PROSTHESIS LINER
A prosthesis liner provided for fitting over a stump of a limb. The prosthesis liner includes a main body having an inner face directed towards the skin of the stump, and an outer face directed away from the stump. The prosthesis liner also includes a proximal access opening and a side wall, which extends from the access opening as far as a closed distal end portion of the liner. At least one sealing lip is arranged on the outer face of the main body and protrudes radially outwards from the main body.
1 . A prosthesis liner configured to fit over a stump of a limb, the liner comprising:
a main body comprising:
an inner face directed towards a skin surface of the stump;
an outer face directed away from the stump;
a proximal access opening;
a closed distal end portion;
a side wall extending from the access opening to the closed distal end portion;
at least one sealing lip arranged on an outer face of the main body and protruding radially outwards from the main body, the at least one sealing lip comprising:
a first portion connected to the main body and extending in a direction away from the main body and toward the access opening;
a proximal portion extending proximally from the first portion in a direction toward the main body.
2 . The prosthesis liner according to claim 1 , wherein the side wall has a closed cross section.
3 . The prosthesis liner according to claim 1 , wherein the first portion of the at least one sealing lip is straight or curved.
4 . The prosthesis liner according to claim 1 , wherein the first portion and the proximal portion are integrally formed as a single piece.
5 . The prosthesis liner according to claim 1 , wherein the proximal portion bears on the outer face of the main body and is disconnected from the outer face.
6 . The prosthesis liner according to claim 1 , wherein the at least one sealing lip is cast onto the main body as a single-piece structure.
7 . The prosthesis liner according to claim 1 , wherein the at least one sealing lip comprises the same material as the main body.
8 . The prosthesis liner according to claim 1 , wherein the at least one sealing lip comprises a material different than that of the main body.
9 . The prosthesis liner according to claim 1 , wherein the first portion is partially embedded in the main body.
10 . The prosthesis liner according to claim 1 , wherein the at least one sealing lip around an entire circumference of the main body.
11 . The prosthesis liner according to claim 1 , wherein the at least one sealing lip is designed as a separate component and is secured or cast onto the main body.
12 . The prosthesis liner according to claim 1 , wherein the at least one sealing lip is arranged proximally with respect to a distal third of the main body.
13 . The prosthesis liner according to claim 1 , wherein the outer face is free of textile or is provided with a friction-reducing coating.
14 . The prosthesis liner according to claim 1 , further comprising a roughened surface structure positioned on the outer face at a location distal of the at least one sealing lip, the roughened surface structure promoting vacuum distribution.
15 . The prosthesis liner according to claim 1 , further comprising strips of a material different than the material of the main body arranged on at least one of the inner face and the outer face.
16 . The prosthesis liner according to claim 1 , further comprising at least one matrix embedded in the main body, the at least one matrix having isotropic elasticities.
17 . The prosthesis liner according to claim 16 , wherein a plurality of matrices with different elasticities are embedded in the main body.
18 . The prosthesis liner according to claim 16 , wherein the at least one matrix includes at least a first inelastic matrix embedded in the main body and circumferentially spaced apart from an elastic second matrix.
19 . The prosthesis liner according to claim 16 , wherein the at least one matrix is arranged medially and laterally in an area of a compromise pivot point of a joint.
20 . The prosthesis liner according to claim 1 , further comprising a piston pump or a pump piston arranged on the main body, or a receiving seat for a pump arrangement arranged in the main body.
21 . The prosthesis liner according to claim 20 , wherein the receiving seat is arranged at the distal end portion of the main body.
22 . The prosthesis liner according to claim 1 , wherein at least one of the main body and the at least one sealing lip comprises silicone or a polymer.
23 . The prosthesis liner according to claim 1 , wherein the main body comprises an air-permeable material and is sealed off distally with respect to the at least one sealing lip.
24 . A prosthesis liner configured to fit over a stump of a limb, the liner comprising:
a main body comprising:
an inner face directed towards a skin surface of the stump;
an outer face directed away from the stump;
a proximal access opening;
a closed distal end portion;
a side wall extending from the access opening to the closed distal end portion;
at least one sealing lip arranged on an outer face of the main body and protruding radially outwards from the main body, the at least one sealing lip comprising a first portion that extends away from the main body, and a second portion that extends toward the main body, the second portion being movable relative to the main body.