Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1990-04-20
1991-02-19
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604263, A61M 532
Patent
active
049940457
ABSTRACT:
A safety syringe including a conventional syringe, a locating ring and an elongate and tubular sleeve wherein the locating ring includes an outwardly extending projecting tab thereon which extends outwardly from the distal end of the syringe to engage an elongate slot having closed distal and proximal ends on the elongate sleeve to allow the sleeve to be movable between a retracted position wherein a needle on the syringe is exposed and a pair of extended positions wherein the needle is enclosed by the sleeve. The sleeve is releasably retained in one of the extended positions and irreversibly retained in the other extended position upon rotational movement of the projecting tab into one or the other of a pair of perpendicular slots on the sleeve.
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Allison Richard D.
Beck Andrew J.
Sherwood Medical Company
Smith Montgomery W.
Yasko John D.
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