Circuit for controlling arc energy from an electrosurgical generator
US8523855B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2010 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Jun 18, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1213
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A circuit is disclosed which minimizes the amount of tissue vaporized during a first half (positive half cycle) of an electrosurgical current cycle and minimizes the amount of current applied to tissue during a second half (negative half cycle) of the electrosurgical current cycle to control thermal spread. The circuit is preferably provided within an electrosurgical generator which is capable of controlling the amount of energy delivered to a patient during electrosurgery on a per arc basis. Also, a method of controlling arc energy via the circuit is disclosed. The method includes the steps of generating a current via a generating unit and dividing the current into two paths via a diode-resistor block, one path including one of a resistor and a potentiometer in series with a pair of electrical components, wherein arc energy variations produced by the generating unit are controlled by the diode-resistor block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.