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
Citations
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Journal ArticleDOI
Advanced modeling environment for developing and testing FES control systems
TL;DR: A set of integrated musculoskeletal modeling tools to facilitate the model building process in Simulink and removes run-time constraints on kinetic simulations in SIMM, and allows the development of complex musculOSkeletal models without writing a line of code.
Proceedings ArticleDOI
RF-powered BIONs/spl trade/ for stimulation and sensing
Gerald E. Loeb,Frances J. Richmond,J. Singh,Raymond A. Peck,Wei Tan,Qiang Zou,Nicholas A. Sachs +6 more
TL;DR: Wireless, injectable microdevices are versatile, robust and relatively inexpensive to implant in a variety of sites and applications and to perform stimulation and/or sensing functions and to operate autonomously or with continuous coordination and feedback control.
Patent
Hermetically bonding ceramic and titanium with a Ti-Pd braze interface
TL;DR: A component assembly for use in living tissue comprises: a ceramic part; a metal part; and a titanium palladium (Ti-Pd) interface layer for bonding said ceramic part to the metal part as mentioned in this paper.
Proceedings ArticleDOI
Development of BION/spl trade/ technology for functional electrical stimulation: bidirectional telemetry
TL;DR: In this paper, the authors describe and compare several sensing modalities and bi-directional telemetry schemes that have been developed and are being evaluated to support the requirements of a paralyzed limb.
Journal ArticleDOI
Implantable microstimulator: magnetic resonance safety at 1.5 Tesla.
TL;DR: It is safe for a patient with the microstimulator to undergo MRI at 1.5 Tesla by following specific safety guidelines described herein, and will not pose a hazard after a suitable postimplantation period has elapsed.
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
Journal ArticleDOI
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.