CN2077300U - Air filter of infusion/blood-transfusion bottle - Google Patents

Abstract

The utility model relates to an air filter of a liquor-transfusion and blood-transfusion bottle, which belongs to a medical injector and is composed of a bottle stopper perforator and an air filter, wherein the bottle stopper perforator is composed of a needle head, a force bearing plate, a liquor outlet pipe and an air inlet bent pipe; the air filter is composed of a casing of the filter, a latex washer, a filtering film, a press cover of the filtering film, and pipe joints. The utility model can be used after being matched with an air catheter, a liquid catheter and an infusion needle need. A micro-porous filtering film with the hole diameter of 0.45 mu m or ultra-fine glass fiber paper can filter foreign matters, such as particles, bacteria, etc., which are harmful to human bodies so as to play the action of effectively purifying air and to ensure the safety and the effectiveness of the clinical liquor transfusion and blood transfusion.

Description

Air filter of infusion/blood-transfusion bottle

Transfusion and blood transfusion bottle air filter is a kind of medication injections utensil.

In recent years, the particle contamination problem in the transfusion has progressively obtained the attention of the world of medicine.Bigger microgranule can cause partial circulatory disturbance, causes blood vessel embolism.Microgranule is too much, causes local the obstruction and blood supply insufficiency, histanoxia and produce edema and phlebitis.When microgranule intrusion lung, brain, kidney, eye etc. are organized, also can cause and encirclement and the propagation that these organize thromboembolism and macrophage cause harm such as granuloma.In addition, microgranule also can cause allergic reaction, the reaction of pyrogen sample.Therefore, behind a large amount of invisible microgranules of naked eyes, the foreign body input human body, its harm is potential secular.In order to control the microgranule in the transfusion, guarantee the quality of finished product medicinal liquid, 85 years versions of Chinese Pharmacopoeia have been listed method and limit that microgranule checks in.Along with improving constantly of the level of production, the injection quality that China produces also improves constantly, and the microgranule inspection generally can both reach officinal requirement in the finished product medicinal liquid.But, in clinical use, also existing some problems, comparison distinct issues are air inlet problems of infusion bottle.Many microgranules are suspending in the atmosphere, mainly be the mixture that dust, fiber, coal smoke, hair, pollen, protozoacide, mycete, spore, antibacterial etc. are formed, they are very light, can be suspended in for a long time in the atmosphere, antibacterial is stiff, mostly attached to above the dust particle greater than 5um.According to surveying and determination, every cubic feet of average that contains the 0.7-22.4um particle of city and rural area atmosphere is respectively 1500000 and 54000.Use more general transfusion device to have two kinds basically at present, a kind of is the latex tubing transfusion device that prolongs usefulness for many years, and air inlet is to adopt common air inlet needle; Another kind is the disposable infusion set of bringing into use in recent years with the non-toxic plastic making, and this transfusion device has a side pipe to make air inlet pipe, and what have in the side pipe makes filter material with materials such as sponge, absorbent cottons, the basic no filter material that has.Like this, when clinical use, when directly using the side pipe air inlet of air inlet needle and no filter material, room air constantly enters infusion bottle, and the microgranule in infusion process increases a lot.Though added filter material in the air inlet pipe of some disposable infusion set, but its filter effect is not really desirable, the hospital that has is in order to reduce the microgranule that injects blood vessel with transfusion, adopted inline final filter, but this method is not also popularized at home very much, and infuse once pollution, the result of use of inline final filter also can be affected.During with latex tubing blood exchange transfusion set and disposable use blood exchange transfusion set, the intake method of transfusion bottle is identical with infusion bottle, moreover blood transfusion the time can not be used the inline final filter of filtering microgranule.

The purpose of this invention is to provide a kind of transfusion and blood transfusion bottle air filter that constitutes by cork perforator, air filter.It filtered airborne dust before air admission transfusion, transfusion bottle by the filter membrane of filter, to guarantee transfusion, the safety of transfusing blood and effective.

Transfusion and blood transfusion bottle air filter is made of cork perforator and air filter.Details are as follows below in conjunction with embodiment: cork perforator constitutes (seeing Fig. 1, Fig. 2) by syringe needle 1, force bearing plate 3, drain pipe 4, intake elbow 8, selects for use medical grade (nontoxic) polrvinyl chloride (PVC) pellet to be injection molded into overall structure through heating.The inlet J of the gas outlet C of the air duct 6 of intake elbow 8 and the medicinal liquid flow pass 2 of drain pipe 4 all designs the both sides (seeing Fig. 1, Fig. 2) at syringe needle 1 middle part, and air outlet slit C is higher than the position (seeing Fig. 1, Fig. 2) of inlet J.The present cork perforator that uses, its air inlet pipe is perpendicular to drain pipe, and air inlet pipe is horizontal direction, because of the connection tube of air filter 10 adopts latex tubing or plastic tube more, the former elasticity is bigger, latter's thermoplasticity is stronger, during clinical use, as installs air filter, because of having certain weight, air filter itself can drop by nature, can cause the air duct sectional area of connection tube 9 to diminish or obturation connection tube 9 bendings, influence air inflow.The present invention is designed to bend pipe with air inlet pipe 8, makes union elbow Z ₂Vertically downward, parallel with drain pipe 4, be not subjected to the sagging naturally influence of air filter when making air admission intake elbow 8, guarantee straightway the entering in the transfusion and blood transfusion bottle of pure air after filtering.The intake elbow 8 of cork perforator, drain pipe 4 adopt plug-in type with being connected of air conduit 9, tube for transfusion 5.For ease of connecting, with the insertion section Z of drain pipe 4, intake elbow 8 ₁, Z ₂Being designed to tapering is the tapering pipe of 1:20.The assembly (see figure 4) that air filter 10 is made up of appendix joint 11, housing 12, filter membrane 13, latex packing ring 14, filter membrane gland 15.Housing 12, filter membrane gland 15 all adopt medical grade polrvinyl chloride (PVC) pellet through the heating injection mo(u)lding, and appendix joint 11 is injection molded into overall structure with housing 12.For latex packing ring 14 is embedded in the inner chamber of housing 12, design has the cannelure H(that can embed latex packing ring 14 to see Fig. 4, Fig. 5 in the inner chamber of housing 12).The design of the center of housing 12 inner chambers has the air duct 19(that communicates with appendix joint 11 to see Fig. 4, Fig. 5), the air after the filtration enters in the transfusion and blood transfusion bottle through passage 19, appendix joint 11, air conduit 9, intake elbow 8, along gas passage 7 from gas outlet C (sees Fig. 1, Fig. 4, Fig. 5).15 designs of filter membrane gland have equally distributed air inlet 16(to see Fig. 7, Fig. 8).The upper surface of filter membrane gland 15 forms concave surface E to lower recess, and the purpose that is designed to concave surface E is to prevent that the upper surface is attached to filter membrane 13, and the filter area that reduces filter membrane 13 influences ventilation.The installation of filter membrane gland 15 is adopted forced, is pressed into for ease of filter membrane gland 15 in the cavity K of housing 12 band taperings to cooperate with latex packing ring 14, filter membrane 13 is fixed the round side Z of filter membrane gland 15 ₄Be designed to the tapering face, form Rotary-table; The circle designs of the concave surface E of filter membrane gland 15 circularizes plane boss 20.The center of filter membrane gland 15 does not have air inlet, its objective is that using the back to insert in the air duct 19 with spillikin throws filter membrane gland 15 fall, and takes out filter membrane 13, filter housings 12 is carried out cleaning and sterilizing and changes filter membrane 13, so that reuse.It is the microporous filter membrane of 0.45um that filter membrane 13 is selected the aperture for use, and available acetyl cellulose filter membrane, cellulose nitrate ester filter membrane, cellulose acetate and celluloid mixed ester filter membrane also can be selected ultra-fine fibre glass paper for use.

Use transfusion and blood transfusion bottle air filter, can improve the air quality that enters in the transfusion and blood transfusion bottle significantly, because the aperture be the microporous filter membrane of 0.45um or ultra-fine fibre glass paper can the filtering harmful to human microgranule and foreign body such as antibacterial, play the effect that effectively purifies air, the safety that guarantees clinical transfusion, blood transfusion is with effective.

The occupation mode of transfusion and blood transfusion bottle air filter has two kinds, and a kind of is to be assemblied in disposable transfusion device or upward use of blood exchange transfusion set; Another kind is to connect on the air inlet syringe needle and latex tubing transfusion device, the supporting use of blood exchange transfusion set, and the filter membrane that only needs pack into before each the use can use repeatedly.

Description of drawings:

Fig. 1 is that transfusion and blood transfusion bottle air filter is always schemed.1 syringe needle, 2 medicinal liquid flow pass, 3 force bearing plates, 4 drain pipes, 5 tube for transfusions, 6 air ducts, 7 gas passages, 8 intake elbows, 9 air conduits, 10 air filters.

Fig. 2 is the structure cutaway view of cork perforator.1 syringe needle, 2 medicinal liquids flow out that pipeline, 3 loads are anti-, 4 drain pipes, 6 air ducts, 8 intake elbows.Fig. 3 is the vertical view of Fig. 2.2 medicinal liquids flow out pipeline, 3 force bearing plates, 6 air ducts, 7 gas passages, 8 intake elbows, 9 air conduits, 10 air filters.

Fig. 4 is the structure cutaway view of air filter.11 appendix joints, 12 housings, 13 filter membranes, 14 latex packing rings, 15 filter membrane glands, 16 air inlets, 19 air ducts.

Fig. 5 is the cutaway view of air filter housing 12 structure charts.11 appendix joints, 12 housings, 19 air ducts.Fig. 6 is the vertical view of Fig. 5,12 housings.

Fig. 7 is the cutaway view of filter membrane gland front view.15 filter membrane glands, 16 air inlets, 20 planar annular boss.Fig. 8 is the vertical view of filter membrane gland.15 filter membrane glands, 16 air inlets, 20 planar annular boss.

Fig. 9 is the latex packing ring.14 latex packing rings.

Claims (6)

1, a kind of transfusion and blood transfusion bottle air filter, it is that the cork perforator that is made of syringe needle 1, force bearing plate 3, drain pipe 4, air inlet pipe 8 and the air filter two parts that are made of appendix joint 11, housing 12, filter membrane 13, latex packing ring 14, filter membrane gland 15 constitute, the air inlet pipe 8 that it is characterized in that cork perforator is bend pipe, and air filter is made of appendix joint 11, housing 12, filter membrane 13, latex packing ring 14, filter membrane gland 15.

2, the housing 12 of air filter according to claim 1 is characterized in that the inner chamber design of housing 12 has the cannelure H that can embed latex packing ring 14.

3, it is characterized in that inserting a section of air conduit 9 according to the described gas-tpe fitting 11 of claim 1 is the gas-tpe fitting that design has tapering.

4, the filter membrane gland 15 of air filter according to claim 1 is characterized in that 15 designs of filter membrane gland have equally distributed air inlet 16, and filter membrane gland 15 is concave surface E with the corresponding surface of filter membrane 13.

5, filter membrane gland 15 its features according to claim 1 are that also the circle designs of concave surface E has planar annular boss 20.

6, its feature of air filter according to claim 1 is that also filter membrane gland 15 is for ease of being pressed into the conical cavity Z of housing 12 ₃In, mould lid 15 is designed to be with conical surface Z ₄Rotary-table.

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