Transcutaneous electric nerve stimulater
US4949721A · kind A · utility
81Cited by
4References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 4, 1989 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Aug 4, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36021
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a transcutaneous electric nerve stimulater in which a frequency of an output pulse varies with a lapse of time, a pulse width of the output pulse is increased when the frequency becomes to be smaller and is reduced when the frequency becomes to be greater. Furthermore, a pulse amplitude of the output pulse is increased when the frequency becomes to be smaller and is minimized when the frequency becomes to be greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.