Operating trocar

Abstract

An operating trocar according to the invention includes a guide tube inserted through a body surface to introduce an endoscope and an operating instrument into a living body, and a flange portion provided on the guide tube to make a predetermined angle with a plane approximately perpendicular to an axial direction of the guide tube, the flange portion being fixed to an outer surface of the body surface. Preferably, the operating trocar also includes a gastightness retaining portion provided in the guide tube to retain gastightness between a circumferential surface of an internal hole of the guide tube and a medical instrument such as an endoscope and an operating instrument inserted in the internal hole of the guide tube.

1 - 37 . (canceled)  
   
   
       38 . A method of inserting a trocar into a living body, comprising the steps of: 
 inserting at least a portion of the trocar into the living body;    causing at least a portion of a flange of the trocar and an outer surface of the living body to adhere to each other; and    adhering an adhesive sheet having at least a portion wider in area than the flange to the flange as well as the outer surface of the living body to fix the trocar to the living body.    
   
   
       39 . A method of inserting a trocar into a living body, comprising the steps of: 
 inserting at least a portion of the trocar into the living body; and    fixing the trocar to the living body by securing a band extending from the trocar around a portion of the living body.