RU68897U1 - DEVICE FOR PUMPING INFUSION SOLUTIONS WITH ANTI-AIR VALVE (OPTIONS) - Google Patents

Abstract

The device for infusion of infusion solutions with an anti-air valve is designed for use in medicine, when carrying out intravenous infusions to patients. A significant difference of the proposed device model is that to prevent air embolism (air entering the patient’s vein) when the solution is completed in a bottle or dropper, a valve is installed in the device, consisting of a cone-shaped tapering funnel and a float ball. The valve can be installed on the bottom or middle inside the dropper; inside the spike for piercing the stopper of the solution vial; on the conductive solution to the dropper and the drainage tube from the dropper in a separate container. After completion of the solution in the bottle, the dropper of the device stops due to the overlapping of the mouth of the funnel with a ball-float under the action of gravity and the resulting vacuum below the ball-float, moving the solution below the valve becomes impossible. After replacing the bottle and filling it with a dropper solution, the ball-float pops up, the device starts functioning again. The goal achieved with the use of this device is to eliminate iatrogenic (due to the fault of medical workers) patient injury and reduce the mortality of patients.

Description

The device for infusion of infusion solutions with an anti-air valve is designed for use in medicine, with the intravenous administration of liquid drugs to patients in any branch of medicine where intravenous infusions are carried out.

Three devices for infusion of infusion solutions of different manufacturers, widely used in medical institutions of Russia, were taken as analogues.

Analogue No. 1 is a polymer device for blood transfusion, blood substitutes and infusion solutions with single-use needles PR-21-01- "Synthesis", GOST-25047-87, manufactured in Russia, Kurgan, OJSC "Synthesis".

consists of:

1) droppers with a strainer inside the bottom.

2) a plastic tube with a needle at the end to pierce the stopper of the vial with the solution and conduct the solution from the bottle to the dropper

3) a plastic tube with a needle at the end, for conducting a solution from a dropper into a patient’s vein and a plastic clamp to control the rate of infusion and stop the infusion completely.

Analogue No. 2 is a device for the injection of blood substitutes and infusion solutions, single use PR-21-06-TZMOI, TU 9444-046-12517820-96 produced in Russia, Tyumen, JSC "Tyumen Plant of Medical Equipment and Instruments", consisting of:

1) a plastic cylindrical dropper with a strainer at the bottom and a metal hollow needle in the form of a spike attached to the upper part of the dropper through an adapter to pierce the stopper of the solution vial.

2) a plastic tube with an injection needle at the end to hold the solution from the dropper into the patient's vein and clamp.

Analogue No. 3 - a device for infusion of infusion solutions "KDM", made in Germany, consisting of:

1) a cylindrical plastic dropper with a strainer at the bottom and a plastic spike with a hole in the center for piercing the stopper of the solution vial and introducing the solution into the dropper.

2) the part that diverts the solution from the dropper, consisting of a plastic tube with a needle at the end and a clamp.

The structural disadvantage of the above analogues is that after the solution is finished in the bottle, following the residual solution due to the vacuum created, air enters the device dropper, then air, when the solution ends in the dropper, after the solution remains, enters the outlet part of the device and can continue to into the patient’s vein, causing a formidable complication - an air embolism, to prevent which it is necessary to squeeze the clamp on the outlet part of the device when the solution in the vial is completed.

The essence of the utility model - a device for infusion of infusion solutions with an anti-air valve consists in that, unlike similar devices, the proposed device is equipped with a valve that freely passes solutions through the device, but prevents air from passing through the valve as the solution is completed in the container with the valve. The rest of the device is absolutely no different from analogues.

The valve mechanism consists of a conically tapering funnel (Fig. 1) and a ball freely located above the funnel - a float (Fig. 1).

The valve can be installed in this utility model in four versions, whereby all of them relate to one device, all are intended for infusion of infusion solutions and all provide the same technical result.

Option No. 1: a valve mechanism (valve), consisting of a cone-tapering funnel and a float ball freely located above the funnel, is installed inside the device dropper, in the lower (Fig. 4) or its middle part (Fig. 3), or installed inside a separate containers in the supplying solution from the vial to the dropper to the plastic tube (Fig. 5) or the outlet solution from the dropper to the vein of the patient’s tube.

Option No. 2: in the absence of a tube conducting to the dropper in a device with a plastic needle in the form of a thorn, the valve is installed inside the thorn adjacent directly to the upper part of the dropper (Fig. 6).

Option 3: the valve is installed inside the adapter between the needle and the dropper in the version of the device with a metal needle with the adapter in the upper section of the dropper (Fig. 7).

Option No. 4 the bottom of the dropper of the device is made in the form of a conically-tapering plastic funnel, above which the ball - float is freely located (Fig. 8)

During the infusion, after filling the outlet part of the device and the lower half of the dropper above the valve, the ball emerges - a float, the solution from the vial freely passes into the outlet lower plastic tube, then through the injection needle into the patient's vein. After the solution is finished in the vial, then the solution in the dropper starts to end, but when the rest of the solution passes through the funnel after the last drops of the solution, gravity ball enters the funnel and closes the mouth of the funnel, preventing the solution from moving further downward. The locking action of the valve is enhanced by the created negative pressure at the upper point of the water column in the lower part of the device, retracting the ball-float at the mouth of the funnel. Further advancement of the solution through the device, and after the remnants of the air solution, stops until the empty bottle is replaced with a full one. After replacing the bottle with a full one and filling the dropper, the ball-float floats up and opens the mouth of the funnel, and the device starts functioning again.

Using this device with a valve mechanism, the following advantages are created during operation:

1. Iatrogenic (due to the fault of medical workers) injury of the patient due to air embolism of the patient’s vessels, especially with low venous pressure and a large diameter injection needle or catheter in the patient’s vein, is practically eliminated.

2. The patient eliminates the feeling of anxiety and psychological stress due to the elimination of the need for constant monitoring of the amount of solution in the vial, the introduction of the solution to stop after completion of the solution in the vial on its own.

Claims (4)

1. A device for infusion of infusion solutions, comprising a needle, dropper, a solution supply pipe and a solution discharge pipe, characterized in that the device is equipped with a valve consisting of a cone-tapering funnel and a float ball freely located above the funnel, with the valve installed or inside the dropper or in a plastic tube leading into a dropper to a dropper, in a separate container between a dropper and a needle, or in a plastic tube leading to a solution from a dropper in a separate container. 2. Device for infusion of infusion solutions, including a needle in the form of a spike and a dropper, characterized in that the device is equipped with a valve consisting of a cone-tapering funnel and a float ball located above the funnel, the valve being installed inside a plastic spike adjacent directly to the upper part droppers. 3. Device for infusion of infusion solutions, comprising a needle and a dropper, characterized in that the device is equipped with a valve consisting of a cone-tapering funnel and a float ball freely located above the funnel, the valve being installed inside the adapter between the metal needle and dropper. 4. Device for infusion of infusion solutions, including a dropper, characterized in that the bottom of the dropper is made in the form of a conically-tapering plastic funnel, over which the float ball is freely located.