Electric dosage-adjustable automatic needleless injector

• Main Authors: ZHANG ZHONGRAN, YUE CAIXU, SHEN YUHUI, WANG YIWEN, LIN YONGZHI
• Format: Patent
• Language: Chinese; English
• Published: 16.02.2011
• 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 utility model discloses an electric dosage-adjustable automatic needleless injector. The conventional injector completes penetrated injection through the injection needle, so infection easily occurs. The utility model comprises a casing (1); a regulating end cover (2) is connected to the front side of the casing and connected with a regulating stem (4) through a regulating sleeve (3), a striker (5) is arranged in the regulating stem, a regulating ring (6) is connected to the outer side of the regulating stem, the regulating stem is connected with an ampoule bottle (7) in a threaded way, an injection piston (8) is arranged in the ampoule bottle; a transmission mechanism is arranged in the casing and connected with a strike piston (9), the strike piston is connected with a stopper (11) positioned on the casing through a spring (10), the strike piston is positioned on the same axis as the injection piston and the striker. The utility model is used as medical instrument.