Prosthetic interface

Patent metadata

Field	Value
Publication number	US-12036137-B2
Application number	US-202217693869-A
Country	US
Kind code	B2
Filing date	Mar 14, 2022
Priority date	Jun 7, 2018
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

A prosthetic interface includes a body portion having an open proximal end and a closed distal end including a distal cup. The body portion includes a membrane component having a flexible configuration defining an internal flow space extending along a length of the membrane component between an inner side arranged to face a skin surface of a residual limb and an outer side arranged to face away from the skin surface. At least one material coating is selectively applied to the membrane component that interacts with at least one of the membrane component and the distal cup to define at least one breathable region along the inner side that allows fluid flow between the internal flow space and the residual limb, and at least one impermeable region along the outer side that allows for vacuum suspension between the prosthetic interface and a prosthetic socket.

First claim

The invention claimed is:

1. A prosthetic interface comprising:
a body portion including a proximal end having an open configuration, and a distal end having a closed configuration, the body portion formed by a membrane component having a flexible configuration defining an internal flow space extending along a length of the membrane component between an inner side arranged to face a skin surface of a residual limb and an outer side arranged to face away from the skin surface, the internal flow space arranged to transport fluid through the membrane component and relative to the skin surface; and
a distal cup formed of a polymeric material at the distal end of the body portion;
at least one material coating selectively applied to the membrane component such that the at least one material coating interacts with at least one of the membrane component and the distal cup to define a breathable region, and an impermeable region along the outer side that allows for vacuum suspension between the prosthetic interface and a prosthetic socket;
wherein the body portion includes an elastomeric wall portion and the membrane component is positioned radially inside of the wall portion along an inner side of the elastomeric wall portion.

2. The prosthetic interface of claim 1 , wherein the membrane component defines an inner side and an outer side, the at least one material coating extending along the outer side of the membrane component.

3. The prosthetic interface of claim 1 , wherein the at least one material coating is formed from an elastomeric material.

4. The prosthetic interface of claim 3 , wherein the at least one material coating prevents the elastomeric wall portion from impregnating the membrane component.

5. The prosthetic interface of claim 4 , wherein the internal flow space of the membrane component is maintained along an axial length thereof.

6. The prosthetic interface of claim 1 , wherein a textile cover extends along an outer side of the elastomeric wall portion.

7. The prosthetic interface of claim 6 , wherein at least one seal band protrudes from an outer side of the textile cover and bleeds through the textile cover to engage the elastomeric wall portion.

8. The prosthetic interface of claim 7 , wherein the at least one seal band is formed from a polymeric material.

9. The prosthetic interface of claim 1 , wherein the membrane component defines an inner side and an outer side;
wherein the at least one material coating includes a first material coating located on an outer side of the membrane component, and a second material coating located on an inner side of the membrane component.

10. The prosthetic interface of claim 9 , wherein the second material coating defines a plurality of voids permitting fluid to flow from the skin surface into the internal flow space of the membrane component.

11. The prosthetic interface of claim 10 , wherein the second material coating extends along an entirety of the inner side of the membrane component.

12. The prosthetic interface of claim 9 , wherein the first material coating forms an impermeable barrier to the outer side of the membrane component.

13. The prosthetic interface of claim 9 , wherein the first material coating extends from the proximal end of the body portion to a bleed-through line such that the membrane component distal at a predetermined point along the bleed-through line is exposed by the first material coating, said predetermined point demarcating the breathable region, and the impermeable region.

14. The prosthetic interface of claim 13 , wherein the elastomeric wall portion extends along an outer side of the first material coating, and penetrates the membrane component by extending through an exposed region of the first material coating in the impermeable region to fill the internal flow space.

15. The prosthetic interface of claim 1 , wherein within the impermeable region along the length of the body portion, a seal component is arranged to selectively frictionally fit and seal against at least one seal band integrated with the body portion.

16. The prosthetic interface of claim 15 , wherein the at least one seal band defines at least two seal bands, such that a thickness of the body portion is airtight between the inner side of the membrane component and the seal bands.

17. The prosthetic interface of claim 1 , wherein a length or area of the impermeable region along the longitudinal axis of the body portion is less than the breathable region.

18. A prosthetic interface comprising:
a body portion including a proximal end having an open configuration, and a distal end having a closed configuration, the body portion formed by a membrane component having a flexible configuration defining an internal flow space extending along a length of the membrane component between an inner side arranged to face a skin surface of a residual limb and an outer side arranged to face away from the skin surface, the internal flow space arranged to transport fluid through the membrane component and relative to the skin surface, the body portion including an elastomeric wall portion and the membrane component is positioned radially inside of the wall portion along an inner side of the elastomeric wall portion; and
a textile cover extends along an outer side of the elastomeric wall portion;
a distal cup formed of a polymeric material at the distal end of the body portion;
at least one material coating selectively applied to the membrane component such that the at least one material coating interacts with at least one of the membrane component and the distal cup to define a breathable region, and an impermeable region along the outer side that allows for vacuum suspension between the prosthetic interface and a prosthetic socket;
wherein the membrane component defines an inner side and an outer side, the at least one material coating extending along the outer side of the membrane component;
wherein the at least one material coating is formed from an elastomeric material.

19. A prosthetic interface comprising:
a body portion including a proximal end having an open configuration, and a distal end having a closed configuration, the body portion formed by a membrane component having a flexible configuration defining an internal flow space extending along a length of the membrane component between an inner side arranged to face a skin surface of a residual limb and an outer side arranged to face away from the skin surface, the internal flow space arranged to transport fluid through the membrane component and relative to the skin surface, the body portion including the elastomeric wall portion and the membrane component is positioned radially inside of the wall portion along the inner side of the elastomeric wall portion;
a distal cup formed of a polymeric material at the distal end of the body portion;
at least one material coating selectively applied to the membrane component such that the at least one material coating interacts with at least one of the membrane component and the distal cup to define a breathable region, and an impermeable region along the outer side that allows for vacuum suspension between the prosthetic interface and a prosthetic socket;
wherein the membrane component defines an inner side and an outer side, the at least one material coating including a first material coating located on an outer side of the membrane component, and a second material coating located on an inner side of the membrane component.

Assignees

• Ossur Iceland Ehf

Inventors

• Størup Martin Lund
• Cain Rowan
• Birgisdottir Linda Ros
• Hringsdottir Hogna
• Asgeirsson Sigurdur
• Stefansson Stefan Orn
• Orrason Andri

Classifications

• A61F2002/5056

  Laminates, i.e. layered products · CPC title

• A61F2002/7875

  with releasable ratchets or pegs · CPC title

• A61F2002/802

  Suction sockets, i.e. utilizing differential air pressure to retain the prosthesis on the stump · CPC title

• A61F2002/7818

  Stockings or socks for the limb stump · CPC title

• A61F2002/807

  having a vacuum reservoir chamber · CPC title