Method and apparatus for improved prediction of transvenous defibrillation threshold
US5564422A · kind A · utility
14Cited by
2References
14Claims
0Family size
Inventors
Key dates
| Filing date | Apr 3, 1995 |
| Grant date | Oct 15, 1996 |
| Priority date | — |
| Expiry date | Apr 3, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3925
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system and method for predicting the defibrillation threshold energy of a defibrillation lead arrangement by determining the upper limit of vulnerability of the heart by shocking the heart at varying times during the T-wave at decreasing test shock energy levels until fibrillation is induced in the heart. The lowest energy level which fails to induce fibrillation is determined to be the upper limit of vulnerability and the defibrillation threshold is predicted to be an energy level incrementally higher in the range of about 5 Joules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.