Safety syringe

- Sherwood Medical Company
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Description

FIG. 1 is a perspective view of a safety syringe, showing our new design, with the shield portion in the retracted position;

FIG. 2 is a side elevational view thereof;

FIG. 3 is an end elevational view thereof, taken from the left of FIG. 2;

FIG. 4 is a side elevational view thereof, with the needle sheath removed;

FIG. 5 is an end elevational view thereof, taken from the left of FIG. 4;

FIG. 6 is a side elevational view thereof, with the shield in the extended position;

FIG. 7 is a perspective view thereof, with the shield in the extended position; and

FIG. 8 is an end elevational view thereof, taken from the right of FIG. 2.

Referenced Cited
U.S. Patent Documents
2571653 October 1951 Bastien
3253592 May 1966 Pechmann
4356822 November 2, 1982 Winstead-Hall
4425120 January 10, 1984 Sampson et al.
4573976 March 4, 1986 Sampson et al.
4631057 December 23, 1986 Mitchell
4655751 April 7, 1987 Harbaugh
4666435 May 19, 1987 Braginetz
4681567 July 21, 1987 Masters et al.
4693708 September 15, 1987 Wanderer et al.
4723943 February 9, 1988 Spencer
4737144 April 12, 1988 Choksi
4737149 April 12, 1988 Gillilan
4743233 May 10, 1988 Schneider
4747837 May 31, 1988 Hauck
4842587 June 27, 1989 Poncy
4874383 October 17, 1989 McNaughton
Patent History
Patent number: D313470
Type: Grant
Filed: Oct 16, 1989
Date of Patent: Jan 1, 1991
Assignee: Sherwood Medical Company (St. Louis, MO)
Inventors: Daniel A. Talonn (University City, MO), Alan B. Ranford (Creve Coeur, MO)
Primary Examiner: A. Hugo Word
Assistant Examiner: Stella M. Reid
Attorneys: Andrew J. Beck, Montgomery W. Smith, Richard D. Allison
Application Number: 7/422,374
Classifications
Current U.S. Class: D24/24