Abstract
ABSTRACT
To work with ease and comfort in laparoscopic cholecystectomy, four instruments (Tohoku dissector, Tohoku forceps, short mantis device, and long mantis device) have been developed that can be used by any surgeon, even one not accustomed to this new procedure. These instruments have the advantage of offering a feel of open surgery and have been in use since February 1991 with significant comfort and safety.
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