Blood bag sterile connection method and device used in the method

A blood bag sterile connection method, comprising the following steps:

• 1) placing blood bag tubes above a wire box of a blood bag sterile connection device, clamping positions to be cut of the blood bag tubes by using two vascular clamps, and simultaneously moving the two vascular clamps in opposite directions;
• 2) electrifying a composite metal wire of the blood bag sterile connection device for heating, and meanwhile, raising the wire box of the blood bag sterile connection device to cut the blood bag tubes by the composite metal wire of the wire box;
• 3) after the composite metal wire cuts the blood bag tubes, continuing to raise the wire box of the blood bag sterile connection device and retaining;
• meanwhile, aligning the blood bag tubes to be connected;
• 4) electrifying the composite metal wire of the blood bag sterile connection device for heating, meanwhile, moving the wire box of the blood bag sterile connection device downwards, and moving the two vascular clamps towards each other;
• rolling away the composite metal wire used during cutting under the action of a bobbin of the composite metal wire, and rolling out a new composite metal wire;
• 5) connecting the blood bag tubes via the composite metal wire, and simultaneously moving the two vascular clamps towards each other;
• and
• 6) returning the wire box of the blood bag sterile connection device to the initial position, opening the vascular clamps to take out the connected blood bag tubes, then clicking a reset key to return the vascular clamps to the initial positions, and thus completing the entire cutting and connecting process.