Method and apparatus for simultaneously injecting a liquid and a

Details Method and apparatus for simultaneously injecting a liquid and a Method and apparatus for simultaneously injecting a liquid and a

1992-08-12

1994-02-22

Lewis, Ralph

Surgery

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

Treating material introduced into or removed from body...

604 59, 604218, A61M 500

Patent

active

052882918

ABSTRACT:
A method and apparatus is disclosed for simultaneously injecting medication or vaccination fluid into animal tissue and permanently placing an electronic transponder therein. An ejector is formed by a hub, which is adapted to be secured to the syringe, and from which a sharpened, hollow needle projects. Inside the needle is an elongated rod which extends into the syringe so that actuation of the syringe plunger to flow liquid through the needle forces the rod towards the sharp end of the needle. The transponder is disposed proximate the sharp end of the needle so that the rod mechanically forces the transponder with the liquid into the tissue. A sleeve which engages the rod is disposed inside an enlarged chamber defined by the hub and can move a limited extent only over the length of the rod so that the transponder can be forced into the tissue while the rod is prevented from falling out of the needle in either direction. An annular ring maintains the portion of the rod in the enlarged chamber of the hub substantially concentric with the hollow needle.

REFERENCES:
patent: 1325699 (1919-12-01), Osterhaus
patent: 3313301 (1967-04-01), Jefferts et al.
patent: 4086914 (1978-05-01), Moore
patent: 4464171 (1984-08-01), Garwin
patent: 4787384 (1988-11-01), Campbell et al.
patent: 4828547 (1989-05-01), Sahi et al.
patent: 4834704 (1989-05-01), Reinicke
patent: 4936827 (1990-06-01), Grimm et al.
patent: 4950234 (1990-08-01), Fujioka et al.

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