| 摘要 |
There is provided a pricking needle which causes less pain upon the pricking operation.
The front end portion of the pricking needle is defined by:
(1) a rear portion of an ellipse which is formed by cutting through the cylindrical member obliquely ahead from its backward;
(2) an isosceles triangle portion that has a central portion of a front edge of the rear portion of the ellipse as a base, that extends forward and obliquely downward from the central portion, and that extends more obliquely downward than a spreading direction of the rear portion of the ellipse;
(3) a rightward inclined surface portion and a leftward inclined surface portion, each including an oblique side of the isosceles triangle portion, a side portion of the front edge of the rear portion of the ellipse and a line segment which connects a front apex of the isosceles triangle portion and a distal end of the pricking needle, and extending from the right oblique side of the isosceles triangle obliquely downward; and
(4) a portion of a side face of the cylindrical member. |
