Syringe having needle safely receiving structure
First Claim
Patent Images
1. A syringe comprising:
- a housing including a front portion and a rear portion, a needle support received in said front portion of said housing, and including a front portion having a tube extended therefrom, and including a bore formed therein, a needle attached to said tube of said needle support and extendible outward of said housing, a plunger including a piston slidably received in said housing and movable toward and away from said needle support, and including a stem detachably secured to said piston, for moving said piston toward and away from said needle support, wherein said needle support includes a rear portion having at least one spring latch provided thereon, and a notch formed between said at least one spring latch and said needle support, said piston includes a front portion having a peripheral rib laterally extended therefrom for moving over said at least one spring latch and for engaging into said notch of said needle support, and for securing said piston to said needle support when said piston is forced toward said needle support, said needle support is movable into said housing by said plunger when said piston of said plunger is moved away from said front portion of said housing, and said housing includes at least one jut provided in said front portion thereof, said needle support includes at least one bulge extended therefrom for engaging with said at least one jut of said housing, and for limiting a rotational movement between said needle support and said housing.
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Abstract
A syringe includes a needle support received in a front portion of a housing and having a front tube for attaching a needle. A plunger includes a piston slidably received in the housing and a stem detachably secured to the piston. The piston may be secured to the needle support for pulling the needle into the housing after use. The needle support has one or more bulges for engaging with juts of the housing for limiting the needle support to rotate relative to the housing. The piston includes a rod and a pole for adequately forcing medicine out of the needle support.
51 Citations
10 Claims
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1. A syringe comprising:
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a housing including a front portion and a rear portion, a needle support received in said front portion of said housing, and including a front portion having a tube extended therefrom, and including a bore formed therein, a needle attached to said tube of said needle support and extendible outward of said housing, a plunger including a piston slidably received in said housing and movable toward and away from said needle support, and including a stem detachably secured to said piston, for moving said piston toward and away from said needle support, wherein said needle support includes a rear portion having at least one spring latch provided thereon, and a notch formed between said at least one spring latch and said needle support, said piston includes a front portion having a peripheral rib laterally extended therefrom for moving over said at least one spring latch and for engaging into said notch of said needle support, and for securing said piston to said needle support when said piston is forced toward said needle support, said needle support is movable into said housing by said plunger when said piston of said plunger is moved away from said front portion of said housing, and said housing includes at least one jut provided in said front portion thereof, said needle support includes at least one bulge extended therefrom for engaging with said at least one jut of said housing, and for limiting a rotational movement between said needle support and said housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification