Degradable material used for disposable umbilical cord clamp and preparation method

Abstract

The invention provides a degradable material used for a disposable umbilical cord clamp and a preparation method. The disposable umbilical cord clamp is prepared from a degradable high polymer main material and a reinforcing agent. An injection molding process adopted in the invention comprises that: a feed inlet is at a temperature of 150-165DEG C, a compression section is at a temperature of 155-165DEG C, a metering section is at a temperature of 160-170DEG C, and a nozzle is at a temperature of 165-175DEG C; a mold is at a temperature of 20-45DEG C; the injection pressure is 70Mpa at the first level, 80Mpa at the second level, and 55Mpa at the third level; the injection molding period is 41sec; the pressure-holding time is 0sec; and the screw rotation speed is 180 rpm / min. The obtained degradable disposable umbilical cord clamp has all performances in full compliance with the requirements of clinical use, needs no burning after use and is completely biodegradable in the natural environment by landfill, thus reaching the purposes of low carbon, energy saving, environmental protection and human health protection.

Description

technical field [0001] The invention relates to the field of degradable medical devices, in particular to a degradable material for a disposable umbilical cord clamp and a preparation method. Background technique [0002] The "umbilical cord clamp" originated from the fact that two metal surgical forceps clamped the front and rear sections of the umbilical cord and ligated them, and then cut them in the middle with surgical scissors. Later, it developed into a "disposable umbilical cord clamp" made of plastic to clamp the two sections. The umbilical cord is cut off with surgical scissors, such as the "umbilical cord clip" of patent No. 932020321 and patent No. 98208104.9, both of which are made of plastic, because the products are light in weight, easy to carry, and designed to prevent cross-infection of diseases for one-time use, etc. However, after more than ten years of clinical practice, it has been proved that umbilical cord clamps made of plastic have many problems: fo...

AI Technical Summary

Problems solved by technology

[0002] The "umbilical cord clamp" originated from the fact that two metal surgical forceps clamped the front and rear sections of the umbilical cord and ligated them, and then cut them in the middle with surgical scissors. Later, it developed into a "disposable umbilical cord clamp" made of plastic to clamp the two sections. The umbilical cord is cut off with surgical scissors, such as the "umbilical cord clip" of patent No. 932020321 and patent No. 98208104.9, both of which are made of plastic, because the products are light in weight, easy to carry, and designed to prevent cross-infection of diseases for one-time use, etc. However, after more than ten years of clinical practice, it has been proved that umbilical cord clamps made of plastic have many problems: for example, criminals take the opportunity to illegally recycle, sell and reuse them, leaving hidden dangers for cross-infection of diseases, and even It will lead to the spread of diseases such as hepatitis B, and the used umbilical cord clips need to be disposed of through centralized incineration, and plastics will generate a lot of black smoke when incinerated, and will release toxic and carcinogenic substances such as hydrogen chloride and dioxin, which seriously pollutes the environment , detrimental to human health

But so far, there is no research and report on degradable materials and preparation methods for disposable umbilical cord clamps at home and abroad.

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