Automatic exhaust, only liquid, accurate filter deviceTechnical field
The utility model relates to medical instruments field, especially a kind of automatic exhaust, only liquid, accurate filter device.
Background technique
In clinical transfusion, medical fluid enters dropping funnel and enters back into round mistake traditional disposable precision filter infusion setOccur when filter or generates " air bubble ", meanwhile, because pipe inner wall minute bubbles are also easily adsorbed on pipe inner wall surface, it is not easyDischarge.Air bubble caused by above-mentioned such as enters patient's body, and " air embolism " etc. is easily caused to endanger.Some enterprises are in order to keep awayExempt from patient and see inside filter there is " air bubble ", accurate filter is placed at the terminal spiral mouth of infusion apparatus, sky is causedGas bubble flows into patient's body without any Prevention method, and bigger injury is brought to patient.On the other hand, existingDisposable precision filter infusion set be not also vented automatically, the comprehensive function of automatic liquid-stopping.
Nursing staff is before infusion, it is necessary to air bubble in catheter of transfusion system emptied as far as possible, it is artificial that bubble mistake is dischargedThe mode of the minute bubbles for the being adsorbed on pipe inner wall a brief period of time need to constantly be played pipe inner wall by journey, and the minute bubbles of absorption is made to float up to dropIn struggling against on liquid level, but pipe inner wall is easily adsorbed again in minute bubbles floating-upward process, cause the artificial air-discharging process of nursing staffTrouble is time-consuming, is unfavorable for promptly being infused and giving emergency treatment to a patient, while increasing work load to medical staff.
Disposable precision filter infusion sets all at present are vented in clinical transfusion commonly using following method:
1) it is inverted dropping funnel ventilation；
2) it is vented with finger bomb tube wall；
3) traditional round accurate filter is tilted into 45 degree of exhausts；
4) traditional round accurate filter is placed on infusion apparatus bottom, the residual air that cannot exclude is made to enter troublePerson's human body causes the injury to patient；
5) worry about air enters human body, and medical fluid is not finished all and just pulls out intravenous needle, therefore therapeutic effect is not achieved, and makesAt liquid waste；
6) after air enters traditional round accurate filter, it not can be carried out second of exhaust, it can only be again again to diseasePeople punctures infusion, when inputting Chinese patent drug, traditional round type filter is blocked due to particle and is forced to stop infusion, is also had to againSecondary puncture again to patient is infused；
7) it causes to admit air into because nursing not in time or having forgotten to pull out the intravenous needle (after medical fluid stream is complete) of patient on hand sometimesIn human body, blood vessel blood back is caused to bring injury to patient, therefore increase stress to nursing staff, while patient being caused to fearUnbearably；
8) traditional round accurate filter, only once exhaust is the air that can not be discharged in filter, is not drainedNet air bubble enters human body and directly damages to patient.
In view of the foregoing, overcome the defects of above technology, provide a kind of can empty the automatic of air in medical fluid completelyExhaust, only liquid, accurate filter device become this field technical problem urgently to be resolved.
Summary of the invention
The shortcomings that the purpose of the utility model is to overcome the prior arts provides a kind of automatic exhaust, only liquid, secondary filterDevice device, practical and convenient, securely and reliably, exhaust is thoroughly clean, realizes automatic exhaust, automatic liquid-stopping and secondary filter, and dropLow nursing Risk.
In order to solve the above technical problems, the technical solution of the utility model are as follows: automatic exhaust, only liquid, accurate filter dressIt sets, is connected to the conduit of transfusion fluid, the difference is that: it includes filter body, is offered on the filter bodyFeed pathway, first chamber, second chamber and the liquid outlet channel being sequentially communicated, the feed pathway and liquid outlet channel respectively with instituteConduit connection is stated, secondary filter is provided between the first chamber and second chamber and stops liquid film piece, on the filter bodyIt is also provided at least one connection first chamber and extraneous vent, is set between the vent and the first chamberIt is equipped with gas-liquid separation diaphragm.
By above technical scheme, the first chamber and second chamber extend vertically, and the first chamber has oppositeThe first side being arranged and second side, institute's vent are set to the first side of the first chamber, and the feed pathway is set to describedSecond side of first chamber, and the feed pathway and the vent are arranged respectively close to the upper end of the first chamber,The second chamber is arranged close to the lower end of the first chamber, and the liquid outlet channel is set close to the upper end of the second chamberIt sets.
By above technical scheme, the second chamber is set to second side of the first chamber.
By above technical scheme, the feed pathway includes the first vertical portion being connected with the conduit and described in connectingThe first horizontal portion of first vertical portion and first chamber.
By above technical scheme, the junction of the first horizontal portion and the first chamber is provided with a baffle arrangement,The baffle arrangement includes the horizontal segment being set to above the first horizontal portion and extends straight down along the horizontal segment perpendicularStraight section.
By above technical scheme, the liquid outlet channel includes the second vertical portion being connected with the conduit and described in connectingSecond horizontal part of the second vertical portion and second chamber.
By above technical scheme, it is also provided in the filter body between the first chamber and ventThird chamber, the third chamber is arranged close to the upper end of the first chamber, and the gas-liquid separation diaphragm is set to described theThe junction of three chambers and the first chamber.
By above technical scheme, the diameter of the vent is 0.4mm~1.5mm.
By above technical scheme, the aperture of the gas-liquid separation diaphragm is 0.2 μm~0.25 μm.
By above technical scheme, the aperture that the secondary filter stops liquid film piece is 2 μm~5 μm.
Compare the prior art, the beneficial features of the utility model are as follows: the automatic exhaust, only liquid, accurate filter device, it is realWith conveniently, securely and reliably, exhaust is thoroughly clean, automatic exhaust, automatic liquid-stopping and secondary filter is realized, convenient for medical staffClinical position, alleviate the working strength and pressure of medical staff, and reduce nursing Risk, improve nursing quality.
Detailed description of the invention
Fig. 1 is the utility model embodiment structural schematic diagram；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is a kind of the schematic diagram of the section structure of embodiment of the utility model；
Fig. 4 is the schematic diagram of the section structure of the utility model another kind embodiment；
Fig. 5 is the connection relationship diagram of the utility model embodiment and infusion apparatus；
Wherein: 1- feed pathway (the first vertical portion 101-, 102- first horizontal portion), 2- first chamber (2a- first chamberThe first side, second side of 2b- first chamber, the upper end of 2c- first chamber, 2d- first chamber lower end), 3- second chamber(upper end of 3a- second chamber), 4- liquid outlet channel (the second vertical portion 401-, the second horizontal part of 402-), 5- conduit, 6- precision mistakeFilter stops liquid film piece, 7- vent, 8- gas-liquid separation diaphragm, 9- baffle arrangement (901- horizontal segment, 902- vertical section), 10- theThree chambers, 11- bottle plug puncture unit, 12- dropping funnel, 13- transfusion needle.
Specific embodiment
The utility model is described in further detail below by specific embodiment combination attached drawing.
Fig. 1 to Fig. 5 is please referred to, the utility model embodiment is vented automatically, stops liquid, accurate filter device, with transfusion fluidConduit 5 be connected to, the difference is that: it includes filter body, offers on the filter body and to be sequentially communicatedFeed pathway 1, first chamber 2, second chamber 3 and liquid outlet channel 4, the feed pathway 1 and liquid outlet channel 4 are led with described respectivelyPipe 5 connects, and secondary filter is provided between the first chamber 2 and second chamber 3 and stops liquid film piece 6, on the filter bodyBe also provided at least one connection first chamber 2 and extraneous vent 7, the vent 7 and the first chamber 2 itBetween be provided with gas-liquid separation diaphragm 8.
Preferably, the first chamber 2 and second chamber 3 are vertical extends, and the first chamber 2, which has, to be oppositely arrangedFirst side 2a and second side 2b, institute's vent 7 are set to the first side 2a of the first chamber, and the feed pathway 1 is set to instituteState second side 2b of first chamber, and the feed pathway 1 and the vent 7 are respectively close to the upper end of the first chamber2c setting, the second chamber 3 are arranged close to the lower end 2d of the first chamber, and the liquid outlet channel 4 is close to second chamberThe upper end 3a of room is arranged.
Preferably, the second chamber 3 is set to second side 2b of the first chamber.
Preferably, the feed pathway 1 includes the first vertical portion 101 being connected with the conduit 5 and connect described firstThe first horizontal portion 102 of vertical portion 101 and first chamber 2.
Preferably, in order to avoid medical fluid directly impacts gas-liquid separation diaphragm 8, referring to FIG. 4, the first horizontal portion 102The junction of the first chamber 2 is provided with a baffle arrangement 9, the baffle arrangement 9 includes being set to the first horizontal portionThe horizontal segment 901 of 102 tops and the vertical section 902 extended straight down along the horizontal segment 901.
Preferably, the liquid outlet channel 4 includes the second vertical portion 401 being connected with the conduit 5 and connect described secondSecond horizontal part 2 of vertical portion 401 and second chamber 3.
Preferably, the third being also provided in the filter body between the first chamber 2 and vent 7Chamber 10, the third chamber 10 are arranged close to the upper end 2c of the first chamber, and the gas-liquid separation diaphragm 8 is set to described theThe junction of three chambers 10 and the first chamber 2.
Preferably, the diameter of the vent 7 is 0.4mm~1.5mm.
Preferably, the aperture of the gas-liquid separation diaphragm 8 is 0.2 μm~0.25 μm.
Preferably, it is 2 μm~5 μm that the secondary filter, which stops the aperture of liquid film piece 6,.
Preferably, it is 2 μm~5 μm that the secondary filter, which stops the aperture of liquid film piece 6,.Medical fluid accumulates in first chamber 2 to be risenWhen up to forming the pressure of 0.04MPa~0.08MPa, medical fluid could pass through secondary filter and stop liquid film piece 6 into second chamber 3It is interior.
In some embodiments, it is 2 μm that secondary filter, which stops the aperture of liquid film piece 6, and medical fluid passes through secondary filter and stops liquid film piece 6Required pressure be 0.08MPa.In some embodiments, it is 3 μm that secondary filter, which stops the aperture of liquid film piece 6, and medical fluid passes through precisionThe required pressure that filtering stops liquid film piece 6 is 0.07MPa.In further embodiments, it is 5 μ that secondary filter, which stops the aperture of liquid film piece 6,M, it is 0.04MPa that medical fluid, which passes through secondary filter to stop the required pressure of liquid film piece 6,.
The connection of the conduit 5 of the utility model embodiment and infusion apparatus, infusion apparatus includes conduit 5, bottle plug puncture unit 11, dropping funnel12 and transfusion needle 13, conduit 5 be sequentially connected bottle plug puncture unit 11, dropping funnel 12, automatic exhaust, only liquid, accurate filter device andTransfusion needle 13.
The utility model embodiment realizes automatic liquid-stopping and secondary filter.When medical fluid enters the first chamber of accurate filterWhen room 2, the air in medical fluid is discharged by 7 almost all of vent, and gas-liquid separation diaphragm 8 makes the medical fluid in first chamber 2The separation of liquid gas is automatically formed, since secondary filter stops the tension force effect of liquid film piece 6, medical fluid is accumulated in first chamber 2 and is increased toWhen forming sufficiently large pressure, medical fluid stops liquid film piece 6 by secondary filter and enters in second chamber 3, stops liquid film by secondary filterThe particle deposition that piece 6 filters is in the bottom of first chamber 2.At the end of infusion, pressure caused by the liquid volume in first chamber 2Less than when stopping liquid film 6 aequum of piece across secondary filter, remaining medical fluid can be then isolated in first chamber 2 power, be realized automaticOnly liquid avoids human vas blood back and " thrombus " occurs, is conducive to the clinical position of medical staff, alleviates medical staff'sWorking strength and pressure, reduce shield suffer between the therefore medical tangle that causes, and reduce nursing Risk, improve nursingQuality.Gas-liquid separation diaphragm 8 can effectively stop air-borne bacteria or particle to enter automatic exhaust, only liquid, accurate filter deviceIn, while gas being facilitated to be discharged from vent 7, when medical fluid is accumulated in first chamber 2, bubble in medical fluid then can be fromBe automatically drained out in vent 7, realize automatic exhaust, do not need by tilt automatic exhaust, only liquid, accurate filter device intoRow exhaust, clinical use are very convenient.
The utility model embodiment realizes automatic exhaust twice.By being vented automatically, only liquid, on accurate filter deviceVent 7 realize automatic exhaust for the first time；Then by being vented automatically, only liquid, the accurate mistake in accurate filter deviceFilter stop liquid film piece 6 make medical fluid accumulation in first chamber 2 after, then from automatic exhaust, only liquid, accurate filter device upper air-ventSecond of exhaust automatically is realized in road 7, has been truly realized in medical fluid without " air bubble ", and is vented thoroughly, completely, will not be because openingIt when beginning to be infused or changes when bottle is infused again and leads to the problem of " air bubble ", keep patient very safe in integrally infusion.
The working principle of the utility model embodiment are as follows: when the medical fluid enters automatic exhaust, only liquid, accurate filter deviceWhen, begin through automatic exhaust, only liquid, the exhaust of accurate filter device upper end vent 7；Since secondary filter stops liquid film piece6 tension force effect, medical fluid accumulates in first chamber 2 when being increased to form sufficiently large pressure, and medical fluid is stopped by secondary filterLiquid film piece 6 enters in second chamber 3, flow to after the medical fluid liquid level in second chamber 3 rises to liquid outlet channel 4, and through conduit 5When at transfusion needle 13, so that it may be infused to patient, after infusion, remaining medical fluid stops liquid film piece 6 due to secondary filterTension force effect, which is shut off, realizes automatic liquid-stopping.If being infused again, plugging another bottle of liquid medicine can continue to be infused, all automatic exhausts,Only liquid, secondary filter process as when first bottle of infusion, therefore, the automatic exhaust, only liquid, accurate filter device is defeatedRealized when liquid automatic exhaust, automatic liquid-stopping and secondary filter twice etc. functions.
The above content is the further description for combining specific embodiment to do the utility model, and it cannot be said thatThe specific implementation of the utility model is only limited to these instructions.For the ordinary skill people of technical field belonging to the utility modelFor member, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, all should be considered asBelong to the protection scope of the utility model.