Needleless access port valves
First Claim
1. A piston for regulating flow from an inlet port and an outlet port of a medical valve assembly comprising a wall surface defining a cavity, an upper surface, a singularly formed neck section having a slit, and a singularly formed body section;
- the piston being made from a first compound and a second compound forming a two-part silicone material mixed with a third compound comprising a blend of colorant, carrier, and antimicrobial agents; and
the first compound, the second compound, and the third compound being a mixture of different feeds that are simultaneously mixed together to form an injectable material for molding the piston.
0 Assignments
0 Petitions
Accused Products
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.
-
Citations
22 Claims
-
1. A piston for regulating flow from an inlet port and an outlet port of a medical valve assembly comprising a wall surface defining a cavity, an upper surface, a singularly formed neck section having a slit, and a singularly formed body section;
- the piston being made from a first compound and a second compound forming a two-part silicone material mixed with a third compound comprising a blend of colorant, carrier, and antimicrobial agents; and
the first compound, the second compound, and the third compound being a mixture of different feeds that are simultaneously mixed together to form an injectable material for molding the piston. - View Dependent Claims (2, 3, 4, 5, 6)
- the piston being made from a first compound and a second compound forming a two-part silicone material mixed with a third compound comprising a blend of colorant, carrier, and antimicrobial agents; and
-
7. A method for making a medical injection port valve comprising:
-
simultaneously mixing together a first compound from a first feed, a second compound from a second feed, and a third compound from a third feed to form an admixture; foaming a piston comprising 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 admixture to form the body section; installing the piston into an interior cavity of a valve housing having an inlet and an outlet; and wherein the first compound and the second compound form a two-part liquid silicone rubber compound and the third compound comprises a blend of a carrier and antimicrobial agents. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
-
-
15. A system for making medical grade pistons for use with valve assemblies comprising:
-
a mixing device for simultaneously mixing together at least a first compound, a second compound, and a third compound to form an admixture, each compound provided from a different feed, the first compound and the second compound forming a two-part silicon rubber compound; a pump for pumping the admixture; a pressure and heater chamber for heating and pressuring the admixture; a nozzle for discharging the admixture into a mold chamber, and wherein a plurality of pistons are formed, each piston comprising a body section having an exterior surface, a seal surface, and a piston cavity, 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; and wherein the third compound comprises a blend of colorant, carrier, and antimicrobial agents. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
-
Specification