Magnetic coil apparatus for heating magnetic substances in biological tissue
US6737618B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Aug 10, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/406
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A magnetic coil arrangement for a magnetic field applicator (1) which heats magnetic or magnetizable substances or solids in biological tissue is disclosed which includes a coolable magnetic yoke (2) with two spaced, opposing pole shoes (7, 8) separated from each other by a exposure volume gap (12) on the magnetic yoke (2). A magnetic coil (22) is assigned to each of the two pole shoes (7, 8) to produce a magnetic alternating field. The magnetic coils are designed as disk coils with helicoidally extending coil windings (39) respectively surrounding the pole shoe end of the assigned pole shoe (7, 8) with a surrounding magnetic coil/pole shoe gap (57). According to the invention, the magnetic coil (22) is respectively arranged in a coil box annularly surrounding the assigned pole shoe (7, 8), with the coil box (9, 10) being provided with at least one cooling air admission port (51, 52, 53) for connection of a cooling air pump and with at least one cooling air discharge port (57, 66).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.