Preparation method of medical blood collecting tube

A technology of blood collection tube and extrusion temperature, applied in the field of laboratory medicine, can solve problems such as intractability, inconvenience, environmental pollution, etc., and achieve the effect of resource recycling

Inactive Publication Date: 2017-06-06
JIAMUSI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing medical blood collection tubes, so as to solve the problem that the current vacuum blood collection tubes are generally made of non-degradable plastics, which are difficult to handle after being discarded, pollute the environment, and are very inconvenient.

Method used

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  • Preparation method of medical blood collecting tube

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for preparing a medical blood collection tube, the steps of the preparation method of the medical blood collection tube are as follows:

[0018] S1: Selected materials: select 80 parts of potato starch, 50 parts of polylactic acid, 18 parts of calcium carbonate, 1 part of starch modifier, 2 parts of water-resistant agent, and 2 parts of antioxidant;

[0019] S2: Mix and dissolve: add the calcium carbonate and potato starch selected in step S1 into the mixer and heat and stir for 25 minutes. Minutes, then add polylactic acid, stir and mix for 10 minutes, finally add water resistant agent and antioxidant, stir and mix for 3 minutes, add 100 ml of water to the obtained mixture and stir until all ingredients are completely dissolved in water and become milky Mixture, adjust the pH value to 5.5;

[0020] S3: Granulation: Add the milky mixture in step S2 to the twin-screw extruder for extrusion and granulation at three different extrusion temperatures. The temperat...

Embodiment 2

[0025] A method for preparing a medical blood collection tube, the steps of the preparation method of the medical blood collection tube are as follows:

[0026] S1: Selection of materials: select 90 parts of potato starch, 55 parts of polylactic acid, 20 parts of calcium carbonate, 2 parts of starch modifier, 3 parts of water resistance agent, and 3 parts of antioxidant;

[0027] S2: Mix and dissolve: Add the calcium carbonate and potato starch selected in step S1 into the mixer and heat and stir for 30 minutes, set the temperature at 40°C, then add the starch modifier into the mixer, stir and mix for 15 Minutes, then add polylactic acid, stir and mix for 13 minutes, finally add water resistant agent and antioxidant, stir and mix for 4 minutes, add 150 ml of water to the obtained mixture and fully stir until all ingredients are completely dissolved in water and become milky Mixture, adjust the pH value to 6;

[0028] S3: Granulation: Add the milky mixture in step S2 to the tw...

Embodiment 3

[0033] A method for preparing a medical blood collection tube, the steps of the preparation method of the medical blood collection tube are as follows:

[0034] S1: Selected materials: select 100 parts of potato starch, 60 parts of polylactic acid, 22 parts of calcium carbonate, 2 parts of starch modifier, 4 parts of water resistance agent, and 4 parts of antioxidant;

[0035] S2: Mixing and dissolving: Add the calcium carbonate and potato starch selected in step S1 into the mixer and heat and stir for 35 minutes. Minutes, then add polylactic acid, stir and mix for 16 minutes, finally add water resistant agent and antioxidant, stir and mix for 5 minutes, add 200 ml of water to the obtained mixture and stir until all ingredients are completely dissolved in water and become milky Mixture, adjust the pH value to 6.5;

[0036] S3: Granulation: Add the milky mixture in step S2 to the twin-screw extruder for extrusion and granulation at three different extrusion temperatures. The ...

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Abstract

The invention discloses a preparation method of a medical blood collecting tube, belonging to the technical field of laboratory medicine. The preparation method of the medical blood collecting tube comprises the following steps: S1, selecting materials; S2, mixing and dissolving; S3, granulating; S4, plasticizing and mold filling; S5, shaping and packaging; the medical blood collecting tube is prepared from degradable materials such as potato starch and polylactic acid, and auxiliary materials; the potential advantages of using the starch as a raw material to develop biodegradable plastics are as follows: the starch has complete biodegradability in various environments, and does not produce toxicity for the soil or air; the starch is renewable resource, so that the expansion of starch utilization is beneficial to the development of rural economy; the polylactic acid can be hydrolyzed into lactic acid and acetic acid in organisms and then becomes carbon dioxide and water by means of metabolism, and can be recycled when being heated to the melting point; when the polylactic acid is matched with the potato starch for use, the vacuum blood collecting tube can be completely degraded after being used and does not produce any residue which causes environmental pollution; therefore, the preparation method provided by the invention is cost-saving and environmentally-friendly, and can recycle the resource.

Description

technical field [0001] The invention relates to the technical field of laboratory medicine, in particular to a preparation method of a medical blood collection tube. Background technique [0002] As we all know, disposable vacuum blood collection tubes are composed of plastic tubes, stoppers, and label needle holders. According to the amount of venous blood required for the test, the corresponding vacuum degree is pre-pumped during the production process, and the venous blood sample is automatically quantitatively collected through the one-time use of the venous collection needle by using the negative pressure principle. However, the current vacuum blood collection tubes are generally not available. Made of degradable plastic, it is difficult to dispose of after being discarded, polluting the environment, which is very inconvenient. In view of the above-mentioned problems, the present invention designs a method for preparing medical blood collection tubes to solve the above...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L67/04C08K3/26A61B5/153
CPCC08L3/02A61B5/153C08L2201/06C08L2203/02C08L67/04C08K2003/265
Inventor 苏亚楠陈立强姚海涛马金丽隋小芳
Owner JIAMUSI UNIVERSITY
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