JPS60933Y2 - Blood purification and water removal device using hemofiltration - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a blood purification and water removal device using filtration.

In recent years, hemofiltration has been attracting attention as a treatment method for patients with kidney disease such as chronic renal failure.This method uses a filtration membrane to remove waste products from the blood along with water, without using dialysate. Blood purification is achieved by replenishing the blood components with a replenisher in place of the discharged alcoholic liquid.

□This hemofiltration method has various advantages over conventional hemodialysis methods, such as requiring dialysate and being able to remove large amounts of water without side effects. 1. It is difficult to appropriately control the amount of replenishment fluid that is replenished in accordance with the amount of liquor removed by blood filtration, and the development of a device that can safely and reliably perform such control has been awaited.

This idea was developed in view of the above points, and the sake liquid storage chamber in which the sake liquid is stored and the replenishment liquid storage chamber in which the replenishment liquid is stored are integrated, and the sake liquid and the replenishment liquid are integrated. Each storage chamber is configured to be able to move up and down together in response to changes in the total weight of the replenisher and the replenisher, and the position of the up-and-down movement is detected and the replenisher is sent out from the replenisher storage chamber in accordance with the detected value. By controlling at least one of the replenisher pump and the furnace liquid pump that introduces the liquor liquid into the liquor storage chamber, the following can be achieved:
It is an object of the present invention to provide a blood purification and dewatering device that can appropriately control the amount of liquor liquid and the amount of replenisher, has a simple configuration, and is highly reliable.

Next, an embodiment of the device according to this invention will be described with reference to the drawings.

::1:1st: is an explanatory diagram showing the configuration of the device according to this invention. In the figure, 1 is a filter, and a filter membrane 2 is provided in the filter 1.

The filter 1 is connected to the blood vessel of the patient 3 via a blood collection pipe 4 and a blood injection pipe 5, and the blood injection pipe 5 is connected to join the replenisher injection vibro.

This replenisher injection vibro is connected to a replenisher reservoir chamber 8 via a replenisher pump P1, and this reservoir chamber 8 is composed of a plurality of replenisher bottles 8a arranged in parallel in this embodiment. The entire storage chamber 8 is suspended by a spring 9.

On the other hand, the filter 1 has a furnace liquor pipe 1 for discharging liquor liquor.
0 is attached, and this furnace liquid pipe 10 is connected to a furnace liquid storage chamber 11 via a furnace liquid pump P2.

This furnace fluid storage chamber 11 is suspended below the replenisher fluid storage chamber 8, and the furnace fluid storage chamber 11 and the replenisher fluid storage chamber 8 are integrally movable up and down against a spring 9.

Therefore, the replenisher liquid storage chamber 8 and the furnace liquid storage chamber 11 are provided within the weight balance device 12.

Further, a discharge pipe 13 is attached to the liquor storage chamber 11, and this discharge pipe 13 is connected to a waste tank 14 via a waste pump P3.

Further, a position detection device 15 is attached to a part of the weight balance device 12, and in this embodiment, the detection device 15 includes vertical position detection switches 15a and 1.
5b is used, the detection device 15 being connected to the speed control device 16.

This control device 16 controls the speed of the replenisher pump P1, and in this embodiment, when the upper position detection switch 15a is ON, the speed is low, when the lower position detection switch 15b is ON, the speed is high, and when both are OFF, the speed is medium. It consists of a simple control circuit that is said to be fast.

Next, the operation of the apparatus with the above configuration will be explained.

First, the discharge pump P3 is operated to empty the furnace liquid storage chamber 11 and fill the replenishment liquid storage chamber 8 with a predetermined amount of replenisher, for example 20/.

The weight balance device 12 with this replenisher in it
The intermediate speed position of the position detection device is determined based on the balanced position, that is, the stopped position.

Next, the blood collection pipe 4 and the injection pipe 5 are connected to the blood vessels of the patient 3, and while the blood is passing through the filter 1, the replenisher pump P□ and the reactor fluid pump P2 are operated.

In this way, the liquor liquid is discharged from the filter 1 into the furnace liquid storage chamber 11, and at the same time, an amount of replenishment liquid approximately equal to the amount discharged into this storage chamber 11 is injected into the patient 3 from the replenishment liquid storage chamber 8. .

If the amount injected into the patient 3 and the amount discharged into the storage chamber 11 are constant, the weight balance device 12 is positioned at a fixed position. Then, the total weight of the weight balance device 121, that is, the replenisher liquid storage chamber 8 and the furnace liquid storage chamber 11 becomes lighter, and the weight balance device 12 is raised by the spring force of the spring 9.

As the weight balance device 9 rises, the upper position detection switch 15a is turned on, and the replenisher pump P1 is switched from medium speed to low speed.

Therefore, the amount of liquor discharged increases compared to the amount of replenishment fluid injected,
The weight balance device 12 becomes heavier and lowers to switch again from low speed to medium speed.

Further, if the amount of liquor liquid discharged into the oven liquid storage chamber 11 exceeds the amount of replenisher liquid injected, the weight balance device 12 becomes heavy and the device 12 is lowered.

By lowering the device 12, the lower position detection switch 15b is turned on, and the replenisher pump P is switched from medium speed to high speed.

Therefore, the amount of replenishment liquid injected increases compared to the amount of liquor discharged, and the weight balance device 12 becomes lighter, rises, and is switched from high speed to medium speed again.

By repeating these operations, the amount of replenisher injected and the amount of liquor discharged are kept constant.

On the other hand, in order to remove the water from patient 3's edema, it is sufficient to operate the waste pump P3 to drain a predetermined amount of liquor from the furnace liquid storage chamber 11 over a predetermined period of time. It is possible to remove water without water.

The weight balance device 12 in the above embodiment has a configuration in which the replenisher fluid storage chamber 8 and the furnace fluid storage chamber 11 are integrally suspended by a spring 9, but as shown in FIG. , 11, various configurations can be considered as long as the configuration can detect changes in the total weight of the components.

For example, as shown in FIG. 2A, storage chambers 8 and 1 are integrated.
1 can be placed on a spring 19 for balance.

In addition, as shown in FIG. 2B, the storage chamber 8, which is integrated,
11 can be floated in a water tank 20 for balance, and furthermore, as shown in FIG. I can do it.

As explained above, according to this invention, the furnace liquid storage chamber in which the liquor liquid is stored and the replenishment liquid storage chamber in which the replenishment liquid is stored are integrated, and the total weight of the liquor liquid and the replenishment liquid is The storage chambers are constructed so that they can move up and down as a unit in response to fluctuations in
Since the configuration is configured to control at least one of the replenisher pump that sends replenisher fluid out of the replenisher reservoir chamber and the furnace fluid pump that introduces furnace fluid into the furnace fluid reservoir chamber, the amount of furnace fluid and replenisher fluid can be controlled by a computer, etc. This method has the advantage of being able to perform appropriate control without the use of a device, and because of its simple configuration, the device is highly reliable, and has the effect of safely and reliably purifying blood.

Further, in this invention, if a predetermined amount of water is discharged from the furnace liquid storage chamber in a predetermined period of time, a large amount of water can be easily and safely removed.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram schematically showing the configuration of one embodiment of the device according to the invention, and FIG. 2 is an explanatory diagram schematically showing a weight balance device in another embodiment. 2... i-filtration membrane, 8... replenisher storage chamber, 1
DESCRIPTION OF SYMBOLS 1... Furnace liquid storage chamber, 12... Weight balance device, 15... Position detection device, 16...
...control device, Pl...replenisher pump, P2
・・・・・・Furnace liquid pump.

Claims (1)

[Scope of utility model registration request] There is a blood purification and water removal device using a hemofiltration system, which filters blood through a filtration membrane and replenishes the blood components with a replenisher in place of the discharged alcoholic liquid to purify and remove water from the blood. The liquor storage chamber where the liquor discharged from the membrane is stored and the replenishment fluid storage chamber where the above-mentioned replenishment fluid is stored are integrated! and a position detection device for detecting the vertical movement position of the weight balance device. , controlling the flow rate of at least one of a replenisher pump that sends out the replenisher from the replenisher storage chamber and a furnace liquid pump that introduces the liquor into the liquor storage chamber in accordance with a detection signal from the position detection device; A blood purification and water removal device using hair filtration, comprising: a control device;