Syringe having means for retracting, canting and destroying a ne

Details Syringe having means for retracting, canting and destroying a ne Syringe having means for retracting, canting and destroying a ne

1989-10-13

1992-04-14

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604195, A61M 500, A61M 532

Patent

active

051043785

ABSTRACT:
A cost effective, disposable, safety syringe having a conventional single ended hypodermic needle cannula retained in an axially extended position at the distall end of a cylinder by an epoxy bond formed with the central core of a needle carrying hub. A locking and retracting probe extends proximally into the syringe cylinder from the central core of the needle hub. A piston assembly, having an offset locking bore formed therein, is advanced distally through the cylinder to expulse fluid therefrom via the cannula and to receive the locking and retracting probe within the locking bore. A continued distal advancement of the piston assembly through the cylinder causes the central core and the cannula supported thereby to be broken away from the needle hub. Therefore, when the piston assembly is withdrawn proximally through the cylinder, the cannula is correspondingly retracted within and shielded by the cylinder to avoid an accidental needle stick and the spread of disease. The cannula is canted within the cylinder, such that another distal advancement of the piston assembly through the cylinder causes the cannula to be axially collapsed and, thereby, destroyed against a relatively thick shield formed at the distal aspect of the syringe cylinder.

REFERENCES:
patent: 2722215 (1955-11-01), Dahlgren
patent: 3306290 (1967-02-01), Weltman
patent: 3320954 (1967-05-01), Cowley
patent: 3796359 (1974-03-01), Dick
patent: 3811441 (1974-05-01), Sarnoff
patent: 4026287 (1977-05-01), Haller
patent: 4507117 (1985-03-01), Vining et al.
patent: 4542749 (1985-09-01), Caselgrandi et al.
patent: 4553962 (1985-11-01), Brenet
patent: 4562844 (1986-01-01), Carpenter et al.
patent: 4592744 (1986-06-01), Jagger et al.
patent: 4643199 (1987-02-01), Jennings, Jr. et al.
patent: 4650468 (1987-03-01), Jennings, Jr.
patent: 4692156 (1987-09-01), Haller
patent: 4770655 (1988-09-01), Haber et al.
patent: 4804370 (1989-02-01), Haber et al.
patent: 4808169 (1989-02-01), Haber et al.
patent: 4813936 (1989-03-01), Schroeder
patent: 4826484 (1989-05-01), Haber et al.
patent: 4838870 (1989-06-01), Haber et al.
patent: 4874382 (1989-10-01), Lindemann et al.

Affiliated with

Also associated with

Rating

Syringe having means for retracting, canting and destroying a ne does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Syringe having means for retracting, canting and destroying a ne, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Syringe having means for retracting, canting and destroying a ne will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2345683