Energy-saving and environmental-friendly medical injector and material for piston thereof

Abstract

The invention provides an energy-saving and environmental-friendly medical injector which comprises a jacket, a piston and a core rod, wherein the ratio of the outside diameter and the inside diameter of the piston is ranged from 120 percent to 160 percent. Through the improvement to a piston structure, the invention greatly saves raw materials; thermoplastic elastomer materials used for manufacturing the piston ensures that all the physical indexes of the piston achieves the national standard; the invention also can efficiently lower the energy consumed to produce the piston originally in a production process, thereby precious energy resources are saved; and waste gas generated by burning a waste injector is also relatively reduced because of reduction of the raw materials.

Description

technical field [0001] The invention relates to an energy-saving and environment-friendly medical syringe and materials for its piston. Background technique [0002] Such as figure 1 As shown, the existing medical syringe includes a jacket 1 , a piston 3 and a core rod 2 , and the piston 3 cooperates with the jacket 1 and covers the top of the core rod 2 . Usually the ratio of the outer diameter of the piston to the inner diameter of the piston is 200%-250%. When the piston of this structure is installed on the core rod, it is relatively laborious, which is not conducive to the improvement of production speed. In addition, the consumption of raw materials is also relatively large, resulting in a waste of energy used in production, and when the retracting core rod is in a negative pressure state, the piston is easily separated from the core rod. Contents of the invention [0003] The purpose of the present invention is to provide an energy-saving and environment-friendly...

AI Technical Summary

Problems solved by technology

When the piston of this structure is installed on the core rod, it is more laborious, which is not conducive to the improvement of production speed

In addition, the consumption of raw materials is also large, resulting in a waste of energy used in production, and when the pull-back core rod is in a negative pressure state, the piston is easily separated from the core rod.

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