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Tissue actions of bipolar scissors compared with monopolar devices
1Department of Obstetrics and Gynecology, Good Samaritan Hospital, Cincinnati, Ohio 45220.
Fertility and Sterility
|February 1, 1995
Summary
Bipolar scissors provide surgeons with improved safety and comparable or superior performance to monopolar scissors. These findings are crucial for laparoscopic surgery, highlighting reduced thermal injury with bipolar instruments.
Area of Science:
- Surgical Technology
- Minimally Invasive Surgery
- Electrosurgery
Background:
- Monopolar scissors are widely used in surgery but can cause significant thermal injury.
- Bipolar scissors offer a potentially safer alternative by confining current flow.
- Electrosurgical generator settings can influence instrument performance and tissue damage.
Purpose of the Study:
- To compare the cutting performance of bipolar versus monopolar scissors.
- To evaluate and compare the extent of thermal coagulation injury caused by both types of scissors.
- To assess the impact of different electrosurgical generator settings on performance and injury.
Main Methods:
- The study utilized eighteen female rabbit uterine horns for testing.
- Cutting was performed at controlled velocities and various wattages using both bipolar and monopolar scissors.
- Microscopic examination and measurement of thermal necrosis zones were conducted.
Main Results:
- Bipolar scissors demonstrated equivalent cutting performance to monopolar scissors.
- Significantly less thermal injury was observed with bipolar scissors compared to monopolar.
- Both scissor types performed better when connected to a constant voltage generator.
Conclusions:
- Bipolar scissors present significant safety advantages for surgeons.
- Performance of bipolar scissors is equivalent or superior to monopolar scissors.
- Bipolar scissors are recommended for laparoscopic surgery due to enhanced safety and efficacy.