Re-hydration antenna for ablation

摘要

A system for use with a microwave antenna includes a microwave antenna configured to deliver microwave energy from a power source to tissue and a sensor module in operative communication with the power source and configured to detect a reflectance parameter. The system further includes a jacket adapted to at least partially surround the microwave antenna to define a fluid channel between the jacket and the microwave antenna. A plurality of fluid distribution ports are defined through the jacket and are in fluid communication with the fluid channel to permit the flow of fluid through the jacket. The system further includes a fluid pumping system operably coupled to the power source and configured to selectively provide cooling fluid to the fluid channel for distribution through the fluid distribution ports based on the reflectance parameter.

主权项

1. A system for use with a microwave antenna, comprising:
a microwave antenna configured to deliver microwave energy from a power source to tissue; a sensor module in operative communication with the power source and configured to detect a reflectance parameter; an outer jacket defining a plurality of fluid distribution ports therethrough and adapted to at least partially surround the microwave antenna, the microwave antenna including a radiating portion disposed within the outer jacket, wherein the outer jacket and the microwave antenna are dimensioned so as to define a fluid volume surrounding at least the radiating portion of the microwave antenna, the plurality of fluid distribution ports in fluid communication with the fluid volume and configured to permit the flow of fluid into surrounding tissue; at least one inflow tubing in fluid communication with the fluid volume defined by the microwave antenna and the outer jacket; a helical-shaped inlet tube encircling the radiating portion, the helical-shaped inlet tube in fluid communication with the at least one inflow tubing and the fluid volume; at least one outflow tubing in fluid communication with the fluid volume defined by the microwave antenna and the outer jacket; and a fluid pumping system in communication with the inflow and outflow tubing operably coupled to the power source and configured to selectively provide cooling fluid to the fluid volume for distribution through the fluid distribution ports based on the reflectance parameter.