Huber needle with safety sheath

Patent metadata

Field	Value
Publication number	US-9713673-B2
Application number	US-201314045663-A
Country	US
Kind code	B2
Filing date	Oct 3, 2013
Priority date	Apr 20, 2007
Publication date	Jul 25, 2017
Grant date	Jul 25, 2017

Abstract

A safety needle assembly is described, including a cap, a housing movable relative to the cap from a first position adjacent the cap to an extended second position spaced from the cap, a hollow needle secured in and extending from the housing, and a collapsible sheath secured to both the cap and the housing. The sheath is concentrically disposed about the needle in a collapsed state with the housing in the first position. The sheath is extendable from the collapsed state to an extended state in response to movement of the housing from the first position to the second position.

First claim

What is claimed is:

1. A safety needle assembly comprising:
a cap;
a housing movable relative to the cap from a first position adjacent the cap to an extended second position spaced from the cap;
a hollow needle having a proximal end and a distal end extending along a common axis, the proximal end secured in and extending from the housing;
a line for supplying a fluid to the safety needle assembly extending perpendicular to the axis; and
a continuous film sheath concentrically disposed about the needle in a collapsed state with the housing in the first position, the sheath secured to both the cap and the housing, the sheath extendable from the collapsed state to an extended state in response to movement of the housing from the first position to the second position, the sheath having a frusto-conical shape.

2. The safety needle assembly according to claim 1 , further comprising a needle safety component disposed in a first cavity that translates from an engagement position, wherein a portion of the component is engaged with the needle when the housing is in the first position, to a safety position, wherein the portion covers an opening in a bottom surface of the cap when the housing is in the second position.

3. The safety needle assembly according to claim 2 , wherein the cap comprises a second cavity separated from the first cavity, the needle safety component disposed in the first cavity and the sheath disposed in the collapsed state in the second cavity when the housing is in the first position.

4. The safety needle assembly according to claim 1 , wherein the housing has a bore extending perpendicularly of the needle for receiving the line therein and a chamber communicating the bore with a proximal end of the needle for transferring a liquid delivered at high pressure from the line into the needle.

5. The safety needle assembly according to claim 1 , wherein the cap comprises a circular portion including a pair of diametrically opposed projections, and the housing comprises openings that receive the projections in the first position to releasably hold the housing in the cap.

6. The safety needle assembly according to claim 5 , wherein the cap comprises an upstanding circular wall defining a second cavity coplanar with the circular portion, the circular wall and circular portion together defining an annular recess.

7. The safety needle assembly according to claim 1 , wherein the cap comprises an integral pair of laterally extending wings.

8. The safety needle assembly according to claim 1 , further comprising a foam pad disposed on a bottom surface of the cap.

Assignees

• Bard Access Systems Inc

Inventors

• Vaillancourt Michael J

Classifications

• A61M2005/3258

  being compressible or compressed along the needle · CPC title

• A61M5/3257

  Semi-automatic sleeve extension, i.e. in which triggering of the sleeve extension requires a deliberate action by the user, e.g. manual release of spring-biased extension means · CPC title

• A61M2005/1581

  Right-angle needle-type devices · CPC title

• A61M2005/325

  Means obstructing the needle passage at distal end of a needle protection sleeve · CPC title

• A61M5/158 Primary

  Needles {for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body} · CPC title