SU1028337A1 - Device for preparing dyalisis solution - Google Patents

Abstract

A DEVICE FOR PREPARING A DIALIZING SOLUTION, containing storage tanks and a tank for mixing the components of the dialyzing solution, component dispensers, a water dispenser, connecting pipes, characterized in that; ensuring the regulation of the ionic composition of blood plasma in hemodialysis amphibious by adding a predetermined number of regulating doses of water in each cycle of preparing a dialysis solution; the dose-dose controller is equipped with an adjustment reservoir divided into two cavities by the membrane as a bypass valve and limiting the number of regulating doses of water associated with the CC 1Mutator, and the cavities of the regulating reservoir are communicated through the switch with the plumbing I network and with the reservoir for mixing; ntov, wherein any adjusting the volume of the tank is 10% i 5V- volume dispenser vody.i

Description

The invention relates to the field of medical technology, namely to hemodialysis equipment, which is used in medicine for the treatment of patients with renal insufficiency.

A device for preparing a dialysing solution is known, which contains storage tanks and a tank for changing the components of the dialysis solution, component dispensers, water dispenser, connecting pipelines l.

However, the absence of an additional regulating device in the water dispenser does not allow, during hemodialysis, to regulate the volumes of water doses in time and individually for each patient and, thus, to ensure the preparation of the dialyzing solution of the required composition. The use of such a device for the preparation of dialysing solution leads to a decrease in the clinical effect of hemodialysis due to the limited capabilities of individually adjusted for each patient regulation of the ionic composition of blood plasma.

Also known are devices for preparing dialysis fluid, containing reservoirs for storing components of the dialysis fluid, a reservoir for mixing the components, and dispensers for the components and water in the form of bypass valves and dosing tanks with sensors that determine the filling levels of the dosing tanks with components and water C2 1 and 3.

However, the presence of sensors in these devices with an error of level control leads to a decrease in the accuracy of dosing of the components and water in the dosing reserves — and, thus, reduces the accuracy of the composition of the prepared dialyzing solution c. whole

. The aim of the invention is to provide for the regulation of the ionic composition of blood plasma during hemodialysis by adding a predetermined amount of regulating doses of water in a cylinder at any time during the preparation of dialyzing plant dose ...

This goal is achieved by the fact that in a device for preparing a dialysis solution containing a reserve of storage and a tank for mixing the components of the dialysis solution, component dispensers, dispenser, connecting pipes, the water dispenser is equipped with an adjustment reservoir divided into two cavities by a switch in the form of relief valves and limiter on the number of regulatory doses of water associated with. switch as well the cavities of the regulating reservoir are communicated via the crgmutator with the water supply

with the network and with the tank for the mix of the Bc and the components, and the volume of the adjusting tank is 5 to 10% of the volume of the water dispenser.

The drawing shows the basic scheme of the device.

The device comprises reservoirs 1 for storing components of the dialysis solution, a reservoir 2 for mixing the components, dispensers 3 components, a dispenser 4 for water and connecting pipes 5-9.

Water dispenser 4 consists of a batch tank 10 with a membrane 11 that separates the tank 10 into insulated cavities 12 and 13, an adjusting tank 14 with a membrane 15 that divides the tank 14 into isolated cavities 16 and 17, overflow valves 18 21, regulating overflow valves 22-25 and limiter 16 of the number of regulating doses of water associated with regulating bypass valves 22-25. The capacity of the regulating tank is equal to the capacity of the dosing tank 10.

The inputs of the dispensers 3 components of the dialyzing solution are connected by pipelines 5 to the corresponding tanks 1 for storing these components, and the outlets of the dispensers are connected through pipes b and 7 to the inlets of the valves 18, 19, 22 and 23. These water inlets are connected to these same inputs through pipeline 8 The outlet of the valve 18 and the inlet of the valve 20 are connected to the cavity 12 of the batching tank 10, and the outlet of the valve 19 and the inlet of the valve 21 are connected to the cavity 13 of this tank. The outlet of the regulating valve 22 and the inlet of the regulating valve 24 are connected to the cavity 16 of the regulating tank 14, and the outlet of the regulating valve 23 and the inlet of the regulating valve 25 are connected to the cavity 17 of the reservoir 14. The outlets of the valves 20, 21, 24 and 25 are connected via pipe 9 to the reservoir 2 for mixing the components.

The device works as follows.,

In the initial state of the membrane device 11 and 15 are in the lowest position, the cavity 12 is filled with a dose of dialysis fluid, the cavity 16 is filled with a regulating dose of water, the valves 18-25 are closed.

At the beginning of the operation cycle of the device, the overflow valves 19 and 20 are opened and in dispensers 3 doses of components are produced, which through pipelines b and 7 and open valve 19 enter the cavity 13 Membrane 11 moves upwards Dialysis fluid from cavity 12 through valve 20 and pipe 9 moves into tank 2; At the same time, water enters the cavity 13 from the water supply network through pipe 8 and valve 19; in the cavity 13, another dose of dialysis solution is prepared by mixing the water with the doses of the components. During the preparation of the dose of the dialyzing solution in the cavity 13 and during the transfer of the dose of the dialyzing solution from the cavity 12 to the tank 2, the commands 23 and 24 are opened by the commands / coming from the limiter 26. The water from the water supply network 16 comes to the cavity 17 the adjusting dose of water moves through the valve 24 and the pipeline 9 into the reservoir 2. The membrane 15 moves upwards. After the upper position of the membrane 15 has been reached, the regulating dose of water from the half-size 16 fully moves to the reservoir 2, and in the cavity 17 the next regulating dose of water is prepared. The valves 23 and 24 then close and the valves 22 and 25 open. Water enters the cavity 16 from the water supply network through pipeline 8 and valve 22. Membrane 15 moves from top to bottom. The adjusting dose of water from cavity 17 moves to reservoir 2 through valve 25 and pipe 9. Subsequently, the process of preparing control doses of water is repeated. according to the supervolving commands of limiter 2.6, each prepared regulating dose of water is fixed in restrictor 26, which, according to the amount of regulating doses prepared during one cycle, compares this amount with the specified value by niem. After reaching the set value, the preparation of regulating doses of water is stopped and the valves 22-25 are closed. After the membrane 11 is moved to its highest position, the cycle of preparing a single dose of the dialyzing solution ends. The dose of dialysis solution from cavity 12 is completely transferred to tank 2, where it is mixed with regulating doses of water, and preparation of another dose of dialysis solution is completed in cavity 13. Valves 19 and 20 are closed, valves 18 and 21 are opened, and the preparation of the next dose of dialysis solution begins. The doses of the components from the dispensers 3 along with the water from the plumbing network flow into the cavity 12, the membrane 11 moves from top to bottom. The dialysis solution from the cavity 13 moves through the valve 21 and the pipeline, 9 into the tank 2. At the same time, valves 22 and 25 or valves 23 and 24 are triggered sequentially and, accordingly, regulating doses of water are prepared in cavity 16 or 17, which are then fed to tank 2 where they are mixed with a dose of dialysis fluid. The number of prepared adjusting doses of water is limited by the limiter 26. After moving the metal bridge 11 to the lowest position, the valves 18 and 21 are closed and the device returns to the initial state. In operation, the KOMi devices receive dispensers 3 through pipelines 5 from tanks 1. Thus, in the proposed device, the composition of the dialyzing solution is quickly and individually controlled by each patient through appropriate changes in the number of regulatory doses of water in each dose preparation cycle. dialysis solution at the operator's commands. The composition of the dialysate being prepared depends on the ratio of the volume of the dose of dialysate to the regulating doses of water. The volume of the dose of dialysate is determined by the capacity of the dosing tank, the volume of each regulating dose of water is determined by the capacity of the regulating gie tank. The number of regulating doses of water in the kagad cycle of preparing a dose of dialysate is determined by the limiter depending on the operator's commands, depending on these commands, in each cycle of the device's operation, a certain amount of adjustment doses of water, i.e. the required dilution of the prepared dialysate is made. Testing the layout of the device showed that, in contrast to the known devices, the use of the proposed one would allow to regulate the composition of the prepared dialysing solution in the physiologically necessary range of concentrations of sodium ions (120 meq / l - 150 meq / l), t, e, approximately + 10% from the mean concentration (135 meq / l),

Claims (1)

A DEVICE FOR PREPARING A DIALYSIS SOLUTION, comprising storage tanks and a mixing tank for components of a dialysis solution, component dispensers, a water dispenser, connecting pipelines, characterized in that, for the purpose of _; to ensure regulation of the ionic composition of blood plasma during hemodialysis by adding a predetermined number of regulating doses of water in each cycle of preparation of the dialysis solution, the doser is equipped with an adjusting reservoir separated by a membrane into two cavities, a switch in the form of bypass valves and a limiter of the number of regulating doses of water connected to the commutator, and the cavities of the regulating reservoir are communicated through the commutator with a water supply network • and with a reservoir for mixing components, m volume adjustment tank was 5 '- 10% of the water dispenser. Yu WITH m>