Syringe

Details Syringe Syringe

1982-11-22

1983-10-25

Yasko, John D.

Surgery

Truss

Pad

A61B 514

Patent

active

044112750

ABSTRACT:
Improved disposable syringe for taking arterial blood samples for blood gas testing and for administering epidural anaesthesia, wherein the syringe plunger has a compressible elastomeric tip member which has a peripheral annular wiper extending axially forwardly toward the syringe floor and radially outwardly at an acute angle to the longitudinal center line of the barrel and plunger to form an excellent seal with the inner surface of the syringe barrel while at the same time providing only a gentle pressure against such surface and hence an exceptionally low resistance to axial movement of the tip member and plunger.

REFERENCES:
patent: 1165686 (1915-12-01), McElroy
patent: 1948982 (1934-02-01), Cutter
patent: 2419401 (1946-02-01), Hinds
patent: 3147753 (1964-09-01), Nogier et al.
patent: 3890956 (1975-06-01), Moorehead
patent: 3930492 (1976-01-01), Hatsuno
patent: 4041934 (1977-08-01), Genese
patent: 4372325 (1983-02-01), Raitto

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