Microwave hyperthermia applicator with variable radiation pattern
US4589424A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 22, 1983 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | Aug 22, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N5/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A direct contact microwave hyperthermia applicator includes a plurality of rectangular waveguide sections each having a radiating aperture. The waveguide sections are mounted with their long sides abutting. A pair of shutter elements for individually varying the radiating aperture is associated with each of the waveguide sections. The shutters can be adjusted to form a desired composite aperture which produces a radiation pattern adapted for efficient hyperthermia treatment of a tumor having a prescribed size, shape and location. Microwave power supplied to the radiating elements can be varied in phase and power level to further control the radiation pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.