Elastic lock catch type anti-reuse quantitative and microsyringe

• Main Authors: ZHANG YONGJUN, FU JING, ZHENG YAXIN, LU PANZHONG, LUO XIANCHUN
• Format: Patent
• Language: Chinese; English
• Published: 05.04.2022
• 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 utility model belongs to the field of medical instruments, provides an elastic lock catch type anti-reuse quantitative and micro-syringe, and aims to provide a syringe which not only can suck liquid medicine at one time and perform multi-point, micro and precise quantitative injection on the same patient, but also can be prevented from being reused. According to the main scheme, the device comprises a hollow cylinder (1-1) and a rubber plug (8) arranged at the top end of a core rod (9) and located in the hollow cylinder, lock teeth are arranged on the core rod (9), an outer sleeve (1-2) is arranged in the opening direction of the hollow cylinder (1-1), a core rod locking structure is arranged in the outer sleeve (1-2), and the core rod locking structure and the lock teeth arranged on the core rod (9) are locked by rotating the core rod locking structure. The core rod can only be pushed downwards and cannot be pulled upwards, and the injection dosage at one point is achieved when the core rod pushes one lo