Ultrasonic surgical instruments and methods for sealing and/or cutting tissue
US11123094B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2018 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Jan 18, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/064
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ultrasonic surgical system includes an ultrasonic generator configured to output a drive signal, an ultrasonic transducer configured to receive the drive signal and output mechanical motion, a waveguide configured to transmit the mechanical motion to a blade disposed at a distal end portion thereof, a sensor, and a controller. The blade is configured to oscillate in response to receipt of the mechanical motion and defines a displacement when oscillating. The sensor is configured to sense a property indicative of tension on tissue and the controller is configured to adjust the drive signal to thereby adjust the displacement based upon the sensed property. A method of treating tissue includes applying a drive signal to an ultrasonic transducer to oscillate an ultrasonic blade, sensing a property indicative of a tension on the tissue, and adjusting the drive signal based upon the sensed property to thereby adjust the displacement of the blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.