METHODS AND DEVICES FOR FLUID ENHANCED MICROWAVE ABLATION THERAPY
First Claim
1. A microwave ablation device, comprising:
- an elongate body havingan inner conducting element surrounded by a dielectric insulator,an outer conducting element coaxially disposed around the dielectric insulator and defining an outer wall, andat least one fluid channel extending through the elongate body parallel to a longitudinal axis of the microwave antenna, the at least one fluid channel including at least one opening to allow fluid to flow into tissue surrounding the elongate body;
wherein the inner and outer conducting elements are configured to deliver microwave energy to tissue surrounding the elongate body.
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Abstract
Devices and methods for fluid enhanced ablation therapy using microwave antennas are described herein that provide improved heat transfer into a target volume of tissue and improved antenna cooling compared to prior art designs. In one embodiment, fluid can be introduced into a target volume of tissue along with the delivery of therapeutic energy from a microwave antenna positioned within the target volume of tissue. The fluid can become heated by cooling the microwave antenna and, if additional heating of the fluid is desired, a heating element disposed within the microwave antenna can supplementally heat the fluid prior to introduction into the target volume of tissue.
28 Citations
9 Claims
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1. A microwave ablation device, comprising:
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an elongate body having an inner conducting element surrounded by a dielectric insulator, an outer conducting element coaxially disposed around the dielectric insulator and defining an outer wall, and at least one fluid channel extending through the elongate body parallel to a longitudinal axis of the microwave antenna, the at least one fluid channel including at least one opening to allow fluid to flow into tissue surrounding the elongate body; wherein the inner and outer conducting elements are configured to deliver microwave energy to tissue surrounding the elongate body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9-20. -20. (canceled)
Specification