# US 9,517,381 B2 · Medical leg support arrangement adapted to increase the range of motion of a leg to aid in the healing and strengthening of damaged, injured and/or replaced bone, muscle and/or tissue of the leg

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- Number: US 9,517,381 B2
- Document ID: US9517381B2
- Status: Granted
- Kind: B2
- Application number: 14/439,018
- Filed: 2013-10-28
- Published: 2015-12-03
- Granted: 2016-12-13
- Earliest claimed: 2012-10-29
- Assignees: Maxm Skate Pty. Ltd.
- Applicants: Maxm Skate Pty Ltd
- Inventors: Matthew Liptack
- Web page: https://patentgrep.com/patent/US9517381B2

## CPC

- A63B 23/08: for ankle joints
- A63B 21/0004: {Exercising devices moving as a whole during exercise (bar bells or dumb bells A63B21/072; on wheels A63B22/20)}
- A63B 21/00185: {using resistance provided by the user, e.g. exercising one body part against a resistance provided by another body part (A63B21/068 takes precedence; isometric exercise A63B21/0023)}
- A63B 21/4015: {to the foot}
- A63B 21/4034: {for operation by feet}
- A63B 21/4049: {Rotational movement}
- A63B 22/16: Platforms for rocking motion about a horizontal axis {, e.g. axis through the middle of the platform}; Balancing drums; Balancing boards or the like {(exercising apparatus with cantilevered support elements pivoting about an axis A63B22/0056; other exercising apparatus for improving balance A63B26/003)}
- A63B 22/20: using rollers, wheels, castors or the like, {e.g. gliding means,} to be moved over the floor or other surface, {e.g. guide tracks,} during exercising
- A63B 23/0494: {primarily by articulating the knee joints (A63B23/0405, A63B23/0476 take precedence)}
- A63B 21/00061: {Replaceable resistance units of different strengths, e.g. for swapping}
- A63B 21/00181: {comprising additional means assisting the user to overcome part of the resisting force, i.e. assisted-active exercising}
- A63B 21/028: {made of material having high internal friction, e.g. rubber, steel wool, intended to be compressed (resistance provided by plastic deformable materials A63B21/00189)}
- A63B 21/0442: {Anchored at one end only, the other end being manipulated by the user}
- A63B 21/0552: {Elastic ropes or bands}
- A63B 21/4037: {Exercise mats for personal use, with or without hand-grips or foot-grips, e.g. for Yoga or supine floor exercises (mats for absorbing shocks A63B6/00)}
- A63B 23/03508: {For a single arm or leg, (A63B21/0726 takes precedence)}
- A63B 2022/0094: {for active rehabilitation, e.g. slow motion devices}
- A63B 2208/0233: in 90/90 position, like on a chair
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)

## Abstract

A medical leg support arrangement includes a main housing having a platform that a foot of a user would rest and be fastened there upon. Rotatable ground engaging strips are provided on opposing sides of the platform, wherein each rotatable ground engaging strip includes curved and/or arched up distal ends such that when in use weight bearing support of the arrangement is maintained upon initial contact and departure of the arrangement from the ground so as to allow continuous support to the leg of the user during back and forth circumferential motion instigated by the user when ground engaging the arrangement.

## Claims

### Claim 1

A medical leg support arrangement adapted to increase the circular range of motion of a leg of a user, when seated, to aid in the healing and strengthening of impaired musculoskeletal tissue of the leg of the user, said arrangement including:
a main housing having a flat platform with an upper surface such that a foot of the user is flatly restable upon said upper surface of said flat platform;
said main housing including a fastening means to retain and secure in place the flatly rested foot of the user upon the upper surface of said flat platform;
a pair of rails supporting a plurality of rotatable ground engaging rail wheels located on opposing sides of said flat platform, wherein each of said pair of rails includes a front curved distal end that curves up above the upper surface at a front end of the flat platform, and a rear curved distal end that curves up above the upper surface of a rear end of the flat platform, wherein one of said plurality of rotatable ground engaging rail wheels is positioned entirely above the upper surface at the front end of the flat platform and proximate to said front curved distal end, and one of said plurality of rotatable ground engaging rail wheels is positioned entirely above the upper surface at the rear end of the flat platform and proximate to said rear curved distal end such that, when in use, weight bearing support of the arrangement is maintained upon initial contact and departure of the arrangement from the ground so as to allow continuous support to the leg of the user during back and forth circumferential motion instigated by the user when ground engaging the arrangement.

### Claim 2 (depends on 1)

The medical leg support arrangement of claim 1 further including at least one ground engaging platform wheel mounted into an underside of said flat platform at each of the front and rear ends of said flat platform.

### Claim 3 (depends on 2)

The medical leg support arrangement of claim 2 further including a mat restricting the degree of rotatability of the plurality of rotatable ground engaging rail wheels when said plurality of rotatable ground engaging rail wheels are ground engaging upon said mat.

### Claim 4 (depends on 2)

The medical leg support arrangement of claim 2 further including a plurality of mats, each separately employable for restricting the degree of rotatability of the plurality of rotatable ground engaging rail wheels when said plurality of rotatable ground engaging rail wheels are ground engaging upon one of said plurality of mats, wherein each one of said plurality of mats has a varying degree of density and/or traction such that the greater degree of density or traction of the material of each one of said plurality of mats results in greater resistance placed upon the rotation of the plurality of rotatable ground engaging rail wheels.

### Claim 5 (depends on 1)

The medical leg support arrangement of claim 1 wherein the main housing includes means to attach to a resilient cord at either a front section or a back section of the main housing wherein said resilient cord, once attached, is adaptable to be anchored away from the arrangement such that the degree of resiliency of the cord will determine an amount of resistance placed upon the arrangement during back and forth circumferential motion of the arrangement instigated by the user when ground engaging.

### Claim 6 (depends on 5)

The medical leg support arrangement of claim 5 including a plurality of resilient cords wherein each of said plurality of resilient cords has a different degree of resiliency such that progressive healing and strengthening of a damaged portion of the leg can be completed during back and forth circumferential motion of the arrangement instigated by the user when ground engaging by firstly introducing to the user a resilient cord of higher resiliency so as to allow reduced resistance on the plurality of ground engaging rail wheels and wherein as the damaged portion of the leg begins to heal and/or requires further strengthening, one of said plurality of resilient cords with reduced resiliency can be progressively introduced to the user so as to provide greater resistance on the plurality of ground engaging rail wheels so as to place increased quantified force upon the leg during back and forth circumferential motion of the arrangement instigated by the user when ground engaging.

### Claim 7 (depends on 5)

The medical leg support arrangement of claim 5 wherein said resilient cord once fixed at a a first end thereof to said front section or back section of the main housing is anchorable at a second end thereof away from the medical leg support arrangement when the medical leg support arrangement is in use by the user and wherein a degree of resiliency of the resilient cord determines an amount of resistance placed upon the medical leg support arrangement when in use by the user.

### Claim 8 (depends on 1)

The medical leg support arrangement of claim 1 further including an adjustable fastening means so as to allow feet of different sizes to be retained and secured upon the upper surface of the flat platform of the main housing.

### Claim 9 (depends on 1)

The medical leg support arrangement of claim 1 wherein the plurality of ground engaging rail wheels are of a diameter such that the foot of the user flatly restable upon the flat platform of the main housing flatly rests upon the upper surface of the flat platform as close as possible to the ground.

### Claim 10 (depends on 1)

The medical leg support arrangement of claim 1 wherein the main housing includes means to attach an assist cord at either a front section or a back section of the main housing, and said assist cord, once fixed at a first end thereof to said front section or back section of the main housing, is graspable by the user at a second end thereof so that the user is able to assist in the range of motion of the leg during back and forth circumferential motion of the arrangement instigated by the user when ground engaging, by pulling at said assist cord.