Puncture safe needle assembly
First Claim
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 base, a hollow top surface, a needle handle protruding from the inner wall of the closed walled proximal end, a hollow needle, and a two ended hollow connector mounted to the hollow 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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Accused Products
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. An interlocking member that clamps or slips into the needle holder locks or releases the needle sleeve from the needle holder. In this assembly, the needle is attached to a protruding body to prevent movement of the needle during use. At the proximal end of the needle assembly is a connector for communicating the needle assembly to a hypodermic syringe or other fluid delivery device.
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Citations
15 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 base, a hollow top surface, a needle handle protruding from the inner wall of the closed walled proximal end, a hollow needle, and a two ended hollow connector mounted to the hollow 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, 12, 13)
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14. A needle assembly for use with a fluid delivery device, 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 longitudinal walls, an open distal end, a closed walled proximal end, the closed proximal end extending slightly beyond the longitudinal walls, a base, a hollow top surface, a needle handle protruding midway from the inner wall of the closed walled proximal end, a hollow needle, and a two ended hollow connector mounted to the hollow needle at one end; an interlocking member having a proximal end and an angular distal end, the proximal end having a downward step-legged projection for support, a step portion on the longitudinal sides of the step-legged projection abutting on the overhang along the first and second longitudinal walls of the needle holder when introduced therethrough, a hump between the proximal and the angular distal end, and a finger hook on the distal angular end for engagement and release; a sliding needle sleeve for surrounding the needle holder, the needle sleeve 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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15. A needle assembly for use with a fluid delivery device, 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 longitudinal walls, an open distal end, a first and second closed walled proximal end, the second closed proximal end having an extension beyond the longitudinal walls, a recessed extension between the first and second closed walled proximal end, a cut out area from the top of the first closed walled proximal end of the needle holder, a base, a hollow top surface, a needle handle protruding midway from the inner wall of the closed walled proximal end, a hollow needle, and a two ended hollow connector mounted to the hollow needle at one end; an interlocking member having a proximal end and an angular distal end, a hump between the proximal and the angular distal end, a clamp at the proximal end for attachment into the recessed cylindrical extension of the needle holder, and a finger hook on the distal angular end for engagement and release; a sliding needle sleeve for surrounding the needle holder, the needle sleeve 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