| 摘要 |
The catheter needle has a trifurcate connector (1) with first and second connecting sections coaxially aligned with each other. An infusion soft needle (2) is inserted on the first connecting section of the trifucate connector. The steel needle (3) is connected with the second connecting section of the trifucate connector. The holder body of the steel needle has a projecting post (313) formed with an air guiding hole (313a) for exhausting the air outside and making the liquid medicine smoothly flow into the soft needle. An infusion catheter is serially connected with a third connecting section of the trifucate connector for infusion of liquid medicine through the soft needle into the patient.
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