| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid injecting needle that is steadily locked in the rubber stopper after the needle tube is pierced and that can suppress the generation of abnormality such as corings when the needle tube is inserted. SOLUTION: The fluid injection needle 1 comprises a recessed section 3 formed at the outer circumference of the needle tube, a corner section 5 which has a chamfer or a rounding process made at the angle and/or corner of the step 4 formed at the upper side and lower side of the recessed section 3, and the depth D of the recessed section 3 formed as 0.1 mm-2.0 mm, and the chamfer C or the rounding R of the corner section 5 formed as 0.1 mm or more. |
