| 摘要 |
The present invention relates to a catheter. The present invention has a tube inserted at the outside, and has a tip inserted by welding comprising: a head having one side streamlined at the foremost end of a spring coil discharging a liquid treatment; and a neck having the other side in a bar shape, wherein the neck of the tip is inserted into the spring coil and the head is combined with the spring coil by laser welding, to easily weld without using an extra welding agent, and in addition, an extra manual operation grinding the round surface of the tip is not required, after finishing the welding of the tip, to provide the effect of increasing the work efficiency and productivity. |
