a perspective view of a patient support apparatus illustrated as a hospital bed;

[0043] FIG. 2 is a head end view of the patient support apparatus shown in FIG. 1;

[0044] FIG. 3 is a perspective view of a head rest accessory formed in accordance with an embodiment;

[0045] FIG. 4 is a perspective view of the head rest accessory shown in FIG. 3 coupled to the patient support apparatus shown in FIG. 1;

[0046] FIG. 5 is a perspective view of the head rest accessory shown in FIG. 3 having a head rest mount and face rest shell coupled thereto;

[0047] FIG. 6 is a perspective view of a face cushion positioned on the face rest shell shown in FIG. 5;

[0048] FIG. 7 is a front view of a face cushion formed in accordance with an embodiment;

[0049] FIG. 8 is a front view of a patient's face positioned in the face cushion shown in FIG. 7, wherein the face cushion is positioned in the face rest shell shown in FIG. 5;

[0050] FIG. 9 is a front view of a face rest shell formed in accordance with an embodiment and showing a downwardly facing convex surface;

[0051] FIG. 10 is a rear view of the face rest shell shown in FIG. 9 and showing an upwardly facing concave surface;

[0052] FIG. 11 is a front view of a face rest shell formed in accordance with another embodiment and showing a downwardly facing convex surface;

[0053] FIG. 12 is a rear view of the face rest shell shown in FIG. 11 and showing an upwardly facing concave surface;

[0054] FIG. 13 is a front view of a face rest shell formed in accordance with yet another embodiment and showing a downwardly facing convex surface;

[0055] FIG. 14 is a rear view of the face rest shell shown in FIG. 13 and showing an upwardly facing concave surface;

[0056] FIG. 15 is a front view of a face rest shell formed in accordance with a further embodiment and showing a downwardly facing convex surface;

[0057] FIG. 16 is a rear view of the face rest shell shown in FIG. 15 and showing an upwardly facing concave surface;

[0058] FIG. 17 is a perspective view of another patient support apparatus illustrated as a hospital bed;

[0059] FIG. 18 is a head end view of the patient support apparatus shown in FIG. 17;

[0060] FIG. 19 is a perspective view of another head rest accessory formed in accordance with an embodiment;

[0061] FIG. 20 is a perspective view of the head rest accessory shown in FIG. 19 coupled to the patient support apparatus shown in FIG. 17;

[0062] FIG. 21 is a head end view of a patient support apparatus illustrating a lateral angle of a face rest shell;

[0063] FIG. 22 is a side view of a patient support apparatus illustrating a longitudinal angle of a face rest shell;

[0064] FIG. 23 is a perspective view of an embodiment of a face rest shell having a lateral angle sensor and a longitudinal angle sensor;

[0065] FIG. 24 is a front view of the lateral angle sensor of the face rest shell of FIG. 23;

[0066] FIG. 25 is a side view of the longitudinal angle sensor of the face rest shell of FIG. 23;

[0067] FIG. 26 is a perspective view of another embodiment of a face rest shell having a lateral angle sensor and a longitudinal angle sensor;

[0068] FIG. 27 is a front view of the lateral angle sensor of the face rest shell of FIG. 26;

[0069] FIG. 28 is a side view of the longitudinal angle sensor of the face rest shell of FIG. 26;

[0070] FIG. 29 is a perspective view of yet another embodiment of a face rest shell having a lateral angle sensor and a longitudinal angle sensor;

[0071] FIG. 30 is a front view of the lateral angle sensor of the face rest shell of FIG. 29;

[0072] FIG. 31 is a side view of the longitudinal angle sensor of the face rest shell of FIG. 29;

[0073] FIG. 32 is a front view of a face rest shell formed in accordance with a further embodiment and showing a downwardly facing convex surface;

[0074] FIG. 33 is a rear view of the face rest shell shown in FIG. 32 and showing an upwardly facing concave surface; and

[0075] FIG. 34 is a front view of a face cushion formed in accordance with an embodiment.

DETAILED DESCRIPTION

[0076] While the concepts of the present disclosure are susceptible to various modifications and alternative forms, specific exemplary embodiments thereof have been shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that there is no intent to limit the concepts of the present disclosure to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

[0077] Referring to FIG. 1, a patient support apparatus 12 includes a base 34 and a deck 36 that support a patient support surface 14 above the floor. The base 34 is configured to raise and lower the deck 36 relative to the floor to raise and lower the patient support surface 14 relative to the floor. The deck 36 is articulatable and may be reconfigured to support a patient on the patient support surface 14 in a variety of positions, for example in a lie-flat position or a sit-up position (shown in FIG. 1). The patient support apparatus 12 also includes siderails 38 and headrails 40 coupled to the deck 36 to block a patient from accidentally rolling off of the patient support system 12. A foot board 60 is coupled to a foot end 72 and a headboard 62 is coupled to the head end 71 of the patient support apparatus 12.

[0078] The base 34 illustratively includes a lower frame 42 and an upper frame 44. A lift system 22 is illustratively coupled between the lower frame 42 and the upper frame 44 to raise and lower the upper frame 44 relative to the lower frame 42. The lift system 22 illustratively includes lift arms 61 that pivot relative to the lower frame 42 and the upper frame 44 to raise and lower the upper frame 44 relative to the lower frame 42.

[0079] The deck 36 illustratively includes a head-deck section 46, a seat-deck section 48, a thigh-deck section 50, and a foot-deck section 52. The head-deck section 46 is mounted to the upper frame 44 to pivot about an axis relative to the seat-deck section 48 and to slide relative to the seat-deck section 48 and the upper frame 44. The seat-deck section 48 is coupled to the upper frame 44 to move with the upper frame 44. The thigh-deck section 50 is coupled to the seat-deck section 48 to pivot relative to the seat-deck section 48. The foot-deck section 52 is coupled to the thigh-deck section 50 to pivot relative to the thigh-deck section 50. The foot-deck section 52 is also extendable and retractable to lengthen or shorten the deck 36 as desired by a caregiver or to accommodate repositioning of the deck 36.

[0080] Referring now to FIG. 2, the apparatus 12 includes the upper frame 44. A panel 100 extends outward from the upper frame 44. The panel 100 includes a pair of cavities 102 that extend from openings 104 in the panel 100. The cavities 102 are sized and shaped to retain accessories that may be used with the apparatus 12. A pair of push handles 110 extend from the panel 100. Each push handle 110 includes a flexible section 112 that enables the push handle 110 to be moved from an extended position (shown in FIG. 2) to a collapsed or storage position (shown in FIG. 4). A rod 114 extends from the flexible section 112 to a grip 116. The grip 116 enables a caregiver to grasp the push handle 110 and roll the apparatus 12 when the push handles 110 are in the extended position.

[0081] A pair of posts 120 extend upward from the upper frame 44. The posts 120 are spaced apart on the upper frame 44. The posts 120 are generally cylindrical. Each post 120 includes a socket 122 extending downward from an opening 124 in a top 126 of the post 120. The socket 122 is generally cylindrical. In some embodiments, the socket 122 is configured as a traction fixation frame socket that is configured to receive a post (not shown) of a traction fixation frame (not shown). In some embodiments, the socket 122 is configured as a headboard socket that is configured to receive a post (not shown) of a headboard (not shown). In other embodiments, the headboard includes sockets that are configured to receive each of the posts 120. In the embodiments described herein, the traction fixation frame or the headboard is removed from the upper frame 44.

[0082] Referring to FIG. 3, a head rest accessory 130 includes a frame 132 having a pair of rails 134 that extend from a proximal end 136 to a distal end 138. The frame 132 is a substantially C-shaped frame 132 and the pair of rails 134 extend substantially parallel to one another along a respective longitudinal axis 140. A crossbeam 150 extends between and is coupled to each of the pair of rails 134 at the distal end 138. The crossbeam 150 extends perpendicular to the longitudinal axis 140 of each of the pair of rails 134. In some embodiments, the rails 134 have a relatively rectangular cross-section in a vertical plane 156. In other embodiments, the rails 134 may have any suitable cross-section. In some embodiments, the cross-sectional shape of the rails 134 is in accordance with the longitudinal frame members of the Allen Advance® Table. In some embodiments, the rails 134 have the dimensions of approximately 1.5 inches (about 3.81 centimeters) high and approximately 1.25 inches (about 3.175 centimeters) wide. In some embodiments, the spacing between the rails 134 is approximately 14.5 inches (about 36.83 centimeters).

[0083] A support member 160 extends between the pairs of rails 134 at the proximal end 136 of each rail 134. The support member 160 extends orthogonal to each of the pair of rails 134. That is, the support member 160 extends perpendicular to each of the rails 134. A pair of support member ends 162 extend outward from the rails 134. That is, the rails 134 are spaced a first distance 164 apart and the support member ends 162 are spaced a second distance 166 apart, wherein the second distance 166 is greater than the first distance 164. The support member 160 extends along a longitudinal axis 170 that extends perpendicular to the longitudinal axis 140 of each of the pair of rails 134.

[0084] A post 180 is coupled to each of the support member ends 162 at the proximal end 136 of each of the pair of rails 134. Each post 180 is coupled outside of the respective rail 134. That is, the posts 180 are spaced a third distance 182 apart that is greater than the first distance 164. The third distance 182 is also greater than the second distance 166. Each post 180 is generally cylindrical and extends orthogonal to the longitudinal axis 170 of the support member ends 162 and the longitudinal axis 140 of each of the rails 134. That is, each post 180 extends perpendicular to the longitudinal axis 170 of the support member ends 162 and the longitudinal axis 140 of each of the rails 134. Each post 180 extends from a top end 184 positioned above the respective rail 134 to a bottom end 186 positioned below the respective rail 134. The post is sized and shaped to be positioned in the socket 122 of the upper frame 44.

[0085] Referring now to FIG. 4, the head rest accessary 130 is illustrated coupled to the upper frame 44 of the apparatus 12. Each of the posts 180 of the head rest accessory 130 is inserted downwardly into the socket 122 of the upper frame 44. The head rest accessory 130 is coupled to the frame 44 so that the head rest accessory 130 extends between a fixed end 200 and a cantilevered end 202. The fixed end 200 is positioned at the upper frame 44 where the posts 180 are inserted into the sockets 122. The cantilevered end 202 extends outward from the upper frame 44 past an end of the apparatus 12. The head rest accessory 130 extends from the upper frame 44 such that the head rest accessory 130 is held in a fixed position with limited give or sway at the cantilevered end 202. That is, the head rest accessory 130 is held substantially firmly to the upper frame 44.

[0086] As illustrated in FIG. 4, the push handles 110 are shown in the collapsed or stored position. That is, each push handle 110 of the pair of push handles 110 is folded at the flexible section 112 so that the push handles 110 are stowed adjacent the panel 110. The head rest accessory 130 is coupled to the upper frame 44 so that a clearance space is provided for the frame 132 of the head rest accessory 130. Accordingly, when the head rest accessory 130 is coupled to the upper frame 44, the frame 132 of the head rest accessory 130 can extend above and across the push handles 110 from the fixed end 200 to the cantilevered end 202. In some embodiments, the frame 132 may be sized and configured to extend between the push handles 110 while the push handles 110 are in the extended position.

[0087] Referring now to FIG. 5, a head rest mount 250 is coupled between the rails 134 of the accessory 130. In some embodiments, the head rest mount 250 is the same as the accessory described in U.S. Pat. No. 7,520,007, which is incorporated by referenced herein in its entirety. The head rest mount 250 includes a base 252 having a pair of ends 254. Each end 254 includes a releasable clamp 256 that can be secured to one of the rails 134. When each clamp 256 is in an unlocked condition, the mount 250 is repositionable along the rails 134. That is, the mount 250 is repositionable in a first dimension 258 along the longitudinal axes 140 of the rails 134. Additionally, the mount 250 is repositionable in the first dimension 258 along a longitudinal axis 260 of the apparatus 12. In the first dimension 258, the mount 250 is moveable away from or toward the crossbeam 150 of the frame 132. That is, the mount 250 is repositionable in the first dimension between the proximal end 136 and the distal end 138 of the frame 132. In a locked condition, the clamps 256 prevent movement of the mount 250 so that the mount 250 is locked in position relative to the rails 134.

[0088] The base 252 includes a track 262 that extends between the ends 254. A body 264 is secured to the track 262 and repositionable along the track 262. The body 264 includes a lock 266 that secures the body 264 to the track 262. When the lock 266 is in an unlocked condition, the body 264 is repositionable along the track 262 in a second dimension 270 that is perpendicular to the longitudinal axes 140 of the rails 134. The second dimension 270 is also perpendicular to the longitudinal axis 260 of the apparatus 12. In the second dimension 270, the body 264 is repositionable between the rails 134 so that the body 264 may be moved toward one of the rails 134 while being moved away from the other rail 134. When the lock 266 is in a locked condition, the lock 266 prevents movement of the body 264 along the track 262.

[0089] A mount post 280 extends vertically from the body 264 and is repositionable with the body 264. The mount post 280 extends substantially perpendicular to the longitudinal axes 140 of the rails 134. The mount post 280 also extends substantially perpendicular to the longitudinal axis 260 of the apparatus 12. A mount rail 282 extends substantially perpendicular from the mount post 180. The mount rail 282 extends substantially parallel to the longitudinal axes 140 of the rails 134 and the longitudinal axis 260 of the apparatus 12. The mount rail 282 extends in a proximal direction toward the proximal end 136 of the frame 132.

[0090] The mount rail 282 includes a body 290 that is repositionable along the mount post 280 in a third vertical dimension 292. A lock 294 secures the body 290 to the mount post 280. When the lock 294 is in an unlocked condition, the body 290 moves along the mount post 280 in the third dimension so that the body 290 is raised or lowered relative to the frame 132 of the accessory 130. The third dimension 292 is perpendicular to both the first dimension 258 and the second dimension 270. That is, the first dimension 258 and second dimensions 270 are positioned in a horizontal plane, and the third dimension 292 is positioned in a vertical plane. When the lock 294 is in a locked condition, the lock 294 prevents the body 290 from moving relative to the mount post 280.

[0091] The mount rail 282 also includes a rod 300 that extends from the body 290 substantially perpendicular to both the longitudinal axes 140 of the rails 134 and the longitudinal axis 260 of the apparatus 12. The rod 300 extends from the body 290 toward the proximal end 136 of the frame 132. The rod 300 includes a cantilevered end 302. A face rest shell 310 is coupled to the cantilevered end 302. By moving the components of the head rest mount 250 as described above, the face rest shell 310 is movable in the first dimension 258, the second dimension 270, and the third dimension 292. Additionally, the cantilevered end 302 includes a ball joint (not shown). The face rest shell 310 is coupled to the ball joint to enable the face rest shell 310 to pitch in the rotational direction 305, yaw in the rotational direction 307, and roll in the rotational direction 309. The face rest shell 310 includes an upwardly facing concave surface 314. The face rest shell 310 also includes a generally T-shaped cutout 316 to receive a patient's eyes, nose, mouth, and a central chin region of the patient's face when the patient is in a prone position on the head rest accessory 130, as illustrated in FIG. 8. Various embodiments, of the face rest shell 310 are described in more detail below.

[0092] The face rest shell 310 also includes a face cushion 320 that is positioned on the face rest shell 310, as illustrated in FIG. 6. Referring to FIG. 7, the face cushion 320 includes a surface 322 that is sized and shaped to the patient's face. The face cushion 320 also includes a generally T-shaped cutout 324 to receive a patient's eyes, nose, mouth, and a central chin region of the patient's face when the patient is in a prone position on the head rest accessory, as illustrated in FIG. 8.

[0093] Referring to FIG. 7, the face cushion 320 includes a top end 330 and a bottom end 332. The top end 330 is configured to receive the patient's forehead and the bottom end 332 is configured to receive the patient's chin. An opening 334 is formed in the bottom end 332. The cutout 324 extends from the opening 334 toward the top end 330. The cutout 324 includes a chin section 340 having a width 342 and configured to receive the patient's chin. A cheek bone relief section 344 extends from the chin section 340 and is defined by a pair of curved contours 346 that are shaped to the patient's cheek bones. The cheek bone relief section 344 extends a width 348 that is greater than the width 342. An eye section 350 extends from the cheek bone relief section 344 and has a width 352 that is greater than the width 348. The eye section 350 is generally oblong in shape and provides an opening for the patient's eye sockets.

[0094] Referring now to FIG. 9, a face rest shell 400 includes an outer perimeter 402 defined by an outer edge 404. The outer edge 404 includes a top outer edge 406 and a pair of planar side outer edges 408. In the illustrative embodiment, the top outer edge 406 is partially circular. The top outer edge 406 is coupled to each of the side outer edges 408 by a respective curved outer edge 410. The side outer edges 408 extend between the top outer edge 406 and a bottom outer edge 420. The bottom outer edge 420 includes a pair of planar bottom outer edges 422. Each of the pair of planar bottom edges 422 is coupled to a respective side outer edge 408 by an angled outer edge 424. The planar bottom outer edges 422 extend substantially perpendicular to the pair of side outer edges 408.

[0095] An opening 430 is formed in the bottom outer edge 420. That is, the opening 430 is formed between the pair of planar bottom outer edges 422. A cutout 432 extends from the opening 430 toward the top outer edge 406. The cutout 432 is generally T-shaped and defined by an inner edge 434. The cutout 432 includes a mouth cutout 436 that extends from the opening 430. An eye cutout 438 extends from the mouth cutout 436 toward the top outer edge 406. A downwardly facing convex surface 440 extends between the outer edge 404 and the inner edge

[0096] Referring to FIG. 10, the face rest shell 400 includes an upwardly facing concave surface 450 extending between the outer edge 404 and the inner edge 434. The mouth cutout 436 includes a pair of side mouth inner edges 452 extending from the opening 430 to a cheek rest 454 that flares inward. The pair of side mouth inner edges 452 each include a plurality of side mouth inner edges 464, wherein at least one of the plurality of side mouth inner edges 464 is substantially arcuate. A cheek rest opening 456 is defined between an inwardly most point 458 of each of the cheek rests 454. In the illustrated embodiment, the cheek rest opening 456 has a width 460 that is less than a width 462 of the opening 430.

[0097] The eye cutout 438 extends from the mouth cutout 436. The eye cutout 438 extends from the cheek rest opening 456. The eye cutout 438 includes a pair of curved inner edges 470 that extend from the cheek rest opening 456 to a planar top inner edge 472. The pair of curved inner edge 470 are substantially arcuate. The top inner edge 472 extends substantially perpendicular to the side outer edges 408. The top inner edge 472 also extends substantially parallel to the bottom outer edge 420. Each cheek rest 454 is defined between the mouth cutout 436 and the eye cutout 438 so that each cheek rest 454 is defined at least partially by a respective side mouth inner edge 452 of the mouth cutout 436 and at least partially by a respective curved inner edge 470 of the eye cutout 438.

[0098] A top wall 401 extends from the top outer edge 406. In the illustrative embodiment, the top wall 401 extends upwardly from the upwardly facing concave surface 450. A pair of side walls 403 extend from the each of the planar side outer edges 408. In the illustrative embodiment, each of the pair of side walls 403 extends upwardly from the upwardly facing concave surface 450. The top wall 401 and the side walls 403 collectively retain the face cushion 320 on the upwardly facing concave surface 450.

[0099] Referring now to FIG. 11, a face rest shell 500 includes an outer perimeter 502 defined by an outer edge 504. The outer edge 504 includes a top outer edge 506 and a pair of planar side outer edges 508. In the illustrative embodiment, the top outer edge 506 is partially circular. The top outer edge 506 is coupled to each of the side outer edges 508 by a respective curved outer edge 510. The side outer edges 508 extend between the top outer edge 506 and a bottom outer edge 520. The bottom outer edge 520 includes a pair of planar bottom outer edges 522. Each of the pair of planar bottom edges 522 is coupled to a respective side outer edge 508 by an angled outer edge 524. The planar bottom outer edges 522 extend substantially perpendicular to the pair of side outer edges 508.

[0100] An opening 530 is formed in the bottom outer edge 520. That is, the opening 530 is formed between the pair of planar bottom outer edges 522. A cutout 532 extends from the opening 530 toward the top outer edge 506. The cutout 532 is generally T-shaped and defined by an inner edge 534. The cutout 532 includes a mouth cutout 536 that extends from the opening 530. An eye cutout 538 extends from the mouth cutout 536 toward the top outer edge 506. A downwardly facing convex surface 540 extends between the outer edge 504 and the inner edge 534.

[0101] Referring to FIG. 12, the face rest shell 500 includes an upwardly facing concave surface 550 extending between the outer edge 504 and the inner edge 534. The mouth cutout 536 includes a pair of side mouth inner edges 552 extending from the opening 530 to a cheek rest 554 that flares inward. The pair of side mouth inner edges 552 each include a plurality of side mouth inner edges 564, wherein at least one of the plurality of side mouth inner edges 564 is substantially circular. A cheek rest opening 556 is defined between an inwardly most point 558 of each of the cheek rests 554. In the illustrated embodiment, the cheek rest opening 556 has a width 560 that is substantially equal to a width 562 of the opening 530.

[0102] The eye cutout 538 extends from the mouth cutout 536. The eye cutout 538 extends from the cheek rest opening 556. The eye cutout 538 includes a pair of curved inner edges 570 that extend from the cheek rest opening 556 to a planar top inner edge 572. The pair of curved inner edge 570 are substantially circular. The top inner edge 572 extends substantially perpendicular to the side outer edges 508. The top inner edge 572 also extends substantially parallel to the bottom outer edge 520. Each cheek rest 554 is defined between the mouth cutout 536 and the eye cutout 538 so that each cheek rest 554 is defined at least partially by a respective side mouth inner edge 552 of the mouth cutout 536 and at least partially by a respective curved inner edge 570 of the eye cutout 538.

[0103] A top wall 501 extends from the top outer edge 506. In the illustrative embodiment, the top wall 501 extends upwardly from the upwardly facing concave surface 550.

[0104] A pair of side walls 503 extend from the each of the planar side outer edges 508. In the illustrative embodiment, each of the pair of side walls 503 extends upwardly from the upwardly facing concave surface 550. The top wall 501 and the side walls 503 collectively retain the face cushion 520 on the upwardly facing concave surface 550.

[0105] Referring now to FIG. 13, a face rest shell 600 includes an outer perimeter 602 defined by an outer edge 604. The outer edge 604 includes a top outer edge 606 and a pair of planar side outer edges 608. In the illustrative embodiment, the top outer edge 606 is partially circular. The top outer edge 606 is coupled to each of the side outer edges 608 by a respective curved outer edge 610. The side outer edges 608 extend between the top outer edge 606 and a bottom outer edge 620. The bottom outer edge 620 includes a pair of planar bottom outer edges 622. Each of the pair of planar bottom edges 622 is coupled to a respective side outer edge 608 by an angled outer edge 624. The planar bottom outer edges 622 extend substantially perpendicular to the pair of side outer edges 608.

[0106] An opening 630 is formed in the bottom outer edge 620. That is, the opening 630 is formed between the pair of planar bottom outer edges 622. A cutout 632 extends from the opening 630 toward the top outer edge 606. The cutout 632 is generally T-shaped and defined by an inner edge 634. The cutout 632 includes a mouth cutout 636 that extends from the opening 630. An eye cutout 638 extends from the mouth cutout 636 toward the top outer edge 606. A downwardly facing convex surface 640 extends between the outer edge 604 and the inner edge 634.

[0107] Referring to FIG. 14, the face rest shell 600 includes an upwardly facing concave surface 650 extending between the outer edge 604 and the inner edge 634. The mouth cutout 636 includes a pair of side mouth inner edges 652 extending from the opening 630 to a cheek rest 654 that flares inward. The pair of side mouth inner edges 652 each include a plurality of side mouth inner edges 664, wherein at least one of the plurality of side mouth inner edges 664 is substantially circular. A cheek rest opening 656 is defined between an inwardly most point 658 of each of the cheek rests 654. In the illustrated embodiment, the cheek rest opening 656 has a width 660 that is substantially equal to a width 662 of the opening 630.

[0108] The eye cutout 638 extends from the mouth cutout 636. The eye cutout 638 extends from the cheek rest opening 656. The eye cutout 638 includes a pair of curved inner edges 670 that extend from the cheek rest opening 656 to a planar top inner edge 672. The pair of curved inner edge 670 are substantially circular. The top inner edge 672 extends substantially perpendicular to the side outer edges 608. The top inner edge 672 also extends substantially parallel to the bottom outer edge 620. Each cheek rest 654 is defined between the mouth cutout 636 and the eye cutout 638 so that each cheek rest 654 is defined at least partially by a respective side mouth inner edge 652 of the mouth cutout 636 and at least partially by a respective curved inner edge 670 of the eye cutout 638.

[0109] Each cheek rest 654 includes a cheek rest relief surface 680 formed in the upwardly facing concave surface 650. The cheek rest relief surface 680 is a concave surface having a radius of curvature that differs from a radius of curvature of the upwardly facing concave surface 650. A perimeter 682 of each cheek rest relief surface 680 is defined by a portion of the respective curved inner edge 670 of the eye cutout 638 and a curved bottom relief edge 684. The cheek rest relief surface 680 is configured to reduce pressure on the patient's cheeks when the patient is positioned in a prone position on the face rest shell 600.

[0110] A top wall 601 extends from the top outer edge 606. In the illustrative embodiment, the top wall 601 extends upwardly from the upwardly facing concave surface 650. A pair of side walls 603 extend from the each of the planar side outer edges 608. In the illustrative embodiment, each of the pair of side walls 603 extends upwardly from the upwardly facing concave surface 650. The top wall 601 and the side walls 603 collectively retain the face cushion 620 on the upwardly facing concave surface 650.

[0111] Referring now to FIG. 15, a face rest shell 700 includes an outer perimeter 702 defined by an outer edge 704. The outer edge 704 includes a top outer edge 706 and a pair of planar side outer edges 708. In the illustrative embodiment, the top outer edge 706 is partially circular. The top outer edge 706 is coupled to each of the side outer edges 708 by a respective curved outer edge 710. The side outer edges 708 extend between the top outer edge 706 and a bottom outer edge 720. The bottom outer edge 720 includes a pair of planar bottom outer edges 722. Each of the pair of planar bottom edges 722 is coupled to a respective side outer edge 708 by an angled outer edge 724. The planar bottom outer edges 722 extend substantially perpendicular to the pair of side outer edges 708.

[0112] An opening 730 is formed in the bottom outer edge 720. That is, the opening 730 is formed between the pair of planar bottom outer edges 722. A cutout 732 extends from the opening 730 toward the top outer edge 706. The cutout 732 is generally T-shaped and defined by an inner edge 734. The cutout 732 includes a mouth cutout 736 that extends from the opening 730. An eye cutout 738 extends from the mouth cutout 736 toward the top outer edge 706. A downwardly facing convex surface 740 extends between the outer edge 704 and the inner edge 734.

[0113] Referring to FIG. 16, the face rest shell 700 includes an upwardly facing concave surface 750 extending between the outer edge 704 and the inner edge 734. The mouth cutout 736 includes a pair of side mouth inner edges 752 extending from the opening 730 to a cheek rest 754 that flares inward. The pair of side mouth inner edges 752 each include a plurality of side mouth inner edges 764, wherein at least one of the plurality of side mouth inner edges 764 is substantially planar. A cheek rest opening 756 is defined between an inwardly most point 758 of each of the cheek rests 754. In the illustrated embodiment, the cheek rest opening 756 has a width 760 that is less than a width 762 of the opening 730.

[0114] The eye cutout 738 extends from the mouth cutout 736. The eye cutout 738 extends from the cheek rest opening 756. The eye cutout 738 includes a pair of curved inner edges 770 that extend from the cheek rest opening 756 to a planar top inner edge 772. The pair of curved inner edge 770 are at least partially circular. The top inner edge 772 extends substantially perpendicular to the side outer edges 708. The top inner edge 772 also extends substantially parallel to the bottom outer edge 720. Each cheek rest 754 is defined between the mouth cutout 736 and the eye cutout 738 so that each cheek rest 754 is defined at least partially by a respective side mouth inner edge 752 of the mouth cutout 736 and at least partially by a respective curved inner edge 770 of the eye cutout 738.

[0115] A top wall 701 extends from the top outer edge 706. In the illustrative embodiment, the top wall 701 extends upwardly from the upwardly facing concave surface 750. A pair of side walls 703 extends from the each of the planar side outer edges 708. In the illustrative embodiment, each of the pair of side walls 703 extends upwardly from the upwardly facing concave surface 750. The top wall 701 and the side walls 703 collectively retain the face cushion 720 on the upwardly facing concave surface 750.

[0116] Referring now to FIG. 17, there is shown an exemplary patient support apparatus, illustratively embodied as a bed 800. Bed 800 generally includes a head end 826 and a foot end 828, a base 830, a frame 832 supported above the base 830 by a lift mechanism 834, a mattress support deck 836, a mattress 838, wheels or casters 840, and a number of barrier elements 842.

[0117] The mattress 838 defines a person-support surface 854 which is bounded by the barrier elements 842, In particular, the person-support surface 854 is generally surrounded by a headboard 843 mounted to the head end 826 of the base 830 of the bed 800, a footboard 844 mounted to the mattress support deck 836 at a foot end 828 of the bed 800, a pair of siderails 846 and 848 mounted to the mattress support deck 836 adjacent to one side of the mattress 838, and another pair of siderails 850 and 852 mounted to the mattress support deck 836 adjacent to an opposite side of the mattress 838. Some, or all, of the barrier elements 842 may be movable relative to the person-support surface 854, such that a patient's egress is impeded when the barrier elements 842 are in an “up” position, but the patient's egress is allowed when one or more of the barrier elements 842 are in a “down” position.

[0118] The bed 800 is configured to adjustably position the mattress support deck 836 (and, hence, the mattress 838 and the person-support surface 854) relative to the base 830. For instance, the lift mechanism 834 of bed 800 is operable to raise and lower the height of the frame 832 and the mattress support deck 836 above the base 830. In some embodiments, the mattress support deck 836 may be articulated, allowing further repositioning of the person-support surface 854. In such embodiments, separate sections of the articulated mattress support deck 836 may be repositioned relative to the frame 832 and relative to each other. The mattress support deck 836 may, for example, be adjustably positioned in a general incline from the head end 826 to the foot end 828, or vice versa. Additionally, the mattress deck 836 may be adjustably positioned such that an upper torso area of the mattress 838 is positioned between minimum and maximum incline angles (e.g., 0-54 degrees) relative to horizontal or bed flat, and the mattress support deck 836 may also be adjustably positioned such that a thigh area of the mattress 838 is positioned between minimum and maximum bend angles (e.g., 0-35 degrees) relative to horizontal or bed flat. The mattress support deck 836 or portions thereof may be adjustably positioned in other orientations, and such other orientations are contemplated by this disclosure.

[0119] Various structures and devices may be provided to adjustably position the mattress support deck 836. Such structures and devices may include, for example, linkages, drives, and other mechanical or electrometrical movement members coupled between the base 830 and the frame 832 and/or between the frame 832 and mattress support deck 836. In some embodiments, the mattress 838 may include a number of air bladders that may be used to provide positioning and/or therapy, for example, pressure redistribution therapy, rotational therapy, percussion therapy, vibration therapy, low air loss therapy, and positioning to assist turning of a patient. In such embodiments, the bed 800 may include structures and devices (e.g., a pneumatic control system) to selectively inflate and deflate the air bladders of the mattress 838. It will be appreciated that the bed 800 may include other known electrical and electromechanical devices that provide additional functions and features. For instance, in some embodiments, a number of sensors may be provided to enable automatic detection of a change in the status of the bed 800. By way of illustrative example, the bed 800 may include one or more sensors which detect a change in the position of the support surface 854 or a portion thereof and/or one or more siderail sensors which detect whether each siderail 846-852 is being raised or lowered or is in an “up” or “down” position.

[0120] Referring now to FIG. 18, the bed 800 includes the base 830. The base 830 includes a pair of sockets 922 that are generally cylindrical. In some embodiments, the sockets 922 are configured as a traction fixation frame socket that is configured to receive a post (not shown) of a traction fixation frame (not shown). In some embodiments, the sockets 922 are configured as instrument sockets that are configured to receive an instrument, e.g. an intravenous assembly post (not shown). Another pair of sockets 924 are configured to receive push handles (not shown).

[0121] Referring to FIG. 19, a head rest accessory 930 includes a frame 932 having a pair of rails 934 that extend from a proximal end 936 to a distal end 938. The frame 932 is a substantially C-shaped frame 932 and the pair of rails 934 extend substantially parallel to one another along a respective longitudinal axis 940. A crossbeam 950 extends between and is coupled to each of the pair of rails 934 at the distal end 938. The crossbeam 950 extends perpendicular to the longitudinal axis 940 of each of the pair of rails 934. In some embodiments, the rails 934 have a relatively rectangular cross-section in a vertical plane 956. In other embodiments, the rails 934 may have any suitable cross-section. In some embodiments, the cross-sectional shape of the rails 934 is in accordance with the longitudinal frame members of the Allen Advance® Table. In some embodiments, the rails 934 have the dimensions of approximately 1.5 inches (about 3.81 centimeters) high and approximately 1.25 inches (about 3.175 centimeters) wide. In some embodiments, the spacing between the rails 934 is approximately 14.5 inches (about 36.83 centimeters).

[0122] A support member 960 extends between the pairs of rails 934 at the proximal end 936 of each rail 934. A brace 961 is coupled to the support member 960 and each rail 934. The support member 960 extends orthogonal to each of the pair of rails 934. That is, the support member 960 extends perpendicular to each of the rails 934. A pair of support member ends 962 extend outward from the rails 934. That is, the rails 934 are spaced a first distance 964 apart and the support member ends 962 are spaced a second distance 966 apart, wherein the second distance 966 is greater than the first distance 964. The support member 960 extends along a longitudinal axis 970 that extends perpendicular to the longitudinal axis 940 of each of the pair of rails 934.

[0123] A post 980 is coupled to each of the support member ends 962 at the proximal end 936 of each of the pair of rails 934. Each post 980 is coupled outside of the respective rail 934. That is, the posts 980 are spaced a third distance 982 apart that is greater than the first distance 964. The third distance 982 is also greater than the second distance 966. Each post 980 is generally cylindrical and extends orthogonal to the longitudinal axis 970 of the support member ends 962 and the longitudinal axis 940 of each of the rails 934. That is, each post 980 extends perpendicular to the longitudinal axis 970 of the support member ends 962 and the longitudinal axis 940 of each of the rails 934. Each post 980 extends from a top end 984 positioned above the respective rail 934 to a bottom end 986 positioned below the respective rail 934. The post 980 is sized and shaped to be positioned in the socket 922 of the base 830.

[0124] Each post 980 includes an upper end 990 and a lower end 992 extending from the upper end 990. The upper end 990 has a diameter that is greater than a diameter of the lower end 992. The lower end 992 is sized and shaped to be received in a socket 922 of the base 830. When the lower end 992 is positioned in the socket 922 that diameter of the upper end 990 prevents the upper end 990 from being inserted into the socket 922. Accordingly, the upper end 990 rests on and extends above the socket 992 to raise the frame 930 relative to the base 830.

[0125] Referring now to FIG. 20, the head rest accessary 930 is illustrated coupled to the base 830 of the bed 800. Each of the posts 980 of the head rest accessory 930 is inserted downwardly into the socket 922 of the base 830. The head rest accessory 930 is coupled to the base 830 so that the head rest accessory 930 extends between a fixed end 1000 and a cantilevered end 1002. The fixed end 1000 is positioned at the base 830 where the posts 980 are inserted into the sockets 922. The cantilevered end 1002 extends outward from the base 830 past an end of the bed 800. The head rest accessory 930 extends from the base 830 such that the head rest accessory 930 is held in a fixed position with limited give or sway at the cantilevered end 1002. That is, the head rest accessory 930 is held substantially firmly to the base 830. Although not illustrated, the push handles (not shown) are folded to a collapsed position when the head rest accessory 930 is inserted into the sockets 922.

[0126] The head rest accessory 930 is configured to be used with the head rest mount 250 described above. That is, the head rest mount 250 is configured to couple between the rails 934 of the head rest accessory 930. Additionally, the head rest accessory 930 may be utilized with any of face rest shell 400, face rest shell 500, face rest shell 600, and face rest shell 700, as described above. Moreover, the head rest accessory 930 is configured to be utilized with the face cushion 320, described above.

[0127] Referring to FIG. 21, a patient support apparatus 1000 is illustrated having a head rest accessory 1002 extending therefrom. A face rest shell 1006 is coupled to an end 1008 of the frame 1002. In some embodiments, the patient support apparatus 1000 may be the patient support apparatus 12 or 800. The head rest accessory 1002 may be the head rest accessory 130 or 930, in some embodiments. Additionally, in some embodiments, the face rest shell 1006 may be any one of face rest shells 310, 400, 500, 600, or 700. FIG. 21 illustrates a head end 1020 of the patient support apparatus 1000, wherein the face rest shell 1006 extends from the head end 1020. A patient 1022 is positioned in a prone position on the patient support apparatus 1000. The patient's head 1024 is positioned in the face rest shell 1006.

[0128] A lateral axis 1030 extends between a first side 1032 and a second side 1034 of the patient support apparatus 1000. The face rest shell 1006 is configured to be positioned relative to the lateral axis 1030. That is, as described above, the face rest shell 1006 may be rolled relative to the lateral axis 1030. In the illustrated embodiment, the face rest shell 1006 is shown rolled to a lateral angle 1040. The lateral angle 1040 may be any suitable angle greater than 0 degrees that accommodates a morphology of the patient 1022 when the patient's head 1024 is positioned in the face rest shell 1006. Altering the lateral angle 1040 facilitates improving patient comfort and reducing pressure sores on the patient. A caregiver may alter the lateral angle 1040 before the patient's head 1024 is positioned in the face rest shell 1006 utilizing sensors, as described in more detail below. Additionally, the lateral angle 1040 may be further adjusted after the patient's head 1024 is positioned in the face rest shell 1006 utilizing the sensors described below. Although FIG. 21 illustrates the face rest shell 1006 rolled in one direction, it will be appreciated that the face rest shell 1006 may be rolled in either direction.

[0129] Referring now to FIG. 22, the patient support apparatus 1000 extends between the head end 1020 and a foot end 1050. The patient 1022 is positioned on the patient support apparatus 1000 in a prone position between the head end 1020 and the foot end 1050. The patient's head 1024 extends from the head end 1020 of the patient support apparatus 1000 and is positioned in the face rest shell 1006.

[0130] A longitudinal axis 1052 extends between the head end 1020 and the foot end 1050 of the patient support apparatus 1000. The face rest shell 1006 is configured to be positioned relative to the longitudinal axis 1052. That is, as described above, the face rest shell 1006 may be pitched relative to the longitudinal axis 1052. In the illustrated embodiment, the face rest shell 1006 is shown pitched to a longitudinal angle 1054. The longitudinal angle 1054 may be any suitable angle greater than 0 degrees that accommodates a morphology of the patient 1022 when the patient's head 1024 is positioned in the face rest shell 1006. Altering the longitudinal angle 1054 facilitates improving patient comfort and reducing pressure sores on the patient. A caregiver may alter the longitudinal angle 1054 before the patient's head 1024 is positioned in the face rest shell 1006 utilizing sensors, as described in more detail below. Additionally, the longitudinal angle 1054 may be further adjusted after the patient's head 1024 is positioned in the face rest shell 1006 utilizing the sensors described below. Although FIG. 22 illustrates the face rest shell 1006 pitch in one direction, it will be appreciated that the face rest shell 1006 may be pitched in either direction.

[0131] Referring to FIG. 23, the face rest shell 1006 includes a head end 1100 and an opposite chin end 1102. A pair of sides 1104 extends between the head end 1100 and the chin end 1102. A centerline 1106 that is substantially equidistant from each side 1104 extends substantially parallel to the sides 1104 between the head end 1100 and the chin end 1102. An opening 1108 is formed in the chin end 1102. A generally T-shaped cutout 1110 extends from the opening 1108 toward the head end 1100. The generally T-shaped cutout 1110 includes chin cutout 1112 that extends from the opening 1108. A nose cutout 1114 extends from the chin cutout 1112 toward the head end 1100, and an eye cutout 1116 extends from the nose cutout 1114 toward the head end 1100.

[0132] A lateral sensor 1120 is positioned on the head end 1100 and aligned with the centerline 1106. The lateral sensor 1120 extends across the head end 1100 between the sides 1104. The lateral sensor 1120 is configured to measure the lateral angle 1040 of the face rest shell 1006. A longitudinal sensor 1122 is positioned on one of the sides 1104. It will be appreciated that the longitudinal sensor 1122 may be positioned on either of the sides 1104 or both of the sides 1104. The longitudinal sensor 1122 is substantially aligned with the eye cutout 1116, in the illustrated embodiment. In some embodiments, the longitudinal sensor 1122 may be aligned with the nose cutout 1114 or the chin cutout 1112. The longitudinal sensor 1122 is configured to measure the longitudinal angle 1054 of the face rest shell 1006.

[0133] Referring now to FIG. 24, the lateral sensor 1120 is configured as a spirit level vial 1140 having fluid 1142 retained therein. A bubble 1144 is present in the fluid 1142 and configured to move through the fluid 1142 dependent on the lateral angle 1040 of the face rest shell 1006 and the lateral sensor 1120. A plurality of indicia 1146 are marked on the vial 1140 to indicate a measurement of the lateral angle 1040. For example, if the bubble 1144 is positioned between a pair of center indicia 1148, the lateral sensor 1120 indicates that the lateral angle 1040 is substantially zero. A degree of the roll of the face rest shell 1006 is indicated by an amount to which the bubble 1144 floats outside of the center indicia 1148. It will be appreciated, that additional indicia including angle measurements, e.g. 5 degrees, 10 degrees, etc., may be provided on the head end 1100 or the vial 1140 to provide a measurement of the lateral angle 1140.

[0134] Referring to FIG. 25, the longitudinal sensor 1122 is configured as a spirit level vial 1150 having fluid 1152 retained therein. A bubble 1154 is present in the fluid 1152 and configured to move through the fluid 1152 dependent on the longitudinal angle 1054 of the face rest shell 1006 and the longitudinal sensor 1122. A plurality of indicia 1156 are marked on the vial 1150 to indicate a measurement of the longitudinal angle 1054. For example, if the bubble 1154 is positioned between a pair of center indicia 1158, the longitudinal sensor 1122 indicates that the longitudinal angle 1054 is substantially zero. A degree of the pitch of the face rest shell 1006 is indicated by an amount to which the bubble 1154 floats outside of the center indicia 1158. It will be appreciated, that additional indicia including angle measurements, e.g. 5 degrees, 10 degrees, etc., may be provided on the head end 1100 or the vial 1150 to provide a measurement of the longitudinal angle 1054.

[0135] FIG. 26 illustrates another embodiment of the face rest shell 1006 having a lateral sensor 1200 positioned on the head end 1100 and aligned with the centerline 1106. The lateral sensor 1200 extends across the head end 1100 between the sides 1104. The lateral sensor 1200 is configured to measure the lateral angle 1040 of the face rest shell 1006. A longitudinal sensor 1202 is positioned on one of the sides 1104. It will be appreciated that the longitudinal sensor 1202 may be positioned on either of the sides 1104 or both of the sides 1104. The longitudinal sensor 1202 is substantially aligned with the eye cutout 1116, in the illustrated embodiment. In some embodiments, the longitudinal sensor 1202 may be aligned with the nose cutout 1114 or the chin cutout 1112. The longitudinal sensor 1202 is configured to measure the longitudinal angle 1054 of the face rest shell 1006.

[0136] Referring now to FIG. 27, the lateral sensor 1200 is configured as a spirit level vial 1210 having fluid 1212 retained therein. A bubble 1214 is present in the fluid 1212 and configured to move through the fluid 1212 dependent on the lateral angle 1040 of the face rest shell 1006 and the lateral sensor 1200. A plurality of indicia 1216 are marked on the vial 1210 to indicate a measurement of the lateral angle 1040. For example, if the bubble 1214 is positioned between a pair of center indicia 1218, the lateral sensor 1200 indicates that the lateral angle 1040 is substantially zero. A degree of the roll of the face rest shell 1006 is indicated by an amount to which the bubble 1214 floats outside of the center indicia 1218. It will be appreciated, that additional indicia including angle measurements, e.g. 5 degrees, 10 degrees, etc., may be provided on the head end 1100 or the vial 1210 to provide a measurement of the lateral angle 1140.

[0137] Referring to FIG. 28, the longitudinal sensor 1202 is configured as a liquid level 1230 that includes an artificial horizon inclinometer 1232. The longitudinal sensor 1202 includes a transparent case 1234 filled with a fluid 1236. A top surface 1238 of the fluid 1236 is configured to measure the longitudinal angle 1054. That is, the top surface 1238 of the fluid 1236 remains substantially horizontal while the transparent case 1234 pitches with the face rest shell 1006. When the face rest shell 1006 is pitched, the top surface 1238 of the fluid 1236 aligns with indicia 1240 on the transparent case 1234 or on the face rest shell 1006 around the transparent case 1234 to indicate the longitudinal angle 1054.

[0138] FIG. 29 illustrates another embodiment of the face rest shell 1006 having a lateral sensor 1300 positioned on the head end 1100 and aligned with the centerline 1106. The lateral sensor 1300 extends across the head end 1100 between the sides 1104. The lateral sensor 1300 is configured to measure the lateral angle 1040 of the face rest shell 1006. A longitudinal sensor 1302 is positioned on one of the sides 1104. It will be appreciated that the longitudinal sensor 1302 may be positioned on either of the sides 1104 or both of the sides 1104. The longitudinal sensor 1302 is substantially aligned with the eye cutout 1116, in the illustrated embodiment. In some embodiments, the longitudinal sensor 1302 may be aligned with the nose cutout 1114 or the chin cutout 1112. The longitudinal sensor 1302 is configured to measure the longitudinal angle 1054 of the face rest shell 1006.

[0139] Referring to FIG. 30, the lateral sensor 1300 is configured as a liquid level 1310 that includes an artificial horizon inclinometer 1312. The lateral sensor 1300 includes a transparent case 1314 filled with a fluid 1316. A top surface 1318 of the fluid 1316 is configured to measure the lateral angle 1040. That is, the top surface 1318 of the fluid 1316 remains substantially horizontal while the transparent case 1314 rolls with the face rest shell 1006. When the face rest shell 1006 is rolled, the top surface 1318 of the fluid 1316 aligns with indicia 1320 on the transparent case 1314 to indicate the lateral angle 1040. It will be appreciated that, since the transparent case 1314 is spherical and three-dimensional, the lateral sensor 1300 may also double as a longitudinal sensor. Specifically, the top surface 1318 of the fluid 1316 also remains substantially horizontal while the transparent case 1314 pitches with the face rest shell 1006. When the face rest shell 1006 is pitched, the top surface 1318 of the fluid 1316 aligns with indicia on the transparent case 1314 to indicate the longitudinal angle 1054.

[0140] Referring now to FIG. 31, the longitudinal sensor 1302 is configured as a liquid level 1350 that includes an artificial horizon inclinometer 1352. The longitudinal sensor 1302 includes a transparent case 1354 filled with a fluid 1356. A top surface 1358 of the fluid 1356 is configured to measure the longitudinal angle 1054. That is, the top surface 1358 of the fluid 1356 remains substantially horizontal while the transparent case 1354 pitches with the face rest shell 1006. When the face rest shell 1006 is pitched, the top surface 1358 of the fluid 1356 aligns with indicia 1360 on the transparent case 1354 or on the face rest shell 1006 around the transparent case 1354 to indicate the longitudinal angle 1054.

[0141] It will be appreciated that the face rest shell 1006 may use any combination of the lateral sensors 1120, 1200, 1300 and longitudinal sensors 1122, 1202, 1302. The lateral sensors 1120, 1200, 1300 and longitudinal sensors 1122, 1202, 1302 described above provide a caregiver a visible and intuitive tilt indicators system on the face rest shell 1006 to easily set a correct position of the face rest shell 1006 according the patient morphology. The lateral sensors 1120, 1200, 1300 and longitudinal sensors 1122, 1202, 1302 facilitate visual management of the tilt angles of the face rest shell 1006 to allow the adjustment of the face rest shell 1006 to prevent and reduce skin injury risks and interface pressure on the patient's face. Efficiency is provided to the caregiver by pre-setting the face rest shell 1006 and allowing ease of use of the face rest shell 1006 during the prone procedure. The lateral sensors 1120, 1200, 1300 and longitudinal sensors 1122, 1202, 1302 provide the caregiver an indication of the tilt angle of the face rest shell 1006 relative to both the longitudinal axis 1052 and the lateral axis 1030. In some embodiments, the face rest shell 1006 may be adjusted before installation of the face rest shell 1006 on the head rest accessory 1002.

[0142] Before fixing the face rest shell 1006 on the patient support apparatus 1000, the caregiver can pre-set the lateral angle 1040 and longitudinal angle 1054 of the face rest shell 1006 to avoid adjusting the lateral angle 1040 and longitudinal angle 1054 with the patient's head 1024 in the face rest shell 1006. This pre-setting protocol facilitates saving time and minimizes risks during the patient prone positioning process. Depending on patient morphology and caregiver observation, the caregiver can decide to adjust the lateral angle 1040 and longitudinal angle 1054 of the face rest shell to provide the best ergonomic position for the patient 1022.

[0143] Referring now to FIG. 32, a face rest shell 1400 includes an outer perimeter 1402 defined by an outer edge 1404. The outer edge 1404 includes a top outer edge 1406 and a pair of planar side outer edges 1408. In the illustrative embodiment, the top outer edge 1406 is partially circular. The top outer edge 1406 is coupled to each of the side outer edges 1408 by a respective curved outer edge 1410. The side outer edges 1408 extend between the top outer edge 1406 and a bottom outer edge 1420. The bottom outer edge 1420 includes a pair of planar bottom outer edges 1422. Each of the pair of planar bottom edges 1422 is coupled to a respective side outer edge 1408 by an angled outer edge 1424. The planar bottom outer edges 1422 extend substantially perpendicular to the pair of side outer edges 1408.

[0144] An opening 1430 is formed in the bottom outer edge 1420. That is, the opening 1430 is formed between the pair of planar bottom outer edges 1422. A cutout 1432 extends from the opening 1430 toward the top outer edge 1406. The cutout 1432 is generally T-shaped and defined by an inner edge 1434. The cutout 1432 includes a mouth cutout 1436 that extends from the opening 1430. An eye cutout 1438 extends from the mouth cutout 1436 toward the top outer edge 1406. A downwardly facing convex surface 1440 extends between the outer edge 1404 and the inner edge 1434.

[0145] A top wall 1490 extends from the top outer edge 1406. In the illustrative embodiment, the top wall 1490 extends upwardly from the downwardly facing convex surface 1440. A pair of side walls 1492 extends from the each of the planar side outer edges 1408. In the illustrative embodiment, each of the pair of side walls 1492 extends upwardly from the downwardly facing convex surface 1440.

[0146] Referring to FIG. 33, the face rest shell 1400 includes an upwardly facing concave surface 1450 extending between the outer edge 1404 and the inner edge 1434. The mouth cutout 1436 includes a pair of side mouth inner edges 1452 extending from the opening 1430 to a cheek rest 1454 that flares inward. The pair of side mouth inner edges 1452 each include a pair of planar side mouth inner edges 1464. A cheek rest opening 1456 is defined between an inwardly most point 1458 of each of the cheek rests 1454. In the illustrated embodiment, the cheek rest opening 1456 has a width 1460 that is less than a width 1462 of the opening 1430.

[0147] The eye cutout 1438 extends from the mouth cutout 1436. The eye cutout 1438 extends from the cheek rest opening 1456. The eye cutout 1438 includes a pair of curved inner edges 1470 that extend from the cheek rest opening 1456 to a planar top inner edge 1472. The pair of curved inner edges 1470 are substantially circular. Each cheek rest 1454 is defined between the mouth cutout 1436 and the eye cutout 1438 so that each cheek rest 1454 is defined at least partially by a respective side mouth inner edge 1452 of the mouth cutout 1436 and at least partially by a respective curved inner edge 1470 of the eye cutout 1438. The eye cutout 1438 has a width 1498 that is greater than the widths 1460 and 1462.

[0148] A relief surface 1480 is formed in the upwardly facing concave surface 1450. The relief surface 1480 extends along the cheek rest 1454 and around the eye cutout 1438. The relief surface 1480 is configured to reduce pressure on the patient's cheeks and around the patient's eyes when the patient is positioned in a prone position on the face rest shell 600. The relief surface 1480 is configured to distribute interface pressure from protruding facial features of the patient.

[0149] The top wall 1490 extends upwardly from the upwardly facing concave surface 1450. Each of the pair of side walls 1492 extends upwardly from the upwardly facing concave surface 1450. The top wall 1490 and the side walls 1492 collectively retain the face cushion 1420 on the upwardly facing concave surface 1450.

[0150] Referring now to FIG. 34, a face cushion 1500 includes an outer perimeter 1502. The outer perimeter 1502 includes a top outer edge 1504 that is substantially circular. A pair of side outer edges 1506 extend from the top outer edge 1504 to a pair of angled bottom outer edges 1508. That is, the angled bottom outer edges 1508 extend non-orthogonal to the side outer edges 1506. In some embodiments, the bottom outer edges 1508 are not angled and extend substantially perpendicular to the side outer edges 1506. An angled outer edge 1510 extends between each bottom outer edge 1508 and the respective side outer edge 1506.

[0151] The face cushion 1500 includes a top end 1530, adjacent the top outer edge 1504, and a bottom end 1532, adjacent the bottom outer edge 1508. The top end 1530 is configured to receive the patient's forehead and the bottom end 1532 is configured to receive the patient's jaw. An opening 1534 is formed in the bottom end 1532 and extends inward from the bottom outer edge 1508 toward the top outer edge 1504. A pair of chin sections 1540 are configured to receive the patient's chin. A pair of cheek bone relief sections 1542 are shaped to support the patient's cheek bones.

[0152] The chin sections 1540 are defined by a pair of substantially circular inner edges 1560 extending from the opening 1534. An opening 1580 between the chin sections 1540 has a width 1582. A mouth cutout 1562 extends from the opening 1580 and is defined by a pair of planar mouth side inner edges 1564 extending from the inner edges 1560. The mouth side inner edges 1564 flare inward from the inner edges 1560. A nose cutout 1566 is defined between an inwardly most point 1568 of each of the cheek bone relief sections 1542. In the illustrated embodiment, the nose cutout 1566 has a width 1570 that is substantially equal to the width 1582 of the opening 1580.

[0153] An eye cutout 1584 extends from the mouth cutout 1562. The eye cutout 1584 extends from the nose cutout 1566. The eye cutout 1584 includes a pair of planar bottom edges 1586 that extend from the nose cutout 1566. A pair of curved inner edges 1590 extend from the pair of planar bottom edges 1586 to a curved top inner edge 1572. The pair of curved inner edge 1590 are substantially circular. The cheek bone relief sections 1542 are defined between the mouth cutout 1562 and the eye cutout 1584 so the cheek bone relief sections 1542 are defined at least partially the mouth cutout 1562 and at least partially by the eye cutout 1584. The eye cutout 1584 has a width 1596 that is greater than the widths 1582 and 1570.

[0154] Any theory, mechanism of operation, proof, or finding stated herein is meant to further enhance understanding of principles of the present disclosure and is not intended to make the present disclosure in any way dependent upon such theory, mechanism of operation, illustrative embodiment, proof, or finding. It should be understood that while the use of the word preferable, preferably or preferred in the description above indicates that the feature so described can be more desirable, it nonetheless cannot be necessary and embodiments lacking the same can be contemplated as within the scope of the disclosure, that scope being defined by the claims that follow.

[0155] In reading the claims it is intended that when words such as “a,” “an,” “at least one,” “at least a portion” are used there is no intention to limit the claim to only one item unless specifically stated to the contrary in the claim. When the language “at least a portion” and/or “a portion” is used, the item can include a portion and/or the entire item unless specifically stated to the contrary.

[0156] It should be understood that only selected embodiments have been shown and described and that all possible alternatives, modifications, aspects, combinations, principles, variations, and equivalents that come within the spirit of the disclosure as defined herein or by any of the following claims are desired to be protected. While embodiments of the disclosure have been illustrated and described in detail in the drawings and foregoing description, the same are to be considered as illustrative and not intended to be exhaustive or to limit the disclosure to the precise forms disclosed. Additional alternatives, modifications and variations can be apparent to those skilled in the art. Also, while multiple inventive aspects and principles have been presented, they need not be utilized in combination, and many combinations of aspects and principles are possible in light of the various embodiments provided above.