Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1986-02-14
1987-04-07
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
A61M 532
Patent
active
046557512
ABSTRACT:
The liquid dispensing and receiving syringe includes an elongated preferably cylindrical transparent container open at its front and rear ends and defining a central cavity for holding liquid. A rearwardly extending plunger is slideably secured in the rear end of the cavity for dispensing liquid out the front end of the container and through a hollow needle or nozzle secured to the container front end and for sucking liquid into the cavity from the needle. A concentric protective shell is connected to and spaced outwardly from the container sidewall and is slideable between a first needle-expository position and a second needle-covering position. The shell has windows and/or a grid to permit viewing of the container. A number of spacer ears spaced on the container's outer surface and/or the shell's inner surface may temporarily or permanently lock in mating pockets and/or frictionally slide in longitudinal grooves in the container outer surface. The shell may be resilient and flexible to allow temporary distortion thereof to move the ears in and out of the pockets and/or to permit breaking of the needle to disable it. The container sidewalls may include transverse scorelines to permit easy breaking of the container to prevent its reuse. The syringe is compact, disposable, inexpensive and offers improved safety.
REFERENCES:
patent: 2571653 (1951-10-01), Bastien
patent: 2888924 (1959-06-01), Dunmire
patent: 3487834 (1970-01-01), Smith, Jr. et al.
patent: 4356822 (1982-11-01), Winstead-Hall
Posta Jr. John J.
Yasko John D.
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