Passive artificial hand

Abstract

The invention relates to a passive artificial hand. A control rod is pressed to open the artificial hand, the control rod is divided into two portions by a control rod shaft, one portion of the control rod, which extends to a wrist, is used for performing pressing when the artificial hand is opened, the other portion at the other end of the control rod shaft is used for driving artificial fingers to open, the artificial hand and the wrist are connected only on hand back side, enough space is reserved at the wrist so that the control rod can be pressed till the fingers are completely opened, and when the pressed control rod is loosened, the artificial hand is closed by the aid of elasticity of a tension spring. By means of the passive artificial hand, defects of existing passive artificial hands are overcome, the passive artificial hand can achieve practical grabbing function, the design is skillful, the structure is simple, mounting is convenient, appearance is attractive, thereby, high requirements of a user for passive artificial hands can be met, and the passive artificial hand is suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to the technical field of artificial limbs, in particular to a passive artificial hand. Background technique [0002] Passive prosthetic hand is a kind of unpowered prosthetic hand, this kind of prosthetic hand has no power, and joint activities must be completed by hand. At present, the passive prosthetic hand at home and abroad uses a spring to close the fingers. The user needs to directly grasp the prosthetic finger with the healthy hand, and then open the prosthetic hand, so it is very difficult and laborious to open the prosthetic hand. Prevent prosthetic fingers from catching objects, such as the passive spring prosthetic hand product 8K18 from OTTO BOCK, Germany. For users, this kind of prosthetic hand is too inconvenient to use to grasp objects, and its function is very poor. It is rarely used to grasp the body, and generally only plays the role of a decorative prosthetic hand. Therefore, need to invent a kind of innovat...

AI Technical Summary

Problems solved by technology

At present, the passive prosthetic hand at home and abroad uses a spring to close the fingers. The user needs to directly grasp the prosthetic finger with the healthy hand, and then open the prosthetic hand, so it is very difficult and laborious to open the prosthetic hand. Prevent prosthetic fingers from grasping objects, such as the passive spring prosthetic hand product 8K18 of OTTO BOCK in Germany

For users, this kind of prosthetic hand is too inconvenient to grasp objects, and its function is very poor. It is rarely used to grasp the body, and generally only plays the role of a decorative prosthetic hand. At present, there is only this kind of passive prosthetic hand at home and abroad.

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