A guiding catheter includes a Doppler sensor disposed at a distal end of a flexible shaft. The Doppler sensor can sense a blood flow turbulence level within a chamber of the heart or a blood vessel of the heart. Detecting changes in a blood flow turbulence level is used to assist guiding of the distal...http://www.google.es/patents/US6704590?utm_source=gb-gplus-sharePatente US6704590 - Doppler guiding catheter using sensed blood turbulence levels
Doppler guiding catheter using sensed blood turbulence levels
