CN104014257A - Automatic liquid stopping nucleopore filter membrane used for precision transfusion and preparing method thereof - Google Patents
Automatic liquid stopping nucleopore filter membrane used for precision transfusion and preparing method thereof Download PDFInfo
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- CN104014257A CN104014257A CN201410239019.1A CN201410239019A CN104014257A CN 104014257 A CN104014257 A CN 104014257A CN 201410239019 A CN201410239019 A CN 201410239019A CN 104014257 A CN104014257 A CN 104014257A
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Abstract
The invention discloses an automatic liquid stopping nucleopore filter membrane used for precision transfusion and a preparing method thereof. The preparing method includes: irradiating polyester film with a certain thickness by utilization of particles generated by an accelerator; etching in an aqueous sodium hydroxide solution having a temperature of 55-80 DEG C and a concentration of 6.5-8.0 mol/L for 3-60 min; cleaning in an aqueous sodium hydroxide solution having a temperature of 55-80 DEG C and a concentration of 0.5-1 mol/L; cleaning in deionized water; in a modification liquid having a temperature of 60-80 DEG C, performing ultrasonic dipping firstly for 3-10 min, stopping ultrasonic dipping for 15-40 min, and then performing ultrasonic dipping for 3-10 min; cleaning in deionized water; and drying at 40-70 DEG C so that the automatic liquid stopping nucleopore filter membrane used for precision transfusion is obtained. The method is simple. The prepared membrane is superhydrophilic. The water contact angle of the prepared membrane is less than 30 degrees. The liquid stopping height of the membrane is 1.8-3.0 m.
Description
Technical field
The invention belongs to infusion solutions secondary filter technical field, particularly the preparation method of automatic liquid-stopping nuclear pore filter film for a kind of precision transfusion.
Technical background
Fluid transport therapy originates from late nineteenth century, has a long history.Simple, convenient owing to having, evident in efficacy, feature efficiently, nineteen thirties has just become one of indispensable important means and method in modern clinic treatment, has extremely important status in modern clinic.
In clinical transfusion practice, no matter be that common filter infusion apparatus excessively or precision liquid medicine are crossed filter infusion apparatus, all existing needs nurse to pay special attention to avoid liquid to drip the phenomenon that empty Mo Feishi dropper and liquid drip off to occur, liquid drips empty Mo Feishi dropper need to carry out secondary exhaust, if filter designs without transom window, need to change whole transfusion device, increase patient and pay and cause that patient is discontented; Liquid drips off, and occurs that blood backflow causes that patient is nervous.
For alleviating nurse job intensity, there is the automatic liquid-stopping functional filters that adopts traditional buoy to possess the transfusion device of automatic liquid-stopping function and realized by filter membrane with automatic liquid-stopping device.The transfusion device [1-2] that adopts traditional buoy to possess automatic liquid-stopping function is by buoy, to be subject to the impact of liquid buoyancy to stop up woven hose to reach automatic liquid-stopping effect, the impact that this function is subject to medicine liquid ingredient and degree of purity is larger, slightly impurity, particle, plastic buoy just cannot coincide with woven hose, can not realize automatic liquid-stopping.What is more important, once adopt traditional buoy to possess its automatic liquid-stopping of transfusion device of automatic liquid-stopping function, the liquid that buoy is blocked in interior tens of milliliters of transfusion device below cannot continue to input human body, the loss of inevitable liquid.And adopt filter membrane to realize the filter of automatic liquid-stopping, and its filter membrane is the extremely strong perforated membrane of hydrophily, material is tunica fibrosa.This only liquid filter is realized automatic liquid-stopping function according to the capillary theory of micropore on perforated membrane, has following drawback: 1) adopt tunica fibrosa, in infusion solutions, because filter membrane is immersed in liquid for a long time, have the risk of fibre shedding; 2) perforated membrane pore-size distribution is wide, and hole size heterogeneity depends on aperture strongly because stopping liquid height, thereby has the only risk of liquid failure; 3) filter membrane is perforated membrane, and thickness mostly is micron up to a hundred, thereby liquid absorption is large, causes certain loss of medicine.Once to traditional infusion device, the adsorptivity for 13 kinds of medicines such as atropine, Nimodipine, nikethamidums was studied in Beijing An Zhen hospital, and result shows that filter membrane reaches as high as 50% to the adsorption rate of medicine.For clinical department, the clinical departments such as the high cardiology department of especially medication accuracy, hematology, neurology department, department of anesthesia, owing to cannot accurately estimate that medicine used has actually, how much can run off, therefore, be difficult to accomplish the exact dose medication according to the state of an illness.The adsorptivity of transfusion device, has not only caused the waste of liquid, and main is to have brought many beyond thought difficulties to clinical position.Disadvantageous beyond doubt for accurate measurement medication and costly medicine infusion.
Nucleopore membranes is by heavy ion, on megohmite insulant, to be punched and chemical etching reaming forms.When heavy ion in megohmite insulant film can etching range be greater than film thickness time, the radiation injury producing on the heavy ion path of each vertical incidence, the preferential etching of available chemical method, forms the straight channels (micropore) that penetrates insulation film.The insulation film with one or more this penetrability micropores is called nucleopore membranes.
Nucleopore membranes has unique physics, chemistry and biological property:
1) accurately, aperture and the hole density of homogeneous
Filter membrane separation efficiency is the most important Performance Characteristics of miillpore filter.This characteristic is controlled by aperture and the pore size distribution of film.The height that only reaches aperture is even, and the filtering accuracy of filter membrane just can reach pin-point accuracy.The micropore of accelerator-produced nucleopore membranes, aperture homogeneous, hole shape rule, energy 100% is held back the particulate that is greater than aperture.
2) columned microcellular structure
Because nucleopore membranes has this microcellular structure, when filtering, all particles that are greater than aperture are all trapped within the surface of film, adopt cross-flow filtration technology can very effectively control concentration polarization and filter cake accumulation, so long-time operation still can guarantee higher flux.
3) rate of filtration is large
The porosity of nucleopore membranes is little, but its thickness is also little, has compensated the filtering velocity causing due to low porosity and has declined.
4) do not adsorb, without fibre shedding
Nucleopore membranes micropore specific area is little, only has a thirtieth of cellulose membrane, thereby adsorption capacity is very low, concerning filtering liquid that some prices are high or a small amount of precious liquid, because liquid is filtered loss that medium absorption causes by considerably less.The material of nucleopore membranes is high molecular polymer, does not have any material that may move in filtrate, thereby can not pollute filtrate in the mode of outside admixture.
5) chemical stability is good
Can be acidproof and the erosion, particularly PET film of most organic solvents, most organic solvents such as it almost can resistance to hydrocarbon, alcohol, ether, acid, ester, halogenated hydrocarbons, are the good substitutes of microporous teflon membran.
6) biologically inert is good
PC and PET nucleopore membranes are inertia to microorganism, are neither subject to the erosion of microorganism, again because solable matter is atomic, do not suppress biological breeding, thereby can under wet environment, work for a long time on the one hand, are quite safe on the other hand to biology.PC film is crossed the experiments such as UPS VI level and biochemistry at Americanologist, proves biological nontoxic, uses safety in injection, there is no the generation of a bit factitious stimulation or inhibition cell.China North China Pharmaceutical Factory had once carried out acute toxicity test in mice to PET, and the test of rabbit intradermal reaction and hemolytic test, all show that PET has no adverse reaction to biology.
7) Heat stability is good
PET film can stand 150 ℃, and short-term can stand 175 ℃, thereby film can be contained in and in filter, repeatedly carry out hot pressing sterilization and do not break and be out of shape.
Nucleopore membranes is adsorbed with its unique physics, chemistry and biological property, excellent particle cutoff performance, the high flux rate of filtration and extremely low liquid, become and meet infusion solutions ultimate filter, particularly accurate filter and require ideal secondary filter material with film.
It should be to utilize aperture siphon principle to prepare the ideal material of automatic liquid-stopping secondary filter film that the characteristic of nucleopore membranes aperture homogeneous makes it, because of pore size consistent, therefore only liquid height and only liquid stable performance, if but the surface hydrophilicity of membrane material is bad, easily produce gas passage, cause only liquid performance failure.The precision transfusion filter kernel pore membrane filter material using clinically is at present polyester core pore membrane.The surface hydrophilicity of polyester material between hydrophilic and hydrophobic between.Therefore, if do not carry out the conventional polyester nucleopore membranes of any surperficial specially treated, can not use as the liquid medicine filtering membrane of infusion solutions automatic liquid-stopping.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of precision transfusion automatic liquid-stopping nuclear pore filter film is provided.
Second object of the present invention is to provide the preparation method of automatic liquid-stopping nuclear pore filter film for a kind of precision transfusion.
Technical scheme of the present invention is summarized as follows:
The preparation method of automatic liquid-stopping nuclear pore filter film for a kind of precision transfusion, comprise the steps: that the Xe-132 particle of 16MeV/u producing with accelerator is, the Ar-40 particle irradiation thickness of the Kr-84 particle of 15MeV/u or 10MeV/u is 8 μ m-30 μ m polyester films, etching 23-60 minute in 55-80 ℃, the sodium hydrate aqueous solution of 6.5-8.0mol/L; In 55-80 ℃, 0.5-1mol/L sodium hydrate aqueous solution, clean 6-10 minute; In deionized water, clean again; In 60 ℃ of-80 ℃ of modification liquids, first ultrasonic immersion 3-10 minute, stop ultrasonic immersion 15-40 minute again, continue ultrasonic immersion 3-10 minute again; In deionized water, clean; 40-70 ℃ of oven dry, makes precision transfusion automatic liquid-stopping nuclear pore filter film, and described modification liquid is comprised of 15-20 part potassium bichromate, 500-600 part concentrated sulfuric acid and 80-100 part deionized water in mass ratio.
The precision transfusion of preparing with said method automatic liquid-stopping nuclear pore filter film, the aperture of described film is 0.1-10 μ m, 9.6 °-30.0 ° of water contact angles, thickness is 7.9-24 μ m.
Advantage of the present invention
Method of the present invention is simple, and precision transfusion of the present invention is super hydrophilic with automatic liquid-stopping nuclear pore filter film, and water contact angle is less than 30 °, and only liquid height is relevant to aperture and film surface hydrophilicity, and only liquid height is 1.8 meters～3.0 meters.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated.
Embodiment 1
A preparation method for automatic liquid-stopping nuclear pore filter film for precision transfusion, comprises the steps: that the thickness of the Xe-132 particle irradiation of the 16MeV/u that produces with accelerator is 8 μ m polyester films, and in 55 ℃, the sodium hydrate aqueous solution of 6.5mol/L, etching is 60 minutes; In 60 ℃, 1mol/L sodium hydrate aqueous solution, clean 10 minutes; In deionized water, clean again; In 80 ℃ of modification liquids, first ultrasonic immersion 10 minutes, stop ultrasonic immersion 40 minutes again, continue ultrasonic immersion 10 minutes again; In deionized water, clean; 50 ℃ of oven dry, make precision transfusion automatic liquid-stopping nuclear pore filter film, and this membrane aperture is 0.1 μ m, and water contact angle is 30.0 °, thickness 7.9 μ m, and while using with filter membrane as precision transfusion filter, only liquid height reaches 3.0 meters.
Modification liquid is comprised of 15 parts of potassium bichromates, 500 parts of concentrated sulfuric acids (aqueous solution that mass concentration is 98%) and 80 parts of deionized waters in mass ratio.
Embodiment 2
A preparation method for automatic liquid-stopping nuclear pore filter film for precision transfusion, comprises the steps: that the thickness of the Kr-84 particle irradiation of the 15MeV/u that produces with accelerator is 12 μ m polyester films, and in 65 ℃, the sodium hydrate aqueous solution of 7.0mol/L, etching is 30 minutes; In 55 ℃, 1mol/L sodium hydrate aqueous solution, clean 10 minutes; In deionized water, clean again; In 70 ℃ of modification liquids, first ultrasonic immersion 8 minutes, stop ultrasonic immersion 30 minutes again, continue ultrasonic immersion 8 minutes again; In deionized water, clean; 40 ℃ of oven dry, make precision transfusion automatic liquid-stopping nuclear pore filter film, and this membrane aperture is 2.0 μ m, and 25.3 ° of thickness of water contact angle are 10 μ m, and while using with filter membrane as precision transfusion filter, only liquid height reaches 3.0 meters.
Modification liquid is comprised of 20 parts of potassium bichromates, 550 parts of concentrated sulfuric acids (aqueous solution that mass concentration is 98%) and 80 parts of deionized waters in mass ratio.
Embodiment 3
A preparation method for automatic liquid-stopping nuclear pore filter film for precision transfusion, is characterized in that comprising the steps:
The thickness of the Kr-84 particle irradiation of the 15MeV/u producing with accelerator is 30 μ m polyester films, and in 75 ℃, the sodium hydrate aqueous solution of 7.0mol/L, etching is 30 minutes; In 75 ℃, 0.5/L sodium hydrate aqueous solution, clean 10 minutes; In deionized water, clean again; In 60 ℃ of modification liquids, first ultrasonic immersion 3 minutes, stop ultrasonic immersion 20 minutes again, continue ultrasonic immersion 3 minutes again; In deionized water, clean; 60 ℃ of oven dry, make precision transfusion automatic liquid-stopping nuclear pore filter film, and this membrane aperture is 5.0 μ m, 15.1 ° of water contact angles, and thickness is 24 μ m, while using with filter membrane as precision transfusion filter, only liquid height reaches 2.2 meters.
Modification liquid is comprised of 20 parts of potassium bichromates, 600 parts of concentrated sulfuric acids (aqueous solution that mass concentration is 98%) and 100 parts of deionized waters in mass ratio.
Embodiment 4
A preparation method for automatic liquid-stopping nuclear pore filter film for precision transfusion, the thickness that comprises the steps: to produce with accelerator the Ar-40 particle irradiation of 10MeV/u is 25 μ m polyester films, in 80 ℃, the sodium hydrate aqueous solution of 8.0mol/L, etching is 23 minutes; In 80 ℃, 0.5/L sodium hydrate aqueous solution, clean 6 minutes; In deionized water, clean again; In 80 ℃ of modification liquids, first ultrasonic immersion 3 minutes, stop ultrasonic immersion 15 minutes again, continue ultrasonic immersion 3 minutes again; In deionized water, clean; 70 ℃ of oven dry, make precision transfusion automatic liquid-stopping nuclear pore filter film, and this membrane aperture is 10.0 μ m, and 9.6 ° of thickness of water contact angle are 12 μ m, and while using with filter membrane as precision transfusion filter, only liquid height reaches 1.8 meters.
Modification liquid is comprised of 20 parts of potassium bichromates, 600 parts of concentrated sulfuric acids (aqueous solution that mass concentration is 98%) and 80 parts of deionized waters in mass ratio.
Claims (2)
1. the preparation method of automatic liquid-stopping nuclear pore filter film for a precision transfusion, it is characterized in that comprising the steps: that the Xe-132 particle of 16MeV/u producing with accelerator is, the Ar-40 particle irradiation thickness of the Kr-84 particle of 15MeV/u or 10MeV/u is 8 μ m-30 μ m polyester films, etching 23-60 minute in 55-80 ℃, the sodium hydrate aqueous solution of 6.5-8.0mol/L; In 55-80 ℃, 0.5-1mol/L sodium hydrate aqueous solution, clean 6-10 minute; In deionized water, clean again; In 60 ℃ of-80 ℃ of modification liquids, first ultrasonic immersion 3-10 minute, stop ultrasonic immersion 15-40 minute again, continue ultrasonic immersion 3-10 minute again; In deionized water, clean; 40-70 ℃ of oven dry, makes precision transfusion automatic liquid-stopping nuclear pore filter film, and described modification liquid is comprised of 15-20 part potassium bichromate, 500-600 part concentrated sulfuric acid and 80-100 part deionized water in mass ratio.
2. the precision transfusion automatic liquid-stopping nuclear pore filter film that prepared by the method for claim 1, the aperture that it is characterized in that described film is 0.1-10 μ m, 9.6 °-30.0 ° of water contact angles, thickness is 7.9-24 μ m.
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Cited By (3)
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| CN104190269A (en) * | 2014-09-11 | 2014-12-10 | 浙江南洋慧通新材料有限公司 | Method for improving hydrophilia of heavy-ion microporous membrane |
| CN104607054A (en) * | 2014-12-31 | 2015-05-13 | 浙江南洋慧通新材料有限公司 | Heavy-ion microporous membrane infusion apparatus capable of stopping liquid and membrane preparation method thereof |
| CN109078503A (en) * | 2018-08-17 | 2018-12-25 | 东华大学 | PET precision transfusion filters nucleopore membranes hydrophilicity-imparting treatment technique |
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| CN104607054A (en) * | 2014-12-31 | 2015-05-13 | 浙江南洋慧通新材料有限公司 | Heavy-ion microporous membrane infusion apparatus capable of stopping liquid and membrane preparation method thereof |
| CN109078503A (en) * | 2018-08-17 | 2018-12-25 | 东华大学 | PET precision transfusion filters nucleopore membranes hydrophilicity-imparting treatment technique |
| CN109078503B (en) * | 2018-08-17 | 2021-01-12 | 东华大学 | Hydrophilic treatment process for PET precision transfusion filtering nuclear pore membrane |
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Effective date of registration: 20220921 Address after: Office Building, No. 18, Hanjiang Road, Lingang Economic Zone, Binhai New Area, Tianjin 300452 Patentee after: TIANJIN LIYUAN TECHNOLOGY CO.,LTD. Patentee after: TIANJIN SAIDE MEDICAL DEVICES CO.,LTD. Address before: No. 38, Gaoxin 5th Road, Binhai Science and Technology Park, Binhai New District, Tianjin 300384 Patentee before: TIANJIN LIYUAN TECHNOLOGY CO.,LTD. |