US Patent 8679090 Medical connector with closeable luer connector

Some embodiments disclosed herein relate to a medical connector having a selectively closable male end portion. Embodiments are configured to open upon connection with a female connector or female tipped medical implement. Some embodiments include an internal cavity configured to change size as the connector moves from the open to closed or closed to open positions. In some embodiments, the connector is configured to draw fluid from the male end toward the other end of the connector as the connector closes.