Feedback control in an ultrasonic surgical instrument for improved tissue effects
US7108695B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2002 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Mar 12, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/320095
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A temperature monitoring device and/or method which control the tissue temperature at the end-effector of a therapeutic ultrasonic cutting and coagulating instrument as the tissue is being heated with ultrasonic vibrations from the end-effector. One or more temperature sensors are located at the end-effector, preferably on a clamping member. The temperature sensors measure the temperature of the tissue engaged by the end-effector either directly or indirectly. An alternate method and apparatus provides an electrical tissue impedance measure in combination with an ultrasonic cutting and coagulating instrument to provide active feedback control of an ultrasonic generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.