# US 5,707,347 A · Impact-dispersing knee brace

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- Number: US 5,707,347 A
- Document ID: US5707347A
- Status: Granted
- Kind: A
- Application number: 08/645,730
- Filed: 1996-05-14
- Granted: 1998-01-13
- Earliest claimed: 1996-05-14
- Inventors: Dickie Ray Bixler
- Web page: https://patentgrep.com/patent/US5707347A

## CPC

- A61F 5/0125: {the device articulating around a single pivot-point}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

An impact-dispersing knee brace consisting of an inner frame or skeleton and an outer protective shell. Both are affixed to side supports with the supports being hinged to provide flexibility to the knee. The double wall construction helps disperse impact forces, especially side impact forces, throughout the device. The outer shell also protects the knee-cap and back of the knee when the knee is extended and prevents the leg from hyperextending. A spring-biased hinge mechanism allows for slight movement and give in the device.

## Claims

### Claim 1

An impact-dispersing knee brace, comprising:
(a) an upper cuff for placement around the lower thigh and a lower cuff for placement around the lower leg, said upper and lower cuffs each comprising an arcuate anterior segment hinged to a similarly arcuate posterior segment, said anterior and posterior segments each having an arcuate inner frame element affixed to and extending between an inner portion of two complementary side frame members and an arcuate outer shell affixed to and extending between an outer portion of said side frame members; and
(b) a hinge for connecting said upper cuff and said lower cuff.

### Claim 2 (depends on 1)

The impact-dispersing knee brace according to claim 1, wherein said inner frame elements and said outer shells are made of a resilient plastic.

### Claim 3 (depends on 1)

The impact-dispersing knee brace according to claim 1, further comprising an adjustable hinge for hinging said anterior segments and said posterior segments such that the degree of separation between said anterior segments and said posterior segments may be altered.

### Claim 4 (depends on 1)

The impact-dispersing knee brace according to claim 1, further comprising a hook and loop fastener for fastening the unhinged side of said anterior segments to the unhinged side of said posterior segments.

### Claim 5 (depends on 1)

The impact-dispersing knee brace according to claim 1, wherein said hinge for connecting said upper cuff and said lower cuff comprises two pair of jointed side support arms, one pair of said arms being located on the lateral side of said brace and the other pair of said arms being located on the medial side of said brace, one of said arms of each said pair being spring-biased and coaxially engaged within said side frame member of said upper cuff posterior segment and the other said arms of each said pair being spring-biased and coaxially engaged within said side frame member of said lower cuff posterior segment.

### Claim 6 (depends on 1)

The impact-dispersing knee brace according to claim 1, wherein said anterior outer shell of said upper cuff has a downwardly extending lip and said anterior outer shell of said lower cuff has an upwardly extending lip such that when the leg is extended said lips meet, thus preventing hyperextension of the leg.

### Claim 7 (depends on 1)

The impact-dispersing knee brace according to claim 1, wherein said posterior outer shell of said upper cuff has a cut-away lower region and said posterior outer shell of said lower cuff has a cut-away upper region such that said outer posterior shells will not contact despite full flexion of the leg.