| 摘要 |
A medical resin-made hollow needle 1 is provided with a distal-end part 3 having a puncturing end part 2, a large-diameter part 4 having a larger diameter than the distal-end part 3, a tapered part 6 provided between the large-diameter part and the distal-end part, and a hub part 5. The distal-end part is provided with a tapered puncturing end part 2 and a hole 7 communicating the inside and outside of the hollow needle and being provided a predetermined length toward the proximal end relative to a distal end 2a and a predetermined length toward the distal end relative to the tapered part. The distal-end part 3 has an overall length L of 7-14 mm and a maximum outside diameter R of 1.5-3.0 mm, the tapered part 6 has a length O of 0.3-4.7 mm and a taper angle (taper spread angle) of 10-50 degrees, and the large-diameter part 4 has a length N of 4 mm or greater and a distal-end outside diameter Q which is 0.6-3.0 mm larger than the maximum outside diameter R of the distal-end part 3. |
