Instrument for the coagulation and dissection of biological tissue and method for operating such an instrument
US11648050B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 15, 2019 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Jul 24, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1457
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An instrument for coagulation and dissection of biological tissue including a tool with coagulation electrodes and at least one cutting electrode. The electrodes are actuated via an operating circuit including an evaluation circuit, to which an external apparatus delivers an evaluation signal with first and second half-waves having opposite polarities. During at least one first half-wave, the evaluation circuit checks whether a first switch or a second switch are actuated on the instrument. Depending on the evaluation result, a triggering signal is transmitted to a switching unit. Depending on the triggering signal, the switching unit is switched into a first or second switching state. In the second switching state, no voltage suitable for dissection and no current suitable for dissection, respectively, is applied to the cutting electrode. In the first switching state, a voltage suitable for dissection or a current suitable for dissection is applied to the cutting electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.