Aspirating plunger for power injector cartridges

- Sterling Winthrop, Inc.
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Description

FIG. 1 is a perspective view of a aspirating plunger for power injector cartridges incorporating the design;

FIG. 2 is a side elevational view of the design of FIG. 1, the left side and the right side elevation having the same appearance;

FIG. 3 is a top plan view of the design of FIG. 1; and,

FIG. 4 is a bottom plan view of the design of FIG. 1.

Referenced Cited
U.S. Patent Documents
RE32974 July 4, 1989 Porat et al.
D203730 February 1966 Coanda
D205269 July 1966 Gray
D253720 December 18, 1979 Millet
1222424 April 1917 Laurent
1707880 April 1929 Sheets
3669111 June 1972 Dubner
3705582 December 1972 Stumpf et al.
3766918 October 1973 Kessel
3834387 September 1974 Brown
4011868 March 15, 1977 Friend
4216771 August 12, 1980 Arlers et al.
4299238 November 10, 1981 Baidwan et al.
4333457 June 8, 1982 Margulies
4660569 April 28, 1987 Etherington
Patent History
Patent number: D364461
Type: Grant
Filed: Jul 21, 1993
Date of Patent: Nov 21, 1995
Assignee: Sterling Winthrop, Inc. (New York, NY)
Inventors: Richard T. Liebert (Ballston Spa, NY), Neil H. Brown (Royersford, PA)
Primary Examiner: Stella Reid
Law Firm: Fish & Richardson
Application Number: 0/12,603
Classifications
Current U.S. Class: Syringe, Catheter Or Needle Component (22) (D24/130)