Syringe with co-molded hub and cannula
First Claim
1. A prefilled syringe for injecting medicament into a patient, the syringe comprising:
- a barrel constructed of a polymeric material, the barrel including a diameter, a longitudinal axis, a proximal end and a distal end;
a cannula having a proximal end and a tip opposite the proximal end, the proximal end fixed to the distal end of the barrel, the cannula positioned generally coaxially with the longitudinal axis; and
a hub integrally formed with the distal end, the hub including a rib section and a cap, the rib section having a generally cruciform cross-section taken along a rib plane, the rib plane being generally perpendicular to the longitudinal axis, the cap having a generally U-shaped cross-section taken along a longitudinal plane and a hollow interior such that a void space is present between the cannula and the cap, the longitudinal plane being generally parallel to the longitudinal axis,wherein the rib section includes a first pair of ribs and a second pair of ribs, the first pair of ribs includes a first rectangular rib and a second rectangular rib, the first rectangular rib positioned on an opposite side of the longitudinal axis relative to the second longitudinal rib, the second pair of ribs includes a first T-shaped rib and a second T-shaped rib, the first T-shaped rib positioned on an opposite side of the longitudinal axis relative to the second T-shaped rib.
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Accused Products
Abstract
A prefilled syringe for injecting medicament into a patient includes a barrel constructed of a polymeric material, a cannula and a hub. The barrel has a diameter, a longitudinal axis, a proximal end and a distal end. The cannula has a proximal end and a tip opposite the proximal end. The proximal end of the cannula is fixed to the distal end of the barrel. The cannula is positioned generally coaxially with the longitudinal axis. The hub is integrally formed with the distal end. The hub includes a rib section and a cap. The rib section has a generally cruciform cross-section taken along a rib plane. The rib plane is generally perpendicular to the longitudinal axis. The cap has a generally U-shaped cross-section taken along a longitudinal plane. The longitudinal plane is generally parallel to the longitudinal axis.
125 Citations
11 Claims
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1. A prefilled syringe for injecting medicament into a patient, the syringe comprising:
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a barrel constructed of a polymeric material, the barrel including a diameter, a longitudinal axis, a proximal end and a distal end; a cannula having a proximal end and a tip opposite the proximal end, the proximal end fixed to the distal end of the barrel, the cannula positioned generally coaxially with the longitudinal axis; and a hub integrally formed with the distal end, the hub including a rib section and a cap, the rib section having a generally cruciform cross-section taken along a rib plane, the rib plane being generally perpendicular to the longitudinal axis, the cap having a generally U-shaped cross-section taken along a longitudinal plane and a hollow interior such that a void space is present between the cannula and the cap, the longitudinal plane being generally parallel to the longitudinal axis, wherein the rib section includes a first pair of ribs and a second pair of ribs, the first pair of ribs includes a first rectangular rib and a second rectangular rib, the first rectangular rib positioned on an opposite side of the longitudinal axis relative to the second longitudinal rib, the second pair of ribs includes a first T-shaped rib and a second T-shaped rib, the first T-shaped rib positioned on an opposite side of the longitudinal axis relative to the second T-shaped rib. - View Dependent Claims (2, 3)
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4. A prefilled syringe for injecting medicament into a patient, the syringe comprising:
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a barrel constructed of a polymeric material, the barrel including a diameter, a longitudinal axis, a proximal end and a distal end; a cannula having a proximal end and a tip opposite the proximal end, the proximal end fixed to the distal end of the barrel, the cannula positioned generally coaxially with the longitudinal axis; and a hub integrally formed with the distal end, the hub including a rib section and a cap, the rib section having a generally cruciform cross-section taken along a rib plane, the rib plane being generally perpendicular to the longitudinal axis, the cap having a generally U-shaped cross-section taken along a longitudinal plane and a hollow interior such that a void space is present between the cannula and the cap, the longitudinal plane being generally parallel to the longitudinal axis, wherein the rib section includes a first rectangular rib and a first T-shaped rib. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A prefilled syringe for injecting medicament into a patient, the syringe comprising:
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a barrel constructed of a polymeric material, the barrel including a diameter, a longitudinal axis, a proximal end and a distal end; a cannula having a proximal end and a tip opposite the proximal end, the proximal end fixed to the distal end of the barrel, the cannula positioned generally coaxially with the longitudinal axis; and a hub integrally formed with the distal end, the hub including a rib section and a cap, the rib section having a generally cruciform cross-section taken along a rib plane and including a first pair of ribs and a second pair of ribs, the second pair of ribs having a generally H-shaped cross-section, the rib plane being generally perpendicular to the longitudinal axis, the cap having a generally U-shaped cross-section taken along a longitudinal plane, the longitudinal plane being generally parallel to the longitudinal axis.
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11. A prefilled syringe for injecting medicament into a patient, the syringe comprising:
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a barrel constructed of a polymeric material, the barrel including a diameter, a longitudinal axis, a proximal end and a distal end; a cannula having a proximal end and a tip opposite the proximal end, the proximal end fixed to the distal end of the barrel, the cannula positioned generally coaxially with the longitudinal axis; and a hub integrally formed with the distal end, the hub including a rib section and a cap, the rib section having a generally cruciform cross-section taken along a rib plane which is generally perpendicular to the longitudinal axis and including a first pair of ribs and a second pair of ribs, the second pair of ribs including a first T-shaped rib and a second T-shaped rib, the first T-shaped rib positioned on an opposite side of the longitudinal axis relative to the second T-shaped rib, each of the first and second T-shaped ribs having a bulbous distal end proximate the distal end of the barrel and a narrowed stem portion extending from the bulbous distal end toward the cap, the cap having a generally U-shaped cross-section taken along a longitudinal plane, the longitudinal plane being generally parallel to the longitudinal axis.
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Specification