Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1994-03-02
1995-05-09
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604212, 604110, A61M 500
Patent
active
054135648
ABSTRACT:
A hypodermic syringe system for injecting a predetermined dosage of therapeutic fluid into body tissue of a living patient. A sealed capsule contains the fluid to be injected. A double ended hypodermic needle includes a first sharpened end for piercing engagement with the body tissue and a second sharpened end opposite therefrom for piercing engagement with the capsule. The capsule is disposed between the end of a plunger which is slidably engaged within a barrel member supporting the needle and the end wall of the barrel member. Advancement of the plunger moves the capsule into piercing engagement with the second sharpened end of the needle, collapsing the capsule and discharging the therapeutic fluid through the needle and into the body tissue. A safety syringe with a retractable needle is disclosed. The system is also provided with an aspirating capability to inform the user whether or not a blood vessel has been pierced by the needle.
REFERENCES:
patent: 1738146 (1929-12-01), Kulik
patent: 4236516 (1980-12-01), Nilson
patent: 4392491 (1983-07-01), Takasugi et al.
patent: 5019046 (1991-05-01), Kohler
patent: 5026346 (1991-06-01), Spanner et al.
Silver Jules
Ziegler Louis C.
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