SU1161119A1 - Hydraulic system for preparing and supplying dialysing solution - Google Patents

Abstract

A HYDROSYSTEM FOR PREPARING AND FILING A DIALIZING SOLUTION containing a water preparation unit, a dosing pump, a sealed tank, a deaerator and at least one individual device, including a deaerator and dialyzer, so as to reduce blood foaming in the dialyzer, the system is equipped connected to a sealed tank by a pump for pumping fluid, the inlet of which is connected through a hydraulic choke and an open buffer storage tank placed in the internal cavity of the sealed tank with the outlet of the metering pump, and the outlet is directly connected to the internal cavity of the sealed tank.

Description

This invention relates to medicine and concerns the hydraulic systems used to treat patients with acute and chronic renal failure.

The purpose of the invention is to reduce blood foaming.

The drawing shows the proposed hydraulic system.

The hydraulic system contains a water treatment unit 1, connected to the inlet of the pump-feeder 2, a storage tank 3, which is located in an airtight tank 4, a float 5 and a valve 6. A hydraulic throttle 7 and is connected to the storage tank 3. pump 8. With tank 4, an individual device 9 is connected with a deaerator 10 and a dialyzer 11.

The hydraulic system works as follows.

From the preparation unit 1, the purified and warmed-up water to the required temperature enters the metering pump 2, where it is displaced in a predetermined ratio with the concentrated brine arriving there. From the metering pump 2, the resulting solution enters the storage tank 3 placed inside the tank 4. From the storage tank 3, the solution is fed through the hydraulic choke 7 by pump 8 into the internal cavity of the tank 4. In the suction line between the choke 7 and the inlet of the pump 8 a high zone is formed vacuum, under the action of which the air dissolved in a liquid

the solution takes the form of a mechanical air-liquid mixture, which enters the tank 4, where the air phase is separated and removed

through valve 6. From the tank 4, the deaerated solution under pressure enters the individual device 9, then into the dialyzer 11.

In case the speed of solution preparation by the dosing pump 2 exceeds

the amount of consumption by the dialyzer 11, the level of liquid in the tank 4 rises, the valve 6 under the action of the float 5 closes and the pressure in the tank increases.

At a certain predetermined pressure, the pump doser 2 is turned off, the level of liquid in the tank 4 then rises above the upper edge of the storage tank 3. The liquid is poured into the latter and enters the suction line of the pump 8,

0 thus ensuring the constancy of its mode of operation and continuous deaeration of work.

As the excess solution is consumed through the dialyzer 11, the level of fluid in the tank 4 decreases, the pressure

5 in the tank 4 falls and the pump feeder 2 is turned on.

The proposed technical solution allows to increase the degree of deaeration and at the same time reduce the size of the deaerator of an individual device or completely eliminate

Claims (1)

HYDRAULIC SYSTEM FOR PREPARATION AND DELIVERY OF THE DIALYSIS SOLUTION, comprising a unit for preparing water, a metering pump, an airtight tank, a deaerator and at least one individual device including a deaerator and a dialyzer, characterized in that, in order to reduce foaming of blood in the dialyzer, the system is equipped a pump for pumping fluid connected to a sealed tank, whose inlet is connected to the outlet through a hydraulic throttle and an open buffer storage tank located in the inner cavity of the sealed tank the metering pump house, and the outlet is directly connected to the internal cavity of the sealed tank. 6111911 ”’ HS