Optically isolated shock circuit for implantable defibrillator
US5626619A · kind A · utility
67Cited by
17References
58Claims
0Family size
Inventors
Key dates
| Filing date | Oct 11, 1994 |
| Grant date | May 6, 1997 |
| Priority date | — |
| Expiry date | Oct 11, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3912
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A defibrillator output circuit utilizes an optically coupled signal for controlling an isolated electronic switch. Variants of the output circuit include coupling via phototransistors or photodiodes for the control of at least one electronic switch. An H-bridge circuit configuration with four switches is connected to a single energy storage capacitor for generating multiphasic shocks across a load. The polarity of the shocks is selectable. Optical coupling methods are employed for driving the high side switches in the H-bridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.