Retractable safety infusion needle
First Claim
1. A needle device, comprising:
- a housing having a first end with a first opening and a second end with a second opening;
a needle assembly having a needle attached to a needle hub slidably fitted within said housing, the needle extendable through said first opening and said needle hub passable through said second opening;
a bias element inside said housing for applying a biasing force against said needle hub towards said second end;
a key movably fitted to said housing at a first placement substantially orthogonal to the longitudinal axis of said housing for maintaining said needle assembly in a first position relative to said housing whereby the needle is extended out of said first opening, said key means actuable to a second placement substantially orthogonal to the longitudinal axis of said housing to allow the needle to be retracted into said housing due to said needle assembly being biased by said bias means; and
safety means coacting with said key to prevent inadvertent actuation of said key from said first placement to said second placement.
2 Assignments
0 Petitions
Accused Products
Abstract
A needle device, possibly in the form of a butterfly or IV needle, has a housing with an orthogonal passage to the bore of the housing. A key that has a non-uniform opening with spaces defined by the opposing inner walls of its two extending legs is inserted into the passage. By positioning the key at different placement locations relative to the passage so that the different dimensioned spaces of the opening become aligned with the bore of the housing, the needle assembly can be selectively retained at at least a first position whereby the needle is extended out of the housing, and a second position whereby the needle is permanently retracted within the housing after use.
48 Citations
23 Claims
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1. A needle device, comprising:
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a housing having a first end with a first opening and a second end with a second opening;
a needle assembly having a needle attached to a needle hub slidably fitted within said housing, the needle extendable through said first opening and said needle hub passable through said second opening;
a bias element inside said housing for applying a biasing force against said needle hub towards said second end;
a key movably fitted to said housing at a first placement substantially orthogonal to the longitudinal axis of said housing for maintaining said needle assembly in a first position relative to said housing whereby the needle is extended out of said first opening, said key means actuable to a second placement substantially orthogonal to the longitudinal axis of said housing to allow the needle to be retracted into said housing due to said needle assembly being biased by said bias means; and
safety means coacting with said key to prevent inadvertent actuation of said key from said first placement to said second placement. - View Dependent Claims (2, 3, 5, 6, 7)
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- 4. The needle device of claim 4, wherein said housing has an upraised well formed at said first end, and wherein said base is configured to fit into said well, the outside wall of each of said legs of said base having a notch that coacts with a catch from the inside wall of said well to maintain the converged opposed portions of said legs in abutting relationship with said collar when said key is at said first placement, at least a portion of said base being located above the mouth of said well at said first placement.
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9. A needle apparatus, comprising:
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a housing having a first end with a first opening and a second end with a second opening, a bore extending longitudinally along said housing, a passage orthogonal to the longitudinal axis of said housing in communication with the bore of said housing;
a needle assembly having a needle attached to a needle hub slidably fitted within said housing, the needle extendable through said first opening and said needle hub passable through said second opening;
a bias element inside said housing for applying a biasing force against said needle hub towards said second end; and
a key mechanism movably fitted to said passage of said housing, said key mechanism being movable to at least a first placement location and a second placement location relative to said housing, said key mechanism having at least two apertures of different dimensions, one of said apertures having a dimension that prevents the movement of said needle hub to maintain the extension of the needle out of said first opening of said housing, the other of said apertures having a dimension that allows said needle hub to pass through, the movement of said key mechanism being substantially orthogonal to the longitudinal axis of said housing. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A butterfly needle assembly, comprising:
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a housing having a first end with a first opening and a second end with a second opening, a bore extending longitudinally along said housing, a passage orthogonal to the longitudinal axis of said housing in communication with the bore of said housing;
a needle hub slidably fitted within said housing, a needle extending from said needle hub extendable through said first opening, said needle hub passable through said second opening;
a spring element inside said housing for applying a biasing force against said needle hub towards said second end; and
a key mechanism movably fitted to said passage of said housing, said key mechanism being movable to at least a first placement location and a second placement location relative to said housing, said key mechanism having a non-uniform opening configured to block the biased movement of said needle hub when said key mechanism is at said first placement location and to allow the retraction of the needle into said housing when said key mechanism is at said second placement location, the movement of said key mechanism being substantially orthogonal to the longitudinal axis of said housing. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification