Bigeminy bag for separating umbilical cord blood

The invention relates to a bigeminy bag for separating umbilical cord blood. The bag comprises a main bag and a transferring bag, wherein the main bag is communicated with a feed pipe and a transferring adapter, the feed pipe is provided with a feed control valve and a 0.22mu m filter; the transfer adapter is communicated with a blood inlet pipe and a transferring pipe connected in parallel; the blood inlet pipe is provided with a blood inlet control valve and a blood filtering net; the transferring pipe is communicated with the transferring bag; the transferring pipe is also provided with a transferring controlling valve; and the transferring adapter is provided with a sampling port, and the main bag is also provided with a cell outlet externally connected with a cell freezing bag. The bag in the invention has the advantages of simple integral structure, safety and high efficiency, is used under the condition of whole closeness, can effectively concentrate the storing volume of the candidate stem cell, can improve the recovery of the candidate stem cell as far as possible and reduce the separation cost.