Apparatus and methods for automatic adjustment of AV interval to ensure delivery of cardiac resynchronization therapy
US8428716B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2009 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Jul 17, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3684
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of left ventricular pacing including automated adjustment of a atrio-ventricular (AV) pacing delay interval and intrinsic AV nodal conduction testing. It includes—upon expiration or reset of a programmable AV Evaluation Interval (AVEI)—performing the following: temporarily increasing a paced AV interval and a sensed AV interval and testing for adequate AV conduction and measuring an intrinsic atrio-ventricular (PR) interval for a right ventricular (RV) chamber. In the event that the AV conduction test reveals an AV conduction block condition then a pacing mode-switch to a bi-ventricular (Bi-V) pacing mode occurs and the magnitude of the AVEI is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.