Flexible coil pulsed electromagnetic field (PEMF) stimulation therapy system
US6261221A · kind A · utility
114Cited by
26References
46Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1998 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Mar 2, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/40
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A PEMF therapy system uses a single-coil PEMF transducer for generating PEMF stimulation signals. The coil has a "bi-phasic" operation, such that current flows through it in two directions A drive circuit recovers the flyback energy from the transducer coil and dumps voltage to an energy recovery capacitance circuit. The transducer is thereby energized and de-energized to provide the electromagnetic field. The single coil transducer may be fabricated on a flexible substrate and the wiring may be formed with printed circuit techniques. The same concepts may be applied to series-connected coils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.