# US 2014/0150290 A1 · Walking device for improving patient with knee osteoarthritis

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- Number: US 2014/0150290 A1
- Document ID: US20140150290A1
- Status: Published application
- Kind: A1
- Application number: 13/689,773
- Filed: 2012-11-30
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Inventors: SAI-WEI YANG; KEH-TAO LIU
- Web page: https://patentgrep.com/patent/US20140150290A1

## CPC

- A43B 7/142: situated under the medial arch, i.e. under the navicular or cuneiform bones
- A43B 7/1445: situated under the midfoot, i.e. the second, third or fourth metatarsal
- A43B 7/147: {for sick or disabled persons, e.g. persons having osteoarthritis or diabetes}
- A43B 13/14: characterised by the constructive form
- A43B 13/40: with cushions
- A43B: CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR

## Abstract

A device for improving walks of a patient with knee osteoarthritis includes an insole, an inside-forefoot wedge cushion joining the insole at an inner side of a forefoot, wherein the inside-forefoot wedge cushion can support the inner side of the forefoot and thus reduce knee varus torques, an outside-hindfoot wedge cushion joining the insole at an outer side of a hindfoot, wherein the outside-hindfoot wedge cushion can support the outer side of the hindfoot and thus reduce knee varus torques, and a medial-foot-arch cushion joining the insole, wherein the medial-foot-arch cushion can have a foot to be turned out and increase walking stability and fluency. Thereby, a patient with knee osteoarthritis, when being walking, can have reduced knee varus torques. The purpose of improving walks of a patient with knee osteoarthritis can be achieved.

## Claims

### Claim 1

A device for improving walks of a patient with knee osteoarthritis, comprising:
an insole;
an inside-forefoot wedge cushion joining the insole at an inner side of a forefoot, wherein the inside-forefoot wedge cushion is configured to support the inner side of the forefoot and thus reduce knee varus torques;
an outside-hindfoot wedge cushion joining the insole at an outer side of a hindfoot, wherein the outside-hindfoot wedge cushion is configured to support the outer side of the hindfoot and thus reduce knee varus torques; and
a medial-foot-arch cushion joining the insole, wherein the medial-foot-arch cushion is configured to have a foot to be turned out and increase walking stability and fluency.

### Claim 2 (depends on 1)

The device of claim 1, wherein the insole is a hard form.

### Claim 3 (depends on 1)

The device of claim 1, wherein the inside-forefoot wedge cushion has an inclining angle ranging from 5 degrees to 10 degrees based on user's needs.

### Claim 4 (depends on 1)

The device of claim 1, wherein the outside-hindfoot wedge cushion has an inclining angle ranging from 5 degrees to 10 degrees based on user's needs.