| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve an access for instruments and improve retention at the insertion into a body opening. <P>SOLUTION: A trocar sleeve includes a distal tubular section 2, a flare section 3 which is connected to the proximal end of the tubular section 2 and which is widened toward proximal side, and at least one screw 8 with a circular outer contour, helically arranged on a periphery of the tubular section 2. The tubular section 2 itself has a rounded polygonal cross section, so that maximal degrees of freedom of the inserted instruments 15 result. <P>COPYRIGHT: (C)2011,JPO&INPIT |
