Feedback control in an ultrasonic surgical instrument for improved tissue effects
US6454781B1 · kind B1 · utility
2,132Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 2000 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | May 18, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/320095
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A temperature or impedance sensing device monitors the tissue temperature or impedance 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 sensors are located at the end-effector, preferably on a clamping member. The signals from the sensors provide feedback to control circuitry and a device for selecting a function of the instrument for either cutting mode or coagulating mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.