Injector with anti-overflow function

• Main Authors: WEI XIJUAN, GU LIYA, THE INVENTOR HAS WAIVED THE RIGHT TO BE MENTIONED
• Format: Patent
• Language: Chinese; English
• Published: 19.06.2020
• 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 provides an injector with an anti-overflow function. A needle cylinder of the injector is designed into an oval shape; piston and push rod rotating connection, silica gel strips arearranged at the two ends, corresponding to the long axis diameter of the needle cylinder, of the push rod, when the position of the push rod needs to be fixed, the push rod is rotated in the directionwith the inner diameter gradually decreased, the silica gel strips are pressed on the inner wall of the needle cylinder, and locking of the push rod can be completed; when liquid is fed again, the rib plate with the silica gel strip of the push rod is rotated in the direction that the inner diameter is gradually increased, then the push rod can be loosened, the injector with the design has the advantages that the push rod position locking operation is simple and convenient, and liquid overflowing can be effectively avoided. 本实用新型提出的具有防溢液功能的注射器，通过将注射器的针筒设计成椭圆状，活塞与推杆转动连接，推杆对应针筒长轴径两端设有硅胶条，欲固定推杆位置时，通过向内径逐渐变小的方向旋转推杆，使得硅胶条压