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US 11,324,928 B2Granted
Needle assembly
AssigneeGreiner Bio-One GmbH
InventorPer Knutsson
Life of this patent
Estimating the term…
Abstract
A needle assembly for percutaneously infusing fluids to a body and/or withdrawing fluids from a body is provided. The needle assembly comprises a polymeric body having a passageway in a proximodistal direction. A wing assembly is secured to the body, and the wing assembly including first and second wings extending laterally in opposite directions from said body. A hollow needle is arranged in said passageway, such that it extends distally from said body, wherein said needle is press fitted or interference fitted in said passageway.
Claims20
A needle assembly for percutaneously infusing fluids, comprising:
- a polymeric body having a passageway, and an outer surface, the outer surface of the polymeric body having a circumferentially continuous, outwardly tapering protrusion located at a distal end of the body, the body further including a first heel and a second heel with a reception groove located in between the first and second heels, the reception groove is formed on the polymeric body and the groove is operable to receive a mounting base;
- a wing assembly secured to the polymeric body, the wing assembly including first and second wing extending laterally in opposite directions from said polymeric body;
- a hollow needle arranged in said passageway, such that it extends distally from said polymeric body;
- and
- a mounting base including a ring structure having a length configured to snap fit into the reception groove of the outer surface of the polymeric body in response to being positioned over the circumferentially continuous, outwardly tapering protrusion and into the reception groove;
- wherein the reception groove is positioned distally of the wing assembly,
- wherein said needle is press fitted or interference fitted in said passageway, the polymeric body and the wing assembly are comprised in one monolithic unit;
- and
- a hinge structure is configured to permit an arm to pivot relative to the polymeric body, the hinge structure including at least one toggle joint and at least one tension member.
6 more elements
A needle assembly for percutaneously infusing fluids, comprising:
- a polymeric body having a passageway and an outer surface, the outer surface of the polymeric body having a circumferentially continuous, outwardly tapering protrusion, an outer diameter portion, and a smaller diameter portion, the smaller diameter portion is positioned between the tapering protrusion and the outer diameter portion, the smaller diameter portion is formed on the body to provide a reception groove for receiving a mounting base;
- a wing assembly secured to the polymeric body, the wing assembly including first and second wings extending laterally in opposite directions from said polymeric body;
- a hollow needle arranged in said passageway, such that it extends distally from said polymeric body;
- and
- a mounting base including a ring structure having a length configured to snap fit into the reception groove;
- a hinge structure positioned between a shielding arm and the mounting base, the hinge structure including at least one toggle joint and at least one tension member;
- and
- wherein the reception groove is positioned distally of the wing assembly,
- wherein the polymeric body is manufactured of a thermoplastic material.
6 more elements
A needle assembly for percutaneously infusing fluids, comprising:
- a polymeric body having a passageway and an outer surface with a first diameter, the outer surface of the polymeric body further having a circumferentially continuous, outwardly tapering protrusion and a reception groove, the reception groove is formed on the body and has an outside diameter that is less than the first diameter, the reception groove is positioned distally of a wing assembly;
- the wing assembly is secured to the polymeric body, the wing assembly including first and second wings extending laterally in opposite directions from said polymeric body;
- and a hollow needle arranged in said passageway, such that it extends distally from said polymeric body;
- a shielding arm being attached to the polymeric body, such that it is pivotable from an open position to a closed position, wherein a tip of the needle is covered by the shielding arm in the closed position while the needle tip is uncovered in the open position, the shielding arm includes a locking bar extending transversely of said arm, said locking bar includes a slit, the locking bar is configured to permit movement of a needle in one direction past the bar, but prevents a needle from moving in an opposite direction;
- a mounting base including a ring structure having a length configured to snap fit into the reception groove, the ring structure having an inside diameter that is substantially the same as the outside diameter of the reception groove;
- and
- a hinge structure connecting the polymeric body and the shielding arm, the hinge structure including at least one toggle joint and at least one tension member.
4 more elements
Dependencies are inferred from the claim text.