Vessel sealing algorithm and modes
US10806506B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2016 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Oct 18, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/126
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method comprising sealing a vessel residing within tissue between jaws of forceps by sensing an amount of tissue held within the forceps, the sensing by passing electrical current through the tissue by way of the forceps. The method comprises heating the tissue using electrical current, the heating such that impedance of the tissue changes at a first predetermined rate, the first predetermined rate selected based on the sensing. The method comprises desiccating the tissue using electrical current, such that the impedance of the tissue changes at a second predetermined rate different than the first predetermined rate. The method comprises ceasing application of the electrical current to the tissue when impedance of the tissue reaches a predetermined value. Sensing the amount of tissue held within the forceps comprises varying electrical current flowing through the tissue through the forceps such that impedance of the tissue changes at a third predetermined rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.