Acquisition circuit for cardiac pacer
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United States of America Patent
Stats
-
Nov 5, 1985
Grant Date -
N/A
app pub date -
Mar 7, 1984
filing date -
Mar 7, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An acquisition circuit for a cardiac pacer includes an oscillator for producing an externally generated magnetic signal at a first predetermined frequency. An implantable cardiac pacer has a tuned inductor coil to be responsive to the magnetic signal for developing an induced signal with a phase-shift. Light-emitting devices are responsive to the magnetic signal and the induced signal are provided for transmitting optical signals which change gradually from flashing to a steady on condition when the telemetry head is moved closer to and adequately positioned over the cardiac pacer to indicate that positive acquisition has been obtained.
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