CN105396200B - Infusion pump and method and device for alarming blockage on infusion pipeline of infusion pump - Google Patents
Infusion pump and method and device for alarming blockage on infusion pipeline of infusion pump Download PDFInfo
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- CN105396200B CN105396200B CN201510898369.3A CN201510898369A CN105396200B CN 105396200 B CN105396200 B CN 105396200B CN 201510898369 A CN201510898369 A CN 201510898369A CN 105396200 B CN105396200 B CN 105396200B
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Abstract
In an infusion pump and an infusion pipeline blockage alarming method and device thereof, after data collected by a pressure sensor on the infusion pump during operation is obtained, whether the data enters a blockage identification area is judged; and after the data is judged to enter the blockage identification area, executing a preset algorithm processing step according to the change condition of the data in the blockage identification area, and carrying out alarm monitoring on the upper blockage based on the data collected by the upper pressure sensor and a set alarm threshold. The blockage identification area indicates that the infusion pipeline of the infusion pump is in a state of upper end blockage. According to the infusion pump and the method and the device for alarming blockage on the infusion pipeline of the infusion pump, the blockage identification area is arranged, and the upper blockage is alarmed and monitored according to the data change condition in the blockage identification area, so that a new upper blockage alarming scheme is provided, and the alarm accuracy of the upper blockage is high.
Description
Technical Field
The application relates to a medical apparatus, in particular to an infusion pump and an alarm method and device for blockage on an infusion pipeline of the infusion pump.
Background
Medical infusion pumps are devices that deliver medical fluids into a patient's body, and require high safety. If the liquid medicine flowing into the upstream of the infusion pump is blocked and the flow is cut off during the infusion process without corresponding operation, the amount of the liquid medicine input into the patient can be reduced, and the serious patient in urgent need of treatment can be in life danger. Therefore, when the upstream is blocked, the infusion pump needs a corresponding detection mechanism and corresponding execution measures.
Please refer to chinese patent publication No. CN 102114279 a, which discloses an infusion pump, which is provided with a pressure sensor at the upstream of the infusion pump, and when an upstream blockage occurs, the infusion pump starts an alarm device, and is accompanied by an audible and visual alarm and performs an operation of stopping the infusion. Thereby avoiding the problem of delaying the treatment of the patient due to the blockage at the upstream of the transfusion tube and improving the safety of the transfusion.
However, for conventional infusion pumps, pressure sensors are used to monitor the pressure in the infusion line in real time. Firstly, a pressure alarm threshold value is set in the infusion pump, after the infusion pump is started, the pressure sensor continuously monitors the infusion pipeline, the infusion pump transmits a detected real-time pressure value to the CPU at any time, the CPU compares the real-time pressure value with the pressure alarm threshold value, if the real-time pressure value is smaller than the pressure alarm threshold value, the infusion pump normally works, and otherwise, the alarm is triggered immediately.
Because the infusion tube is in the normal use in-process, along with the time lapse, the stress of pipeline can be constantly released for pipeline is constantly reduced to pressure sensor's stress, consequently, to this kind of alarm mode, can bring following two problems often: (1) the blocking pressure range at the time of alarm cannot reach the target value. (2) In the normal use process, the blocking pressure alarm can be reported in a false way due to interference, and the use experience of a client is influenced. Meanwhile, for pipelines of different brands, the blocked alarm pressure values are different, so that the risk of misinformation exists when different brands are used simply by detecting the pressure values.
Therefore, in the prior art, the accuracy of the upper occlusion alarm is still to be improved.
Disclosure of Invention
The application provides an infusion pump and an infusion pipeline blockage alarming method and device thereof, and a blockage identification area is arranged, so that the upper blockage is alarmed and monitored according to the data change condition in the blockage identification area, a new upper blockage alarming scheme is provided, and the alarm accuracy of the upper blockage is high.
According to a first aspect of the present application, there is provided a method for alarming an occlusion in a fluid path of an infusion pump, comprising:
acquiring data acquired by a pressure sensor during the operation of the infusion pump;
judging whether the data enters a blocking identification area or not; the blockage identification area indicates that the infusion pipeline of the infusion pump is in a state of upper blockage;
and after judging that the data enters a blockage identification area, carrying out alarm monitoring on the upper blockage according to the change condition of the data in the blockage identification area and a set alarm threshold value.
According to a second aspect of the present application, the present application further provides an alarm device for blocking on a liquid transfer line of an infusion pump, comprising:
the data acquisition module is used for acquiring data acquired by the pressure sensor during the operation of the infusion pump;
a block identification area judgment module for judging whether the data enters a block identification area; the blockage identification area indicates that the infusion pipeline of the infusion pump is in a state of upper blockage;
and the processing module is used for carrying out alarm monitoring on the upper blockage according to the change condition of the data in the blockage identification area and a set alarm threshold value after the blockage identification area judgment module judges that the data enters the blockage identification area.
According to a third aspect of the present application, there is also provided an infusion pump comprising:
the pump body is arranged on the infusion pipeline and used for extruding the infusion pipeline so as to output liquid in the infusion pipeline;
the driving device is connected with the pump body and is used for driving the pump body to extrude the infusion pipeline;
the processor is connected with the driving device and is used for controlling the driving device;
the upper pressure sensor is arranged on the infusion pipeline, is positioned in front of the driving device and is connected with the processor;
any one of the above-mentioned upper blockage alarm devices is connected with the processor and used for alarming and monitoring the upper blockage.
According to the infusion pump and the method and the device for alarming blockage on the infusion pipeline of the infusion pump, after data collected by a pressure sensor during operation of the infusion pump is obtained, whether the data enter a blockage identification area is judged; and after the data is judged to enter the blockage identification area, judging whether the data exceeds a set alarm threshold value according to the change condition of the data in the blockage identification area, thereby carrying out alarm monitoring on the upper blockage. The blockage identification area indicates that the infusion pipeline of the infusion pump is in a state of upper end blockage. According to the infusion pump and the method and the device for alarming blockage on the infusion pipeline of the infusion pump, the blockage identification area is arranged, and the upper blockage is alarmed and monitored according to the data change condition in the blockage identification area, so that a new upper blockage alarming scheme is provided, and the alarm accuracy of the upper blockage is high.
Drawings
FIG. 1 is a schematic view of an infusion pump in one embodiment of the present application;
FIG. 2 is a block diagram of an upper occlusion alarm device in an infusion pump according to an embodiment of the present application;
FIG. 3 is a flow chart illustrating a method for alarm of occlusion on an infusion pump according to an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating the processing steps of a high flow rate algorithm in a method for alarm of an occlusion on an infusion pump according to an embodiment of the present application;
FIG. 5 is a schematic diagram illustrating processing steps of a low flow algorithm in a method for alarm of an occlusion on an infusion pump according to an embodiment of the present application.
Detailed Description
The inventive concept of the present application resides in: in the process of upper blockage alarm monitoring of an infusion pipeline of an infusion pump, the concept of a blockage identification area is provided, so that a new upper blockage alarm scheme with high accuracy is provided, after the data acquired by an upper pressure sensor enters the blockage identification area, a preset algorithm processing step is executed according to the change condition of the data in the blockage identification area, and alarm monitoring is carried out on the upper blockage based on the data acquired by the upper pressure sensor and a set alarm threshold value; and when the data acquired by the upper pressure sensor does not enter the blockage identification area, the data is not processed. The blockage identification area indicates that the infusion pipeline of the infusion pump is in the upper blockage state.
The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments.
Referring to fig. 1, the present embodiment provides an infusion pump, which includes a pump body 101, a driving device 102, a processor 103, an upper pressure sensor 104, and an upper occlusion alarm device 105. The pump body 101 is disposed on the infusion pipeline 100, and is configured to squeeze the infusion pipeline 100 to output the liquid in the infusion pipeline 100. The driving device 102 is connected to the pump body 101, and is configured to drive the pump body 101 to squeeze the infusion pipeline 100. The processor 103 is connected to the driving device 102 for controlling the driving device 102. An upper pressure sensor 104 is disposed on the fluid line 100 in front of the drive unit 102 and is connected to the processor 103. An upper occlusion alarm device 105 is coupled to the processor 103 for alarm monitoring of upper occlusions.
Referring to fig. 2, in the present embodiment, the upper congestion alarm device 105 includes a data obtaining module 201, a congestion identification area determining module 202, an operation mode determining module 204, an alarm threshold adjusting module 205, and a processing module 203.
The data acquisition module 201 is used for acquiring data acquired by the pressure sensor during the operation of the infusion pump.
The blocking identification area judgment module 202 is configured to judge whether the data enters a blocking identification area; the blockage identification area indicates that the infusion pipeline of the infusion pump is in the upper end blockage state.
The processing module 203 is configured to execute a preset algorithm processing step according to a change condition of the data in the blockage identification area after the blockage identification area determining module 202 determines that the data enters the blockage identification area, and alarm and monitor the upper blockage based on the data collected by the upper pressure sensor and a set alarm threshold.
The upper blockage warning device will be further explained below in conjunction with the upper blockage warning method.
Referring to fig. 3, the upper congestion alarm method includes the following steps:
step 1.1: after the infusion pump is operated, the data acquisition module 201 acquires data, which is typically a pressure value acquired by the upper pressure sensor, acquired by the upper pressure sensor during the operation of the infusion pump.
Step 1.2: the operation module judgment module 204 judges the operation mode of the infusion pump, and when the operation mode is judged to be the high-speed operation mode, the high-flow-rate algorithm processing step is executed, namely the step 1.3 is carried out, and alarm monitoring is carried out on the upper blockage based on the data collected by the upper pressure sensor and the set alarm threshold value; and when the low-speed running mode is judged, executing a low-flow-rate algorithm processing step, namely turning to step 1.4, and carrying out alarm monitoring on the upper blockage based on the data acquired by the upper pressure sensor and a set alarm threshold value.
Specifically, the operation module determining module 204 may obtain a flow rate input by a user when determining the operation mode of the infusion pump, so as to determine whether the flow rate is a high flow rate or a low flow rate. For example, if the flow rate greater than 800ml/h is defined as a high flow rate, the operation module determining module 204 determines that the flow rate input by the user is greater than 800ml/h, and determines that the operation mode is the high-speed operation mode, otherwise, determines that the operation mode is the low-speed operation mode. Of course, in other embodiments, the threshold values of the high and low flow rates may be selected according to actual conditions, or other determination methods may be adopted according to actual conditions.
Step 1.3: the processing module 203 executes a high flow algorithm processing step, and performs alarm monitoring on the upper blockage based on the data acquired by the upper pressure sensor and a set alarm threshold. Preferably, in this embodiment, the processing module 203 performs alarm monitoring on the upper blockage based on the data acquired by the upper pressure sensor and the set alarm threshold according to the change condition of the data acquired by the upper pressure sensor in the two blockage identification areas.
Step 1.4: the processing module 203 executes a low flow algorithm processing step and performs alarm monitoring on the upper blockage based on the data collected by the upper pressure sensor and a set alarm threshold. Preferably, in this embodiment, the processing module 203 performs alarm monitoring on the upper blockage based on the data acquired by the upper pressure sensor and the set alarm threshold according to the change condition of the data acquired by the upper pressure sensor in all blockage identification areas.
At present, when the infusion pump operates at a high flow rate, stress is generated on a pipeline due to the high flow rate, and data collected by a pressure sensor fluctuates. For low flow rates, this does not occur and the data collected at low flow rates is smooth. Therefore, during the alarm process of the upper blockage, the upper blockage is easily reported by mistake under the condition of high flow rate. Moreover, for the blockage state under the condition of low flow rate, especially under the full-extrusion mode, the deformation amount of the infusion pipeline is very small and is almost equal to the variation amount of the original stress of the pipeline under extrusion, namely, the blockage state of the low flow rate is almost not different from the normal infusion state, so that the upper blockage state of the low flow rate is very difficult to detect. In order to ensure the accuracy of alarm, the alarm mode in the prior art must consider the conditions of high flow rate and low flow rate respectively, so that the applicable flow rate range is narrow, and the alarm is not accurate enough.
Therefore, in the embodiment, through the step 1.2, the operation mode of the infusion pump is judged firstly, when the operation mode is judged to be the high-speed operation mode, the high-flow-rate algorithm processing step is executed, and the alarm monitoring is carried out on the upper blockage based on the data collected by the upper pressure sensor and the set alarm threshold value; and when the low-speed running mode is judged, executing a low-flow-rate algorithm processing step, and carrying out alarm monitoring on the upper blockage based on the data collected by the upper pressure sensor and a set alarm threshold value. That is, the high-speed operation mode and the low-speed operation mode are treated separately, rather than being treated by the same algorithm. Therefore, the method provides a foundation for the high-flow-rate algorithm processing step to be better adapted to the high-speed operation mode, provides a foundation for the low-flow-rate algorithm processing step to be better adapted to the low-speed operation mode, and designs the corresponding upper blocking alarm algorithm according to the characteristics of the two operation modes respectively, so that the problem that the applicable flow rate range is too narrow due to the fact that the same alarm algorithm processing mode gives consideration to the high-flow-rate condition and the low-flow-rate condition is solved, the wide flow rate detection range of upper blocking alarm is realized, the high-flow-rate operation condition and the low-flow-rate operation condition can be better adapted, and the alarm is more accurate.
Of course, in other embodiments, the upper occlusion alarm monitoring may be performed only for data changes in the occlusion identification region, instead of performing different algorithmic processing for the high flow and low flow operating modes.
Referring to fig. 4, in the present embodiment, the step 1.3 specifically includes:
step 2.1: the blockage identification area judgment module 202 judges whether the data collected by the upper pressure sensor enters the first blockage identification area, and if not, continues to detect; if so, go to step 2.2.
First, it should be noted that, in the process of detecting the upper blocking pressure, when the infusion pipeline is in the upper end blocking state, such as the state of closing the liquid stopping clamp, closing the speed regulator, extruding the pipeline, blocking the filter screen, etc., the upper pressure sensor may acquire the change of data during the movement of the pump blade. The data analysis can know that the data of the upper pressure sensor is different from the data of the normal infusion mode in a certain interval, and the interval is called an occlusion identification area. The first blockage identification area is an area where the stress of the upper blockage pressure sensor is changed due to the first circle of movement of the pump sheet when the infusion pump is in an upper blockage state in the operation process, the second blockage identification area is an area where the pump sheet is detected in the second circle of movement, and the like. Therefore, during the operation of the infusion pump, when the infusion pump is in the upper blockage state, a plurality of blockage identification areas are generated during the continuous movement of the pump sheet.
In addition, entering the occlusion identification zone (occlusion state) does not represent that an alarm occlusion can be triggered, because the manufacturer usually declares the upper occlusion of the infusion pump to be of a certain specification, and a certain target value (alarm threshold) is required to trigger the upper occlusion alarm.
Specifically, whether the occlusion recognition area is entered or not can be judged by performing slope analysis on the data of the upper pressure sensor. The algorithm for slope analysis is as follows: the method comprises the steps of collecting pressure values of a pressure sensor on a pump end in real time, storing the pressure values into a designated array according to the time requirement, comparing data before and after the array, judging whether the values and the duration time reach an algorithm set value according to set algorithm parameters, and if so, considering that the data enter a blockage identification area. Of course, in other embodiments, other manners may be used to determine whether to enter the blocking identification area according to actual situations.
Step 2.2: when the congestion identification area determining module 202 determines that the first congestion identification area is entered, the processing module 203 records data located at the start point of the first congestion identification area as first initial data.
Step 2.3: when the blockage identification area is in the blockage identification area, the processing module 203 acquires data acquired by the upper pressure sensor in real time, calculates a difference value between the real-time data and the first initial data, and processes the difference value to obtain a processed comparison value. Specifically, the difference may be processed by converting the difference into a comparison value for comparison with the alarm threshold through a specific conversion formula.
Step 2.4: the processing module 203 judges whether the comparison value is smaller than the alarm threshold value, if so, the step 2.5 is carried out; if not, an upper blocking alarm is triggered.
Step 2.5: the processing module 203 judges whether the data collected by the upper pressure sensor leaves the first blockage identification area, and if not, the step 2.3 is carried out; if so, step 2.6 is performed.
Step 2.6: when the blockage identification area determining module 202 determines that the data collected by the upper pressure sensor leaves the first blockage identification area, the processing module 203 records a difference value between the data collected by the upper pressure sensor at the endpoint of the first blockage identification area and the first initial data, as a first difference value.
Step 2.7: the blockage identification area judgment module 202 judges whether the data collected by the upper pressure sensor enters the next blockage identification area, if so, the step 2.8 is carried out; if not, the detection is continued.
Step 2.8: when the blockage identification area judgment module 202 judges that the data collected by the upper pressure sensor enters the next blockage identification area, the processing module 203 records the second initial data at the moment.
Step 2.9: when the blockage identification area is in the blockage identification area, the processing module 203 acquires the data collected by the upper pressure sensor in real time and calculates the difference value between the real-time data and the second initial data.
Step 2.10: the processing module 203 adds the difference value to the first difference value to obtain a first accumulated value, and processes the first accumulated value to obtain a processed comparison value. Specifically, the first accumulated value may be processed by converting the first accumulated value into a comparison value for comparison with the alarm threshold value by a specific conversion formula.
Step 2.11: the processing module 203 judges whether the comparison value is smaller than the alarm threshold value, if yes, the step goes to step 2.12; if not, an upper blocking alarm is triggered.
Step 2.12: the blockage identification area judgment module 202 judges whether the data collected by the upper pressure sensor leaves the current blockage identification area, and if so, continues to detect the next blockage identification area; if not, go to step 2.9.
At present, the special consumable infusion pump can only use special consumables, namely, infusion pumps of different manufacturers or models can only use special consumables, the elasticity and the stress change of the special consumables are known in advance, so that the attributes of other pipelines can be not considered when an alarm algorithm is designed, and algorithm development is only carried out on the attributes of the special consumables. However, for the open consumable infusion pump, in the using process, the user can use other open consumables, and for other open consumables, the elasticity and the stress change are different, so that the upper blocking pressure which is usually not agreed by a manufacturer is not met, and a pre-designed upper blocking alarm algorithm cannot be applied to the open consumables.
In order to solve the technical problem, preferably, in this embodiment, the upper blockage warning device 105 further includes a warning threshold adjusting module 205, configured to acquire data collected by the upper pressure sensor after the infusion pipeline is installed and the infusion pump door is closed for a preset time period, and adjust the warning threshold according to the data, where the data collected by the upper pressure sensor reflects the hardness of the infusion pipeline.
Generally, the harder the infusion pipeline is, and in order to ensure the accuracy of the alarm, the alarm threshold value needs to be increased. Therefore, in this embodiment, the purpose of dynamically adjusting the alarm threshold value can be achieved through the alarm threshold value adjusting module 205, and the accuracy of the upper blocking alarm can be ensured regardless of the hardness change of the infusion pipeline or the adaptation to different open consumables, so that the reduction of the accuracy of the upper blocking alarm due to the hardness change of the infusion pipeline is avoided.
Referring to fig. 5, in the present embodiment, the step 1.4 specifically includes:
step 3.1: the blockage identification area judgment module 202 judges whether the data acquired by the upper pressure sensor enters the blockage identification area, and if not, continues to detect; if so, go to step 3.2. .
Step 3.2: when the block identification area judgment module 202 detects that the mobile terminal enters the block identification area, the processing module 203 records data located at the start point of the block identification area as initial data.
Step 3.3: when in the blockage identification area, the processing module 203 acquires the data collected by the upper pressure sensor in real time and calculates the difference between the real-time data and the initial data.
Step 3.4: the processing module 203 processes the sum of the difference and the second accumulated value to obtain a processed comparison value. Specifically, the sum of the difference and the second cumulative value may be processed by converting the sum of the difference and the second cumulative value into a comparison value for comparison with the alarm threshold value by a specific conversion formula. And the second accumulated value is the sum of the differences of the end point of each blockage identification area before the current blockage identification area and the data collected by the pressure sensor at the starting point. When the current congestion identification zone is the first congestion identification zone, the second cumulative value is 0.
Step 3.5: the processing module 203 judges whether the comparison value is smaller than the alarm threshold value, if so, the step goes to step 3.6; if not, an upper blocking alarm is triggered.
Step 3.6: the blockage identification area judgment module 202 judges whether the data collected by the upper pressure sensor leaves the current blockage identification area, if so, the processing module 203 records the difference value between the data collected by the upper pressure sensor and the initial data at the moment for updating the second accumulated value; if not, go to step 3.3.
Step 3.7: the processing module 203 adds the difference value and the second accumulated value as an updated second accumulated value, and then the blockage recognition area determination module 202 continues to detect the next blockage recognition area.
It should be noted that, in this embodiment, in the step 1.3, when the alarm threshold is compared, it is equivalent to add the difference calculated in the current congestion identification area to the first difference after the second congestion identification area, and after the sum is processed, compare the sum with the alarm threshold to determine whether the congestion alarm needs to be triggered. The reason for this is that:
the upper blocking alarm threshold is usually set according to the magnitude of a difference (i.e., a first difference) obtained by counting data of an end point and a start point of the first identification area, that is, the alarm threshold is set with reference to the counted first difference.
In addition, in this embodiment, when the alarm threshold is compared in step 1.3, it is equivalent to only use the sum of the data difference values of two blockage identification areas (the first blockage identification area and the current blockage identification area) to compare with the alarm threshold, because the high flow rate of the liquid may generate fluctuation data in the operation process, if the low flow rate algorithm (step 1.4) is used, the data difference values of the multiple blockage identification areas are accumulated, the stress generated by the fluid fluctuation may be applied to the upper pressure sensor, and the fluctuation interference data may trigger the upper blockage pressure alarm after long-time operation, which affects the accuracy of the upper blockage alarm.
Through research, under the condition of high flow rate, the sum of data difference values of 1-2 blockage identification areas is only needed when the alarm threshold value is reached to trigger the upper blockage alarm, and the sum of data difference values of a plurality of blockage identification areas is not needed unlike the sum of data difference values of a plurality of blockage identification areas needed under the condition of low flow rate. Therefore, in the design of the high flow rate algorithm, in order to avoid false alarm, the characteristic of high flow rate is combined, a method of 2 identification areas is adopted for high flow rate, and after the second blockage identification area, if the alarm cannot be identified, the data of the blockage identification area is rejected, namely the data is considered to be caused by interference.
In the low flow rate algorithm, the accumulated number is not eliminated, and the data of a plurality of blockage identification areas are directly accumulated based on two aspects: (1) the interference of fluctuation data is basically absent in the process of low-flow-rate operation; (2) if the method that only 2 blockage identification areas with high flow rate are adopted, the set alarm threshold value cannot be reached, and therefore accurate blockage alarm cannot be achieved.
Therefore, in the embodiment, the high-speed operation mode and the low-speed operation mode are respectively treated, and the wide flow speed detection range of the upper blocking alarm is realized. And further aiming at the characteristics of high-speed operation and low-speed operation, a corresponding high-flow-rate algorithm and a corresponding low-flow-rate algorithm are designed, so that the algorithm can be better suitable for the high-flow-rate and low-flow-rate operation conditions, and the alarm is more accurate.
Of course, in this embodiment, step 1.3 and step 1.4 are only one preferred mode, and in other embodiments, other implementation manners may be adopted, or appropriate changes may be made on the basis of this embodiment.
For example, in another embodiment, in step 1.3, when the alarm threshold is compared, the difference calculated in the current congestion identification area is added to the first difference and the second difference, and after the obtained sum is processed, the sum is compared with the alarm threshold to determine whether the congestion alarm needs to be triggered. Wherein, the second difference value refers to the difference value of the data of the end point and the starting point of the second blockage identification area.
Similarly, in another embodiment, step 1.4 may also adopt a high flow rate algorithm similar to that in step 1.3 of this embodiment, and in order to minimize the influence of the above-mentioned defects on the alarm accuracy, data of a preset number (e.g. 4) of congestion identification areas may be accumulated and compared with the alarm threshold during the alarm threshold comparison, so as to determine whether an upper congestion alarm needs to be triggered.
Preferably, the upper congestion warning method further comprises the steps of: after the infusion pipeline is installed and the infusion pump door is closed for a preset time period, the alarm threshold value adjusting module 205 acquires data acquired by the upper pressure sensor and adjusts the alarm threshold value according to the data, wherein the data acquired by the upper pressure sensor reflects the hardness degree of the infusion pipeline.
When the pipeline is installed, the upper pressure sensor is stressed to generate data change in the process of closing the infusion pump door. In this embodiment, the pressure value fed back by the upper pressure sensor is determined at the time of pipeline installation, so as to determine the hardness degree of the current infusion pipeline. Specifically, after the infusion pipeline is installed and the infusion pump door is closed, the door on-site switch detects that the door is normally closed, timing is carried out at the moment, and the numerical value of the pressure sensor at the moment is read out after a preset time period. In this embodiment, after the value of the upper pressure sensor is read out, the hardness degree of the current infusion pipeline is determined in a table lookup manner, so that the alarm threshold value is dynamically adjusted.
Preferably, the preset time period can be set to 4-6s, specifically to 5s, and through statistical analysis, the stress of the upper pressure sensor is truest after the infusion pump door is closed for 5s, so that the analysis on the hardness degree of the infusion pipeline is most accurate. In addition, when the hardness degree of the current infusion pipeline is judged in a table look-up mode, data in the table can be obtained through a large number of test data of different infusion pipelines.
Specifically, the table may record a corresponding relationship between the value of the upper pressure sensor and the alarm threshold, and when the value of the upper pressure sensor is obtained, the corresponding alarm threshold is obtained by querying. The corresponding relation among the numerical value of the upper pressure sensor, the hardness of the infusion pipeline and the alarm threshold value can be recorded in the table, when the numerical value of the upper pressure sensor is obtained, the hardness of the corresponding infusion pipeline is inquired firstly, and then the corresponding alarm threshold value is adjusted according to the hardness of the infusion pipeline.
The infusion pump and the method and the device for alarming blockage on the infusion pipeline of the infusion pump can automatically identify the soft and hard degree of the infusion pipeline, so that the infusion pump can automatically adapt to open consumables, and has a wide flow velocity detection range and higher upper blockage alarming accuracy. The infusion pump and the method and the device for alarming blockage on the infusion pipeline thereof are particularly suitable for a semi-extrusion infusion working mode. The semi-extrusion infusion working mode refers to that in the infusion process, the extrusion pump sheet partially extrudes the infusion pipeline, namely, the partial extrusion is not completed, and only half of the pipeline is extruded. The semi-extrusion infusion working mode is beneficial to reducing the loss of the elasticity of the pipeline and achieving the effect of prolonging the service life of the pipeline.
Those skilled in the art will appreciate that all or part of the steps of the methods in the above embodiments may be controlled by a program to be performed by associated hardware, and the program may be stored in a computer-readable storage medium, and the storage medium may include: read-only memory, random access memory, magnetic or optical disk, and the like.
The foregoing is a more detailed description of the present application in connection with specific embodiments thereof, and it is not intended that the present application be limited to the specific embodiments thereof. It will be apparent to those skilled in the art from this disclosure that many more simple derivations or substitutions can be made without departing from the inventive concepts herein.
Claims (23)
1. An infusion pump infusion pipeline blockage alarming method is characterized by comprising the following steps:
acquiring data acquired by a pressure sensor during the operation of the infusion pump;
judging whether the data enters a blocking identification area or not; the blockage identification area indicates that the infusion pipeline of the infusion pump is in a state of upper blockage;
after the data enter a blockage identification area, carrying out alarm monitoring on the upper blockage according to the change condition of the data in the blockage identification area and a set alarm threshold value;
before judging whether the data enter the blockage identification area, the method also comprises the step of judging the operation mode of the infusion pump; when the high-speed running mode is judged, executing a high-flow-rate algorithm processing step, and carrying out alarm monitoring on the upper blockage based on data acquired by the upper pressure sensor and a set alarm threshold value; and when the low-speed running mode is judged, executing a low-flow-rate algorithm processing step, and carrying out alarm monitoring on the upper blockage based on the data collected by the upper pressure sensor and a set alarm threshold value.
2. The method of claim 1, wherein the high flow algorithm processing step comprises: and after the data enter the blockage identification areas, alarming and monitoring the upper blockage based on the data acquired by the upper pressure sensors and a set alarm threshold according to the change condition of the data acquired by the upper pressure sensors in the two blockage identification areas.
3. The method of claim 1, wherein the high flow algorithm processing step comprises:
when the data collected by the upper pressure sensor is judged to enter the first blockage identification area, recording the first initial data at the moment;
acquiring data acquired by an upper pressure sensor in real time during the first blockage identification area, calculating a difference value between the data acquired by the pressure sensor acquired in real time and the first initial data, and processing the difference value to obtain a processed comparison value;
judging whether the comparison value is smaller than an alarm threshold value, if not, triggering an upper blocking alarm; if so, recording a difference value between the data acquired by the upper pressure sensor and the first initial data as a first difference value when the data acquired by the upper pressure sensor leaves the first blockage identification area;
when the data collected by the upper pressure sensor is judged to enter the next blockage identification area, recording the second initial data at the moment;
during the period of being in the blockage identification area, acquiring data acquired by an upper pressure sensor in real time, calculating a difference value between the data acquired by the pressure sensor acquired in real time and the second initial data, adding the difference value and the first difference value to obtain a first accumulated value, and processing the first accumulated value to obtain a processed comparison value;
judging whether the comparison value is smaller than an alarm threshold value, if not, triggering an upper blocking alarm; if so, when the data collected by the upper pressure sensor is judged to leave the current blockage identification area, the next blockage identification area is continuously detected.
4. The method of claim 2, wherein the high flow algorithm processing step comprises:
when the data collected by the upper pressure sensor is judged to enter the first blockage identification area, recording the first initial data at the moment;
acquiring data acquired by an upper pressure sensor in real time during the first blockage identification area, calculating a difference value between the data acquired by the pressure sensor acquired in real time and the first initial data, and processing the difference value to obtain a processed comparison value;
judging whether the comparison value is smaller than an alarm threshold value, if not, triggering an upper blocking alarm; if so, recording a difference value between the data acquired by the upper pressure sensor and the first initial data as a first difference value when the data acquired by the upper pressure sensor leaves the first blockage identification area;
when the data collected by the upper pressure sensor is judged to enter the next blockage identification area, recording the second initial data at the moment;
during the period of being in the blockage identification area, acquiring data acquired by an upper pressure sensor in real time, calculating a difference value between the data acquired by the pressure sensor acquired in real time and the second initial data, adding the difference value and the first difference value to obtain a first accumulated value, and processing the first accumulated value to obtain a processed comparison value;
judging whether the comparison value is smaller than an alarm threshold value, if not, triggering an upper blocking alarm; if so, when the data collected by the upper pressure sensor is judged to leave the current blockage identification area, the next blockage identification area is continuously detected.
5. The method of claim 1, wherein the low flow algorithm processing step comprises: and after the data enter the blockage identification area, alarming and monitoring the upper blockage based on the data acquired by the upper pressure sensor and a set alarm threshold according to the change condition of the data acquired by the upper pressure sensor in all the blockage identification areas.
6. The method of claim 1, wherein the low flow algorithm processing step comprises:
when the data collected by the upper pressure sensor is judged to enter the blockage identification area, recording the initial data at the moment;
acquiring data acquired by an upper pressure sensor in real time during the blockage identification area, calculating a difference value between the data acquired by the pressure sensor acquired in real time and the initial data, and processing the sum of the difference value and a second accumulated value to obtain a processed comparison value; the second accumulated value is the sum of the difference values of the end points of all the blockage identification areas before the current blockage identification area and the data collected by the pressure sensor on the starting point;
judging whether the comparison value is smaller than an alarm threshold value, if not, triggering an upper blocking alarm; if the current accumulated value is larger than the second accumulated value, the difference value between the data collected by the upper pressure sensor and the initial data is recorded for updating the second accumulated value when the data collected by the upper pressure sensor is judged to leave the blockage identification area.
7. The method of claim 5, wherein the low flow algorithm processing step comprises:
when the data collected by the upper pressure sensor is judged to enter the blockage identification area, recording the initial data at the moment;
acquiring data acquired by an upper pressure sensor in real time during the blockage identification area, calculating a difference value between the data acquired by the pressure sensor acquired in real time and the initial data, and processing the sum of the difference value and a second accumulated value to obtain a processed comparison value; the second accumulated value is the sum of the difference values of the end points of all the blockage identification areas before the current blockage identification area and the data collected by the pressure sensor on the starting point;
judging whether the comparison value is smaller than an alarm threshold value, if not, triggering an upper blocking alarm; if so, the mobile terminal can be started,
and when the data collected by the upper pressure sensor is judged to leave the blockage identification area, recording the difference value between the data collected by the upper pressure sensor at the moment and the initial data for updating the second accumulated value.
8. The method according to any one of claims 1 to 7, wherein the step of determining whether the data collected by the upper pressure sensor enters the blockage identification zone is specifically: and carrying out slope analysis on the data acquired by the upper pressure sensor to judge whether the data enters the blockage identification area.
9. The method of any one of claims 1-7, further comprising the step of: after the infusion pipeline is installed and the preset time period of the infusion pump door is closed, the data collected by the upper pressure sensor are obtained, and the alarm threshold value is adjusted according to the data, wherein the data collected by the upper pressure sensor reflects the hardness degree of the infusion pipeline.
10. The method of claim 8, further comprising the step of: after the infusion pipeline is installed and the preset time period of the infusion pump door is closed, the data collected by the upper pressure sensor are obtained, and the alarm threshold value is adjusted according to the data, wherein the data collected by the upper pressure sensor reflects the hardness degree of the infusion pipeline.
11. The method of claim 9, wherein the alarm threshold corresponding to the data is used as the adjusted alarm threshold by looking up a table according to the data collected by the upper pressure sensor after the preset time period of closing the door of the infusion pump after the infusion pipeline is installed, and the preset time period is 4-6 s.
12. The method of claim 10, wherein the alarm threshold corresponding to the data is used as the adjusted alarm threshold by looking up a table according to the data collected by the upper pressure sensor after the preset time period of closing the door of the infusion pump after the infusion pipeline is installed, and the preset time period is 4-6 s.
13. An obstruction alarm device on a liquid conveying pipeline of an infusion pump is characterized by comprising:
the data acquisition module is used for acquiring data acquired by the pressure sensor during the operation of the infusion pump;
a block identification area judgment module for judging whether the data enters a block identification area; the blockage identification area indicates that the infusion pipeline of the infusion pump is in a state of upper blockage;
the processing module is used for carrying out alarm monitoring on the upper blockage according to the change condition of the data in the blockage identification area and a set alarm threshold value after the blockage identification area judgment module judges that the data enters the blockage identification area;
the system also comprises an operation mode judgment module which is used for judging the operation mode of the infusion pump before the blockage identification area judgment module judges whether the data enters the blockage identification area; when the operation mode judgment module judges that the operation mode is a high-speed operation mode, the processing module is used for executing a high-flow algorithm processing step, and alarming and monitoring the upper blockage based on the data acquired by the upper pressure sensor and a set alarm threshold value; and when the operation mode judgment module judges that the operation mode is the low-speed operation mode, the processing module is used for executing the low-flow-rate algorithm processing step and carrying out alarm monitoring on the upper blockage based on the data acquired by the upper pressure sensor and the set alarm threshold value.
14. The apparatus of claim 13, wherein the processing module, when executing the high flow algorithm processing step: and after the blockage identification area judgment module judges that the data enter the blockage identification areas, the processing module is used for carrying out alarm monitoring on the upper blockage according to the change condition of the data collected by the upper pressure sensors in the two blockage identification areas and based on the data collected by the upper pressure sensors and the set alarm threshold value.
15. The apparatus of claim 13, wherein the processing module, when executing the high flow algorithm processing step:
the processing module is used for recording first initial data when the data acquired by the upper pressure sensor enters the first blockage identification area;
when the device is positioned in the blockage identification area, acquiring data acquired by the upper pressure sensor in real time, calculating a difference value between the data acquired by the pressure sensor acquired in real time and the first initial data, and processing the difference value to obtain a processed comparison value;
judging whether the comparison value is smaller than an alarm threshold value, if not, triggering an upper blocking alarm; if so, recording a difference value between the data acquired by the upper pressure sensor and the first initial data as a first difference value when the data acquired by the upper pressure sensor leaves the first blockage identification area;
the processing module is also used for recording second initial data when the data collected by the upper pressure sensor enters the next blockage identification area;
when the mobile terminal is in the blockage identification area, acquiring data acquired by the upper pressure sensor in real time, calculating a difference value between the data acquired by the pressure sensor acquired in real time and the second initial data, adding the difference value and the first difference value to obtain a first accumulated value, and processing the first accumulated value to obtain a processed comparison value;
judging whether the comparison value is smaller than an alarm threshold value, if not, triggering an upper blocking alarm; if so, when the data collected by the upper pressure sensor is judged to leave the current blockage identification area, the next blockage identification area is continuously detected.
16. The apparatus of claim 14, wherein the processing module, when executing the high flow algorithm processing step:
the processing module is used for recording first initial data when the data acquired by the upper pressure sensor enters the first blockage identification area;
when the device is positioned in the blockage identification area, acquiring data acquired by the upper pressure sensor in real time, calculating a difference value between the data acquired by the pressure sensor acquired in real time and the first initial data, and processing the difference value to obtain a processed comparison value;
judging whether the comparison value is smaller than an alarm threshold value, if not, triggering an upper blocking alarm; if so, recording a difference value between the data acquired by the upper pressure sensor and the first initial data as a first difference value when the data acquired by the upper pressure sensor leaves the first blockage identification area;
the processing module is also used for recording second initial data when the data collected by the upper pressure sensor enters the next blockage identification area;
when the mobile terminal is in the blockage identification area, acquiring data acquired by the upper pressure sensor in real time, calculating a difference value between the data acquired by the pressure sensor acquired in real time and the second initial data, adding the difference value and the first difference value to obtain a first accumulated value, and processing the first accumulated value to obtain a processed comparison value;
judging whether the comparison value is smaller than an alarm threshold value, if not, triggering an upper blocking alarm; if so, the mobile terminal can be started,
and when the data collected by the upper pressure sensor is judged to leave the current blockage identification area, continuously detecting the next blockage identification area.
17. The apparatus of claim 13, wherein the processing module, when executing the low flow algorithm processing step: and after the blockage identification area judgment module judges that the data enter the blockage identification area, the processing module is used for carrying out alarm monitoring on the upper blockage according to the change condition of the data collected by the upper pressure sensor in all the blockage identification areas and based on the data collected by the upper pressure sensor and the set alarm threshold value.
18. The apparatus of claim 13, wherein the processing module, when executing the low flow algorithm processing step:
the processing module is used for recording the initial data when judging that the data collected by the upper pressure sensor enters the blockage identification area;
when the device is positioned in the blockage identification area, acquiring data acquired by the upper pressure sensor in real time, calculating a difference value between the data acquired by the pressure sensor acquired in real time and the initial data, and processing the sum of the difference value and the second accumulated value to obtain a processed comparison value; the second accumulated value is the sum of the difference values of the end points of all the blockage identification areas before the current blockage identification area and the data collected by the pressure sensor on the starting point;
judging whether the comparison value is smaller than an alarm threshold value, if not, triggering an upper blocking alarm; if the current accumulated value is larger than the second accumulated value, the difference value between the data collected by the upper pressure sensor and the initial data is recorded for updating the second accumulated value when the data collected by the upper pressure sensor is judged to leave the blockage identification area.
19. The apparatus of claim 17, wherein the processing module, when executing the low flow algorithm processing step:
the processing module is used for recording the initial data when judging that the data collected by the upper pressure sensor enters the blockage identification area;
when the device is positioned in the blockage identification area, acquiring data acquired by the upper pressure sensor in real time, calculating a difference value between the data acquired by the pressure sensor acquired in real time and the initial data, and processing the sum of the difference value and the second accumulated value to obtain a processed comparison value; the second accumulated value is the sum of the difference values of the end points of all the blockage identification areas before the current blockage identification area and the data collected by the pressure sensor on the starting point;
judging whether the comparison value is smaller than an alarm threshold value, if not, triggering an upper blocking alarm; if so, the mobile terminal can be started,
and when the data collected by the upper pressure sensor is judged to leave the blockage identification area, recording the difference value between the data collected by the upper pressure sensor at the moment and the initial data for updating the second accumulated value.
20. The apparatus of claim 13, wherein the blocking identification area determining module is configured to determine whether the data enters a blocking identification area by: and the blockage identification area judgment module is used for carrying out slope analysis on the data acquired by the upper pressure sensor so as to judge whether the data enters the blockage identification area.
21. The device of any one of claims 13-20, further comprising an alarm threshold adjustment module configured to obtain data collected by the upper pressure sensor after a predetermined period of time after the infusion line is installed and the door of the infusion pump is closed, and adjust the alarm threshold based on the data, wherein the data collected by the upper pressure sensor reflects the hardness of the infusion line.
22. The device of claim 21, wherein the alarm threshold adjustment module is configured to use an alarm threshold corresponding to the data obtained by the upper pressure sensor as the adjusted alarm threshold by looking up a table according to the data obtained by the upper pressure sensor after a preset time period of closing the door of the infusion pump after the infusion pipeline is installed, and the preset time period is 4-6 s.
23. An infusion pump, comprising:
the pump body is arranged on the infusion pipeline and used for extruding the infusion pipeline so as to output liquid in the infusion pipeline;
the driving device is connected with the pump body and is used for driving the pump body to extrude the infusion pipeline;
the processor is connected with the driving device and is used for controlling the driving device;
the upper pressure sensor is arranged on the infusion pipeline, is positioned in front of the driving device and is connected with the processor;
an upper occlusion alarm device as in any of claims 13-22 connected to the processor for alarm monitoring of upper occlusions.
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| CN202111223253.1A CN114042204A (en) | 2015-12-08 | 2015-12-08 | Infusion pump and method and device for alarming blockage on infusion pipeline of infusion pump |
| CN201510898369.3A CN105396200B (en) | 2015-12-08 | 2015-12-08 | Infusion pump and method and device for alarming blockage on infusion pipeline of infusion pump |
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| CN106950007B (en) * | 2017-04-28 | 2023-07-21 | 江苏优鼎医疗科技有限公司 | Infusion tube internal pressure detection method and device based on machine vision |
| CN108106794A (en) * | 2018-03-05 | 2018-06-01 | 湖南比扬医疗科技有限公司 | A kind of detection of infusion pump pipe breakage and alarm method and device |
| CN108872477B (en) * | 2018-03-20 | 2020-12-08 | 迈克医疗电子有限公司 | Clot detection method and device, terminal device and medium |
| CN108872475A (en) * | 2018-03-20 | 2018-11-23 | 迈克医疗电子有限公司 | A kind of method, apparatus of clot detection, terminal device and medium |
| CN112654387B (en) * | 2018-07-02 | 2023-08-15 | 米奈特朗尼克斯神经有限公司 | Systems, catheters, and methods for treatment along the central nervous system |
| CN112423805B (en) * | 2018-07-18 | 2023-01-31 | 深圳迈瑞科技有限公司 | Infusion alarm system, method, computer device and storage medium |
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| CN108843975A (en) * | 2018-09-12 | 2018-11-20 | 南京法迈特科技发展有限公司 | Detecting device for pipeline blocking and its detection method based on photoelectric sensor |
| CN110215565A (en) * | 2019-06-20 | 2019-09-10 | 河南驼人医疗器械集团有限公司 | A kind of blocking alarm system and electronic transfusion pump |
| CN112295048A (en) * | 2019-07-26 | 2021-02-02 | 深圳迈瑞科技有限公司 | Infusion pump and suspension control method thereof |
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