1
Steven R Bacich, John P Greelis, Hien Nguyen, Tuoc Nguyen: Method and apparatus for performing biopsy. Imagyn Medical, Knobbe Martens Olson & Bear, May 12, 1998: US05749889 (457 worldwide citation)

A surgical access device and method are provided for endoscopic surgeries comprising biopsies or other surgical cutting procedures. The device generally comprises a substantially rigid first channel associated with a first port and a second channel associated with a second port of a proximal housing ...


2
Steven R Bacich, John P Greelis, Hien Nguyen, Tuoc Nguyen: Method and apparatus for performing laparoscopy. Imagyn Medical, Knobbe Martens Olson & Bear, September 22, 1998: US05810776 (155 worldwide citation)

A laparoscopic introducer and method of use comprise a laparoscopic channel and a guide channel for a secondary instrument. Upon initial insertion of the introducer, the guide channel closely conforms to the body of the introducer so as to only negligibly increase the cross-sectional profile thereof ...


3
Steven R Bacich, John P Greelis, Hien Nguyen, Tuoc Nguyen: Surgical access device and method of constructing same. Imagyn Medical, Knobbe Martens Olson & Bear, June 30, 1998: US05772628 (36 worldwide citation)

A surgical access device comprises an introducer with a main endoscopic channel and an auxiliary or secondary instrument channel. The introducer exhibits an extremely narrow cross-sectional profile in order to minimize the size of the portal or other entry point necessary to gain access into the pat ...