Join
today

Boliven PRO is more than just patent search

  • Build and save lists using the powerful Lists feature
  • Analyze and download your search results
  • Share patent search results with your clients

Patents »

US4990148: Thin footplate rongeur

Share

Filing Information

Inventor(s) Worrick, III; Charles B. · John A. Santangelo ·
Assignee(s) Codman & Shurtleff, Inc. ·
Primary Examiner Robert A. Hafer ·
Assistant Examiner Lynda M. Cofsky ·
Application Number US7297141
Filing date 01/13/1989
Issue date 02/05/1991
Predicted expiration date 01/13/2009
U.S. Classifications 606/83  · 606/79  ·
International Classifications A61B 1716  ·
Kind CodeA
International Classifications 60653;79;83;169;170 ·
8 Claims, No Drawings


Abstract

A rongeur with special features applied to the footplate area to prevent the intersection of stress fields to allow the rongeur to be reduced in size and mass without materially reducing the strength of the rongeur. A transverse groove is used at the intersection of the anvil surface of the base plate and the shank base plane. Also the base of the footplate recess is offset from the shank base plane and the inside wall of the recess meets the recess base in a gentle curve. These features can be used individually or together to prevent the intersection of stress fields in the footplate area and thus allow the size of the footplate to be reduced without materially reducing the strength of the rongeur.

Independent Claims | See all claims (8)

  1. 1. In a rongeur comprising:an elongated shank having a perimeter, a distal end, a proximal end, a longitudinal axis and a base plane along at least a portion of said perimeter, said base plane extending in a direction generally parallel to said longitudinal axis;a footplate at the distal end of said shank extending generally transversely to the axis of said shank from said base plane and having a proximally facing anvil surface;an elongated crossbar adapted to reciprocate axially with respect to said shank and having a distal end and a proximal end;cutting means at the distal end of said crossbar aligned in confronting relationship to said footplate so that said footplate provides an anvil against which tissue may be cut;a recess in the surface of said footplate confronting said cutting means to provide a space to receive tissue during cutting;means operatively connecting said crossbar and said shank to permit said cutting means to reciprocate against said footplate to cut tissue;groove means on said base plane and on said anvil surface aligned generally transverse to said shank longitudinal axis and extending from said shank perimeter for separating the intersection of stress fields in said footplate and said shank when said rongeur is placed under stress during cutting.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US1040523 De Vilbiss Oct 1912
US3752161 MINNESOTA MINING & MFG Bent Aug 1973
US3835860 GARRETSON H Garretson Sep 1974
US4499899 Brimfield Precision, Inc. Lyons, III Feb 1985
US4586497 David J. Dapra Papra et al. May 1986
US4777948 WRIGHT DAVID W Wright Oct 1988

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
SU1053824KARAGANDIN NI VETERINARNAYA STNov 1983

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
EP0716578 Gary Karlin Michelson MICHELSON, Gary, Karlin May 2004
EP0790805 Gary Karlin MICHELSON Gary Karlin MICHELSON Jan 2005
US6200320 Gary Karlin Michelson Mar 2001
US5269797 Meditron Devices, Inc. Alfred O. Bonati et al. Dec 1993
US5439464 Shapiro Partners Limited David E. Shapiro Aug 1995
US5879365 United States Surgical Corporation Kenneth H. Whitfield et al. Mar 1999
US5766177 Oceaneering International, Inc. Rob G. Lucas-Dean et al. Jun 1998
US5314431 GRAZIANO THOMAS A Thomas A. Graziano May 1994
US5312407 CARTER L PHILIP Carter; L. Philip May 1994
US5873886 United States Surgical Corporation Scott W. Larsen et al. Feb 1999
US5484441 Tibor Koros et al. Jan 1996
US5597640 Signode Corporation Van Erden; Donald L. et al. Jan 1997
US5851214 United States Surgical Corporation Scott W. Larsen et al. Dec 1998
US5569283 United States Surgical Corporation David T. Green et al. Oct 1996
US6638280 Codman & Shurtleff, Inc. Victor B. Agbodoe Oct 2003
US6520979 Thierry Loubens et al. Feb 2003
US7297147 MICHELSON GARY KARLIN Gary Karlin Michelson Nov 2007
US6695849 Gary Karlin Michelson Gary Karlin Michelson Feb 2004
USD460553 Tibor Koros et al. Jul 2002
USD463859 Tibor Koros et al. Oct 2002
US7555343 Baxano, Inc. Jeffery L. Bleich Jun 2009
US7578819 Baxano, Inc. Jeffery L. Bleich et al. Aug 2009
US6575977 Gary Karlin Michelson Gary Karlin Michelson Jun 2003
US6685710 Codman & Shurtleff, Inc. Victor B. Agbodoe et al. Feb 2004
US7887538 Baxano, Inc. Jeffery L. Bleich et al. Feb 2011
US7641664 Warsaw Orthopedic, Inc. Paul J. Pagano Jan 2010
US7738969 Baxano, Inc. Jeffery L. Bleich Jun 2010
US7738968 Baxano, Inc. Jeffery L. Bleich Jun 2010
US7740631 Baxano, Inc. Jeffery L. Bleich et al. Jun 2010
US7749251 Aeolin, LLC Theodore G. Obenchain et al. Jul 2010
USD626649 Atlas Spine, Inc. Matthew G. Baynham Nov 2010
US7857813 Baxano, Inc. Gregory Schmitz et al. Dec 2010
US6991633 Codman & Shurtleff, Inc. Victor Bandford Agbodoe Jan 2006
US7011663 Gary Karlin Michelson Gary Karlin Michelson Mar 2006
US7553307 Baxano, Inc. Jeffery L. Bleich et al. Jun 2009
US7918849 Baxano, Inc. Jeffery L. Bleich et al. Apr 2011
US7922723 Gary Karlin Michelson Gary Karlin Michelson Apr 2011
US7931689 Spineology Inc. Stephen Hochschuler et al. Apr 2011
US7938830 Baxano, Inc. Vahid Saadat et al. May 2011
US7959577 Baxano, Inc. Gregory P. Schmitz et al. Jun 2011
US7963915 Baxano, Inc. Jeffery L. Bleich Jun 2011
US8048080 Baxano, Inc. Jeffery L. Bleich et al. Nov 2011
US8034088 Warsaw Orthopedic, Inc. Paul J. Pagano Oct 2011
US8062300 Baxano, Inc. Gregory P. Schmitz et al. Nov 2011
US8062298 Baxano, Inc. Gregory P. Schmitz et al. Nov 2011
US8092456 Baxano, Inc. Jeffery L. Bleich et al. Jan 2012
US8241290 Gary Karlin Michelson Aug 2012
US8221397 Baxano, Inc. Jeffery L. Bleich et al. Jul 2012
US8192435 Baxano, Inc. Jeffery L. Bleich et al. Jun 2012
US8192436 Baxano, Inc. Gregory P. Schmitz et al. Jun 2012
US8262664 Zimmer, Inc. Daniel F. Justin et al. Sep 2012
US8257356 Baxano, Inc. Jeffrey L. Bleich et al. Sep 2012
US8303516 Baxano, Inc. Gregory P. Schmitz et al. Nov 2012
US8398641 --
US8409206 --
US8394102 --
US8366712 --
US8419653 --
US8430881 --
US8562683 --
US8568416 --
US8551097 --
US8585704 --
US8613745 --
US8617163 --
US8579902 --
US8647346 --
US8663228 --
US8652138 --
US8657823 --