Optimization of impedance signals for closed loop programming of cardiac resynchronization therapy devices
US7010347B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 2004 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Jun 4, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36843
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
What are described herein are implantable cardiac devices such as pacemakers and defibrillators that deliver cardiac resynchronization therapy (CRT), and to a method of optimizing acquisition of impedance signals between electrodes present on implanted lead systems. This system then automatically determines which electrodes or electrode combinations acquire impedance waveforms that have the best signal to noise ratio (highest fidelity) and characterize data most representative of dysynchronous electro-mechanical events. Using closed loop algorithms which provide electrograms and a variety of impedance data reflective of the patient's clinical status, the system autonomously modifies interval timing within the CRT device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.