CN117883649A - Failure detection method for blood purification device, and storage medium - Google Patents
Failure detection method for blood purification device, and storage medium Download PDFInfo
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- CN117883649A CN117883649A CN202310754460.2A CN202310754460A CN117883649A CN 117883649 A CN117883649 A CN 117883649A CN 202310754460 A CN202310754460 A CN 202310754460A CN 117883649 A CN117883649 A CN 117883649A
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- 239000008280 blood Substances 0.000 title claims abstract description 306
- 210000004369 blood Anatomy 0.000 title claims abstract description 306
- 238000000746 purification Methods 0.000 title claims abstract description 114
- 238000001514 detection method Methods 0.000 title claims abstract description 21
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- 230000002572 peristaltic effect Effects 0.000 claims abstract description 238
- 239000012530 fluid Substances 0.000 claims abstract description 221
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- 239000013585 weight reducing agent Substances 0.000 claims abstract description 67
- 238000000034 method Methods 0.000 claims abstract description 58
- 239000002699 waste material Substances 0.000 claims description 133
- 238000001802 infusion Methods 0.000 claims description 64
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- 238000004590 computer program Methods 0.000 claims description 12
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- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 3
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- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
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Abstract
The application discloses a failure detection method of blood purification equipment, blood purification equipment and storage medium, the method includes: acquiring an actual weight reduction rate of a replacement fluid bag on a fluid supplementing branch of the blood purification device; acquiring the actual rotation speed of a first peristaltic pump on a fluid supplementing branch of the blood purifying device; and determining whether a liquid supplementing branch of the blood purifying device has faults according to the actual weight reduction rate of the replacement liquid bag, the actual rotating speed of the first peristaltic pump and a first preset corresponding relation between the weight reduction rate of the replacement liquid bag and the rotating speed of the first peristaltic pump. By the mode, whether the liquid supplementing branch has faults or not can be automatically and accurately judged.
Description
Technical Field
The present application relates to the field of blood purification technologies, and in particular, to a failure detection method of a blood purification device, and a storage medium.
Background
When the blood purifier purifies the blood of a patient, the blood of the patient loses some ions, and in order to achieve a better disease treatment effect of the blood purification, a solution with a disease treatment effect is output to a blood circuit before the purified blood is returned to the patient, and the solution and the purified blood are returned to the patient together. The process is a fluid infusion step during blood purification treatment, and the maximum blood purification treatment effect of the blood purification treatment can be ensured through the fluid infusion step.
However, in the related art, the liquid supplementing step can only rely on the medical staff to manually judge whether the liquid supplementing branch has a fault phenomenon, so that the workload of the medical staff can be increased, and on the other hand, the medical staff can hardly find the situation that the liquid supplementing branch is not installed in place on the first peristaltic pump, so that the safety of blood purification treatment of a patient is reduced.
Disclosure of Invention
Based on this, the embodiments of the present application provide a failure detection method of a blood purification device, and a storage medium, which can automatically and accurately determine whether a fluid replacement branch has a failure.
In a first aspect, embodiments of the present application provide a fault detection method of a blood purification apparatus, the method including:
acquiring an actual weight reduction rate of a replacement fluid bag on a fluid supplementing branch of the blood purification device;
acquiring the actual rotation speed of a first peristaltic pump on a fluid supplementing branch of the blood purifying device;
and determining whether a liquid supplementing branch of the blood purifying device has faults according to the actual weight reduction rate of the replacement liquid bag, the actual rotating speed of the first peristaltic pump and a first preset corresponding relation between the weight reduction rate of the replacement liquid bag and the rotating speed of the first peristaltic pump.
In a second aspect, embodiments of the present application provide a blood purification apparatus comprising: a memory and a processor; the memory is used for storing a computer program, and the processor is used for executing the computer program and realizing the fault detection method of the blood purifying device when the computer program is executed.
In a third aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to implement the failure detection method of a blood purification apparatus as described above.
According to the embodiment of the application, as the actual weight reduction rate of the replacement liquid bag and the actual rotating speed of the first peristaltic pump are combined with the first preset corresponding relation between the weight reduction rate of the replacement liquid bag and the rotating speed of the first peristaltic pump, whether the liquid supplementing branch has faults or not can be automatically and accurately judged, on one hand, the fault phenomenon of the liquid supplementing branch is not needed to be judged manually, on the other hand, the fault phenomenon of the liquid supplementing branch can be timely found, and further, a user can be timely reminded of the liquid supplementing risk caused by the faults of the liquid supplementing branch, so that technical support is provided for timely eliminating the liquid supplementing risk caused by the faults of the liquid supplementing branch.
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 view showing the structure of an embodiment of a blood purifying apparatus of the present application;
FIG. 2 is a schematic diagram of the basic principle of an embodiment of the blood purification apparatus of the present application;
FIG. 3 is a flow chart of an embodiment of a fault detection method of the blood purification apparatus of the present application;
FIG. 4 is a schematic view showing an example of a relationship between the weight reduction rate of the replacement fluid bag and the rotation speed of the first peristaltic pump in the failure detection method of the blood purifying apparatus of the present application;
FIG. 5 is a schematic view showing an example of a relationship between the blood flow rate of the blood circuit and the replacement fluid flow rate of the fluid replacement circuit in the failure detection method of the blood purification apparatus of the present application;
FIG. 6 is a schematic view showing an example of a relationship between the safety residual weight and the replacement fluid flow rate of the fluid replacement circuit in the failure detection method of the blood purification apparatus of the present application;
FIG. 7 is a schematic view of an embodiment of a first fluctuation curve and a second fluctuation curve in a failure detection method of the blood purification apparatus of the present application.
Main elements and symbol description:
1. a display screen; 2. a first weigh scale; 3. a second weigh scale; 4. a first hook; 5. a second hook; 6. a first peristaltic pump; 7. a second peristaltic pump; 8. a blood pump; 9. a replacement liquid bag; 10. a waste liquid bag; 11. a blood purifier; 12. a blood circuit; 13. a fluid supplementing branch; 14. a waste liquid branch; 15. and a stop valve.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The flow diagrams depicted in the figures are merely illustrative and not necessarily all of the elements and operations/steps are included or performed in the order described. For example, some operations/steps may be further divided, combined, or partially combined, so that the order of actual execution may be changed according to actual situations.
In order to better describe the embodiments of the present application, the technical content related to the present application will be described first.
The working principle of the blood purifying device is as follows: drawing out the blood of the patient and removing some pathogenic substances in the blood to achieve the purposes of purifying the blood and treating diseases; the blood purification treatment mode realized by the blood purification equipment is widely applied to clinical symptoms such as acute and chronic renal failure, poisoning, liver failure, sepsis and the like, and the blood purification equipment becomes a necessary medical instrument of each large and medium-sized hospital; fig. 1 shows a schematic structural view of an embodiment of a blood purification apparatus, which includes: the device comprises a display screen 1, a first weighing scale 2, a second weighing scale 3, a first lifting hook 4, a second lifting hook 5, a first peristaltic pump 6 and a second peristaltic pump 7; wherein, the first lifting hook 4 is used for hanging the replacement liquid bag, and the second lifting hook 5 is used for hanging the waste liquid bag.
Various functional modules are arranged on the blood purification equipment, and the blood purification treatment function can be realized based on the various functional modules in a combined way, and the operation state of each functional module has extremely important influence on the safety of the blood purification treatment of the blood purification equipment. The most basic functional modules of the blood purification device include: a blood pump, a first peristaltic pump, a blood circuit, a blood purifier, a replacement fluid bag, a fluid supplementing branch and the like. Fig. 2 shows a basic principle illustration of a blood purification device comprising: a blood circuit 12, a blood purifier 11 and a blood pump 8, wherein the blood pump 8 is arranged on the blood circuit 12, the rotation of the blood pump 8 provides driving force for the blood circuit 12, the blood circuit 12 is used for transmitting blood, and the blood pump 8 is used for controlling the flow rate of the blood and the flow direction of the blood in the blood circuit 12; the blood purifier 11 is provided in the blood circuit 12, and when blood flows through the blood purifier 11, the blood of the patient can be purified by the blood purifier 11, and the blood circuit 12 returns the purified blood to the patient. When the blood purifier 11 purifies the blood of the patient, some ions such as calcium ions, sodium ions and the like are lost in the blood of the patient, in order to achieve better disease treatment effect of the blood purification, the solution with the disease treatment effect is output to the blood circuit 12 before the purified blood is returned to the patient, and then the solution with the disease treatment effect and the purified blood are returned to the patient through the blood circuit 12; that is, when the patient is subjected to blood purification treatment, a fluid replacement step is required. As shown in fig. 2, the blood purification apparatus further includes: a replacement fluid bag 9, a first peristaltic pump 6, and a fluid replacement branch 13, wherein the replacement fluid bag 9 stores a replacement fluid in advance, and the replacement fluid comprises: calcium ion, sodium ion, substances having disease treatment, etc.; the fluid infusion branch 13 is connected between the replacement fluid bag 9 and the blood circuit 12, the first peristaltic pump 6 is arranged on the fluid infusion branch 13, the flow state of the fluid in the fluid infusion branch 13 can be controlled through the first peristaltic pump 6, for example, the flow rate and the flow direction of the fluid in the fluid infusion branch 13 can be controlled through the first peristaltic pump 6, and the optimal blood purification treatment effect of the blood purification treatment can be ensured through the fluid infusion step.
However, in the fluid replacement step in the related art, at some time, the fluid replacement branch is not installed in place on the first peristaltic pump, the fluid replacement branch is not installed on the first peristaltic pump at all, the replacement fluid in the replacement fluid bag is also output to the blood circuit due to the gravity effect, the first peristaltic pump cannot control the flow rate and the flow direction of the fluid in the fluid replacement branch, even the first peristaltic pump is stopped, but the fluid replacement branch still outputs the replacement fluid to the blood circuit, and the like, which seriously jeopardizes the safety of the blood purification treatment of a patient. The problem of the liquid supplementing step in the related art can only depend on the medical staff to manually judge whether the liquid supplementing branch has a fault phenomenon, which can certainly increase the workload of the medical staff, the continuous time of the patient receiving the blood purification treatment is usually 12-24 hours, and the medical staff cannot monitor the installation state of the liquid supplementing branch on the first peristaltic pump in the whole course within the continuous time of the blood purification treatment; on the other hand, more importantly, for the situation that the fluid infusion branch is not installed in place on the first peristaltic pump, medical staff generally have difficulty in finding, and this can lead to the blood purification equipment to be in a fault fluid infusion state for a long time, so that the safety of blood purification treatment of patients is reduced.
According to the embodiment of the application, as the actual weight reduction rate of the replacement liquid bag and the actual rotating speed of the first peristaltic pump are combined with the first preset corresponding relation between the weight reduction rate of the replacement liquid bag and the rotating speed of the first peristaltic pump, whether the liquid supplementing branch has faults or not can be automatically and accurately judged, on one hand, the fault phenomenon of the liquid supplementing branch is not needed to be judged manually, on the other hand, the fault phenomenon of the liquid supplementing branch can be timely found, and further, a user can be timely reminded of the liquid supplementing risk caused by the faults of the liquid supplementing branch, so that technical support is provided for timely eliminating the liquid supplementing risk caused by the faults of the liquid supplementing branch.
In order to better illustrate the detailed implementation of the embodiments of the present application, a brief description of some basic knowledge follows. The first peristaltic pump and the second peristaltic pump belong to peristaltic pumps, and the control principle of the peristaltic pumps is as follows: the pump head is driven by the rotation of the motor, then the pump head extrudes the pipeline, and the liquid in the pipeline is transmitted according to a specific flow rate and a specific flow direction; the control mode of the peristaltic pump can refer to the control mode of the motor; wherein the structure of the peristaltic pump belongs to a conventional mechanical structure, the mechanical structure of the peristaltic pump is not shown here.
When the fluid replacement branch is normally installed on the first peristaltic pump, a driving force is provided to the fluid replacement branch through rotation of the first peristaltic pump, and a replacement fluid bag is usually installed on the top of the blood purification device, so that the flow state of replacement fluid in the fluid replacement branch can be controlled through the first peristaltic pump. But for some reason (for example: the user forgets to install the fluid infusion branch on the first peristaltic pump, or the user does not have experience with properly installing the fluid infusion branch on the first peristaltic pump), a fault may occur which may be distinguished as two situations: the first is that the fluid infusion branch is installed but not in place in the first peristaltic pump; the second is that the fluid infusion branch is not installed on the first peristaltic pump at all; when the fault occurs, the replacement liquid in the liquid supplementing branch is not controlled by the first peristaltic pump, the speed of the replacement liquid output by the liquid supplementing branch is uncontrollable, and the liquid supplementing step of the blood purifying device is easy to fail.
The embodiment of the application discloses a fault detection method of a blood purification device, and in combination with fig. 1 and 2, the blood purification device includes: the blood circulation device comprises a blood circuit 12, a fluid supplementing branch 13, a replacement fluid bag 9, a first peristaltic pump 6 and a first weighing scale 2, wherein the first weighing scale 2 is arranged at the top of the blood purifying device, the replacement fluid bag 9 is suspended on the first weighing scale 2, the replacement fluid bag 9 is filled with a replacement fluid with a preset volume, the blood circulation device 12 is used for conveying blood, a first end of the fluid supplementing branch 13 is connected with the replacement fluid bag 9, a second end of the fluid supplementing branch 13 is connected with the blood circulation device 12, and the first peristaltic pump 6 is used for controlling the flow rate of the liquid in the fluid supplementing branch 13 when the fluid supplementing branch 13 is correctly installed.
The specific composition of the replacement fluid stored in the replacement fluid bag 9 may be set according to the clinical treatment requirement of the user, for example, the replacement fluid may contain sodium ions, calcium ions, potassium ions and the like, and the replacement fluid may also be a plasma solution and the like.
It should be noted that, in the embodiment of the present application, the "first weighing scale is disposed at the top of the blood purifying apparatus, the replacement liquid bag is suspended from the first weighing scale", the replacement liquid bag stores the replacement liquid, and the replacement liquid bag is suspended at the top of the blood purifying apparatus, so that pollution can be avoided as much as possible; the replacement liquid bag is generally pushed by using a trolley, and is hung at the top of the blood purifying device, so that the operation of a user is more convenient. When the first peristaltic pump is stopped, the replacement liquid in the replacement liquid bag is output to the blood circuit under the action of gravity, and a fault phenomenon occurs.
As shown in fig. 3, the fault detection method of the blood purification apparatus according to the embodiment of the present application includes: step S101, step S102, and step S103.
Step S101: the actual weight reduction rate of the replacement fluid bag on the fluid replenishing branch of the blood purification apparatus is obtained.
In embodiments of the present application, a first weigh scale may be used to detect the actual weight reduction rate of the replacement fluid bag. In particular, the actual weight reduction rate of the replacement fluid bag may represent the rate of replacement fluid output to the blood circuit.
Step S102: the actual rotation speed of the first peristaltic pump on the fluid infusion branch of the blood purification device is obtained.
In this embodiment of the present application, the hall sensor may be used to detect the actual rotation speed of the first peristaltic pump, for example, the actual rotation speed of the first peristaltic pump is: 23r/min.
It should be noted that, step S101 and step S102 have no obvious sequential relationship, and may be performed simultaneously.
Step S103: and determining whether a liquid supplementing branch of the blood purifying device has faults according to the actual weight reduction rate of the replacement liquid bag, the actual rotating speed of the first peristaltic pump and a first preset corresponding relation between the weight reduction rate of the replacement liquid bag and the rotating speed of the first peristaltic pump.
In the embodiment of the application, a first preset corresponding relation between the weight reduction rate of the replacement liquid bag and the rotating speed of the first peristaltic pump is established in advance. As described above, the fluid replacement branch is connected between the replacement fluid bag and the blood circuit, and if the fluid replacement branch is properly mounted on the first peristaltic pump, the rotational speed of the first peristaltic pump and the weight reduction rate of the replacement fluid bag will both be in positive correlation, for example, when the rotational speed of the first peristaltic pump is higher, the driving force provided by the first peristaltic pump to the fluid replacement branch is also higher, the flow rate of the fluid in the fluid replacement branch is also higher, and the rate of the replacement fluid output by the replacement fluid bag is also higher. According to the embodiment of the application, before the blood purification equipment leaves the factory, a first preset corresponding relation between the weight reduction rate of the replacement liquid bag and the rotating speed of the first peristaltic pump can be summarized through multiple clinical technology experiments, wherein the first preset corresponding relation represents a standard comparison relation between the weight reduction rate of the replacement liquid bag and the rotating speed of the first peristaltic pump. The first preset corresponding relation can be obtained through clinical technology experiments, and the specific method comprises the following steps: and (3) correctly installing the fluid infusion branch on the first peristaltic pump, continuously adjusting the rotating speed of the first peristaltic pump, recording the weight reduction rate of the replacement fluid bag, and performing curve fitting according to the recorded values of the weight reduction rate of the replacement fluid bag and the rotating speed of the first peristaltic pump (for example, a curve fitting method can adopt a least square method and the like) so as to obtain a theoretical function, wherein the theoretical function is a first preset corresponding relation. By way of example, fig. 4 shows a graph of the relationship between the rate of weight reduction of the replacement fluid bag and the rotational speed of the first peristaltic pump; the first preset corresponding relation can be used as a judging standard of whether the fluid supplementing branch has faults or not.
Specifically, the actual weight reduction rate of the replacement fluid bag and the actual rotation speed of the first peristaltic pump represent the actual flowing state of the replacement fluid in the fluid replacement branch, and whether the fluid replacement branch of the blood purification device has a fault or not can be determined according to the actual weight reduction rate of the replacement fluid bag, the actual rotation speed of the first peristaltic pump and a first preset corresponding relation between the weight reduction rate of the replacement fluid bag and the rotation speed of the first peristaltic pump.
When the actual weight reduction rate of the replacement liquid bag and the actual rotating speed of the first peristaltic pump do not accord with the first preset corresponding relation in the first preset continuous time, the flow of the replacement liquid in the liquid supplementing branch is not controlled by the first peristaltic pump, the liquid supplementing branch has faults, and at the moment, a prompt can be sent to a user through prompt information: the pipeline is not safe in place on the peristaltic pump, or the pipeline is not installed on the peristaltic pump at all, and a user can immediately treat the fault on the fluid infusion branch after receiving the prompt message, so that the safety of the fluid infusion step of the blood purification equipment is ensured.
In some embodiments, step S103, the determining whether the fluid-supplementing branch of the blood purifying device has a fault according to the actual weight reduction rate of the replacement fluid bag, the actual rotation speed of the first peristaltic pump, and the first preset correspondence between the weight reduction rate of the replacement fluid bag and the rotation speed of the first peristaltic pump may include: and under the condition that the actual weight reduction rate of the replacement liquid bag and the actual rotating speed of the first peristaltic pump do not accord with the first preset corresponding relation and the duration time of the first preset corresponding relation is larger than or equal to a first preset continuous time, determining that a fault exists in a liquid supplementing branch of the blood purifying device, and sending out first fault prompt information.
When the actual weight reduction rate of the replacement liquid bag is detected, a standard rotating speed corresponding to the actual weight reduction rate can be found according to the first preset corresponding relation, and when the absolute value of the difference between the standard rotating speed and the actual rotating speed of the first peristaltic pump is detected to be larger than a first preset difference value, the fact that the actual weight reduction rate of the replacement liquid bag and the actual rotating speed of the first peristaltic pump do not accord with the first preset corresponding relation is judged.
Or when the actual rotation speed of the first peristaltic pump is detected, a standard reduction rate corresponding to the actual rotation speed can be found according to the first preset corresponding relation, and when the absolute value of the difference between the standard reduction rate and the actual weight reduction rate of the replacement liquid bag is detected to be larger than a second preset difference value, the fact that the actual weight reduction rate of the replacement liquid bag and the actual rotation speed of the first peristaltic pump do not accord with the first preset corresponding relation is judged.
It should be noted that, the first preset continuous time is used for avoiding errors in the fault judging process of the fluid infusion branch, and avoiding accidental errors in the fault judging process of the fluid infusion branch; optionally, the first preset continuous time is: 60S. For example, when the duration that the actual weight reduction rate of the replacement fluid bag and the actual rotation speed of the first peristaltic pump do not conform to the first preset corresponding relation is smaller than the first preset continuous time, the duration is very likely that the fluid infusion branch is subject to external interference and accidental errors, so that instantaneous errors occur in the flowing state of the replacement fluid in the fluid infusion branch, for example, the blood purification device easily causes instantaneous errors in the flowing state of the replacement fluid in the fluid infusion branch in the moving process, and for example, the fluid infusion branch is touched abnormally, so that instantaneous errors occur in the flowing state of the replacement fluid in the fluid infusion branch; therefore, only when the duration time that the actual weight reduction rate of the replacement liquid bag and the actual rotating speed of the first peristaltic pump do not accord with the first preset corresponding relation is greater than or equal to the first preset continuous time, the fault of the liquid supplementing branch is judged, and the fault judgment error of the blood purifying equipment is avoided.
The degree of deviation of the actual fluid-supplementing state of the fluid-supplementing branch from the standard state of the fluid-supplementing branch can be judged by detecting the actual weight reduction rate of the replacement fluid bag and the actual rotating speed of the first peristaltic pump; therefore, the embodiment of the application can accurately judge whether the liquid supplementing branch breaks down, identify whether the liquid supplementing branch is installed in place or not, judge whether the pipeline is not installed at all on the peristaltic pump, ensure the liquid supplementing safety of the liquid supplementing branch, and overcome the defect that the fault phenomenon of the liquid supplementing branch is judged manually in the related technology.
In some embodiments, the method further comprises: step S104.
Step S104: and when the actual weight reduction rate of the replacement liquid bag exceeds the preset safety rate range, sending out a second fault prompt message.
Specifically, the preset safety rate range represents a safety weight change numerical range of the replacement fluid bag, the preset safety rate range is associated with the blood flow of the blood circuit of the blood purifying device, and the preset safety rate range can be obtained according to the blood flow of the blood circuit through multiple clinical technology experiments, for example, the blood flow of the blood circuit is 10 ml/min-50 ml/min, and the preset safety rate range of the replacement fluid bag is: 20 g/min-60 g/min.
When the actual weight reduction rate of the replacement liquid bag is detected to be in a preset safe rate range, the rate of the replacement liquid output by the replacement liquid bag is in a safe state, the blood circuit is normally connected with the replacement liquid, and the blood purifying equipment is in a safe running state; when the actual weight reduction rate of the replacement liquid bag is detected not to be in the preset safety rate range, the actual weight reduction rate of the replacement liquid bag is too large or too small, the rate of the replacement liquid output by the replacement liquid bag is in a fault state, and the blood circuit cannot normally access the replacement liquid. For example, when the actual weight reduction rate of the replacement fluid bag is too large, the rate of access of the blood circuit to the replacement fluid is too large, which can reduce the blood purification treatment effect of the patient; for example, during hemodialysis treatment, if the rate of access of the blood circuit to the replacement fluid is too high, this can reduce the hemodialysis treatment effectiveness of the patient; for example, when the actual weight reduction rate of the replacement fluid bag is too small, the rate at which the blood circuit is accessed to the replacement fluid is too small, which may prevent the patient from accessing sufficient replacement fluid, which may result in a lack of sodium, calcium, etc. in the patient's blood. Therefore, when the speed of the replacement liquid output by the replacement liquid bag is in a fault state, a prompt can be sent to a user through the second fault prompt information: the speed of the replacement liquid output by the replacement liquid bag is in a fault state; and the user can immediately process the fault state after receiving the second fault prompt information, so that the fault processing response speed is improved.
In some embodiments, the method further comprises: step S105.
Step S105: and when the actual rotating speed of the first peristaltic pump exceeds a preset safe rotating speed range, sending out third fault prompt information.
Specifically, the preset safe rotation speed range may represent a rotation speed safety variation range of the first peristaltic pump, and the first peristaltic pump is in a safe operation state only when the actual rotation speed of the first peristaltic pump is in the preset safe rotation speed range, and the driving force is provided for the fluid infusion branch through the operation of the first peristaltic pump, so that the replacement fluid in the fluid infusion branch can normally flow. It should be noted that the preset safe rotation speed range belongs to nameplate data of the first peristaltic pump, when the manufacturer produces the first peristaltic pump, the preset safe rotation speed range is set by the manufacturer before leaving the factory, so that the first peristaltic pump is purchased in the market, and when the first peristaltic pump is applied to the blood purifying device, the preset safe rotation speed range can be directly obtained. It should be noted in particular that the preset safe rotational speed range is only for the safe rotational characteristics of the first peristaltic pump, which does not mean: when the actual rotation speed of the first peristaltic pump is in a preset safe rotation speed range, the liquid supplementing step of the liquid supplementing branch is necessarily in a safe state; the preset safe rotation speed range of the first peristaltic pump is not related to the safe flow range of the replacement liquid in the liquid supplementing branch.
The preset safe rotation speed range is as follows: when the actual rotating speed of the first peristaltic pump is detected to be less than 10r/min, the rotating speed of the first peristaltic pump is too low from 10r/min to 60 r/min; when the actual rotating speed of the first peristaltic pump is detected to be larger than 60r/min, the rotating speed of the first peristaltic pump is too high; the rotational speed of first peristaltic pump is too low, or the rotational speed of first peristaltic pump is too high, can send the suggestion to the user through sending third trouble prompt message: the first peristaltic pump is in a fault running state, so that a user can timely process the fault state of the first peristaltic pump, and the running safety of the first peristaltic pump is improved.
In some embodiments, the method may further comprise: step S106.
Step S106: and setting the first preset continuous time according to the pipeline length of the fluid infusion branch.
Specifically, the relationship exists between the length of the pipeline of the fluid infusion branch and the first preset continuous time, when the length of the pipeline of the fluid infusion branch is longer, the flowing time of the replacement fluid in the fluid infusion branch is longer, when the fluid infusion branch is not correctly installed in the first peristaltic pump, the fault of the fluid infusion branch can be reflected by the weight change condition of the replacement fluid bag, and the first preset continuous time is longer; in contrast, when the length of the pipeline of the fluid infusion branch is shorter, the flowing time of the replacement fluid in the fluid infusion branch is shorter, when the fluid infusion branch is not properly installed in the first peristaltic pump, the fault of the fluid infusion branch can be reflected through the weight change condition of the replacement fluid bag, the shorter the time is required, and the shorter the first preset continuous time is. Illustratively, table 1 below is a comparison of clinical experience.
TABLE 1
| Pipeline length of fluid infusion branch (unit: m) | First preset continuous time (unit: s) |
| Less than 0.3 | 48 |
| Greater than or equal to 0.3 and less than 0.35 | 54 |
| Greater than or equal to 0.35 and less than 0.43 | 50 |
| Greater than or equal to 0.43 and less than 0.5 | 60 |
| Greater than or equal to 0.5 | 65 |
When the length of the pipeline of the fluid infusion branch is detected, a first preset continuous time corresponding to the length of the pipeline can be obtained according to the table 1, and the fault judgment error caused by accidental fluctuation in the fluid flowing process in the fluid infusion branch can be exactly eliminated by the first preset continuous time. According to the embodiment of the application, the first preset continuous time can be accurately and scientifically set, and the judging precision and the judging efficiency of the faults of the fluid infusion branch are improved.
In some embodiments, before the step S101, the step of obtaining the actual weight reduction rate of the replacement fluid bag on the fluid infusion branch of the blood purifying apparatus may further include: step S107 and step S108.
Step S107: a blood flow of a blood circuit of the blood purification device is obtained.
Step S108: when the blood flow of the blood circuit is smaller than or equal to the preset highest safe flow and is larger than or equal to the preset lowest safe flow, the first peristaltic pump is controlled to rotate so as to drive the fluid infusion branch to output the replacement fluid in the replacement fluid bag to the blood circuit.
Specifically, when the blood circuit is connected to the blood of a patient, the blood circuit can be used for carrying out blood purification treatment on the blood of the patient, and the blood purification treatment state of the patient can be accurately identified by detecting the blood flow of the blood circuit; when the replacement liquid is output to the blood circuit by the liquid supplementing branch, if the blood flow of the blood circuit is too large, the liquid pressure in the blood circuit is too large, and even the safety of the blood purifying treatment process of a patient is damaged due to the too large blood flow of the blood circuit after the liquid supplementing is carried out; if the blood flow in the blood circuit is too small, the replacement fluid is wasted by the fluid replacement circuit, since it is likely that this would be the case: the blood purification treatment process of the patient is in an ending stage, or the blood in the blood circuit is in a fault flow state; whether the blood flow of the blood circuit is too great or the blood flow of the blood circuit is too small, this indicates that the blood flow of the blood circuit does not meet the fluid replacement condition.
When meeting the following fluid infusion conditions: the preset minimum safe flow is less than or equal to the blood flow of the blood circuit and less than or equal to the preset maximum safe flow, and the first peristaltic pump is controlled to rotate so as to start the fluid supplementing step. When the fluid replacement condition is not met, the first peristaltic pump is controlled to stop so as to prevent faults in the blood purification treatment process.
The following two points need to be described: the first, preset minimum safe flow and preset maximum safe flow are only used for judging whether the blood flow of the blood circuit meets the fluid replacement condition or not, and are not used for judging whether the blood flow of the blood circuit is in a safe flow state or not, and even if the blood flow of the blood circuit does not meet the fluid replacement condition, the blood flow of the blood circuit is still in a normal state; the second, preset minimum safe flow and preset maximum safe flow are both preset values after multiple tests. For example, the preset minimum safe flow is: 8ml/min, and the preset highest safe flow is 80ml/min.
In some embodiments, the method may further comprise: step S109 and step S110.
Step S109: and converting according to the actual weight reduction rate of the replacement liquid bag to obtain the replacement liquid flow of the liquid supplementing branch.
Step S110: and drawing and displaying a relation curve between the blood flow of the blood circuit and the replacement fluid flow of the fluid infusion branch.
When the fluid replacement branch is used for supplementing the blood circuit, the replacement fluid flow of the fluid replacement branch is obtained through conversion according to the actual weight reduction rate of the replacement fluid bag, and a relation curve between the blood flow of the blood circuit and the replacement fluid flow of the fluid replacement branch is drawn and displayed. The user can immediately know that the relationship curve is seen: the relationship between the state of flow of the replacement fluid in the fluid replacement circuit and the state of flow of blood in the blood circuit is shown in fig. 5.
In step S109, the replacement fluid flow of the fluid replacement branch is obtained by converting the actual weight reduction rate of the replacement fluid bag, and the conversion formula is as follows: when the actual weight reduction rate is obtained, the actual volume reduction rate can be obtained according to the conversion formula, wherein the actual volume reduction rate is the displacement fluid flow of the fluid infusion branch. For example, the actual weight reduction rate is: the actual volume reduction rate of the replacement liquid bag can be calculated by a conversion formula at 10g/min, and is as follows: the replacement liquid flow rate of the liquid supplementing branch is 16 ml/min: 16ml/min.
In some embodiments, the method may further comprise: step S111, step S112, and step S113.
Step S111: and obtaining the safe residual weight of the replacement liquid bag according to the replacement liquid flow of the liquid supplementing branch.
Step S112: the actual weight of the replacement fluid bag is obtained.
Step S113: and when the actual weight of the replacement liquid bag is smaller than or equal to the safe residual weight of the replacement liquid bag, sending out fourth fault prompt information.
Specifically, when the fluid infusion branch is used for infusing the blood circuit, the flow rate of the replacement fluid is reflected by the output rate of the replacement fluid from the replacement fluid bag, and when the flow rate of the replacement fluid in the fluid infusion branch is larger, the rate of the replacement fluid accessed into the blood circuit is also larger. The safety residual weight of the replacement liquid bag is used for measuring whether the replacement liquid bag has liquid supplementing capability, when the actual weight of the replacement liquid bag is smaller than or equal to the safety residual weight of the replacement liquid bag, the fact that the total amount of the replacement liquid stored in the replacement liquid bag is insufficient is indicated, and a prompt can be sent to a user by sending out fourth fault prompt information: the total amount of the replacement liquid stored in the replacement liquid bag is insufficient, and the user can timely control the first peristaltic pump to stop after receiving the fourth fault prompt message so as to prevent the problem that the first peristaltic pump still operates under the condition of empty bag.
The safety residual weight is determined by the replacement liquid flow rate of the liquid supplementing branch, and when the replacement liquid flow rate of the liquid supplementing branch is higher, the speed of the replacement liquid bag outputting the replacement liquid is higher, and the safety residual weight is higher. The safety residual weight and the replacement liquid flow of the liquid supplementing branch can be expressed by adopting a function curve; when the replacement fluid flow of the fluid replacement branch is obtained, the corresponding safe residual weight can be obtained according to the curve in fig. 6, and the replacement fluid in the replacement fluid bag can be output to the blood circuit through the fluid replacement branch only when the actual weight of the replacement fluid bag is larger than the safe residual weight of the replacement fluid bag, so that the continuity and stability of the fluid replacement step are ensured. It should be noted that, the curve in fig. 6 is obtained after multiple clinical tests, and the correspondence between the replacement fluid flow rate of the fluid infusion branch and the safe residual weight of the replacement fluid bag, that is, the curve in fig. 6, can be obtained by performing multiple tests on the replacement fluid flow rate of the fluid infusion branch and the safe residual weight of the replacement fluid bag.
For example, when the obtained replacement fluid flow rate of the fluid replacement branch is: 20ml/min, the safe residual weight of the replacement fluid bag was 50g according to the curve in FIG. 6; in the initial starting state that the replacement liquid bag is full of replacement liquid, the actual weight of the replacement liquid bag is 500g, the actual weight of the replacement liquid bag continuously drops along with the continuous liquid supplementing step of the liquid supplementing branch, and when the actual weight of the replacement liquid bag is less than or equal to 50g, fourth fault prompt information is sent out and used for giving a prompt to a user: the residual replacement liquid stored in the replacement liquid bag is insufficient; the user receives the fourth fault prompt message and immediately processes the fault of insufficient storage of the replacement liquid bag; therefore, the embodiment of the application can ensure the continuity of the flow of the replacement liquid in the liquid supplementing branch.
In some embodiments, if a first preset correspondence between the rate of weight reduction of the replacement fluid bag and the rotational speed of the first peristaltic pump is not established in advance, the method further comprises: step S114.
Step S114: and establishing a first preset corresponding relation between the weight reduction rate of the replacement liquid bag and the rotating speed of the first peristaltic pump.
In some embodiments, in step S114, the establishing a first preset correspondence between the weight reduction rate of the replacement fluid bag and the rotational speed of the first peristaltic pump may further include: when the temperature of the replacement liquid is detected to be in a preset safety temperature range, a first preset corresponding relation between the weight reduction rate of the replacement liquid bag and the rotating speed of the first peristaltic pump is established.
Specifically, the temperature of the replacement fluid in the fluid infusion branch can have a great influence on the driving control performance of the first peristaltic pump. For example, when the fluid infusion branch is correctly installed on the first peristaltic pump, under the condition that the rotation speed of the first peristaltic pump is the same, the driving force generated by the rotation of the first peristaltic pump on the fluid infusion branch is also the same, the liquid pressure in the fluid infusion branch is affected by the temperature, when the temperature of the replacement liquid in the fluid infusion branch is higher, the replacement liquid is heated and expands, the liquid pressure in the fluid infusion branch is also higher, the operation of the first peristaltic pump provides driving force for the fluid infusion branch, and the replacement liquid flow of the fluid infusion branch is also lower. Conversely, when the temperature of the replacement liquid in the liquid supplementing branch is lower, the replacement liquid is cooled and contracted, the liquid pressure in the liquid supplementing branch is also smaller, and the operation of the first peristaltic pump provides driving force for the liquid supplementing branch, so that the replacement liquid flow rate of the liquid supplementing branch is also higher.
It should be noted that, when a first preset correspondence between the weight reduction rate of the replacement fluid bag and the rotation speed of the first peristaltic pump is established, the replacement fluid bag and the first peristaltic pump are usually required to be tested respectively, in order to store the replacement fluid stored in the replacement fluid bag, the temperature of the replacement fluid is usually relatively low, and there is a large difference between the temperature of the replacement fluid and the temperature of the replacement fluid when the fluid supplementing branch performs the fluid supplementing step (because the replacement fluid in the replacement fluid bag is usually heated when the fluid supplementing branch performs the fluid supplementing step, so that the temperature of the replacement fluid in the replacement fluid bag can be in a preset safe temperature range); in order to overcome the temperature difference, the temperature of the replacement liquid in the replacement liquid bag needs to be detected in a test stage, so that when the temperature of the replacement liquid is in a preset safe temperature range, a first preset corresponding relation between the weight reduction rate of the replacement liquid bag and the rotating speed of the first peristaltic pump is established. Therefore, the interference caused by the temperature difference on the fault judgment of the fluid supplementing branch can be eliminated.
The preset safe temperature range is preset, wherein the preset safe temperature range represents a normal fluctuation value of the temperature of the replacement liquid, and meanwhile, the preset safe temperature range also represents a safe temperature range when the liquid supplementing branch performs the liquid supplementing step and the human body accesses blood. For example, the preset safe temperature range is: 33-38 ℃; only when the temperature of the replacement liquid is within a preset safe temperature range, the interference of the temperature fluctuation error on the driving control performance of the first peristaltic pump is eliminated. Sampling and counting the rotating speed of the first peristaltic pump and the weight reduction rate of the replacement liquid bag for a plurality of times respectively to establish a first preset corresponding relation between the weight reduction rate of the replacement liquid bag and the rotating speed of the first peristaltic pump; based on the first preset corresponding relation, whether the liquid supplementing branch has faults or not can be judged, the judging accuracy of the faults of the liquid supplementing branch is improved, and false alarms and false prompts caused by temperature change of replacement liquid in the liquid supplementing step are eliminated.
In some embodiments, as shown in fig. 1 and 2, the blood purification apparatus further comprises: a waste branch 14, a waste bag 10, a second peristaltic pump 7, and a second weighing scale 3, wherein the second weighing scale 3 is disposed at the bottom of the blood purifying device, the waste bag 10 is suspended from the second weighing scale 3, a first end of the waste branch 14 is connected to the waste bag 10, a second end of the waste branch 14 is connected to the blood circuit 12, and the second peristaltic pump 7 is used for controlling the flow rate of the liquid in the waste branch 14 when the waste branch 14 is properly installed; when the blood is transferred through the blood circuit 12, the blood of the patient can be purified by the blood purifier 11, some redundant moisture, some pathogenic substances and the like in the blood of the patient are removed, the redundant moisture, the pathogenic substances and the like form waste liquid together, the waste liquid generated during the blood purification treatment is output to the waste liquid bag 10 through the waste liquid branch 14 on the blood purification device, and the waste liquid is stored by the waste liquid bag 10; when the blood purifying device is applied to different blood purifying treatment modes, the components of waste liquid generated during the blood purifying treatment are also different; for example, when the blood purification apparatus is applied in a hemodialysis treatment mode, waste liquid generated at the time of the blood purification treatment contains waste dialysate and excessive moisture removed from blood; also, for example, when the blood purification apparatus is applied in a plasmapheresis treatment mode, waste liquid generated at the time of blood purification treatment contains plasma removed from the blood of the patient. Therefore, when the blood purification treatment is carried out by the blood purification equipment, the flow rate of the waste liquid in the waste liquid branch 14 can be controlled by the second peristaltic pump 7; the total amount of waste liquid stored in the waste liquid bag 10 can be weighed by the second weighing scale 3.
It should be noted that, the waste liquid bag 10 is suspended at the bottom of the blood purifying apparatus, which is determined by the structural characteristics of the blood purifying apparatus itself, a large amount of waste liquid, such as 3 to 7 liters of waste liquid, is generated when the blood purifying apparatus is performing the blood purifying treatment, and after the waste liquid bag 10 stores the waste liquid, the entire weight of the waste liquid bag 10 becomes very heavy, so that the waste liquid bag 10 is suspended at the bottom of the blood purifying apparatus, and at the same time, since the waste liquid stored in the waste liquid bag 10 does not need to consider the infection problem, the waste liquid bag 10 can be suspended at the bottom of the blood purifying apparatus.
In some embodiments, the method may further comprise: step S115, step S116, and step S117.
Step S115: an actual weight increase rate of a waste liquid bag on a waste liquid branch of the blood purification apparatus is obtained.
Step S116: and acquiring the actual rotating speed of a second peristaltic pump on the waste liquid branch of the blood purification device.
Step S117: and under the condition that the actual weight increase rate of the waste liquid bag, the actual rotating speed of the second peristaltic pump does not accord with a second preset corresponding relation between the weight increase rate of the waste liquid bag and the rotating speed of the second peristaltic pump, and the duration time of the second preset corresponding relation is not more than or equal to a second preset continuous time, determining that a waste liquid branch of the blood purifying device has faults, and sending out fifth fault prompt information.
Since the embodiments of S115 to S117 are similar to the embodiments of S101 to S103, the embodiments of S115 to S117 are described with reference to the embodiments of S101 to S103, and only the differences between the two embodiments will be described herein.
Specifically, the second preset corresponding relation represents a standard comparison relation between the weight increase rate of the waste liquid bag and the rotating speed of the second peristaltic pump, wherein the second preset corresponding relation can be obtained through clinical technology experiments; after the second preset corresponding relation is obtained, whether the waste liquid flow fault exists in the waste liquid branch is judged by taking the second preset corresponding relation as a reference, so that the safety and the continuity of blood purification treatment of the blood purification equipment are greatly ensured.
In combination with the above, the embodiment of the application can weigh the replacement liquid bag and the waste liquid bag respectively, accurately judge whether the liquid supplementing branch has faults or not and whether the waste liquid branch has flow faults or not, and solve the problem that in the related technology, only the manual subjective judgment is needed to judge whether the liquid flow in the pipeline has faults or not; therefore, the embodiment of the application combines the fault judging steps of the fluid supplementing branch and the waste liquid branch to ensure the safety of blood flow in the blood circuit, and improves the safety of blood purification treatment of the blood purification equipment.
In some embodiments, the method may further comprise: step S118 and step S119.
Step S118: and determining the ratio between the actual rotation speed of the first peristaltic pump and the actual rotation speed of the second peristaltic pump under the condition that the actual rotation speed of the first peristaltic pump and the actual rotation speed of the second peristaltic pump are not 0.
Step S119: and when the ratio is not in the preset safety ratio range, a sixth fault prompt message is sent out.
Specifically, when the actual rotation speed of the first peristaltic pump and the actual rotation speed of the second peristaltic pump are both different from 0, the two steps of "replenishing the blood circuit by the replenishing branch" and "outputting the waste liquid generated during the blood purifying treatment to the waste liquid bag through the waste liquid branch" are described as being performed simultaneously. The flow of the replacement liquid in the liquid supplementing branch can be changed by adjusting the actual rotation speed of the first peristaltic pump, and the actual rotation speed of the first peristaltic pump and the flow of the replacement liquid in the liquid supplementing branch can show a specific functional relation; similarly, by adjusting the actual rotational speed of the second peristaltic pump, the flow rate of the waste liquid in the waste liquid branch can be changed, and the actual rotational speed of the second peristaltic pump and the flow rate of the waste liquid in the waste liquid branch can both show a specific functional relationship.
The ratio between the actual rotational speed of the first peristaltic pump and the actual rotational speed of the second peristaltic pump is representative of: when the blood purification treatment process of the patient is in a normal state, the flow rate of the replacement liquid accessed by the blood circuit and the flow rate of the waste liquid output by the blood circuit are in an equilibrium state, and the ratio of the flow rate of the replacement liquid in the fluid supplementing branch to the flow rate of the waste liquid in the waste liquid branch is further obtained: both the actual rotational speed of the first peristaltic pump and the actual rotational speed of the second peristaltic pump should be in an equilibrium state; calculating the ratio between the actual rotation speed of the first peristaltic pump and the actual rotation speed of the second peristaltic pump to obtain whether the flow of the replacement liquid and the flow of the waste liquid are balanced or not; when the ratio between the actual rotation speed of the first peristaltic pump and the actual rotation speed of the second peristaltic pump is in a preset safety ratio range, the following is described: the flow of the blood circuit access replacement fluid and the flow of the blood circuit output waste fluid are both in equilibrium, and the patient is in the normal blood purification treatment process. When the ratio between the actual rotation speed of the first peristaltic pump and the actual rotation speed of the second peristaltic pump is not in the preset safety ratio range, the following is described: the flow rate of the replacement fluid connected to the blood circuit and the flow rate of the waste fluid output from the blood circuit are not in an equilibrium state, and the fluid replenishing step of the blood circuit and the waste fluid output step of the blood circuit are not in coordination, and a sixth fault prompt message (for example, an acousto-optic prompt message) is sent to prompt the user: the liquid supplementing step and the waste liquid outputting step are not coordinated, and the user can immediately treat the fault after receiving the sixth fault prompt information, so that the safety of the first peristaltic pump and the second peristaltic pump during simultaneous operation is ensured.
It should be noted that, the preset safety ratio range is a preset value, the preset safety ratio range is determined by the blood purification treatment mode of the patient, and when the blood purification device is applied in different blood purification treatment modes, the preset safety ratio range is also different, for example, for the hemodialysis treatment mode, the preset safety ratio range may be: 0.6 to 0.8; for example, for a plasmapheresis treatment mode, the preset safe ratio range may be: 0.91 to 1.03; after a plurality of clinical technical tests, a preset safety ratio range can be obtained, and whether the actual rotation speed of the first peristaltic pump and the actual rotation speed of the second peristaltic pump are in a balanced state or not can be judged based on the preset safety ratio range.
For example, when a hemodialysis treatment mode is selected, the preset safe ratio range may be: 0.6-0.8, when the ratio between the actual rotation speed of the first peristaltic pump and the actual rotation speed of the second peristaltic pump is smaller than 0.6, the flow of the replacement liquid is too small relative to the flow of the waste liquid, which easily causes serious dehydration of patients or the lack of inorganic ions of the patients; when the ratio between the actual rotation speed of the first peristaltic pump and the actual rotation speed of the second peristaltic pump is greater than 0.8, the flow rate of the replacement liquid is too large relative to the flow rate of the waste liquid, which can reduce the symptoms such as blood purification treatment efficiency of a patient. According to the embodiment of the application, whether the liquid flow fault occurs in the blood purification treatment process of the blood purification equipment can be monitored more comprehensively by detecting the ratio between the actual rotating speed of the first peristaltic pump and the actual rotating speed of the second peristaltic pump.
In some embodiments, as shown in fig. 2, the blood purification apparatus further comprises: a shutoff valve 15; the stop valve 15 is arranged on the waste liquid branch 14; the stop valve 15 is used for pinching off or opening the waste liquid branch 14, and when the stop valve 15 pinches off the waste liquid branch 14, the waste liquid branch 14 cannot draw waste liquid from the blood circuit 12; when the stop valve 15 opens the waste liquid branch 14, the waste liquid branch 14 can directly output the waste liquid to the waste liquid bag 10; therefore, the stop valve 15 can control whether the waste liquid branch 14 outputs waste liquid or not, and control the waste liquid output flow of the waste liquid branch 14.
In some embodiments, the method further comprises: step S120 and step S121.
Step S120: the actual weight of the waste bag is obtained.
Step S121: and when the actual weight of the waste liquid bag is larger than or equal to a preset weight limit value, controlling a stop valve on the waste liquid branch to pinch off the waste liquid branch.
Specifically, the preset weight limit value of the waste liquid bag represents the maximum weight of the waste liquid bag which can be borne by the blood purification device, the stop valve is controlled to open the waste liquid branch circuit only when the actual weight of the waste liquid bag is smaller than the preset weight limit value of the waste liquid bag, the second peristaltic pump runs to control the waste liquid branch circuit to output the waste liquid to the waste liquid bag, and the safety of storing the waste liquid by the waste liquid bag is ensured; when the actual weight of the waste liquid bag is greater than or equal to the preset weight limit value of the waste liquid bag, the waste liquid branch is turned off through the stop valve, so that the waste liquid stored in the waste liquid bag is too much, the weight borne by the blood purifying device is too large, the blood purifying device is at a toppling risk, and the waste liquid branch needs to be controlled to stop outputting waste liquid. The preset weight limit value of the waste liquid bag is determined by the physical properties of the blood purifying device (such as the total weight of the blood purifying device and the space occupied by the blood purifying device), for example, the preset weight limit value of the waste liquid bag is 5KG, so the specific method for setting the preset weight limit value of the waste liquid bag will not be discussed in detail herein.
In some embodiments, referring to fig. 2, the blood purification apparatus further comprises: a third peristaltic pump disposed on the blood circuit 12; the third peristaltic pump is a blood pump 8, the flow rate and the flow direction of blood in the blood circuit 12 can be controlled by the rotation of the third peristaltic pump, and the blood of a patient can be purified by the blood purifier 11; when the blood pump 8 is stopped, the blood in the blood circuit 12 is also stopped.
In some embodiments, the method may further comprise: step S122 and step S123.
Step S122: when the actual rotational speed of the first peristaltic pump is 0 and/or the actual rotational speed of the second peristaltic pump is 0, the continuous operation time of the third peristaltic pump on the blood circuit of the blood purifying device is recorded.
Step S123: and when the continuous operation time of the third peristaltic pump is greater than or equal to the third preset continuous time, a seventh fault prompting signal is sent out.
Specifically, when the actual rotation speed of the first peristaltic pump is detected to be 0, the theoretical liquid flow rate of the fluid infusion branch is 0 (here, the theoretical liquid flow rate is 0, but as described above, the replacement liquid in the replacement liquid bag is output to the blood circuit through the fluid infusion branch due to the gravity effect, which belongs to the fault of the fluid infusion branch, possibly because the fluid infusion branch is not installed on the first peristaltic pump correctly); similarly, when the actual rotation speed of the second peristaltic pump is detected to be 0, the theoretical liquid flow of the waste liquid branch is 0; when the third peristaltic pump is operated, it is indicated that blood is flowing in the blood circuit and the patient is undergoing blood purification treatment. When the actual rotation speed of the first peristaltic pump is 0 and/or the actual rotation speed of the second peristaltic pump is 0, it indicates that at least one of the fluid supplementing step of the fluid supplementing branch and the step of outputting the waste liquid from the waste liquid branch is not executed, and because the two steps of the fluid supplementing step and the step of outputting the waste liquid from the waste liquid branch are executed at the same time in the normal blood purifying treatment process, when at least one of the two steps is not executed, it indicates that the blood purifying treatment process is in a fault state, and when the continuous operation time of the third peristaltic pump is greater than or equal to the third preset continuous time, a seventh fault indication signal is sent to indicate to the user that: the blood purification treatment process lacks a fluid replacement step and/or the blood purification treatment process lacks a waste liquid output step; the user can immediately go to the processing fault state after receiving the seventh fault prompt signal, so that the blood purifying equipment is prevented from being in the fault operation state for a long time.
It should be noted that, when the actual rotation speed of the first peristaltic pump is determined to be 0, and/or the actual rotation speed of the second peristaltic pump is determined to be 0, the continuous operation time of the third peristaltic pump is calculated, where the continuous operation time of the third peristaltic pump represents: the blood purification treatment time of the blood purification device in the failure operation state. When the actual rotating speed of the first peristaltic pump is judged to be not 0 and the actual rotating speed of the second peristaltic pump is judged to be not 0, the continuous operation time of the third peristaltic pump is not required to be calculated; meanwhile, the "continuous operation time" herein refers to a continuous time period, and if a time interruption occurs, the recalculation is required next time.
The "third preset continuous time" represents an allowable error time. For example, in the replacement fluid bag replacement step of the fluid replacement branch, the user may replace the replacement fluid bag, which may cause a short interruption in the fluid replacement flow of the fluid replacement branch, which is an allowable error time, and the blood purification treatment process of the patient is still performed during the replacement of the replacement fluid bag. Similarly, when the waste liquid branch outputs waste liquid, the user may replace the waste liquid bag, which may cause a short interruption in the waste liquid output flow of the waste liquid branch, and the short interruption time belongs to the allowable error time, and the blood purification treatment process of the patient is still performed during the replacement of the waste liquid bag.
When the actual rotation speed of the first peristaltic pump is judged to be 0, and/or when the actual rotation speed of the second peristaltic pump is judged to be 0, the continuous operation time of the third peristaltic pump is recorded, and when the continuous operation time of the third peristaltic pump is greater than or equal to the third preset continuous time, the following is stated: the blood purification treatment process lacks a fluid replacement step and/or the blood purification treatment process lacks a waste fluid output step, and the duration of this state exceeds the allowable error time, and the blood purification apparatus is in a malfunction operation state.
Optionally, the third preset continuous time may be set according to multiple clinical experience; for example, the third preset continuous time is 3min, when recording: and when the continuous operation time of the third peristaltic pump is more than or equal to 3min, a seventh fault prompt signal is sent out so as to warn the fault to the user.
In some embodiments, the method may further comprise: step S124.
Step S124: when the actual rotation speed of the first peristaltic pump, the actual rotation speed of the second peristaltic pump and the actual rotation speed of a third peristaltic pump on a blood circuit of the blood purifying device are all different from 0, a first fluctuation curve of the ratio between the actual rotation speed of the third peristaltic pump and the actual rotation speed of the first peristaltic pump along with time and a second fluctuation curve of the ratio between the actual rotation speed of the third peristaltic pump and the actual rotation speed of the second peristaltic pump along with time are drawn and displayed.
Fig. 7 shows a first fluctuation curve of a ratio between an actual rotation speed of the third peristaltic pump and an actual rotation speed of the first peristaltic pump over time, and a second fluctuation curve of a ratio between an actual rotation speed of the third peristaltic pump and an actual rotation speed of the second peristaltic pump over time, wherein the first fluctuation curve represents a relative change condition of a blood flow of the blood circuit and a replacement fluid flow of the fluid-supplementing branch, the second fluctuation curve represents a relative change condition of a blood flow of the blood circuit and a waste fluid flow of the waste fluid branch, a display screen of the blood purifying device can directly display the first fluctuation curve and the second fluctuation curve, and relative fluctuation conditions of the blood flow of the blood circuit, the replacement fluid flow of the fluid-supplementing branch and the waste fluid flow of the waste fluid branch can be judged; under normal blood purification treatment process, the liquid flow in each pipeline can all be in the linkage state of change, the blood flow of blood circuit directly influences blood purification treatment efficiency of blood purification equipment, both replacement liquid flow and the waste liquid flow of waste liquid branch road can receive the influence of the blood flow of blood circuit, for example when the blood flow of blood circuit increases, the replacement liquid flow of waste liquid branch road also can increase, the waste liquid flow of waste liquid branch road also can increase, the actual rotational speed of first peristaltic pump and the actual rotational speed of second peristaltic pump both can receive the coordinated control state of the actual rotational speed of third peristaltic pump. In general, the ratio between the actual rotational speed of the third peristaltic pump and the actual rotational speed of the first peristaltic pump is in a steady state, and the ratio between the actual rotational speed of the third peristaltic pump and the actual rotational speed of the second peristaltic pump is in a steady state (note that the ratio is in a steady state, but not in a steady state, because even if the actual rotational speed of the second peristaltic pump fluctuates, the actual rotational speed of the second peristaltic pump does not necessarily belong to a fault state, the fluctuation state of the actual rotational speed of the second peristaltic pump does not have a reference value), both the first fluctuation curve and the second fluctuation curve only fluctuate within a small range, if the first fluctuation curve and/or the second fluctuation curve have severe fluctuation, it is indicated that an obvious flow failure occurs in the course of the blood purification treatment of the patient, so that a user can intuitively judge whether the first peristaltic pump, the second peristaltic pump and the third peristaltic pump are in a coordinated control state through both the first fluctuation curve and the second fluctuation curve, and further judge whether the flow of the pipeline of the liquid purification device is too large, and whether the abnormal peristaltic movement of the patient has performed the blood purification treatment safely.
The present application further provides a blood purifying device, and it should be noted that the blood purifying device in the embodiment of the present application can implement the fault detection method of the blood purifying device, and for details of related content, please refer to the above method section, and details are not described herein.
The blood purification apparatus includes: a memory and a processor; the memory is used for storing a computer program, and the processor is used for executing the computer program and realizing the fault detection method of the blood purifying device when the computer program is executed. The memory is connected with the processor through a bus.
The processor may be a micro control unit, a central processing unit or a digital signal processor, etc. The memory may be a Flash chip, a read-only memory, a magnetic disk, an optical disk, a U disk, a removable hard disk, or the like.
The present application also provides a computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to implement the failure detection method of the blood purification apparatus as described in any one of the above. For detailed description of the related content, please refer to the related content of the fault detection method of the blood purification device, and the detailed description is omitted herein.
The computer readable storage medium may be an internal storage unit of the above blood purification apparatus, such as a hard disk or a memory. The computer readable storage medium may also be an external storage device such as a equipped plug-in hard disk, smart memory card, secure digital card, flash memory card, etc.
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 any and all possible combinations of one or more of the associated listed items, and includes such combinations.
While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method of detecting a malfunction of a blood purification apparatus, the method comprising:
Acquiring an actual weight reduction rate of a replacement fluid bag on a fluid supplementing branch of the blood purification device;
acquiring the actual rotation speed of a first peristaltic pump on a fluid supplementing branch of the blood purifying device;
and determining whether a liquid supplementing branch of the blood purifying device has faults according to the actual weight reduction rate of the replacement liquid bag, the actual rotating speed of the first peristaltic pump and a first preset corresponding relation between the weight reduction rate of the replacement liquid bag and the rotating speed of the first peristaltic pump.
2. The method of claim 1, wherein determining whether there is a malfunction in the fluid replacement circuit of the blood purification apparatus based on the actual rate of weight reduction of the replacement fluid bag, the actual rotational speed of the first peristaltic pump, and a first preset correspondence between the rate of weight reduction of the replacement fluid bag and the rotational speed of the first peristaltic pump, comprises:
and under the condition that the actual weight reduction rate of the replacement liquid bag and the actual rotating speed of the first peristaltic pump do not accord with the first preset corresponding relation and the duration time of the first preset corresponding relation is larger than or equal to a first preset continuous time, determining that a fault exists in a liquid supplementing branch of the blood purifying device, and sending out first fault prompt information.
3. The method according to claim 1, wherein the method further comprises:
when the actual weight reduction rate of the replacement liquid bag exceeds a preset safety rate range, a second fault prompt message is sent;
and when the actual rotating speed of the first peristaltic pump exceeds a preset safe rotating speed range, sending out third fault prompt information.
4. The method of claim 1, wherein prior to said obtaining the actual weight reduction rate of the replacement fluid bag on the fluid infusion branch of the blood purification apparatus, further comprising:
acquiring a blood flow of a blood circuit of the blood purification device;
when the blood flow of the blood circuit is smaller than or equal to a preset highest safe flow and is larger than or equal to a preset lowest safe flow, the first peristaltic pump is controlled to rotate so as to drive the fluid infusion branch to output the replacement fluid in the replacement fluid bag to the blood circuit;
the method further comprises the steps of:
converting according to the actual weight reduction rate of the replacement liquid bag to obtain the replacement liquid flow of the liquid supplementing branch;
and drawing and displaying a relation curve between the blood flow of the blood circuit and the replacement fluid flow of the fluid infusion branch.
5. The method according to claim 4, wherein the method further comprises:
obtaining the safe residual weight of the replacement liquid bag according to the replacement liquid flow of the liquid supplementing branch;
acquiring the actual weight of the replacement liquid bag;
and when the actual weight of the replacement liquid bag is smaller than or equal to the safe residual weight of the replacement liquid bag, sending out fourth fault prompt information.
6. The method according to claim 1, wherein the method further comprises:
acquiring an actual weight increase rate of a waste liquid bag on a waste liquid branch of the blood purification device;
acquiring the actual rotation speed of a second peristaltic pump on a waste liquid branch of the blood purification device;
and under the condition that the actual weight increase rate of the waste liquid bag, the actual rotating speed of the second peristaltic pump does not accord with a second preset corresponding relation between the weight increase rate of the waste liquid bag and the rotating speed of the second peristaltic pump, and the duration time of the second preset corresponding relation is not more than or equal to a second preset continuous time, determining that a waste liquid branch of the blood purifying device has faults, and sending out fifth fault prompt information.
7. The method of claim 6, wherein the method further comprises:
Determining a ratio between the actual rotational speed of the first peristaltic pump and the actual rotational speed of the second peristaltic pump if neither the actual rotational speed of the first peristaltic pump nor the actual rotational speed of the second peristaltic pump is 0;
when the ratio is not in the preset safety ratio range, a sixth fault prompt message is sent;
the method further comprises the steps of:
recording the continuous running time of a third peristaltic pump on the blood circuit of the blood purifying device when the actual rotation speed of the first peristaltic pump is 0 and/or the actual rotation speed of the second peristaltic pump is 0;
when the continuous operation time of the third peristaltic pump is greater than or equal to a third preset continuous time, a seventh fault prompting signal is sent out;
the method further comprises the steps of:
when the actual rotation speed of the first peristaltic pump, the actual rotation speed of the second peristaltic pump and the actual rotation speed of a third peristaltic pump on a blood circuit of the blood purifying device are all different from 0, a first fluctuation curve of the ratio between the actual rotation speed of the third peristaltic pump and the actual rotation speed of the first peristaltic pump along with time and a second fluctuation curve of the ratio between the actual rotation speed of the third peristaltic pump and the actual rotation speed of the second peristaltic pump along with time are drawn and displayed.
8. The method of claim 6, wherein the method further comprises:
obtaining the actual weight of the waste liquid bag;
and when the actual weight of the waste liquid bag is larger than or equal to a preset weight limit value, controlling a stop valve on the waste liquid branch to pinch off the waste liquid branch.
9. A blood purification apparatus, characterized in that the blood purification apparatus comprises: a memory and a processor; the memory is used for storing a computer program, and the processor is used for executing the computer program and realizing the fault detection method of the blood purifying device according to any one of claims 1-8 when the computer program is executed.
10. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program, which when executed by a processor causes the processor to implement a failure detection method of a blood purification device according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310754460.2A CN117883649A (en) | 2023-06-25 | 2023-06-25 | Failure detection method for blood purification device, and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310754460.2A CN117883649A (en) | 2023-06-25 | 2023-06-25 | Failure detection method for blood purification device, and storage medium |
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| CN202310754460.2A Pending CN117883649A (en) | 2023-06-25 | 2023-06-25 | Failure detection method for blood purification device, and storage medium |
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| CN (1) | CN117883649A (en) |
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