Patent ID: 8790328

Claim:
A transfer unit for a medical mixing system comprising: a first port adapted to receive a first container containing first contents, a second port adapted to receive a second container containing second contents, a third port adapted to receive a syringe, a first fluid pathway that enables fluid flow between the first port and the third port, a second fluid pathway that enables fluid flow between the third port and the second port, a third fluid pathway that enables fluid flow between the second port and the third port, a first flow control member disposed between the first port and the third port, enabling one-way fluid flow from the first port to the third port when a syringe is coupled to the third port, a second flow control member disposed between the third port and the second port, enabling one-way fluid flow from the third port to the second port when a syringe is coupled to the third port, and a third flow control member, wherein the third flow control member provides for user selective switching between a first state in which fluid flow is enabled between the first port and the third port via the first fluid pathway and between the third port and the second port via the second fluid pathway, and a second state in which fluid flow is enabled between the second port and the third port via the third fluid pathway but disabled between the first port and the third port; and the transfer unit for a medical mixing system further comprises a lock for ensuring that the third flow control member can only be manipulated when a syringe is coupled to the third port.