Polyphase electrosurgical system and method
US9700366B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 2008 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Feb 1, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/143
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A polyphase electrosurgical system and method are provided. In embodiments, a radiofrequency generator having the capability of delivering a plurality of independent electrosurgical signals is disclosed. An electrosurgical instrument having an array of electrodes that correspond to the plurality of signals may be used to deliver the electrosurgical signals to tissue. In embodiments, three RF signals having a phase offset of about 120° therebetween, i.e., a three-phase configuration, may be used to achieve a balanced delivery of electrosurgical energy, which may lead to increased rates of energy delivery, improved control of tissue ablation regions, and improved operative outcomes. The phase, amplitude, and/or frequency of each signal may be independently variable in response to user inputs and/or biological parameters such as tissue impedance or return electrode current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.