VCO driven flyback converter for implantable cardoverter/defibrillator
US5265588A · kind A · utility
42Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1992 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Jan 15, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/948
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A battery powered cardioverter or defibrillator employing output capacitors for delivery of cardioversion or defibrillation pulses. The capacitors are charged by means of a step-up transformer, coupled and uncoupled from the battery by means of a voltage controlled oscillator which varies its off and on times as a function of the voltage on the battery and the voltage stored on the output capacitor to allow for rapid charging of the capacitor even under conditions of battery depletion. The voltage controlled oscillator is constructed to provide a highly accurate timing signal with a low current drain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.