| 摘要 |
PROBLEM TO BE SOLVED: To provide a body fluid collection tool which can be handled and operated easily and safely with ease by a person from which blood is collected. SOLUTION: The piston body 11 is elastically returned upward by the 1st spring 13. The shot stop ring is inserted between the 1st and 2nd plunger rods 12, 15. The run-set mounting body 16 which is elastically returned upward by the 2nd spring 17, is arranged under the 2nd plunger rod 15 with furnishing the run-set B. The latch mechanism 20 restrains downward movement of the 2nd plunger rod 15, and successively restrains the piston body 11 and the 1st plunger rod 12 after downward movement, with restraining shotspring 14. The release mechanism 30 releases the restraining state of piston body 11, the 1st plunger rod 12, and the 2nd plunger rod 15. |
