Electrosurgical instrument
US12011219B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2019 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Apr 4, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1861
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrode structure for a distal tip of an electrosurgical instrument that enables efficient delivery of radiofrequency (RF) energy in a forward (distal) direction and uniform delivery of microwave energy for ablation in a region surrounding the distal tip. The instrument comprises a tip body having a first electrode and a second electrode, where the second electrode is spaced from the first electrode exposed dielectric material. The first electrode is connected through the tip body to an inner conductor of a coaxial feed. The second electrode is electrically connected to the outer conductor of the coaxial feed by a field-shaping conductive structure formed in or on the tip body. The field-shaping conductive structure is configured to shape a radiation profile of microwave energy emitted from the tip body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.