Improvements relating to catheter positioning

摘要

A catheter which includes means to measure local pressure at two or more points along the catheter body is described. The points are preferably located in two different pressure areas, more preferably across a valve in a vessel, organ or similar. The invention provides a method of gauging the positional location of a catheter in a blood vessel, organ or similar, either by the catheter having means to monitor the local pressure at two or more points along the catheter body, or means to measure pressure at a single point along the catheter body, which catheter is moveable to detect pressure differential measurements. The invention can be used to more accurately have knowledge of the position of a blood vessel, by means of a heat transfer device.