ThinKing February – The world's first prosthetic hand with a sense of touch weighing only 320 grams

29.01.2015

 

Vincent Systems GmbH based in Karlsruhe has developed and introduced the world's first prosthetic hand with a sense of touch through incorporating several lightweight building principles.

Vincent Systems GmbH based in Karlsruhe has developed and introduced the world's first prosthetic hand with a sense of touch through incorporating several lightweight building principles.

The VINCENTevolution2 combines low weight with groundbreaking functionality for bionic prosthetic hands. The new hand offers anatomic proportions closer to reality than ever before. Small specially engineered motors are integrated into a compact and robust structure constructed out of lightweight aluminum-magnesium alloys.

The Baden-Württemberg public service agency for lightweight technology is featuring this impressive innovation in its ThinKing February. The agency presents a new “thin king” every month to introduce innovative products or services from the lightweight construction sector in Baden-Württemberg.

Fingers controlled by muscle signals

The highly complex prosthetic VINCENTevolution2 has the form, dimensions and tactility of a real hand. All of the fingers can be moved by electromotors. All previous electronic models were heavier than a human hand due to the technology required. The new bionic model by Vincent Systems weighs only 380 grams with about the same as dimensions, weight and anatomic form of human hand.

The delicate prosthetics are driven by six small battery powered motors. They allow a selection of 12 different grips, 20 hand positions and any number of positions in between to be controlled by the user through two muscle signals, so called EMG signals, instantly and without any assistance. Just looking at the end positions of the single finger joints alone, the combination allows for 64 different hand positions.

Light gears reduce weight by 13 percent

Great care was taken to optimize the weight of every part of the prosthetic hand. The Karlsruhe start-up engineered new gears that saved 10 grams of weight, adding up to 60 grams for six motors – for a product weighing a total of only 380 grams.
The light and bionic prosthetic hand is constructed out of high-strength aluminum-magnesium alloys. Other lightweight materials such as carbon and titanium are also used.
VINCENTevolution2 is the first prosthetic hand to have a sense of touch. Through a vibrotactile feedback, the user is able to feel both touch and grip strength through the prosthetic fingertips.

Further information is available at www.vincentsystems.de