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Publication Number
US-11324928-B2
Publication Date
2022-05-10
Expiration Date
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.
Core Innovation
The disclosure describes a winged percutaneous needle assembly for percutaneously infusing fluids that includes a polymeric body with a passageway and an outer surface. The outer surface has a circumferentially continuous, outwardly tapering protrusion at a distal end, and the body further includes first and second heels with a reception groove located between the heels. The reception groove is operable to receive a mounting base, and the reception groove is positioned distally of a wing assembly.
The assembly further includes a wing assembly secured to the polymeric body, with first and second wings extending laterally in opposite directions from the polymeric body, where the polymeric body and the wing assembly are comprised in one monolithic unit. A mounting base including a ring structure is configured to snap fit into the reception groove, in response to being positioned over the circumferentially continuous, outwardly tapering protrusion and into the reception groove. The needle is press fitted or interference fitted in the passageway.
A pivotable shielding arm is connected to the polymeric body via a hinge structure including at least one toggle joint and at least one tension member. The shielding arm is pivotable from an open position to a closed position, where a tip of the needle is uncovered in the open position and covered by the shielding arm in the closed position. The shielding arm includes a locking bar extending transversely of the arm, and the locking bar includes a slit that permits movement of a needle in one direction past the bar while preventing movement of the needle in an opposite direction.
Claims Coverage
The partial content provides three independent claims. Across these, the claims consistently cover a polymeric monolithic needle body with laterally opposite wings, a hollow needle arranged in a passageway, a distally positioned snap-fit mounting base with a ring structure received in a reception groove, and a hinge-driven, pivotable shielding arm with a toggle joint and tension member; one claim additionally specifies a locking bar with a slit that permits one-direction movement and prevents opposite-direction movement, and open vs. closed coverage of the needle tip.
Monolithic polymeric needle body with distally positioned reception groove and snap-fit ring mounting base
A polymeric body having a passageway and an outer surface, the outer surface having a circumferentially continuous, outwardly tapering protrusion at a distal end, the body including first and second heels with a reception groove located in between the first and second heels, where the reception groove is operable to receive a mounting base; wherein a mounting base including a ring structure snap fits into the reception groove in response to being positioned over the outwardly tapering protrusion and into the reception groove, and wherein the reception groove is positioned distally of the wing assembly.
Press fitted or interference fitted hollow needle in passageway of monolithic polymeric body and wing assembly
A hollow needle arranged in the passageway such that it extends distally from the polymeric body; wherein the needle is press fitted or interference fitted in the passageway, and the polymeric body and the wing assembly are comprised in one monolithic unit.
Wing assembly with laterally opposite wings secured to the polymeric body
A wing assembly secured to the polymeric body, including first and second wing extending laterally in opposite directions from the polymeric body.
Toggle-joint and tension-member hinge structure pivoting an arm relative to the polymeric body
A hinge structure 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.
Pivotable shielding arm that covers and uncovers the needle tip with one-direction locking bar slit
A shielding arm 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; wherein the shielding arm includes a locking bar extending transversely of said arm, the locking bar includes a slit, and 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.
Taken together, the independent claims require a polymeric body with a passageway, distally located reception groove, and a circumferentially continuous outwardly tapering protrusion; a monolithic wing assembly with laterally opposite wings; a hollow needle arranged in the passageway and extending distally; a snap-fit mounting base with a ring structure received in the reception groove; and a hinge structure with at least one toggle joint and at least one tension member configured to pivot a shielding arm, with one claim additionally requiring open/closed coverage of the needle tip and a locking bar with a slit enabling one-direction movement while preventing opposite-direction movement.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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