Pulse to sinewave telemetry system

Surgery – Truss – Pad

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

128903, A61N 136

Patent

active

047413409

ABSTRACT:
A telemetry system for communicating with a tank circuit contained in a pacer implanted in a patient includes a telemetry coil and a capacitor connected to the telemetry coil for forming a resonant tank. The telemetry coil is positionable externally on the patient's skin substantially overlying the implanted pacer. The resonant tank has a varying impedance in response to telemetered digital data signals from the implanted tank circuit. A clock oscillator generates a squarewave at a selected frequency. A delayed clock-to-pulse converter is responsive to the squarewave for generating drive pulses which are slightly delayed from the leading edges of the squarewave. A coil driver generates a sinusoidal carrier waveform having a varying amplitude and frequency in response to the drive pulses and to the varying impedance of the resonant tank. A sample and hold circuit is provided for sampling each cycle of the sinusoidal carrier waveform of the varying amplitude and frequency to provide a sample and hold signal. An output circuit is coupled to the sample and hold circuit for recovering of the telemetered digital data signal in the form of a binary pulse-width modulated signal.

REFERENCES:
patent: 3650276 (1972-03-01), Burghele et al.
patent: 4220156 (1980-09-01), Schulman et al.
patent: 4223679 (1980-09-01), Schulman et al.
patent: 4281664 (1981-08-01), Duggan
patent: 4361153 (1982-11-01), Slocum et al.
patent: 4453162 (1984-06-01), Money et al.
patent: 4528987 (1985-07-01), Slocum
patent: 4550731 (1985-11-01), Batina et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Pulse to sinewave telemetry system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pulse to sinewave telemetry system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulse to sinewave telemetry system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1500297

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.