Fault detection circuit for permanently implanted cardioverter
US4164946A · kind A · utility
113Cited by
5References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 27, 1977 |
| Grant date | Aug 21, 1979 |
| Priority date | — |
| Expiry date | May 27, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3931
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed is a permanently implantable cardioverter, or defibrillator including built-in interrogation and testing circuitry. Implanted fault detection circuits react to malfunctions in the implanted fibrillation detection circuitry, and ensure that inappropriate defibrillation pulses are not delivered to the wearer. Also disclosed is an implantable externally actuatable interrogation and test circuit which interrogates the sensing circuitry for faults, and which delivers a realistic defibrillation pulse to an implanted test load. An external device for monitoring the operation of the implanted defibrillator is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.