High-pressure driven needleless injection device

• Main Authors: ZHU KUANKUAN, ZHU HAIXIN, DING CHUAN, YANG XIAOYI, LIU LI
• Format: Patent
• Language: Chinese; English
• Published: 02.09.2022
• 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 a high-pressure-driven needleless injection device which is used for delivering external liquid medicine to the intradermal space of an individual and comprises a cylinder body, an injection mechanism and a high-pressure driving assembly installed outside the cylinder body. One end of the cylinder body is connected with a first end cover, and the other end of the cylinder body is connected with a second end cover; the injection mechanism part is arranged in a space defined by the cylinder body, the first end cover and the second end cover and comprises a piston and a firing pin, the firing pin is nested in the piston, and the piston is nested in the cylinder body; the high-pressure driving assembly is communicated with the interior of the cylinder body and provides driving force for the injection mechanism. According to the needleless injection device, the piston and the firing pin are driven through high pressure, so that liquid medicine in the device is efficiently and rapidly driven