Artificial limb with three-part cosmetic covering

• US 3,953,900 A
• Filed: 02/25/1975
• Issued: 05/04/1976
• Est. Priority Date: 02/26/1974
• Status: Expired due to Term

• Current Assignee: CHAS A Blatchford & Sons Limited
• Original Assignee: CHAS A Blatchford & Sons Limited
• Inventors: Thompson, Herbert
• Primary Examiner(s): Frinks, Ronald L.
• Application Number:
  US05/553,009
• Time in Patent Office: 434 Days
• Field of Search: 3/2, 3/12-12.8, 3/22-29, 3/21
• US Class Current: 623/39
• CPC Class Codes: A61F 2/582 Elbow joints
• CPC Class Codes: A61F 2/60 Artificial legs or feet or parts thereof
• CPC Class Codes: A61F 2/64 Knee joints
• CPC Class Codes: A61F 2002/5001 Cosmetic coverings
• CPC Class Codes: A61F 2002/5083 modular
• CPC Class Codes: A61F 2002/607 Lower legs
• CPC Class Codes: A61F 2002/608 Upper legs

Abstract

An artificial limb of the endoskeletal type has an outer cosmesis or covering in two or more parts, whereby a worn or damaged part can be removed and replaced without the expense of replacing the complete outer cosmesis.

Claims

1. An artificial leg of the endoskeletal type comprising:

- a shin portion;

a thigh portion;

knee joint structure connecting together the shin portion and the thigh portion;

a first tubular cosmetic covering on the shin portion;

a second tubular cosmetic covering on the thigh portion; and

an intermediate tubular cosmetic covering over the knee joint structure, the ends of the intermediate covering being in contact with the respective adjacent ends of the first and second coverings to avoid gaps between the coverings.

3. An artificial leg according to claim 1, wherein the coverings are of plastics material, that of the intermediate covering being different from that of the first and second coverings.

4. An artificial leg according to claim 3, wherein the intermediate covering is of a flexible polyurethane foam.

5. An artificial leg according to claim 1, wherein the ends of the intermediate covering interfit in plug and socket fashion with the respective adjacent ends of the first and second coverings.

6. An artificial leg according to claim 1, wherein the coverings are of plastics material and the surfaces of the said ends are formed on a plastics material that is harder than the plastics material of the remainder of the coverings.

7. An artificial leg according to claim 1, wherein the coverings are of plastics material and the surfaces of the said ends are formed on a plastics material that is rigid, the plastics material of the remainder of the coverings being non-rigid.

8. An artificial leg according to claim 1, wherein the first covering is of flexible polyethylene foam.

9. An artificial leg according to claim 1, wherein the second covering is of flexible polyethylene foam.

10. An artificial leg according to claim 1, wherein the respective said covering ends abut along planes which are inclined to the axis of the leg, such that the rear portion of the intermediate covering is longer than its front portion.

2. An artificial arm of the endoskeletal type comprising;

- a forearm portion;

an upper arm portion;

elbow joint structure connecting together the forearm portion and the upper arm portion;

a first tubular cosmetic covering on the forearm portion;

a second tubular cosmetic covering on the upper arm portion; and

an intermediate tubular cosmetic covering over the elbow joint structure, the ends of the intermediate covering being in contact with the respective adjacent ends of the first and second covering to avoid gaps between the coverings.

11. A method of making an artificial leg comprising the steps of providing connected shin, knee joint and thigh structues;

applying a first cosmetic covering of tubular plastics material to the shin structure;

applying an intermediate cosmetic covering of tubular plastics material over the knee joint structure;

applying a second cosmetic covering of tubular plastics material to the thigh structure; and

causing the three coverings to abut at their respective adjacent ends.