Method and apparatus to detect transponder tagged objects, for example during medical procedures
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United States of America Patent
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Aug 6, 2019
Grant Date -
Dec 7, 2017
app pub date -
Aug 15, 2017
filing date -
Oct 28, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The presence or absence of objects (e.g., medical implements, medical supplies) tagged with transponders may be determined in an environment in which medical procedures (e.g., surgery) are performed via an interrogation and detection system which includes a controller and a plurality of antennas positioned along a patient support structure. The antennas may, for example, be positioned along an operating table, bed, a mattress or pad or a sheet and may be radiolucent. Respective antennas may successively be activated to transmit interrogation signals. Multiple antennas may be monitored for responses from transponders to the interrogation signals. For example, all antennas other than the antenna that transmitted the most recent interrogation signal may be monitored.
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