Implantable device with voltage delay test
US8024038B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2008 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Aug 14, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3835
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable medical device (IMD), such as a defibrillator, performs a capacitor reform or other temporary high current mode, such as to maintain efficacy of a battery or a high voltage defibrillation energy storage capacitor in spite of non-use. Before performing the capacitor reform or other high current mode, a voltage delay test can be performed. A voltage delay can be declared when an initial battery voltage measurement is less than a later battery voltage measurement during a loaded condition such as the charging of the capacitor. If a voltage delay is present, the capacitor reform or other temporary high current mode is enabled, otherwise, the capacitor reform or other temporary high current mode is inhibited. This saves energy, increasing the life of the IMD before explant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.