Liner system and method for applying a liner system

Patent metadata

Field	Value
Publication number	US-12232986-B2
Application number	US-201816603942-A
Country	US
Kind code	B2
Filing date	Apr 25, 2018
Priority date	Apr 26, 2017
Publication date	Feb 25, 2025
Grant date	Feb 25, 2025

Abstract

A liner system for applying to a limb or a limb stump, with an inner liner comprising an inner side facing the limb or limb stump and an outer side facing away from the limb or limb stump, and an outer liner that comprises an inner side facing the inner liner and an outer side facing away from the inner liner. The outer liner is designed to be applied over the inner liner, with a sealing element which is designed to be separate from the inner liner and the outer liner, for arranging between the outer side of the inner liner and the inner side of the outer liner.

First claim

We claim:

1. A liner system for applying to a limb or a limb stump, the liner system comprising:
a socket comprising an inner wall;
an inner liner comprising an inner side facing the limb or limb stump and an outer side facing away from the limb or limb stump;
an outer liner that comprises an inner side facing the inner liner and an outer side facing the inner wall of the socket and facing away from the inner liner and that is applied over the inner liner;
a sealing element separate from the inner liner and the outer liner and comprising two free ends and at least one fixing element for attaching the free ends to one another, the sealing member being between the outer side of the inner liner and the inner side of the outer liner, wherein the sealing element is ring-shaped, wherein the sealing element is configured to be held in place on the outer side of the inner liner by an elastic holding force and is displaceable along a longitudinal direction of the inner liner before the outer liner is applied to the inner liner and the sealing element, and wherein the sealing element is configured to be held in place between the outer side of the inner liner and the inner side of the outer liner by pressure exerted on the sealing element and the inner liner by the outer liner.

2. The liner system according to claim 1 , wherein the fixing element is configured on or fixed to the sealing element.

3. The liner system according to claim 1 , wherein a cross-section of the sealing element is solid or has a closed or open hollow cross-section.

4. The liner system according to claim 3 , wherein the sealing element comprises a foam material or features or is filled with a foam material or a textile.

5. The liner system according to claim 1 , wherein a cross-section of the sealing element is round, triangular, quadrangular or polygonal, or with a flat contact surface.

6. The liner system according to claim 1 , wherein the sealing element is elastic or is made of an elastic material.

7. The liner system according to claim 1 , wherein the sealing element sticks to the outer side of the inner liner and/or to the inner side of the outer liner.

8. The liner system according to claim 1 , wherein at least one of the inner liner and the outer liner comprise a closed distal end region.

9. The liner system according to claim 1 , wherein the inner liner and the outer liner are attached to one another.

10. The liner system according to claim 9 , wherein the inner liner and the outer liner are connected to one another in their distal end regions in either a positive-locking or bonded manner, and form a connection zone.

11. The liner system according to claim 10 , wherein the connection zone does not extend beyond up to a first distal third of the outer liner in a proximal direction.

12. The liner system according to claim 1 , wherein at least one of the inner liner and the outer liner comprises a closed cross-section.

13. The liner system according to claim 1 , wherein the outer liner or the inner liner and the outer liner are elastic or made of an elastomer.

14. The liner system according to claim 1 , wherein the inner liner and the outer liner are made of the same material.

15. The liner system according to claim 1 , further comprising markers arranged on the inner liner to align the sealing element.

16. The liner system according to claim 1 , wherein the inner liner forms a smooth-walled inner surface along with the outer liner.

17. The liner system according to claim 1 , wherein the outer liner is designed such that it can be shortened.

18. A method for applying a liner system according to claim 1 , the method comprising the steps of:
Providing the liner system of claim 1 ,
applying the inner liner around the limb or the limb stump, followed by applying the sealing element on the outer side of the inner liner, followed by applying the outer liner on the outer side of the inner liner and covering of the sealing element with the outer liner.

19. The method according to claim 18 , wherein, upon or following the application of the inner liner, the outer liner is arranged at least partially over the outer side of the inner liner; a proximal end of the outer liner is subsequently pulled down in the distal direction before the application of the sealing element; and the pulled-down distal end of the outer liner is subsequently moved over the sealing element applied on the inner liner.

20. The method according to claim 18 , wherein the sealing element is applied on the outer side of the inner liner transversely or perpendicular to a longitudinal direction of the inner liner.

21. The method according to claim 18 , wherein the sealing element is fixed to the inner liner following or upon the application to the outer side of the inner liner.

22. A liner system for applying to a limb or a limb stump, the liner system comprising:
an inner liner comprising an inner side facing the limb or limb stump;
an outer side facing away from the limb or limb stump;
an outer liner that comprises an inner side facing the inner liner and an outer side facing away from the inner liner and that is applied over the inner liner;
a sealing element separate from the inner liner and the outer liner, the sealing element being between the outer side of the inner liner and the inner side of the outer liner, wherein the sealing element includes two free ends and at least one fixing element for attaching the free ends to one another, wherein the sealing element is configured to be held in place on the outer side of the inner liner by an elastic holding force and is displaceable along a longitudinal direction of the inner liner before the outer liner is applied to the inner liner and the sealing element, and wherein the sealing element is configured to be held in place between the outer side of the inner liner and the inner side of the outer liner by pressure exerted on the sealing element and the inner liner by the outer liner.

Assignees

• Ottobock Se & Co Kgaa

Inventors

• Mueller Christian
• Bielefeld Thilo-Mathias

Classifications

• A61F2002/802

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

• A61F2002/785

  Pads, e.g. relief pads · CPC title

• A61F2002/7837

  Sleeves for attaching or protecting, i.e. open ended hoses · CPC title

• A61F2/80

  Sockets, e.g. of suction type · CPC title

• A61F2/748

  Valve systems · CPC title