| 摘要 |
The tip of this injection needle is provided by forming an initial ground surface on the tip of a needle tube and thereafter forming at least two further ground surfaces. Defining the center plane as the plane perpendicular to the initial ground surface and including the central axis of the needle tube, there is no needle tip in the center plane, and the length (A) along the central axis of the blade surface formed by the initial ground surface and the at least two ground surfaces is 0.6-2.2 mm, the outer radius (L) of the needle tube is 0.18-0.6 mm, and the value of the outer diameter (L) of the needle tube divided by the length (A) is 0.265-0.325. |
