Method and end effector for tissue ablation
AssigneeExpandoheat, L.L.C.
InventorGennady I Kleyman
Life of this patent
Estimating the term…
Abstract
An end effector structure provided for an ablation apparatus, optionally having a covering balloon structure made from a compliant material such as rubber like materials, as for example silicone, including an antenna to emit microwave energy for cavity ablation that is covered with microwave energy absorbing and heat radiating material so that when end effector inserted into the body cavity, the balloon is filled up with liquid and balloon stretches to conform to a profile of the cavity to be ablated, and the applied microwave energy heats the liquid inside the balloon and heat energy to ablate or otherwise treat the body cavity tissue contacted with the compliant end effector. Other embodiments without the covering balloon apply heat directly to the cavity with the heated liquid.
Claims15
An ablation apparatus, comprising:
- an elongated member having a first end configured to radiate microwave energy and a second end configured to receive microwave energy from a microwave source;
- a sleeve having an inner and outer surface, and a length, and comprising a microwave absorbing material covering along its length and directly in contact with said first end configured to radiate microwave energy, and is configured to radiate heat energy in response to said radiated microwave energy;
- and
- a liquid delivery member disposed to provide a flow of liquid only over and around said sleeve outer surface proximal to and heated by contact with said sleeve which includes said microwave absorbing material, and said flow of liquid receiving said heat energy radiated by said sleeve, to be configured to ablate surrounding tissue by the heated flow of liquid, wherein
- said sleeve is disposed to separate said elongated member from said flow of liquid, and
- said sleeve inner surface faces said elongated member first end and said sleeve outer surface faces away from said elongated member first end.
An ablation apparatus, comprising:
- an elongated member having a first end configured to radiate microwave energy and a second end configured to receive microwave energy from a microwave source;
- a sleeve having an inner and outer surface, and a length, and comprising a microwave absorbing material covering along its length and directly in contact with said first end configured to radiate microwave energy, and is configured to radiate heat energy in response to said radiated microwave energy;
- and
- a liquid delivery member disposed to provide a flow of liquid only over and around said sleeve outer surface proximal to and heated by contact with said sleeve which includes said microwave absorbing material, and said flow of liquid receiving said heat energy radiated by said sleeve, to be configured to ablate surrounding tissue by the heated flow of liquid, wherein
- said sleeve is disposed to separate said first end configured to radiate microwave energy from said flow of liquid, and
- said sleeve inner surface faces said first end configured to radiate microwave energy and said sleeve outer surface faces away from said elongated member first end.
Dependencies are inferred from the claim text.