| 摘要 |
PROBLEM TO BE SOLVED: To automate injection and suction by driving a body portion provided with at least a drug solution inlet, a drug solution outlet and a drug solution storing chamber and a waste solution portion provided with at least a drug solution suction opening and a waste solution chamber by the same driving means and making the body portion perform solution delivery and causing the waste solution portion to suck a drug solution simultaneously. SOLUTION: When a drug solution is injected from a drug solution inlet 2 and stored in a drug solution storage chamber 3, a piston 4 is pushed down and a fixed load panel 5 is compressed and stores a driving force. The drug solution, when pressed by the extension of the fixed load panel 5, is delivered to a flow control tube 6 through a filter 7. At this time, when the piston 4 delivers the drug solution and moves, and a negative pressure occurs between the pistons 4 and 16, the piston 16 moves, and produces a negative pressure in a waste solution chamber 14, thereby sucking the drug solution from a suction catheter 18 connected to a drug solution suction opening 12 provided in the upper portion of the waste solution portion. After all the operations end, drug solution injection catheters 17 and 18 are removed and contents are disposed of. |
