Pacemaker with sudden rate drop detection based on QT variations
US6721599B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 2001 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | May 10, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/365
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention provides an implantable medical device system and method for determining when a patient is undergoing a sudden rate drop (SRD) that should be treated by intervention therapy. Two SRD detection algorithms are provided. A first algorithm is a rate-based algorithm that looks for rate drops that meet stored SRD criteria, and a second algorithm is a QT-based algorithm that detects when QT variations meet criteria that are associated with rate changes characteristic of onset of NMS. The system provides for a plurality of different intervention pacing therapies that are selected based on which detection algorithm, or both algorithms, indicate SRD. The priority of choice of algorithms is programmable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.