Combination ultrasonic and electrosurgical instrument with clamp arm position input and method for identifying tissue state
US11229473B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 1, 2018 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Nov 25, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/064
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ultrasonic surgical instrument and method for identifying tissue state and energizing the surgical instrument includes an end effector having an ultrasonic blade and an RF electrode, a shaft assembly, a body, and a power controller. A first ultrasonic energy input is configured to be actuated from a first unactuated energy input state to a first actuated energy input state. A trigger input is configured to be actuated from an unactuated trigger input state to an actuated trigger input state. The power controller is operatively connected to the ultrasonic blade, the RF electrode, the first ultrasonic energy input, and the trigger input and configured to direct at least one of the ultrasonic blade or the RF electrode to be selectively driven according to a predetermined drive function based on the tissue impedance, the state of the first energy input, and the state of the trigger input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.