Trocar

Description

FIG. 1 is a perspective view of a trocar showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a back view thereof; and,

FIG. 7 is a front view thereof.

Referenced Cited
U.S. Patent Documents
1527291 February 1925 Zorraquin
2001638 May 1935 Tornsjo
2623521 December 1952 Shaw
2630803 March 1953 Baran
3713447 January 1973 Adair
3774604 November 1973 Danielsson
3789852 February 1974 Kim et al.
4168699 September 25, 1979 Hauser
4177814 December 11, 1979 Knepshield et al.
4190048 February 26, 1980 Sampson
4403617 September 13, 1983 Tretinyak
4431426 February 14, 1984 Groshong et al.
4535773 August 20, 1985 Yoon
4601710 July 22, 1986 Moll
4617929 October 21, 1986 Gill
4617933 October 21, 1986 Hasson
4654030 March 31, 1987 Moll et al.
4747831 May 31, 1988 Kulli
4808168 February 28, 1989 Warring
4813426 March 21, 1989 Haber et al.
4902280 February 20, 1990 Lander
4906236 March 6, 1990 Alberts et al.
4922602 May 8, 1990 Mehl
4931042 June 5, 1990 Holmes et al.
4952207 August 28, 1990 Lemieux
4955870 September 11, 1990 Ridderheim et al.
5030206 July 9, 1991 Lander
5057082 October 15, 1991 Burchette, Jr.
5066288 November 19, 1991 Deniega et al.
5104382 April 14, 1992 Bringerhoff et al.
5114407 May 19, 1992 Burbank
5116353 May 26, 1992 Green
5152754 October 6, 1992 Plyley et al.
5158552 October 27, 1992 Borgia et al.
5226891 July 13, 1993 Bushatz et al.
5246425 September 21, 1993 Hunsberger et al.
5256149 October 26, 1993 Banik et al.
5290243 March 1, 1994 Chodorow et al.
5290304 March 1, 1994 Storace
5295993 March 22, 1994 Green
Foreign Patent Documents
0135364 March 1985 EPX
0265193 April 1988 EPX
0479130 April 1992 EPX
0494520 July 1992 EPX
921554 April 1982 SUX
Other references
  • "The Source of Laparoscopic Innovation", by Origin Medsystems, Inc., four (4) pages, 1992.
Patent History
Patent number: D349574
Type: Grant
Filed: Oct 9, 1992
Date of Patent: Aug 9, 1994
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Inventors: Gerald L. Metcalf (Burnsville, MN), Alan K. Plyley (Santa Barbara, CA), John M. Barker (Ventura, CA)
Primary Examiner: A. Hugo Word
Assistant Examiner: I. Simmons
Attorneys: Gary L. Griswold, Walter N. Kirn, Jeffrey J. Hohenshell
Application Number: 0/350