Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1999-07-26
2000-06-27
Yasko, John B.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604192, 604263, A61M 532
Patent
active
060801352
ABSTRACT:
A protection system applicable to hypodermic needles, which may be activated automatically, destined to cover the complete length of the needle once used in administering a drug, to prevent accidental jabbing, the system involving one or more individual protection components, concentrically arranged to each other and to the syringe nozzle when they are in a retracted position, capable of being successively dragged among each other when the release of the retention (or link-pin) means of the innermost one is produced, provoked by the action of a spring provided for such a purpose. Alternatively, the extendible component may adopt the shape of a bellows, enclosing in its interior the hypodermic needle of the syringe and dragging during its displacement a distal component like a tumbler, which incorporates at the inside face of its base a semi-ovoidal body consisting of sections which may be mutually brought together by elastic recovery and positioned against the needle to prevent return of the tumbler. The release of the mechanism is produced by the pushing action applied by link pins activated internally by means of a conical part.
REFERENCES:
patent: 5376080 (1994-12-01), Petrussa
patent: 5411487 (1995-05-01), Castagna
patent: 5549558 (1996-08-01), Martin
patent: 5554131 (1996-09-01), Lacivita
Michaelson Peter L.
Yasko John B.
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