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CN101537216B - Safe infusion apparatus and preparation method thereof - Google Patents

Safe infusion apparatus and preparation method thereof Download PDF

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Publication number
CN101537216B
CN101537216B CN2009100668534A CN200910066853A CN101537216B CN 101537216 B CN101537216 B CN 101537216B CN 2009100668534 A CN2009100668534 A CN 2009100668534A CN 200910066853 A CN200910066853 A CN 200910066853A CN 101537216 B CN101537216 B CN 101537216B
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polyurethane
polyvinyl chloride
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extruder
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CN101537216A (en
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栾世方
殷敬华
石恒冲
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Changchun Institute of Applied Chemistry of CAS
Shandong Weigao Group Medical Polymer Co Ltd
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Changchun Institute of Applied Chemistry of CAS
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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

A kind of safe infusion apparatus and preparation method
Technical field
The present invention relates to a kind of medical apparatus and instruments, be specifically related to a kind of safe infusion apparatus and preparation method.
Background technology
The polrvinyl chloride low price, high comprehensive performance generally is used to make disposable transfusion device.Along with clinical practice extensively and profoundly with the relevant medical science and technology development, it is found that there is potential safety hazard in pvc material itself, processing and serviceability on also have many defectives.Corvic can produce a spot of Vinyl Chloride Monomer in producing or processing, this chemical compound has been proved to be carcinogen.In order to obtain the soft PVC goods, must use plasticizer in the processing, wherein, (DEHP) use of plasticizer is maximum for phthalic acid two (2-Octyl Nitrite), and this class plasticizer can enter medicinal liquid, and enters human body thereupon, is detrimental to health.For preventing that polrvinyl chloride from degrading in the course of processing, the chemical compound that adds elements such as leaded, zinc and barium is usually made heat stabilizer, and in use, the heavy metal in these heat stabilizers may enter human body.The waste treatment difficulty of polrvinyl chloride medical disposable material is buried for a long time and is not degraded, and burns then to produce hydrogen chloride with toxic gas such as bioxin, contaminated environment.Polrvinyl chloride adds can decompose the generation hydrogen chloride gas man-hour, not only corrosion processing equipment, and threat operator ' s health.
Residual Vinyl Chloride Monomer, the DEHP plasticizer and the heat stabilizer of interpolation are not to be chemically bonded on the polrvinyl chloride molecule in the pvc material, the polrvinyl chloride transfusion device in use, these micromolecule can enter medicinal liquid by modes such as diffusion, extractions, and then enter human body, are detrimental to health.In addition, because polrvinyl chloride is a polar material, the polrvinyl chloride transfusion device of preparation has strong adsorption to the part medicine, directly causes curative effect of medication to descend, and not only wastes medicine, also can make drug dose inaccurate, incurs loss through delay the patients ' recovery time.
In view of the problem of pvc material and transfusion device existence thereof, the new material that all on the research and development price, can contend with both at home and abroad, performance satisfies the transfusion device instructions for use with polrvinyl chloride.
China's utility model patent 200420052781.0 discloses a kind of non-PVC transfusion device; China's utility model patent 200720029591.0 discloses a kind of disposable use TPO transfusion device; Chinese invention patent 200510014749.2 discloses a kind of radiation modified polyolefinic thermoplastic elastomer blending resin, and this resin can be used for replacing the PVC material that traditional disposable transfusion device adopts.
So far, there are many deficiencies in non-PVC transfusion device material and the transfusion device thereof developed, can reduce:
Phenomenons such as pipeline entanglement can appear in (1) non-PVC transfusion device surfaces of tacky in preservation or use.
(2) mechanical property of non-PVC transfusion material is relatively poor, and the transfusion device pipeline of preparation is in stressed easy deformation or fracture down.
(3) adhesive property of non-PVC transfusion material is not good, and transfusion device in use breakage, the phenomenon of leakage can occur.
(4) non-PVC transfusion device raw material and manufacturing cost are unfavorable for promoting the use of far above the polrvinyl chloride transfusion device.
Summary of the invention
Safety problem at the polrvinyl chloride transfusion device exists the invention provides a kind of safe infusion apparatus and preparation method.
A kind of safe infusion apparatus provided by the invention comprises dropping funnel and tube for transfusion; Described dropping funnel and tube for transfusion are the manufacturing of urethane/polyvinyl chloride double-layer composite material;
Described urethane/polyvinyl chloride double-layer composite material dropping funnel interior surface layers is a layer of polyurethane, and outer surface layer is a polyvinyl chloride layer, and layer of polyurethane is 1 with the thickness ratio of polyvinyl chloride layer: 2-5; The optimization polyurethane layer thickness is 0.1-0.4mm, and the polrvinyl chloride layer thickness is 0.4-0.8mm;
Described urethane/polyvinyl chloride double-layer composite material dropping funnel profile as shown in Figure 1.Among Fig. 1,1. polyurethane internal layer; 2. polrvinyl chloride skin
The interior surface layers of described urethane/polyvinyl chloride two-layer compound tube for transfusion is a layer of polyurethane, and outer surface layer is a polyvinyl chloride layer, and layer of polyurethane is 1 with the thickness ratio of polyvinyl chloride layer: 2-8; The optimization polyurethane layer thickness is 0.05-0.35mm, and the polrvinyl chloride layer thickness is 0.35-0.80mm;
Described urethane/polyvinyl chloride double-layer composite material tube for transfusion profile as shown in Figure 2.Among Fig. 2,3. layer of polyurethane; 4. polyvinyl chloride layer
Described polyurethane is Polyurethane Thermoplastic Elastomer, its melt flow rate (MFR) 1-10, shore hardness≤80, hot strength 〉=13MPa, elongation at break 〉=250%;
Described polrvinyl chloride is plastifying flexible PVC, its shore hardness≤80, hot strength 〉=13MPa, elongation at break 〉=250%.
Below introduce a kind of preparation method of safe infusion apparatus, comprise the preparation method of urethane/polyvinyl chloride double-layer composite material dropping funnel and urethane/polyvinyl chloride double-layer composite material tube for transfusion.
(1) urethane/polyvinyl chloride double-layer composite material dropping funnel adopts the coextrusion blow moulding, its step and condition are as follows: adopt double-layer coextrusion blowing unit, this unit is made up of two extruders and a co-extruding blow moulding machine head, and described co-extruding blow moulding machine head adopts the outer side-fed co-extruding blow moulding machine of internal layer central feeding head, ectonexine all the core rod type co-extruding blow moulding machine head or the outer all central feeding co-extruding blow moulding machine heads of internal layer of charging from the side;
The polyurethane extruder temperature is: feed zone 140-160 ℃, and compression section 150-180 ℃, metering section 160-190 ℃; The polyvinyl-chloride use extruder temperature is: feed zone 130-150 ℃, and compression section 150-170 ℃, metering section 160-180 ℃; Co-extruding blow moulding machine head temperature is 160-180 ℃;
After polyurethane and polrvinyl chloride oven dry, by weight adding in the polyurethane extruder hopper and polrvinyl chloride extruder hopper of double-layer coextrusion blowing unit respectively, regulate the die orifice of co-extruding blow moulding machine head and the thickness of air blowing parameter change urethane/polyvinyl chloride double-layer composite material, change polyurethane extruder and polrvinyl chloride extruder feed rate than layer of polyurethane and the polrvinyl chloride layer thickness ratio of regulating double-layer composite material, urethane/polyvinyl chloride double-layer composite material vane cooling with blowing, draw by carry-over pinch rolls, collect with the rustless steel pallet;
(2) urethane/polyvinyl chloride double-layer composite material tube for transfusion adopts coetrusion, and its step and condition are as follows: adopt the bimetallic tube unit; This unit is made up of two extruders and a coextrusion bimetallic tube head, and coextrusion bimetallic tube head adopts all outer all central feeding coextrusion bimetallic tube heads of charging core rod type coextrusion bimetallic tube head or internal layer from the side of the outer side-fed coextrusion of internal layer central feeding bimetallic tube head, ectonexine;
The polyurethane extruder temperature is: feed zone 140-170 ℃, and compression section 160-190 ℃, metering section 170-200 ℃; The polyvinyl-chloride use extruder temperature is: feed zone 140-160 ℃, and compression section 160-180 ℃, metering section 170-190 ℃; Coextrusion bimetallic tube head temperature is 170-190 ℃;
After polyurethane and polrvinyl chloride oven dry, by weight adding in the polyurethane extruder hopper and polrvinyl chloride extruder hopper of coextrusion bimetallic tube unit respectively, the die orifice change of adjusting coextrusion bimetallic tube head) thickness of urethane/polyvinyl chloride double-layer composite material tube for transfusion, change polyurethane extruder and polrvinyl chloride extruder feed rate than the thickness ratio of regulating layer of polyurethane and polyvinyl chloride layer, with what extrude) urethane/polyvinyl chloride double-layer composite material tube for transfusion cools off by bosh, draw by carry-over pinch rolls, collect with the rustless steel pallet;
With solvent adhesive with urethane/polyvinyl chloride double-layer composite material dropping funnel, urethane/polyvinyl chloride double-layer composite material tube for transfusion, wear a bottle pin and link together, accessories such as assembling fluid flow regulator and intravenous needle make safe infusion apparatus.
Beneficial effect: safe infusion apparatus provided by the invention, comprise urethane/polyvinyl chloride double-layer composite material dropping funnel and urethane/polyvinyl chloride double-layer composite material tube for transfusion, the inner surface of two-layer composite dropping funnel and double-layer composite material tube for transfusion is layer of polyurethane.The surface that this safe transfusion system contacts with medicinal liquid all is non-PVC materials, and the plasticizer, heat stabilizer and the Vinyl Chloride Monomer that have solved in the polrvinyl chloride transfusion device enter medicinal liquid, the problem that is detrimental to health.Overcome polrvinyl chloride transfusion device and drug reaction or absorption medicine simultaneously, made the prescription medication inaccurate, incured loss through delay the defective of rehabilitation duration.Polyurethane and pvc material that this safe transfusion system adopts have the compatibility preferably, preparation double-layer composite material dropping funnel and tube for transfusion interlaminar bonding performance are better, and good mechanical performance is fit to high-frequency welding, cost is far below non-PVC material, and large-scale promotion application suits.
Description of drawings
Fig. 1 is the profile of urethane/polyvinyl chloride double-layer composite material dropping funnel dropping funnel wall.
Fig. 2 is a urethane/polyvinyl chloride double-layer composite material tube for transfusion profile.
The specific embodiment
The numbering and the physical index of embodiment material therefor see table 1 for details.
Table 1
The component code name Trade name Model Manufacturer Hardness (Shao Shi A)
A1 Polyurethane S-6558 Hensel steps (China) company limited ?77
A2 Polyurethane E-4675 Hensel steps (China) company limited ?70
B1 Polrvinyl chloride S-1000 Qilu Petrochemical limited company ?78
B2 Polrvinyl chloride DS01 Big electric plastics (Shanghai) Co., Ltd. ?77
Embodiment 1
Take by weighing A1, B1 material, add respectively in the double-layer coextrusion blowing unit, the screw diameter of extruding unit is 40mm, and draw ratio is 36, and head is the outer side-fed coextrusion of an internal layer central feeding blow-molded plastic.Set 150-160 ℃ of extruder feed zone temperature of A1 material, compression section temperature 160-170 ℃, 170-180 ℃ of metering section temperature; Set 140-155 ℃ of extruder feed zone temperature of B1 material, compression section temperature 150-165 ℃, 160-175 ℃ of metering section temperature; Set 170-180 ℃ of co-extruding blow moulding machine head temperature.
After polyurethane and polrvinyl chloride oven dry, weight ratio is respectively to add at 1: 4 in the polyurethane extruder hopper and polrvinyl chloride extruder hopper of double-layer coextrusion blowing unit, setting polyurethane extruder, vinyl chloride extruder feed rate ratio are 1: 3.5, urethane/polyvinyl chloride double-layer composite material vane cooling with blowing, draw by carry-over pinch rolls, collect with the rustless steel pallet;
Take by weighing A2, B1 material respectively, add in the coextrusion bimetallic tube unit, the screw diameter of extruding unit is 40mm, and draw ratio is 36, and head is all charging core rod type coextrusion two-layer pipes from the side of ectonexine.Set 150-165 ℃ of extruder feed zone temperature of A2 material, compression section temperature 160-175 ℃, 170-185 ℃ of metering section temperature; Set 140-160 ℃ of extruder feed zone temperature of B1 material, compression section temperature 150-170 ℃, 165-175 ℃ of metering section temperature; Set 170-185 ℃ of coextrusion bimetallic tube head temperature.After polyurethane and polrvinyl chloride oven dry, weight ratio be set the polyurethane extruder in 1: 5 polyurethane and the polrvinyl chloride polyurethane extruder hopper that adds coextrusion bimetallic tube unit respectively and the polrvinyl chloride extruder hopper, vinyl chloride extruder feed rate ratio is 1: 4, the urethane/polyvinyl chloride double-layer composite material tube for transfusion of extruding is cooled off by bosh, draw by carry-over pinch rolls, collect with the rustless steel pallet;
With solvent adhesive with urethane/polyvinyl chloride double-layer composite material, the urethane/polyvinyl chloride double-layer composite material tube for transfusion of cutting, wear a bottle pin and link together, accessories such as assembling fluid flow regulator and intravenous needle make safe infusion apparatus.
Embodiment 2
Take by weighing A1, B2 material, add respectively in the double-layer coextrusion blowing unit, the screw diameter of extruding unit is 40mm, and draw ratio is 36.Set 150-160 ℃ of extruder feed zone temperature of A1 material, compression section temperature 160-170 ℃, 170-180 ℃ of metering section temperature; Set 140-155 ℃ of extruder feed zone temperature of B2 material, compression section temperature 150-165 ℃, 160-175 ℃ of metering section temperature; Set 170-180 ℃ of co-extruding blow moulding machine head temperature.After polyurethane and polrvinyl chloride oven dry, weight ratio is respectively to add at 1: 3 in the polyurethane extruder hopper and polrvinyl chloride extruder hopper of double-layer coextrusion blowing unit, setting polyurethane extruder, vinyl chloride extruder feed rate ratio are 1: 2.4, urethane/polyvinyl chloride double-layer composite material vane cooling with blowing, draw by carry-over pinch rolls, collect with the rustless steel pallet.
Take by weighing A2, B2 material, add respectively in the coextrusion bimetallic tube unit, the screw diameter of extruder is 40mm, and draw ratio is 36.Set 155-170 ℃ of extruder feed zone temperature of A2 material, compression section temperature 165-180 ℃, 175-190 ℃ of metering section temperature; Set 150-165 ℃ of extruder feed zone temperature of B2 material, compression section temperature 155-175 ℃, 165-185 ℃ of metering section temperature; Set 170-185 ℃ of coextrusion bimetallic tube head temperature.After polyurethane and polrvinyl chloride oven dry, weight ratio be set the polyurethane extruder in 1: 3 polyurethane and the polrvinyl chloride polyurethane extruder hopper that adds coextrusion bimetallic tube unit respectively and the polrvinyl chloride extruder hopper, vinyl chloride extruder feed rate ratio is 1: 2.4, with cooling off by bosh of extruding to urethane/polyvinyl chloride double-layer composite material tube for transfusion, draw by carry-over pinch rolls, collect with the rustless steel pallet.
With solvent adhesive with urethane/polyvinyl chloride double-layer composite material dropping funnel, urethane/polyvinyl chloride double-layer composite material tube for transfusion, wear a bottle pin and link together, accessories such as assembling fluid flow regulator and intravenous needle make safe infusion apparatus.

Claims (3)

1.一种安全型输液器，包括滴斗和输液管，其特征在于，所述的滴斗和输液管均为聚氨酯/聚氯乙烯双层复合材料制造；1. A safety infusion set, comprising a dripping funnel and a transfusion tube, characterized in that, the dripping funnel and the transfusion tube are made of polyurethane/polyvinyl chloride double-layer composite material; 所述的聚氨酯/聚氯乙烯双层复合材料滴斗内表面层为聚氨酯层，外表面层为聚氯乙烯层，聚氨酯层与聚氯乙烯层的厚度比为1∶2-5；The inner surface layer of the polyurethane/polyvinyl chloride double-layer composite dropping funnel is a polyurethane layer, the outer surface layer is a polyvinyl chloride layer, and the thickness ratio of the polyurethane layer to the polyvinyl chloride layer is 1:2-5; 所述的聚氨酯/聚氯乙烯双层复合输液管的内表面层为聚氨酯层，外表面层为聚氯乙烯层，聚氨酯层与聚氯乙烯层的厚度比为1∶2-8；The inner surface layer of the polyurethane/polyvinyl chloride double-layer composite infusion tube is a polyurethane layer, the outer surface layer is a polyvinyl chloride layer, and the thickness ratio of the polyurethane layer to the polyvinyl chloride layer is 1:2-8; 所述的聚氨酯为热塑性聚氨酯弹性体，其熔体流动速率1-10，邵氏硬度≤80，拉伸强度≥13MPa，断裂伸长率≥250％；The polyurethane is a thermoplastic polyurethane elastomer with a melt flow rate of 1-10, a Shore hardness of ≤80, a tensile strength of ≥13MPa, and an elongation at break of ≥250%; 所述的聚氯乙烯为增塑的软聚氯乙烯，其邵氏硬度≤80，拉伸强度≥13MPa，断裂伸长率≥250％；The polyvinyl chloride is plasticized soft polyvinyl chloride, its Shore hardness ≤ 80, tensile strength ≥ 13MPa, elongation at break ≥ 250%; 所述的一种安全型输液器的制备方法包括聚氨酯/聚氯乙烯双层复合材料滴斗和聚氨酯/聚氯乙烯双层复合材料输液管的制备方法：The preparation method of a kind of safety infusion set includes the preparation method of polyurethane/polyvinyl chloride double-layer composite material dropping funnel and polyurethane/polyvinyl chloride double-layer composite material infusion tube: (1)聚氨酯/聚氯乙烯双层复合材料滴斗采用共挤出吹塑法，其步骤和条件如下：采用双层共挤吹塑机组，该机组由两台挤出机和一个共挤出吹塑机头组成，所述的共挤出吹塑机头采用内层中心进料外层侧面进料共挤出吹塑机头、内外层均从侧面进料的芯棒式共挤出吹塑机头或内层外层均中心进料共挤出吹塑机头；(1) Polyurethane/polyvinyl chloride double-layer composite dropper adopts co-extrusion blow molding method, the steps and conditions are as follows: a double-layer co-extrusion blow molding unit is used, which consists of two extruders and a co-extrusion The blow molding head is composed of a co-extrusion blow molding head, the co-extrusion blow molding head adopts a mandrel-type co-extrusion blow molding head in which the inner layer is centrally fed and the outer layer is fed from the side. Co-extrusion blow molding head with center feed for both inner and outer layers; 聚氨酯用挤出机温度为：进料段140-160℃，压缩段150-180℃，计量段160-190℃；聚氯乙烯用挤出机温度为：进料段130-150℃，压缩段150-170℃，计量段160-180℃；共挤出吹塑机头温度为160-180℃；The extruder temperature for polyurethane is: feed section 140-160°C, compression section 150-180°C, metering section 160-190°C; extruder temperature for polyvinyl chloride: feed section 130-150°C, compression section 150-170°C, metering section 160-180°C; co-extrusion blow molding head temperature 160-180°C; 将聚氨酯和聚氯乙烯烘干后，按重量比分别加入双层共挤吹塑机组的聚氨酯挤出机料斗和聚氯乙烯挤出机料斗内，调节共挤出吹塑机头的模口和吹气参数改变聚氨酯/聚氯乙烯双层复合材料的厚度，改变聚氨酯挤出机和聚氯乙烯挤出机进料速率比调节双层复合材料的聚氨酯层和聚氯乙烯层厚度比，将吹塑的聚氨酯/聚氯乙烯双层复合材料风环冷却，由牵引辊引出，用不锈钢托盘收集；After the polyurethane and polyvinyl chloride are dried, they are respectively added to the polyurethane extruder hopper and the polyvinyl chloride extruder hopper of the double-layer co-extrusion blow molding unit according to the weight ratio, and the die mouth and the polyvinyl chloride extruder of the co-extrusion blow molding head are adjusted. The blowing parameter changes the thickness of the polyurethane/polyvinyl chloride double-layer composite material, changes the feed rate ratio of the polyurethane extruder and the PVC extruder, adjusts the thickness ratio of the polyurethane layer and the PVC layer of the double-layer composite material, and blows Plastic polyurethane/polyvinyl chloride double-layer composite air ring cooling, drawn out by traction rollers, collected by stainless steel trays; (2)聚氨酯/聚氯乙烯双层复合材料输液管采用共挤出法，其步骤和条件如下：采用双层管机组；该机组由两台挤出机和一个共挤出双层管机头组成，共挤出双层管机头采用内层中心进料外层侧面进料共挤出双层管机头、内外层均从侧面进料芯棒式共挤出双层管机头或内层外层均中心进料共挤出双层管机头；(2) Polyurethane/polyvinyl chloride double-layer composite infusion tube adopts co-extrusion method, and its steps and conditions are as follows: a double-layer tube unit is used; the unit consists of two extruders and a co-extrusion double-layer tube head Composition, the co-extrusion double-layer pipe head adopts the inner layer center feed and the outer layer side feed co-extrusion double-layer pipe head, the inner and outer layers are fed from the side mandrel-type co-extrusion double-layer pipe head or the inner layer Co-extrusion double-layer pipe head with center feed for both layers and outer layers; 聚氨酯用挤出机温度为：进料段140-170℃，压缩段160-190℃，计量段170-200℃；聚氯乙烯用挤出机温度为：进料段140-160℃，压缩段160-180℃，计量段170-190℃；共挤出双层管机头温度为170-190℃；The extruder temperature for polyurethane is: feed section 140-170°C, compression section 160-190°C, metering section 170-200°C; PVC extruder temperature: feed section 140-160°C, compression section 160-180°C, metering section 170-190°C; co-extrusion double-layer pipe head temperature 170-190°C; 将聚氨酯和聚氯乙烯烘干后，按重量比分别加入共挤出双层管机组的聚氨酯挤出机料斗和聚氯乙烯挤出机料斗内，调节共挤出双层管机头的模口改变)聚氨酯/聚氯乙烯双层复合材料输液管的厚度，改变聚氨酯挤出机和聚氯乙烯挤出机进料速率比调节聚氨酯层和聚氯乙烯层的厚度比，将挤出的)聚氨酯/聚氯乙烯双层复合材料输液管通过冷却水槽冷却，由牵引辊引出，用不锈钢托盘收集；After the polyurethane and polyvinyl chloride are dried, they are respectively added to the hopper of the polyurethane extruder and the hopper of the polyvinyl chloride extruder of the co-extrusion double-layer pipe unit according to the weight ratio, and the die mouth of the co-extrusion double-layer pipe head is adjusted Change) the thickness of the polyurethane/polyvinyl chloride double-layer composite infusion tube, change the feed rate ratio of the polyurethane extruder and the polyvinyl chloride extruder to adjust the thickness ratio of the polyurethane layer and the polyvinyl chloride layer, and the extruded) polyurethane / PVC double-layer composite material infusion tube is cooled by cooling water tank, led out by traction roller, and collected by stainless steel tray; 用溶剂胶将聚氨酯/聚氯乙烯双层复合材料滴斗、聚氨酯/聚氯乙烯双层复合材料输液管、穿瓶针连接在一起，组装液体流量调节器和静脉针等配件，制得安全型输液器。Use solvent glue to connect the polyurethane/polyvinyl chloride double-layer composite material dropping funnel, polyurethane/polyvinyl chloride double-layer composite material infusion tube, and bottle-piercing needle together, and assemble the accessories such as liquid flow regulator and venous needle to make a safe type infusion set. 2.如权利要求1所述的一种安全型输液器，其特征在于，所述的聚氨酯/聚氯乙烯双层复合材料滴斗，聚氨酯层厚度为0.1-0.4mm，聚氯乙烯层厚度为0.4-0.8mm。2. A kind of safety infusion set as claimed in claim 1, is characterized in that, described polyurethane/polyvinyl chloride double-layer composite material dropping funnel, polyurethane layer thickness is 0.1-0.4mm, polyvinyl chloride layer thickness is 0.4-0.8mm. 3.如权利要求1所述的一种安全型输液器，其特征在于，所述的聚氨酯/聚氯乙烯双层复合输液管，聚氨酯层厚度为0.05-0.35mm，聚氯乙烯层厚度为0.35-0.80mm。3. A kind of safe infusion set as claimed in claim 1, it is characterized in that, described polyurethane/polyvinyl chloride double-layer composite infusion tube, polyurethane layer thickness is 0.05-0.35mm, polyvinyl chloride layer thickness is 0.35mm -0.80mm.
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CN101804226A (en) * 2010-04-02 2010-08-18 江西三鑫医疗器械集团有限公司 Low adsorption multi-layer co-extrusion light proofing infusion apparatus
CN102152105B (en) * 2011-05-12 2012-04-18 合肥工业大学 Automatic bottle-inserting needle and catheter assembling device for disposable transfusion apparatuses
CN102501503A (en) * 2011-10-19 2012-06-20 山东威高集团医用高分子制品股份有限公司 Dropping funnel bottle of blood transfusion apparatus and preparation method thereof
CN102600525A (en) * 2012-04-17 2012-07-25 圣光医用制品有限公司 Disposable thermoplastic polyurethane elastomer transfusion set
CN103566431A (en) * 2013-11-15 2014-02-12 北京伏尔特技术有限公司 Composite layer medical tube, co-extrusion machine head and method for manufacturing medical tubes
CN103751879B (en) * 2014-02-21 2016-11-23 北京伏尔特技术有限公司 Safe blow molding drip chamber assembly
CN105327403A (en) * 2015-11-19 2016-02-17 绍兴新原力科技有限公司 Compound type urinary catheter and processing technology thereof
CN105327437A (en) * 2015-11-19 2016-02-17 绍兴新原力科技有限公司 Hydrophilic type super-lubricity urinary catheter and preparation method thereof
TWI714279B (en) * 2019-09-24 2020-12-21 丁原傑 Temperature compensation current limiting device and elastic infusion system
CN110812663A (en) * 2019-12-12 2020-02-21 河南驼人贝斯特医疗器械有限公司 Central venous catheter and manufacturing method thereof
CN111365534B (en) * 2020-03-13 2021-02-02 中国热带农业科学院农产品加工研究所 Polymer coating natural latex tube and preparation method thereof
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