| 摘要 |
<p>[PROBLEMS] To provide a synthetic resin bottle needle enabling the easy centesis by reducing thrusting resistance and an increase in flow for solution transfusion and blood transfusion. [MEANS FOR SOLVING PROBLEMS] In this bottle needle, a cutting face formed of a large number of faces is formed sharply at the needle point of a needle tube part to reduce the thrusting resistance and the intermediate part or the tip of the cutting face is opened to form a solution collecting hole and secure an opening area. The bottle needle is characterized in that the needle point is formed of a solid material and four cutting faces are formed at the needle point in the same manner as in an injection needle, the needle point is formed in a triangular shape forming a trigonal pyramid and the solution collecting hole is formed at the intermediate part of the cutting face, the tip of the needle point is opened to form the solution collecting hole and the needle point has a flat tip part and is formed in a semi-circular shape in cross section, or groove parts are formed, in a corrugated shape, in the cutting faces on the sides of two cutting faces opposed to each other.</p> |
