System and method for powering, controlling, and communicating w

Details System and method for powering, controlling, and communicating w System and method for powering, controlling, and communicating w

1998-06-09

2000-04-04

Schaetzle, Kennedy J.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

607 33, 607 60, A61N 108, H02J 1700

Patent

active

060472146

ABSTRACT:
Magnetic Vector Steering (MVS) and Half-Cycle Amplitude Modulation (HCAM) are novel techniques which enhance the powering and control of multiple arbitrarily oriented implant devices. Together, these techniques enable arbitrarily oriented implants to receive power and command, programming, and control information in an efficient manner that preserves battery life and transmission time while reducing overall implant device bulk. By steering the aggregate magnetic field from a near-orthogonal set of AC-energized coils, selected implants can be powered or communicated with at desired times. Communication with individual implants can also be enhanced through half-cycle amplitude modulation--a technique that allows bit rates up to twice the energizing frequency. Unlike prior art systems, power and data transfer can be realized over the same frequency channel.

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Singh et al., "A Mercuric Iodide Detector Unit Implantable and Externally Powered for Use in Radionuclide Tracer Studies in Small Animals", vol. 8, Biotelemetry Patient Monitoring, pp. 204-212 (1981).

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