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1. (WO2018182913) CRYOGENIC BALLOON PRESSURE SENSOR ASSEMBLY

Pub. No.:    WO/2018/182913    International Application No.:    PCT/US2018/020371
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Fri Mar 02 00:59:59 CET 2018
IPC: A61F 7/12
A61B 5/01
A61B 5/00
Applicants: CRYTERION MEDICAL, INC.
Inventors: HARMOUCHE, Chadi
RYBA, Eric
Title: CRYOGENIC BALLOON PRESSURE SENSOR ASSEMBLY
Abstract:
A cryogenic balloon catheter system includes an inflatable balloon, a handle assembly and a pressure sensor. The inflatable balloon has a balloon interior. The pressure sensor senses a balloon pressure within the balloon interior. In various embodiments, the pressure sensor can be positioned within the balloon interior, within the handle assembly and/or between the inflatable balloon and the handle assembly. The cryogenic balloon catheter system also includes a controller that receives a sensor output from the pressure sensor. The controller can control injection of a cooling fluid to the balloon interior and/or removal of the cooling fluid from the balloon interior based upon the sensor output. The cryogenic balloon catheter system can also include an injection proportional valve, an exhaust proportional valve, an injection flow sensor and/or an exhaust flow sensor.