Knee flexion and extension therapy device and method of use
10272291 ยท 2019-04-30
Inventors
Cpc classification
A63B21/4045
HUMAN NECESSITIES
A63B24/0087
HUMAN NECESSITIES
A63B21/4039
HUMAN NECESSITIES
A63B23/03525
HUMAN NECESSITIES
A63B2220/17
HUMAN NECESSITIES
A63B2022/0094
HUMAN NECESSITIES
A63B21/0023
HUMAN NECESSITIES
A63B2220/80
HUMAN NECESSITIES
A63B2225/50
HUMAN NECESSITIES
A63B21/015
HUMAN NECESSITIES
A63B2209/10
HUMAN NECESSITIES
A63B71/0622
HUMAN NECESSITIES
A63B21/00069
HUMAN NECESSITIES
International classification
A63B21/00
HUMAN NECESSITIES
A63B71/06
HUMAN NECESSITIES
A63B24/00
HUMAN NECESSITIES
A63B23/035
HUMAN NECESSITIES
A63B22/20
HUMAN NECESSITIES
A63B22/00
HUMAN NECESSITIES
A63B21/015
HUMAN NECESSITIES
A63B21/002
HUMAN NECESSITIES
Abstract
A portable exercise apparatus including an exercise board with moving and fixed indices marking progress made while exercising a knee which requires therapy consisting of controlled flexing and extending of the knee joint. A foot board or seated foot slide cooperatively engages and slides back and forth on the exercise board. An knee/ankle platform is removably attachable to the seated foot slide providing for active or passive knee extension stretching and a short-arc quad. A knee extension pad and target is included for use with the platform. Sensing means which may include a microprocessor control box or computer or smart device with a light and/or sound device for visual and/or auditory feedback are in communication with the exercise board provide a user with the results of flexing or extending the knee by a selected controlled amount.
Claims
1. A knee flexion and extension therapy device comprising: a generally rectangular slide board base having a front end and a rear end, said generally rectangular slide board having an upper flat surface with guide means comprising a rim extending around the periphery thereof defining a pair of marginal walls extending upwards from two longer sides of said generally rectangular slide board, said upward extending marginal walls having vertical sides, said outer vertical sides including a horizontal longitudinal slot, said generally rectangular slide board also including two movable target indices defining a flexion target and an extension target slidably engaging a respective one of said longitudinal slots, said upward extending marginal walls having fixed index marks; a foot board resting horizontally on said flat upper surface of said slide board is slidably received between said upward extending marginal walls; said slide board including longitudinal guide means for slidable cooperative engagement with the foot board for guiding selected from the group consisting of at least one ridge, at least one slot, at least one groove, a plurality of slots, and a plurality of grooves formed in said upper flat surface of said slide board; a movable pointer slidably received between said upward extending marginal walls of said generally rectangular slide board, slidably disposed in said the longitudinal guide means positioned between said foot board and a rear portion of said slide board; a knee/ankle support including a base, a vertical tower and a knee/ankle supporting pad affixed to a top of said tower, said base including means for slidable cooperative engagement with said longitudinal guide means; said vertical tower including a variable vertical extension between an underside of a user's knee and a supporting surface of said foot board, said vertical tower having a selected effective height of less than the height of said user's knee bent with the foot and hip of the user positioned horizontally with respect to said slide board for 50 to 80 degrees of knee extension and from 0 to 110 degrees or greater knee flexion during knee rehabilitation; and said foot board having a top surface capable of supporting a foot of a user and including means for receiving and cooperatively engaging said means for slidable cooperative engagement of said base of said knee/ankle support.
2. The knee flexion and extension therapy device defined in claim 1 wherein a first one of said two movable target indices contains a movable pointer sensor which is electrically connected to a control box, said control box including a light capable of being activated by said movable pointer sensor when said movable pointer comes in close proximity to said sensor.
3. The knee flexion and extension therapy device defined in claim 2 wherein said knee extension pad contains a pressure sensor which is electrically connected to said control box, said control box including a light capable of being activated by said pressure sensor when a user's knee presses against said knee extension pad.
4. The knee flexion and extension therapy device defined in claim 1 wherein a first one of said two movable target indices contains a movable pointer sensor which is electrically connected to a control box, said control box including an audible alarm capable of being activated by said movable pointer sensor when said movable pointer comes in close proximity to said sensor.
5. The knee flexion and extension therapy device defined in claim 4 wherein said knee extension pad contains a pressure sensor which is electrically connected to said control box, said control box including an audible alarm capable of being activated by said pressure sensor when a user's knee presses against said knee extension pad.
6. A knee flexion and extension therapy device comprising: a generally rectangular slide board having a front end and a rear end, said generally rectangular slide board having an upper flat surface with a pair of marginal walls extending upwards from two longer sides of said generally rectangular slide board, said upward extending marginal walls having outer vertical sides, said generally rectangular slide board including at least one longitudinal slot and movable target indices slidably engaging at least one of said at least one longitudinal slot, said upward extending marginal walls having indexing means at selected positions along said generally rectangular slide board; a generally rectangular foot board resting horizontally on said flat upper surface of said slide board is slidably received between said upward extending marginal walls; said slide board including longitudinal guide means for slidable cooperative engagement with the foot board for guiding selected from the group consisting of at least one ridge, at least one slot, at least one groove, a plurality of slots, and a plurality of grooves formed in said upper flat surface of said slide board; and said foot board having a top surface capable of supporting a foot of a user and including means of receiving and cooperatively engaging means for removably holding a knee/ankle support member.
7. The knee flexion and extension therapy device of claim 6, wherein said foot board including a top surface capable of supporting a foot of a user and including means for holding slots capable of receiving and cooperatively engaging at least one downward extending lug of said knee/ankle support.
8. The knee flexion and extension therapy device of claim 6, said knee/ankle support including a knee extension pad of a selected thickness.
9. The knee flexion and extension therapy device of claim 6, said knee/ankle support including a base, a vertical tower and a knee/ankle supporting pad affixed to a top of said tower, said base including downward extending lugs.
10. The knee flexion and extension therapy device of claim 6, including a movable pointer slidably captured between said upward extending marginal walls of said generally rectangular slide board, said movable pointer placed at a rear end of said foot board.
11. The knee flexion and extension therapy device of claim 6, including a movable pointer slidably cooperatively slidably engageable with said captured between said upward extending marginal walls of said generally rectangular slide board, said movable pointer placed at a rear end of said foot board.
12. The knee flexion and extension therapy device of claim 6 including a foot board and slide board friction enhancing means comprising threaded member extending from said foot board through said at least one longitudinal slot cooperatively engaging a tension knob for tightening said foot board against said slide board enhancing friction therebetween and creating adjustable slidable tension.
13. A knee flexion and extension therapy device comprising: a generally rectangular slide board having a front end and a rear end, said generally rectangular slide board having an upper flat surface with a pair of marginal walls extending upwards from two longer sides of said generally rectangular slide board, said upward extending marginal walls having outer vertical sides, said generally rectangular slide board including at least one longitudinal slot and movable target indices slidably engaging at least one of said at least one longitudinal slot, said upward extending marginal walls having indexing means at selected positions along said generally rectangular slide board; said slide board including longitudinal guide means for slidable cooperative engagement with said foot board for guiding selected from the group consisting of at least one ridge, at least one slot, at least one groove, a plurality of slots, and a plurality of grooves formed in said upper flat surface of said slide board; a generally rectangular foot board slidably captured between said upward extending marginal walls in sliding cooperative engagement with said longitudinal slot; and said foot board resting horizontally on said flat upper surface of said slide board having a top surface capable of supporting a foot of a user and including means of receiving and cooperatively engaging means for removably holding a knee/ankle support member.
14. The knee flexion and extension therapy device of claim 13, wherein said foot board including a top surface capable of supporting a foot of a user and including means for holding slots capable of receiving and cooperatively engaging at least one downward extending lug of said knee/ankle support.
15. The knee flexion and extension therapy device of claim 13, said knee/ankle support including a knee extension pad of a selected thickness.
16. The knee flexion and extension therapy device of claim 13, wherein each of said outer vertical sides include at least one horizontal longitudinal slot.
17. The knee flexion and extension therapy device of claim 13, said knee/ankle support including a base, a vertical tower and a knee/ankle supporting pad affixed to a top of said tower, said base including downward extending lugs.
18. The knee flexion and extension therapy device of claim 13, including a movable pointer slidably captured between said upward extending marginal walls of said generally rectangular slide board, said movable pointer placed at a rear end of said foot board.
19. The knee flexion and extension therapy device of claim 13, including a movable pointer slidably cooperatively slidably engageable with said captured between said upward extending marginal walls of said generally rectangular slide board, said movable pointer placed at a rear end of said foot board.
20. A knee flexion and extension therapy device comprising: a generally rectangular slide board having a front end and a rear end, said generally rectangular slide board having an upper flat surface with a pair of marginal walls extending upwards from two longer sides of said generally rectangular slide board, said upward extending marginal walls having outer vertical sides, at least one of said outer vertical sides including a horizontal longitudinal side slot, said generally rectangular slide board also including at least one movable target indices slidably engaging said at least one longitudinal side slot, said upward extending marginal walls having indicia means at selected points of said generally rectangular slide board for aligning said slide board with a user's chair; a generally rectangular foot board slidably captured between said upward extending marginal walls; a movable pointer slidably captured between said upward extending marginal walls of said generally rectangular slide board, said movable pointer placed rearward of said foot board; a knee/ankle support including a base removably supported and cooperatively engaging said generally rectangular slide board; and said foot board resting horizontally on said flat upper surface of said slide board having a top surface capable of supporting a foot of a user and including slots capable of receiving and cooperatively engaging means for holding said knee/ankle support.
21. The knee flexion and extension therapy device of claim 20, said knee/ankle support including a base, a vertical tower and a knee/ankle supporting pad affixed to a top of said tower, said base including downward extending lugs.
22. The knee flexion and extension therapy device of claim 20, wherein said knee extension pad includes at least one height extending pad.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) A better understanding of the present invention will be had upon reference to the following description in conjunction with the accompanying drawings in which like numerals refer to like parts throughout the views wherein:
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DESCRIPTION OF THE PREFERRED EMBODIMENTS
(23) In accordance with the present invention as shown in
(24) A generally rectangular slidable foot board 18, 118 is supported by and in slidable cooperative engagement with the surface 11 of the slide board 12. As shown in
(25) As shown in 19-21, means for enhancing friction between the slide board 18, 118 and slide board base 12 tension comprises a tension knob 31 has a shank having a threaded distal end (not shown) extending through a opening in the slide base 118 and through a receiving means such as a slot 16 in the slide base board 12 for cooperatively engaging slidable fastening means disposed on the bottom of the slide board base 12 comprising a slidable fastener such as wing nut, nut, tab or other holding means having threaded members in order to hold the slide base 118 to the slide board base 12. Rotation of the tension knob tightens the slide board 118 against the slide board base 12 creating friction therebetween and adjustable slidable tension. As best shown in
(26) The slide board 18 shown in
(27) A movable pointer 14 can be slidably disposed in the groove 16 positioned between the slidable foot board 18 and the rear end 8 of the slide board base. Movable target indices 22 and 20 are mounted in cooperative slidable engagement with the rim 6 or edge of the slide base board 12. Marker and slide board positioning indicia or alignment lines such as hash marks 9 are optionally formed or printed on the slide base board surface or attached to the rim 6 of the side edges 7 between the foot slide 18 and rear end 8 of the slidable board base 18.
(28) As best shown in
(29) The foot board 18 is captured within two parallel upward extending exterior walls 24 on each long side of the slide board 12 defining the lip or peripheral rim 3. It is contemplated that a slide board 18with downward extending lugs 30 can slide within a central elongated slot 16 in the upper surface of the slide board base 12. The movable pointer 14 is also loosely captured between the rim walls 24 of the slide board 12 and is smoothly moved toward the target indices 22 and 20 by contact with the square rear side of the foot board 18. As the user then moves the foot board 18 forward, the movable pointer 14 is left in the rearmost position to which the user was able to move. The movable pointer 14 may include one or more downward extending lugs which guidingly slides within the longitudinal slot 16.
(30) A movable target index 22 can be incorporated within the device to include sensing means such as an electronic sensor 27which senses when the movable pointer 14 comes in close proximity to the movable target index 22 by moving past a limit switch sensor, light sensor, magnetic sensor, voice activated sensor, or motion sensor. The sensor 27 in close proximity to target index 22 is electrically connected to a control box 23 by a cable 25 and causes an alarm means such as a light and/or buzzer to activate as the pointer 14 comes to close proximity with the sensor. It is contemplated that the intensity of the alarm increases as the distance between the sensor 27 and target index 22 decreases. As shown in
(31) Index marks 26 on either side of the slide board 12 are reference points which help the user to set the position of the exercise board 12 relative to the edge of a chair, for instance with the hash mark about six inches from the edge of the chair in which the user will be sitting, as shown in
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(33) As shown in
(34) As shown in
(35) As shown in
(36) When exercising the knee by extending the knee joint, a user places the underside of his knee on a knee extension pad or spacer 40, as shown in
(37) Examples of exercise instructions to be followed in therapy sessions using the knee exercise system 10. As set forth hereafter. The following examples describe preferred embodiments of the invention. Other embodiments within the scope of the claims herein will be apparent to one skilled in the art from consideration of the specification or practice of the invention as disclosed herein. It is intended that the specification, together with the examples, be considered exemplary only, with the scope and spirit of the invention being indicated by the claims which follow the examples. In the examples all percentages are given on a weight basis unless otherwise indicated.
Set-Up for Knee Flexion Exercises
Knee Flexion Range Of Motion Goal: 110 degrees (or as Set By Your Physician or Therapist)
(38) A firm chair is used with the back of the chair positioned against a wall or counter or other immovable object. Position the knee exercise device 10 on the floor with the black marker lines in line with the edge 60 of the chair 59 so that the main board extends out in front as shown in
(39) The user sits close to the edge of the chair and the foot of the injured leg is placed on top of the foot board with the flexion pointer bar next to the foot board.
(40) The knee exercise is equipped with two flexion targets (markers), one on each side of the main board. Coordinate the setting of the flexion targets with the physical therapist and determine the short term and long term goals. (An example would be setting the left flexion target for a two week goal and the right flexion target for a four week goal).
(41) The goal is to push the flexion pointer bar in line with or past the flexion target. As the flexion pointer bar is pushed further back, it is possible to quantify the progress in flexing the operated knee.
EXAMPLE 1
Seated Foot Slides for Knee Flexion Range of Motion (Active Knee Flexion)Flexion Goal 110-120 Degrees
(42) As illustrated in
(43) Bend the injured leg by sliding the sliding foot board as fr forward as possible. Assist the knee flexion by pushing with the lower back and using the unaffected leg. Hold the stretch for a selected number of seconds repeating the exercise. The user should continue to aim on pushing the flexion pointer bar even with or pass the flexion target set by the physical therapist.
(44) This exercise increases knee flexion and at the same time strengthens the hamstring muscle.
EXAMPLE 2
Seated Foot Slides for Assisted Knee Flexion Stretching
(45) While the patient is sitting in a chair with the affected foot resting on the slidable foot board, the unaffected leg is positioned in front of the affected leg and the unaffected leg pushes the affected leg backward toward the chair holding the position for 20 to 20 seconds.
EXAMPLE 3
Active Knee Extension Stretching with Ankle Platform (Knee Extension Range of Motion Goal: 0 Degree (or Set By Doctor))
(46) The sliding board base 12 is positioned on a bed or couch or other level elevated surface.
(47) The ankle platform or tower is placed under the heel of the rehabilitating leg. The quad muscle is tightened and simultaneously the knee is pushed downward. The leg is relaxed allowing gravity to stretch the knee toward extension. The exercise is performed stretching the rehabilitating leg for the recommended rehabilitation time for a selected number of minutes for a selected times a day.
(48) As illustrated in
EXAMPLE 4
Passive Knee Extension Stretching (Knee Extension Range of Motion Goal: 0 Degree (or Set By Doctor)
(49) With the patient in the lying position the ankle platform is attached to the sliding foot board and the patient positions ankle of the affected leg on to of the platform. The patient relaxes the leg and leaves it in position for 5 to 30 minutes depending upon the patient's tolerance. Gravity stretches the patient's knee toward extension. Additional weight can be added to the top of the knee for adding stretching force.
EXAMPLE 5
Active Knee Extension with Removable Knee/Ankle Platform
(50) Position the knee extension tower platform directly under the bend of the operated knee. The knee is pushed down against the platform which provides an extension target. Attempt to straighten the rehabilitated knee with repeated movements removing the top most layer as the rehabilitation progresses in order to further bend the knee and extend the leg. The layered platform extension blocks enable the user to quantify how much extension progress has been gained. The exercise is repeated for a selected number of repetitions for a selected number of days.
(51) For instance three layers of the knee extension target platform on the proximal end of the slide board. With the patient in the lying position, the knee is positioned with the bend directly above the knee extension target platform. The patient tightens the quadriceps (thigh muscles) and simultaneously extends the knee to push the bend of the knee toward the extension target and holds the position for 5 to 10 seconds repeating the motion for 10 to 20 cycles. When the patient easily touches the upper layer of the extension target, remove a layer and repeat the procedure.
(52) The sliding knee board device can also be equipped with a digital wireless goniometer whereby readings are wirelessly monitored through an application on a computerized smart device such as a smart phone, smart watch, smart pad, personal computer, tablet or the like. Smart devices include smart phones which include an advanced mobile operating system which combines features of a personal computer operating system with other features useful for mobile or handheld use. It typically combine the features of a cell phone with those of other popular mobile devices, such as personal digital assistant (PDA), media player and GPS navigation unit. Most smart phones can access the Internet, have a touchscreen user interface, can run third-party apps, music players and are camera phones. Most Smart phones produced from 2012 onwards also have high-speed mobile broadband 4G LTE internet, motion sensors, and mobile payment mechanisms. The term smart device includes smart phones and other computerized devices including display, transmitting, and receiving means such as a visual screen, keyboard, and audio and/or visual communication with the internet or other smart devices will be referred herein as a smart device. Sensors positioned at selected positions on the base 12 or sliding board 18 in wireless communication with a smart device provide a means for recording and measuring the rehabilitative progress of the user. The sensors may be used to count the number of repetitions or pressure, or distance or combination thereof and transmitted to a receiver in the smart device and/or the sensor may include a microprocessor unit or other stand alone digital device. The counter may also be in wireless electrical communication with a pedometer or counter in order to count repetitions. The braces or sliding boards will have attached or built in digital goniometer so patients are able to monitor their progress toward a specific motion. The benefit to the patient is the ability to visually monitor the actual range of motion of the affected joint(s).
(53) The foregoing detailed description is given primarily for clearness of understanding and no unnecessary limitations are to be understood therefrom, for modification will become obvious to those skilled in the art upon reading this disclosure and may be made without departing from the spirit of the invention and scope of the appended claims. Accordingly, this invention is not intended to be limited by the specific exemplification presented herein above. Rather, what is intended to be covered is within the spirit and scope of the appended claims.