Novel prosthetic hand without external power

Abstract

The invention relates to a novel prosthetic hand without external power, and belongs to the technical field of disabled assisted instruments. The novel prosthetic hand comprises mechanical fingers, a palm fixing apparatus and a selecting mechanism, wherein each mechanical finger comprises two or three knuckles which are hinged and connected in sequence, the last knuckle of each mechanical finger is hinged onto the palm fixing apparatus, bracing wires are arranged inside the lower parts of the knuckles, one end of each of the bracing wires is fixed to the interior of the lower part of the corresponding first knuckle, a through hole capable of enabling the corresponding bracing wire to pass through is formed in the lower part of the remaining one or two knuckles of each mechanical finger, the other ends of the bracing wires penetrate through the through holes in the lower parts of the knuckles in sequence and are connected to the selecting mechanism through the through holes in the palm fixing apparatus, and an elastic wire is arranged inside the upper part of each knuckle; a fixing strap is arranged on the palm fixing apparatus, the power for bending the fingers comes from the strength of a palm, and the selecting mechanism can control the amount of bent fingers. The novel prosthetic hand is comfortable to wear, simple and reliable in structure, easy to control, high in universality and low in cost, the power is provided in virtue of the arm strength of a user, and an external power device is not required.

Description

Technical field: [0001] The invention belongs to the technical field of assisting devices for the disabled, and in particular relates to a novel non-external power prosthetic hand suitable for disabled persons missing part or all of their fingers. Background technique: [0002] A prosthetic hand is a commonly used device for assisting the disabled. In the early 20th century, western industrialized countries carried out large-scale research on handicapping devices and made significant progress. Western prosthetic hands are mainly developing in the direction of automation and intelligence, and their prosthetic hand products can achieve many movements. It has strong flexibility, but its cost and price are high, its structure is complex and prone to failure, and its maintenance and repair are all troublesome. The research and development of prosthetic hands in China is relatively slow, and handicapped products generally have problems such as poor versatility, poor flexibility a...

AI Technical Summary

Problems solved by technology

In the early 20th century, western industrialized countries carried out large-scale research on handicapping devices and made significant progress. Western prosthetic hands are mainly developing in the direction of automation and intelligence, and their prosthetic hand products can achieve many movements. Strong flexibility, but its cost and price are high, the structure is complex and prone to failure, maintenance and repair are more troublesome

The research and development of prosthetic hands in China is relatively slow, and there are generally problems such as poor versatility, poor flexibility and poor practicability in handicapped products

Due to the small size of the prosthetic hand, the power mechanism on the prosthetic hand is extremely demanding. It must meet the requirements of small size and high power, and the cost will increase accordingly.

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