Needle assembly
First Claim
Patent Images
1. A needle assembly for use with a fluid delivery device, comprising:
- a needle holder having a closed walled proximal end, an open distal end, a walled first and second longitudinal side, a solid base, a hollow top surface, a hollow needle embedded to the solid base, and a two ended hollow connector mounted to the needle at one end;
a sliding needle sleeve for surrounding the needle holder, the sleeve slidably movable relative to the needle holder in the direction of the length of the needle from a first position in which the needle projects outside of the needle sleeve to a second position in which the needle is within the needle sleeve;
means for engaging the needle holder with the needle sleeve;
means for interlocking the needle sleeve with the needle holder; and
,means for stopping the rearward and forward motion of the needle sleeve relative to the needle holder.
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Abstract
A needle assembly with a needle holder, a needle sleeve movable over the needle holder, and an interlocking member. The needle sleeve encloses a needle holder and is manually extendable and retractable in a telescopic manner to enclose or expose respectively the distal sharp portion of a needle without the aid of a spring or spring-like device. In this assembly, the needle attached to a connector is embedded into the needle holder to prevent movement of the needle during use. Temporary locking and release means are provided which are simple and inexpensive in design.
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Citations
14 Claims
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1. A needle assembly for use with a fluid delivery device, comprising:
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a needle holder having a closed walled proximal end, an open distal end, a walled first and second longitudinal side, a solid base, a hollow top surface, a hollow needle embedded to the solid base, and a two ended hollow connector mounted to the needle at one end; a sliding needle sleeve for surrounding the needle holder, the sleeve slidably movable relative to the needle holder in the direction of the length of the needle from a first position in which the needle projects outside of the needle sleeve to a second position in which the needle is within the needle sleeve; means for engaging the needle holder with the needle sleeve; means for interlocking the needle sleeve with the needle holder; and
,means for stopping the rearward and forward motion of the needle sleeve relative to the needle holder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14)
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12. A needle assembly for use with a fluid delivery source, comprising:
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a needle holder having a walled first and second longitudinal side, an overhang directed internally bordering along the entire length of the first and second longitudinal walls, a protrusion on the distal outer surface of the first and second longitudinal walls, an open distal end, a closed walled proximal end, the closed proximal end wall extending slightly beyond the first and second longitudinal walls, a solid base, a hollow top surface, a hollow needle embedded on the solid base and a two ended hollow connector mounted to the hollow needle on one end; an interlocking member having a planar proximal end and an angular distal end, the distal end narrower than the proximal end, a step recess on the longitudinal sides of the planar proximal end abutting on the overhang along the first and second longitudinal walls of the needle holder when introduced therethrough, and a finger hook on the distal angular end for engagement and release; a needle sleeve for surrounding the needle holder, having an open proximal and distal end to receive the needle holder therethrough, closed walled longitudinal, bottom and top surfaces, a groove along the inner surface of the longitudinal wall for engaging with the protrusion on the outer surface of the needle holder thereby permitting traversal of the protrusion along the groove, a cut out area on the top surface for engaging with the finger hook of the interlocking member thereby temporarily locking the needle sleeve to a position shielding the distal tip of the hollow needle; and
,means for controlling the position of the needle sleeve relative to the needle holder thereby shielding or exposing the hollow needle as desired.
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Specification