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Safe infusion apparatus and preparation method thereof

A safe and infusion device technology, applied in the field of medical devices, can solve the problems of infusion device damage, pipeline entanglement, leakage, etc., and achieve the effects of excellent mechanical properties, good bonding performance, and good compatibility

Active Publication Date: 2009-09-23
SHANDONG WEIGAO GROUP MEDICAL POLYMER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) The surface of the non-PVC infusion set is sticky, and the pipeline will be entangled during storage or use.
[0008] (2) The mechanical properties of non-polyvinyl chloride infusion materials are poor, and the prepared infusion set tubes are easily deformed or broken under stress
[0009] (3) The non-polyvinyl chloride infusion material has poor bonding performance, and the infusion set will be damaged and leak during use.
[0010] (4) The cost of raw materials and manufacturing of non-polyvinyl chloride infusion sets is much higher than that of polyvinyl chloride infusion sets, which is not conducive to popularization and use

Method used

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  • Safe infusion apparatus and preparation method thereof
  • Safe infusion apparatus and preparation method thereof

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Embodiment 1

[0034] Weigh A1 and B1 materials and add them to the double-layer co-extrusion blow molding unit respectively. The screw diameter of the extruder unit is 40mm, the length-to-diameter ratio is 36, and the head is the center feed of the inner layer and the side feed of the outer layer for co-extrusion. Blow-molded structure. Set the temperature of the feed section of the extruder for material A1 to 150-160°C, the temperature of the compression section to 160-170°C, and the temperature of the metering section to 170-180°C; set the temperature of the feed section of the extruder for material B1 to 140-155°C, The temperature of the compression section is 150-165°C, the temperature of the metering section is 160-175°C; the temperature of the co-extrusion blow molding head is set at 170-180°C.

[0035] After the polyurethane and polyvinyl chloride are dried, add them into the hopper of the polyurethane extruder and the hopper of the polyvinyl chloride extruder of the double-layer co-...

Embodiment 2

[0039] Weigh the materials A1 and B2 and add them to the double-layer co-extrusion blow molding unit. The screw diameter of the extrusion unit is 40 mm, and the aspect ratio is 36. Set the temperature of the feeding section of the extruder for A1 material to 150-160 °C, the temperature of the compression section to 160-170 °C, and the temperature of the metering section to 170-180 °C; set the temperature of the feeding section of the extruder for material B2 to 140-155 °C, The temperature of the compression section is 150-165 °C, the temperature of the metering section is 160-175 °C; the temperature of the co-extrusion blow molding head is set to 170-180 °C. After drying the polyurethane and polyvinyl chloride, the weight ratio of 1:3 was added into the polyurethane extruder hopper and the polyvinyl chloride extruder hopper of the double-layer co-extrusion blow molding unit, respectively. The feed rate ratio of the extruder was 1:2.4, and the blow-molded polyurethane / polyvinyl...

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Abstract

The invention provides a safe infusion apparatus and a preparation method thereof. The infusion apparatus comprises a dropping funnel and a perfusion tube; wherein, both the dropping funnel and the perfusion tube are made of polyurethane / polyvinyl chloride double-layer composite material; the inner surface layer of the dropping funnel made of the polyurethane / polyvinyl chloride double-layer composite material is a polyurethane layer, and the outer surface layer thereof is a polyvinyl chloride layer. The polyurethane / polyvinyl chloride double-layer composite material is prepared by a co-extrusion blow molding method, and the perfusion tube made of the polyurethane / polyvinyl chloride double-layer composite material is prepared by a co-extrusion method. The safe infusion apparatus can avoid the defect that the polyvinyl chloride perfusion tube absorbs micromolecules such as medicine, plasticizer and the like to pollute liquid medicine, and has the advantages of excellent mechanical property, easy bonding and assembling as well as low raw material cost.

Description

technical field [0001] The invention relates to a medical device, in particular to a safety infusion set and a preparation method. Background technique [0002] Polyvinyl chloride is cheap and has excellent comprehensive properties, and is widely used to make disposable infusion sets. With the extensive and in-depth clinical application and the development of related medical science and technology, it has been found that the polyvinyl chloride material itself has potential safety hazards, and there are also many defects in processing and use performance. A small amount of vinyl chloride monomer will be produced in the production or processing of polyvinyl chloride resin, which has been proved to be a carcinogen. In order to obtain soft polyvinyl chloride products, plasticizers must be used in processing, among which, bis(2-ethylhexyl phthalate) (DEHP) plasticizers are used the most, and such plasticizers will enter the drug liquid, and then enter the human body, endangerin...

Claims

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Application Information

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IPC IPC(8): A61M5/14B29C69/00B29C55/28B29C47/20B29C47/92B29C65/72B23P21/00B29C48/32B29C48/92
Inventor 栾世方殷敬华石恒冲
Owner SHANDONG WEIGAO GROUP MEDICAL POLYMER
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