Environment-friendly energy-saving totally-degradable disposable injector and preparation method thereof

Abstract

The invention provides an environment-friendly energy-saving totally-degradable disposable injector and a preparation method thereof. All the parts of the disposable injector are formed by use of a single degradable polylactic acid substrate with molecular weight of 2 million. The injection molding process of the disposable injector comprises the following steps: setting the temperature of a feeding hole within the range of 150-165 DEG C, the temperature of a compression section within the range of 155-170 DEG C, the temperature of a metering section within the range of 160-175 DEG C and the temperature of a nozzle within the range of 150-180 DEG C, setting the temperature of a mold within the range of 10-40 DEG C, injecting under the pressure within the range of 50-85Mpa for 4-5 seconds, maintaining pressure for 0 second, and keeping the rotating speed of a screw within the range of 160-180r / min; the various indices of the obtained totally-degradable disposable injector completely conform to the requirements of the national standards of GB15810-2001 sterile hypodermic syringes for single use and the national industrial standards of YY0497-2005 sterile insulin syringe for single use; after being abandoned, the injectors can be degraded by microorganisms into H2O and CO2 under natural conditions without being burnt; the environment is not polluted, and the purposes of controlling pollution, reducing white pollution, protecting the environment and saving the energy are achieved.

Description

technical field [0001] The invention relates to the field of environmentally friendly and energy-saving biodegradable disposable medical devices, in particular to an environmentally friendly and energy-saving fully degradable disposable syringe and a preparation method thereof. Background technique [0002] Since the birth of disposable syringes, domestic and foreign manufacturers have used non-degradable plastics such as polystyrene or ABS to make them, and they have continued to this day. Plastic-made disposable syringes are cheaper than metal syringes, light in weight, and easy to carry. In particular, it is widely used for the advantages of preventing cross-infection of diseases. However, after decades of clinical practice, it has been proved that disposable syringes made of plastic have many problems: Cross-infection of diseases leaves hidden dangers, which can lead to the spread of diseases such as hepatitis B and AIDS. For this reason, a disposable self-destructing s...

AI Technical Summary

Problems solved by technology

[0002] Since the birth of disposable syringes, domestic and foreign manufacturers have used non-degradable plastics such as polystyrene or ABS to make them, and they have continued to this day. Plastic-made disposable syringes are cheaper than metal syringes, light in weight, and easy to carry. In particular, it is widely used for the advantages of preventing cross-infection of diseases. However, after decades of clinical practice, it has been proved that disposable syringes made of plastic have many problems: Cross-infection of diseases leaves hidden dangers, which will lead to the spread of diseases such as hepatitis B and AIDS

But so far, there is no research and report on the environmental protection and energy saving fully degradable disposable syringes and preparation methods made of high molecular weight polylactic acid alone at home and abroad.