Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1992-10-15
1993-07-06
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604198, 604145, 604110, A61M 532
Patent
active
052249360
ABSTRACT:
An automatic self-protecting hypodermic needle assembly comprising a hypodermic syringe having a housing, a moveable plunger in the housing, a medicant chamber formed between the housing and the plunger, and a hollow needle extending from the housing in communication with the medicant chamber. A needle guard assembly is attached to the syringe housing and includes a guard housing adjacent the needle, a protective cap removably attached to the guard housing and an aperture through which the needle extends. A propellant is located in the guard housing in communication with the protective cap. When activated by an activating element, the propellant expands from a liquid to a gas, applies a pressure to the protective cap, and drives the protective cap along the length of the needle until the cap extends beyond the tip of the needle and the needle tip becomes embedded in the protective cap. Control means are provided under the operation of the medical attendant using the hypodermic syringe to automatically activate the propellant upon completion of the use of the syringe, and to embed the needle tip into the protective cap.
REFERENCES:
patent: Re25279 (1962-10-01), Crockford et al.
patent: 3055362 (1962-09-01), Uytenbogaart
patent: 3134380 (1964-05-01), Armao
patent: 4031889 (1977-06-01), Pike
patent: 4725267 (1988-02-01), Vaillancourt
patent: 4795432 (1989-01-01), Karczmer
patent: 4846809 (1989-07-01), Sims
patent: 4892521 (1990-01-01), Laico et al.
patent: 4911694 (1990-03-01), Dolan
patent: 4915696 (1990-04-01), Feimer
patent: 4943284 (1990-07-01), Erlich
patent: 4986819 (1991-01-01), Sobel
patent: 5015240 (1991-05-01), Zoltan et al.
patent: 5026353 (1991-06-01), Bartman
patent: 5059180 (1991-10-01), McLees
patent: 5167641 (1992-12-01), Schmitz
LandOfFree
Automatic self-protecting hypodermic needle assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic self-protecting hypodermic needle assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic self-protecting hypodermic needle assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1686438