Needleless access port valves
First Claim
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1. A method for making an injection port valve comprising:
- simultaneously mixing together at least a first compound, a second compound and a third compound to form a mixed compound, each compound provided from a different feed;
forming a piston assembly, wherein the piston assembly comprises a slit along a top surface, a seal surface, a body section having an exterior surface, and a piston cavity, wherein the piston is made by the mixed compound to form the body section, and wherein the body section comprises a wall having a wall thickness that emits liquid silicone from within the wall to the exterior surface;
installing the piston assembly into an interior cavity of a valve housing, the valve housing comprising a cylinder end and a valve seat;
wherein the seal surface is seated against the valve seat; and
wherein the first compound and the second compound form a two-part liquid silicone rubber compound; and
wherein the third compound comprises a blend of carrier and antimicrobial agents.
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Abstract
Needleless access port valves are generally discussed herein with particular discussions extended to needleless access port valves having a pliant valve piston and/or plug that exudes silicone oil when stressed or squeezed while providing antimicrobial agents within and on the surface of the piston and/or plug. The pliant valve piston may have an integrally formed plug and one or more ports or a separately formed plug located inside a plastic housing. The plug cooperates with a nozzle on the inlet connector assembly to form a slip port or a Luer inlet, which can open when exerted by force to permit flow or closes when the force is removed.
47 Citations
15 Claims
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1. A method for making an injection port valve comprising:
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simultaneously mixing together at least a first compound, a second compound and a third compound to form a mixed compound, each compound provided from a different feed; forming a piston assembly, wherein the piston assembly comprises a slit along a top surface, a seal surface, a body section having an exterior surface, and a piston cavity, wherein the piston is made by the mixed compound to form the body section, and wherein the body section comprises a wall having a wall thickness that emits liquid silicone from within the wall to the exterior surface; installing the piston assembly into an interior cavity of a valve housing, the valve housing comprising a cylinder end and a valve seat;
wherein the seal surface is seated against the valve seat; andwherein the first compound and the second compound form a two-part liquid silicone rubber compound; and wherein the third compound comprises a blend of carrier and antimicrobial agents. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for making a piston for use with a valve assembly comprising:
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simultaneously mixing together at least a first compound, a second compound and a third compound to form a mixed compound, each compound provided from a different feed, the first compound and the second compound forming a two-part silicon rubber compound; forming a piston assembly, wherein the piston assembly comprises a body section having an exterior surface, a seal surface, a slit along an upper surface and extending radially to an exterior surface and axially, and a piston cavity, wherein the piston is made by the mixed compound to form the body section, and wherein the body section comprises a wall having a wall thickness that emits liquid silicone from within the wall to the exterior surface when stressed; stressing the piston so that it exudes silicone oil; and wherein the third compound comprises a blend of colorant, carrier, and antimicrobial agents. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification