| 摘要 |
PROBLEM TO BE SOLVED: To improve productivity by eliminating complicated work such as fixing a regulating part to regulate the depth of puncture of a needle tube to the needle tube.SOLUTION: The injection needle assembly 1 includes the needle tube 2 having a needle tip which can be inserted into a living body at one end, and a hub 3 for holding at least part of the other end side of a swelling part of the needle tube 2. The needle tube 2 has the annular swelling part 5 continuing in the circumferential direction. The swelling part 5 is formed by a process of pressing the needle tube 2 in the axial direction. |
