Electromagnetic medical applicators
US4589422A · kind A · utility
18Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1984 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | Feb 3, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electromagnetic medical applicator for heating tissue comprises a patch resonator (1) on a substrate (4) of dielectric material backed by a ground-plane (3), and having a layer (7) of dielectric material overlying the resonator inter alia to effect impedance-matching to tissue, in which the substrate includes a volume of magnetic material (5) adjacent the maximum-current region of the resonator in order to reduce the length of the resonator at its resonant frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.