Prosthetic module

Prosthetic hand module with multi-degree-of-freedom bending and adaptive grasping using elastic members and wires

This technology is a prosthetic hand mechanism that achieves independent bending/extension and adaptive grasping of multi-degree-of-freedom links by distributing the motor's rotational force to each joint frame through elastic members and wires within a transmission frame.

Conventional prosthetic hands suffer from non-independent finger joint movement, making adaptive motion to object shapes impossible and hindering the implementation of natural movements such as finger abduction and adduction.

By placing an elastic member between the motor's rotation axis and the wire tension adjustment plate, this technology enables independent rotation and adaptive grasping of individual links through elastic deformation upon contact with an object. It can be applied to prosthetic hands, rehabilitation aids, and wearable robots to achieve natural grasping tailored to object shapes through independent finger actuation.

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Key Features:

• A mounting section that houses the battery and the motor powered by it to provide power to the prosthetic hand
• A transmission frame including a rotation axis that rotates according to the motor's torque and a first wire tension adjustment plate to which the 1-1 and 1-2 wires are fixed
• A first link including a first joint frame connected to wires that rotate according to the tension of the 1-1 and 1-2 wires
• A third link including a third joint frame connected to 3-1 and 3-2 wires whose tension is adjusted according to the rotation of the rotation axis

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This invention was developed with support from the Ministry of Science and ICT for the development of biomimetic bionic arm mechanisms.