CN203291320U - Automatic liquid stopping drip chamber - Google Patents

Abstract

The utility model discloses an automatic liquid stopping drip chamber. The automatic liquid stopping drip chamber comprises a drip chamber cover and a drip chamber body. The drip chamber cover is arranged on the top of the drip chamber body. The automatic liquid stopping drip chamber is characterized in that the drip chamber body is composed of an inner drip chamber and an outer drip chamber, the inner wall of the inner drip chamber is combined with the drip chamber cover to form an inner drip chamber cavity, an exhaust hole is formed in the top of the inner drip chamber cavity in a matched mode, the drip chamber cover on the upper portion of the inner drip chamber cavity is provided with a drip chamber liquid inlet pipe, a liquid stopping filter film is arranged on the upper portion of an inner drip chamber liquid outlet at the bottom of the inner drip chamber, the inner wall of the outer drip chamber, the drip chamber cover and the outer wall of the inner drip chamber are combined to form an outer drip chamber cavity, an air inlet hole capable of being opened and closed is formed in the outer drip chamber cavity in a matched mode, and an outer drip chamber liquid outlet is formed in the lower portion of the outer drip chamber cavity. The automatic liquid stopping drip chamber is reasonable in structure, reliable in liquid stopping effect, simple in processing technology and convenient to operate.

Description

An automatic drip stopper

technical field

The utility model belongs to the field of medical equipment, and relates to a medical equipment for intravenous transfusion for clinical patients, in particular to an automatic drip stopper.

technical background

At present, a disposable infusion set is a commonly used medical device, which generally includes a bottle stopper piercer, a drip funnel, a flow regulator, a liquid medicine filter, and an intravenous infusion needle, which are connected in series by an infusion catheter. The medicinal liquid flows in through the bottle stopper piercer, flows into the infusion catheter through the outlet of the dropping funnel, and enters the human body through the medicinal liquid filter and the intravenous infusion needle. In the clinical infusion process, the accompanying person needs to pay close attention to the liquid level of the liquid medicine, otherwise the phenomenon that the liquid medicine in the infusion bottle has been infused and the infusion bottle is not replaced in time or the intravenous infusion needle is pulled out will cause the blood to flow back into the infusion solution If the gas enters the human body, it will cause gas embolism and other adverse consequences. If the patient continues to infuse, the air in the pipeline at the lower end of the drip funnel needs to be disposed of. Usually, the air in the catheter is squeezed back into the drip funnel by squeezing and winding the catheter, or the venous needle is pulled out and the exhaust operation is performed again to replace the venous needle. Perform venipuncture again. The above two methods are all cumbersome and time-consuming, increasing the labor intensity of medical staff and the mental burden of patients.

For the above problems, people have focused on improving the infusion set dripping funnel, and produced a series of automatic liquid-stopping infusion sets. However, the current infusion drip funnel mostly uses buoys to realize the automatic liquid stop function, such as Chinese utility model patent ZL201210284440.5 for a safe automatic hydraulic control opening and closing valve, Chinese patent application 201210067717.9 infusion device drip funnel, and Chinese patent application 201310032521.0 for an automatic stop valve A drop funnel and an infusion set with the drop funnel. This infusion set is to block the infusion tube through the influence of the buoyancy of the medicinal liquid by the buoy to achieve the effect of automatic liquid stoppage. The main defects of the traditional buoy drop bucket are: (1) The liquid stop effect is greatly affected by the composition and purity of the liquid medicine. If there are any impurities or particles, the plastic buoy cannot fit the infusion tube, thus losing the automatic stop liquid (2) The requirements for the tightness of the buoy accessories and the interface of the infusion tube are very high, so the production and processing methods of the above two accessories are very strict, such as the precision of the mold, the selection of raw materials, and the production process. A large amount of verification and control is required for the control of the plastic accessories and whether the plastic parts are deformed after sterilization. A little carelessness will directly cause the product to lose the automatic liquid stop function and cause quality problems; (3) The buoy is set under the dripping funnel. After the liquid level drops to a certain level, the buoy blocks the liquid outlet of the dropping funnel to achieve the purpose of stopping the liquid. In this way, the liquid level usually drops to the lower 1/3 of the dropping funnel cavity or even near the liquid outlet of the dropping funnel. If it is necessary to continue the infusion, the air above the liquid surface needs to be expelled.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the deficiencies of the above-mentioned prior art, and provide an automatic liquid-stopping bucket with reasonable structure, reliable liquid-stopping effect, simple processing technology and convenient operation.

The technical solution of the utility model is an automatic liquid-stop dripping funnel, including a dripping funnel cover and a dripping funnel body, the dripping funnel cover is arranged on the top of the dripping funnel body, and the dripping funnel body is composed of an inner dripping funnel and an outer dripping funnel , the inner wall of the inner dripping funnel is combined with the dripping funnel cover to form the inner dripping funnel chamber, the top of the inner dripping funnel is equipped with a vent hole, the dripping funnel cover on the upper part of the inner dripping funnel is provided with a dripping funnel liquid inlet pipe, and the bottom of the inner dripping funnel The upper part of the liquid outlet of the inner dripping funnel is provided with a liquid-stopping filter membrane; the inner wall of the outer dripping funnel, the lid of the dripping funnel and the outer wall of the inner dripping funnel are combined to form an outer dripping funnel cavity, which is equipped with an air inlet that can be opened and closed. The lower part of the bucket chamber is provided with a dripping bucket liquid outlet.

The liquid-stopping filter membrane is fixed on the supporting surface at the lower part of the inner dripping funnel by ultrasonic welding process, heat sealing process or mechanical pressing process.

An exhaust filter membrane is arranged on the exhaust hole, and the exhaust filter membrane is a hydrophobic air filter membrane, which is fixed on the dripping funnel cover through an ultrasonic welding process or a heat sealing process or a mechanical pressing process.

An intake filter membrane is arranged on the air intake hole, the intake filter membrane is a hydrophobic air filter membrane, and the intake filter membrane is fixed on the dripping funnel cover through an ultrasonic welding process or a heat sealing process or a mechanical pressing process. A gland is arranged outside the air inlet, which can open and close the air inlet.

The dripping funnel cover on the upper part of the dripping funnel body is provided with a liquid medicine injection device.

The utility model adopts the film material to realize the function of automatically stopping the liquid of the dripping funnel, and the liquid stopping funnel has the advantages of simple structure, reliable effect and convenient use. When the liquid medicine is almost infused, under the action of the surface tension of the filter membrane of the inner drip funnel, the force of venous pressure and gravity pressure in the wall of the infusion tube is in balance with the tension of the filter membrane, that is, atmospheric pressure, hydrostatic pressure, human body Under the comprehensive force of the vein, the medicine liquid is kept in the infusion set to achieve the function of automatic liquid stoppage; if you need to continue the infusion, you can directly insert the infusion set into a new infusion bottle, and the vent hole on the inner dripping funnel can automatically stop the liquid. The air in the infusion conduit at the upper end of the dripping funnel and the air in the inner dripping funnel are discharged, so as to realize the continuous infusion function after automatic liquid stop; when all the infusion is completed, open the air inlet on the outer dripping funnel, and the outside air will enter the outer dripping funnel. The bucket cavity, the medicine solution in the dripping bucket and the pipeline at the lower end of the drip bucket is continuously infused into the patient's vein, so as to realize the complete infusion of the medicine solution in the true sense, and avoid the reduction of the curative effect due to the waste of the medicine solution.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a partial enlarged view of the utility model;

The labels in the figure are: 1 dropper cover, 2 dropper body, 3 inner dropper, 4 outer dropper, 5 inner wall of the inner dropper, 6 outer wall of the inner dropper, 7 inner wall of the outer dropper, 8 inner cavity of the dropper, 9 Outer drip hopper cavity, 10 Liquid stop filter membrane, 11 Support surface, 12 Inner drip hopper liquid outlet, 13 Vent hole, 14 Exhaust filter membrane, 15 Drop hopper liquid inlet pipe, 16 Air intake hole, 17 Air intake Filter membrane, 18 glands, 19 drop funnel liquid outlets, 20 liquid medicine injection devices.

Detailed ways

As shown in Figures 1 and 2, an automatic liquid-stop dripping bucket includes a dripping bucket cover 1 and a dripping bucket body 2, the dripping bucket cover 1 is arranged on the top of the dropping bucket body 2, and the dripping bucket body 2 is dripped Composed of bucket 3 and outer drip bucket 4, the inner wall of the inner drip bucket 5 is combined with the drip bucket cover 1 to form the inner drip bucket cavity 8, the top of the inner drip bucket cavity 8 is equipped with a vent hole 13, and the drip bucket cover on the upper part of the inner drip bucket cavity 8 1 is provided with a dripping funnel liquid inlet pipe 15, and the upper part of the inner dripping funnel liquid outlet 12 at the bottom of the inner dripping funnel 3 is provided with a liquid-stop filter membrane 10; the outer dripping funnel inner wall 7, the dripping funnel cover 1 and the inner dripping funnel outer wall 6 are combined The outer dripping chamber 9 is formed, and the outer dripping chamber 9 is equipped with an openable air inlet 16, and the lower part of the outer dripping chamber 9 is provided with a dripping outlet 19.

As shown in FIG. 2 , the liquid-stopping filter membrane 10 is fixed on the support surface 12 at the lower part of the inner dropping funnel by ultrasonic welding process, heat sealing process or mechanical pressing process. An exhaust filter membrane 14 is arranged on the exhaust hole 13, and the exhaust filter membrane 14 is a hydrophobic air filter membrane, which is fixed on the dripping funnel cover 1 by an ultrasonic welding process or a heat sealing process or a mechanical pressing process. Air inlet filter membrane 17 is arranged on the air inlet hole 16, and inlet filter membrane 17 is the hydrophobic air filter membrane, and inlet filter membrane 17 is fixed on the drip funnel cover 1 by ultrasonic welding process or heat sealing process or mechanical pressing process. A gland 18 is arranged outside the air inlet 16 to open and close the air inlet 16 .

In the embodiment of the utility model, the air inlet 16 is closed during the infusion process. When the infusion of the medicinal liquid in the infusion bottle is completed, the liquid-stopping filter membrane 10 at the bottom of the inner dripping funnel 3 automatically stops the liquid. If the patient needs to replace the infusion bottle When continuing to infuse, the infusion set with the dropping funnel can be directly inserted into the new infusion bottle, at this moment, the vent hole 13 in the inner dripping funnel chamber 8 can automatically put the dripping funnel into the liquid pipe 15 and the inner dripping funnel The air in chamber 8 is discharged to the outside, and as the air in the infusion set is gradually discharged, the medicinal liquid in the new infusion bottle will continue to flow into the inner dripping chamber chamber 8, and then flow into the outer dripping chamber chamber 9 through the inner dripping outlet 12. In the infusion catheter, so as to realize the continuous infusion function after automatic liquid stop.

When all the infusion process is completed, due to the existence of the automatic liquid stop function, the medicinal solution in the drip funnel and the infusion tube under the drip funnel will not be able to continue to infuse into the patient's vein. The stomata 16 is opened, so that the outside air will enter the outer dripping funnel cavity 9 after being filtered by the air intake filter membrane 17, so that the medicinal solution in the dripping funnel and its lower end infusion catheter can be continuously infused into the patient's vein, realizing the true sense of infusion. The complete infusion of the liquid medicine avoids the reduction of the curative effect due to the waste of the liquid medicine.

Claims (8)

1. automatic liquid-stopping dropping funnel, comprise dropping funnel lid and dropping funnel body, the dropping funnel lid is arranged on the top of dropping funnel body, it is characterized in that, described dropping funnel body is comprised of interior dropping funnel, outer dropping funnel, and interior dropping funnel inwall and dropping funnel lid are in conjunction with dropping funnel chamber in forming, and interior dropping funnel top of chamber is combined with steam vent, the dropping funnel on top, interior dropping funnel chamber covers and is provided with the dropping funnel feed tube, and the interior dropping funnel liquid outlet top of interior dropping funnel bottom is provided with only liquid filter membrane; Outer dropping funnel inwall, dropping funnel lid and interior dropping funnel outer wall are in conjunction with forming outer dropping funnel chamber, but outer dropping funnel chamber is combined with the air inlet of folding, and bottom, outer dropping funnel chamber is provided with the dropping funnel liquid outlet.

2. automatic liquid-stopping dropping funnel according to claim 1, is characterized in that, described only liquid filter membrane is fixed on the supporting surface of interior dropping funnel bottom by ultrasonic welding process or heat seal process or mechanical process for pressing.

3. automatic liquid-stopping dropping funnel according to claim 1, is characterized in that, is provided with the exhaust gas filter film on described steam vent, and the exhaust gas filter film is the hydrophobic air filter membrane.

4. automatic liquid-stopping dropping funnel according to claim 3, is characterized in that, the exhaust gas filter film is fixed on dropping funnel by ultrasonic welding process or heat seal process or mechanical process for pressing and covers.

5. automatic liquid-stopping dropping funnel according to claim 1, is characterized in that, is provided with the inlet air filtration film on described air inlet, and the inlet air filtration film is the hydrophobic air filter membrane.

6. automatic liquid-stopping dropping funnel according to claim 5, is characterized in that, the inlet air filtration film is fixed on dropping funnel by ultrasonic welding process or heat seal process or mechanical process for pressing and covers.

7. according to claim 1 or 5 or 6 described automatic liquid-stopping dropping funnels, is characterized in that, air inlet is outside equipped with gland, can open, seal air inlet.

8. automatic liquid-stopping dropping funnel according to claim 1, is characterized in that, the dropping funnel on described dropping funnel body top covers and is provided with liquid injection device.

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