UH-MIGUEL

UH-MIGUEL is a low-cost body-powered underactuated hand prosthesis. It is manufactured using only a domestic 3D printer and two different materials: PLA and Filaflex. This hand is the result of the final project of Miguel Martínez for the Mechanical Engineering degree.

The fingers and thumb, with three phalanges, close thanks to a thin and strong cord. The metacarpal phalange of the thumb has a fixed optimized position. The extensión motion is achieved thanks to the internal flexible "bone" of the fingers (made of Filaflex) and to elastic rubber bands located in the dorsal part of the fingers.

The underactuation system is based on a system of sliding pulleys located in the forearm that allows adaptive grasping.

Tests in UJI-Hand competition

This hand has been tested by healthy subjects with an arm adaptor (Procuff), in several activities of daily living, during the UJI-Hand competition, demonstrating a quite good performance, being the winner in this competition.

UH-MIGUEL attached to the Procuff adaptor

Results in Box and Blocks test (BBT)

The hand was tested by 2 subjects with the BBT indicating a good performance compared to a commercial prosthetic gripper (TRS-Grip3)

TRS-Grip3

UH-MIGUEL

Page updated

Report abuse