CN1317038C - Virus inactivating method of extracorporeal circulated blood and its application - Google Patents
Virus inactivating method of extracorporeal circulated blood and its application Download PDFInfo
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Abstract
The present invention discloses a method for inactivating viruses of in vitro circular blood, which comprises the following steps: 1) an anticoagulant is added into a whole human blood source, and a whole human blood source circulating system is established; 2) anticoagulant whole blood is pumped into a blood plasma separating device; after the anticoagulant whole blood is separated, erythrocyte is directly pumped back to the whole human blood source and blood plasma enters a mixing delivery pump; 3) simultaneously, methylthioninium chloride as a photosensitizer is added to the mixing delivery pump; after the methylthioninium chloride is mixed with the blood plasma, a mixed blood plasma is pumped to a blood plasma container; 4) the mixed blood plasma in the blood plasma container is inactivated by a light irradiation apparatus under light irradiation; the inactivated mixed blood plasma is pumped to a photosensitizer removing device; 5) the methylthioninium chloride is adsorbed by the photosensitizer removing device; the inactivated blood plasma is pumped to the whole human blood source; 6) step 2) is repeated to step 5) until a virus content in the whole human blood source is lowered by 99.99%. By the present invention, blood is circularly treated in batch size, is operated in pipelines and is treated by a sterilization and insulation disposable closed system. The treated blood plasma is returned to the whole human blood source and can be directly conveyed to an organism. The present invention can be further used for curing diseases containing viruses such as hepatitis b, hepatitis c, Acquired Immure Deficiency Syndrome (Aids), Severe Acute Respiratory Syndrome(SARS), etc. and can be used for removing receptor viruses during organ transplantation.
Description
Technical field
The present invention relates to the blood purification processing method, be specifically related to a kind of method of the virus in the blood circulation being carried out deactivation.
Background technology
As everyone knows, itself is easy to tainting virus blood, as hepatitis B virus, hepatitis C virus and HIV (human immunodeficiency virus) (Human Immunodeficiency Virus) etc., and the danger that blood transfusion has the toxicity disease that spreads disease, blood safety is to influence life and health and safe matter of utmost importance.Be one of measure that ensures blood safety to the inactivation of virus of blood and composition thereof, methylene blue (MB)/photochemical method can the deactivation human plasma virus, has obtained remarkable result on to the processing of single bag of blood plasma of clinical usefulness.But this treatment step to single bag of blood plasma is more loaded down with trivial details: needed to add methylene blue in addition before handling in specific environment in blood plasma, envelope is shelved in the inactivating device afterwards and handles again; And the blood plasma after handling still can't directly use, and also unpacking is removed to mix with erythrocyte behind the residual methylene blue again and just can be used for transfusing blood again.Since repeatedly open bag and envelope, and also have and the blended step of erythrocyte, not only very high to the operating environment requirement, both increased input, also increased the contaminated chance of bag inner blood.Clean blood is provided if desired for a long time, in large quantities, and the method that single bag of blood plasma is handled respectively obviously can not meet the demands.
Summary of the invention
The purpose of this invention is to provide a kind of method that virus in extracorporeally circulating blood is carried out deactivation, it carries out the method for online circular treatment to blood, and the blood circulation that can satisfy breaking away from organism carries out the real-time online inactivation of virus.
For achieving the above object, the present invention takes following design:
Virus inactivating method in a kind of extracorporeally circulating blood comprises the steps:
1) adds anticoagulant in the full blood, set up the full blood blood circulation;
2) with anticoagulated whole blood suction plasma separating unit, after the separation, the direct blowback full blood of erythrocyte, blood plasma enters the mixing delivery pump;
3) in mixing delivery pump, add simultaneously the photosensitizer methylene blue, methylene blue with pump into the blood plasma container after blood plasma mixes;
4) illumination meter carries out the illumination deactivation to blended blood plasma in the blood plasma container, quick dose of removal device of blood plasma pump light inlet after the deactivation;
5) photosensitizer removal device absorption methylene blue, blood plasma is drawn back full blood after the deactivation;
6) repeating step 2) to step 5), viral level reduces by 99.99% in full blood.
Wherein, be storehouse blood for full blood, derive from blood station, blood bank, blood bag or blood reservior, perhaps, derive from the blood transfusion pipeline for breaking away from the extracorporeally circulating blood of organism.
The mixing delivery pump is a peristaltic pump, and the blood plasma transporting velocity is the 30-150 ml/min, and the photosensitizer input speed is 1% of a blood plasma transporting velocity.
Light source is a light-emitting diode group in the illumination meter, and the light application time of accepting the illumination meter light source after blood plasma flows in the blood plasma container is 60 seconds.The blood plasma container is the sealed container of two ends band pipeline.
Sorbent used in the photosensitizer removal device is the attapulgite material.
All aseptic and the disposable closed system of above-mentioned pump line, pipeline, plasma separator and blood plasma container for being isolated from the outside.
Another object of the present invention is to provide the application in virus and the treatment viral disease in deactivation body blood circulation of virus inactivating method in the above-mentioned extracorporeally circulating blood.
Adopt technique scheme, advantage of the present invention is: the blood plasma after the processing is clean blood plasma, can directly send full blood back to, is used to be transported to organism; Simplified the loaded down with trivial details operation of blood plasma deactivation, can be in bulk, flowing water and circular treatment blood, realize that real-time online carries out inactivation of virus to blood plasma; Use aseptic and disposable closed system that be isolated from the outside to handle, guaranteed the safety of blood.
Description of drawings
Fig. 1 is the inventive method schematic flow sheet;
Fig. 2 is a used illumination meter structural representation in the inventive method;
Fig. 3 is a used photosensitizer removal device structural representation in the inventive method.
The specific embodiment
As shown in Figure 1, virus inactivating method flow process in the extracorporeally circulating blood of the present invention is shown, comprises the steps:
1) in full blood 1, adds anticoagulant, set up the full blood blood circulation;
2) with anticoagulated whole blood suction plasma separating unit 3, after the separation, erythrocyte is through erythrocyte carrier pipe 32 direct blowback full bloods 1, and blood plasma enters through blood plasma carrier pipe 33 and mixes delivery pump 4;
3) in mixing delivery pump 4, add the photosensitizer methylene blue through photosensitizer carrier pipe 41 simultaneously, regulate adding speed and ratio, methylene blue is mixed in the drain pipe 42 that mixes delivery pump 4 with blood plasma.
4) 6 pairs of blood plasma that mix of illumination meter carry out the illumination deactivation, quick dose of removal device 7 of blood plasma pump light inlet after the deactivation;
5) photosensitizer removal device 7 absorption methylene blue, blood plasma is drawn back in the full blood 1 through blood plasma outlet tube 71;
So far, finish a cyclic process of separating plasma in the full blood 1, inactivation of virus and removal photosensitizer, at this moment, can be killed by 99.99% through virus in this circulation blood plasma.Repeating step 2) to step 5), can carry out repeatedly circular treatment to full blood, the viral level level is not enough to influence healthy and blood function in full blood.
In above-mentioned processing procedure, used instrument and equipment and reagent, material can for:
1) full blood: be storehouse blood, derive from blood station, blood bank, blood bag or blood reservior, perhaps, derive from the blood transfusion pipeline for breaking away from the extracorporeally circulating blood of organism.
2) plasma separating unit: the blood separator that the Beijing Jingjing Medical Equipment Co., Ltd produces.
3) mix delivery pump: the BT00-100M type peristaltic pump that Baoding LanGe constant flow pump Co., Ltd produces
4) illumination meter light source: adopt 1.5 square light emitting diodes (wavelength is 600-700nm).Through being processed into luminous plaque, use two these luminous plaques among the present invention, the blood plasma upper and lower surface is shone simultaneously.
6) illumination meter illumination photometry method: adopt illumination meter to measure intensity of illumination.Measurement point distance with handle sample apart from consistent.
7) illumination meter blood plasma container: transparent type blood bag (100ml, 200ml specification, the PVC material is made).
8) anticoagulant: CPDA Precerving liquid, ACD Precerving liquid, heparin.
9) photosensitizer methylene blue (MB), the used for intravenous injection medicine that Yongkang, Beijing pharmaceutical factory produces, specification 20mg/2ml.The preparation of methylene blue: in superclean bench, dilute 267.5 times with normal saline, be made into 100 μ mol/L (containing methylene blue 37.4 μ g/ml) and be the methylene blue storage liquid with the quiet notes of 0.9% sterilization.Do 100 times of dilutions during deactivation again, promptly 100ml blood plasma adds 1ml methylene blue storage liquid with disposable syringe, and final concentration is 1 μ mol/L.
10) photosensitizer adsorbing material: attapulgite (natural porous nano material), crosslinked agar bag embedding attapulgite microcapsule (CAA), the preparation technology of CAA:
(1) pretreatment of attapulgite: the powdery attapulgite crude drug is provided by pharmaceutical factory of Nanjing University, soaked about 2 hours through diluted acid with preceding, then with the alkali neutralization, extremely near neutral through the distilled water repeated treatments, after the oven dry, each is used carefully to pulverize, sieve, remove the following micropowder of 100 orders under 105 ℃.
(2) microcapsule preparation and cross-linking reaction: get an amount of agar powder (productions of Qingdao aquatic products factory) and be suspended in the distilled water, be heated to agar in the dried boiling water bath and melt, solution is translucent till the no jelly, makes the agar solution of 2-6% concentration.Again attapulgite 20～30% is sneaked in the hot agar solution by weight, carefully stir.With pressurization spray pearl method said mixture is injected in the refrigerative in advance medical paraffin oil mixture, controls the microcapsule size as far as possible, prevent to lump and condense.The agar attapulgite microcapsule that accumulates in the bottom is solidified into " soft pearl " after cooling.Earlier " soft pearl " separated with a large amount of paraffin oil, with eccysis such as distilled water residual paraffin oil and agar detritus, every 100ml agar can get CAA microcapsule 200～250mL then.
Soft pearl is put in the dried there-necked flask, add the cross-linking agent epoxychloropropane (heavily steaming before the use) of amount of calculation, dilute NaOH solution and an amount of stabilizing agent, behind the mix homogeneously, heat cross-linking 2～4h in 40 ℃～50 ℃ water-baths, constantly jolting, to prevent that soft pearl from condensing, and finishes until cross-linking reaction.At this moment, the CAA that can take a morsel cleans with distilled water, transfers its pH value to nearly neutrality, boils 10min in small beaker, if phenomenon such as distilled water is as clear as crystal, microcapsule does not bright and cleanly loose, no agar comes off, illustrates that promptly cross-linking reaction finished the processing of ability sterilization.
The CAA microcapsule that above-mentioned bag embedding is intact, leach after the cooling, through distilled water wash, the diluted acid neutralization, adding the special cleanout fluid of removing epoxy crosslinking agent soaks, sample analysis do not have the epoxy chloropropane remaining after, press the microcapsule diameter, with sub-sieve be divided into＜1mm, 1～2mm, 2～3mm,＞the 3mm specification, bottling respectively, and clean at last with ethanol, distilled water, to soak with distilled water or normal saline, sealing is used for sterilization.
(3) sterilization: above-mentioned CAA is airtight to bottle in 121 ℃ of sterilization 30min,, the cooling back is observed no agar and is come off, and supernatant is as clear as crystal, promptly gets the CAA finished product, and is standby.
Among the present invention, the best illumination meter 6 that uses, can adopt structure shown in Figure 2:
In the illumination meter 6, the light source of luminous plaque 62 is a light-emitting diode group, is formed by a lot of light emitting diode assemblings.The number and the arrangement mode of light emitting diode are not limit, and are as the criterion with the illumination that sufficient intensity is provided.
Supporting plate 61 is installed in the illumination meter cabinet 65, places blood plasma container 8 above; For blood plasma and methylene blue in the blood plasma container 8 can further fully be mixed, at an end of supporting plate 61 motor 66 is installed, when motor 66 work, drive supporting plate 61 and rock or shake.
Available blood plasma container 8 can be the sealed transparent container of two ends band pipeline, also can be the plasma bags of two ends band flexible pipe.For guaranteeing to go out the toxicity energy, its shape is preferably flat.
The front of illumination meter 6, pipeline connect mixes delivery pump 4.Pump 4 has two imports, and one is used to connect 33, one of source plasma carrier pipes and is used to connect photosensitizer source 5 carrier pipes 41; What the drain pipe 42 of pump 4 directly was communicated with blood plasma containers 8 advances blood vessel 81.Pump 8 can with blood plasma and photosensitizer pumps in setting speed and ratio and be delivered to blood plasma container 8 after the mixing in drain pipe 42.Photosensitizer can be used methylene blue.
Among the present invention, the best photosensitizer removal device 7 that uses, can adopt structure shown in Figure 3: photosensitizer removal device 7 is the methylene blue filtering collector, referring to Fig. 3, filtering collector 7 has tube-like envelope, pipe cap 71 and intervalve 72 two parts of being divided into two ends, pipe cap 71 are spirally connected with intervalve 72 and are the one that can be communicated with; Its two ends pipe cap 71 has the outstanding link 73 that can be connected with conduit, and conduit diameter is the 2-5 millimeter, and intervalve 42 diameters are 2cm, and two ends are established spongy layer 74, nonwoven layer 75, baffle plate 76 and annular seal washer 77 with holes from inside to outside successively.Be filled with adsorbing material 78 in the intervalve 72, be natural porous nano material---attapulgite; The multiple structure at intervalve 72 two ends allows liquid permeates but can isolate the conduit 73 that adsorbing material 78 enters adsorption filter 7 two ends; The seal washer 77 in baffle plate 76 outsides can prevent liquid in the intervalve 72 from and pipe cap 71 between the gap ooze out.
Embodiment one:
At room temperature, inject 200 milliliters of ACD Precerving liquids in 2000 milliliters of the full bloods in taking from the blood bag as anticoagulant, with mixed whole blood with 100 ml/min speed suction separation of whole blood devices, erythrocyte blowback full blood after the separation, blood plasma enters peristaltic pump with 100 ml/min speed, simultaneously, with the methylene blue adding peristaltic pump of 1 ml/min speed with 0.1mmol/l, from peristaltic pump, flow out mixed blood plasma and methylene blue liquid and import in the blood plasma container, mixed liquor is accepted illumination deactivation in 60 seconds in illumination meter after, flow into the photosensitizer removal device, the pure blood plasma behind the removal methylene blue flows back in the full blood through pipeline again; Circulate and close full blood outlet tube control valve after 120 minutes, treat that whole blood flows back to full blood, stops processing procedure.
Embodiment two:
Adopt the method identical with embodiment one, changing full blood is 1000 milliliters, and anticoagulant is the heparin of 300 units, and blood separation speed and blood plasma input speed are controlled at 30 ml/min, methylene blue adding speed is 0.3 ml/min, and circulation time was controlled at 60 minutes.
Embodiment three:
At room temperature, inject the heparin of 900 units in 3000 milliliters of the full bloods in taking from the blood bag as anticoagulant, with mixed whole blood with 150 ml/min speed suction separation of whole blood devices, erythrocyte after the separation flows into the erythrocyte storage bag, blood plasma enters peristaltic pump with 150 ml/min speed, simultaneously, with the methylene blue adding peristaltic pump of 1.5 ml/min speed with 0.1mmol/l, from peristaltic pump, flow out mixed blood plasma and methylene blue liquid and import in the blood plasma container, mixed liquor is accepted illumination deactivation in 60 seconds in illumination meter after, flow into the photosensitizer removal device, the pure blood plasma behind the removal methylene blue is blood plasma storage bag in pipeline flows into again; Close full blood outlet tube control valve after 20 minutes.Blood plasma in erythrocyte in the erythrocyte storage bag and the blood plasma storage bag mixes use again or uses respectively.
To the sampling of the whole blood after top processing, the viral load in the full blood and every biochemical indicator are detected, the index before the contrast deactivation is estimated inactivating efficacy and biological safety.
1, inactivation of virus effect detection
Detect vesicular stomatitis virus (VSV) and Sindbis virus (SV) respectively.Use African green monkey kidney (Vero) cell and Golden Hamster kidney (BHK respectively
21) cell surveys virus titer with micro-cytopathy political reform, press Karber method calculating lgTCID
50Detect the inactivation of virus effect.Referring to showing 1-1:
The inactivation of virus effect of blood plasma before and after table 1-1 the present invention handles
| Full blood volume (ml) | Circulation time (branch) | The residual titre lgTCID of virus 50 | |
| VSV | Sindbis | ||
| 1,000 2000 virus control | 60 120 | ≤-0.5 ≤-0.5 5.75 | ≤-0.5 ≤-0.5 5.75 |
1-1 can see from table, adopts the inventive method that full blood after processing a period of time, is got final product wherein virus of deactivation.
2, processing procedure of the present invention is to the influence test of plasma fraction
Materials and methods:
Blood coagulation factor VIII, IX detection kit:, use the method on the by specification available from Chengdu blood transfusion institute.
The mensuration of biochemical indicator: detect with the import automatic clinical chemistry analyzer.
Thrombin detects: detect with import automatic blood coagulation analyser.
The mensuration of blood plasma pH: measure with the import pH meter.
The mensuration of the blue residual quantity of blood plasma Central Asia first after the deactivation: press the absorbency detection method under the Chinese Pharmacopoeia methylene blue project, measure with import ultraviolet/visible spectrophotometer.
Complement C
3Mensuration: the agar list diffuser plate with Bang Ding company is measured.
2.1 active influence is measured to blood coagulation factor VIII: the VIII factor detection reagent box that uses the Chengdu blood transfusion to be produced, detect three batch samples through 60 minutes circular treatment, every batch of two bags of blood plasma.The result is shown in table 2-1, but the activity of blood coagulation factor VIII slightly reduces in circular treatment hyperamization in 60 minutes slurry, and the reduction amplitude is in 20%.
Table 2-1 circular treatment 60 minutes is to the active influence of plasma coagulation factors VIII
| The sample lot number | I | II | III |
| Handle sample Factor IX activity (%) control sample Factor IX activity (%) | 101(90.4％) 111.7(100％) | 131.1(85.1％) 154.1(100％) | 117.6(83.7％) 140.5(100％) |
2.2 to the active influence of plasma thromboplastin component: the factors IX detection kit of using the Chengdu blood transfusion to be produced, detect three batch samples, every batch of two bags of blood plasma.The result is shown in table 2-2, but the activity of plasma thromboplastin component slightly reduces in circular treatment hyperamization in the 60 minutes slurry, and the reduction amplitude is about 10%.
Table 2-2 circular treatment 60 minutes is to the active influence of plasma coagulation factors IX
| The sample lot number | I | II | III |
| Handle sample factors IX activity (%) control sample factors IX activity (%) | 106.1(88.3％) 120.2(100％) | 125.2(93.9％) 133.2(100％) | 89.4(94.7％) 94.4(100％) |
2.3 with automatic Blood coagulation instrument multiple thrombin in the blood plasma before and after the deactivation is detected: the results are shown in Table 2-3.
Table 2-3 circular treatment 60 minutes is to the active influence of plasma coagulation factors
| Thrombin | Contrast blood plasma | Handle blood plasma (reduction) |
| PT APTT II V VII VIII IX X XI XII | 14.9″(100％) 63.0″(100％) 24.6″(100％) 29.2″(100％) 25.0″(100％) 78.0″(100％) 63.6″(100％) 29.6″(100％) 77.4″(100％) 67.7″(100％) | 19.6″(31.5％) 74.0″(17.5％) 25.0″(1.6％) 31.8″(8.9％) 26.8″(7.2％) 83.6″(7.2％) 66.7″(4.9％) 32.6″(10.1％) 82.6″(6.7％) 70.2″(3.7％) |
2.4 influence to complement C3 content: the single diffuser plate with Bang Ding biotech firm produces, by the operation instruction operation, spread 48 hours, with the diameter of slide gauge survey diffuser ring, look into and contain scale.The result is shown in table 2-4, and blood plasma complement C3 content has the reduction about 5% compared with the control in 60 minutes full blood of circular treatment.
The influence to blood plasma complement C3 content in the full blood in 60 minutes of table 2-4 circular treatment
| The sample lot number | I | II | III |
| Handle sample (mg/ml) control sample (mg/ml) | 5.64(95.1％) 5.93(100％) | 5.43(93.7％) 5.82(100％) | 5.61(95.9％) 5.85(100％) |
2.5 influence: see Table 2-5,2-6,2-7 with the automatic biochemistry analyzer testing result to biochemical components such as plasma proteins.
Table 2-5 circular treatment 60 minutes is to the active influence of the biochemical enzyme of blood plasma in the full blood
| Index name | Unit | Contrast blood plasma | Handle blood plasma |
| Glutamic oxaloacetic transaminase, GOT lactic acid dehydrogenase creatine kinase alkali phosphatase glutamy changes phthalein enzyme glutamate pyruvate transaminase | iu/l iu/l iu/l iu/l iu/l iu/l | 19(100％) 109(100％) 108(100％) 55(100％) 16(100％) 15(100％) | 16(84.2％) 119(109.2％) 55(50.9％) 60(109.1％) 17(106.2％) 19(126.6％) |
The influence to plasma protein content in the full blood in 60 minutes of table 2-6 circular treatment
| Index name | Unit | Contrast blood plasma | Handle blood plasma |
| Glucose total protein albumin triglyceride | mM/l g/l g/l mM/l | 22.6(100％) 58.8(100％) 36.8(100％) 1.54(100％) | 21.2(93.8％) 58.8(100％) 36.1(98.1％) 1.62(105.2％) |
The influence to blood plasma inorganic salt content in the full blood in 60 minutes of table 2-7 circular treatment
| Index name | Unit | Contrast blood plasma | Handle blood plasma |
| Ca P Mg Na K Cl Cho | mM/l mM/l mM/l mM/l mM/l mM/l mM/l | 1.40(100％) 1.18(100％) 0.66(100％) 135.7(100％) 3.24(100％) 58.9(100％) 3.86(100％) | 1.57(121.1％) 1.19(100.8％) 0.67(101.5％) 135.1(99.8％) 3.22(99.3％) 58.7(99.7％) 3.82(98.9％) |
2.6 the influence to the whole blood pH value: whole blood is done 5 times of dilutions with normal saline detect the variation of handling front and back with the Hanan pH meter, the result shows that (table 2-8) processing method of the present invention does not cause that the pH value of whole blood itself changes.
The influence to the whole blood pH value in 60 minutes of table 2-8 circular treatment
| The sample lot number | I | II | III |
| Handle the sample control sample | 7.35 7.34 | 7.38 7.38 | 7.36 7.36 |
2.7 electrophoresis detection: the whole blood before and after will handling does not see that through immunoelectrophoresis, crossed immunoelectrophoresis, gel electrophoresis, SDS-gel electrophoresis and cellulose acetate membrane electrophoresis detection new antigen produces and the variation of Zone electophoresis band and mobility.
More than experiment shows, with the inventive method whole blood is carried out circular treatment after 60 minutes, under the condition that guarantees the complete inactivation plasma viral, various physiologically active ingredients in the blood plasma is not seen tangible influence.
3, the photosensitizer removal device is to the experiment of methylene blue adsorption effect
In the present invention, employing is the adsorbing material of crosslinked agar bag embedding attapulgite microcapsule (CAA) as methylene blue.CAA tests the methylene blue adsorption of variable concentrations in the blood plasma: adsorber filters 2 centimetres of diameters, 7 centimetres of CAA loading heights.Add not commensurability methylene blue in blood plasma, make the final concentration of methylene blue be respectively 1,2,3,4,6,8,10,15,20 μ mol/l survey before the filter respectively and the absorbance after the filter.
Measurement result is referring to table 3-1
Table 3-1 CAA is to the absorption of variable concentrations MB in the blood plasma
| MB concentration in the blood plasma (μ mol/l) | OD before the filter | Filter back OD | Adsorption rate (%) |
| 1 2 3 4 6 8 10 15 20 | 0.063 0.114 0.173 0.227 0.340 0.447 0.560 0.805 1.043 | 0.001 0.003 0.009 0.020 0.027 0.038 0.044 0.054 0.069 | 98.4 97.4 94.8 91.2 92.1 91.5 92.2 93.3 93.4 |
To circular treatment of the present invention after 60 minutes in the full blood CAA measure, concentration is 0.002 μ mol/l, illustrates behind the photosensitizer removal device, the methylene blue that adds in the blood plasma is adsorbed.
Can verify that through above-mentioned experiment the blood after the inventive method is handled is clean blood, the inactivation of virus effect is obvious, and less to other Biological indicators influence of blood; The photosensitizer removal device that increases can adsorb the photosensitizer of interpolation, and the maximum photosensitizer that reduces is to the issuable side effect of organism; The present invention adopts the disposable closed system that is isolated from the outside to carry out whole blood and handles, reduced the generation to the blood secondary pollution, the operation that simplifies the operation simultaneously can be in bulk, flowing water and circular treatment whole blood, realize the deactivation of real-time online, guaranteed the safety of blood blood disease.
The inventive method also further can be used for the virus in the deactivation body blood circulation, and further is applied in the treatment of viral disease, as the treatment to virus diseases such as hepatitis B, hepatitis C, AIDS under the prerequisite that guarantees organism safety; And in organ transplantation, be used to remove receptor virus.
Claims (5)
1, virus inactivating method in a kind of extracorporeally circulating blood is characterized in that, comprises the steps:
1) adds anticoagulant in the full blood, set up the full blood blood circulation;
2) with anticoagulated whole blood suction plasma separating unit, after the separation, the direct blowback full blood of erythrocyte, blood plasma enters the mixing delivery pump;
3) in mixing delivery pump, add simultaneously the photosensitizer methylene blue, methylene blue with pump into the blood plasma container after blood plasma mixes; Described mixing delivery pump is a peristaltic pump, and the blood plasma transporting velocity is the 30-150 ml/min, and the photosensitizer input speed is 1% of a blood plasma transporting velocity;
4) illumination meter carries out the illumination deactivation to blended blood plasma in the blood plasma container, quick dose of removal device of blood plasma pump light inlet after the deactivation; Light source is a light-emitting diode group in the described illumination meter, and the light application time of accepting the illumination meter light source after blood plasma flows in the blood plasma container is 60 seconds;
5) photosensitizer removal device absorption methylene blue, blood plasma is drawn back full blood after the deactivation;
6) repeating step 2) to step 5), viral level reduces by 99.99% in full blood.
2, virus inactivating method in the extracorporeally circulating blood according to claim 1, it is characterized in that: described full blood is a storehouse blood, derives from blood station, blood bank, blood bag or blood reservior, perhaps for breaking away from the extracorporeally circulating blood of organism, derives from the blood transfusion pipeline.
3, virus inactivating method in the extracorporeally circulating blood according to claim 1, it is characterized in that: the blood plasma container is the sealed container of two ends band pipeline, and it places illumination meter.
4, virus inactivating method in the extracorporeally circulating blood according to claim 1 is characterized in that: sorbent used in the described photosensitizer removal device is the attapulgite material.
5, according to virus inactivating method in the arbitrary described extracorporeally circulating blood of claim 1 to 4, it is characterized in that: described step 1) and disposable closed system for be isolated from the outside all aseptic to the used pump of step 5), pipeline, plasma separating unit and blood plasma container.
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| CN111481764A (en) * | 2020-05-12 | 2020-08-04 | 上海慧勤医疗器械有限公司 | Virus inactivation device and method for blood extracorporeal circulation |
| CN112461767A (en) * | 2020-11-17 | 2021-03-09 | 中建商品混凝土有限公司 | Automatic high-precision MB value rapid detection device and use method thereof |
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| US4748120A (en) * | 1983-05-02 | 1988-05-31 | Diamond Scientific Co. | Photochemical decontamination treatment of whole blood or blood components |
| CN1249952A (en) * | 1998-10-07 | 2000-04-12 | 上海市血液中心 | Blood plasma virus deactivating method and apparatus |
| CN2497791Y (en) * | 2001-09-03 | 2002-07-03 | 中国人民解放军军事医学科学院野战输血研究所 | Plasma virus inactivator |
| CN2518504Y (en) * | 2002-01-23 | 2002-10-30 | 成都迪康中科生物医学材料有限公司 | Once-used virus inacitivating plasma bag |
| CN1416904A (en) * | 2002-12-02 | 2003-05-14 | 北京市桑浩博科技发展有限公司 | Virus inactivating instrument |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4748120A (en) * | 1983-05-02 | 1988-05-31 | Diamond Scientific Co. | Photochemical decontamination treatment of whole blood or blood components |
| CN1249952A (en) * | 1998-10-07 | 2000-04-12 | 上海市血液中心 | Blood plasma virus deactivating method and apparatus |
| CN2497791Y (en) * | 2001-09-03 | 2002-07-03 | 中国人民解放军军事医学科学院野战输血研究所 | Plasma virus inactivator |
| CN2518504Y (en) * | 2002-01-23 | 2002-10-30 | 成都迪康中科生物医学材料有限公司 | Once-used virus inacitivating plasma bag |
| CN1416904A (en) * | 2002-12-02 | 2003-05-14 | 北京市桑浩博科技发展有限公司 | Virus inactivating instrument |
Also Published As
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| CN1565654A (en) | 2005-01-19 |
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