Illinois Tool Works Inc.

Gerard Gabriel Henn

Colm M Carmody

Robert R Schaser

Raymond Jozwik

Brendan Casey

Michael Leonhard

Yash Siddhartha

David Drake Thompson

Elizabeth O Connor

Michael Carmody Colm

An infusion set check valve assembly includes a self-contained housing that defines inlet ports and an outlet port. The assembly also includes at least one check valve disposed within the self-contained housing between the outlet channel and at least one of the inlet ports. The at least one check valve is configured to open for a first fluid to flow from a first inlet to a patient line via an outlet channel while a second fluid also flows from a second inlet to the patient line via the outlet channel. The at least one check valve closes to prevent the first fluid from flowing to the patient line via the outlet channel while the second fluid flows to the patient line.

Check valve assembly

A check valve assembly is configured to couple to a first container that retains a first fluid and a second container that retains a second fluid. The check valve includes a fluid inlet housing including a first fluid inlet port defining a first fluid inlet channel, and a second fluid inlet port defining a second fluid inlet channel. A fluid outlet housing is coupled to the fluid inlet housing. The fluid outlet housing includes a fluid outlet port defining a fluid outlet channel. A first diaphragm is seated over the first fluid inlet channel. At least a portion of the first diaphragm is configured to unseat over the first fluid inlet channel to allow the first fluid to pass from the first fluid inlet channel into the fluid outlet channel. A second diaphragm is seated over the second fluid inlet channel. At least a portion of the second diaphragm is configured to unseat over the first fluid inlet channel to allow the second fluid to pass from the second fluid inlet channel into the fluid outlet channel.

A non-return valve, in particular for medical purposes, including a first hose connection housing, a second hose connection housing and a membrane disk which is made from flexible material. The membrane disk is arranged between the two hose connection housings and can be raised up from an annular valve seat in communication with an inlet space which is connected to an inlet passage. A medium-permeable formation which faces the membrane disk is arranged on the inlet side into the inlet space, supporting the membrane disk against overextension in the case of high return pressures.

Check valve, especially for medical applications

A check valve suitable for use with IV sets and the like provides an upstream filter preventing contamination from affecting the sealing of the check valve membrane. The filter may employ filter media that is integrally bonded to the housing of the filter providing simple and robust construction.

Growing community of inventors

Limerick, Ireland

Gerard Gabriel Henn