阅读说明：本技术 一种血液净化设备的不间断换液方法 (Uninterrupted liquid changing method of blood purifying equipment ) 是由 高光勇 童锦 李绍林 朱平 李斌 于 2021-07-29 设计创作，主要内容包括：本发明公开了一种血液净化设备的不间断换液方法,通过控制系统读取信息判断是否有液袋挂设在第一称重计上；通过控制系统判断,当达到预设的第一设定值时,控制系统启动换液程序进行换液；通过控制系统判断,当达到预设的第二设定值时,换液完成；在换液过程中实时控制进入患者体内的液体平衡并精确控制单位时间内的净脱水量。本发明有效的保证了治疗过程的连续稳定,避免医护人员同时看护多台设备,而造成处理不及时使体外管路凝血和病人失血的问题。通过本发明实现不中断治疗的情况下实现置换液或废液袋的更换,大大提升治疗的稳定性和安全性,医护人员换液时机不受限制,可大大减轻医护人员负担。(The invention discloses a method for continuously changing liquid for blood purification equipment, which judges whether a liquid bag is hung on a first weighing meter or not by reading information through a control system; judging by the control system, and starting a liquid changing program to change liquid when a preset first set value is reached; judging by a control system, and finishing liquid replacement when a preset second set value is reached; the balance of the liquid entering the body of the patient is controlled in real time during the liquid changing process, and the net dehydration amount in unit time is accurately controlled. The invention effectively ensures the continuity and stability of the treatment process, and avoids the problems of coagulation of the extracorporeal circuit and blood loss of the patient caused by untimely treatment due to the fact that medical care personnel attend a plurality of devices at the same time. The invention realizes the replacement of the replacement liquid or the waste liquid bag under the condition of not interrupting the treatment, greatly improves the stability and the safety of the treatment, has no limit on the liquid replacement time of medical personnel, and can greatly lighten the burden of the medical personnel.)

1. An uninterrupted liquid changing method of blood purifying equipment is characterized by comprising the following steps:

s1: reading information through the control system (1) to judge whether a liquid bag is hung on the first weighing meter (2);

s2: judging by the control system (1), and starting a liquid changing program to change liquid by the control system (1) when a preset first set value is reached;

s3: the control system (1) judges that the liquid is changed when a preset second set value is reached;

s4: the balance of the liquid entering the body of the patient is controlled in real time during the liquid changing process, and the net dehydration amount in unit time is accurately controlled.

2. The method of claim 1, wherein in step S1, the replacement fluid is filled in each of the first fluid bag (6) and the second fluid bag (7), the waste fluid is filled in the third fluid bag (8), and the step of determining whether or not a new fluid bag is hung on the first scale (2) comprises:

setting the first liquid bag (6) with the weight when the bag is full to T0 and the first liquid bag (6) with the weight when the bag is empty to T1 in the control system (1);

the weight of the liquid contained in the second liquid bag (7) is T2, and when the control system (1) reads that the difference value between the real-time weight on the first weighing meter (2) and the T0 is within a set range, the control system judges that a new liquid bag is hung on the first weighing meter (2);

the first liquid bag (6) is connected with the first pump (5), the first pump (5) is connected with the second liquid bag (7) at the same time, the first liquid bag (6) and the second liquid bag (7) are hung on the first weighing meter (2) and the second weighing meter (3) respectively, and the control system (1) is connected with the first weighing meter (2), the second weighing meter (3) and the first pump (5). The third liquid bag (8) is hung on the third weighing meter (4), and the control system (1) is connected with the third weighing meter (4).

3. The method for continuously changing the fluid for the blood purification apparatus according to claim 2, wherein the step of determining whether the first set value is reached at S2 comprises the steps of:

the current weight T3 of the second liquid bag (7) on the second weighing meter (3) is read by the control system (1), when T2-T3> T0, the first set value is reached, and the control system (1) starts a liquid changing program.

4. The method for continuously changing a fluid in a blood purification apparatus according to claim 1, wherein in step S2, the fluid changing process is specifically initiated by controlling the first pump (5) to transfer the fluid in the first fluid bag (6) to the second fluid bag (7).

5. The method for continuously changing the fluid for the blood purification apparatus according to claim 3, wherein the step of determining whether the second set value is reached at S3 comprises the steps of:

when the difference value between the weight of the first liquid bag (6) and the T1 is within a set range, the control system (1) stops the first pump (5), and liquid replacement is completed.

6. The method for continuously changing the liquid of the blood purification apparatus as set forth in claim 5, wherein the specific manner in S4 is: the control system (1) calculates the weight change delta T0 of the sum of the liquid weights on the first weighing meter (2) and the second weighing meter (3) in unit time, calculates the weight change delta T1 of the liquid on the third weighing meter (4) in unit time, and calculates the net dehydration quantity delta T2 of the patient in unit time in the liquid changing process to be delta T1-delta T0.

7. The method for continuously changing the liquid in the blood purification apparatus according to claim 1, wherein in step S1, the first and second liquid bags (6, 7) are used as the waste liquid, the third liquid bag (8) is used as the replacement liquid, and the specific determination step of determining whether or not an empty liquid bag is hung on the first scale (2) is:

the weight T4 and the empty bag weight T5 when the second liquid bag (7) is full are arranged in the control system (1), the first liquid bag (6) is arranged to contain the liquid weight T6 and the empty bag weight T7, and when the control system (1) reads that the difference value between the real-time weight on the first weighing meter (2) and the T7 is within a set range, the empty liquid bag is judged to be hung on the first weighing meter (2);

the first liquid bag (6) is connected with the first pump (5), the first pump (5) is connected with the second liquid bag (7) at the same time, the first liquid bag (6) and the second liquid bag (7) are hung on the first weighing meter (2) and the second weighing meter (3) respectively, and the control system (1) is connected with the first weighing meter (2), the second weighing meter (3) and the first pump (5). The third liquid bag (8) is hung on the third weighing meter (4), and the control system (1) is connected with the third weighing meter (4).

8. The method for changing a liquid in a blood purification apparatus according to claim 7, wherein the step of determining whether the first set value is reached in step S2 comprises the steps of:

the control system (1) reads the real-time weight T8 of the second liquid bag (7) on the second weighing meter (3), when the difference value between T8 and T4 is within a set range, the first set value is reached, the control system (1) starts a liquid changing program, and the first pump (5) is controlled to convey liquid in the second liquid bag (7) to the first liquid bag (6).

9. The method for continuously changing a fluid in a blood purification apparatus according to claim 8, wherein the second set value is determined in S3 in such a manner that the second set value is reached when the difference between the weight of the second fluid bag (7) and T5 is within a set range, and the fluid change of the first pump (5) is stopped by the control system (1).

10. The method for continuously changing a fluid for a blood purification apparatus as claimed in claim 9, wherein the step S4 is embodied by: the control system calculates the weight change delta T3 of the sum of the liquid weights on the first weighing meter (2) and the second weighing meter (3) in unit time, calculates the weight change delta T4 of the liquid on the third weighing meter (4) in unit time, and calculates the net dehydration amount delta T5 of the patient in unit time in the liquid changing process to be delta T3-delta T4.

Technical Field

The invention relates to a liquid changing method, in particular to an uninterrupted liquid changing method of blood purifying equipment.

Background

In the continuous blood purification equipment treatment process, when the replacement fluid is used up or the waste fluid bag is full, the treatment needs to be suspended firstly, a new replacement fluid or waste fluid bag is replaced, the treatment needs to be suspended in the replacement process, the equipment needs to stop the rotation of the replacement fluid pump, the dialysate pump and the waste fluid pump during suspension, the heating of the replacement fluid is stopped, the calcium solution input during anticoagulation of citric acid is stopped, the stop part can be recovered to run after the replacement is completed, the time for heating the replacement fluid to a target value after recovery is long, temperature fluctuation exists in the heating adjustment process and an alarm is triggered, meanwhile, some pressure monitoring can trigger the alarm after recovery, the continuous stability of the treatment process is influenced, medical staff needs to timely handle the replacement fluid, and otherwise, blood coagulation and the like can be caused by suspended treatment, and the blood loss of a patient in vitro can be caused.

The person skilled in the art therefore endeavors to provide an uninterrupted liquid exchange method for a blood purification apparatus that effectively solves the above technical problems.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an uninterrupted liquid exchange method for a blood purification apparatus, which can effectively solve the above-mentioned problems.

In order to achieve the aim, the invention provides an uninterrupted liquid changing method of blood purifying equipment, which comprises the following steps:

s1: reading information through a control system to judge whether a liquid bag is hung on the first weighing meter;

s2: judging by the control system, and starting a liquid changing program to change liquid when a preset first set value is reached;

s3: judging by a control system, and finishing liquid replacement when a preset second set value is reached;

s4: the balance of the liquid entering the body of the patient is controlled in real time during the liquid changing process, and the net dehydration amount in unit time is accurately controlled.

Preferably, in S1, the specific determination step of determining whether or not a new liquid bag is attached to the first scale by filling the first liquid bag and the second liquid bag with the replacement liquid and filling the third liquid bag with the waste liquid includes:

setting the first fluid bag with the weight when the bag is full to T0 and the first fluid bag with the weight when the bag is empty to T1 in the control system;

the weight of the liquid contained in the second liquid bag is T2, and when the control system reads that the difference value between the real-time weight on the first weighing meter and the T0 is within a set range, the control system judges that a new liquid bag is hung on the first weighing meter;

the first liquid bag is connected with the first pump, the first pump is connected with the second liquid bag, the first liquid bag and the second liquid bag are hung on the first weighing meter and the second weighing meter respectively, and the control system is connected with the first weighing meter, the second weighing meter and the first pump. The third liquid bag is hung on a third weighing meter, and the control system is connected with the third weighing meter.

Preferably, in S2, the specific step of determining whether the first set value is reached is:

the current weight T3 of the second liquid bag on the second weighing meter is read by the control system, and when T2-T3> T0, the first set value is reached, and the control system starts a liquid changing program.

Preferably, in S2, the liquid changing procedure is specifically started by controlling the first pump to transfer the liquid in the first liquid bag into the second liquid bag.

Preferably, in S3, the specific step of determining whether the second set value is reached is:

when the difference value between the weight of the first liquid bag and the T1 is within a set range, the first pump is stopped by the control system, and liquid replacement is completed.

Preferably, the specific manner in S4 is: the control system calculates the weight change delta T0 of the sum of the liquid weights on the first weighing meter and the second weighing meter in unit time, calculates the weight change delta T1 of the liquid on the third weighing meter in unit time, and calculates the net dehydration amount delta T2 of the patient in unit time in the liquid changing process to be delta T1-delta T0.

Preferably, in S1, the specific determination step of determining whether or not an empty liquid bag is hung on the first weight scale with the first liquid bag, the second liquid bag and the third liquid bag being waste liquid and the third liquid bag being replacement liquid includes:

the weight T4 and the empty bag weight T5 when the second liquid bag is full are set in the control system, the first liquid bag is set to contain the liquid weight T6 and the empty bag weight T7, and when the control system reads that the difference value between the real-time weight on the first weighing meter and the T7 is within a set range, the empty liquid bag is judged to be hung on the first weighing meter;

the first liquid bag is connected with the first pump, the first pump is connected with the second liquid bag, the first liquid bag and the second liquid bag are hung on the first weighing meter and the second weighing meter respectively, and the control system is connected with the first weighing meter, the second weighing meter and the first pump. The third liquid bag is hung on a third weighing meter, and the control system is connected with the third weighing meter.

Preferably, in S2, the specific steps for determining whether the first set value is reached are as follows:

the control system reads the real-time weight T8 of the second liquid bag on the second weighing meter, when the difference value between T8 and T4 is within a set range, the first set value is reached, the control system starts a liquid changing program, and the first pump is controlled to convey the liquid in the second liquid bag into the first liquid bag.

Preferably, in S3, the second set value is determined such that the second set value is determined to be reached when the difference between the weight of the second fluid bag and the T5 is within the set range, and the control system stops the first pump from changing the fluid.

Preferably, the specific manner in S4 is: the control system calculates the weight change delta T3 of the sum of the liquid weights on the first weighing meter and the second weighing meter in unit time, calculates the weight change delta T4 of the liquid on the third weighing meter in unit time, and calculates the net dehydration amount delta T5 of the patient in unit time in the liquid changing process to be delta T3-delta T4.

The invention has the beneficial effects that: the invention effectively ensures the continuity and stability of the treatment process, and avoids the problems of coagulation of the extracorporeal circuit and blood loss of the patient caused by untimely treatment due to the fact that medical care personnel attend a plurality of devices at the same time. The invention realizes the replacement of the replacement liquid or the waste liquid bag under the condition of not interrupting the treatment, greatly improves the stability and the safety of the treatment, has no limit on the liquid replacement time of medical personnel, and can greatly lighten the burden of the medical personnel.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

in the description of the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. As shown in fig. 1:

example 1

An uninterrupted liquid changing method of blood purifying equipment comprises the following steps:

s1: the control system 1 reads information to judge whether a liquid bag is hung on the first weighing meter 2;

s2: judging by the control system 1, and starting a liquid changing program to change liquid by the control system 1 when a preset first set value is reached;

s3: judging by the control system 1, and finishing liquid replacement when a preset second set value is reached;

s4: the balance of the liquid entering the body of the patient is controlled in real time during the liquid changing process, and the net dehydration amount in unit time is accurately controlled.

In S1, the specific determination steps of installing the replacement liquid in the first liquid bag 6 and the second liquid bag 7, installing the waste liquid in the third liquid bag 8, and determining whether a new liquid bag is hung on the first scale 2 are:

setting the first liquid bag 6 with the weight when the bag is full to T0 and the first liquid bag 6 with the weight when the bag is empty to T1 in the control system 1;

the weight of the liquid contained in the second liquid bag 7 is T2, and when the control system 1 reads that the difference value between the real-time weight on the first weighing meter 2 and the T0 is within a set range, the control system judges that a new liquid bag is hung on the first weighing meter 2;

the first liquid bag 6 is connected with the first pump 5, the first pump 5 is simultaneously connected with the second liquid bag 7, the first liquid bag 6 and the second liquid bag 7 are respectively hung on the first weighing meter 2 and the second weighing meter 3, and the control system 1 is connected with the first weighing meter 2, the second weighing meter 3 and the first pump 5. The third liquid bag 8 is hung on the third weighing meter 4, and the control system 1 is connected with the third weighing meter 4.

In S2, the specific step of determining whether the first setting value is reached is:

the current weight T3 of the second liquid bag 7 on the second weighing meter 3 is read by the control system 1, when T2-T3> T0, the first set value is reached, and the control system 1 starts a liquid changing program.

In S2, the liquid change procedure is specifically started by controlling the first pump 5 to transfer the liquid in the first liquid bag 6 to the second liquid bag 7.

In S3, the specific step of determining whether the second set value is reached is:

when the difference between the weight of the first liquid bag 6 and T1 is within the set range, the first pump 5 is stopped by the control system 1, and the liquid change is completed.

The specific mode in S4 is as follows: the control system 1 calculates the weight change delta T0 of the sum of the liquid weights on the first weight meter 2 and the second weight meter 3 in unit time, calculates the weight change delta T1 of the liquid on the third weight meter 4 in unit time, and calculates the net dehydration amount delta T2 of the patient in unit time in the liquid changing process, which is delta T1-delta T0.

Example 2

An uninterrupted liquid changing method of blood purifying equipment comprises the following steps:

s1: the control system 1 reads information to judge whether a liquid bag is hung on the first weighing meter 2;

s2: judging by the control system 1, and starting a liquid changing program to change liquid by the control system 1 when a preset first set value is reached;

s3: judging by the control system 1, and finishing liquid replacement when a preset second set value is reached;

s4: the balance of the liquid entering the body of the patient is controlled in real time during the liquid changing process, and the net dehydration amount in unit time is accurately controlled.

In S1, the specific determination step of determining whether or not an empty liquid bag is attached to the first scale 2, in which the first liquid bag 6 and the second liquid bag 7 are waste liquids and the third liquid bag 8 is a replacement liquid, is:

the weight T4 and the empty bag weight T5 when the second liquid bag 7 is full are arranged in the control system 1, the first liquid bag 6 is arranged to contain the liquid weight T6 and the empty bag weight T7, and when the control system 1 reads that the difference value between the real-time weight on the first weighing meter 2 and the T7 is within a set range, the empty liquid bag is judged to be hung on the first weighing meter 2;

the first liquid bag 6 is connected with the first pump 5, the first pump 5 is simultaneously connected with the second liquid bag 7, the first liquid bag 6 and the second liquid bag 7 are respectively hung on the first weighing meter 2 and the second weighing meter 3, and the control system 1 is connected with the first weighing meter 2, the second weighing meter 3 and the first pump 5. The third liquid bag 8 is hung on the third weighing meter 4, and the control system 1 is connected with the third weighing meter 4.

In S2, the specific steps for determining whether the first setting value is reached are as follows:

the control system 1 reads the real-time weight T8 of the second liquid bag 7 on the second weighing meter 3, when the difference between T8 and T4 is within the set range, the first set value is reached, the control system 1 starts a liquid changing program, and the first pump 5 is controlled to convey the liquid in the second liquid bag 7 into the first liquid bag 6.

The second set value is determined in such a manner that when the difference between the weight of the second liquid bag 7 and the T5 is within the set range, it can be determined that the second set value is reached, and at this time, the control system 1 stops the first pump 5 from changing the liquid.

The specific mode in S4 is as follows: the control system calculates the weight change delta T3 of the sum of the liquid weights on the first weighing meter 2 and the second weighing meter 3 in unit time, calculates the weight change delta T4 of the liquid on the third weighing meter 4 in unit time, and calculates the net dehydration quantity delta T5 of the patient in unit time in the liquid changing process to be delta T3-delta T4.

The invention effectively solves the problem caused by the suspension of the treatment due to the liquid replacement of the blood purification equipment, and realizes the replacement of the replacement liquid or the waste liquid bag under the condition of not suspending the treatment.

Continuous blood purification treatment is a continuous circulation process of leading the blood of a patient out of the body, comprehensively utilizing the principles of dispersion, convection, adsorption and the like to remove redundant water, toxins and pathogenic factors in the body of the patient, correcting electrolyte imbalance and the like, and then returning the blood to the human body. In the continuous blood purification treatment process, replacement liquid is required to be used for removing harmful substances in the blood of a patient, and the use amount of the replacement liquid is usually 2-6L/h, so that 4L of finished replacement liquid is required to be replaced once in 1-2 hours generally, and a waste second liquid bag 7 with the maximum capacity of 10L is required to be replaced once in about-3 h.

The liquid changing method of the existing continuous blood purifying equipment comprises the following steps: the device is provided with a lower weight limit of the replacement liquid bag and an upper weight limit of the waste liquid bag, when the replacement liquid bag or the waste liquid bag corresponding to the weight meter monitors that the weight exceeds the limit value, an alarm is given to prompt an operator to replace liquid, the operator controls the device to suspend treatment, and the liquid operation device is operated to resume treatment after the replacement.

Continuous blood purification treatment time is more than 24 hours in many times, medical staff need frequently change replacement liquid or waste liquid bag in the treatment process, the traditional method needs to pause treatment when changing liquid, equipment needs to stop a replacement liquid pump, a dialysate pump and a waste liquid pump to rotate when pausing, heating of replacement liquid is stopped, calcium solution input when citric acid is anticoagulated is stopped, the operation of a stop part can be recovered after replacement is finished, the time required for heating the replacement liquid to a target value is long after recovery, temperature fluctuation exists in the heating adjustment process and alarm is triggered, meanwhile, pressure monitoring can trigger alarm after recovery, and continuous stability of the treatment process is influenced. Meanwhile, when the liquid needs to be changed, medical staff need to take care of a plurality of devices in time, and the blood of a patient is possibly lost due to the fact that the external pipelines are coagulated blood when the medical staff do not take care of the devices in time.

The invention can realize the replacement of the replacement liquid or the waste liquid bag under the condition of not interrupting the treatment, greatly improves the stability and the safety of the treatment, has no limit on the liquid replacement time of medical personnel, and can greatly lighten the burden of the medical personnel.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.