Projectile syringe for blowpipe

Details Projectile syringe for blowpipe Projectile syringe for blowpipe

1987-03-30

1988-04-05

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604272, A61M 520

Patent

active

047356111

ABSTRACT:
An improved, projectible syringe is provided for the introduction of a fluid medicament or the like into an animal from a position remote from the animal. The syringe assembly includes a tubular syringe body having an internal, axially shiftable plunger and an elongated rod coupled with the latter; the plunger rod is used to withdraw the plunger and fill the syringe body with an injectible fluid. Structure is also provided for creating a biasing force against the plunger urging the same forwardly for injection purposes, along with apparatus for selectively restraining such forward plunger movement until the syringe assembly is used. In practice, a specialized injection needle having a transverse fluid outlet is provided, together with a shiftable fluid flow-blocking needle sleeve. When the syringe assembly is projected towards and through an animal's skin, the blocking sleeve is shifted, thereby exposing the needle aperture. The biasing force acting against the syringe plunger thereupon moves the plunger forwardly, injecting the fluid substance into the animal.

REFERENCES:
patent: 3114370 (1963-12-01), Kayler
patent: 4243036 (1981-01-01), Ott
patent: 4537593 (1985-08-01), Alchas
patent: 4643712 (1987-02-01), Kulik et al.

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