SU1657193A1 - Device for oxygenation of infusion agent - Google Patents

Abstract

The invention relates to the field of medicine, namely to devices for the transfusion of infusion means and allows to increase the efficiency of the mass transfer process in the infusion means. The device contains a cylinder with inlet and outlet nozzles, a nozzle for relieving overpressure, a filter New in the device is the execution of a perforated cone and partition opposite the installed perforated cone and partition walls in the bottom part of the cylinder, forming an annular cavity between them, and the cone and the partition is made integral with the walls of the cylinder and interconnected by means of a hole coaxially with the vertical axis of the cylinder and the filter, over the entire surface of the cone evenly sized puppies punched holes. 1 hp f-ly, 2 ill. Yo

Description

This invention relates to medicine and can be used to oxygenate infusion agents.

The aim of the invention is to increase the efficiency of the mass transfer process.

FIG. 1 shows a device for oxygenation of infusion means, a general view; in fig. 2 - partition construction.

The device consists of a hollow cylinder 1, in the lower part of which a perforated cone 2 and a partition wall 3 are additionally installed opposite, interconnected by a central hole 4 coaxial with the vertical axis of the cylinder. On the cone made perforations 5, placed evenly over the entire surface of the cone. The opposability of the installation of the cone and the partition consists in the fact that the expanding part of the cone 2, whose diameter is equal to the diameter of the cylinder 1, is directed upwards, and the convergent part is connected to the partition 3, which may have a small taper, facing the lower part of the cylinder, with him and the cone at the same time. This arrangement of the cone and the septum allows the formation of an annular cavity 6., while the partition blocks access of oxygen to the lower part of the cylinder. In the annular cavity 6, oxygen is supplied through the inlet 7. In the lower

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part of the cylinder is made integral with the housing filter 8, located inside the lower part of the cylinder under the partition 3 and connected to the outlet 9. The upper part of the cylinder is connected to the container filled with infusion through the inlet 10. On the side surface of the upper part of the cylinder a pressure relief pipe 11, the upper part of the cylinder located above the perforated cone, is filled with an infusion means 12. The cone and the septum are made so that they constitute a single th from the cylinder walls. The device is made, for example, of glass.

The device works as follows.

A sterile tube is connected to nozzle 7, through which medical 100% oxygen gas under pressure of 30 kPa is fed into cavity 6. Oxygen then flows through the perforations 5 of the cone 2 to the upper part of the cylinder 1, from where its excess is discharged through the nozzle 11.

Through the inlet 10, the cylinder is filled, for example, with half the infusion means 12. After oxygenation, the infusion means through the central opening 4 of the partition 3 enters the filter 8 and further to the outlet nozzle 9. If the infusion means is crystalloid, then 3 minutes after the start of oxygenation the patient is transfused, since with oxygenation less than 3 minutes the mass transfer process has not ended, and over 3 minutes the indicators of gas composition and acid-base composition do not significantly change. A pressure of 30 kPa is chosen empirically. At pressures above 30 kPa, the bubbling process acquires the effect of boiling with the release of the infusion agent through the pipe 11. The pressure below 30 kPa leads to the injection of the infusion agent into the annular cavity 6 through the perforations 5, resulting in a decrease in the number of functioning holes 5, the efficiency of mass exchange process.

If the infusion means is blood, lymph and other foaming solutions, the oxygenation mode changes: a sterile clamp pre-clamped to the nozzle 7. through which medical 100% gaseous oxygen under a pressure of 30 kPa is fed into cavity 6. Through the inlet 10, the cylinder is filled, for example, with half of the infusion means 12, after which the nozzles 10 and 11 are closed with plugs. The tube that connects the outlet 9 and the patient is pre-clamped. Then, cn in the clamp, oxygen is supplied through

pipe 7 into the cavity 6 and then through the perforations 5 of the cone 2 into the cylinder for 15 s. Stopping the supply of oxygen through the pipe 7, remove the plug from the pipe 11 through which the excess goes

oxygen and carbon dioxide. Next, the plug is again put on the pipe 11, and through the pipe 7 again oxygen is supplied for 15 s. This cycle is repeated for 3 minutes, and then, after stopping the supply of oxygen and opening the nozzle 11, the transfusion of the infusion means to the patient through the outlet nozzle 10 begins. In the case of an additional volume, the described operations are repeated.

Claims (2)

1. A device for oxygenation of infusion means, made in the form of a cylinder with inlet and outlet nozzles, a nozzle for relieving excess pressure and a filter, characterized in that, in order to increase the efficiency of the mass transfer process, perforated truncated cone, oriented downward with a smaller base, and conical partition, oriented upward with a smaller base, with a cavity bounded by the inner wall the cylinder and the outer walls of the perforated truncated cone and conical partition, connected to the oxygen supply nozzle, the cone and the partition are made at the same time and interconnected by means of an aperture, the axis of which coincides with the axis of the cylinder, the cone and the partition; parts of the cylinder, and the output - in the bottom. 2. The device according to claim 1, wherein the perforated truncated cone and conical partition are made integral with the walls of the cylinder. FIG. 2