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Liner for prosthesis

A padding, prosthetic technology, used in prosthesis, medical science, one-component polypropylene rayon, etc.

Active Publication Date: 2019-11-15
OTTOBOCK SE & CO KGAA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantageously, however, three-dimensional auxetic materials also stretch when a force acts in the other direction, such as during the propulsion phase of the gait cycle.

Method used

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  • Liner for prosthesis
  • Liner for prosthesis
  • Liner for prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] figure 1 A two-dimensional auxetic material 2 is shown. The two-dimensional auxetic material in the relaxed, unloaded state is shown in the upper region. It has a particular shape comprising different meshes or cells 4 . The individual borders of the cells 4 can be produced here from conventional plastic, which can be printed, for example, by means of a 3D printer. Due to the particular geometry of the different cells 4 , the auxetic material 2 has a negative Poisson's ratio. this is in figure 1 shown in the lower region of . A tensile force is applied along the first arrow 6 , which is transmitted to the expandable cell 10 via the cell wall 8 shown vertically. such as with figure 1 A comparison of the upper region of the clearly shows that the corresponding side wall is pulled apart, whereby the side wall is in the transverse direction (in figure 1 Middle (ie from left to right) also increases in length. As a result, the auxetic material 2 not only enlarges and...

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PUM

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Abstract

The invention relates to a liner (14) for a prosthesis, said liner being made of a liner material (16) and comprising a proximal opening (18) for accommodating an amputation stump (24), a distal end (20), a longitudinal direction that extends from the proximal opening to the distal end, and an auxetic material.

Description

technical field [0001] The invention relates to a liner for a prosthesis, wherein the liner is manufactured from a liner material and has a proximal opening for receiving an amputation stump, a distal end and a longitudinal direction extending from the proximal opening to the distal end, and the liner has an auxetic material. Background technique [0002] Liners of this type are known from the prior art for a long time and are pulled over the amputation stump before they are introduced into the prosthesis cartridge. Here, the pads can fulfill different tasks. [0003] It is known to hold the prosthesis cartridge on the amputation stump by evacuating the volume between the prosthesis cartridge and the liner drawn over the amputation stump. In this case, the prosthesis remains on the amputation stump solely due to the low pressure prevailing in this volume. Naturally, it is necessary for this volume to be hermetically sealed, for which purpose, in particular, the edge of th...

Claims

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Application Information

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IPC IPC(8): A61F2/78A61F2/80D01F6/06
CPCA61F2/7812A61F2/80A61F2002/7818A61F2002/7875A61F2002/7881A61F2/5044A61F2002/5026A61F2002/5055
Inventor L·B·芬克
Owner OTTOBOCK SE & CO KGAA
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