Terrain self-adaptive biomimetic ankle device

An adaptive, bionic ankle technology, applied in the direction of ankle joints, joint implants, joint implants, etc., can solve the problems of high price, ankle joint fixation, complex structure, etc., and achieve a wide range of applications, ensure stability, compact effect

Inactive Publication Date: 2010-07-28
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, a hydraulic bionic ankle has been produced in the UK, which can realize the adaptation of the ankle joint angle of going up/down stairs or up/downhill, but the damping force of this kind of ankle joint is fixed and cannot adapt to the needs of patients with different wei

Method used

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  • Terrain self-adaptive biomimetic ankle device
  • Terrain self-adaptive biomimetic ankle device
  • Terrain self-adaptive biomimetic ankle device

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Such as Figure 1 to Figure 3 As shown, the terrain-adaptive bionic ankle joint device of the present invention includes a calf stem interface seat 1, a hydraulic cylinder connecting sleeve 2, a rotary micro hydraulic cylinder body 3, a hydraulic cylinder sealing plate 4, a rotary hydraulic piston 5, and a piston shaft 6. Plantarflexion damping adjuster fixing sleeve 7, plantarflexion damping adjuster 8, plantarflexion damping control spring 9, plantarflexion shut-off needle valve 10, dorsiflexion damping adjuster fixing sleeve 11, dorsiflexion damping adjuster 12, dorsiflexion Damping control spring 13, dorsiflexion shut-off needle valve 14.

[0022] Such as figure 2 As shown, the interior of the rotary micro-hydraulic cylinder 1 is a central passage, and the internal arc surface forms an open chamber. Type hydraulic piston 5 bottom then emb...

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Abstract

The invention relates to a terrain self-adaptive biomimetic ankle device comprising a crus dry interface seat, a hydraulic cylinder connecting sleeve and a rotary micro hydraulic cylinder; liquid cylinder sealing plates are arranged on two sides of the rotary micro hydraulic cylinder; oil liquid is filled in the rotary micro hydraulic cylinder; an inner cavity of the rotary micro hydraulic cylinder is a sectional main chamber; the middle at the lower end of the sectional main chamber is connected with a piston rotating shaft fixedly connected with a rotary hydraulic piston by which the sectional main chamber is divided into a left chamber and a right chamber; the left chamber and the right chamber are respectively communicated with a plantar flexion pipeline and a dorsal flexure pipeline; and a plantar flexion damping system and a dorsal flexure damping system which are arranged at the bottom of the rotary micro hydraulic cylinder are respectively arranged in the plantar flexion pipeline and the dorsal flexure pipeline. The human ankle rotation can be simulated by using the rotary hydraulic piston to rotate in the hydraulic cylinder round a rotating center; meanwhile, the stability of the ankle at any angle can be kept by using a damping force generated by the flowing of oil liquid between the left chamber and the right chamber through a needle valve.

Description

technical field [0001] The invention relates to a prosthetic foot bionic ankle joint device based on a rotary micro-hydraulic cylinder, in particular to a rotary micro-hydraulic cylinder for simulating the movement of the human ankle joint, and a bionic ankle joint device that can adjust the ankle joint according to different patient weights and paces. Joint damping force, so as to adapt to the ankle joint damping adjustment mechanism of different terrains with the best stability and flexibility. Background technique [0002] According to the results of the second national sampling survey of disabled people in 2006, the number of physically disabled people in my country has reached more than 24 million, of which more than 2 million are amputees. Especially in recent years, the number of amputations due to car accidents, industrial accidents, diabetes, and cardiovascular diseases is still on the rise. Therefore, the rehabilitation of a large number of amputees puts forward ur...

Claims

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Application Information

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IPC IPC(8): A61F2/42
Inventor 喻洪流简卓
Owner UNIV OF SHANGHAI FOR SCI & TECH
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