Wisconsin Alumni Research Foundation

David Mahvi

John Goodwin Webster

Dieter Haemmerich

David James Schutt

Mark Christopher Converse

Fred T Lee, Jr

James A Will

Deshan Yang

John Michael Bertram

Punit Prakash

Andrew S Wright

Ann O'Rourke

Chris D Johnson

An electrode array supports multiple electrodes and energizes them so that adjacent electrodes do not have the same polarity. In one embodiment, the electrodes are held about a circumference outside and surrounding a tumor and opposed electrodes are energized in a round robin fashion to promote current flow through the center of the tumor from a variety of angles.

Circumferential electrode array for tissue ablation

A method of resection of an organ employs a handheld microwave waveguide that receives a microwave signal and applies a substantially planar microwave beam into the organ for coagulation of a strip of tissue in an organ providing a barrier against blood loss during resection operations.

Fan-beam microwave horn for bloodless resection

Efficient ablation with multiple electrodes is obtained by rapidly switching electric power to the electrodes. In this way, shielding effects caused by the field around each electrode which would otherwise create cool spots, are avoided. Complex inter-electrode current flows are also avoided.

Radio-frequency ablation system and method using multiple electrodes

An antenna for microwave tumor ablation provides coaxial antenna conductors surrounded by an insulated sleeve of length and size promoting destructive interference of axial microwave energy passing inside and outside of the sleeve to limit the tail of SAR power toward the skin.

Floating sleeve microwave antenna for tumor ablation

An electrode array allows for rapid ablation of a strip of tissue in an organ providing a barrier to blood loss during resection operations.

Growing community of inventors

Middleton, WI, United States of America

David Mahvi