A syringe consists of a cylinder and an inner wall, a large piston with a piston body and two or more deformation sealing devices, Each of the deformable sealing devices is supported by the inner wall of the cylinder, and seals a circular groove from the piston body to the inner wall of the cylinder, a hypodermic injection needle connected with one end of the cylinder from the outlet end of the cylinder to the outlet of the cylinder, and a container separated from the cylinder. Piston, a tube section for low skin needle accommodation,This paper introduces the insertion end of the tubular part of the needle, including a hyperplastic oil device in the hyperplastic oil device of the exit or hypodermic injection needle, and a protective end of the needle opposite to the insertion end of the needle, The tubular part includes a piston performance device, and the debris of the piston shows that the length of the debris is equal to or greater than that of the piston, The operating length of the cylinder is determined by the distance between the operating end of the cylinder and the output end of the cylinder, minus the size of the piston parallel to the vertical axis.Un inyector que comprende un cilindro con un eje longitudinal y una pared interior, un pistón macizo que presenta un cuerpo de pistón y dos o más elementos de sellado deformables, tales elementos de sellado deformables se apoyan cada uno en la pared interior del cilindro en una interfaz de apoyo y sellan una ranura anular entre el cuerpo del pistón y la pared interior del cilindro, una aguja hipodérmica unida a una salida en un extremo de salida de cilindro opuesto a un extremo de actuación del cilindro, y un vástago de pistón que presenta una sección tubular para el alojamiento de la aguja hipodérmica, presentando la sección tubular un extremo de inserción de aguja que comprende un dispositivo de engrane para el engrane de un dispositivo de engrane complementario de la salida o de la aguja hipodérmica, y un ex
