A medical device can include a reservoir for creating a vacuum and storing fluid, an input port for receiving the fluid from a patient, an input valve that prevents the fluid from flowing from the reservoir through the input port, and a connector. The connector can have a locking interface that mates with a needleless syringe, and a valve that opens to permit flow of the fluid through the connector when connected to the needleless syringe but closes to prevent the flow when not connected. Other aspects are described and claimed.
