04984564 is referenced by 332 patents and cites 6 patents.

The present invention relates to a surgical retractor which comprises an inflatable sleeve that may be deflated, when not in use, so as to assume a precoiled position; and which may be inflated by air pressure, when in use, so as to define an uncoiled generally circular aperture.

Title
Surgical retractor device
Application Number
7/413266
Publication Number
4984564
Application Date
September 27, 1989
Publication Date
January 15, 1991
Inventor
Frank Yuen
110-20 71st Avenue, Forest Hills, 11375
NY, US
Agent
Collard Roe & Galgano
IPC
A61B 17/02
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