Journal article
The interaction between electrosurgical generators, endoscopic electrodes, and tissue
Gastrointestinal endoscopy, Vol.38(2), pp.118-122
1992
DOI: 10.1016/S0016-5107(92)70374-5
PMID: 1568605
Abstract
Endoscopic monopolar and bipolar devices were compared during cutting and coagulation. It was observed on appropriate animal models that the initial resistance (impedance) values recorded correspond to the normal tissue impedance at the electrode. The subsequent impedance values increase 25 to 50
ohms for the coagulator which relates to tissue desiccation and for the cutting electrodes the impedance increases greater than 1000
ohms during the arcing process. At similar power settings, typical monopolar generators produce maximum power at 300 to 500
ohms while typical bipolar generators produce maximum power at 25 to 100
ohms. With impedances greater than 1000
ohms, monopolar generators are capable of higher power output than are bipolar generators. Since cutting is a high impedance process, bipolar cutting electrodes do not perform as intended with typical bipolar generators. Therefore, bipolar cutting electrodes should be employed with a monopolar generator or a generator designed specifically for their use.
Details
- Title: Subtitle
- The interaction between electrosurgical generators, endoscopic electrodes, and tissue
- Creators
- Robert D TuckerChester E SievertEugene V KramolowskyJ.A VennesStephen E Silvis
- Resource Type
- Journal article
- Publication Details
- Gastrointestinal endoscopy, Vol.38(2), pp.118-122
- Publisher
- Mosby, Inc
- DOI
- 10.1016/S0016-5107(92)70374-5
- PMID
- 1568605
- ISSN
- 0016-5107
- eISSN
- 1097-6779
- Language
- English
- Date published
- 1992
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Pathology
- Record Identifier
- 9984047745202771
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