Journal ArticleDOI
Data transmission from an implantable biotelemeter by load-shift keying using circuit configuration modulator
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TLDR
In this article, a load-shift keying using circuit configuration modulator (LSK-CCM) was developed to perform data transmission from an implantable telemeter using reflected impedance property of an inductive couple.Abstract:
Using the reflected impedance property of an inductive couple (transformer), a modulation method, load-shift keying using circuit configuration modulator (LSK-CCM), was developed to perform data transmission from an implantable telemeter. With a very simple circuit, this method utilizes a radio-frequency electromagnetic field induced with a single pair of coils to transmit power into the implant and data out of it. >read more
Citations
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Patent
Analyte Monitoring Device And Methods Of Use
James Say,Michael F. Tomasco,Adam Heller,Yoram Gal,Behrad Aria,Ephraim Heller,Phillip John Plante,Mark S. Vreeke,Keith A. Friedman,Fredric C. Colman +9 more
TL;DR: An analyte monitor includes a sensor, a sensor control unit, and a display unit as discussed by the authors, which is used to display an indication of a level of an analyte, based on the data obtained using the sensor.
Journal ArticleDOI
Wireless implantable microsystems: high-density electronic interfaces to the nervous system
TL;DR: This paper describes the development of a high-density electronic interface to the central nervous system that permits the long-term monitoring of neural activity in vivo as well as the insertion of electronic signals into neural networks at the cellular level.
Patent
System and method for waking an implantable medical device from a sleep state
TL;DR: In this article, a system and method for waking up a satellite implantable medical device ('IMD') from a sleep state in which power consumption by the satellite IMD is essentially zero.
Journal ArticleDOI
Design and analysis of an adaptive transcutaneous power telemetry for biomedical implants
TL;DR: In this article, a power transfer system with adaptive control technique to eliminate the power variations due to the loading or coupling coefficient changes is proposed, where a maximum of 250mW power is transmitted through an optimized coil pair driven by a Class-E power amplifier.
Journal ArticleDOI
A neuro-stimulus chip with telemetry unit for retinal prosthetic device
Wentai Liu,K. Vichienchom,M. Clements,S.C. DeMarco,C. Hughes,E. McGucken,Mark S. Humayun,E. de Juan,James D. Weiland,Robert J. Greenberg +9 more
TL;DR: A microchip which serves as the telemetry protocol decoder and stimulus signal generator is fabricated by MOSIS with 1.2-mm CMOS technology and was demonstrated to provide the desired biphasic current stimulus pulses for an array of 100 retinal electrodes at video frame rates.
References
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TL;DR: Radio frequency has been investigated as a means of externally powering miniature and long term implant telemetry systems and results were within the desired total system efficiency ranges of 18% and 23%, respectively.
Journal ArticleDOI
Analysis of resonant coupled coils in the design of radio frequency transcutaneous links
Nick Donaldson,T A Perkins +1 more
TL;DR: A theory of coupled resonant coils has been developed which makes possible the design of radio frequency transcutaneous links of simultaneously high overall efficiency and good displacement tolerance while keeping circuitry simple while keep circuitry simple (particularly in the implanted receiver).