CN102266640A - Medical perfusion tube - Google Patents
Medical perfusion tube Download PDFInfo
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- CN102266640A CN102266640A CN2010101967714A CN201010196771A CN102266640A CN 102266640 A CN102266640 A CN 102266640A CN 2010101967714 A CN2010101967714 A CN 2010101967714A CN 201010196771 A CN201010196771 A CN 201010196771A CN 102266640 A CN102266640 A CN 102266640A
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Abstract
The invention discloses a medical perfusion tube, which comprises an inner layer, an outer layer and a middle layer stuck with the inner layer and the outer layer, wherein the middle layer consists of spaced cavities and hollow cylindrical barriers. The medical perfusion tube saves a large amount of raw materials, has low production cost and excellent bending resistance, is more favorable for normal activity of a patient in treatment, has good compatibility with human skin or liquid medicine, and meets the environment-friendly requirement.
Description
Technical field
The present invention relates to a kind of medical equipment, more particularly, relate to a kind of medical infusion lines.
Background technology
Must possess good physical and chemical performance as medical tube for transfusion, as possessing good toughness, hydrolytic resistance, wearability, flex stiffiness etc., also must possess avirulence in addition, as anaphylaxis in use not occurring and not having the aberration inducing effect, and need show excellent biocompatibility, the early stage Heveatex medical product that uses is eliminated because of the problem that exists protein allergy and carcinogen nitrosamine to separate out.
Different macromolecular materials have characteristics separately, and the pipe fitting of working it out may have diverse physical property.For example, polyvinyl chloride pipe can be soft can be hard, can be transparent or opaque, its durability is applicable to most of medical fields; The hardness and the chemical resistance of polyethylene tube are stronger, but are vitrinas; The transparency height of polycarbonate pipe, high temperature resistant, but very hard.As if yet medical infusion lines requires pipe fitting to have the characteristic of contradiction, as having high chemical resistance and pliability simultaneously, homogenous material can't satisfy the demands, and therefore the advantage that the pipe of multiple material preparation can comprehensive various materials reaches the good applicability energy.
The Chinese patent publication number is that CN201179269 discloses a kind of medical infusion lines, comprise internal layer, skin and bonding internal layer and outer field intermediate layer, described intermediate layer is the ethene-vinyl acetate copolymer material layer, described internal layer is the high-density polyethylene material layer, skin is the polyurethane material layer, or internal layer is the polyurethane material layer, and skin is the polythene material layer.Have excellent bend resistance performance, be more conducive to the normal activity of patient in treatment is used, with human body skin, the medicinal liquid compatibility is good and satisfy environmental requirement, but the production cost height has been wasted a large amount of ethene-vinyl acetate copolymer materials.
Summary of the invention
The purpose of this invention is to provide a kind ofly save material, production cost is low, have excellent bend resistance performance equally, be more conducive to the normal activity of patient in treatment is used, with human body skin, the medicinal liquid compatibility is good and satisfy the medical infusion lines of environmental requirement.
The technical solution adopted for the present invention to solve the technical problems is: medical infusion lines, comprise internal layer, skin and bonding internal layer and outer field intermediate layer, and described intermediate layer is the alternate formation with the hollow cylindrical barrier of cavity.
The thickness range of described internal layer is 0.025～1.0 millimeter.
The wall thickness range of described hollow cylindrical barrier is 0.025～0.2 millimeter.
Described outer layer thickness scope is 0.025～0.2 millimeter.
Medical infusion lines of the present invention, comprise internal layer, skin and bonding internal layer and outer field intermediate layer, described intermediate layer is the alternate formation with the hollow cylindrical barrier of cavity, described intermediate layer is the ethene-vinyl acetate copolymer material layer, described internal layer is the high-density polyethylene material layer, skin is the polyurethane material layer, or internal layer is the polyurethane material layer, and skin is the polythene material layer.Wherein polyurethane is alternately inlayed by soft chain segment and hard segment and is formed, it is the polar polymer that contains many-NHCOO-group, can be by selecting suitable soft, hard segment ratio, the good macromolecular materials of physical and chemical performance such as synthetic toughness, hydrolytic resistance, wearability, flex stiffiness add and need not to add plasticizer and other additives man-hour.In addition, medical polyurethane shows excellent blood compatibility and biocompatibility, polyurethane toxicity test result meets medical requirement, in experimentation and clinical practice, show good anticoagulation function, no aberration inducing effect, do not have irritated reaction, these advantages have guaranteed no matter polyurethane products still are that external medical product can both have been given play to good performance in vivo.
Ethene-vinyl acetate copolymer (EVA) has good flexibility in wider temperature range, resistance to impact, environmental stress crack resistance still can have pliability preferably, the transparency under-50 ℃.EVA is nontoxic, safe and reliable.The EVA material is applied in the pipe fitting, not only plays cushioning effect, and has caking property preferably, can improve the bond strength of tube material.
Polyethylene has excellent physical and mechanical property, and its chemical stability, resistance to water and biocompatibility are good, and be tasteless, nontoxic, and implanting has no adverse reaction, and density is little, is easy to machine-shaping.
In the present invention, when internal layer is the high-density polyethylene material layer, the intermediate layer is the alternate formation with the hollow cylindrical barrier of cavity, the hollow cylindrical barrier is the ethene-vinyl acetate copolymer material, when skin was the combination of polyurethane material layer, internal layer high-density polyethylene material layer had good bend resistance performance and chemical resistance; Outer polyurethane strengthens the conduit flexibility and has toughness simultaneously; Hollow cylindrical barrier ethene-vinyl acetate copolymer material layer bonds ectonexine, guarantees that conduit is difficult for taking place layering.When internal layer is polyurethane material layer, intermediate layer when being ethene-vinyl acetate copolymer (EVA) material layer, outer combination for the polythene material layer, internal layer polyurethane and drug compatibility are good, good springiness; The outer layer polyethylene water-tolerant; Intermediate layer EVA material layer plays cementation, plays certain cushioning effect to guiding-tube bend is stressed simultaneously.In addition, more than in two kinds of combinations, all do not contain pvc material, when burning disposal, all can not produce harmful gass such as hydrogen chloride and Lvization bioxin, can not produce severe contamination, compliance with environmental protection requirements to environment.
The present invention compared with prior art has following beneficial effect: saved a large amount of raw materials, production cost is low; have excellent bend resistance performance equally, be more conducive to the normal activity of patient in treatment is used, with human body skin, the medicinal liquid compatibility is good and satisfy environmental requirement.
Description of drawings
Fig. 1 is a medical infusion lines pipe range directional profile sketch map;
Fig. 2 is a medical infusion lines caliber directional profile sketch map.
In the accompanying drawing: 1, skin, 2, the intermediate layer, 3, internal layer, 4, cavity, 5, the hollow cylindrical barrier.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1, Fig. 2 show a more excellent embodiment of the present invention.
Shown in Figure 2 as Fig. 1, medical infusion lines in the present embodiment is made up of internal layer 3, intermediate layer 2 and outer 1, outer 1 is polyurethane (PU) material layer, internal layer 3 is high density polyethylene (HDPE) (HDPE) material layer, the intermediate layer is the alternate formation with the hollow cylindrical barrier of cavity, the hollow cylindrical barrier is the ethene-vinyl acetate copolymer material, and the hollow cylindrical barrier is as the adhesive linkage of bonding internal layer 3 with skin 1.Tube for transfusion can be applicable to accurately injection for curing medical apparatus and instruments of long-term trace in the present embodiment, as insulin pump, the dimensional requirement of pipe is as follows: inside diameter ranges approximately is 0.4mm～1.0mm, the thickness of internal layer 3 is about 0.025mm～1.0mm, the thickness in intermediate layer 2 is about 0.025mm～0.2mm, outer 1 thickness range is 0.025mm～0.2mm, and the external diameter scope is about 0.6mm～4.0mm.
In the present embodiment, internal layer high-density polyethylene material layer has good bend resistance performance and chemical resistance; Outer polyurethane strengthens the conduit flexibility and has toughness simultaneously; The intermediate layer is the alternate formation with the hollow cylindrical barrier of cavity, and the hollow cylindrical barrier is that the ethene-vinyl acetate copolymer material bonds ectonexine, guarantees that conduit is difficult for taking place layering.
In the present embodiment, during concrete enforcement, also can be following combination: internal layer be polyurethane (PU) material layer, the intermediate layer is the alternate formation with the hollow cylindrical barrier of cavity, the hollow cylindrical barrier is the ethene-vinyl acetate copolymer material, and the hollow cylindrical barrier is as the adhesive linkage of bonding internal layer 3 with skin 1, and skin is polyethylene (PE) material layer, this moment, internal layer polyurethane and drug compatibility were good, good springiness; The outer layer polyethylene water-tolerant; Intermediate layer ethene-vinyl acetate copolymer material layer plays cementation, plays certain cushioning effect to guiding-tube bend is stressed simultaneously.
Embodiment is just for the ease of understanding technical scheme of the present invention; do not constitute limiting the scope of the invention; every interior any simple modification, equivalent variations and modification of perhaps according to technical spirit of the present invention above scheme being done that does not break away from technical solution of the present invention all still belongs within the protection domain of the present invention.
Claims (4)
1. medical infusion lines comprises the intermediate layer (2) of internal layer (3), outer (1) and bonding internal layer (3) and outer (1), and it is characterized in that: described intermediate layer (2) are cavity (4) and the alternate formation of hollow cylindrical barrier (5).
2. medical infusion lines according to claim 1 is characterized in that: the thickness range of described internal layer (3) is 0.025～1.0 millimeter.
3. medical infusion lines according to claim 1 is characterized in that: the wall thickness range of described hollow cylindrical barrier (5) is 0.025～0.2 millimeter.
4. medical infusion lines according to claim 1 is characterized in that: described skin (1) thickness range is 0.025～0.2 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101967714A CN102266640A (en) | 2010-06-01 | 2010-06-01 | Medical perfusion tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101967714A CN102266640A (en) | 2010-06-01 | 2010-06-01 | Medical perfusion tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102266640A true CN102266640A (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101967714A Pending CN102266640A (en) | 2010-06-01 | 2010-06-01 | Medical perfusion tube |
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| Country | Link |
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| CN (1) | CN102266640A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111971087A (en) * | 2018-03-29 | 2020-11-20 | 益首药物治疗股份公司 | Multi-layer hose for an infusion set for dispensing a fluid |
-
2010
- 2010-06-01 CN CN2010101967714A patent/CN102266640A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111971087A (en) * | 2018-03-29 | 2020-11-20 | 益首药物治疗股份公司 | Multi-layer hose for an infusion set for dispensing a fluid |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111207 |