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1. (WO2017173528) MEDICAL SYSTEM FOR DELIVERING OPTIMUM CRYODOSE BASED ON TIME TO EFFECT (TTE)

Pub. No.:    WO/2017/173528    International Application No.:    PCT/CA2017/050318
Publication Date: Fri Oct 13 01:59:59 CEST 2017 International Filing Date: Sat Mar 11 00:59:59 CET 2017
IPC: A61B 18/02
A61B 34/00
A61B 34/10
A61B 5/042
Applicants: MEDTRONIC CRYOCATH LP
Inventors: LALONDE, Jean-pierre
Title: MEDICAL SYSTEM FOR DELIVERING OPTIMUM CRYODOSE BASED ON TIME TO EFFECT (TTE)
Abstract:
A system and method for determining the optimum dose of cryotreatment to an area of target tissue to achieve isolation based on the time to effect (TTE). The system may generally include a treatment device, a sensing device, and a processor programmed to calculate the optimum dose of cryotreatment, in seconds, based on TTE. The TTE may be based on electrical signals received by the processor from the sensing device. The processor may be further programmed to automatically terminate a cryoablation procedure when the optimum dose of cryotreatment has elapsed. The optimum dose of cryotreatment may be the time, in seconds, it takes to achieve isolation, which may be the time it takes for an area of tissue to reach approximately - 20 °C.