CN114129799A

CN114129799A - Blood purification system

Info

Publication number: CN114129799A
Application number: CN202111518546.2A
Authority: CN
Inventors: 董凡; 吴文娟; 刘冠贤
Original assignee: Jafron Biomedical Co Ltd
Current assignee: Jafron Biomedical Co Ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-03-04
Anticipated expiration: 2041-12-13
Also published as: CN114129799B

Abstract

The application discloses blood purification system, blood purification system includes: the liquid level detector is arranged on the venous pot and sends a liquid level prompt signal when detecting that the liquid level of the venous pot reaches the first preset liquid level; the liquid level up-regulating module is used for regulating the liquid level of the intravenous pot to be high according to the detected first trigger operation of the user; the starting module is used for controlling the blood purifier to purify blood according to a blood treatment mode; the first fault detection module is used for recording a first time length of the liquid level up-regulation module which is continuously triggered when the liquid level detector sends the liquid level prompt signal, and sending a liquid level fault signal when the first time length is greater than or equal to a first preset time length. Through this kind of mode, can be under the condition that sets up a liquid level detector, the liquid level of nimble control vein kettle and guarantee liquid level security.

Description

Blood purification system

Technical Field

The application relates to the technical field of blood purification, in particular to a blood purification system.

Background

In the blood purification process, the venous pot plays an extremely important role in the blood purification system. The conventional technology generally adopts two liquid level detectors to respectively detect whether the liquid level of the liquid in the intravenous pot reaches a liquid level maximum alarm value and a liquid level minimum alarm value so as to monitor whether the liquid level of the liquid in the intravenous pot is in a normal range.

However, the liquid level monitoring method in the conventional technology has the following two obvious defects:

the first step is that two liquid level detectors are arranged, so that the overall manufacturing cost and the overall operation cost are increased, and the overall structure and layout difficulty are increased; the second, set up the highest warning value of fixed liquid level, reduce the liquid level control flexibility, bring very big inconvenience for the control process of blood purification, can endanger the security of blood purification process even.

Disclosure of Invention

Based on this, the application provides a blood purification system, can be under the condition that sets up a liquid level detector, the liquid level of nimble control venous kettle and guarantee liquid level security.

In a first aspect, the present application provides a blood purification system comprising a blood circuit, a blood purifier, a venous pot, the blood purification system further comprising:

the liquid level detector is arranged on the venous pot and sends a liquid level prompt signal when detecting that the liquid level of the venous pot reaches the first preset liquid level;

the liquid level up-regulating module is used for regulating the liquid level of the intravenous pot to be high according to the detected first trigger operation of the user;

the starting module is used for controlling the blood purifier to purify blood according to a blood treatment mode;

the first fault detection module is used for recording a first time length of the liquid level up-regulation module which is continuously triggered when the liquid level detector sends the liquid level prompt signal, and sending a liquid level fault signal when the first time length is greater than or equal to a first preset time length.

The blood purification system of this application embodiment only sets up a liquid level detector who corresponds first preset liquid level, and first preset liquid level can be equivalent to a liquid level warning value, so can greatly simplify the liquid level detection of vein kettle, control process, is favorable to reducing blood purification equipment's spatial structure volume. On this basis can be according to the first trigger operation height-regulating liquid level of user's liquid level rising, when the liquid level is increaseed in blood purification process, for liquid level security, need receive control more than the first predetermined liquid level, continuous adjustment time when control is through height-regulating liquid level comes the control, consequently when liquid level detector detects first predetermined liquid level, when sending liquid level cue signal, the first time length that the module was triggered in succession begins to take notes the liquid level, first time length can be equivalent to continuous adjustment time, when first time length is greater than or equal to first predetermined time length, send liquid level fault signal. By limiting the continuous liquid level increasing time, the problem that the liquid in the intravenous pot is filled due to false triggering of a user or error of equipment can be prevented, so that the safety of the liquid level in the intravenous pot is guaranteed; more importantly, this kind of mode brings bigger operating flexibility for medical personnel, and medical personnel can transfer the liquid level in the vein kettle to a certain safe liquid level according to clinical treatment demand, can improve patient's blood purification treatment effect and blood purification treatment efficiency, on the basis of the liquid level security that satisfies the vein kettle, gives medical personnel bigger liquid level free control claim.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

FIG. 1 is a schematic diagram of the basic principles of hemodialysis in a blood purification system of the present application;

FIG. 2 is a schematic diagram of an external structure of a blood purification apparatus in the blood purification system of the present application;

FIG. 3 is a schematic diagram of the basic principle of the blood purification system of the present application;

FIG. 4 is a basic schematic diagram of a venous pot in the blood purification system of the present application;

fig. 5 is a schematic structural diagram of an embodiment of the blood purification system of the present application.

Description of the main elements and symbols:

1. an arterial line; 2. a venous line; 3. an arterial clamp; 4. a venous clamp; 5. a peristaltic pump; 6. a heparin pump; 7. a liquid level detector; 8. a venous pot; 81. a kettle body; 82. an inlet end; 83. a liquid supplementing end; 84. adjusting the gas end; 85. an outlet end; 9. a heater; 10. a bubble detector; 11. a blood detector; 12. a filter; 13. a blood leakage detector; 14. a filtration pump; 15. a dialysate pump; 16. a balance; 17. a blood purifier; 18. a liquid supplementing pipe; 19. a branch pipe; 20. a filter; 21. a first tee joint; 22. a second tee joint; 23. a pressure sensor; 24. an air tube; 25. an air pump; 26. a liquid inlet pipe; 27. a liquid outlet pipe; 100. a liquid level up-regulation module; 200. a starting module; 300. a first fault detection module.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The flow diagrams depicted in the figures are merely illustrative and do not necessarily include all of the elements and operations/steps, nor do they necessarily have to be performed in the order depicted. For example, some operations/steps may be decomposed, combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.

Before describing the blood purification system of the embodiments of the present application in detail, the related art will be described.

Blood purification refers to the process of taking the blood of a patient out of the body and removing some pathogenic substances through a blood purification device so as to achieve the purposes of purifying the blood and treating diseases. According to the specific working principle of blood purification treatment, the blood treatment mode comprises: a hemodialysis treatment mode, a hemofiltration treatment mode, a hemoperfusion treatment mode, a plasmapheresis treatment mode, an immunoadsorption treatment mode, etc.; wherein different blood treatment modes can be applied to different types of disease treatment, taking hemodialysis as an example, the working principle of hemodialysis is as follows: by using the principle of a semipermeable membrane, the material exchange is carried out through dispersion, ultrafiltration, adsorption and convection so as to remove various harmful and redundant metabolic wastes and excessive electrolytes in vivo from the body, achieve the aim of purifying blood and achieve the aim of correcting water electrolytes and acid-base balance. Among them, hemodialysis is widely used in clinical treatment of patients with renal failure and the like.

During clinical treatment, it is necessary to automatically control the blood purification treatment process of a patient through a blood purification apparatus. Taking hemodialysis as an example, fig. 1 shows a basic principle diagram of hemodialysis, the components of which include: the device comprises an arterial pipeline 1, a venous pipeline 2, an arterial clamp 3, a venous clamp 4, a peristaltic pump 5, a heparin pump 6, a liquid level detector 7, a venous pot 8, a heater 9, a bubble detector 10, a blood detector 11, a filter 12, a blood leakage detector 13, a filter pump 14, a dialysate pump 15 and a balance 16. As shown in fig. 1, blood of a human body is drawn out to a filter 12 through an arterial line 1, and a dialysate supply system prepares a qualified dialysate using a concentrate for dialysis and water for dialysis and outputs the dialysate to the filter 12; a semipermeable membrane is arranged in the filter 12, wherein the blood and the dialysate are respectively positioned at two sides of the semipermeable membrane, and the blood and the dialysate are contacted with each other and subjected to material exchange in the filter 12 by virtue of the semipermeable membrane and a concentration gradient so as to realize the blood purification effect; then the vein pipeline 2 outputs the purified blood to the vein pot 8, the vein pot 8 is used for buffering the blood in the pipeline and removing bubbles in the blood in the pipeline; the purified blood is then returned to the body via the venous line 2.

In the blood purification process, the venous pot plays an extremely important role in a blood purification system, and achieves the effects of intercepting residual air in a pipeline and the like by storing a certain volume of blood in the venous pot; the actual blood purification state of the patient can be reflected according to the liquid level in the venous pot; when the blood purification process of a patient is in a normal state, the liquid level in the venous kettle needs to be maintained in a normal state. The liquid level of blood in the venous kettle can be prevented from being in a fault state by detecting and monitoring the liquid level of the venous kettle, and when the liquid level of liquid in the venous kettle is monitored by the traditional technology, two liquid level detectors are usually adopted to respectively detect whether the liquid level of the liquid in the venous kettle reaches a liquid level maximum alarm value and a liquid level minimum alarm value so as to monitor whether the liquid level of the liquid in the venous kettle is in a normal range; for example, when the liquid level in the intravenous pot is detected to reach the highest warning value, the blood purification process of the patient is immediately interrupted.

However, the liquid level monitoring method of the venous kettle in the traditional technology has the following two obvious defects:

1. set up two liquid level detection ware on the vein kettle, increase blood clarification plant's whole manufacturing cost and whole running cost, lead to blood clarification plant's overall structure bigger, be unfavorable for the whole convenience of putting of blood clarification plant upper segment, the overall arrangement degree of difficulty of electronic parts is bigger.

2. Set up two liquid level detectors on the vein kettle, set for the highest warning value of fixed liquid level, the lowest warning value of fixed liquid level, these two all need blood to purify and set for in advance before beginning to can't change, in practical application, however, the liquid level of vein kettle can receive the influence of multiple factor, for example patient's physique, the blood treatment mode of selecting, the velocity of flow of liquid level in the pipeline etc. then medical personnel just need adjust the liquid level of blood in the vein kettle according to actual conditions at any time, hardly find a standard liquid level warning value. Especially for the highest warning value of the liquid level, if the highest warning value of the liquid level is set too high, the blood in the venous pot is easy to overflow, and if the highest warning value of the liquid level is set too low, the liquid level of the blood in the venous pot is easy to reach the highest warning value of the liquid level, so that false alarm is generated, and the blood purification treatment efficiency and the blood purification treatment effect of a patient are influenced. Therefore, the highest warning value of the fixed liquid level is uniformly set, so that the medical staff can be limited to control the liquid level, the flexible control of the medical staff on the liquid level is reduced, great inconvenience is brought to the control process of blood purification, and even the safety of the blood purification process of a patient can be endangered.

The blood purification system in the embodiment of the present application includes a blood purification apparatus, and fig. 2 is a schematic structural diagram illustrating an appearance of an embodiment of the blood purification apparatus, the blood purification apparatus including: the blood purification device comprises a body and a display screen, wherein various components such as a blood circuit, a blood purifier, a venous pot and the like are integrated on the body, and the related information of blood purification can be displayed through the display screen.

To better illustrate the principle of blood purification, fig. 3 shows a basic principle diagram of a blood purification system comprising: the peristaltic pump 5, the blood circuit (arterial line 1 and venous line 2), the blood purifier 17, and the venous pot 8 may further include: an artery clamp 3, a vein clamp 4, a heparin pump 6, a liquid level detector 7, a heater 9, a bubble detector 10 and a blood detector 11; the blood circuit is used for conveying liquid; wherein the blood circuit comprises: the device comprises an arterial pipeline 1 and a venous pipeline 2, wherein the middle part of the arterial pipeline 1 passes through a peristaltic pump 5, one end of the arterial pipeline 1 is connected with a blood inlet end of a blood purifier 17, one end of the venous pipeline 2 is connected with a blood outlet end of the blood purifier 17, and a venous pot 8 is arranged in the venous pipeline 2; wherein the peristaltic pump 5 is used for providing a driving force for the arterial line 1, so that the arterial line 1 transmits the liquid into the blood purifier 17, and the liquid in the blood purifier 17 is led out through the venous line 2; for example, in a specific blood purification treatment process, blood in a patient is led out through the arterial line 1 and output to the blood purifier 17, and after the blood purifier 17 is purified, the purified blood is led back to the patient through the venous line 2 again, so that the blood purification function of the patient is realized.

It should be noted that the blood purification system can be applied to various blood treatment modes of a patient, such as a hemoperfusion treatment mode, a hemodialysis treatment mode, a plasmapheresis treatment mode, a hemofiltration treatment mode, etc., and although different blood purification treatment modes have different pipeline schematic diagrams, the pipeline schematic diagrams of the various blood purification treatment modes are expanded on the basis of fig. 3, so the detailed discussion is mainly carried out on the basis of fig. 3, and the blood purification principle content of the blood purification system can be commonly used in the various blood purification treatment modes.

As shown in fig. 3, the venous pot 8 belongs to an electronic component necessary in a basic schematic diagram of a blood purification system, and in the blood purification treatment process, the venous pot 8 is used for collecting blood, and medical staff can conveniently perform operations such as blood observation, detection, medicine adding and the like on the venous pot 8. Specifically, referring to fig. 4, the venous pot 8 includes: a kettle body 81; above the kettle body 81 are provided: an inlet end 82 and an air-adjusting end 84, provided below the boiler body 81: an outlet end 85, wherein the venous line 2 comprises: the liquid inlet pipe 26, the branch pipe 19 and the liquid outlet pipe 27, wherein one end of the liquid inlet pipe 26 is connected with a blood outlet end of the blood purifier 17, the other end of the liquid inlet pipe 26 is connected with an inlet end 82 of the venous pot 8, after the blood purifier 17 purifies the blood of the human body, the liquid inlet pipe 26 outputs the purified blood to the pot body 81, one end of the liquid outlet pipe 27 is connected with an outlet end 85 of the venous pot 8, the other end of the liquid outlet pipe 27 is connected with the vein of the human body through a vein puncture needle, and the liquid outlet pipe 27 feeds the blood in the pot body 81 back to the vein of the human body; the air regulating end 84 of the intravenous bottle 8 is connected with the branch pipe 19, and the atmospheric pressure in the bottle body 81 can be regulated through the branch pipe 19, so that the liquid in the bottle body 81 is kept at a certain liquid level. Specifically, the branch pipe 19 is provided with: the filter 20, the first tee joint 21, the second tee joint 22, the pressure detection module 23, the air pipe 24, the air pump 25 and the like; the filter 20 is used to remove liquid from the atmosphere so that the effect of "venting only gas and not liquid" is achieved in the branch 19.

Specifically, if the liquid level in the venous pot 8 needs to be raised, the first tee joint 21 and the second tee joint 22 are controlled to sequentially communicate the air pipe 24 and the branch pipe 19, wherein one end of the branch pipe 19 is directly communicated with the external atmosphere, and the air pump 25 is closed. And the venous clamp 4 is closed and the outlet conduit 27 is switched off. The liquid in the kettle body 81 enters along with the liquid in the liquid inlet pipe 26 to enable the liquid level to rise, redundant gas in the kettle body 81 is discharged to the outside atmosphere through the branch pipe 19 and the air pipe 24, when the liquid level in the kettle body 81 rises to the height expected by a user, the venous clamp 4 is opened, the first tee joint 21 is closed off a gas transmission channel, and the pressure detection module 23 is used for detecting the atmospheric pressure in the kettle body 81 to guarantee the safety of blood transmission in the venous pipeline 1.

If the liquid level in the vein pot 8 needs to be lowered, the air pump 25 is controlled to be communicated with the branch pipe 19, the air pump 25 is started, the vein clamp 4 is kept in an open state, the air pump 25 injects atmosphere into the pot body 81 through the branch pipe 19, so that the atmospheric pressure in the pot body 81 is increased, the liquid level in the pot body 81 is lowered, when the liquid level in the pot body 81 is lowered to the height expected by a user, the first tee joint 21 is cut off from the gas transmission channel, and the atmospheric pressure in the pot body 81 is detected through the pressure detection module 23, so that the liquid level of the vein pot 8 is kept in a stable state.

Thus, according to the above-mentioned figure 4, the regulation of the liquid level in the venous pot 8 is mainly achieved by varying the atmospheric pressure in the pot body 81 through the branch 19.

Therefore, the liquid level of the venous kettle is an important parameter in the blood purification treatment process, and the liquid level of the venous kettle cannot be too high or too low. For example, when the liquid level in the venous kettle is too low, the liquid in the liquid outlet pipe is easy to mix into bubbles; if the air bubbles mixed in the liquid outlet pipe are back-transfused into the human body, the patient may have dyspnea, chest pain, cough, blood pressure reduction and asthma, and the serious patient can cause coma and death; on the contrary, if the liquid level of the venous kettle is too high, the blood in the kettle body can be easily poured into the branch pipe, so that the cross infection of the blood in the branch pipe can be caused, and the coagulation failure of the blood in the venous kettle can be easily caused. Therefore, the liquid level of the venous kettle needs to be maintained at a reasonable level, the liquid level of the venous kettle can be detected in an ultrasonic mode, an optical mode, a capacitance mode and the like, and the safety of the liquid level in the venous kettle can be monitored in real time through the liquid level detection mode.

It is specifically noted herein that a level detector is a common electronic component that primarily uses ultrasound, optics, capacitance, etc. to detect the level of fluid in an intravenous bottle. No matter which type of liquid level detector is adopted, the liquid level detector can only be fixed at a certain height of the outer side pipe wall of the kettle body of the intravenous kettle, and as shown in figure 4, whether the liquid level in the intravenous kettle reaches the certain height is detected by the liquid level detector 7; the liquid level detector 7 cannot detect a continuous variation in the liquid level in the intravenous drip over a wide range. For example, if it is desired to detect whether the liquid level in the venous pot reaches 1/3, the liquid level detector 7 is disposed at 1/3 of the outer wall of the body 81 of the venous pot.

Referring to fig. 3, the blood purification system of the present embodiment includes: a blood circuit, a blood purifier 17 and a venous pot 8.

Referring to fig. 5, the blood purification system further comprises: a liquid level detector 7, a liquid level up-regulation module 100, a start-up module 200 and a first fault detection module 300.

And the liquid level detector is arranged on the venous pot and sends a liquid level prompt signal when detecting that the liquid level of the venous pot reaches the first preset liquid level.

Specifically, the liquid level detector is configured to detect whether a liquid level in the venous kettle reaches a first preset liquid level, where the first preset liquid level represents a liquid level alarm value in the venous kettle and may also represent a liquid level minimum alarm value in the venous kettle, for example, a highest liquid level of liquid that can be contained in a kettle body of the venous kettle is taken as a reference, and the first preset liquid level is 1/3 of the kettle body height, where the first preset liquid level is a preset fixed value; when the liquid level detector detects that the liquid level in the intravenous kettle is higher than or equal to a first preset liquid level, a liquid level prompt signal is sent out.

The liquid level up-regulating module is used for regulating the liquid level of the intravenous pot to be high according to the detected first trigger operation of the user.

Optionally, the liquid level up-regulation module may include a physical key or a virtual key on the touch screen, and when the first trigger operation output by the user triggers the physical key or the virtual key on the touch screen, the liquid level in the intravenous pot will rise. Referring to fig. 4, the specific elevation of the liquid level in the venous pot is: when a physical key or a virtual key on a touch screen is triggered by a first trigger operation output by a user, the liquid level up-regulating module controls the first tee joint 21 and the second tee joint 22 to sequentially conduct the air pipe 24 and the branch pipe 19 according to the detected first trigger operation of the user, the air pump 25 is closed, the venous clamp 4 is closed, the liquid outlet pipe 27 is closed, liquid in the kettle body 81 enters along with the liquid in the liquid inlet pipe 26 to enable the liquid level to rise, and redundant gas in the kettle body 81 is discharged to the outside atmosphere through the branch pipe 19 and the air pipe 24.

In this embodiment, the rising time of the liquid level in the intravenous bottle is determined by the triggering time of the liquid level up-regulation module triggered by the first triggering operation, for example, when the liquid level up-regulation module is triggered continuously for 5 seconds by the first triggering operation, the liquid level in the intravenous bottle rises continuously for 5 seconds.

The starting module is used for controlling the blood purifier to purify blood according to the blood treatment mode.

Referring to fig. 3, the user selects a blood purification blood treatment mode according to the clinical symptoms of the patient, and in the selected blood treatment mode, the peristaltic pump 5 is controlled to start operating, and the arterial line 1 transmits the blood to the blood purifier 17 to start the blood purification process of the blood purifier 17.

In this embodiment, when the user continuously performs the first trigger operation on the liquid level upward adjustment module, the liquid level upward adjustment module is continuously triggered, and the liquid level of the venous kettle is continuously increased at this time. The time length of the liquid level up-regulation module which is continuously triggered is also the time length of the liquid level of the venous kettle which is continuously regulated up.

When the liquid level detector sends out a liquid level prompt signal, the liquid level in the intravenous kettle is greater than or equal to a first preset liquid level; and detecting whether the first time length for which the liquid level up-regulation module is continuously triggered reaches a first preset time length or not under the condition that the liquid level in the intravenous kettle is greater than or equal to the first preset liquid level, wherein once the first time length for which the liquid level up-regulation module is continuously triggered is greater than or equal to the first preset time length, the liquid level in the intravenous kettle rises and possibly exceeds a liquid level maximum alarm value, and the liquid in the intravenous kettle flows back to a branch pipe of the intravenous kettle. For example, due to carelessness of a user, unskilled operation of the user, forgetting of the user, or physical failure of the liquid level up-regulation module itself, the liquid level up-regulation module is continuously triggered for 10 seconds (for example, the first preset time period is 5 seconds), the liquid level in the intravenous kettle continuously rises within 10 seconds, and the kettle body is easily filled. In the liquid level of the venous kettle of the embodiment, in the process of increasing the liquid level, the limit value (namely the first preset time length) of the time length for which the liquid level increasing module is continuously triggered is set, so that the situation that the venous kettle is filled with the liquid level of the venous kettle after too long time of liquid level increase and the safety of blood purification treatment of a patient is damaged can be avoided.

Specifically, three situations can be divided:

(1) when the liquid level in the vein kettle is lower than a first preset liquid level, if the liquid level in the vein kettle is increased by the liquid level up-regulating module according to the detected first trigger operation, the liquid level detector does not send a liquid level prompt signal, and the time length of the continuous trigger of the liquid level up-regulating module is not required to be recorded; if the liquid level in the venous kettle is always smaller than the first preset liquid level although the liquid level rises within the time length within which the liquid level up-regulating module is continuously triggered, the first time length is equal to 0, and the first fault detection module cannot send out a liquid level fault signal.

(2) When the liquid level in the vein kettle is lower than a first preset liquid level, if the liquid level in the vein kettle is increased by the liquid level up-regulating module according to the detected first trigger operation, the liquid level detector does not send a liquid level prompt signal, and the time length of the continuous trigger of the liquid level up-regulating module is not required to be recorded; if the liquid level in the intravenous kettle rises to a first preset liquid level within the time length of the continuous triggering of the liquid level up-regulating module, the liquid level detector starts to send a liquid level prompt signal, the first fault detection module starts to record the first time length of the continuous triggering of the liquid level up-regulating module, and judges whether the recorded first time length of the continuous triggering of the liquid level up-regulating module is greater than or equal to the first preset time length (please note that the recorded first time length of the continuous triggering of the liquid level up-regulating module is taken as a starting point when the liquid level detector starts to send the liquid level prompt signal, but not is calculated when the liquid level up-regulating module starts to raise the liquid level in the intravenous kettle).

(3) The liquid level in the current vein kettle is larger than or equal to a first preset liquid level, if the liquid level in the vein kettle is increased by the liquid level increasing module according to the detected first trigger operation, the liquid level detector sends a liquid level prompt signal, the first time length of the liquid level increasing module triggered continuously is recorded, and whether the first time length of the liquid level increasing module triggered continuously is larger than or equal to the first preset time length is judged.

Therefore, the embodiment can record the first time length of the continuous triggering of the liquid level up-regulating module only when the liquid level in the vein kettle reaches the first preset liquid level, and can accurately judge whether the vein kettle is filled with liquid in the process of increasing the liquid level of the vein kettle.

In one embodiment, the blood purification system further comprises: and a time setting module.

The time setting module is used for detecting the capacity of the venous pot and setting the first preset time length according to the capacity of the venous pot.

Specifically, the volume of the venous pot may be: the maximum volume of liquid that the intravenous pot can hold; for example, the intravenous drip may have a capacity of 200 ml. The time that the intravenous pot is filled with the liquid can be calculated according to the capacity of the intravenous pot, so that the first preset time length can be scientifically and reasonably set. For example, the first preset liquid level is 1/3 of the venous kettle, if the liquid level in the venous kettle reaches 1/3 of the venous kettle, the volume of the liquid in the venous kettle accounts for 1/3 of the volume of the venous kettle, and if the time for filling the residual 2/3 volume of the venous kettle with the liquid is 20 seconds, the first preset time length is certainly less than 20 seconds, for example, the first preset time length is 18 seconds (the specific value can be set according to clinical experience). Therefore this embodiment sets for first preset time length according to the capacity of vein kettle, sets for the first preset time length that obtains then and can not too long also can not be too short, when the liquid level in the vein kettle reaches first preset liquid level, when the first time length that the liquid level module of transferring upward was triggered in succession was in first preset time length, can guarantee that the vein kettle can not be filled up by liquid, so can ensure the interior liquid level regulation security of vein kettle.

In one embodiment, the blood purification system may further include: the liquid level down-regulation module, the second fault detection module and the third fault detection module.

The liquid level down-regulation module is used for regulating the liquid level of the venous pot down according to the detected second trigger operation of the user.

Optionally, the liquid level down-regulation module includes a physical key or a virtual key on a touch screen, wherein reference may be made to the above specific implementation of the liquid level up-regulation module with respect to the specific implementation of the liquid level down-regulation module.

And the second fault detection module is used for recording a second time length of the continuous triggering of the liquid level up-regulation module or the liquid level down-regulation module, and when the second time length is equal to a second preset time length, if the liquid level increase of the venous kettle is detected to be smaller than or equal to a first preset increment or the liquid level decrease of the venous kettle is detected to be smaller than or equal to a first preset decrement, a fault signal of the liquid level up-regulation module or a fault signal of the liquid level down-regulation module is sent.

When the first trigger operation output by the user continuously triggers the liquid level up-regulating module, the user needs to regulate the liquid level in the intravenous kettle to be high; or when the second trigger operation output by the user continuously triggers the liquid level down-regulation module, the situation that the user needs to regulate the liquid level in the intravenous kettle down is shown.

The second fault detection module is used for detecting whether the liquid level up-regulation module or the liquid level down-regulation module is in a fault state; for example, the second preset time duration is 5 seconds, and the first preset increment is: 0.5cm, when second fault detection module detected that second time length equals 5 seconds, the liquid level increase volume of vein kettle was 0, then explained the liquid level module of transferring upward and has been triggered 5 seconds in succession, and the liquid level of vein kettle does not rise, can judge that the liquid level module of transferring upward is in the fault condition, sends liquid level module of transferring upward fault signal to the suggestion user: the liquid level up-regulation module has failed; or, the second preset time length is 5 seconds, and the first preset decrement is: 0.5cm, when second fault detection module detected that second time length equals 5 seconds, the liquid level decrement of vein kettle was 0, then explained the liquid level down the module and has been triggered 5 seconds continuously, and the liquid level of vein kettle does not descend, can judge that liquid level down the module is in trouble state, sends the liquid level down the module fault signal, with the suggestion user: the liquid level down regulation module has failed. Wherein the increase or decrease of the liquid level of the venous kettle can be obtained by weighing the venous kettle.

Therefore, in the embodiment, whether the liquid level increase amount of the venous kettle reaches a first preset increment or whether the liquid level decrease amount of the venous kettle reaches a first preset decrement is detected by detecting the liquid level increasing module or the liquid level decreasing module within a second time length which is continuously triggered, and if the liquid level increase amount reaches the first preset increment or the liquid level decrease amount reaches the first preset decrement, it indicates that the liquid level increasing module is in a normal state or the liquid level decreasing module is in a normal state, and a user can control the liquid level in the venous kettle to be increased through a first triggering operation or control the liquid level in the venous kettle to be decreased through a second triggering operation; if the liquid level does not reach the first preset increment or the first preset decrement, the liquid level up-regulation module is in a fault state or the liquid level down-regulation module is in a fault state, the liquid level up-regulation module is triggered through the first trigger operation or the liquid level down-regulation module is triggered through the second trigger operation, the invalid operation is required to remind a user: the liquid level up-regulation module or the liquid level down-regulation module is not required to be triggered. Therefore, a user can be timely reminded through the fault signal of the liquid level up-regulating module or the fault signal of the liquid level down-regulating module, the problem that the liquid level of the intravenous kettle cannot be regulated for a long time is avoided, and the control response speed of the liquid level up-regulating module or the liquid level down-regulating module is improved.

Wherein the second preset time length is less than or equal to the first preset time length.

For example, the second preset time period is 3 seconds, and the first preset time period is 5 seconds. Set up the relative size between second preset time length and the first preset time length, can more scientific, evaluate liquid level module or liquid level down adjust the module whether be in the fault condition rapidly to in first preset time length, the user can select the time of adjusting the interior liquid level of vein kettle more in a flexible way, brings bigger operational flexibility for the user.

It should be noted that, the above-mentioned "the liquid level adjustment module (the liquid level up-adjustment module or the liquid level down-adjustment module) is continuously triggered" may refer to: the liquid level regulating module is triggered continuously and uninterruptedly. For example, the liquid level up-regulation module is continuously triggered through a first triggering operation, wherein the time length of the continuous triggering is 10 seconds; for another example, after the liquid level up-regulation module is continuously triggered for 5 seconds through the first triggering operation, the interruption is performed for 1 second, and then the liquid level up-regulation module is continuously triggered for 5 seconds through the first triggering operation, so that the time length of the continuous triggering of the liquid level up-regulation module is 5 seconds; that is, the "length of time to be triggered continuously" does not allow cumulative calculation of the trigger time after interruption.

The third fault detection module is used for sending a first alarm signal when the liquid level detector does not send the liquid level prompt signal.

Specifically, the liquid level detector does not send a liquid level prompt signal, which may indicate that the liquid level in the venous kettle is lower than a first preset liquid level, which is equivalent to that the liquid level in the venous kettle may be lower than a lowest warning value of the liquid level, and the third fault detection module sends a first alarm signal to prompt a user: too low a level of liquid in the intravenous drip chamber may occur. The first alarm signal may be a first audible and visual alarm signal.

In one embodiment, the blood purification system further comprises: a vein clip is provided.

The venous clamp is arranged on the blood circuit and used for cutting off the blood circuit according to the first alarm signal so as to interrupt the blood purification process, and conducting the blood circuit according to the liquid level prompt signal so as to restart the blood purification process.

When the liquid level in the venous pot is too low, the venous clamp turns off the liquid outlet pipe of the venous pipeline according to the first alarm signal so as to interrupt the flow of liquid in the liquid outlet pipe, and the problem that the liquid level is too low, so that bubbles are mixed into the liquid outlet pipe and the safety of blood purification treatment of a patient is damaged is avoided. When the liquid level detector outputs the liquid level prompt signal again, the liquid level of the venous pot returns to the normal level, the liquid outlet pipe is conducted again, and the blood purification process of the blood purifier is restarted.

In one embodiment, the blood purification system further comprises: a pressure detection module and a pressure failure module.

The pressure detection module is used for detecting the atmospheric pressure in the venous pot; the pressure failure module is used for sending a second alarm signal when the pressure in the venous pot is greater than the preset pressure. Wherein the second alarm signal may be a second audible alarm signal.

As shown in fig. 4, the atmospheric pressure in the venous pot is detected by the pressure detection module 23; illustratively, the preset atmospheric pressure is 100mmHg, the pressure detection module 23 detects that the atmospheric pressure in the venous kettle is 110mmHg, and when the atmospheric pressure in the venous kettle is detected to be greater than the preset atmospheric pressure, it indicates that the pressure in the venous kettle is abnormal; such as a pinched or kinked venous line, which may cause the atmospheric pressure within the venous kettle to be greater than the preset atmospheric pressure, the healthcare worker is prompted by a second audible and visual alarm signal to: the atmospheric pressure in the venous pot is abnormal, and a user needs to timely treat the abnormal pressure phenomenon in the venous pot. The safety of the patient in the blood purification process can be timely eliminated.

The pressure detection module is used for detecting the pressure in the venous kettle when the liquid level up-regulation module is not triggered by the first trigger operation; therefore, when the liquid level of the venous kettle is not in the heightening stage, the pressure detection module can detect the pressure in the venous kettle, and the pressure in the venous kettle detected by the pressure detection module has higher accuracy.

In one embodiment, the blood purification system further comprises: the weighing system comprises a weighing module and a first weight detection module.

The weighing module is used for weighing the weight of the venous pot to obtain a weight detection amount; after the weight of the intravenous pot is weighed, whether the liquid in the intravenous pot is filled or not can be indirectly deduced according to the weight detection value.

The first weight detection module is used for controlling the venous clamp to be switched off when detecting that the weight detection amount is larger than a weight warning value. The first weight detection module judges whether the weight detection amount is greater than a weight warning value or not, and controls the venous clamp to be switched off if the weight detection amount is greater than the weight warning value.

Wherein the weight warning value can be: the liquid level of the venous pot is the weight of the venous pot when the liquid level is at the highest warning value. When the weight detection amount is judged to be larger than the weight warning value, the liquid level in the venous pot is over high, and the risk that the venous pot is filled fully exists; the venous clamp is turned off, the liquid outlet pipe is turned off, and the peristaltic pump is controlled to stop so as to stop the blood purification treatment process, so that a user can conveniently and timely handle the abnormal liquid level fault of the venous pot. Therefore, the embodiment judges whether the liquid level contained in the intravenous pot exceeds the normal value according to the weight of the intravenous pot, and can accurately monitor whether the liquid in the intravenous pot is full or not.

Optionally, the weighing module is further configured to calculate a weight variation according to the weight detection value; for example, the weighing module calculates the weight increase rate (i.e. the weight change) of the venous pot as: 10 g/min; furthermore, the volume change of the liquid in the intravenous pot can be obtained according to the weight change.

The blood purification system further comprises: the weight detection device comprises a second weight detection module, a third weight detection module and a fourth weight detection module.

The second weight detection module is used for detecting whether the weight variation is within a preset error range when the liquid level up-regulation module does not detect the first trigger operation and the liquid level down-regulation module does not detect the second trigger operation, and determining that the venous kettle has a leakage fault or the venous kettle has a blockage fault if the weight variation is not within the preset error range.

Referring to fig. 4, when the liquid level up-regulation module and the liquid level down-regulation module are not triggered, the liquid inlet pipe 26 of the venous pipeline conveys blood to the kettle body 81 of the venous kettle, and the liquid outlet pipe 27 of the venous pipeline conveys blood to veins of a human body, because the blood purification efficiency of the blood purifier is usually kept in a steady state, the inflow and outflow of blood in the venous kettle are kept in a balanced state, and the weight variation of the venous kettle is also within a preset error range, such as the preset error range is: -10g/min to 10 g/min; when the weight variation of the venous pot is not within the preset error range, indicating that the venous pot has weight abnormal fault; for example, when the weight increase rate of the venous kettle is detected to be 12g/min and more than 10g/min, the weight increase of the venous kettle is over fast, and the venous kettle has a blockage fault (namely blood clots occur due to the coagulation of blood in the venous kettle, and the output rate of the blood in the venous kettle is delayed or blocked); when the weight reduction rate of the venous kettle is detected to be 12g/min and is more than 10g/min, the weight reduction of the venous kettle is over fast, and the venous kettle has a leakage fault (namely, a gap is formed on the tube wall or the joint of the venous kettle, so that blood in the venous kettle is leaked to the outside).

And the third weight detection module is used for detecting whether the weight variation (the weight variation is a weight increase value at the moment) is greater than the preset safety increase value or not when the liquid level up-regulation module detects the first trigger operation, and if the weight variation is greater than the preset safety increase value, determining that the venous kettle has a fault of excessively fast liquid level up-regulation.

Specifically, when the liquid level up-regulating module is triggered through a first trigger operation, the liquid level in the venous kettle gradually rises at the moment, and whether the liquid level in the venous kettle is up-regulated too fast is judged by detecting the weight increase value of the venous kettle; when the weight increase value of the venous pot is detected to be larger than the preset safety increase value, judging that: the liquid level in the venous kettle is adjusted too fast due to the too fast blood flow speed in the blood loop; when the flow rate of blood in the blood circuit is too fast, the blood purification efficiency of the blood purifier may be reduced, and discomfort may be caused to a patient during the blood purification treatment.

And the fourth weight detection module is used for detecting whether the weight variation (the weight variation is a weight reduction value) is greater than a preset safety reduction value or not when the liquid level down-regulation module detects the second trigger operation, and determining that the venous kettle has a fault of too fast down-regulation of the liquid level if the weight variation is greater than the preset safety reduction value.

Specifically, when the liquid level down-regulation module is triggered through the second trigger operation, the liquid level in the venous kettle can be reduced, and the weight of the venous kettle can be reduced. When the weight reduction value of the venous pot is larger than the preset safe reduction value, the liquid level in the venous pot is reduced too fast; accordingly, the rate of injecting the atmosphere into the kettle body through the air pump is too fast, which can cause the liquid in the liquid outlet pipe of the venous line to easily introduce air bubbles, and further cause the blood to easily generate air bubble faults in the transmission process of the blood circuit. For example, the preset safety reduction value is 10g/min, and when the weight reduction value of the venous kettle is detected to be 12g/min, the weight of the venous kettle is indicated to be reduced too fast, and the situation that the liquid level of the venous kettle is reduced too fast is directly obtained. Therefore, whether the liquid level down regulation in the venous kettle is in a fault state can be accurately judged by monitoring the weight reduction value of the venous kettle.

In one embodiment, the blood purification system further comprises: and a liquid supplementing module.

The fluid infusion module is used for infusing the supplementary fluid into the intravenous pot according to the detected fluid infusion operation of the user.

During the blood purification treatment process, the user also needs to output the supplementary liquid into the venous pot, so that the purified blood and the supplementary liquid are mixed in the venous pot and then are infused back to the veins of the human body through the liquid outlet pipe. The supplementary liquid can be fresh blood plasma, a solution containing elements required by a human body, or a disease treatment solution and the like; the specific composition of the supplemental fluid may be determined according to the clinical needs of the patient and the selected blood treatment modality. Referring to fig. 4, the venous pot further includes a fluid infusion end 83 disposed above the pot body 81, and the venous line further includes a fluid infusion tube 18; fluid infusion end 83 connects the one end of fluid infusion pipe 18, when detecting user's fluid infusion operation, then export the supplementary liquid to the vein kettle in through fluid infusion pipe 18 to carry out the fluid infusion to the vein kettle according to patient's clinical treatment demand, can improve patient's blood purification treatment.

In one embodiment, the blood purification system further comprises: and a timing module.

The timing module is used for recording a third time length of continuous access of the supplementing liquid in the venous kettle when the liquid level detector sends the liquid level prompt signal, and sending a supplementing fault signal when the third time length is larger than or equal to a third preset time length.

In order to prevent the problem that the liquid supplementing module causes the venous pot to be filled with liquid when supplementing liquid is delivered into the venous pot; this embodiment is when liquid level detector sends when the liquid level cue signal, through the module record fluid infusion module with make-up fluid defeated to the intravenous kettle in the continuous time (being the intravenous kettle fluid infusion) to when the third time length of continuous access make-up fluid in the intravenous kettle is greater than or equal to the third and presets the time length, then explains the continuous fluid infusion time overlength of intravenous kettle, the liquid level in the intravenous kettle exceedes the biggest safety alert liquid level very easily, sends fluid infusion fault signal through the module of timing, in order to remind the user: the liquid supplementing module can continuously supplement liquid, so that the venous pot is filled with the liquid; for example, the third predetermined time period is 10 minutes, and when the fluid infusion module continues to perform fluid infusion for more than 11 minutes, the venous pot may be filled with the fluid infusion tank.

Specifically, three situations can be divided:

(1) the liquid level in the current venous pot is smaller than a first preset liquid level, if the liquid supplementing module begins to supplement liquid to the venous pot according to the detected liquid supplementing operation, the liquid level detector cannot send a liquid level prompt signal, and the time length of continuous liquid supplementing in the venous pot does not need to be recorded; if the liquid level in the venous kettle is increased but is always smaller than the first preset liquid level within the time span of continuous liquid supplement of the venous kettle, the third time span is equal to 0, and the timing module does not send out a liquid supplement fault signal.

(2) The liquid level in the current venous pot is smaller than a first preset liquid level, if the liquid supplementing module begins to supplement liquid to the venous pot according to the detected liquid supplementing operation, the liquid level detector cannot send a liquid level prompt signal, and the time length of continuous liquid supplementing of the venous pot does not need to be recorded; if the liquid level in the venous pot rises to a first preset liquid level within the time span of continuous liquid supply of the venous pot, the liquid level detector starts to send a liquid level prompt signal, the timing module starts to record a third time span of continuous liquid supply of the venous pot, and judges whether the recorded third time span of continuous liquid supply of the venous pot is greater than or equal to the third preset time span or not (please note that the recorded third time span of continuous liquid supply of the venous pot is taken as a starting point when the liquid level detector starts to send the liquid level prompt signal, but does not start to calculate when liquid supply to the venous pot is started).

(3) The liquid level in the current venous pot is larger than or equal to a first preset liquid level, if the liquid supplementing module starts to supplement liquid to the venous pot according to the detected liquid supplementing operation, the liquid level detector sends a liquid level prompt signal, records a third time length of continuous liquid supplementing of the venous pot, and judges whether the third time length of continuous liquid supplementing of the venous pot is larger than or equal to the third preset time length.

In one embodiment, the blood purification system further comprises: and a color detection module.

The color detection module is used for detecting the color of the liquid in the intravenous pot. In the blood purification treatment process, the venous pot is used for storing the purified blood, and the color of the liquid in the venous pot is red; the color of the liquid in the venous pot is detected to be red through the color detection module, and if the color of the liquid in the venous pot is detected to be not red through the color detection module, the blood purification treatment process of the patient is indicated to be in fault. Furthermore, when the blood purification system conducts blood leading or blood returning, whether the blood purification system successfully leads blood or successfully returns blood can be judged according to the liquid color detected by the color detection module, and safety control on the blood purification treatment process of a patient is facilitated.

In one embodiment, the blood purification system further comprises: a flow rate setting module.

The flow rate setting module is used for setting the flow rate of fluid infusion according to the liquid level in the venous pot; at this time, the fluid infusion module is further configured to deliver the refill fluid into the intravenous drip chamber at the fluid infusion flow rate according to the detected fluid infusion operation of the user.

When the user need be defeated the make-up fluid to the vein kettle in, in order to ensure the liquid level security of vein kettle at the fluid infusion in-process, this embodiment sets up the fluid infusion velocity according to the liquid level in the vein kettle to make the rate that the vein kettle inserts the make-up fluid can not make the liquid level in the vein kettle rise sharply, prevent to insert the make-up fluid and lead to the problem that the vein kettle is filled up. For example, when the liquid level in the venous kettle is 1/3, the infusion flow rate needs to be set as large as possible; for another example, when the liquid level in the venous pot is 2/3, the flow rate of the infusion solution needs to be set as small as possible. Therefore, the fluid infusion flow rate in the embodiment can change according to the change of the liquid level in the venous pot, and the fluid infusion safety of the venous pot is guaranteed.

In one embodiment, the blood purification system further comprises: an ultrasonic detection module.

The ultrasonic detection module is used for carrying out ultrasonic detection on the liquid in the intravenous kettle so as to detect whether solid precipitates are generated in the intravenous kettle or not, and if the solid precipitates are generated, a fourth alarm signal is sent out. The fourth alarm signal may be a fourth acousto-optic alarm signal.

Because the venous pot is used for storing blood, after the venous pot accumulates a certain volume of blood, the flow rate of the blood in the venous pot becomes slow, and particularly under the condition that the liquid level in the venous pot is higher, the blood is easy to coagulate in the venous pot, and then solid precipitates are adhered to the inner wall of the body of the venous pot and the bottom of the body of the venous pot; this clotting phenomenon can cause the outlet end of the venous pot to become blocked, which can lead to blood loss in the patient. Therefore, the present embodiment performs ultrasonic detection on the liquid in the venous kettle, and the specific manner may be: the ultrasonic waves are emitted into the venous pot, if solid precipitates are generated in the venous pot, the ultrasonic waves are reflected, refracted and attenuated through the solid precipitates, and the signal waveform of the received ultrasonic waves is also changed, so that whether the solid precipitates are generated in the venous pot or not can be judged according to the signal waveform of the received ultrasonic waves. When the liquid in the venous pot is subjected to ultrasonic detection, detecting to obtain solid precipitates generated by the venous pot; the kettle body of the venous kettle is proved to have coagulation fault, and then a fourth alarm signal is sent out; when the user sees the fourth warning signal, it is possible to obtain: the venous kettle has coagulation fault to remind the user to go in time to handle coagulation fault, ensure the safety of patient's blood purification.

Optionally, the venous clamp turns off the liquid outlet pipe of the venous line according to the fourth alarm signal to interrupt the blood purification process of the patient; avoid the solid state precipitate in the vein kettle to be carried to the vein of human body, prevent that the solid state precipitate that the internal access blood coagulation of human body produced, and then harm patient's blood purification security.

In one embodiment, the blood circuit includes an arterial line and a venous line, the blood purification system further comprising: and a bubble sensing module.

The bubble sensing module is used for detecting whether bubbles exist in a venous pipeline connected with the outlet end of the venous kettle when the liquid level detector does not send the liquid level prompt signal, and if bubbles exist in the venous pipeline connected with the outlet end of the venous kettle, a third alarm signal is sent. The third alarm signal may be a third audible and visual alarm signal.

Referring to fig. 3 and 4, a bubble sensing module (e.g., the bubble detector 10 in fig. 3) is disposed on the outlet tube 27 of the venous line connected to the outlet end 85 of the venous pot, and the bubble sensing module detects whether bubbles exist in the liquid tube 27, so as to prevent the liquid tube 27 from delivering bubbles to the veins of the human body and endangering the blood purification safety of the patient; if the bubble sensing module detects that bubbles exist in the liquid outlet pipe 27, a fourth alarm signal is sent out to prompt a user to timely deal with the bubble faults of the liquid outlet pipe 27. In addition, in this embodiment, the bubble sensing module will detect whether bubbles exist in the liquid tube 27 only when the liquid level detector 7 does not output a liquid level prompt signal; when the liquid level in the venous pot does not reach the first preset liquid level, the liquid level in the venous pot is lower, and bubbles are easily generated in the liquid outlet pipe 27, so that the bubble detection function can be realized by the bubble sensing module; when the liquid level in the vein kettle reaches the first preset liquid level, the liquid level in the vein kettle is higher, no bubble occurs in the liquid outlet pipe 27, and the bubble sensing module does not need to detect whether bubbles exist in the liquid outlet pipe 27. The bubble sensing module has high bubble detection efficiency.

In one embodiment, the blood circuit includes an arterial line and a venous line, the blood purification system further comprising: the flow rate detection module and the flow rate fault module.

And the flow rate detection module is used for detecting the flow rate of the liquid in the arterial pipeline to obtain a flow rate detection value when the liquid level detector sends the liquid level prompt signal and the liquid level up-regulation module is triggered. When the liquid level in the venous kettle is greater than or equal to a first preset liquid level and the liquid level in the venous kettle is controlled to be increased by the liquid level increasing module according to the detected first trigger operation, the flow rate of the liquid in the arterial pipeline (namely the rate of the venous kettle accessing the liquid) needs to be detected to obtain a flow rate detection value; for example, a flow rate measurement of 5ml/min is detected in the arterial line.

And the flow rate fault module is used for sending a flow rate fault signal when the flow rate detection value is greater than a preset safe flow rate. The preset safe flow rate may be the maximum rate of accessing the liquid, which can be borne by the venous kettle when the liquid level detector sends the liquid level prompt signal and the liquid level up-regulation module is triggered (the preset safe flow rate may be obtained by clinical tests). If the flow rate of the liquid in the arterial pipeline is greater than the preset safe flow rate, the liquid level in the venous kettle rises very fast when a user increases the liquid level in the venous kettle, which is not beneficial to the liquid level adjustment of the venous kettle; for example, when the liquid level up-regulation module is triggered through the first trigger operation, the rising rate of the liquid level in the intravenous kettle is too fast, sufficient reaction time is not provided for a user, and the user is difficult to regulate the liquid level in the intravenous kettle to a desired liquid level, which brings great inconvenience to the operation of the user. Therefore, the operation simplicity of increasing the liquid level in the intravenous bottle is improved by setting the preset safe flow rate; if the flow rate fault module sends a flow rate fault signal, the user takes corresponding measures: for example, the flow rate of the liquid in the arterial line is reduced, so that the liquid level in the venous pot is more conveniently adjusted.

It should be noted that the data referred to in the tables, graphs and formulas in the present specification are only for illustration, and do not mean that the blood purification apparatus is the pressure values in the actual application process.

It is to be understood that the terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

The above description is only for the specific embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A blood purification system comprising a blood circuit, a blood purifier, a venous pot, the blood purification system further comprising:

2. The blood purification system of claim 1, further comprising:

the liquid level down-regulation module is used for regulating the liquid level of the venous pot down according to the detected second trigger operation of the user;

the second fault detection module is used for recording a second time length of the continuous triggering of the liquid level up-regulation module or the liquid level down-regulation module, and when the second time length is equal to a second preset time length, if the liquid level increment of the venous kettle is detected to be smaller than or equal to a first preset increment or the liquid level decrement of the venous kettle is detected to be smaller than or equal to a first preset decrement, a fault signal of the liquid level up-regulation module or a fault signal of the liquid level down-regulation module is sent;

and the third fault detection module is used for sending a first alarm signal when the liquid level detector does not send the liquid level prompt signal.

3. The blood purification system of claim 2, further comprising:

and the venous clamp is arranged on the blood circuit and used for cutting off the blood circuit according to the first alarm signal so as to interrupt the blood purification process and conducting the blood circuit according to the liquid level prompt signal so as to restart the blood purification process.

4. The blood purification system of claim 3, further comprising:

the weighing module is used for weighing the weight of the venous pot to obtain a weight detection amount;

and the first weight detection module is used for controlling the venous clamp to be switched off when detecting that the weight detection amount is greater than the weight warning value.

5. A blood purification system according to claim 4,

the weighing module is also used for calculating to obtain weight variation according to the weight detection value;

the blood purification system further comprises:

the second weight detection module is used for determining that the venous kettle has a liquid leakage fault or the venous kettle has a blockage fault if the weight variation is detected not to be within a preset error range when the liquid level up-regulation module does not detect the first trigger operation and the liquid level down-regulation module does not detect the second trigger operation;

the third weight detection module is used for determining that the venous kettle has a fault of too fast liquid level up-regulation if the weight variation is detected to be larger than the preset safety increment value when the liquid level up-regulation module detects the first trigger operation;

and the fourth weight detection module is used for determining that the venous kettle has a fault of too fast downward regulation of the liquid level if the weight variation is detected to be larger than a preset safe reduction value when the liquid level downward regulation module detects the second trigger operation.

6. The blood purification system of claim 1, further comprising:

the fluid infusion module is used for infusing the supplementing fluid into the venous pot according to the detected fluid infusion operation of the user;

and the timing module is used for recording a third time length of continuous access of the supplementing liquid in the venous kettle when the liquid level detector sends the liquid level prompt signal, and sending a liquid supplementing fault signal when the third time length is greater than or equal to a third preset time length.

7. The blood purification system of claim 6, further comprising:

the flow rate setting module is used for setting the flow rate of the fluid infusion according to the liquid level in the venous pot;

the fluid infusion module is further used for infusing the supplementary fluid into the intravenous pot according to the detected fluid infusion operation of the user and the fluid infusion flow rate.

8. The blood purification system of claim 1, further comprising:

the pressure detection module is used for detecting the pressure in the venous pot;

the pressure failure module is used for sending a second alarm signal when the pressure in the venous pot is greater than the preset pressure;

and the color detection module is used for detecting the color of the liquid in the venous pot.

9. The blood purification system of claim 1, wherein the blood circuit comprises an arterial line and a venous line, the blood purification system further comprising:

and the bubble sensing module is used for sending a third alarm signal if detecting that bubbles exist in a venous pipeline connected with the outlet end of the venous pot when the liquid level detector does not send the liquid level prompt signal.

10. The blood purification system of claim 1, wherein the blood circuit comprises an arterial line and a venous line, the blood purification system further comprising:

the flow rate detection module is used for detecting the flow rate of liquid in the arterial pipeline to obtain a flow rate detection value when the liquid level detector sends the liquid level prompt signal and the liquid level up-regulation module is triggered;

and the flow rate fault module is used for sending out a flow rate fault signal when the flow rate detection value is greater than a preset safe flow rate.