06206826 is referenced by 311 patents and cites 35 patents.

A percutaneous surgical system includes a plurality of tissue retractors configured to maintain a working space within soft tissue. The tissue retractors include a prong on their inner surfaces for engaging a ring member. The ring member maintains the position of the tissue retractors while also defining a number of channels inside the ring member. In one embodiment, the ring member includes concentric inner and outer walls connected by support walls. The inner wall defines an inner bore for supporting a working channel sleeve for the introduction of working instruments. A plurality of outer channels are defined between the inner, outer and support walls for the introduction of ancillary instruments to the surgical site. A manipulation tool is also provided that engages each tissue retractor for positioning the retractor within the patient.

Title
Devices and methods for percutaneous surgery
Application Number
9/336191
Publication Number
6206826 (B1)
Application Date
June 18, 1999
Publication Date
March 27, 2001
Inventor
Mingyan Liu
Bourg-la-Reine
US
Eddie Ray III
Cordova
TN, US
Bradley T Estes
Memphis
TN, US
Hallett Mathews
Richmond
VA, US
Agent
Woodard Emhardt Naughton Moriarty & McNett
US
Assignee
SDGI Holdings
DE, US
IPC
A61B 17/02
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