Implantable defibrillator/pacer using negative voltage supplies
US5545181A · kind A · utility
15Cited by
14References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1994 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Oct 11, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3912
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A configuration for generating single capacitor multiphasic shocks is disclosed, using an H-bridge with four switches to connect an energy storage capacitor to a load with selectable polarity. The improvement concerns referring the negative side of the shock generator to a supply voltage which is negative with respect to pacing and sensing ground, and to connect the battery positive terminal to this same ground. This configuration permits operating the low side switches in the H-bridge, the pace/sense circuits, and the control circuitry from negative supplies derived without inversion from the negative battery terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.