Medical injection needle and manufacturing method therefor
A technology for injection needles and manufacturing methods, applied in the field of medical injection needles and their manufacturing, capable of solving problems such as thread scratches, processing difficulties, and damage
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[0043] The manufacturing method of the medical injection needle of the present invention generally includes a rod body fixing step, a cutting step, a side cutting step, and a plane cutting step.
[0044] 1. Rod fixing steps
[0045] Such as Figure 7 As shown, in the rod fixing step, the solid disc-shaped rod 210 is integrally fixed to the top end of the hollow tube 110. At this time, preferably, the tube body 110 and the rod body 210 are made of the same kind of metal material, and the fixing method is preferably welding.
[0046] 2. Cutting steps
[0047] The cutting part 10 is formed by cutting from the top surface of the tube body 110 to which the rod body 210 is integrally fixed to the middle part of the rod body 210. At this time, the cutting portion 10 includes: an inclined portion 11, in the side view direction, the inclined portion 11 is formed to be inclined downward from the top by a predetermined angle and the bottom end is located below the central axis a of the tube 110...
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