Impedance measurement in implanted device
US7233825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2003 |
| Grant date | Jun 19, 2007 |
| Priority date | — |
| Expiry date | Mar 21, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3718
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In an implantable medical device having an electrical lead coupled to tissue of a user and a circuit for measuring the impedance of the lead, a method and apparatus for responding to impedance variations in the lead which includes measuring the impedance of the lead while monitoring physiologic parameters of the user, detecting the presence or absence of electromagnetic interference, and if the impedance of the lead is out-of-range, determining whether the electromagnetic interference exceeds a predetermined value, and if the electromagnetic interference exceeds a predetermined value, administering a therapy to the tissue of the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.