| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the distal end of a dull needle from pressurizing a blood vessel wall over an incisure, and to smoothly advance the distal end part of the dull needle to the back of a puncture opening without strongly pressuring the edge of the puncture opening caused by the distal end part of the dull needle once inserted into the puncture opening. <P>SOLUTION: The dull needle 10 is inserted into a puncture route from the skin to a hypodermic shunt blood vessel, and is punctured to the shunt blood vessel. The dull needle 10 has an inclined end face 20a inclined with respect to the axis A of the needle, a projection plate 21 is projected from the distal end part 20b of the inclined end face 20a, and then the distal end part 21a of the projection plate 21 is formed in a circular arcuate edge. When the dull needle 10 is viewed from above while the dull needle 10 horizontally stands still and the inclined end face 20a and the projection plate 21 direct upwards, side edges 20c and 21c at left and right distal end parts following the circular arcuate distal end part 21a are each straight. <P>COPYRIGHT: (C)2013,JPO&INPIT |
