A method and device for determining a folding of a catheter and a computer readable storage medium

Abstract

The application discloses a catheter folding judgment method and device and a computer readable storage medium, and relates to the technical field of medical treatment. The impedance value and the change time of the impedance value in the esophagus when a user swallows are collected through an impedance monitoring catheter, wherein the impedance monitoring catheter comprises a plurality of impedance channels arranged in sequence; whether the change times are arranged in sequence according to the sequence of the corresponding impedance channels is judged; if not, it is confirmed that the impedance monitoring catheter is folded. It can be known that the above scheme detects the change time of the impedance value of the impedance channel of the impedance monitoring catheter when the user swallows, compares the sequence of the change time with the sequence of each impedance channel, thereby realizing the judgment of the folding of the impedance monitoring catheter, the X-ray irradiation of the user is not needed to judge whether the catheter is folded, and the radiation of the user is avoided; the operation cost and complexity are reduced, and the operation experience of the user is improved.

Description

Technical Field

[0001] This application relates to the field of medical technology, and in particular to a method, apparatus and computer-readable storage medium for determining catheter kinking. Background Technology

[0002] Gastroesophageal reflux disease (GERD) is a condition in which stomach contents reflux into the esophagus, causing discomfort and / or complications. It is a common disease in Western countries, with an adult incidence rate of 35-40%, and the rate is increasing annually. In my country, the prevalence is approximately 5%. With changes in lifestyle and an aging population due to economic development, the incidence rate is gradually rising. 24-hour esophageal impedance-pH monitoring is the gold standard for detecting GERD. This monitoring requires inserting a thin catheter through the nose into the abdomen. Errors during insertion can cause the catheter to kink; sneezing or pulling during monitoring also increases the chance of kinking. Catheter kinking can lead to data loss at the distal end or even the entire data set, affecting the accuracy of the monitoring results.

[0003] Currently, to determine whether a placed catheter is kinked, an X-ray of the user is required. The X-ray image is then used to determine if the catheter is kinked, which increases operational costs and complexity, and also increases the user's radiation dose.

[0004] In view of the above problems, designing a simple method for determining catheter kinking is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide a method, device, and computer-readable storage medium for determining catheter kinking, thereby reducing the operational cost and complexity of catheter kinking determination.

[0006] To address the aforementioned technical problems, this application provides a method for determining catheter kinking, comprising:

[0007] The impedance value and its change time in the esophagus during swallowing are collected through the impedance channel of the impedance monitoring catheter, wherein the impedance monitoring catheter includes multiple impedance channels arranged in sequence.

[0008] Determine whether each of the aforementioned change times is arranged sequentially according to the corresponding impedance channels;

[0009] If not, then it is confirmed that the impedance monitoring catheter is kinked.

[0010] Preferably, the acquisition of the impedance value and its change time in the esophagus during swallowing via the impedance channel of the impedance monitoring catheter includes:

[0011] The swallowing occurrence time of the impedance channel is obtained; wherein, the swallowing occurrence time is the time when the air in front of the bolus reaches the impedance channel;

[0012] The average impedance value within a preset period prior to the swallowing time is set as the impedance baseline;

[0013] The swallowing entry time and swallowing exit time are obtained based on the impedance baseline; wherein, the swallowing entry time is the time when the bolus reaches the impedance channel, and the swallowing exit time is the time when the bolus exits the impedance channel.

[0014] Preferably, determining whether each of the change times is arranged sequentially according to the corresponding impedance channels includes:

[0015] Determine whether the swallowing entry time corresponding to each impedance channel is arranged sequentially according to the order of the impedance channels;

[0016] If not, proceed to the step of confirming that the impedance monitoring catheter has been kinked.

[0017] Preferably, obtaining the swallowing ingress time and swallowing egress time based on the impedance baseline includes:

[0018] The swallowing time is defined as the time during which the impedance value of the impedance channel is not greater than the product of the impedance baseline and a first percentage.

[0019] The swallowing exit time is defined as the time during which the impedance value of the impedance channel is not less than the product of the impedance baseline and the second percentage.

[0020] Preferably, confirming that the impedance monitoring catheter has kinked includes:

[0021] Record the number of swallowing actions and the number of swallowing samples;

[0022] The swallowing detection rate is obtained based on the number of swallowing actions and the number of swallowing data collections.

[0023] Determine whether the swallowing detection rate is less than a threshold;

[0024] If so, output the kink alarm information of the impedance monitoring conduit.

[0025] Preferably, before acquiring the impedance value and its change time in the esophagus during swallowing via the impedance channel of the impedance monitoring catheter, the procedure further includes:

[0026] Whether swallowing has occurred is determined by using a preset number of impedance channels;

[0027] If so, proceed to the step of collecting the impedance value and its change time in the esophagus during swallowing via the impedance channel of the impedance monitoring catheter.

[0028] Preferably, after confirming that the impedance monitoring catheter has kinked, the method further includes:

[0029] Determine whether the number of times the impedance monitoring catheter has been kinked is greater than a preset number;

[0030] If not, return to the step of determining whether swallowing has occurred by using a preset number of impedance channels;

[0031] If so, output the folding alarm information of the impedance monitoring conduit.

[0032] To address the aforementioned technical problems, this application also provides a catheter kinking detection device, comprising:

[0033] The acquisition module is used to acquire the impedance value and its change time in the esophagus when the user swallows through the impedance channel of the impedance monitoring catheter, wherein the impedance monitoring catheter includes multiple impedance channels arranged in sequence.

[0034] The judgment module is used to determine whether each of the change times is arranged sequentially according to the corresponding impedance channel; if not, the confirmation module is triggered.

[0035] The confirmation module is used to confirm that the impedance monitoring catheter has been kinked.

[0036] To solve the above-mentioned technical problems, this application also provides another catheter kinking detection device, comprising:

[0037] Memory, used to store computer programs;

[0038] A processor is used to implement the steps of the catheter kink determination method described above when executing the computer program.

[0039] To address the aforementioned technical problems, this application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the aforementioned duct folding judgment method.

[0040] The catheter kinking detection method provided in this application collects the impedance values ​​and their change times in the esophagus during swallowing through the impedance channels of an impedance monitoring catheter. The impedance monitoring catheter includes multiple impedance channels arranged sequentially. The method determines whether the change times are arranged sequentially according to the corresponding impedance channels; if not, it confirms that the impedance monitoring catheter has kinked. Therefore, this solution detects catheter kinking by detecting the change times of impedance values ​​in the impedance channels of the impedance monitoring catheter during swallowing and comparing the order of these changes with the order of the impedance channels. This eliminates the need for X-ray exposure, avoiding radiation exposure for the user; it also reduces operational costs and complexity, and improves the user experience.

[0041] In addition, embodiments of this application also provide a catheter kinking detection device and a computer-readable storage medium, with the same effect as above. Attached Figure Description

[0042] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 A flowchart illustrating a method for determining catheter kinking, provided in an embodiment of this application;

[0044] Figure 2 A schematic diagram illustrating the impedance change of a food ball passing through a single impedance channel, as provided in an embodiment of this application.

[0045] Figure 3 A schematic diagram showing the distribution of impedance channels in the impedance monitoring catheter provided in this application embodiment;

[0046] Figure 4 This application provides a time-series diagram showing the impedance values ​​of each impedance channel during swallowing, as illustrated in an embodiment of the present application.

[0047] Figure 5 Another time-series diagram showing the impedance values ​​of each impedance channel during swallowing, provided in an embodiment of this application;

[0048] Figure 6 A schematic diagram of the folded impedance monitoring catheter provided in an embodiment of this application;

[0049] Figure 7 A schematic diagram illustrating the impedance change when a food mass enters and exits a single impedance channel, as provided in an embodiment of this application.

[0050] Figure 8This application provides a flowchart of a method for determining catheter kinking before discharge;

[0051] Figure 9 This is a schematic diagram of a swallowing detection waveform provided in an embodiment of this application;

[0052] Figure 10 This application provides a flowchart of a method for determining catheter kinking after discharge;

[0053] Figure 11 This is a schematic diagram of a catheter kinking detection device provided in an embodiment of this application;

[0054] Figure 12 This is a schematic diagram of another catheter kinking detection device provided in an embodiment of this application. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0056] The core of this application is to provide a method, device, and computer-readable storage medium for determining catheter kinking.

[0057] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] Currently, 24-hour esophageal impedance-pH monitoring is the gold standard for detecting gastroesophageal reflux disease (GERD). This procedure involves inserting a pH monitoring electrode (usually a catheter) into the user's nasal cavity, placing it 5 cm above the lower esophageal sphincter, and connecting it externally to a recorder. It continuously monitors and records changes in esophageal pH and impedance values ​​over 24 hours, providing information on esophageal pH and emptying status. This is an important diagnostic and differential diagnostic method for reflux esophagitis. However, errors during catheter insertion can lead to catheter kinking; sneezing or movement during monitoring also increases the risk of kinking. Catheter kinking can cause data loss at the distal end or even the entire data set, affecting the accuracy of the monitoring results. Therefore, this application provides a method for determining catheter kinking in 24-hour esophageal impedance-pH monitoring. Figure 1 This is a flowchart illustrating a method for determining catheter kinking, provided in an embodiment of this application. Figure 1 As shown, the method includes:

[0059] S10: The impedance value and its change time in the esophagus during swallowing are collected through the impedance channel of the impedance monitoring catheter, wherein the impedance monitoring catheter includes multiple impedance channels arranged in sequence.

[0060] S11: Determine whether each change time is arranged in the order of the corresponding impedance channels; if not, proceed to step S12.

[0061] S12: Confirmation that the impedance monitoring catheter has been bent.

[0062] During 24-hour esophageal impedance-pH monitoring, the impedance channel of the impedance monitoring catheter placed in the user's esophagus determines the nature of the refluxed material by monitoring its impedance value. Within the user's esophageal lumen, the impedance values ​​decrease sequentially for gas, esophageal wall, drinking water, saliva, bile, and gastric contents. Figure 2 This is a schematic diagram illustrating the impedance change of a food mass as it passes through a single impedance channel, as provided in an embodiment of this application. Figure 2 As shown, during the passage of the food bolus through a single impedance channel, the first thing to pass through is a small clump of air in front of the bolus. This small clump of air has a higher impedance value, causing a brief increase in the impedance curve. Subsequently, the food bolus, with a lower impedance value, causes the impedance curve to decrease. The following esophageal peristaltic wave counteracts the pressure generated by the impedance channel, causing the impedance curve to rise slightly again. Finally, the esophageal wall returns to its resting state, and the impedance curve becomes a baseline. It should be noted that swallowing water, bread, or other food into the esophagus can be understood as swallowing the food bolus through the impedance channel, and this is not a limitation in this embodiment.

[0063] Figure 3 This is a schematic diagram showing the distribution of the impedance channels in the impedance monitoring catheter provided in an embodiment of this application. Figure 3 As shown, impedance channels are used to monitor the impedance values ​​of refluxed material and swallowed boluses. An impedance monitoring catheter typically contains multiple impedance channels, arranged sequentially from proximal (in the oral cavity) to distal (in the stomach). Figure 3 As shown in the figure, the impedance monitoring conduit contains six impedance channels for acquiring impedance values, arranged from proximal to distal as Z1, Z2, Z3, Z4, Z5, and Z6. It should be noted that the six impedance channels used for acquiring impedance values ​​in this embodiment are merely a preferred embodiment and do not impose a limitation on the specific number of impedance channels; the exact number depends on the specific implementation.

[0064] Furthermore, when swallowing occurs, the impedance values ​​of each impedance channel change sequentially from proximal to distal according to the timing of the bolus flow, forming a typical temporal swallowing waveform. Figure 4 This is a timing diagram illustrating the impedance changes of various impedance channels during swallowing, provided as an embodiment of this application. Figure 4As shown, based on the changes in impedance values ​​as the food bolus passes through the impedance channels, the time taken for the food bolus to pass through each impedance channel can be obtained from the graph. It can be seen that in the impedance change curves of impedance channels Z1 to Z6, the order of the time taken for the food bolus to pass through each impedance channel is arranged sequentially according to the order of the impedance channels.

[0065] Therefore, to determine whether the impedance monitoring catheter has become kinked, one can check whether the impedance value change time of each food bolus passing through each impedance channel follows the sequential order of the corresponding impedance channel; if the change times do not follow the sequential order of the corresponding impedance channels, then the impedance monitoring catheter should be considered kinked. Specifically, Figure 5 This is another time-series diagram showing the impedance values ​​of each impedance channel during swallowing, provided as an embodiment of this application. Figure 5 As shown, during swallowing, the impedance value of the distal impedance channel Z6 changes earlier than that of the impedance channel Z5, which does not conform to the arrangement order of the impedance channels. In other words, the position of impedance channel Z6 is closer to the proximal end than the position of impedance channel Z5 at this time. Figure 6 This is a schematic diagram of the folded impedance monitoring catheter provided in an embodiment of this application. Figure 6 As shown, at this time, the far-end impedance channel Z6 will respond first with a decrease in impedance value, and the impedance channel Z5 will respond later, forming a disordered swallowing timing change, as shown in the figure. Figure 5 As shown. The impedance value timing changes from Z1 to Z5 are normal, but the timing change of impedance channel Z6 is earlier than that of impedance channel Z5. At this time, the impedance monitoring catheter is bent.

[0066] It is important to note that during the swallowing of a food bolus, the impedance channel exhibits multiple impedance value changes over a period of time. To subsequently determine whether the impedance monitoring catheter is kinked by analyzing the sequence of these changes, a uniform set of change times is required. Therefore, this embodiment does not restrict the method for obtaining the change times; it depends on the specific implementation.

[0067] In this embodiment, the impedance value and its change time in the esophagus during swallowing are collected through the impedance channels of the impedance monitoring catheter. The impedance monitoring catheter includes multiple impedance channels arranged sequentially. It is determined whether the change times are arranged sequentially according to the corresponding impedance channels; if not, the impedance monitoring catheter is confirmed to be kinked. Therefore, the above solution detects kinking of the impedance monitoring catheter by detecting the change time of the impedance value in the impedance channels of the impedance monitoring catheter during swallowing and comparing the order of the change times with the order of the impedance channels. This eliminates the need for X-ray exposure to determine if the catheter is kinked, avoiding radiation exposure for the user; it also reduces operating costs and complexity, and improves the user experience.

[0068] Based on the above embodiments:

[0069] As a preferred embodiment, the impedance value and its change time in the esophagus during swallowing are collected through the impedance channel of the impedance monitoring catheter, including:

[0070] Obtain the swallowing occurrence time of the impedance channel; where the swallowing occurrence time is the time it takes for air to reach the impedance channel before the bolus.

[0071] Set the average impedance value within a preset period before the swallowing time as the impedance baseline;

[0072] The swallowing entry time and swallowing exit time are obtained based on the impedance baseline; where swallowing entry time is the time when the bolus reaches the impedance channel, and swallowing exit time is the time when the bolus exits the impedance channel.

[0073] In the above embodiments, the method of obtaining the change time is not limited and depends on the specific implementation. As a preferred embodiment, the impedance value and its change time in the esophagus during swallowing are collected through the impedance channel of the impedance monitoring catheter. First, it is necessary to obtain the swallowing time of the impedance channel.

[0074] In practical implementation, the definition of swallowing occurrence must first be clarified. As shown in the above embodiments, before the food bolus reaches the impedance channel, a small clump of air in front of the bolus causes a brief increase in the impedance curve, followed by a decrease in impedance. Therefore, in this embodiment, the time when the impedance curve of the impedance channel reaches its highest point due to the small clump of air in front of the bolus is defined as the swallowing occurrence time t0. It should be noted that in order to obtain the swallowing occurrence time t0, an upward threshold and a downward threshold for the impedance curve can be set to determine the change in the impedance curve of the impedance channel caused by the small clump of air at this time, and thus obtain the swallowing occurrence time t0.

[0075] Furthermore, to obtain the impedance value of the esophageal impedance channel before swallowing, it is also necessary to obtain the impedance baseline based on the swallowing time. Specifically, the average impedance value within a preset period before the swallowing time is set as the impedance baseline, representing the average impedance value of the impedance channel before swallowing. In this embodiment, the preset period is not limited and depends on the specific implementation. As a preferred embodiment, the preset period can be 3 seconds, that is, the impedance baseline is the average impedance value within 3 seconds before swallowing.

[0076] As can be understood from the above embodiments, since the passage of the food bolus causes the impedance value of the impedance channel to be lower than the impedance baseline, the swallowing entry time t1 and swallowing exit time t2 can be determined based on the impedance baseline. Here, the swallowing entry time t1 is the time when the food bolus reaches the impedance channel, and the swallowing exit time t2 is the time when the food bolus exits the impedance channel. Figure 7 This is a schematic diagram illustrating the impedance change when a food mass enters and exits a single impedance channel, as provided in an embodiment of this application. Figure 7As shown, when the impedance curve drops from the impedance baseline to a predetermined impedance value, the point of that impedance value is considered the swallowing entry point, and the time is the swallowing entry time t1; when the impedance curve recovers to the predetermined impedance value, the point of that impedance value is considered the swallowing exit point, and the time is the swallowing exit time t2.

[0077] It should be noted that this embodiment does not limit the specific implementation method for obtaining the swallowing entry time and swallowing exit time based on the impedance baseline, and it depends on the specific implementation situation. In addition, since this embodiment obtains the swallowing occurrence time t0, swallowing entry time t1, and swallowing exit time t2 respectively, the change time used to determine whether the impedance monitoring catheter is kinked can be uniformly set as the swallowing occurrence time t0, swallowing entry time t1, or swallowing exit time t2. This is not limited in this embodiment and depends on the specific implementation situation.

[0078] In this embodiment, the swallowing occurrence time of the impedance channel is obtained; wherein the swallowing occurrence time is the time when air before the bolus reaches the impedance channel; the average impedance value within a preset period before the swallowing occurrence time is set as the impedance baseline; the swallowing entry time and swallowing exit time are obtained based on the impedance baseline; wherein the swallowing entry time is the time when the bolus reaches the impedance channel, and the swallowing exit time is the time when the bolus exits the impedance channel. This achieves the acquisition of the impedance value in the esophagus and its change time during swallowing, which is helpful for subsequent determination of whether the impedance monitoring catheter is kinked.

[0079] Based on the above embodiments:

[0080] As a preferred embodiment, determining whether the changing times are arranged sequentially according to the corresponding impedance channels includes:

[0081] Determine whether the swallowing ingress time corresponding to each impedance channel is arranged sequentially according to the impedance channel order;

[0082] If not, proceed to the step of confirming that the impedance monitoring catheter has been kinked.

[0083] It is understood that, through the above embodiments, the swallowing occurrence time t0, swallowing entry time t1, and swallowing exit time t2 of the six impedance channels can be obtained respectively, and a change time can be determined as the basis for judging whether the impedance monitoring catheter is kinked. As a preferred embodiment, it is determined whether each change time is arranged in the order of the corresponding impedance channels, specifically by judging whether the swallowing entry time t1 corresponding to each impedance channel is arranged in the order of the impedance channels.

[0084] In practice, due to the presence of air in front of the food bolus in some cases, determining whether the impedance monitoring catheter is kinked by judging whether the swallowing occurrence time t0 corresponding to each impedance channel is arranged in the order of the impedance channels may be inaccurate. Furthermore, the size of the swallowed food bolus varies, especially for some fluid boluses, where multiple impedance channels may simultaneously lack a swallowing exit point, making it impossible to obtain the swallowing exit time t2. Therefore, to accurately determine whether the impedance monitoring catheter is kinked, this embodiment determines whether the changing times are arranged in the order of the corresponding impedance channels. Specifically, this is achieved by judging whether the swallowing entry time t1 corresponding to each impedance channel is arranged in the order of the impedance channels. It can be understood that the swallowing entry time t1 is the time it takes for the food bolus to reach the impedance channel; therefore, regardless of the type of food bolus, as long as it reaches the impedance channel, the swallowing entry time t1 can be obtained.

[0085] In this embodiment, it is determined whether each change time is arranged in the order of the corresponding impedance channels. Specifically, this is achieved by determining whether the swallowing entry time corresponding to each impedance channel is arranged in the order of the impedance channels, which has the advantage of being more accurate.

[0086] Based on the above embodiments:

[0087] As a preferred embodiment, obtaining the swallowing ingress time and swallowing egress time based on the impedance baseline includes:

[0088] The swallowing time is defined as the time during which the impedance value of the impedance channel is no greater than the product of the impedance baseline and the first percentage.

[0089] The swallowing exit time is defined as the time when the impedance value of the impedance channel is not less than the product of the impedance baseline and the second percentage.

[0090] In the above embodiments, the specific implementation method for obtaining the swallowing entry time and swallowing exit time based on the impedance baseline is not limited, and depends on the specific implementation situation. As a preferred embodiment, the swallowing entry time is defined as the time when the impedance value of the impedance channel is not greater than the product of the impedance baseline and a first percentage; the swallowing exit time is defined as the time when the impedance value of the impedance channel is not less than the product of the impedance baseline and a second percentage.

[0091] In a specific implementation, the swallowing entry point can be set as the position where the impedance value drops by 50% from the impedance baseline, and the time taken to reach this position is recorded as the swallowing entry time; the swallowing exit point can be set as the position where the impedance value recovers to 50% of the impedance baseline, and the time taken to reach this position is recorded as the swallowing exit time. It should be noted that in this embodiment, the magnitudes of the first percentage and the second percentage are not limited, and are determined according to the specific implementation. Similarly, the relationship between the first percentage and the second percentage is not limited, and is determined according to the specific implementation.

[0092] In this embodiment, the swallowing entry time is set to the time when the impedance value of the impedance channel is not greater than the product of the impedance baseline and the first percentage; and the swallowing exit time is set to the time when the impedance value of the impedance channel is not less than the product of the impedance baseline and the second percentage. This achieves the acquisition of the swallowing entry time and the swallowing exit time.

[0093] The description of the catheter kinking judgment method in the above embodiments provides an understanding of the kinking judgment process of the impedance monitoring catheter during 24-hour esophageal impedance-pH monitoring. In this embodiment, a catheter kinking judgment method is provided before discharge, specifically addressing the kinking judgment of the impedance monitoring catheter during the initial setup of 24-hour esophageal impedance-pH monitoring for users in a hospital setting. Figure 8 This application provides a flowchart for a method to determine catheter kinking before discharge. For example... Figure 8 As shown, confirmation of a kink in the impedance monitoring catheter includes:

[0094] S121: Obtain the number of swallowing actions and the number of swallowing samples;

[0095] S122: Obtain the swallowing detection rate based on the number of swallowing actions and the number of swallowing samples;

[0096] S123: Determine if the swallowing detection rate is less than the threshold; if so, proceed to step S124.

[0097] S124: Alarm information for kinking of the output impedance monitoring conduit.

[0098] Understandably, when setting up 24-hour esophageal impedance-pH monitoring for a user, the doctor connects a recorder with an impedance monitoring catheter to a terminal via a connecting cable. The terminal receives data from each impedance channel in real time and detects the waveform of swallowing. As shown in the above embodiment, when determining whether the impedance monitoring catheter of the 24-hour esophageal impedance-pH monitoring device is kinked, the impedance channels of the impedance monitoring catheter are used to collect the impedance values ​​in the esophagus during swallowing and the time of their changes, and it is determined whether the time changes are arranged sequentially according to the corresponding impedance channels. In specific implementation, if the terminal detects that the time changes are arranged sequentially according to the corresponding impedance channels, then the swallowing waveform has been detected.

[0099] After detecting the swallowing waveform, the number of swallowing actions and the number of swallowing samples are obtained. It can be understood that the number of swallowing actions is the number of times the user swallows; while the number of swallowing samples is the number of times the user's swallowing is detected on the terminal. Figure 9 This is a schematic diagram of a swallowing detection waveform provided in an embodiment of this application. Figure 9 As shown, D1 and D2 represent a complete swallowing process. However, the impedance changes in each impedance channel between D1 and D2 are not arranged sequentially. This is because during the two swallows, there is no significant food bolus passing through the user's body; instead, saliva, bile, and stomach contents flow randomly and continuously, causing changes in the impedance values ​​of the impedance channels, and these changes do not occur sequentially. In practice, the user can swallow food multiple times within a predetermined time period, and the swallowing waveform can be detected within that time period.

[0100] After obtaining the number of swallowing actions and the number of swallowing samples, the swallowing detection rate is calculated based on these figures. Specifically, the swallowing detection rate = (number of swallowing samples / number of swallowing actions) × 100%. Further, it is determined whether the swallowing detection rate is less than a threshold. If the swallowing detection rate is greater than the threshold, the impedance monitoring catheter is considered normal, the user's 24-hour esophageal impedance-pH monitoring settings are considered normal, and the user can be discharged. If the swallowing detection rate is less than the threshold, a kinking alarm message for the impedance monitoring catheter is output to allow the doctor to adjust the position of the impedance monitoring catheter.

[0101] It should be noted that this embodiment does not impose a limit on the threshold for the swallowing detection rate; it depends on the specific implementation.

[0102] In this embodiment, the number of swallowing actions and the number of swallowing samples are obtained; the swallowing detection rate is obtained based on the number of swallowing actions and the number of swallowing samples; it is determined whether the swallowing detection rate is less than a threshold; if so, an alarm message for catheter kinking is output. This realizes catheter kinking detection before discharge.

[0103] Understandably, after a user leaves the hospital, they will only carry a recorder with an impedance monitoring catheter inserted to begin data monitoring and data storage. During monitoring, the recorder analyzes the collected real-time data for swallowing assessment. To more accurately determine whether the impedance monitoring catheter has become kinked, this application provides a method for determining catheter kinking after discharge. Figure 10 This application provides a flowchart for a method to determine catheter kinking after discharge. Figure 10 As shown, before acquiring the impedance value and its change time in the esophagus during swallowing via the impedance channel of the impedance monitoring catheter, the following steps are also included:

[0104] S13: Determine whether swallowing has occurred by using a preset number of impedance channels;

[0105] If so, proceed to step S10.

[0106] It is understandable that since the recorder is mainly used for data monitoring and usually does not have the function of displaying swallowing waveforms, it is necessary to determine whether swallowing has occurred before making the determination of catheter kinking in the above embodiment.

[0107] Specifically, the system determines whether swallowing has occurred by using a preset number of impedance channels. If so, it proceeds to step S10, where the impedance values ​​and their change times in the esophagus during swallowing are collected through the impedance channels of the impedance monitoring catheter. It is understood that the method for determining whether swallowing has occurred using a preset number of impedance channels is the same as the method for confirming swallowing in the above embodiment: as the food bolus passes through, the impedance values ​​of each impedance channel change sequentially from proximal to distal according to the time sequence of the food bolus's passage. Taking the determination of whether swallowing has occurred using three impedance channels as an example, if the impedance values ​​of impedance channels Z1 to Z3 change sequentially, swallowing is considered to have occurred. It should be noted that this embodiment does not limit the number of impedance channels used to determine whether swallowing has occurred; it depends on the specific implementation. After confirming swallowing through the preset number of impedance channels, the system proceeds to step S10, where the timing of the impedance value changes during the passage of the food bolus is used to determine whether the catheter is kinked.

[0108] Furthermore, in order to improve the accuracy of catheter kinking detection, such as... Figure 10 As shown, after confirming that the impedance monitoring catheter has been kinked, the following steps are also included:

[0109] S14: Determine whether the number of times the impedance monitoring catheter has been bent is greater than the preset number; if not, return to step S13; if yes, proceed to step S15.

[0110] S15: Alarm information for kinking of the output impedance monitoring conduit.

[0111] Understandably, if a kink is detected in the impedance monitoring catheter, to rule out the influence of other factors and false alarms, it is necessary to determine whether the number of times the impedance monitoring catheter has kinked exceeds a preset number. If not, the process returns to the step of determining whether swallowing has occurred through a preset number of impedance channels to re-determine whether the catheter is kinked. If so, the catheter is confirmed to be kinked, and a kinking alarm message for the impedance monitoring catheter is output to prompt the user to handle the kinking. In this embodiment, there is no limit to the preset number of times; it depends on the specific implementation.

[0112] The catheter kinking detection method has been described in detail in the above embodiments. This application also provides embodiments corresponding to the catheter kinking detection device. It should be noted that this application describes the device embodiments from two perspectives: one is based on the functional modules, and the other is based on the hardware structure.

[0113] Figure 11 This is a schematic diagram of a catheter kinking detection device provided in an embodiment of this application. Figure 11 As shown, the catheter kinking detection device includes:

[0114] The acquisition module 10 is used to acquire the impedance value and its change time in the esophagus when the user swallows through the impedance channel of the impedance monitoring catheter, wherein the impedance monitoring catheter includes multiple impedance channels arranged in sequence.

[0115] The judgment module 11 is used to determine whether each change time is arranged in the order of the corresponding impedance channels; if not, the confirmation module is triggered.

[0116] Confirmation module 12 is used to confirm that the impedance monitoring catheter has been bent.

[0117] In a preferred embodiment, the acquisition module 10 includes:

[0118] The first acquisition module is used to acquire the swallowing time of the impedance channel; wherein, the swallowing time is the time when the air before the bolus reaches the impedance channel.

[0119] The first setting module is used to set the average impedance value within a preset period before the swallowing time as the impedance baseline.

[0120] The second acquisition module is used to acquire the swallowing entry time and swallowing exit time based on the impedance baseline; wherein, the swallowing entry time is the time when the bolus reaches the impedance channel, and the swallowing exit time is the time when the bolus exits the impedance channel.

[0121] In a preferred embodiment, the judgment module 11 is used to determine whether the swallowing entry time corresponding to each impedance channel is arranged in the order of the impedance channels; if not, the confirmation module is triggered.

[0122] In a preferred embodiment, the second acquisition module includes:

[0123] The second setting module is used to set the swallowing entry time as the time during which the impedance value of the impedance channel is no greater than the product of the impedance baseline and the first percentage.

[0124] The third setting module is used to set the swallowing exit time as the time when the impedance value of the impedance channel is not less than the product of the impedance baseline and the second percentage.

[0125] In a preferred embodiment, the confirmation module is used to obtain the number of swallowing actions and the number of swallowing samples; obtain the swallowing detection rate based on the number of swallowing actions and the number of swallowing samples; determine whether the swallowing detection rate is less than a threshold; if so, output an alarm message for kinking of the impedance monitoring catheter.

[0126] As a preferred embodiment, it also includes:

[0127] The swallowing detection module is used to determine whether swallowing has occurred through a preset number of impedance channels; if so, it triggers the acquisition module 10.

[0128] As a preferred embodiment, it also includes:

[0129] The count judgment module is used to determine whether the number of times the impedance monitoring catheter has been bent is greater than the preset number; if not, the swallowing judgment module is triggered; if so, the alarm output module is triggered.

[0130] The alarm output module is used to output alarm information for folding of the impedance monitoring conduit.

[0131] Since the embodiments of the apparatus and the embodiments of the method correspond to each other, please refer to the description of the embodiments of the method for the embodiments of the apparatus, which will not be repeated here.

[0132] Figure 12 This is a schematic diagram of another catheter kinking detection device provided in an embodiment of this application. Figure 12 As shown. The catheter kinking detection device includes:

[0133] Memory 20 is used to store computer programs.

[0134] The processor 21 is used to execute a computer program to implement the steps of the method for determining duct kink as described in the above embodiments.

[0135] The catheter kinking detection device provided in this embodiment may include, but is not limited to, smartphones, tablets, laptops, or desktop computers.

[0136] The processor 21 may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor 21 may be implemented using at least one of the following hardware forms: Digital Signal Processor (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor. The main processor, also known as the Central Processing Unit (CPU), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor 21 may integrate a Graphics Processing Unit (GPU), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, the processor 21 may also include an Artificial Intelligence (AI) processor, which handles computational operations related to machine learning.

[0137] The memory 20 may include one or more computer-readable storage media, which may be non-transitory. The memory 20 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In this embodiment, the memory 20 is used to store at least the following computer program 201, which, after being loaded and executed by the processor 21, is capable of implementing the relevant steps of the conduit folding determination method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202 and data 203, and the storage method may be temporary storage or permanent storage. The operating system 202 may include Windows, Unix, Linux, etc. The data 203 may include, but is not limited to, the data involved in the conduit folding determination method.

[0138] In some embodiments, the catheter kinking detection device may further include a display screen 22, an input / output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.

[0139] Those skilled in the art will understand that Figure 12 The structure shown does not constitute a limitation on the catheter kinking detection device and may include more or fewer components than shown.

[0140] Finally, this application also provides an embodiment corresponding to a computer-readable storage medium. The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps described in the above method embodiments.

[0141] It is understood that if the methods in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and executes all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0142] The foregoing provides a detailed description of a catheter kinking detection method, apparatus, and computer-readable storage medium provided in this application. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0143] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A method for determining catheter kinking, characterized in that, include: The impedance value and its change time in the esophagus during swallowing are collected through the impedance channel of the impedance monitoring catheter, wherein the impedance monitoring catheter includes multiple impedance channels arranged in sequence. Determine whether each of the aforementioned change times is arranged sequentially according to the corresponding impedance channels; If not, then it is confirmed that the impedance monitoring catheter is kinked.

2. The catheter kinking determination method according to claim 1, characterized in that, The impedance value and its change time in the esophagus during swallowing are collected via the impedance channel of the impedance monitoring catheter, including: The swallowing occurrence time of the impedance channel is obtained; wherein, the swallowing occurrence time is the time when the air in front of the bolus reaches the impedance channel; The average impedance value within a preset period prior to the swallowing time is set as the impedance baseline; The swallowing entry time and swallowing exit time are obtained based on the impedance baseline; wherein, the swallowing entry time is the time when the bolus reaches the impedance channel, and the swallowing exit time is the time when the bolus exits the impedance channel.

3. The catheter kinking determination method according to claim 2, characterized in that, The determination of whether each of the change times is arranged sequentially according to the corresponding impedance channels includes: Determine whether the swallowing entry time corresponding to each impedance channel is arranged sequentially according to the order of the impedance channels; If not, proceed to the step of confirming that the impedance monitoring catheter has been kinked.

4. The catheter kinking determination method according to claim 2, characterized in that, The step of obtaining the swallowing initiation time and swallowing exit time based on the impedance baseline includes: The swallowing time is defined as the time during which the impedance value of the impedance channel is not greater than the product of the impedance baseline and a first percentage. The swallowing exit time is defined as the time during which the impedance value of the impedance channel is not less than the product of the impedance baseline and the second percentage.

5. The catheter kinking determination method according to any one of claims 1 to 4, characterized in that, The confirmation that the impedance monitoring catheter has kinked includes: Record the number of swallowing actions and the number of swallowing samples; The swallowing detection rate is obtained based on the number of swallowing actions and the number of swallowing data collections. Determine whether the swallowing detection rate is less than a threshold; If so, output the kink alarm information of the impedance monitoring conduit.

6. The catheter kinking determination method according to claim 2, characterized in that, Before acquiring the impedance value and its change time in the esophagus during swallowing via the impedance channel of the impedance monitoring catheter, the procedure further includes: Whether swallowing has occurred is determined by using a preset number of impedance channels; If so, proceed to the step of collecting the impedance value and its change time in the esophagus during swallowing via the impedance channel of the impedance monitoring catheter.

7. The catheter kinking determination method according to claim 6, characterized in that, After confirming that the impedance monitoring catheter has been kinked, the procedure further includes: Determine whether the number of times the impedance monitoring catheter has been kinked is greater than a preset number; If not, return to the step of determining whether swallowing has occurred by using a preset number of impedance channels; If so, output the folding alarm information of the impedance monitoring conduit.

8. A device for detecting catheter kinking, characterized in that, include: The acquisition module is used to acquire the impedance value and its change time in the esophagus when the user swallows through the impedance channel of the impedance monitoring catheter, wherein the impedance monitoring catheter includes multiple impedance channels arranged in sequence. The judgment module is used to determine whether each of the change times is arranged sequentially according to the corresponding impedance channel; if not, the confirmation module is triggered. The confirmation module is used to confirm that the impedance monitoring catheter has been kinked.

9. A device for detecting catheter kinking, characterized in that, include: Memory, used to store computer programs; A processor, configured to implement the steps of the catheter kinking determination method as described in any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the catheter kinking determination method as described in any one of claims 1 to 7.

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