US005226890A
United States Patent [19] [ii] Patent Number: 5,226,890
Ianniruberto et al. [45] Date of Patent: Jul. 13,1993
[54] TISSUE GRIPPING DEVICE
[75] Inventors: Alex Ianniruberto, Waterbury, Conn.; Michael Ciccolella, Lake Carmel, N.Y.
[73] Assignee: United States Surgical Corporation,
Norwalk, Conn.
[21] Appl. No.: 792,028
[22] Filed: Nov. 13,1991
[51] Int. CI.' A61M5/32
[52] U.S. Q 604/164; 604/174;
604/178
[58] Field of Search 604/164, 165, 171, 174,
604/175, 178, 264, 272
[56] References Cited
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OTHER PUBLICATIONS
Enopath Brochure of Ethicon, Inc. 1988 Orthopaedics Richards Annual Product Catalog. Bone Screw Technical Information Brochure of Richards Manufacturing Company, Inc. Auto Suture Surgigrip TM Brochure of United States Surgical Corporation.
"A Modified Instrument and Method for Laparoscopy"; Communications in brief, 1971 886-887.
Primary Examiner—John G. Weiss
Attorney, Agent, or Firm—Thomas R. Bremer; Peter G.
Dilworth; Rocco S. Barrese
[57] ABSTRACT
An apparatus for maintaining a positional relationship between a trocar cannula and body tissue into which the cannula is inserted includes a tissue engaging member having a conical outer surface with a thread helically disposed thereon. A guide tube is insertable into a bore in the tissue engaging member, the guide tube having a camming surface. A collet with flexible projections is engageable with the guide tube. When the collet is tightened onto the guide tube the flexible projections bend inward to frictionally engage and hold a trocar cannula inserted through the axial bore of the apparatus.
21 Claims, 4 Drawing Sheets
