Carefusion 303, Inc.

Shervin Maleki

Raymond P Feith

Eugene E Mason

Check valve are disclosed having a primary seal and a secondary seal, where the primary and secondary seals resist movement of a fluid through the check valve, and the secondary seal can provide a backup seal in an instance where the check valve does not function as intended. The primary and secondary seals can be formed by first and second sealing ridges, respectively, and a valve body can be positioned within the check valve, between a valve support, the first sealing ridge, and a second sealing ridge. The valve body is configured to move relative to the first and second sealing ridges, and can have a position wherein a portion of the valve body is engaged against any of the first and second sealing ridges.

Check valve with secondary backflow seal

Check valve assemblies for fluid flow sets and devices are provided. The check valve assembly includes an inlet body including a fluid inlet, a first seal bead and a second seal bead, and an outlet body including a fluid outlet. A seal includes inner and outer rings, wherein, in a fully sealed position of the check valve assembly, the inner ring is configured to engage with the first seal bead and the outer ring is configured to engage with the second seal bead. Fluid flow sets and methods for manufacturing check valve assemblies are also provided.

Check valve with flash seal

Check valve assemblies for fluid flow sets and devices are provided. The check valve assembly includes an inlet body including a fluid inlet, first and second seal beads, and a central channel. An outlet body includes a fluid outlet and a stem having a centering post, the centering post received by the central channel of the inlet body. A seal includes inner and outer rings, wherein the inner ring is configured to engage with the first seal bead and the outer ring is configured to engage with the second seal bead in a fully sealed position of the check valve assembly. Fluid flow sets and methods for manufacturing check valve assemblies are also provided.

Check valve assemblies for fluid flow sets and devices are provided. The check valve assembly includes a housing having an inlet body and an outlet body. The inlet body includes a fluid inlet, a first seal bead having a first height, a second seal bead having a second height and a central channel. The outlet body includes a fluid outlet and a stem having a centering post, the centering post received by the central channel of the inlet body. A seal has an inner ring with a first thickness and an outer ring with a second thickness less than the first thickness. The inner ring is engaged with the first seal bead and the outer ring is engaged with the second seal bead in a fully sealed position of the check valve assembly. Fluid flow sets and methods for manufacturing check valve assemblies are also provided.

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Long Beach, CA, United States of America

Shervin Maleki