Electrical stimulation therapy using decaying current pulses
US9259571B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2009 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Oct 7, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This disclosure describes generation of electrical stimulation pulses for electrical stimulation therapy. The stimulation pulses have a pulse current level and pulse width, and may be generated by a current regulator. The pulse voltage level may be a voltage level delivered by the current regulator while maintaining regulation of the pulse current level. During delivery of a pulse, a supply voltage level may decrease due to discharging of a supply capacitance, and the pulse voltage level may increase due to charging of a load capacitance. The pulse current level may be controlled to decrease during the pulse width such that a sum of the pulse voltage level and a headroom voltage of the current regulator does not exceed the supply voltage level. In some examples, the pulse may include sub-pulses with different sub-pulse current levels, where an earlier sub-pulse has a higher pulse current level than a later sub-pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.