05176649 is referenced by 112 patents and cites 4 patents.

A flexible insertion device is provided for inserting an endoscope or endoscopic operating instrument through the body wall, typically the chest or abdominal wall. The insertion device comprises a collapsible rigid plastic or metal trocar inserter and a surrounding thin, plastic sheath with an adhesive collar. The insertion device enables the maintaining of air-tight sealing and permits the insertion of rigid, curved instruments without becoming dislodged from the body wall musculature. This eliminates the necessity of multiple puncture and insertion procedures which otherwise would cause additional tissue injuries.

Title
Insertion device for use with curved, rigid endoscopic instruments and the like
Application Number
7/646175
Publication Number
5176649
Application Date
January 28, 1991
Publication Date
January 5, 1993
Inventor
Akio Wakabayashi
2617 E. Chapman Ave., Orange, 92667
CA, US
Agent
Willie Krawitz
IPC
A61M 31/00
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