Hypodermic syringe with a blockable piston capable of preventing

Details Hypodermic syringe with a blockable piston capable of preventing Hypodermic syringe with a blockable piston capable of preventing

1991-10-29

1993-10-05

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604210, 604218, A61M 500

Patent

active

052500306

ABSTRACT:
Hypodermic syringe with a blockable piston capable of preventing it recharge and reuse, comprising a cylindrical tubular body having a communicating container in its inlet end; a right-angled section piston rod; a first blocking means constituted by at least one member placed in abutment against rotation over the container bottom and opposed alternatively to on and the other of toothed intermediate sections of the piston rod; and a second blocking means slidingly mounted over the piston rod, placed in abutment with the first blocking means and urged in positional fastening by an elastic retention member constituting in turn, the lid of the container.

REFERENCES:
patent: 4840616 (1989-06-01), Banks
patent: 4978339 (1990-12-01), Labouze et al.
patent: 5024661 (1991-06-01), Wender et al.
patent: 5084017 (1992-01-01), Maffetone

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