CN111905167A - A multistage hemodialysis and blood component separation device - Google Patents

Abstract

The invention relates to the technical field of blood processing and detection equipment, and discloses a multi-stage hemodialysis and blood component separation device, comprising a frame, a blood inlet, a dialyzer, a blood outlet pipe, and a filter cavity; the inner upper side of the frame is connected by the left and right sides. A dialyzer with an S-shaped structure is fixedly installed on the rod, and a plurality of groups of dialysis membranes for diafiltration of blood are fixedly installed inside the dialyzer at equal intervals. A set of cell strainers with spherical structure, the bottom of the cell strainer is rotatably connected with a rotating seat, the middle of the rotating seat is downwardly connected with a filter cavity whose bottom is fixed on the ground, and a ring is fixedly installed inside the cell strainer Centrifugal net, a plurality of groups of filter membranes with successively decreasing membrane diameters are fixedly installed inside the filter cavity at equal intervals from top to bottom. The advantages of the invention are: multi-stage dialysis, high accuracy, centrifugal and multi-stage filtration, high separation precision.

Description

A multistage hemodialysis and blood component separation device

technical field

The invention relates to the technical field of blood processing detection equipment, in particular to a multi-stage hemodialysis and blood component separation device.

Background technique

Hemodialysis is one of the ways of renal replacement therapy for patients with acute and chronic renal failure. Generally speaking, before reading blood for dialysis, it is necessary to perform pre-test processing, first take blood samples for dialysis, and then check the specific effect of the dialysis, and then judge whether to apply it to the patient.

Generally, after dialysis of blood, in order to fully understand what changes have occurred in the components of blood after dialysis, whether there are impurities entering or whether certain cells or components are lost, it is necessary to separate and process the blood for detection, so it is necessary to use For blood component separation devices, most of the existing devices separate blood dialysis and component separation, which is not conducive to rapid blood testing and low work efficiency.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a multi-stage hemodialysis and blood component separation device to solve the above-mentioned problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: a multi-stage hemodialysis and blood component separation device, comprising a frame, a blood inlet, a dialyzer, a blood outlet pipe, and a filter cavity; the frame is provided as a hollow structure with an opening at the bottom. The inner upper side of the frame is fixedly installed with a dialyzer with an S-shaped structure through the connecting rods on the left and right sides. The treated blood is input into the dialyzer for dialysis, and a plurality of sets of dialysis membranes for diafiltration of blood are fixedly installed inside the dialyzer at equal intervals. Under the action of gravity, the blood inputted into it passes through the dialysis membrane for many times for multi-stage dialysis treatment. The bottom of the dialyzer on the lowermost side is symmetrically connected with the blood outlet on the left and right sides, the bottom of the blood outlet is connected with the blood outlet pipeline, and the bottom of the blood outlet pipeline is connected with a group of spherical structure cell filter by rotating the installation valve. The bottom of the cell filter is rotatably connected with a rotating seat, and the middle of the rotating seat is connected downward with a filter cavity whose bottom is fixed on the ground. The rotation of the cell filter is convenient for centrifuging the blood input into it. The inside of the cell strainer is fixedly installed with a circle of centrifugal nets, and the rotation of the centrifugal net and the cell strainer facilitates the separation of cells and plasma in the blood. The blood components in the area between the centrifugal net and the inner wall of the cell strainer can be output through the delivery port provided at the lower part of the outer side wall of the cell strainer. The interior of the filter cavity is fixedly installed with a plurality of groups of filter membranes with decreasing membrane diameters from top to bottom at equal intervals. The left and right sides of the filter membrane are connected to the outside with blood bags fixed on the outer wall of the filter cavity. Filtration of the filter membrane Then the blood components remaining on the filter membrane flow into the blood bag along the filter membrane, thereby achieving separation.

As a further solution of the present invention: the dialysis membrane is a semi-permeable membrane and is made of a cellulose membrane or a synthetic membrane.

As a further solution of the present invention: the top of the cell filter is fixedly installed with driven teeth, the side of the driven teeth away from the vertical centerline of the frame is engaged with driving teeth, and the top of the driving teeth is rotated upward through the rotating shaft A servo motor fixed on the inner wall of the frame through the mounting plate is connected, and the driving tooth is driven to rotate by starting the servo motor, thereby driving the cell filter under the driven tooth to rotate.

As a further solution of the present invention, a control valve is arranged at the communication between the blood bag and the filter cavity.

As a further solution of the present invention: the outside of the blood bag is wrapped with a layer of thermal insulation layer, which is used for thermal insulation treatment of the blood input into the blood bag, so as to prevent the activity of the collected blood components from being affected by the temperature being too high or too low, This affects the results of subsequent tests.

Compared with the prior art, the beneficial effect of the present invention is: by passing the blood through the inside of the dialyzer with the S-shaped structure, and then under the action of gravity, the dialysis treatment is carried out through multiple groups of dialysis membranes, thereby realizing multi-stage dialysis operation. ; By setting two groups of cell filters and filter chambers downward on the bottom left and right sides of the dialyzer, the rapid separation and treatment of blood can be achieved; by first centrifuging the blood through the inside of the cell filter, and then passing through multiple groups of cells in turn. filter membrane, so as to facilitate accurate separation of the blood after dialysis; by connecting the top of the cell filter with the rotation of the blood outlet pipe through the rotating installation valve, it is convenient for the installation and disassembly of the hemodialysis and separation device; the present invention The advantages are: multi-stage dialysis, high accuracy, centrifugal plus multi-stage filtration, high separation accuracy.

Description of drawings

FIG. 1 is a schematic structural diagram of a multi-stage hemodialysis and blood component separation device.

FIG. 2 is a schematic structural diagram of a dialyzer in a multistage hemodialysis and blood component separation device.

3 is a schematic top view of a cell filter in a multi-stage hemodialysis and blood component separation device.

Among them: frame 10, blood inlet 11, rotary installation valve 12, dialyzer 13, dialysis membrane 14, blood outlet 15, cell filter 16, driven tooth 17, driving tooth 18, servo motor 19, blood outlet pipe 20, centrifugal Net 21, filter cavity 22, filter membrane 23, blood bag 24, rotating seat 25.

Detailed ways

The technical solution of the present patent will be described in further detail below in conjunction with specific embodiments.

Example 1

1-3, a multi-stage hemodialysis and blood component separation device includes a frame 10, a blood inlet 11, a dialyzer 13, a blood outlet pipe 20, and a filter cavity 22; the frame 10 is configured as a hollow with a lower opening. Structure, the inner upper side of the frame 10 is fixedly installed with a dialyzer 13 in an S-shaped structure through the connecting rods on the left and right sides. , the blood to be treated is input into the dialyzer 13 through the blood inlet 11 for dialysis, and the interior of the dialyzer 13 is fixedly installed with multiple groups of dialysis membranes 14 for diafiltration of blood at equal intervals. The permeable membrane is made of cellulose membrane or synthetic membrane. By setting the dialyzer 13 as a multi-stage S-shaped structure, the blood input into it can pass through the dialysis membrane 14 many times for multi-stage dialysis under the action of gravity. deal with. The blood outlet 15 is symmetrically connected to the left and right sides of the bottom of the bottommost dialyzer 13, and the bottom of the blood outlet 15 is connected to a blood outlet pipe 20. The bottom of the blood outlet pipe 20 is connected to a set of rotating installation valves 12. The cell strainer 16 is a spherical structure, the top of the cell strainer 16 is fixedly installed with driven teeth 17, and the side of the driven teeth 17 away from the vertical centerline of the frame 10 is engaged with the driving teeth 18. The top of 18 is rotatably connected to the servo motor 19 fixed on the inner wall of the frame 10 through the mounting plate through the rotating shaft. By starting the servo motor 19, the driving tooth 18 is driven to rotate, thereby driving the cell filter 16 on the lower side of the driven tooth 17 to rotate. , the bottom of the cell strainer 16 is rotatably connected with a rotating seat 25, and the middle of the rotating seat 25 is connected downward with a filter cavity 22 whose bottom is fixed on the ground. Centrifugal treatment, a circle of centrifugal net 21 is fixedly installed inside the cell strainer 16, and the rotation of the centrifugal net 21 and the cell strainer 16 facilitates the separation of cells and plasma in the blood, and the centrifuged blood falls on the left and right sides of gravity The blood components entering the filter cavity 22 and the area between the centrifugal net 21 and the inner wall of the cell strainer 16 can be output through the feeding port provided at the lower part of the outer wall of the cell strainer 16 . The interior of the filter cavity 22 is fixedly installed with a plurality of groups of filter membranes 23 whose membrane diameters decrease in turn from top to bottom at equal intervals. The blood bag 24 is provided with a control valve at the connection between the blood bag 24 and the filter cavity 22, and the blood components remaining on the filter membrane 23 flow into the blood bag 24 along the filter membrane 23 after being filtered by the filter membrane 23, thereby realizing separation. .

Embodiment 2

On the basis of the first embodiment, the outside of the blood bag 24 is wrapped with a layer of thermal insulation layer, which is used for thermal insulation treatment of the blood input into the blood bag 24 to prevent the collected blood components from being affected by excessively high or low temperature. activity, thereby affecting the results of subsequent tests.

The working principle of the present invention is as follows: when in use, the blood to be treated is firstly input into the dialyzer 13 through the blood inlet 11, and under the action of gravity, it undergoes sufficient dialysis treatment through a plurality of sets of dialysis membranes 14, and then passes through the bottom of the dialyzer 13. The blood outlets 15 on the left and right sides input the dialyzed blood into the cell filter 16 for centrifugation, and are separated from each other through the centrifugal net 21, and then the centrifuged blood falls into the filter cavity 22 under the action of gravity, Then it is filtered in multiple stages through multiple groups of filter membranes 23, so as to facilitate accurate separation of the blood.

The preferred embodiments of the present patent have been described in detail above, but the present patent is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, the present invention can also be made without departing from the purpose of the present patent. Various changes.

Claims (5)

1. A multistage hemodialysis and blood component separation device, comprising a frame (10), a blood inlet (11), a dialyzer (13), a blood outlet pipe (20), and a filter cavity (22); the frame (10) ) is set as a hollow structure with a lower opening, characterized in that the inner upper side of the frame (10) is fixedly installed with a dialyzer (13) in an S-shaped structure through the connecting rods on the left and right sides, and the top of the dialyzer (13) A blood inlet (11) whose end is placed on the outer top of the frame (10) is connected upward on the left side, and a plurality of sets of dialysis membranes (14) for diafiltration of blood are fixedly installed inside the dialyzer (13) at equal intervals. ), located at the bottom of the lowermost dialyzer (13), the left and right sides are symmetrically connected downward with a blood outlet (15), and the bottom of the blood outlet (15) is connected with a blood outlet pipe (20), the blood outlet pipe (20) ) through the rotating installation valve (12) is connected to the bottom of a set of cell strainers (16) in spherical structure, and the bottom of the cell strainer (16) is rotatably connected with a rotating seat (25). A filter cavity (22) whose bottom is fixed on the ground is communicated downward in the middle part, and a ring of centrifugal nets (21) is fixedly installed inside the cell filter (16), and the inside of the filter cavity (22) is from top to bottom. A plurality of filter membranes (23) with decreasing membrane diameters are fixedly installed at equal intervals, and blood bags (24) fixed on the outer sidewall of the filter cavity (22) are communicated with the left and right sides of the filter membranes (23). . 2 . The multi-stage hemodialysis and blood component separation device according to claim 1 , wherein the dialysis membrane ( 14 ) is a semi-permeable membrane and is made of a cellulose membrane or a synthetic membrane. 3 . 3. A multi-stage hemodialysis and blood component separation device according to claim 2, characterized in that a driven tooth (17) is fixedly installed on the top of the cell filter (16), and the driven tooth The side of (17) away from the vertical centerline of the frame (10) is engaged with the driving tooth (18), and the top of the driving tooth (18) is connected upwardly through the rotating shaft and is rotatably connected to the inner wall of the frame (10) through the mounting plate. Servo Motor (19). 4. A multi-stage hemodialysis and blood component separation device according to claim 3, characterized in that a control valve is provided at the connection between the blood bag (24) and the filter cavity (22). 5. A multi-stage hemodialysis and blood component separation device according to any one of claims 1-4, characterized in that, the outside of the blood bag (24) is wrapped with a layer of insulation layer.

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