Surgical implement detector utilizing a powered marker
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United States of America Patent
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-
Mar 2, 1993
Issued Date -
N/A
app pub date -
Mar 25, 1992
filing date -
Nov 16, 1989
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for detecting a surgical implement in human or animal tissue has structure for defining a transmitting zone encompassing a surgical wound in the tissue. A battery powered marker is secured to a surgical implement positioned within the wound. Field generating structure is provided for generating within the transmitting zone an electromagnetic field having a predetermined frequency band. A signal generator generates a signal having a predetermined frequency band. The signal generator is operative to cause the field generating structure to generate the electromagnetic field, providing the marker with signal identity. A detector having an antenna located within the transmitting zone of the marker detects the marker signal irrespective of the marker's orientation therewithin.
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