Safely disposable, non-reusable injection device

Details Safely disposable, non-reusable injection device Safely disposable, non-reusable injection device

1993-06-07

1995-03-28

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604195, 604110, A61M 500

Patent

active

054012490

ABSTRACT:
A syringe
eedle combination comprising a leading tightly capped needle with a flanged conical hub; a hollow cylindroid with a leading interior cone slip-connecting to outside cone of the needle hub and containing an inside left hand-threaded Luer-Lok attachable to needle hub flanges, a cylindric body containing an elastomeric piston and a trailing end having inside and outside annular flanges; and a plunger with leading right-handed threads reversibly mating with right-handed threads inside the needle hub, a leading body passing through and securing the elastomeric piston, a trailing body separable from the leading body by breakage or right-hand threaded attachment, and a trailing end with a thumb-piece. If pre-filled with liquid medication, the user screws the trailing part of the plunger to the leading part, removes the needle cap, sticks the patient, empties the hollow cylindroid via the plunger-activated piston, advances and rotates the plunger thumb-piece clockwise to engage the needle hub, retracts the needle-linked plunger until the trailing end of the elastomeric piston is stopped by the trailing inside flange within the hollow cylindroid, breaks or screws off the trailing part of the plunger, and plugs the empty leading cone of the hollow cylindroid with the needle cap reversed.

REFERENCES:
patent: 4826484 (1989-05-01), Haber et al.
patent: 4826489 (1989-05-01), Haber et al.
patent: 4842586 (1989-06-01), Hogan
patent: 4888002 (1989-12-01), Braginetz et al.
patent: 5007903 (1991-04-01), Ellard
patent: 5215536 (1993-06-01), Lampropoulos et al.
patent: 5242400 (1993-09-01), Blake, III et al.
patent: 5242419 (1993-09-01), Kiner et al.
patent: 5267977 (1993-12-01), Feeney, Jr.
patent: 5318536 (1994-06-01), Williams

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