Methods for measuring tissue impedance and devices thereof
US9943245B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2014 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Aug 15, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7217
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for measuring an impedance of a tissue region inside a body of a patient. A first guidewire is advanced into a tissue region of a body of a patient, wherein the first guidewire comprises one or more electrodes electrically coupled to the tissue region. A second guidewire is advanced into the body, wherein the second guidewire comprises one or more electrodes electrically coupled to the tissue region of the body of the patient and spaced from the first guidewire. An error correction electrode is electrically coupled to the body. A voltage is applied across the first and the second guidewires. The impedance of the tissue region between the first and the second guidewires is measured while using an electrical pathway created by the error correction electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.