Method and apparatus for discrimination of ventricular tachycardia from supraventricular tachycardia and for treatment thereof
US5312441A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1992 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Apr 13, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/39622
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable cardioverter including apparatus for measuring the width of a patient's R-wave in order to determine whether or not to deliver an antitachycardia therapy. The means for measuring the width of the R-wave comprises a digitizing means for converting electrical signals from the ventricle to digital signals and means for analyzing the digitized signals to determine the end points of sensed R-waves. End points are identified in response to the occurrence of a series of sequential digitized signals which differ from proceeding signals by more than a predetermined amount, and the width of the R-wave is defined as the interval between the first such identified end point associated with a detected R-wave and the last such detected end point associated with the same detected R-wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.