Journal ArticleDOI
Micromodular implants to provide electrical stimulation of paralyzed muscles and limbs
T. Cameron,Gerald E. Loeb,Raymond A. Peck,Joseph H. Schulman,Primoz Strojnik,Philip R. Troyk +5 more
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TLDR
Describes the design, fabrication, and output capabilities of a microminiature electrical stimulator that can be injected in or near nerves and muscles and used successfully for chronic stimulation in hindlimb muscles of cats.Abstract:
Describes the design, fabrication, and output capabilities of a microminiature electrical stimulator that can be injected in or near nerves and muscles. Each single channel microstimulator consists of a cylindrical glass capsule with hermetically sealed electrodes in either end (2-mm diameter/spl times/13-mm overall length). Power and digital control data can be transmitted to multiple implants (256 unique addresses) via a 2-MHz RF field created by an external AM oscillator and inductive coil. In vitro testing demonstrated accurate control of output pulsewidth (3-258 /spl mu/s in 1-/spl mu/s steps) and current (0-30 mA in two linear ranges of 16 steps each, up to 8.5 V available compliance voltage). Microstimulators were used successfully for chronic stimulation in hindlimb muscles of cats. Design and fabrication issues affecting yield and reliability of the packaging and electronics are discussed.read more
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References
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Journal ArticleDOI
Sacral anterior root stimulators for bladder control in paraplegia: the first 50 cases.
TL;DR: The first 50 patients who have received sacral anterior root stimulator implants are presented, with follow-up of from 1 to 9 years, and 39 are alive and 43 are regularly using their implants for micturition.
Journal ArticleDOI
The bionic glove: An electrical stimulator garment that provides controlled grasp and hand opening in quadriplegia
TL;DR: The Bionic Glove can provide significant improvement of hand function in people with C6-C7 SCI, as judged by the number of tasks completed in a minute or the subjects' qualitative ratings of task difficulty.
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Activated Ir: An Electrode Suitable for Reversible Charge Injection in Saline Solution
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Diaphragm pacing by electrical stimulation of the phrenic nerve.
TL;DR: The authors prefer stimulation of the phrenic nerve in the thorax using a platinum ribbon electrode placed behind the nerve and an attached subcutancously implanted radiofrequency receiver inductively coupled to an external RF transmitter.
Journal ArticleDOI
RF powering of millimeter- and submillimeter-sized neural prosthetic implants
TL;DR: The feasibility is examined of designing millimeter- and submillimeter-sized power sources based on RF coupling that could be integrated into these implants to provide power without a tethering power cable.