Soft PVC plastic in use for apparatus transfusions

A polyvinyl chloride and plastic technology, used in medical science, surgery, etc., can solve the problems of unfavorable preservation of red blood cells, hard blood bag body, easy rupture of the bag body, etc., to achieve reliable blood cell performance and reduce toxicity. Effect

Inactive Publication Date: 2005-11-16
威海威高创新有限公司
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Problems solved by technology

[0004] In Chinese patent 93102095.6, trimellitate tris (2-ethylhexyl) ester (TOTM) and citric acid ester are used together as a plasticizer, and the blood bag made is particularly excellent for preserving platelets, but for preserving red blood cells not favorable
[0005] Some people also use tris (2-ethylhexyl) trimellitate (TOTM) as a plasticizer to partially replace phthalate (DEHP) plasticizers, but the plasticizing efficiency of TOTM is low, and the resulting plastic The resulting blood bag is hard, and the bag is prone to rupture when subjected to centrifugation

Method used

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Embodiment Construction

[0013] Below in conjunction with embodiment the present invention will be further described:

[0014] The present invention is a kind of soft polyvinyl chloride plastic for blood transfusion equipment, the main body of the plastic used is polyvinyl chloride (PVC) resin with a degree of polymerization of 1700-2500, phthalate, trimellitate and citric acid Ester is a plasticizer, epoxy soybean oil (ESO), calcium-zinc composite stabilizer (CZ11) is a stabilizer, silicone oil is a lubricant, and the mass percentage of each component in the PVC polymer is: phthalic acid di(2 -Ethylhexyl ester (DEHP) 15%~40%, Tris(2-ethylhexyl) trimellitate (TOTM) 15%~40%, Acetyl tri-n-butyl citrate (ATBC) 5%~ 30%, epoxy soybean oil (ESO) 5% to 10%, calcium zinc composite stabilizer (CZ11) 1-2%, silicone oil 0.1-0.5%. The total amount of the plasticizer system is 40%-70% of the polymer mass.

[0015] The invention selects PVC resin with a high degree of polymerization to improve the tensile strengt...

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PUM

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Abstract

A soft polyvinyl chloride plastics for blood transfusion device, such as blood bag, is proportionally prepared from PVC resin, phthalate, trimellitate, citrate, epoxy soybean oil, composite Ca-P stabilizer and silicon oil. Its advantages are no erythrocatalysis, high stability of trimellitate, and low toxin.

Description

technical field [0001] The invention relates to a polymer material, in particular to an improved soft polyvinyl chloride plastic for blood transfusion equipment, and the polyvinyl chloride plastic is used to make blood and blood component storage bags. Background technique [0002] We know that the polyvinyl chloride (PVC) material itself is relatively hard and does not have the conditions for making blood bags, but after adding plasticizers to the PVC material, PVC becomes soft and elastic, easy to form and process, and can be made into various blood bags. shaped medical products. Therefore, it has become a widely used material for making blood bags. Plasticizers play a vital role in PVC blood bag materials. The use of phthalate (DEHP) plasticizers used in traditional blood bags has been proven to have a certain damage to the human liver, and its use is limited, but US Patent No. 4,222,379 points out that DEHP inhibits hemolysis. Therefore, the use of low-elution plastic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06
Inventor 殷敬华李忠志戚国祥
Owner 威海威高创新有限公司
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