| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection needle that causes little pain when it is stuck into the skin, to prevent the skin from being hurt little, and to realize speedy recovery of the wound by the needle. SOLUTION: In the needle 1 having the top 3 of the needle that is made into one with a pipe 2 for sending liquid medicine, the tip end 3a of the top 3 of the needle is made almost in a sharp conical shape. Also, the exterior wall 3c of sleeve 3b that is extended from the top end 3a is made as its surface can be round-shaped toward the side wall 2a of the pipe 2 so as not to cut and hurt organic tissues when the needle 1 is inserted into an organism. |
