Comparison of tissue injury between laparosonic coagulating shears and electrosurgical scissors in the sheep model.
OBJECTIVE
To compare laparosonic coagulating shears (LCS), which use ultrasonic energy, and unipolar diathermy scissors with respect to depth of tissue injury.


METHODS
Prospective observational study (Canadian Task Force classification I).


METHODS
A reproduced surgical setting.


METHODS
An anesthetized sheep.


METHODS
We laparoscopically harvested uterine horn and bowel tissue.


RESULTS
Tissue was transected while hemostasis was maintained. Two pathologists examined tissue independently, and each was blinded as to the instrument used for harvesting. Clinical characteristics and tissue injury created by the instruments were compared.


CONCLUSIONS
Subjectively, LCS appeared to produce less smoke plume than diathermy scissors. It also produced greater tissue damage than unipolar electrosurgery on settings of 35 W cut and 30 W coagulate.
Kwok
A
A
Department of Endosurgery, Women's Institute, University of Sydney, Australia.
Nevell
D
D
Ferrier
A
A
Graf
N
N
Lam
A
A
Ford
R
R
D000818:Animals; D004564:Electrocoagulation / Q000009:adverse effects / Q000295:instrumentation*; D005260:Female; D007422:Intestines / Q000473:pathology* / Q000601:surgery; D010535:Laparoscopy / Q000009:adverse effects*; D012756:Sheep; D013525:Surgical Instruments / Q000009:adverse effects*; D014599:Uterus / Q000473:pathology* / Q000601:surgery