Tamper-proof hypodermic syringe assembly

Details Tamper-proof hypodermic syringe assembly Tamper-proof hypodermic syringe assembly

1990-05-16

1992-08-04

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604199, A61M 500

Patent

active

051354969

ABSTRACT:
A hypodermic syringe assembly has a hollow body having a neck centered on an axis, an elastomeric plug fitted in the neck and having an end projecting axially forward from the neck, a stiffening sleeve fitted over the plug and neck and having a collar fitting around the projecting plug end and itself projecting axially therepast, an elastomeric stopper fitted into the collar, and a protective cap fitted over the plug, sleeve, and stopper. A destructible connection between the cap and the sleeve retains the cap in place on the body over the plug, sleeve, and stopper. This cap is therefore only removable from the body by destruction of the connection. The protective cap is basically cylindrical and centered on the axis and has a front end wall generally transverse of the axis and an opposite rear end edge and the destructible connection extends annularly between the end edge of the cap and the sleeve. Furthermore the destructible connection includes a ring fixed on the sleeve and having a front end edge confronting the rear end edge of the cap and the connections itself is between the end edges.

REFERENCES:
patent: 3485239 (1967-11-01), Vanderbeck
patent: 3739779 (1970-04-01), Pfleger
patent: 3820652 (1974-06-01), Thackston
patent: 3989044 (1976-11-01), Meierhoefer
patent: 4231486 (1980-11-01), Bock
patent: 4300678 (1981-11-01), Gyure
patent: 4493427 (1985-01-01), Wolkonsky
patent: 4720285 (1988-01-01), Pickhard
patent: 4747500 (1988-05-01), Gach
patent: 4781701 (1988-11-01), Geprags

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