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Method and device for controlling an artificial orthotic or prosthetic knee joint

A joint and artificial technology, applied in artificial legs, manufacturing tools, program-controlled manipulators, etc., can solve problems that cannot be used, are not expected by the wearer, and hip bone flexion

Active Publication Date: 2014-11-26
OTTO BOCK HEALTHCARE PROD GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A problem with the use of extension assist springs in the context of hip prostheses is that the hipbone flexes when unloaded, which is expected as a flexion aid during normal walking, but the wearer is brought into the wrong position when walking backwards. in expected condition
This solution cannot be used on brake devices for modern prosthetic knee joints with controlled impedance devices

Method used

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  • Method and device for controlling an artificial orthotic or prosthetic knee joint
  • Method and device for controlling an artificial orthotic or prosthetic knee joint

Examples

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Embodiment Construction

[0028] figure 1 shows a prosthesis with a thigh part 1 and a lower leg part 2 supported in an articulated manner on the thigh part. A prosthetic foot 3 is arranged on the distal end of the lower leg part 2 . The lower leg 2 is hingedly connected to the thigh 1 via a prosthetic knee joint 4 . The thigh part 1 is designed in the form of a thigh tube, so that the thigh stump can be inserted and fixed therein. Inert angle α I is the absolute angle of the joint part with respect to the vertical, from which the inertial angular velocity ω is obtained as the time derivative of the inertial angle I . From the standing position, when walking backwards, the leg to be attended (here the prosthesis) moves backwards, ie opposite to the normal viewing direction of the prosthesis user. This results in: the inertia angle α of the calf portion 2 relative to the direction of gravity (the direction of gravity is represented by the gravity vector g) I At first it increases until the prosthe...

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PUM

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Abstract

The invention relates to a method for controlling an artificial orthotic or prosthetic joint of a lower extremity with a resistance unit to which at least one actuator is associated, via which the bending and / or stretching resistance is changed depending on sensor data. During the use of the joint, status information is provided via sensors. The invention further relates to a device for carrying out such a method. According to the invention, the bending resistance is increased or not lowered in the standing phase, when an inertial angle of a lower leg part decreasing in the direction of the vertical and a front foot under pressure at the same time are identified.

Description

technical field [0001] The invention relates to a method for controlling an artificial orthotic or prosthetic joint of a lower extremity with an impedance device, to which at least one actuator is assigned, by means of which the flexion resistance and / or the extension resistance is varied as a function of sensor data , wherein state information is provided by sensors during use of the joint, and the invention also relates to a device for carrying out such a method. The invention proposes to increase or not reduce the flexion resistance during the stance phase when the ascertained inertia angle of the lower leg decreases in the direction of the vertical and at the same time the forefoot is loaded. In addition to the use in prosthetic knee joints, the devices and methods described can also be advantageously used in hip prostheses, in particular. Background technique [0002] A problem with the use of extension assist springs in the context of hip prostheses is that the hipbon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/64A61F2/68
CPCA61F2002/7625A61F2002/5033A61F2002/7615A61F2/68A61F2/64A61F2002/5003A61F2002/6818A61F2/70A61F2002/704A61F2002/701G05D1/02B25J9/16
Inventor M·赛伊R·帕弗利克C·波普P·肯帕斯
Owner OTTO BOCK HEALTHCARE PROD GMBH