CN115089790A - An extracorporeal circulation system for blood purification equipment and its automatic priming method - Google Patents

Abstract

The invention relates to the technical field of blood purification, in particular to an extracorporeal circulation system of blood purification equipment and an automatic pre-priming method thereof. The extracorporeal circulation system of blood purification equipment includes a dialyzer and an extracorporeal circulation pipeline, and the dialyzer passes through a semipermeable membrane. It is divided into a blood chamber and a dialysate chamber, and is provided with an upper end port of the blood chamber and a lower end port of the blood chamber that communicate with the blood chamber, an upper end port of the dialysate and a lower end port of the dialysate communicated with the said dialysate chamber; The extracorporeal circulation pipeline includes a venous pipeline and an arterial pipeline, one end of the arterial pipeline is connected to the upper port of the blood chamber, and one end of the venous pipeline is connected to the lower port of the blood chamber. The problems existing in the prior art can be effectively solved, the operation steps of dialysis treatment preparation can be simplified to the greatest extent, the probability of misoperation can be reduced, and the operation labor intensity of medical staff can be reduced.

Description

An extracorporeal circulation system for blood purification equipment and its automatic priming method

technical field

The present invention relates to the technical field of blood purification, in particular to an extracorporeal circulation system of blood purification equipment and an automatic priming method thereof.

Background technique

The dialyzer for blood purification treatment is composed of a plurality of hollow fiber membranes, a shell and an end cap. The hollow fiber membrane divides the dialyzer into two chambers. The inside of the hollow fiber membrane is the blood chamber, and the space between the hollow fiber membrane and the shell is Dialysate chamber. The hollow fiber membrane is a semi-permeable membrane, and there are countless tiny pores on the membrane. Small and medium molecules can pass through these pores, but macromolecular substances such as blood cells cannot pass through these pores. In the process of blood purification treatment, by introducing the patient's arterial blood into the dialyzer composed of the above-mentioned hollow fiber membranes, the blood in the blood chamber and the dialysate in the dialysate chamber exchange substances through diffusion/convection in the dialyzer to remove The metabolic waste in the patient's blood and the excess water in the body are maintained, and the electrolyte and acid-base balance are maintained, and then the purified blood is returned to the body from the venous end to achieve the purpose of blood purification in the body.

The extracorporeal circulation pipelines and dialyzers used in blood purification treatment are generally disposable consumables. In order to facilitate sterilization, transportation and storage, the pipelines and dialyzers are usually packaged in dry conditions. Therefore, before starting treatment, it is necessary to pre-flush the extracorporeal circulation pipeline and dialyzer with normal saline or dialysate generated online by hemodialysis equipment, so as to achieve the purpose of removing air in the pipeline and dialyzer, so as to avoid air residue. In the treatment, it enters the human body to form an air embolism and endangers the life of the patient. At the same time, it can also avoid the coagulation of the dialyzer caused by the tiny air bubbles adhering to the hollow fiber membrane of the dialyzer.

The current pre-flushing method before blood purification treatment is: install the pump tube of the arterial pipeline of the extracorporeal circulation pipeline into the blood pump, connect one end of the arterial pipeline to the normal saline or dialysate port, and connect the other end to the dialyzer At the arterial end, connect the two ends of the venous line of the extracorporeal circulation line to the venous end of the dialyzer and the waste bag respectively, start the blood pump, and set the flow rate to 80-100ml/min, so that the normal saline flows through the dialyzer through the blood pump. venous end. At this time, the blood pump speed should not be too fast, otherwise the exhaust effect of the pipeline and the dialyzer will be affected. During the pre-flushing process of the blood chamber of the dialyzer, it is necessary to tap the dialyzer and adjust the liquid level of the arteriovenous jug manually or through the liquid level adjustment pump, so that the gas in the hollow fiber membrane of the dialyzer and in the pipeline is sufficient. Drain. Because the liquid inside and outside the dialyzer membrane needs to form convection, the dialyzer needs to be turned over at this time, so that the part connecting the dialyzer and the arterial pipeline should face upwards, so as to remove the gas in the dialysate chamber (outside the membrane) of the dialyzer. After the dialyzer dialysate chamber pre-flushing is completed, the arterial end and the venous end of the extracorporeal circulation pipeline need to be short-circuited to perform a closed cycle pre-flushing. The inside of the hollow fiber membrane of the dialyzer is ultrafiltered to the outside of the membrane for transmembrane flushing, and at the same time, the gas in the dialyzer and the pipeline is further discharged. At this point, the flushing process is completed. In the above-mentioned priming process, it is necessary to manually adjust the blood pump flow, turn over the dialyzer, adjust the fluid levels of the arterial jug and venous jug, and set various parameters according to different priming stages. The above, and the operator cannot leave the equipment during this process, so when the pre-flushing process of dialysis preparation is the busiest time in the dialysis room, the operation of the medical staff is very labor-intensive, and it is often prone to misoperation, such as Lead to insufficient pre-flushing or rupture of the dialyzer membrane, etc., affecting the treatment effect and causing unnecessary losses.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide an extracorporeal circulation system of blood purification equipment and an automatic pre-priming method thereof, which can effectively solve the problems existing in the prior art and simplify the operation steps of dialysis treatment preparation to the greatest extent. , reduce the probability of misoperation, and reduce the labor force of medical staff.

In order to achieve above-mentioned technical effect, the present invention adopts following technical scheme:

In the first aspect, the present invention provides an extracorporeal circulation system for blood purification equipment, including:

A dialyzer, the dialyzer is divided into a blood chamber and a dialysate chamber by a semipermeable membrane, and is provided with an upper end interface of the blood chamber and a lower end interface of the blood chamber that communicate with the blood chamber, and a dialyzer that communicates with the dialysate chamber. a liquid upper end interface and a dialysate lower end interface, wherein the blood chamber upper end interface is higher than the blood chamber lower end interface, and the dialysate upper end interface is higher than the dialysate lower end interface;

and an extracorporeal circulation pipeline, the extracorporeal circulation pipeline includes a venous pipeline and an arterial pipeline, one end of the arterial pipeline is connected to the upper end interface of the blood chamber, and one end of the venous pipeline is connected to the blood chamber lower interface.

Further, a peristaltic pump is provided on the arterial pipeline.

Further, an air monitor is provided on the venous line.

Further, an arterial jug is connected in series on the arterial pipeline, and a venous jug is connected in series on the venous pipeline, and an arterial pressure monitoring component and a venous pressure monitoring component are respectively provided on the arterial jug and the venous jug.

Further, the tops of the arterial pot and the venous pot are provided with openings, and the openings are connected with a pressure monitoring tube, and the end of the pressure monitoring tube is provided with a pressure monitor, and the pressure monitor is used to monitor the arterial. At the same time, the upstream of the pressure monitor is also provided with a water blocking part.

Further, the water blocking member includes an outer casing and a gas channel formed inside the outer casing, one end of the outer casing can be connected to the arterial pot or the venous pot, and the other end of the outer casing can be connected to the The pressure monitoring tube and the gas channel are used to connect the pressure monitoring tube and the venous or arterial jug, and the water blocking component is also provided with a water blocking film in the gas channel, and the water blocking film can be used for gas passes through.

Further, the venous line comprises a first venous segment upstream of the venous line and a second venous segment downstream of the venous line and used to communicate the venous jug and the dialyzer, the first venous segment. One end of the segment is connected to the bottom end of the venous kettle, and one end of the second venous segment penetrates the venous kettle from the top of the venous kettle and partially extends to the interior of the venous kettle;

Further, one end of the second venous segment located in the venous pot is between 1/2-4/5 of the height of the venous pot.

Further, the arterial line includes a first arterial segment upstream of the arterial line and used to communicate the dialyzer and the arterial jug, and a second arterial segment downstream of the arterial line, the first artery One end of the segment is connected to the bottom end of the venous jug, and one end of the second arterial segment penetrates the venous jug from the top of the venous jug and partially extends to the interior of the arterial jug;

Further, one end of the second arterial segment located in the arterial pot is between 1/2-4/5 of the height of the venous pot.

Further, it also includes a blood chamber liquid supply unit and a dialysate liquid supply unit, the blood chamber liquid supply unit is arranged at the end of the venous line and provides the first priming fluid for the extracorporeal circulation system, and the dialysate The output end of the liquid supply unit is connected to the lower end port of the dialysate and provides the second priming fluid for the extracorporeal circulation system.

Further, a waste liquid recovery unit is also included, the waste liquid recovery unit is communicated with the extracorporeal circulation pipeline and the dialyzer, and is used for collecting the first priming liquid and the second priming liquid flowing through the extracorporeal circulation system.

Further, the waste liquid recovery unit includes a first waste liquid collector and a second waste liquid collector, and the first waste liquid collector is provided at the end of the arterial pipeline and communicated with the arterial pipeline, The second waste liquid collector communicates with the upper end port of the dialysate.

In a second aspect, the present invention also provides an automatic priming method for an extracorporeal circulation system of a blood purification device, characterized in that it includes the following steps:

S1: constructing a first priming passage and a second priming passage, and connecting the blood chamber liquid supply unit and the dialysate liquid supply unit to the head ends of the first priming passage and the second priming passage, respectively, connecting the waste liquid recovery unit to the ends of the first pre-flushing passage and the second pre-flushing passage;

S2: Pre-flushing the first pre-flushing passage:

Controlling the blood chamber liquid supply unit to provide a first priming liquid for the first priming passage, and making the first priming liquid flow along the first priming passage and finally enriched to the waste liquid recycling unit;

S3: Pre-flushing the second pre-flushing passage:

Controlling the dialysate liquid supply unit to provide a second priming liquid for the second priming passage, and making the second priming liquid flow along the second priming passage and finally be enriched to the waste liquid recovery unit;

Wherein, the sequence of steps S2 and S3 can be exchanged or performed simultaneously.

Further, the first pre-flush is any one of sterile physiological saline or dialysate, and the dialysate is a dialysate that has been sterile filtered at least once.

Further, the second preflush is any one of normal saline, sterile normal saline or dialysate;

Further, the construction methods of the first pre-flushing passage and the second pre-flushing passage are as follows:

Connect the venous pot in series to the venous line and connect one end of the venous line to the lower end port of the blood chamber, connect the venous pot in series to the arterial line and connect one end of the arterial line To the upper end interface of the blood chamber, at this time, the venous jug, the lower end interface of the blood chamber, the blood chamber, the upper end interface of the blood chamber and the arterial jug form a first pre-flushing path, and the lower end interface of the dialysate, the dialysate chamber and the dialysis solution The liquid upper end interface forms a second pre-flushing passage.

Further, the step S2 is specifically: controlling the blood chamber liquid supply unit to provide a first priming liquid for the first priming passage, and making the first priming liquid enter the first priming liquid at a first flow rate until the first pre-flushing channel is completely filled, and then the first pre-flushing liquid flows in the first pre-flushing channel at a second flow rate, and is finally enriched to the waste liquid recovery unit, wherein the The second flow rate is greater than the first flow rate.

Further, the first flow rate is 80-100ml/min, and the second flow rate is 200-300ml/min.

Compared with the prior art, the beneficial effects of the present invention are:

The present invention provides an extracorporeal circulation system for blood purification equipment. The extracorporeal circulation system for blood purification equipment includes a dialyzer and an extracorporeal circulation pipeline. The dialyzer is divided into a blood chamber and a dialysate chamber by a semipermeable membrane, and the dialyzer is on the dialyzer. At the same time, it is provided with an upper end interface of the blood chamber and a lower end interface of the blood chamber, and a dialysate upper end interface and a dialysate lower end interface communicated with the dialysate chamber; the extracorporeal circulation pipeline includes a venous pipeline and an arterial pipeline, Wherein, one end of the arterial pipeline is connected to the upper end port of the blood chamber, and one end of the venous pipeline is connected to the lower end port of the blood chamber. At the same time, the present invention also provides an automatic priming method for the extracorporeal circulation system of the blood purification equipment. When the method is used to precharge the extracorporeal circulation system of the blood purification equipment, the preflushing liquid enters the blood of the dialyzer through the venous line. In the chamber, and finally into the arterial pipeline, so as to achieve the purpose of effective and automatic flushing of the extracorporeal circulation system of the blood purification equipment. It can reduce the probability of misoperation, reduce the labor intensity of medical staff, and reduce the manpower demand of the hospital dialysis room.

Description of drawings

1 is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

2 is a schematic diagram of the overall structure of Embodiment 2 and Embodiment 3 of the present invention;

Reference numerals: 10, dialyzer, 11, blood chamber, 11a, upper port of blood chamber, 11b, lower port of blood chamber, 12, dialysate chamber, 12a, upper port of dialysate, 12b, lower port of dialysate, 21 , arterial jug, 21a, first arterial segment, 21b, second arterial segment, 22, venous jug, 22a, first venous segment, 22b, second venous segment, 23, peristaltic pump, 24, air monitor, 31, Pressure monitoring tube, 32, pressure monitor, 33, water blocking membrane, 41, blood chamber liquid supply unit, 42, dialysate liquid supply unit, 51, first waste liquid collector, 52, second waste liquid collector.

Detailed ways

Embodiments of the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. Based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so this The terms describing the orientation or positional relationship in the invention are only used for exemplary illustration, and should not be construed as a limitation on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations with reference to the accompanying drawings.

It should be noted that, in the present invention, the terms "upstream" and "downstream" refer to the direction of fluid flow as a reference, "upstream" refers to the direction from which the fluid flows, and "downstream" refers to the direction from which the fluid flows, Here, "fluid flow direction" refers to the direction of flow from the venous line to the arterial line.

Example 1

Referring to FIG. 1, the following is the first embodiment of the present invention. This embodiment provides an extracorporeal circulation system for blood purification equipment, which can be used for hemodialysis treatment, specifically:

An extracorporeal circulation system for blood purification equipment provided in this embodiment includes a dialyzer 10 and an extracorporeal circulation pipeline, wherein the dialyzer 10 is divided into a blood chamber 11 and a dialysate chamber 12 by a semipermeable membrane. The dialyzer 10 There is also a blood chamber upper port 11a and a blood chamber lower port 11b communicating with the blood chamber 11, a dialysate upper port 12a and a dialysate lower port 12b communicating with the dialysate chamber 12, and the blood chamber The upper port 11a is higher than the lower port 11b of the blood chamber, and the dialysate upper port 12a is higher than the dialysate lower port 12b. The extracorporeal circulation pipeline includes a venous pipeline and an arterial pipeline, the venous pipeline includes a first venous segment 22a, a venous jug 22 and a second venous segment 22b, and the arterial pipeline consists of a first arterial segment 21a, the arterial pot 21 and the second arterial segment 21b, wherein the first venous segment 22a is located upstream of the second venous segment 22b, the first arterial segment 21a is located upstream of the second arterial segment 21b, and the extracorporeal circulation pipeline The connection to the dialyzer 10 is as follows:

The end of the first venous segment 22a is connected to the bottom end of the venous kettle 22, and the second venous segment 22b is used to communicate the venous kettle 22 and the dialyzer 10. Specifically, the second venous segment 22b The head end of the venous pot 22 penetrates through the venous pot 22 and extends into the venous pot 22, and the height of the head end of the second venous segment 22b is about 2/3 of the height of the venous pot 22, The end of the second vein segment 22b is connected to the lower end port 11b of the blood chamber of the dialyzer 10 . The head end of the first arterial segment 21a is connected to the upper end port 11a of the blood chamber of the dialyzer 10, the end of the first arterial segment 21a is connected to the bottom end of the arterial pot 21, and the second arterial segment 21b is The head end penetrates the venous jug 22 from the top of the venous jug 22 and extends to the inside of the arterial jug 21 and is located at about 2/3 of the height of the arterial jug 21 .

In the treatment mode of the extracorporeal circulation system of the blood purification device provided by this embodiment, the liquid flow in the extracorporeal circulation system of the blood purification device is as follows: by introducing the patient's blood from the end of the second arterial segment 21b into the arterial pipeline and making it It flows through the blood chamber 11 of the dialyzer 10, where material exchange is carried out by diffusion/convection in the dialyzer 10 to remove metabolic wastes and excess water in the patient's blood, and to maintain electrolyte and acid-base balance, so that blood To achieve a purification effect, after the purification is completed, the purified blood is introduced into the venous line through the second venous segment 22b and finally returned to the patient through the first venous segment 22a.

In this embodiment, the arterial pot 21 and the venous pot 22 are further provided with an arterial pressure monitoring component and a venous pressure monitoring component, respectively, and the arterial pressure monitoring component and the venous pressure monitoring component are respectively used for monitoring the arterial pipeline and the venous pressure. Monitoring of the pressure in the circuit for ensuring proper flow of fluid in the extracorporeal circulation system of the blood purification device in therapy mode and priming mode, in particular, the pressure in the arterial and venous circuits For monitoring, the tops of the arterial pot 21 and the venous pot 22 are both provided with openings and the openings are connected with a pressure monitoring tube 31, the end of the pressure monitoring tube 31 is provided with a pressure monitor 32, and the pressure monitor 32 is used to monitor the pressure in the arterial jug 21 or the venous jug 22, and at the same time, the upstream of the pressure monitor 32 is also provided with a water blocking member. Specifically, the water blocking member includes an outer casing and a gas channel formed inside the outer casing, one end of the outer casing can be connected to the arterial pot 21 or the venous pot 22, and the other end of the outer casing can be connected to the arterial pot 21 or the venous pot 22 Connected to the pressure monitoring tube 31, the gas channel is used to communicate the pressure monitoring tube 31 and the venous kettle 21 or the arterial kettle 22, so as to detect the pressure in the venous kettle 21 or the arterial kettle 22, and the water blocking The component is also provided with a water blocking film 33 in the gas channel, and the water blocking film 33 is made of non-hydrophilic material and can allow gas to pass through, so as to prevent the liquid in the arterial pot 21 or the venous pot 22 from passing through the The water blocking membrane 33 further enters the pressure monitoring tube 31 and causes cross infection.

In this embodiment, the arterial pipeline is provided with a peristaltic pump 23. In both the treatment mode and the pre-charge mode, the peristaltic pump 23 is used to push the liquid in the extracorporeal circulation system to flow in the extracorporeal circulation system, At the same time, an air monitor 24 is also provided on the first venous segment 22a of the venous line. In the treatment mode, the setting of the air monitor 24 can ensure that the blood returned to the patient through the first venous segment 22a will not be contained in the blood. Contains air.

In this embodiment, the extracorporeal circulation system of the blood purification apparatus further includes a controller, and the peristaltic pump 23 and the air monitor 24 are both electrically connected or signally connected to the controller, so as to facilitate the treatment mode or the pre-charge mode. The liquid flow rate in the extracorporeal circulation system of the blood purification equipment is controlled under the following conditions, and at the same time, the air monitor 24 monitors whether the first venous segment 22a contains air in real time, and feeds back the monitoring results to the controller in real time. , so that the operator can adjust the working state of the extracorporeal circulation system of the blood purification equipment in a timely manner during the treatment process or the pre-flushing process.

Example 2

Referring to FIG. 2 , the following is the second embodiment of the present invention. This embodiment provides an extracorporeal circulation system for blood purification equipment that can perform automatic preflushing. Specifically, the extracorporeal circulation system for blood purification equipment that can perform automatic priming is provided. On the basis of the extracorporeal circulation system of the blood purification equipment provided in the embodiment, it further includes: a liquid supply unit of the blood chamber 11 , a dialysate liquid supply unit 42 and a waste liquid recovery unit.

In this embodiment, the blood chamber 11 liquid supply unit is connected to the upstream of the first venous segment 22a and provides the first priming fluid for the extracorporeal circulation system, and the dialysate liquid supply unit 42 is provided in the The dialysate lower end port 12b is upstream and provides the second priming fluid for the extracorporeal circulation system. The waste liquid recovery unit includes a first waste liquid collector 51 and a second waste liquid collector 52, wherein the first waste liquid collector 51 is provided at the end of the second arterial pipeline and is connected with the arterial The pipeline is connected, and the second waste liquid collector 52 is arranged downstream of the upper end port 12a of the dialysate and communicated with the upper port 12a of the dialysate. At this time, the extracorporeal circulation system of the blood purification device capable of automatic priming is formed with a first priming passage and a second priming passage, and the first priming passage passes through the first venous segment 22a, the venous pot which are connected to each other in turn. 22. The second venous segment 22b, the lower end port 11b of the blood chamber, the blood chamber 11, the upper end port 11a of the blood chamber, the first arterial segment 21a, the arterial pot 21 and the second arterial segment 21b, and the head end of the first pre-flushing passage The blood chamber 11 liquid supply unit is also connected, and the first waste liquid collector 51 is connected at the end; and the second pre-flushing passage passes through the dialysate lower end interface 12b, the dialysate chamber 12 and the dialysate upper end interface 12a which are communicated with each other in turn, In addition, the first end of the second pre-flushing channel is also connected with the dialysate liquid supply unit 42, and the end is connected with the second waste liquid collector 52.

In the priming mode, the first priming liquid is fed into the first priming passage by the liquid supply unit of the blood chamber 11, and the first priming liquid flows along the first priming passage to achieve the first priming liquid. A pre-flushing channel is used for the purpose of pre-flushing, and the pre-flushing of the second pre-flushing channel is to input the second pre-flushing liquid into the second pre-flushing channel through the dialysate liquid supply unit 42 and make the second pre-flushing channel. The flushing liquid flows along the second pre-flushing passage, and finally, the first pre-flushing liquid flowing through the first pre-flushing passage is collected by the first waste liquid collector 51, while the second pre-flushing liquid flowing through the second pre-flushing passage is collected by the first waste liquid collector 51 The priming liquid is collected by the second waste liquid collector 52 . Optionally, the second waste liquid collector 52 and the first waste liquid collector 51 can also be communicated through a waste liquid conveying pipeline, so that all the waste liquid generated by the extracorporeal circulation system of the blood purification equipment in the pre-flushing mode can be connected. liquid for enrichment.

Example 3

Please refer to FIG. 2 , the following is the third embodiment of the present invention. The present embodiment provides an extracorporeal circulation system for blood purification equipment and an automatic priming method thereof. The method specifically includes the following steps:

In this embodiment, the output end of the controller of the extracorporeal circulation system of the blood purification device is further connected with a first prompter and a second prompter, and the first prompter and the second prompter respectively correspond to the first abnormal state and the second abnormal state.

In this embodiment, the automatic priming method of the extracorporeal circulation system of the blood purification equipment specifically includes the following steps:

S1: Based on the extracorporeal circulation system of the blood purification equipment that can be automatically pre-filled provided in Example 2, the first venous segment 22a, the venous pot 22, the second venous segment 22b, the lower end interface 11b of the blood chamber, the blood chamber 11, The upper port 11a of the blood chamber, the first arterial segment 21a, the arterial pot 21 and the second arterial segment 21b are connected in sequence to form a first pre-flushing passage, and the blood chamber 11 liquid supply unit and the first waste liquid collector 51 are respectively connected. Connected to the first end and the end of the first priming passage. Based on the extracorporeal circulation system of the blood purification equipment that can perform automatic priming provided in Example 2, the dialysate liquid supply unit 42 and the second waste liquid collector 52 are respectively connected to the head end and the first end of the second priming passage. end.

S2: Pre-flushing the first pre-flushing channel, specifically: in the first pre-flushing stage, the controller controls the peristaltic pump 23 to work so that the liquid supply unit of the blood chamber 11 provides the first pre-flushing channel for the first pre-flushing channel. and make the first pre-flushing liquid enter the first pre-flushing passage at a flow rate of 80-100 ml/min until the first pre-flushing passage is completely filled. In the flushing stage, at this time, the flow rate of the first priming liquid is changed to flow in the first priming passage at a flow rate of 200-300 ml/min. In the second priming stage, by increasing the delivery speed of the peristaltic pump 23 , which can effectively improve the flushing effect of the first pre-flushing passage, which is beneficial to flush away the tiny air bubbles attached to the first pre-flushing passage.

In the first priming stage and the second priming stage, the first priming liquid flowing through the first priming passage is finally collected by the first waste liquid collector 51 .

In the first and second priming stages, the air monitor 24 and the pressure monitor 32 provided on the arterial pot 21 and the venous pot 22 can simultaneously monitor the working state of the extracorporeal circulation system of the blood purification apparatus. Monitoring and feedback to the controller to ensure that the first priming passage is in normal working condition during the first priming stage and the second priming stage. Specifically, in the first priming stage and the second priming stage, whether there is air in the first priming passage is monitored in real time by the air monitor 24 and fed back to the controller. When the detection result of the air monitor 24 is abnormal, the controller controls the first prompter to issue a prompt signal to prompt the operator to confirm and adjust the liquid supply state of the liquid supply unit of the blood chamber 11 . In the first priming stage and the second priming stage, the pressures of the arterial pipeline and the venous pipeline are monitored and fed back to In the controller, when the monitoring result of the pressure monitor 32 is abnormal, the controller controls the second prompter to issue a prompt signal to prompt the operator to confirm and adjust the connection state of the first pre-flushing passage.

S3: Pre-flushing the second pre-flushing passage:

The dialysate supply unit 42 is controlled by the controller to provide a second preflush for the second preflush passage. The second preflush enters the dialysate chamber 12 through the dialysate lower port 12b, and then passes through The dialysate upper port 12a flows out and is finally collected by the second waste liquid collector 52 .

Meanwhile, it should be noted that the order of the above steps S2 and S3 can be interchanged or performed simultaneously.

In addition, in this embodiment, since the pre-flushing mode is implemented before the treatment mode, the first pre-flushing solution is any one of sterile physiological saline or dialysate, and the dialysate is processed 1-2 times Sterile filtered dialysate, and due to the setting of the semi-permeable membrane, the second preflush can be selected from any one of physiological saline, sterile physiological saline, dialysate or dialysate that has been sterile filtered 1-2 times , and the first pre-flushing solution and the second pre-flushing solution can be pre-prepared as finished products or obtained through online preparation, and the dialysate liquid supply unit includes at least one pump for delivering fluid.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solutions of the present invention, all of them should be included in the scope of the claims of the present invention. The technology, shape, and structural part that are not described in detail in the present invention are all well-known technologies.

Claims (10)

1. a blood purification equipment extracorporeal circulation system is characterized in that: A dialyzer (10), the dialyzer (10) is divided into a blood chamber (11) and a dialysate chamber (12) by a semi-permeable membrane, and is provided with a blood chamber upper end interface communicating with the blood chamber (11) at the same time (11a) and the lower port of the blood chamber (11b), the upper port of the dialysate (12a) and the lower port of the dialysate (12b) communicated with the dialysate chamber (12), wherein the upper port of the blood chamber (11a) higher than the lower port (11b) of the blood chamber, and the upper port (12a) of the dialysate is higher than the lower port (12b) of the dialysate; and an extracorporeal circulation pipeline, the extracorporeal circulation pipeline includes a venous pipeline and an arterial pipeline, one end of the arterial pipeline is connected to the upper end interface (11a) of the blood chamber, and one end of the venous pipeline is connected to the Describe the lower end port (11b) of the blood chamber. 2. The extracorporeal circulation system for blood purification equipment according to claim 1, wherein a peristaltic pump (23) is provided on the arterial pipeline. 3. The extracorporeal circulation system for blood purification equipment according to claim 1, wherein an air monitor (24) is provided on the venous line. 4. The extracorporeal circulation system of a blood purification device according to claim 1, wherein the arterial jug (21) is connected in series on the arterial pipeline, and the venous jug (22) is connected in series on the venous pipeline, And the arterial pot (21) and the venous pot (22) are respectively provided with an arterial pressure monitoring component and a venous pressure monitoring component. 5. An extracorporeal circulation system for blood purification equipment according to claim 1, characterized in that: further comprising a blood chamber (11) liquid supply unit and a dialysate liquid supply unit (42), wherein the blood chamber (11) supplies A fluid unit is arranged at the end of the venous line and provides the first priming fluid for the extracorporeal circulation system, and the output end of the dialysate fluid supply unit (42) is connected to the dialysate lower end port (12b) and A second priming fluid is provided for the extracorporeal circulation system. 6. a kind of blood purification equipment extracorporeal circulation system as claimed in claim 5 is characterized in that: also comprises waste liquid recovery unit, and described waste liquid recovery unit communicates with described extracorporeal circulation pipeline and dialyzer (10) and uses The first priming fluid and the second priming fluid flowing through the extracorporeal circulation system are collected. 7. The extracorporeal circulation system of a blood purification device according to claim 6, wherein the waste liquid recovery unit comprises a first waste liquid collector (51) and a second waste liquid collector (52), The first waste liquid collector (51) is provided at the end of the arterial pipeline and communicated with the arterial pipeline, and the second waste liquid collector (52) is communicated with the dialysate upper end interface (12a) . 8. the automatic priming method of a kind of blood purification equipment extracorporeal circulation system as described in any one of claim 1-7, is characterized in that, comprises the following steps: S1: Build a first priming channel and a second priming channel, and connect the blood chamber (11) liquid supply unit and the dialysate liquid supply unit (42) to the first and second priming channels, respectively the head end of the flushing passage, connecting the waste liquid recovery unit to the ends of the first pre-flushing passage and the second pre-flushing passage; S2: Pre-flushing the first pre-flushing passage: Controlling the liquid supply unit of the blood chamber (11) to provide the first priming liquid for the first priming passage, and making the first priming liquid flow along the first priming passage and finally enriched to the the waste liquid recovery unit; S3: Pre-flushing the second pre-flushing passage: Controlling the dialysate liquid supply unit (42) to provide a second priming liquid for the second priming passage, and making the second priming liquid flow along the second priming passage and finally enriched to waste fluid recycling unit; Wherein, the sequence of steps S2 and S3 can be exchanged or performed simultaneously. 9. The automatic priming method of the extracorporeal circulation system of a blood purification equipment as claimed in claim 8, wherein the construction method of the first priming passage and the second priming passage is specifically: The venous pot (22) is connected in series into the venous line and one end of the venous line is connected to the lower end port (11b) of the blood chamber, and the venous pot (22) is connected in series into the arterial line and One end of the arterial pipeline is connected to the upper end port of the blood chamber (11a), at this time, the venous pot (22), the lower end port of the blood chamber (11b), the blood chamber (11), the upper end port of the blood chamber ( 11a) and the arterial jug (21) form a first pre-flushing passage, and the dialysate lower port (12b), the dialysate chamber (12) and the dialysate upper port (12a) form a second pre-flushing passage. 10 . The automatic priming method for an extracorporeal circulation system of a blood purification device according to claim 9 , wherein the step S2 is specifically: controlling the blood chamber (11) liquid supply unit to be the first pre-priming method. 11 . The flushing passage provides a first priming liquid, and makes the first priming liquid enter the first priming passage at a first flow rate until the first priming passage is completely filled, and then makes the first priming liquid flow at a second flow rate Flowing in the first pre-flushing passage and finally enriched to the waste liquid recovery unit, the second flow rate is greater than the first flow rate.

Images