Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1995-06-02
1996-08-06
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604232, A61M 500
Patent
active
055429343
ABSTRACT:
A hypodermic syringe designed to simultaneously dispense anesthetic liquid from a plurality of carpules. In a preferred embodiment, the syringe comprises a body which includes a pair of parallel, open-ended, generally cylindrical members and a base member. The cylindrical members are partially inserted into and fixedly secured within the base member. Each cylindrical member is shaped to include an elongated chamber adapted to removably receive therewithin an anesthetic liquid-containing carpule. The base member is externally-shaped to define a finger-gripping handle. The syringe also includes a fluid mixing chamber for receiving fluid drawn from each of the carpules through a corresponding fluid transport assembly mounted within the open top end of the respective cylindrical member, the fluid mixing chamber being formed by the mating engagement of an externally-threaded disk and an internally-threaded cap. The disk has a pair of openings into which the respective top ends of the cylindrical members are partially inserted. The cap is provided with a threaded boss over which a hypodermic needle assembly may be removably mounted, the hypodermic needle being used to deliver the fluid from the fluid mixing chamber to a patient. The syringe further includes a plunger for emptying the entire contents of both carpules into the fluid mixing chamber at the same time in a single plunger stroke.
REFERENCES:
patent: 3767085 (1973-10-01), Cannon et al.
patent: 4333457 (1982-06-01), Margulies
patent: 4710178 (1987-12-01), Leonard et al.
patent: 5137528 (1992-08-01), Crose
patent: 5314412 (1994-05-01), Rex
Dingman Brian M.
Yasko John D.
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