Patent ID: 9597115
Date: 2017-03-21
CPC Classifications: A61B

Claim:
1. A ring sealing apparatus for a trocar, comprising a guiding mechanism and a sealing ring, wherein the guiding mechanism comprises a positioning groove for mounting the sealing ring and four guiding blocks including two guiding blocks of a large guiding surface forming a pair of primary guiding sliders and two guiding blocks of a small guiding surface forming a pair of auxiliary guiding sliders, wherein the primary guide sliders and the auxiliary guiding sliders have different colors; the four guiding blocks form a rotary structure having a large upper part, a small middle part and a large lower part; and the positioning groove is disposed at the small middle part of the guiding block; the sealing ring is made of an elastic medical macromolecular material, and has a surgical instrument through hole; and the sealing ring is mounted in the positioning groove.