Apparatus and method for positioning a sensor away from the blood vessel wall
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United States of America Patent
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-
Feb 8, 1994
Grant Date -
N/A
app pub date -
Jul 9, 1991
filing date -
Jul 9, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus and method for positioning a probe through a catheter wherein a sensing element on the probe is located outside the catheter but is spaced from the luminal surface of the blood vessel to prevent any adverse effect on the sensor measurement. A standard introducer catheter may be used and a support tube is provided around a portion of the probe and is slidably engagable within the catheter lumen for positioning the probe against an anterior wall of the catheter, away from a posterior vessel wall on which the catheter lies. In a second embodiment, a portion of the support tube extends outside the distal end of the catheter to prevent any possible contact between the sensing element and posterior vessel wall.
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