Head plate provided for an operating table and adjustable with one hand

Abstract

Multi-part displaceable head plate (1) for an operating table (30), comprising: a coupling arrangement (2), a positioning segment (3) for positioning the head plate (1), a head support segment (4) for supporting the head of the patient, and an unlocking device (24) for unlocking two joint arrangements (5), (6). The positioning segment (3) and the head support segment (4) are each pivotably connected to the coupling arrangement (2) and to the positioning segment (3), via a first (5) and a second (6) joint arrangement respectively.

Claims

1. A displaceable head plate for an operating table, the head plate comprising: a coupling arrangement; a positioning segment for positioning the head plate, wherein the positioning segment is pivotably connected to the coupling arrangement via a first joint arrangement that is configured to be locked against pivoting; a head support segment for supporting the head of a patient, wherein the head support segment is pivotably connected to the positioning segment via a second joint arrangement that is configured to be locked against pivoting; and an unlocking device for unlocking both joint arrangements comprising: a) an actuating device for actuating the unlocking device by the user, and b) a first unlocking mechanism for unlocking the first joint arrangement, which mechanically couples the actuating device to the first joint arrangement, wherein the first unlocking mechanism comprises a displaceable coupling device, wherein the actuating device is arranged on the head support segment, wherein, starting from the head support segment, the coupling device runs from the actuating device as far as the second joint arrangement and, when unlocked, the coupling device adopts such a position that the head support segment can pivot relative to the positioning segment through a plurality of angular positions, and wherein the first unlocking mechanism comprises a release element which is adjustably mounted between the first and the second joint arrangements and is configured to be connected to the actuating device via the coupling device.

2. The head plate according to claim 1, wherein the coupling device is rotatable about a first pivot point which is remote from the actuating device, and wherein the position of the coupling device in the unlocked state is such that the first pivot point lies on a pivot axis of the second joint arrangement.

3. The head plate according to claim 1, wherein in the unlocked state the coupling device is aligned radially with respect to a pivot axis of the second joint arrangement.

4. The head plate according to claim 1, wherein the coupling device is pivotably articulated on the release element via a first pivot point.

5. The head plate according to claim 1, wherein the coupling device converts a rotational movement of the actuating device into a translational movement of the release element for unlocking the first joint arrangement.

6. The head plate according to claim 1, wherein the release element comprises a first end section assigned to the first joint arrangement and a second end section assigned to the second joint arrangement, wherein the first end section is designed as a latching element and the second end section is connected to the coupling device via a pivot joint.

7. The head plate according to claim 1, wherein the unlocking device comprises a blocking device for blocking the position of the actuating device in the locked state to preclude inadvertent actuation of the actuating device.

8. The head plate according to claim 7, wherein the blocking device is rotatably mounted in the actuating device and is designed such that it is configured to be switched between two discrete latching positions, namely a first latching position for blocking the actuating device and a second latching position for releasing the actuating device.

9. The head plate according to claim 7, wherein the blocking device cooperates with a blocking spring in order to selectively block or release the actuating device.

10. The head plate according to claim 7, wherein the blocking device comprises a switching rod arranged coaxially in a switching tube.

11. The head plate according to claim 1, wherein the actuating device comprises two actuating elements, which are each arranged on opposite sides of the head support segment, and a synchronization element, such that a movement of one actuating element is transferred to the other actuating element.

12. The head plate according to claim 11, wherein the synchronization element is a switching tube.

13. The head plate according to claim 1, wherein the coupling arrangement is configured for releaseably coupling the head plate to the operating table.

14. A displaceable head plate for an operating table, the head plate comprising: a coupling arrangement; a positioning segment for positioning the head plate, wherein the positioning segment is pivotably connected to the coupling arrangement via a first joint arrangement that is configured to be locked against pivoting; a head support segment for supporting the head of a patient, wherein the head support segment is pivotably connected to the positioning segment via a second joint arrangement that is configured to be locked against pivoting; and an unlocking device for unlocking both joint arrangements comprising: a) an actuating device for actuating the unlocking device by the user, and b) a first unlocking mechanism for unlocking the first joint arrangement, which mechanically couples the actuating device to the first joint arrangement, wherein the first unlocking mechanism comprises a displaceable coupling device, wherein the actuating device is arranged on the head support segment, wherein, starting from the head support segment, the coupling device runs from the actuating device as far as the second joint arrangement and, when unlocked, the coupling device adopts such a position that the head support segment can pivot relative to the positioning segment through a plurality of angular positions, and wherein the unlocking device has a second unlocking mechanism for unlocking the second joint arrangement to allow pivoting of the head support segment relative to the positioning segment, wherein the second unlocking mechanism has a plurality of complementary latching elements, of which one is formed on the positioning segment and the other is formed on the actuating device.

15. The head plate according to claim 14, that wherein in the second unlocking mechanism the locking element formed on the mounting segment comprises a tooth arch, wherein the tooth arch is arranged coaxially to an axis of rotation.

16. The head plate according to claim 14, wherein the coupling device is rotatable about a first pivot point which is remote from the actuating device, and wherein the position of the coupling device in the unlocked state is such that the first pivot point lies on a pivot axis of the second joint arrangement.

17. The head plate according to claim 14, wherein in the unlocked state the coupling device is aligned radially with respect to a pivot axis of the second joint arrangement.

18. A displaceable head plate for an operating table, the head plate comprising: a coupling arrangement; a positioning segment for positioning the head plate, wherein the positioning segment is pivotably connected to the coupling arrangement via a first joint arrangement that is configured to be locked against pivoting; a head support segment for supporting the head of a patient, wherein the head support segment is pivotably connected to the positioning segment via a second joint arrangement that is configured to be locked against pivoting; and an unlocking device for unlocking both joint arrangements comprising: a) an actuating device for actuating the unlocking device by the user, and b) a first unlocking mechanism for unlocking the first joint arrangement, which mechanically couples the actuating device to the first joint arrangement, wherein the first unlocking mechanism comprises a displaceable coupling device, wherein the actuating device is arranged on the head support segment, wherein, starting from the head support segment, the coupling device runs from the actuating device as far as the second joint arrangement and, when unlocked, the coupling device adopts such a position that the head support segment can pivot relative to the positioning segment through a plurality of angular positions, and wherein the unlocking device is configured to be used to unlock and re-lock both the first joint arrangement and the second joint arrangement one of simultaneously or sequentially.

19. The head plate according to claim 18, wherein the coupling device is rotatable about a first pivot point which is remote from the actuating device, and wherein the position of the coupling device in the unlocked state is such that the first pivot point lies on a pivot axis of the second joint arrangement.

20. The head plate according to claim 18, wherein in the unlocked state the coupling device is aligned radially with respect to a pivot axis of the second joint arrangement.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) An exemplary embodiment of the disclosure is explained in more detail below with reference to the figures. In the drawings:

(2) FIG. 1 shows a perspective view of a two-part head plate already known from the prior art;

(3) FIG. 2 shows a side view of a multi-part displaceable head plate in a horizontal starting position of the head support segment, which represents an exemplary embodiment of the disclosure;

(4) FIGS. 3-5 show side views of the head plate of FIG. 2 in different displacement positions of the head plate segment;

(5) FIG. 6 shows a perspective view of a detail of an unlocking device of the head plate of FIGS. 2-5 attached to an operating table, wherein the joint arrangements are in a locked state and the unlocking device is in a blocked state;

(6) FIG. 7 shows a perspective view of a detail of the unlocking device of FIG. 6, wherein the joint arrangements are in a locked state and the unlocking device is in an unblocked state;

(7) FIG. 8 shows a further perspective view of a detail of the unlocking device of FIGS. 6 and 7, wherein the joint arrangements are in an unlocked state and the unlocking device is in an unblocked state;

(8) FIG. 9 shows a perspective view of a blocking device with deactivated blocking of the actuating device; A part of the actuating element has been omitted for the sake of clarity.

(9) FIG. 10 shows a perspective view of the blocking device of FIG. 9 with activated blocking of the actuating device; A part of the actuating element has been omitted for the sake of clarity.

(10) FIG. 11 shows a perspective overall view of the top plate of FIGS. 2-10, wherein a head support element of the head support segment has been omitted for the sake of clarity;

(11) FIG. 12 shows a plan view of the symmetrical construction of the head plate of FIG. 11, wherein a head support element of the head support segment has been omitted for the sake of clarity;

(12) FIG. 13 a perspective view of the head plate from FIG. 11-12, the components of which are arranged mirror-symmetrically on the right and left sides, the switch rod of the blocking device being visible.

DETAILED DESCRIPTION

(13) In the following description, exemplary embodiments of the present disclosure are described with reference to the drawings. The drawings are not necessarily to scale, but are only intended to illustrate the respective features schematically.

(14) It should be noted that the features and components described below can each be combined with one another, regardless of whether they have been described in connection with a single embodiment. The combination of features in the respective embodiments merely serves to illustrate the basic structure and the mode of operation of the claimed device.

(15) FIG. 2 is a side view showing a multi-part head plate 1 according to the disclosure as an embodiment. The head plate 1 serves to support the head of a patient lying on an operating table 30 (see FIG. 6) during an operation.

(16) As shown in FIG. 2, the head plate 1 comprises a coupling arrangement 2 for coupling to the operating table and two head plate segments 3 and 4. In this case, a first head plate segment is designed as a positioning segment 3 for positioning the head plate 1 and a second head plate segment as a head support segment 4 for supporting the patient's head.

(17) Furthermore, the head plate 1 comprises two joint arrangements 5, 6, each with an axis of rotation A and B (see the two crosses in FIG. 2), which are spaced apart from one another. While the positioning segment 3 is pivotably connected to the coupling arrangement 2 via the first joint arrangement 5, the head support segment 4 can be pivoted relative to the positioning segment 3 about the axis of rotation B of the second joint arrangement 6.

(18) The head support segment 4 comprises an actuating device 23 described later in detail (see FIG. 6), an e.g. padded head support plate 10, two side slide rails 8 (only one is shown in FIGS. 2-5) and a front-positioned mounting rail 9 for attaching accessories, such as e.g. an operating device, a tube holder for breathing tubes or a drip stand.

(19) The coupling arrangement 2 has two pin joints 11 for fastening in each case, for example, to one end of a side rail of an operating table 30 (see FIGS. 6-10 and 13). In some embodiments, the pin joints 11 can each have a right-angled profile that has an “L shape” in cross section. For example, the coupling arrangement 2 can comprise two connecting sections 7, which are oriented perpendicularly to the patient support surface, and two pin joints 11 which are substantially horizontal.

(20) FIGS. 3-5 show further side views of the head plate 1 according to the disclosure in different angular positions of the head plate segments 3 and 4.

(21) The present head plate 1 enables, via a first degree of freedom of rotation of the positioning segment 3 about the axis of rotation A, a displacement of the positioning segment in the angular ranges α.sub.1 and α.sub.2 and, via a second degree of freedom of rotation of the head support segment 4 about the axis of rotation B, a displacement of the head support segment in the angular range β, which can be fixed in stages.

(22) The positioning segment 3 can be positioned from an undisplaced initial position of the head plate 1, the height and orientation of which in the coupled state correspond to the height and orientation of the patient support surface (FIG. 2), by the inclination angle α.sub.1 or lowered by the inclination angle α.sub.2 (FIGS. 3 and 4). In addition, the head plate 1 can be displaced by the angle of rotation β, in that the head support segment 4 is pivoted about the axis of rotation B of the second joint arrangement 6 relative to the positioning segment 3.

(23) These displacement possibilities for the top plate 1 have the advantage that a lateral positioning of the patient during an operation can be realized without problems. For this the patient's head—depending on the shoulder width—is stored a few centimeters above the body support surface on the positioned head support segment 4 in order to achieve optimal relief of the head and shoulder muscles, which corresponds to a stepped positioning of the head.

(24) FIGS. 6-8 show the internal structure of the operating table 30 mounted on the top plate 1 of FIGS. 2-5. It should be noted that the two head plate segments 3, 4, the joint arrangements 5, 6, and the actuating and blocking devices 18, 19, 22 are constructed in mirror symmetry with respect to a plane running longitudinally through the center of the head plate 1. For the sake of clarity, only components of a single top plate side are therefore shown in FIGS. 6-8.

(25) FIG. 6 shows an unlocking device 24 for unlocking the two joint arrangements 5, 6. This comprises an actuating device 23 which is attached to the head support segment 4 and which serves to actuate the unlocking device 24 by a user, a first unlocking mechanism 25 for unlocking the first joint arrangement 5 and a second unlocking mechanism 31 for unlocking the second joint arrangement 6.

(26) The actuating device 23 comprises, on each side of the head plate, an actuating element in the form of an actuating sleeve 19 and a switching plate 18 rigidly connected to it, as well as a synchronization element in the form of a switching tube 17, each switching plate 18 together with the actuating sleeve 19 being pivotably mounted about the longitudinal axis C of the switching tube 17. The switching tube 17 connects the actuating sleeve 19 on the left side of the head plate to an actuating sleeve 19 on the right side of the head plate (see FIGS. 11, 12).

(27) Each switching plate 18 is located on a side of the actuating sleeve 19 facing the patient's head and is designed such that it has latching elements (not shown) at one end which engage in a receiving element 16 located in the second joint arrangement 6 in the radial direction of this joint arrangement 6. This fixes the rotation of the head support segment 4 about the B axis (FIG. 6). For example, each receiving element 16 consists of a circular, toothed region 20, which is formed on an arm α.sub.1, α.sub.2 of the positioning segment 3.

(28) The latching elements of the switching plate 18 are designed such that they engage in a plane perpendicular to the axes of rotation B and C in the corresponding latching recesses in the toothed region 20 of the receiving element 16.

(29) Together, the two receiving elements 16 with the toothed region or tooth arch 20 and the latching elements of the two switching plates 18 form the second unlocking mechanism 31.

(30) The first unlocking mechanism 25 mechanically couples the actuating device 23 to the first joint arrangement 5. For this purpose, it has an elongated release element 13 and an adjustable coupling device 15 with the function of a coupling rod on both mirror-symmetrical sides of the head plate 1. Each release element 13 is movably mounted in a guide of the arm a.sub.1, a.sub.2 of the positioning segment 3 between the two joint arrangements 5, 6 and is connected via the coupling device 15 to a switching plate 18 of the actuating device 23. In some embodiments, the coupling device 15 is formed as a rigid member, such as a sheet or a rod.

(31) Starting from the head support segment 4, each coupling device 15 runs from the actuating device 23 to the second joint arrangement 6. In particular, each coupling device 15 is articulated pivotably at one end about a second pivot point Q on a switching plate 18 and is articulated pivotably at the other end about a first pivot point P on a release element 13.

(32) In the locked basic position of the head plate 1 shown in FIG. 6, the latching elements of the switching plates 18 are in engagement with the toothed regions 20 of the receiving elements 16 of the arms a.sub.1, a.sub.2, whereby the rotation of the head support segment 4 about the B axis is fixed. Furthermore, the adjustable coupling devices 15 are in a locked position. In the locked position, each coupling device 15 extends obliquely between a switching plate 18 and a release element 13. The first pivot point P is radially offset with respect to the axis of rotation B of the second joint arrangement 6. In particular, the first pivot point P is offset radially inward with respect to the axis of rotation B in the direction of the coupling arrangement 2.

(33) In the present embodiment, each release element 13 is designed as a fork-shaped tooth piece, which is in spring-assisted engagement (H) with a tooth arch 12 mounted in each case in the first joint arrangement 5. Furthermore, the tooth arches 12 are rigidly connected to the coupling arrangement 2. The first joint arrangement 5 is thus locked.

(34) Each release element 13 comprises a first end section 13.1 assigned to the first joint arrangement 5, a second end section 13.3 assigned to the second joint arrangement 6, and a main body 13.2 which extends between the two end sections 13.1, 13.3 and is angled, for example. The first end section 13.1 forms a toothed engagement head.

(35) In the unlocked state shown in FIG. 8, the coupling devices or also tension plates 15 are in an unlocked position. In this position, the first pivot point P lies on the pivot axis B of the second joint arrangement 6.

(36) Furthermore, the unlocking device 24 comprises a blocking device 22 for blocking the rotation of the actuating device 23 about the axis of rotation C. The blocking device 22 is rotatably mounted in the actuating sleeves 19 and is designed such that it can be switched between a lower and an upper discrete latching position. This prevents the joint arrangements 5, 6 from being unlocked unintentionally. The functioning of the blocking device 22 is shown in FIGS. 9 and 10 and is described below.

(37) In the lower latching position (FIGS. 6, 10), the blocking device 22 presses a blocking spring 26 on each side of the head plate 1 under a joint plate G, which is part of the head support segment 4. The blocking spring 26 is deformed in the elastic region, similar to a leaf spring. Since the blocking spring 26 is non-rotatably connected to a wall of the actuating sleeve 19, the pivoting of the actuating device 23 can be blocked.

(38) In the upper latching position (FIGS. 7-9), the blocking device 22 releases the blocking springs 26. In their relaxed position, the blocking springs 26 are no longer under the joint plates G. As a result, the actuating device 23 can be pivoted about the C axis.

(39) The blocking device 22 has first spring receptacles 22.1. The blocking springs 26 sit in the lower latching position in these receptacles, where they are clamped under the joint plate G. Furthermore, the blocking device 22 has second spring receptacles 22.2. The blocking springs 26 are located in these receptacles in the upper latching position, where they are relaxed. The spring receptacles 22.1 and 22.2 are designed, for example, as concave recesses. In particular, the release receptacle 22.2 is a larger recess than the block receptacle 22.1.

(40) To displace the head plate segments 3, 4, one of the rod-shaped slide rails 8 is gripped laterally with one hand. Thus, the user can unblock the blocking device 22 with one finger and the rotation of the actuating device 23 about the C axis is released (FIG. 7). Now the user grips the adjacent actuating sleeve 19 with the same hand and pivots it about the axis of rotation C relative to the positioning segment 3. The resulting rotational movement of the switching plate 18 actuates the second unlocking mechanism 31 and thus unlocks the second joint arrangement 6. At the same time, this rotary movement is converted by means of the coupling devices 15 into a translational longitudinal movement of the tooth pieces 13 in the positioning segment 3. This pulling movement is opposed to the spring force of the springs H and takes place orthogonally to the axes of rotation A, B. In this way, the first unlocking mechanism 25 is transferred from the fixed basic position shown in FIGS. 6, 7 to a release position illustrated in FIG. 8.

(41) The coupling devices 15 exposed to the tensile force shift from their locking positions into their unlocking positions, so that the connection point of the tooth pieces 13 to the coupling devices 15 (i.e. the first pivot point P) in the second joint arrangement 6 lies on the axis of rotation B, and thus the pivoting of the head support segment 4 relative to the positioning segment 3 is possible in any angular position of the first joint arrangement 5. Such a configuration of the present unlocking device 24 enables the two joint arrangements 5, 6 to be unlocked and locked synchronously.

(42) According to some embodiments, however, the unlocking device 24 can be designed such that it can be used to unlock and re-lock the joint arrangements 5, 6 sequentially. For example, the locking sequence of the two joint arrangements 5, 6 can be influenced by the shape of the adjustable coupling device 15. In an advantageous embodiment, the coupling device 15 can have an elongated hole at its second end facing the switching plate 18 (at the pivot point Q). At least one end of the elongated hole can form a stop for a connecting element of the switching plate 18 with the coupling device 15, the diameter of the connecting element corresponding to the width of the elongated hole.

(43) Furthermore, the chronological sequence of locking and unlocking of the joint arrangements 5, 6 can be controlled by means of different engagement paths of the form-fitting engagement elements of the two joint arrangements 5, 6. The engagement paths can be determined, for example, by the length of the latching elements of the respective unlocking mechanism 25, 31, wherein only completely pulling out the latching elements from the opposing latching recess 12, 20 leads to the unlocking of the respective joint arrangement 5 or 6.

(44) Furthermore, the unlocking device 24 can be constructed differently than shown in FIGS. 2-13. For example, the actuating device 23 together with the blocking device 22 can be positioned on the head support segment 4 such that, for the purpose of unlocking the two joint arrangements 5, 6, it is not pivoted, but rather is displaced either perpendicularly or parallel to the axes of rotation A and B.

(45) In some embodiments of the present head plate 1, a translational outward and inward movement of the second unlocking mechanism 31 parallel to the axes of rotation A and B can be combined with a translational outward and inward movement of the first unlocking mechanism 25 in a plane perpendicular to the axes of rotation A and B.

(46) In other embodiments, the translational engagement and disengagement movement of both unlocking mechanisms 25, 31 can take place, for example, parallel to the axes of rotation A and B.

(47) After the release of the two joint arrangements 5, 6, the user can adjust the head plate 1 at an angle with the actuating hand. As soon as he releases the actuating device 23, the mechanism of the two joint arrangements 5, 6 locks automatically. This takes place e.g. by the force of two return springs F (see FIG. 12).

(48) The locking of the arrangements 5, 6 can, for example, be spring-assisted (spring H). Alternatively, the joint arrangements 5, 6 can be actively locked by the user by the exertion of pressure. The user can then advantageously move the blocking device 22 into the lower latching position with his thumb.

(49) After this step, the displacement of the head plate segments 3, 4 is completed and the head plate 1 is securely locked in its new position.

(50) Such an unlocking mechanism ensures a particularly user-friendly handling of the head plate 1 and precludes inadvertent actuation of the unlocking device 24.

(51) FIGS. 11-13 show the mirror-symmetrical design of the head plate 1. The blocking device 22 comprises a switching rod 27 guided in the connecting tube 17 (FIG. 13). In some embodiments, the switching rod 27 can have a round or polygonal cross section and can thus be present, for example, as a tube or hexagon.

(52) The switching rod 27 connects the two sides of the blocking device 22 to one another. Thus, if the blocking device 22 is actuated on one side, the other side follows the movement of the actuated side because it is coupled in a rotationally rigid manner to the actuated side via the switching rod 27. The switching rod 27 is aligned coaxially with the axis of rotation C. In addition, the actuating sleeves 19 are rigidly connected to one another via the connecting tube 17 coaxial with the axis of rotation C, so that the user can operate the head plate 1 either on one side or on both sides for the purpose of unlocking.

(53) With the design of the head plate 1 according to the disclosure a joint block for each joint axis can be realized on both sides in order to provide a particularly rigid and angularly-displaceable head plate. In addition, the present disclosure provides an unlocking device 24 which can be controlled synchronously from both lateral ends of the head support segment 4, so that a safe and ergonomic adjustment of the headplate position is possible.

LIST OF REFERENCE SIGNS

(54) 1 Head plate 2′ First rotation joint 3′ Second rotation joint 4′ Operating table 5′ Toggle 6′ Standard rail 7′ Frame 8′ Carrier plate 9′ Claw 10′ Single block 1 Head plate 2 Coupling arrangement 3 Positioning segment 4 Head support segment 5 First joint arrangement 6 Second joint arrangement 7 Connecting section 8 Lateral slide rail 9 Front mounting rail 10 Padded head support plate 11 Pin joint 12 Tooth arch 13 Release element 13.1 First end section of the release element 13 13.2 Main body of the release element 13 13.3 Second end section of the release element 13 15 Coupling device 16 Receiving element 17 Switching tube 18 Switching plate 19 Actuating sleeve 20 Toothed region of the receiving element 16 22 Blocking device 22.1 First spring receptacle 22.2 Second spring receptacle 23 Actuating device 24 Unlocking device 25 First release mechanism 26 Blocking spring 27 Switching rod 30 Operating table 31 Second unlocking mechanism A, A′ Axes of rotation a1 First arm of the positioning segment 3 a2 Second arm of the positioning segment 3 α 1 Positive angular range of the positioning segment 3 α 2 Negative angular range of the positioning segment 3 B, B″ Axes of rotation β Angular range of the head support segment 4 C Longitudinal axis of the switching tube 17 F Return spring G Joint plate H Spring support P Pivot point on the release element 13 Q Pivot point on the switching plate 18