AUTOMATIC INJECTION DEVICE WITH REDUCED RESIDUAL VOLUME

• Main Authors: DUGAND PASCAL, STAMP KEVIN
• Format: Patent
• Language: Chinese; English
• Published: 15.03.2019
• 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

Automatic injection device (22) comprising: an injection syringe (24) equipped with a syringe body (26) and with a piston rod mounted movably in this syringe body (26) so as to cover an injection stroke, a piston control member capable of changing between a configuration in which it is in engagement with the piston rod and a configuration in which it is disengaged from this piston rod, means for moving the piston control member between its two configurations with respect to the piston rod. The means for moving the control member between its two configurations comprise a camway (110) carried bya disengagement member (92) and a cam carried by the control member. The disengagement member (92) is movable with respect to the piston rod and the syringe body (26) after the end of the injection stroke, in such a way as to cause the camway (110) to interact with the cam. 本发明涉及种自动注射设备(22)，其包括：-设有注射器主体(26)和安装为在该注射器主体(26)中可移动以行进注射行程的活塞杆的注射器(24)；-可在以下构型之间演变的活塞操纵部件：与所述活塞杆接合的构型，和与该活塞杆分离的构型；-用于使得所述控制部件相对于所述活塞杆在其两个构型之间移动的移动装置