Degradable uterine curette and preparation method thereof

Abstract

The present invention provides a degradable uterine curette and a preparation method. The degradable uterine curette is prepared by a degradable polymer main ingredient of a degradable substrate and an enhancer. The injection molding process includes that: a feed inlet is of 150-165 DEG C, a compression section is of 155-165 DEG C, a metering section is of 160-170 DEG C, a nozzle is of 165-175 DEG C, the mold temperature is 15-30 DEG C, the injection pressure is 70 Mpa for a first level, 80 Mpa for a second level and 55 Mpa for a third level, the molding cycle is 44-48 seconds, the dwell time is 0 seconds, and the screw rotation speed is 180 rpm. The performances of the degradable uterine curette are in line with requirements of the national industry standard YY0090-1992 uterine curette. The degradable uterine curette has clinically practical value. The used uterine curette does not need incineration and does not pollute the environment, can completely degrade by landfill in the natural environment, and achieves the purposes of low carbon, environmental protection, and energy saving.

Description

technical field [0001] The invention relates to the field of disposable medical devices, in particular to a degradable uterine curette and a preparation method. Background technique [0002] Present " uterine curette ", useful stainless steel or other metal materials are made through chrome-plated " metal uterine curette ", also useful plastics is made, for example the " disposable uterine curette " of patent No. 01227214.0. However, "metal uterine curettes" are expensive because they are cleaned after each use and then sterilized with high pressure. As we all know, disinfection is not as thorough as sterilization, especially in remote township health centers, where the disinfection equipment is relatively backward, so there are reports Some metal instruments have cross-infection of iatrogenic diseases due to poor disinfection. Therefore, many medical devices make them into disposable medical devices. The main purpose is to prevent cross-infection of iatrogenic diseases. Co...

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Problems solved by technology

However, "metal uterine curettes" are expensive because they are cleaned after each use and then sterilized with high pressure. As we all know, disinfection is not as thorough as sterilization, especially in remote township health centers, where the disinfection equipment is relatively backward, so there are reports Some metal instruments have cross-infection of iatrogenic diseases due to poor disinfection. Therefore, many medical devices make them into disposable medical devices. The main purpose is to prevent cross-infection of iatrogenic diseases. Compared with metal, it is cheaper, and is widely used due to its light weight and portability. However, decades of clinical practice has proved that disposable medical devices made of plastic have many problems: for example, criminals take the opportunity to illegally recycle , Trafficking and repeated use, but left more serious hidden dangers to cross-infection of diseases, and even lead to the spread of diseases such as sexually transmitted diseases, hepatitis B, etc., and the disposable medical devices after use (including disposable uterine curettes) need to be collected Incineration, and plastics will produce a lot of black smoke when incinerated, and at the same time release toxic and carcinogenic substances such as hydrogen chloride and dioxin, which seriously pollutes the environment and damages human health.

But so far, there is no research and report about the degradable uterine curette and its preparation method both at home and abroad.

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