Dual-function plasma and non-ionising microwave coagulating electrosurgical instrument and electrosurgical apparatus incorporating the same
US10342595B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2014 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Jul 18, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1861
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrosurgical device that is capable of both generating a plasma to perform surface coagulation and emitting a non-ionizing microwave field (in the absence of plasma) to perform coagulation at a deeper level. The device comprises a probe tip that is connected to receive radiofrequency (RF) and/or microwave frequency energy from a generator, and also defines a flow path for a gas. The probe tip is adjustable between a first configuration, in which it defines a bipolar (e.g. coaxial) structure to produce a high electric field from the received RF and/or microwave frequency energy across the flow path for the gas to strike and sustain plasma and a second configuration, in which it defines an antenna structure to emit non-ionizing microwave energy into tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.