Syringe

• Main Author: YIN JIANXIONG
• Format: Patent
• Language: Chinese; English
• Published: 02.12.2022
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

The invention discloses an injector which comprises a needle cylinder, a connector and a suction device. A rodless piston is slidably connected in the needle cylinder, one end of the connector is detachably connected with a cylinder opening, and the other end of the connector is communicated with a suction device through a pipeline. The suction device is used for extracting air from the cylinder opening, so that the piston slides towards the cylinder opening; a piston rod part of an injector piston is innovatively removed, the externally connected connector is matched with the suction device, and air at a cylinder opening is pumped out through the suction device, so that the piston is driven to complete liquid pumping work, the material of the piston rod is saved, and the cost and material loss of the injector are reduced; and a new thought is provided for the improvement of the injector. 本发明公开了一种注射器，包括针筒、连接头和抽吸装置；针筒内滑动连接有无杆的活塞，所述连接头一端与筒口可拆卸连接，连接头另一端通过管道与抽吸装置连通；所述抽吸装置用以将筒口空气抽出、使活塞向筒口方向滑动；本发明创新性的去除了注射器活塞的活塞杆部分