Paul R Stauffer

US Patent:

48258806, May 2, 1989

Filed:

Jun 19, 1987

Appl. No.:

7/084334

Inventors:

Paul R. Stauffer - San Rafael CA
Toru Satoh - San Francisco CA

Assignee:

The Regents of the University of California - Berkeley CA

International Classification:

A61N 502

US Classification:

128804

Abstract:

An implantable helical coil microwave antenna, particularly adapted for interstitial hyperthermia therapy of cancer, comprises a coaxial cable having a distal end of its outer conductor removed and a helical coil mounted on the exposed inner conductor insulator. A proximal end of the helical coil is separated axially from the distal end of the outer conductor and the distal end of the helical coil is connected to the inner conductor of the coaxial cable feed line. The antenna functions to confine heat to the area immediately surrounding the coil and thus induces substantially identical thermal profiles at varying antenna insertion depths in tissue when the antenna is energized with microwave energy.

US Patent:

63304791, Dec 11, 2001

Filed:

Dec 6, 1999

Appl. No.:

9/455303

Inventors:

Paul R. Stauffer - San Rafael CA

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

A61F 200

US Classification:

607101

Abstract:

A flexible microwave applicator and method of use thereof. The applicator includes a flexible, dielectric-containing compartment (e. g. temperature regulated water or oil) having a variable contour, tissue-engaging surface and an opposite non-tissue-engaging surface and an antenna array adjacent to a non-tissue-engaging surface. The antenna array includes at least one flexible printed circuit board having a front metal surface, a dielectric substrate, a back metal surface, a connection structure for connecting the antenna array to at least one external microwave device, at least one dual concentric conductor aperture on the front surface, and at least one microstrip feedline in communication with the dual concentric conductor aperture and the connection structure. The microwave applicator also includes flexible attachment material for placement over the antenna array and dielectric compartment to allow the microwave applicator to be attached to a subject like a garment which closely conforms to the anatomy portion to be heated. The flexible attachment material may be configured such that the microwave applicator is configured as an appropriately-shaped type of garment, for example, a vest, jacket, cap, hood, blanket, custom shaped conformal wrap, sleeve, or as a pair of shorts.