DEVICE AND METHOD FOR INJECTION Russian patent published in 2018 - IPC A61M5/34 

FIELD: medicine.

SUBSTANCE: group of inventions includes an injection device and a method for correcting contour skin defects and signs of aging by a device, relates to the field of medical technology and is intended for injections in the field of cosmetology. Injection device comprises a syringe, a needle assembly, and a viscous fluid. Syringe has a body with a piston located in it and an open distal end. Needle assembly comprises a cannula and a Luer tip connected to the distal end of the syringe, said Luer tip containing a bushing, the distal end of which supports the cannula, and the proximal end mating with the distal end of the syringe. Viscous fluid has a viscosity of from about 50,000 centipoises to about 500,000 centipoises, is located in the syringe body and is injected by means of said piston into the peripheral portion of the human or animal body through the cannula. Inner thread is located at the distal end of the syringe, and the external thread is located on the bushing. Internal thread and the external thread provide a mating connection between the bushing and the distal end of the syringe. Bushing comprises a retaining cavity limited by the inner surface of the bushing and comprising a shoulder formed on its inner surface in such a way that it reduces the dead zone in the holding cavity and thereby reduces the volume of the fluid that can not be introduced to the patient during the operation. Shoulder prevents separation of the bushing from the distal end of the syringe during injection of the viscous fluid.

EFFECT: invention makes it possible to exclude or substantially reduce the likelihood of separating the needle/syringe assembly during injection.

17 cl, 6 dwg, 1 tbl