Valved male luer with vacuum feature
View Patent ↗A male luer connector device that attaches to any standard female luer valve to open a flow channel between the two luers. The male luer is comprised of a tubular housing element, a resilient member contained within the housing and extending within an inner tubular portion defined in the housing, a resilient member that extends within the inner tubular portion of the housing, and a valve member attached to the resilient member that seals the tubular portion. When the male luer is engaged with any standard female luer, a female luer connector device drives the resilient member of the male luer into a compressed position to open the forward end of the male luer and permit liquid flow between the luers.
1. A male luer medical fluid connector for engaging a female luer connector to open a flow channel through the male luer connector, the male luer connector comprising:
a male luer portion having a forward end for engaging a female connector;
a dual stage valve member located within the male luer portion, the valve member having an open position when the male luer portion is engaged with a female connector at which position fluid can flow through the male luer portion, and a closed position when the male luer portion is disengaged from a female connector at which position fluid is prevented from flowing through the male luer portion; and
a vacuum section that creates a relative vacuum within the forward end of the male luer portion;
wherein a first valve stage of the dual stage valve member is configured to isolate the vacuum section from upstream liquid before a second valve stage of the dual stage valve member closes.
2. The male luer medical fluid connector of claim 1 wherein the vacuum section is located between the first and second valve stages of the dual stage valve and is configured such that after the first valve stage closes, the vacuum section creates the relative vacuum thereby drawing liquid that may exist on the forward end into the forward end of the male luer portion before the second valve stage closes.
3. The male luer medical fluid connector of claim 2 wherein the vacuum section comprises a part of the valve element located between the first and second valve stages.
4. The male luer medical fluid connector of claim 3 wherein the vacuum section comprises a compressible cavity formed in the valve member, the cavity being compressed when the valve member is in the open position and the cavity being restored when the valve element is in the closed position.
5. The male luer medical fluid connector of claim 1 further comprising a resilient member that biases the valve member to the closed position.