| 摘要 |
Disclosed is a disposable array-type micro injection needle head, which comprises: a lower needle base (3), which is a columnar cylinder of which one end is provided with an opening and the other end is provided with a top cover and which is connected with an injecta reservoir (17); an upper needle base (2) which is arranged above the top cover of the lower needle base (3), and a cavity (15) is formed between the upper needle base (2) and the top cap; a through-hole for communicating the columnar cylinder and the cavity (15) is formed on the top cover, and an injecta extracting needle (4) is arranged in the through-hole; one end of the injecta extracting needle (4) is communicated with the cavity (15), and the other end is positioned in the columnar cylinder, and injecta is extracted from the reservoir (17) to the cavity (15); at least two needle tubes (1) are arranged on the upper needle base (2), and one end of each needle tubes (1) is a needle tip for puncturing and injecting the injecta, and the other end is arranged on the upper needle base (2) and is communicated with the cavity (15). The needle head can be used for the conventional insulin injection pen directly or formed a disposable pre-filling injector by arranging the injecta reservoir (17) in the columnar cylinder. By using a plurality of thin and short needle tubes (1) to inject simultaneously, medicines such as insulin and the like can be vertically injected beneath the skin of multiple parts of human bodies quickly, painlessly, safely and conveniently without leakage under the condition that skin is not pinched, so the hidden danger of injecting the medicines into muscles is avoided, and the using compliance and therapeutic effect of patients are improved. |
