Dispensing needle head with long and narrow side opening

• Main Author: ZENG WENGUANG
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2017
• Subjects: BABY COMFORTERS; CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICALPURPOSES; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; DEVICES FOR RECEIVING SPITTLE; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGINGPHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL ORADMINISTERING FORMS; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

The utility model discloses a dispensing needle head with long and narrow side opening, including needle tubing and needle file, the needle point of needle tubing is the conical needle point of confined, and it has a long and narrow side opening to open on the pipe wall of needle tubing, the side opening is along the axial arrangement of needle tubing, and the preceding port of side opening is opened to be connected transition department of needle point circular conical surface with the needle tubing face of cylinder, and side opening length L1 and needle tubing diameter D's proportional relation is: L1=3D~6D, side opening width D1 and needle tubing diameter D's proportional relation is: D1=0.3D~0.5D. Because the preceding port position of side opening is equitable, it is clean with the liquid medicine suction very easily during the use, can not cut the rubber particle in addition. Because the length of side opening is enough and the width is narrower, when aspirating xiLin bottle, does not outwards take the