Myocardial revascularization-optical reflectance catheter and method
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United States of America Patent
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-
Dec 9, 2003
Grant Date -
Oct 4, 2001
app pub date -
Jan 19, 2001
filing date -
Jan 21, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A myocardial revascularization device has a catheter suitable for use in a myocardial revascularization procedure, the catheter including an elongate body having a proximal end and a distal end, and tissue-ablating means housed at least partially within the catheter and capable of effectuating tissue ablation adjacent the distal end of the catheter. The device further has an optical reflectance fiber housed within the catheter and coupled to an optical reflectance system. The device is operative to transmit a reflectance signal in the optical reflectance fiber, the reflectance signal including either short optical pulses or low-coherence light. The optical reflectance system is operative to gauge tissue ablation, measure a thickness of tissue adjacent the catheter, and/or determine a position of the distal end relative to adjacent tissue using either of optical time-domain reflectance or optical coherence interferometry.
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