System and method for estimating electrical conduction delays from immittance values measured using an implantable medical device
US9113789B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Dec 23, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2560/0223
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Techniques are provided for estimating electrical conduction delays with the heart of a patient based on measured immittance values. In one example, impedance or admittance values are measured within the heart of a patient by a pacemaker or other implantable medical device, then used by the device to estimate cardiac electrical conduction delays. A first set of predetermined conversion factors may be used to convert the measured immittance values into conduction delay values. In some examples, the device then uses the estimated conduction delay values to estimate LAP or other cardiac pressure values. A second set of predetermined conversion factors may be used to convert the estimated conduction delays into pressure values. Techniques are also described for adaptively adjusting pacing parameters based on estimated LAP.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.