Jan O. Mangual-Soto,Craig Markovitz,Chunlan Jiang,Louis-Philippe Richer
申请号：
US16017449
公开号：
US20180369458A1
申请日:
2018.06.25
申请国别(地区):
US
年份:
2018
代理人:
摘要：
An irrigated ablation system with retrograde flow includes one or more medical devices (e.g., an ablation catheter and sheath) encompassing an irrigation lumen that terminates distally at an irrigation orifice and a drainage lumen that terminates distally at a drainage orifice. One or more pumps are coupled to the irrigation lumen and to the drainage lumen to deliver irrigant through the irrigation lumen and to extract fluid through the at least one drainage lumen. For example, a peristaltic pump can be used to simultaneously deliver irrigant through the irrigation lumen and to extract an equivalent volume of fluid through the drainage lumen. Alternatively, a feedback controller can be used to monitor parameters, such as impedance, pressure, ablation time, and/or irrigant volume, and control based thereon the rate at which the pump extracts fluid.
