Puncture safe needle assembly

• US 5,899,886 A
• Filed: 07/07/1997
• Issued: 05/04/1999
• Est. Priority Date: 07/07/1997
• Status: Expired due to Fees

• Current Assignee: Edgar Z. Cosme
• Original Assignee: Edgar Z. Cosme
• Inventors: Cosme, Edgar Z.
• Primary Examiner(s): YASKO JR, JOHN D
• Application Number:
  US08/896,277
• Time in Patent Office: 666 Days
• Field of Search: 604/192, 604/198, 604/187, 604/263, 604/195
• US Class Current: 604/192
• CPC Class Codes: A61M 5/3243 being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel devices for protecting guide needles in combination with catheters A61M25/0612
• CPC Class Codes: A61M 5/3271 with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position
• CPC Class Codes: G08B 13/2408 using ferromagnetic tags
• CPC Class Codes: G08B 13/2434 Tag housing and attachment details
• CPC Class Codes: G08B 13/2437 Tag layered structure, processes for making layered tags
• CPC Class Codes: G08B 13/2442 Tag materials and material properties thereof, e.g. magnetic material details

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.

Claims

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.

2. The needle assembly of claim 1 wherein the needle assembly is made of material selected from the group consisting of glass, metal, hard rubber compound and plastic polymeric material.

3. The needle assembly of claim 2 wherein the polymeric material is selected from the group consisting of polyvinyl chloride, polyvinylacetate, polyethylene, polypropylene, nylon, polycarbon, polyurethane, ethylene vinyl acetate, polysulfone and combinations of any of these formulations.

4. The needle assembly of claim 1 wherein the first and second longitudinal walls of the needle holder have overhangs bordering the entire length of the walls and directed inwards for receiving the interlocking means.

5. The needle assembly of claim 1 wherein the hollow needle has a lumen in direct communication with the hollow connector, the hollow connector having a conical interior cavity tapering into the lumen of the needle.

6. The needle assembly of claim 1 wherein the other end of the hollow connector not connected to the needle has a luer lock tip.

7. The needle assembly of claim 1 wherein the needle handle is cylindrical having a pair of horizontally oriented wing-like structure.

8. The needle assembly of claim 1 wherein the needle sleeve has a gridded area on the outer surface.

9. The needle assembly of claim 1 further comprising of a cap means for closing an end of the needle assembly.

10. The needle assembly of claim 1 wherein the means for interlocking the needle sleeve with the needle holder is an interlocking member comprising a proximal end, an angular distal end, a downward step-legged projection on the proximal end, a step portion of the step-legged projection 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.

11. The needle assembly of claim 1 wherein the needle assembly is disposable.

12. The needle assembly of claim 1 further comprising a second closed walled proximal end, a recessed cylindrical extension between the closed walled proximal end and the second closed walled proximal end, and a cut out area from the top of the closed walled proximal end.

13. The needle assembly of claim 12 wherein the means for interlocking the needle sleeve with the needle holder is an interlocking member comprising a proximal end, an angular distal end, a clamp on the proximal end, and a finger hook on the distal angular end for engagement and release.

14. A needle assembly for use with a fluid delivery device, comprising:

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.

15. A needle assembly for use with a fluid delivery device, comprising:

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.