Helical antenna structure
US11799206B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2017 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | Feb 2, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1892
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A helical antenna structure for use in an electrosurgical instrument. The helical antenna structure is connectable to inner and outer conductors of a coaxial transmission line, and can act as both a radiating antenna or applicator structure, and also in a mode where an electric field is generated between its electrodes. In this way, the helical antenna structure may be used both for argon plasma coagulation, and deep tissue coagulation, as well as providing means for delivering a fluid, e.g. a therapeutic fluid such as adrenaline. This may be achieved through the use of helically arranged electrodes and a channel for gas to flow. This device is also used to deliver adrenaline and RF/microwave energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.