Patent ID: 6264612
Filing Date: 2001-07-24
Classification: A61B

Abstract:
A catheter for measuring a physiological condition of a vertebrate, comprising:an elongated catheter having a recess;a conductive member carried by said catheter;a piezoresistive pressure sensor having a top surface, and a bottom surface, said sensor defining a trough in said top surface, said pressure sensor located in said recess;a mechano-responsive element comprising one of a fluid and a gel encapsulated in said trough to transfer the condition acting upon said element to said sensor and a permeable membrane encapsulating said mechano-responsive element in said trough; anda circuit integrated with said conductive member, said pressure sensor being directly electrically coupled to said circuit, said sensor and circuit for measuring the physiological condition.2.The catheter of claim 1, wherein said gel is encapsulated in said trough for direct communication with the condition being sensed.