A multiple antenna ablation apparatus includes an electromagnetic energy source, a trocar including a distal end, and a hollow lumen extending along a longitudinal axis of the trocar, and a multiple antenna ablation device with three or more antennas. The antennas are initially positioned in the trocar lumen as the trocar is introduced through tissue. At a selected tissue site the antennas are deployable from the trocar lumen in a lateral direction relative to the longitudinal axis. Each of the deployed antennas has an electromagnetic energy delivery surface of sufficient size to, (i) create a volumetric ablation between the deployed antennas, and (ii) the volumetric ablation is achieved without impeding out any of the deployed antennas when 5 to 200 watts of electromagnetic energy is delivered from the electromagnetic energy source to the multiple antenna ablation device. At least one cable couples the multiple antenna ablation device to the electromagnetic energy source.

Multiple antenna ablation apparatus and method

A tissue ablation apparatus includes a delivery catheter with distal and proximal ends. A handle is attached to the proximal end of the delivery catheter. At least partially positioned in the delivery catheter is an electrode deployment device. The electrode deployment device includes a plurality of retractable electrodes. Each electrode has a non-deployed state when it is positioned in the delivery catheter. Additionally, each electrode has a distended deployed state when it is advanced out of the delivery catheter distal end. The deployed electrodes define an ablation volume. Each deployed electrode has a first section with a first radius of curvature. The first section is located near the distal end of the delivery catheter. A second section of the deployed electrode extends beyond the first section, and has a second radius of curvature, or a substantially linear geometry.

Multiple electrode ablation apparatus

A method and apparatus applies radiant energy through the skin to underlying collagen tissue without substantially modifying melanocytes and other epithelial cells in the epidermis. A membrane is adapted to receive an electrolytic solution and become inflated to substantially conform a contacting exterior surface of the membrane to a skin layer. The membrane includes a cooling lumen for receiving cooling fluid. One or more thermal electrodes positioned in the membrane and transfers thermal energy to the electrolytic solution. The electrolytic solution and cooling fluid creates a reverse thermal gradient from the skin surface to the underlying collagen tissue. A thermal power source is coupled to the thermal electrodes, and a source of electrolytic solution is coupled to the membrane.

Method and apparatus for controlled contraction of collagen tissue

A fluid delivery apparatus for introducing a fluid cooling media to a skin surface includes a template with a skin interface surface. An energy delivery device is coupled to the template. A fluid cooling media introduction member is coupled to the template. Resources controllably deliver energy from the energy delivery device to the skin surface. In a related embodiment, the resources are configured to controllably deliver the flowable cooling media to the introduction member. In another embodiment, a sensor is coupled to the resources and to the skin surface.

Fluid delivery apparatus

Tissue remodeling apparatus containing cooling fluid

The apparatus comprises a power amplifier (12) ; a remote electrode apparatus (32) receiving a high power electrical supply from the power amplifier ; a power transmission ap­paratus (30) arranged to electrically couple the power amplifier to the remote electrode apparatus for supply of electrical power thereto ; and capacitive matching apparatus (14) for providing real time capacitive matching between the power amplifier and the capacitive load across the elec­trode apparatus. Application in treatment of malignant tumors.

Raviv Weber

Papers

Apparatus for medical treatment by hyperthermia