An intracorporal probe has a flexible and generally nontwistable element having front and rear ends, a flexible and continuous sleeve substantially surrounding and loosely receiving the element between its ends, and a sensor unit mounted on the front end of the element past the sleeve and itself having...http://www.google.fr/patents/US4729384?utm_source=gb-gplus-shareBrevet US4729384 - Balloon assembly for esophageal probe
