Radiofrequency energy antenna coupling to common laparoscopic instruments: practical implications.

Surgical Endoscopy
Edward L JonesGreg V Stiegmann

Abstract

Electromagnetic coupling can occur between the monopolar "Bovie" instrument and other laparoscopic instruments without direct contact by a phenomenon termed antenna coupling. The purpose of this study was to determine if, and to what extent, radiofrequency energy couples to other common laparoscopic instruments and to describe practical steps that can minimize the magnitude of antenna coupling. In a laparoscopic simulator, monopolar radiofrequency energy was delivered to an L-hook. The tips of standard, nonelectrical laparoscopic instruments (either an unlit 10 mm telescope or a 5 mm grasper) were placed adjacent to bovine liver tissue and were never in contact with the active electrode. Thermal imaging quantified the change in tissue temperature nearest the tip of the telescope or grasper at the end of a 5 s activation of the active electrode. A 5 s activation (30 watts, coagulation mode, 4 cm separation between instruments) increased tissue temperature compared with baseline adjacent to the grasper tip (2.2 ± 2.2 °C; p = 0.013) and telescope tip (38.2 ± 8.0 °C; p < 0.001). The laparoscopic telescope tip increased tissue temperature more than the laparoscopic grasper tip (p < 0.001). Lowering the generator power from 30 to 15 ...Continue Reading

References

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Citations

Dec 3, 2014·American Journal of Surgery·Alessandro PanicciaThomas N Robinson
Aug 5, 2014·Journal of the American College of Surgeons·Thomas N RobinsonMarc A Rozner
Dec 1, 2015·Current Problems in Surgery·Daniel B JonesStephanie B Jones
Jul 16, 2015·Surgical Endoscopy·Nicole T TownsendThomas N Robinson
Sep 30, 2020·AORN Journal·Emily Jones, Amber Wood
Feb 17, 2017·Surgical Endoscopy·Edward L JonesThomas N Robinson
Sep 30, 2017·Bioelectromagnetics·Satheesh Bojja-VenkatakrishnanAsimina Kiourti
Jun 28, 2020·Surgical Endoscopy·Krzysztof J WikielEdward L Jones
May 10, 2020·Surgical Endoscopy·Douglas M OverbeyEdward L Jones
Mar 21, 2015·Surgical Laparoscopy, Endoscopy & Percutaneous Techniques·Nicole T TownsendThomas N Robinson

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