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Prosthetic Knee

A knee joint and joint technology, applied in the field of prosthetic knee joints, can solve the problems of geometric atresia of the joint system, complex structure of the prosthetic knee joint, etc., and achieve the effect of no maintenance and low noise.

Active Publication Date: 2017-11-24
OTTO BOCK HEALTHCARE IP GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A problem with prosthetic knee joints with variable-length joint parts is the relatively complex structure and the possibility of geometrical locking of the joint system during descent during flexor contraction during the stance phase

Method used

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Experimental program
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Effect test

Embodiment Construction

[0021] figure 1 The embodiment of the prosthetic knee joint shown in has an upper part 10 on which a fastening device 11 configured as a joint hanger for a telecentric prosthetic part is arranged, for example for fastening the prosthetic knee joint to the thigh Tube or thigh tube. The fastening device 11 can be screwed into the upper part 10 or can be integrally formed thereon. The first joint part 30 of the four-part joint system 100 can be arranged or formed on the upper part 10 . The proximal, substantially horizontally oriented joint part 30 has an anterior pivot axis 1 and a posterior pivot axis 2 . A front joint member 40 is pivotally supported on the front pivot shaft 1 , and a rear joint member 50 is pivotally supported on the rear pivot shaft 2 . The proximal end of the front joint part 40 is thus pivotably connected via the pivot axis 1 and the proximal end of the rear joint part 50 via the pivot axis 2 to the upper part 10 or to the proximal joint part 30 .

[0...

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Abstract

The invention relates to a prosthetic knee joint with an upper part (10), a lower part (20) arranged on the upper part (10) pivotably relative to the upper part, arranged on the upper part (10) for Fixing device (11) for a proximal prosthetic element, a fixing device (21) for a distal prosthetic element arranged on the lower part (20), and a four-part joint system (100) with four mutually articulated Ground fixed joint parts (30, 40, 50, 60), which can pivot relative to each other around pivot axes (1, 2, 3, 4) respectively, wherein the upper part (10) is arranged in the joint system ( 100), the joint system (100) is supported on the lower part (20) in such a way that it can pivot out of the initial position against the spring force during the contraction of the flexor muscles in the stance phase, and the line of action (F) of the spring force is oriented such that This results in a moment of resistance to bending of the joint system (100).

Description

technical field [0001] The invention relates to a prosthetic knee joint with an upper part and a lower part pivotably arranged on the upper part, with a fastening device arranged on the upper part for a proximal prosthetic element, with a The fastening device for the telecentric prosthetic element on the lower part has a four-part joint system with four joint parts fixed to one another in an articulated manner, which are each pivotable relative to each other about a pivot axis Rotation, wherein the upper part is arranged on the joint system. Background technique [0002] EP 0 713 689 A1 shows a prosthetic knee joint with an upper part and a lower part which is fastened in an articulated manner to the upper part. The upper part and the lower part are coupled via a multi-part kinematic joint chain having at least four joint parts, in which the parts connected to each other are changed to have a common axis of rotation. The axes of rotation extend substantially parallel to ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/64A61F2/50
CPCA61F2002/5009A61F2002/5087A61F2/644A61F2/64A61F2/642A61F2002/5003A61F2002/5007
Inventor H·博伊特
Owner OTTO BOCK HEALTHCARE IP GMBH & CO KG
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