Disposable transfusion device safe in utilization
Affiliated technical field
The present invention relates to medicine and hygiene fields, is for clinical when the patient is carried out venous transfusion, and when transfusion was nearly finished, the shutoff infusion pipeline made infusion pipeline liquid stop to flow automatically, prevents the intravital disposable full liquid device safe in utilization of air admission patient.
At present at medicine and hygiene fields, be extensive use of disposable infusion set the patient carried out venous transfusion, have intravenously administrable easy to operate, improve curative effect, disposable use, prevent the positive role of cross infection.Yet common disposable infusion set when failing in time to pull out pin in case transfusion finishes, can cause the interior air of blood backflow or pipeline just to enter into patient's intravenous owing to do not possess automatic closing organ, can cause the blood coagulation thromboembolism, threat to life when serious.Owing to this kind reason, whether patient and medical personnel must pay close attention to transfusion constantly and finish simultaneously, so that in time pull out pin, bring nervous pressure for patient and medical personnel.
Summary of the invention
In order to prevent the appearance of above situation, the technical solution adopted for the present invention to solve the technical problems is: on the basis of common disposable infusion set, its dropping funnel built-in a kind of can be at transfusion automatic shutoff transfusion device infusion pipeline when nearly finishing, make the medicinal liquid in the infusion pipeline of liquid outlet lower end stop to flow, thereby end is infused automatically, reaches to prevent the intravital safe infusion utensil of air admission patient.
Specific practice is, on the basis of common disposable infusion set, in its dropping funnel, place a conical floating plug, during transfusion, with hands extruding dropping funnel Lower Half, floating plug is floated, liquid flows into dropping funnel from space between floating plug and dropping funnel, drains dropping funnel Lower Half air, and floating plug rises under the buoyancy of liquid effect, stay open liquid outlet, realize infusion process, when infusing approaching finishing, floating plug is along with liquid level descends, under atmospheric pressure and floating plug gravity pressure, fitting fully in floating plug and dropping funnel gap, reaches the effect that tightly blocks liquid outlet, make air not enter into transfusion catheter under the liquid outlet, thereby prevent the air admission human body, realized safe infusion.
Through existing safe transfusion system is observed, generally when transfusion device vertically and not shakes, all can play the effect of shutoff infusion pipeline in the transfusion device transfusion when finishing, but when clinical transfusion, it is unavoidable having the situation of rocking transfusion device a little, will cause the object generation drift of shutoff so, in case drift takes place, the problem of air admission infusion pipeline will take place, and causes new unsafe factor.
The present invention adopts the shutoff of circular cone floating plug plug-in type, it is longer to have the shutoff binding face, play good plugging action, simultaneously owing to the applying face length, fit closely, be oval taper, as long as at transfusion device not under the situation of rocking of the property put upside down, the drift of floating plug generally can not take place, and plays the safe effect of better shutoff.
In addition, the present invention only installs a safety device in the portion on the lower side of dropping funnel, when many bottles of transfusions, when the bottle liquid medicine of being totally lost need change second bottle liquid medicine, only need transfusion device down-off actuator is barred up, push the dropping funnel bottom slightly with hands, because the effect of pressure, can again floating plug upwards be floated and get final product, open flow regulator, can carry out many bottles and infuse, compact conformation does not need complicated outside parts.
That the present invention has is simple in structure, production and processing easily, clinical manipulation is easy to drain characteristics such as inner air tube, safety are good.Can be according to actual needs, after transfusion is all over, dropping funnel upper end flow-stopping clip is stuck, be pushed near dropping funnel dropping funnel lower end actuator locked again, with shears upper and lower connecting duct is cut off, then on the one hand transfusion device has been carried out the destruction of unmaking, obtain on the other hand that remaining medicinal liquid (approximately 3-5ml) keeps sample in one airtight, the free of contamination dropping funnel, under adapt circumstance, deposit, can can test by the medicinal liquid that keeps sample in the clinical treatment dispute that causes because of transfusion, be beneficial to the short sanction of medical tangle.
The present invention also has characteristics to be, floating plug limits by the height of a spacing ring to its rising, in order to avoid medicinal liquid is too many when filling dropping funnel, causes floating plug floating to the dropping funnel upper end, and the situation of drop is observed in influence.
Need to prove that floating plug of the present invention also can be the spherical shape floating plug.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a dropping funnel safety device sketch map.
Fig. 2 is coniform floating plug sketch map.
Fig. 3 is the sketch map that medicinal liquid keeps sample.
The specific embodiment
As shown in Figure 1, the dropping funnel safety of disposable transfusion device safe in utilization comprises from closed system: flow-stopping clip 1, dropping funnel 2, spacing ring 3, coniform floating plug 4, coniform floating plug cover 5, flow regulator 6.
When carrying out the clinical vein transfusion, the transfusion device needle for inserting bottle is communicated with medicinal liquid, medicinal liquid flows in dropping funnel 2 by conduit, overlap 5 space by floating plug 4 and floating plug again, flow to the dropping funnel lower end, treat that the lower end medicinal liquid is full of, drain the lower end air, and make medicinal liquid at height at spacing ring more than 3, can be by the normal infusion program earlier with the intravenous needle vein blood vessel that punctures, this moment, medicinal liquid will enter in patient's body by conduit, liquid medicine filter and venoclysis needle.
If floating plug 4 and 5 one-tenth closed conditions of floating plug cover when medicinal liquid can't pass through, only need flow regulator 6 cuts out, with hands extruding dropping funnel lower end, floating plug 4 will be thrown off floating plug cover 5 and upwards float under the air pressure that extruding produces, produce the gap, medicinal liquid can be filled to the dropping funnel lower end by the gap.
During transfusion, floating plug 4 suspends under the buoyancy of medicinal liquid all the time, keeps the gap with floating plug cover 5, and medicinal liquid will unimpededly flow down, and realizes transfusion.The height that spacing ring 3 floats for restriction floating plug 4 in order to avoid floating plug rises too high with liquid level, is observed drop and influence.
Transfusion nearly finishes, and floating plug 4 is fitted until overlapping 5 with floating plug fully along with the medicinal liquid liquid level falls gradually, and final plant closure, and medicinal liquid stops to flow, and then air will can not enter dropping funnel lower end and infusion pipeline.Change other one bottle of then transfusion again this moment if desired, only need another bottle liquid medicine and transfusion device needle for inserting bottle are connected, shut flow regulator, with hands extruding dropping funnel lower end, floating plug 4 is floated, make medicinal liquid enter dropping funnel, and drain dropping funnel lower end air, just can infuse again again.
To transfusion end fully, after floating plug 4 is closed with 5 applyings of floating plug cover, flow-stopping clip 1 folder of dropping funnel upper end is dead, dropping funnel lower end flow regulator 6 being pushed into liquid outlet place, dropping funnel lower end closes dead again, take off transfusion device, cut off flow-stopping clip 1 upper end conduit and flow regulator 6 lower end conduits with shears, residual medicinal liquid in the dropping funnel just realizes in the dropping funnel of sealing that medicinal liquid has kept sample at this moment.In the process that keeps sample, transfusion device is also destroyed.