Thermally actuated artificial muscle-based prosthetic finger
By combining a thermo-actuated artificial muscle prosthesis with a thermo-actuated material and a prosthetic finger skeleton, the integration of drive and transmission is achieved, solving the problems of complex structure, heavy weight, and insufficient bionic motion of the prosthetic hand, and achieving the effects of structural simplification, weight reduction, and high bionic motion.
WO2026123208A1PCT designated stage Publication Date: 2026-06-18SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
- Filing Date
- 2024-12-10
- Publication Date
- 2026-06-18
Smart Images
Figure CN2024138172_18062026_PF_FP_ABST
Abstract
Provided is a thermally actuated artificial muscle-based prosthetic finger, which comprises a prosthetic finger skeleton, a first artificial muscle (01) attached to a flexion side of the prosthetic finger skeleton, and a second artificial muscle (02) attached to an extension side of the prosthetic finger skeleton. The first artificial muscle (01) and the second artificial muscle (02) are made of unidirectionally actuated shape memory polyurethane. The prosthetic finger further comprises a heating mechanism configured to actuate the first artificial muscle (01) and the second artificial muscle (02). According to specific driving and transmission parameters required for a finger target action, the unidirectionally actuated shape memory polyurethane is selected as an artificial muscle material. A network structure composed of segments (hard segments and soft segments) is constructed. By adjusting and controlling the response temperature, degree of orientation, crystallinity, modulus, and microscopic driving force, a biomimetic match with the motion variables of the finger is achieved.
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