Hypodermic syringe
First Claim
Patent Images
1. An improved disposable syringe adapted to be used but once, said syringe comprising:
- (a) a hollow tubular portion for containing a medicament dose, and a hypodermic needle secured to one end of said tubular portion and projecting therefrom;
(b) means in said hollow tubular portion for pumping a dose of medicament therefrom through said needle; and
(c) retracting means movably mounted on said housing, said retracting means being operable to engage said needle and bend the latter to pull said needle from its projecting position to a safe position wherein said needle is covered over by a portion of said syringe.
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Accused Products
Abstract
A hypodermic syringe which has provisions for preventing more than one use thereof and rendering the needle inoperative and harmless. A device is mounted on the syringe which, after administering an injection, is manipulated to bend the needle portion of the syringe and concurrently retract the needle from its normally projecting position whereby the needle cannot accidentally cause injury to anyone.
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Citations
8 Claims
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1. An improved disposable syringe adapted to be used but once, said syringe comprising:
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(a) a hollow tubular portion for containing a medicament dose, and a hypodermic needle secured to one end of said tubular portion and projecting therefrom; (b) means in said hollow tubular portion for pumping a dose of medicament therefrom through said needle; and (c) retracting means movably mounted on said housing, said retracting means being operable to engage said needle and bend the latter to pull said needle from its projecting position to a safe position wherein said needle is covered over by a portion of said syringe.
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2. An improved disposable syringe adapted to be used but once, said syringe comprising:
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(a) a hollow tubular portion for a medicament dose, and a hypodermic needle disposed on one end of said tubular portion projecting therefrom; (b) means in said housing for pumping a dose of medicament therefrom through said needle; and (c) a retracting member movably mounted on said housing, said retracting member being disposed on said housing in a position wherein said needle projects therethrough, and said retracting member being movable laterally across said needle to engage said needle and bend said needle and pull the latter to a safe position wherein said needle is covered by a portion of said syringe.
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3. An improved disposable syringe adapted to be used but once, said syringe comprising:
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(a) a hollow tubular portion for containing a dose of medicament, and a hypodermic needle, said needle being disposed in an operative position projecting from one end of said tubular portion; (b) means in said tubular portion for pumping a dose of medicament through said needle; and (c) a disk mounted adjacent to said one end of said tubular portion, said disk being movable across said one end of said tubular portion but being secured to said tubular portion so as not to be readily detachable therefrom, said disk being movable from a first position wherein said needle projects through said disk to a second position wherein said disk moves laterally across said needle to engage the projecting needle and bend the latter thereby retracting the needle out of its projecting position to a safe position wherein said needle is completely covered by a portion of the syringe.
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4. An improved disposable syringe adapted to be used but once, said syringe comprising:
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(a) a tubular portion for containing a dose of a medicament, and a hypodermic needle, said needle being disposed in an operative position projecting from one end of said tubular portion; (b) means in said tubular portion for pumping a dose of medicament through said needle; and (c) a retractor member movably mounted on an external surface of said one end of said tubular member, said retractor member being secured to said one end of said tubular member so as not to be readily removable therefrom, said retractor member being movable from a first position wherein said needle projects through said retractor member to a second position wherein said retractor member moves laterally across said needle to engage and bend the projecting needle until said needle is bent to a safe position wherein said needle is covered by said retractor member. - View Dependent Claims (5, 6, 7)
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8. An improved disposable syringe adapted to be used but once, said syringe comprising:
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(a) a hollow tubular portion for containing a dose of a medicament, and a hypodermic needle, said needle being mounted on and projecting from one end of said tubular portion, and said tubular portion being formed with a lug, said lug being radially offset from said needle; (b) means in said tubular portion for pumping a dose of medicament through said needle; (c) a needle retractor disk mounted on said lug, said retractor disk overlying the majority of said one end of said tubular portion and having a through passage which is co-axial with said needle and through which said needle projects, and said retractor disk being rotatable about said lug whereby said through passage is moved out of alignment with said needle to move said retractor disk against the protruding needle to bend the latter and draw the needle back through said retractor disk through passage to a safe position wherein the bent needle underlies said retractor disk.
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Specification