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Electric Powered Myo-electric

Myo-electric or switch powered prostheses tend to be very popular and are definitely receiving the most attention from researchers. Technological advances are allowing this type of prosthesis to provide function that most closely mimics the human hand. There are electronic devices available to provide active elbow lifting capabilities, wrist rotation and prehensile grips closely matching that of the human body. Of course technology is still needing to catch up to imagination, however, there are exciting possibilities on the horizon.

There is talk of a hand that has between 19 and 22 degrees of freedom, while the hand with the most advanced capability commercially available has 5 degrees of freedom (motions). Myo-electric prostheses allow for upper extremity prostheses to be controlled through the use of muscle signal recognition (EMG) and amplify these signals to allow a micro-processor to signal instantaneous control of a hand wrist or elbow. These prostheses can be self-suspending allowing avoidance of harnesses or bulky suspension techniques often seen in body-powered prostheses. They also enable more function about and outside of the body envelop, enabling improved options for use and freedom to utilize a prosthesis similar to the sound side limb.

Often myo-electric controls can be used in conjunction with switch powered controls to enable simultaneous control of an elbow and a hand at the same time. Finally myo-electric prostheses can be fitted to enable changing of different terminal devices enabling patients to switch between a more cosmetic hand or a more durable, functional greifer or electric hook.


Otto Bock SensorHand® SPEED
With a dizzying 300mm per second opening/closing speed and enhanced EMG signal processing, the new SensorHand® SPEED has unmatched speed and responsiveness. In addition, our unique AutoGrasp feature keeps held objects from slipping by monitoring and changing grip force as needed.
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Otto Bock DynamicArm 12K100
The DynamicArm 12K100 raises elbow function to the next level! It actively lifts loads weighing up to 13 lbs (6kg). It responds twice as fast as other elbows (0.5 seconds from full flexion to extension). The DynamicArm features AXON Bus technology that delivers virtually instantaneous responsiveness to the user.
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Touch Bionics i-LIMB Hand
Touch Bionics is a leading developer of advanced upper-limb prosthetics (ULP). One of the two products now commercially available from the company, the i-LIMB Hand, is a first-to-market prosthetic device with five individually powered digits. This replacement hand looks and acts like a real human hand and represents a generational advance in bionics and patient care.
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Motion Control Utah Arm 3
Microprocessor technology was incorporated into the Utah Arm 3 in 2004. Two microcontrollers are programmed for the elbow and hand, thus allowing separate inputs and therefore simultaneous control of both, i.e., the wearer can operate the elbow and hand at the same time for more natural function than was possible before. In addition, the U3 uses a computer interface which greatly simplifies fine tuning the elbow and hand controls.
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Motion Control Electric Terminal Device
Motion Control's ETC integrates the dependable MC Hand Drive with water resistant housings. The ETD can be used on the Utah Arm or ProControl system and is available with flexion wrist or the ProHand feature. The rugged and handsome design includes classic APRL lyre-shaped fingers that open wide, as well as a  quick-disconnect wrist with our patented Safety Release feature. And it only weighs 14 oz.
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