| 摘要 |
A medical hollow needle structured in accordance with the present invention, wherein the puncture resistance of a blade surface over the entire length in the puncture direction can be made substantially equal, and the patient's pain during needle puncture can be relieved due to a reduction in the peak level of puncture pain with the duration of sensory awareness of the puncture pain shortened by the use of the blade surface in a novel shape employing, in combination with each other, first to fourth inclined surfaces having specific inclination directions. Accordingly, the present invention provides a medical hollow needle with a blade surface in a novel shape whereby the puncture pain can be further reduced compared to needles with a conventional structure, and to provide a preferred method of producing such a medical hollow needle. |
