Wireless system for measuring distension in flexible tubes
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United States of America Patent
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N/A
Issued Date -
Jul 8, 2004
app pub date -
Jul 25, 2003
filing date -
Mar 27, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A wireless sensing system is configured to measure the distension of a flexible tube. The system includes a sensing unit having a sensor element that attaches to the tube and which causes a quiescent frequency produced by the sensing unit to change when the sensor element is physically distorted by distension of the tube. A scanning unit of the system remotely and wirelessly triggers the sensing unit to power up and transmit a modulated signal to the scanning unit for decoding, where the decoded signal indicates a measured quiescent frequency of the sensing unit. The wireless sensing system may be employed, for example, to measure the distension of a blood vessel for the purpose of monitoring blood pressure.
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