| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an injection needle capable of easy puncture into the skin and securely relieving the pain at the time of puncture. <P>SOLUTION: The injection needle 1 has blade faces 3 having first and second inclined faces 3a and 3c inclined to the axis S of a needle cannula 2 from one side D1 in the direction of diameter at the distal end of the needle cannula 2 toward the other side D2 in the diameter direction at the proximal end 2c of the needle cannula 2. A pair of notched faces 5, which configure a pair of linear cutting blades 3d crossing the second inclined face 3c at an acute angle as seen from a cross sectional face and crossing the distal end 2b of the needle tip 4 at an acute angle as seen from the top, are disposed at both outer peripheral edges on the distal end side of the second inclined face 3c and located on both sides of the center face, the plane including the axis S of the needle cannula 2 in the diameter direction, on the rear side of the second inclined face 3c on the distal end side of the needle tip 4. <P>COPYRIGHT: (C)2008,JPO&INPIT |
