Bidirectional low-resistance injector syringe and preparation method thereof

Abstract

The invention discloses a bidirectional low-resistance injector syringe and a preparation method thereof. The end, which is positioned in a cylinder is fixedly connected with a force bearing disc; a piston is ring-shaped and sleeves the outside of the force bearing disc, the outer side of the piston is in contact with the inner wall of the cylinder, a plurality of steel balls which are annularly and uniformly distributed are arranged in the annular piston, and the steel balls are connected with the piston rod through a connecting rod which penetrates through the force bearing disc; the pistonrod is provided with a resistance reduction body; the resistance reduction body comprises two mounting plates which are parallel to each other and face each other; a mounting shaft is fixedly connected between the two mounting plates; the mounting shaft is positioned at the end, which is close to the inner wall of the cylinder, of the mounting plate; and a roller is arranged on the mounting shaft.The problems that in the prior art, resistance in a pulling-up and liquid suction process of the injector syringe cannot be reduced, and injection resistance generated by deformation of the piston cannot be overcome are solved, in the pushing and pulling process of the injector syringe, the resistance can be reduced, and meanwhile, a purpose of overcoming the injection resistance generated by deformation of the piston is achieved.

Description

technical field [0001] The invention relates to the field of syringes, in particular to a two-way low-resistance syringe and a preparation method thereof. Background technique [0002] A syringe is a common medical device. As early as the 15th century, the Italian Catinelle proposed the principle of the syringe. The gas or liquid is withdrawn or injected mainly with a needle. Syringes are also used in medical equipment, containers, and scientific instruments such as some chromatography to inject through a rubber septum. Syringe barrels can be plastic or glass, and usually have graduations on them that show the volume of liquid in the syringe. The glass syringe can be sterilized by an autoclave, and the resistance of the glass syringe is small when used, which is convenient for medical staff to use and operate. But because plastic syringes are less expensive to dispose of, most modern medical syringes are made of plastic. At the same time, this disposable plastic syringe ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a two-way low-resistance syringe and its preparation method to solve the problems in the prior art that the resistance in the process of pulling up the syringe and absorbing liquid cannot be reduced, and the injection resistance caused by the deformation of the piston cannot be overcome. , to achieve the purpose of reducing the resistance during the push and pull of the syringe, and at the same time overcome the injection resistance caused by the deformation of the piston

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