RU110277U1 - DEVICE FOR COLLECTION AND TREATMENT OF WOUNDED BLOOD - Google Patents

Abstract

 1. A device for collecting and processing wound blood, containing a vacuum pump and a separator for separating red blood cells from the wound blood, characterized in that the pump for moving the washing solution, wound blood and washed red blood cells in the lines of the device is made in the form of an artificial heart pump, and the device includes clamps of highways connected to the control unit with the ability to set the direction of movement of the working fluid. ! 2. The device for collecting and processing wound blood according to claim 1, characterized in that the clamps of the lines are made in the form of clamps of a pipeline with a pneumatic actuator and with a control unit in the form of a pressure distributor, and in addition to the vacuum pump, the compressor is included in the device.

Description

The device allows the collection, filtration and purification of the patient’s own blood, followed by its separation into two fractions - red blood cells and other components. This separation is carried out by the method of high-speed centrifugation (separation of liquid solutions). The separator is essentially a centrifuge in which red blood cells, due to their higher specific gravity, are separated from the blood serum, its other fractions and related solutions. After separation and washing, the purified erythrocyte fraction enters the patient’s bloodstream.

Known used in clinical practice, the domestic device for collecting and processing wound blood "Agate" [1], selected as a prototype. The device is equipped with a vacuum pump for collecting wound blood and a separator. Blood is supplied to the separator line by a peristaltic roller pump. Such pumps, which are widely used in medical practice, have a housing with an inner cylindrical surface, to which blood hoses are pressed by planetary rotating rollers. For the deformation of the elastic - elastic hoses used in such pumps, the required amount of force exerted on them by the rollers is very significant. The distribution of this force is uneven over the hose section in the contact zones with the rollers due to mechanical inaccuracies and non-identical conditions for their interaction. This, as practice has shown, leads to damage to the functional state of red blood cells, and, as a result, to a decrease in the efficiency of the device as a whole.

The problem the utility model aims to solve is to increase the efficiency of the device for collecting and processing wound blood by creating conditions for transporting blood in highways in which the possibility of injury to red blood cells is minimized.

Like the device selected as a prototype, the inventive device for collecting and processing wound blood contains a vacuum pump in the line for the collection of wound blood and a separator for separating red blood cells from it.

The difference from the prototype is that in the composition of the inventive device traumatic in relation to red blood cells, the peristaltic pump is replaced by an artificial heart pump (hereinafter referred to as the main pump "). The pump’s working volume is divided into 2 chambers, in which two plastic containers from an individual set for wound blood and for washed red blood cells are placed. These containers are alternately affected by rarefaction or increased pressure created in the pump chambers, due to which they either suck in or push out the working fluid, while the movement of the flows is regulated by a group of clamps that overlap the gaps of the disconnected lines. Due to this, liquids from other lines flow through the central highway in the right direction, namely:

- wound blood;

- washing solution;

- washed red blood cells.

Five clamps are enough for switching the named flows, but their number may be different. The operation of the main pump is regulated by the control unit, which includes a vacuum pump and compressor, and the sequence of operations is regulated by the central processor according to a special program. The presence in the main pump of two chambers: “dirty” - for wound blood and “clean” - for washed red blood cells allows you to separate the paths of movement of wound blood and washed red blood cells and ensure maximum red blood cell purity.

Figure 1 presents a diagram of a variant of a specific implementation of the inventive device for collecting and processing wound blood.

The device contains a cardiotomy reservoir 1 for collecting and rough cleaning of wound blood, a two-chamber main pump 2 with a “dirty chamber” A for wound blood and a “clean” chamber B for washed red blood cells, a separator 4 (made in the form of a centrifuge), a container for washed red blood cells 5 , a waste container 6, a container with a washing solution 7, clamps 8, 9, 10, 11 and 12, a vacuum pump 13, a compressor 14 and a control unit 15.

It should be noted that the clamps 8, 9, 10, 11 and 12 can be controlled by a pneumatic actuator from the control unit 15, which in this case acts as a pressure distributor.

A device for collecting and processing wound blood works as follows. Under the action of the vacuum created by the vacuum pump 13, blood from the wound accumulates in the cardiotomy reservoir 1, undergoing coarse filtration. When clamp 8 is opened, blood flows into the container of the “dirty chamber” A of pump 2 under the influence of vacuum in this chamber. After that, the clamp 8 closes, the clamp 9 opens, and the blood from the pump is displaced by increased pressure into the separator 4, and the "separation" mode is simultaneously activated. When the separator is filled, at the command of the blood level sensor in the separator, the clamp 9 closes, the clamp 10 opens, and the washing solution flows under its own weight into the separator 4, the red blood cells are washed, the waste is discharged into the tank 6. A vacuum is created in the “clean chamber” B of pump 2 , clamp 11 opens and washed red blood cells fill the container for receiving red blood cells in chamber B. Clamp closes And, clamp 12 opens, excessive pressure is applied to the “clean chamber” of pump 2, and red blood cells are forced into the container of clean red blood cells 5 for blood transfusion to a patient.

The industrial applicability of the claimed device is confirmed by the possibility of its multiple manufacture in industrial production using standard equipment, modern materials and technology.

Literature

1. RF patent №2284194 03/29/2005

Claims (2)

1. A device for collecting and processing wound blood, containing a vacuum pump and a separator for separating red blood cells from the wound blood, characterized in that the pump for moving the washing solution, wound blood and washed red blood cells in the lines of the device is made in the form of an artificial heart pump, and the device includes clamps of highways connected to the control unit with the ability to set the direction of movement of the working fluid. 2. The device for collecting and processing wound blood according to claim 1, characterized in that the clamps of the lines are made in the form of clamps of a pipeline with a pneumatic actuator and with a control unit in the form of a pressure distributor, and in addition to the vacuum pump, the compressor is included in the device.