Endoscope flushing pump pipe diameter identification method and device and flushing pump

Abstract

The invention discloses an endoscope flushing pump pipe diameter identification method and device and a flushing pump. The method comprises the following steps: continuously acquiring working current data of a pump head motor within a preset acquisition duration according to a preset frequency; and determining the pipe diameter type of the currently used pump pipe according to the distribution characteristics of the working current data. According to the technical scheme provided by the invention, the pipe diameter type is identified based on the working current distribution characteristics, automatic pipe diameter identification without manual operation is realized, the product use convenience is improved, and manual judgment errors can be avoided, so that the requirements of clinical operations can be better met. Compared with the image identification technology, the system does not need to be additionally provided with a camera and matched hardware such as illumination and image processing chips, saves the cost of developing and maintaining a complex image identification algorithm, and greatly reduces the overall cost of the system and the software complexity.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a method, device and flushing pump for identifying the diameter of an endoscope flushing pump. Background Technology

[0002] Currently used endoscopic irrigation pumps are typically available with tubing of various diameters. Under the same driving conditions, using tubing of different diameters will produce different fluid flow rates. Therefore, identifying the tubing diameter is crucial when using an irrigation pump for surgical procedures.

[0003] Currently, the diameter identification of the endoscopic irrigation pump is mainly achieved manually, requiring medical staff to make judgments during operation to adjust the required fluid flow rate appropriately. This is prone to errors due to human negligence and also distracts medical staff, thus affecting surgical efficiency. Summary of the Invention

[0004] This invention provides a method, device, and pump for identifying the diameter of an endoscopic irrigation pump, thereby achieving automatic identification of the pipe diameter and improving the accuracy of the identification results and surgical efficiency.

[0005] In a first aspect, embodiments of the present invention provide a method for identifying the diameter of an endoscope irrigation pump, the method comprising: The pump head motor's operating current data is continuously collected at a preset frequency for a preset collection duration. The pipe diameter type of the pump pipe currently in use is determined based on the distribution characteristics of the operating current data.

[0006] Optionally, determining the pipe diameter type of the pump pipe currently in use based on the distribution characteristics of the operating current data includes: Count the number of data points of the operating current data in each of the multiple preset current ranges; The pipe diameter type is determined based on the number of data points.

[0007] Optionally, the flushing pump has multiple flow rates, each flow rate corresponding to a set of preset current ranges; Accordingly, the step of counting the number of data points of the operating current data within multiple preset current ranges includes: Count the number of data points of the operating current data within a preset current range corresponding to the current operating flow level.

[0008] Optionally, after determining the pipe diameter type of the pump pipe currently in use based on the distribution characteristics of the operating current data, the method further includes: Adjust the speed of the pump head motor according to the pipe diameter type to match the target flushing flow rate.

[0009] Optionally, the flushing pump has multiple flow rates, each corresponding to a target flushing flow rate; Accordingly, adjusting the speed of the pump head motor according to the pipe diameter type to match the target flushing flow rate includes: Adjust the speed of the pump head motor according to the pipe diameter type and the current working flow rate setting to match the target flushing flow rate corresponding to the current working flow rate setting.

[0010] Optionally, before continuously collecting the pump head motor's operating current data at a preset frequency for a preset collection duration, the method further includes: After the flushing pump starts, wait for the preset stabilization time.

[0011] Optionally, the flushing pump has multiple flow rates; Before the preset stabilization time is reached after the flushing pump starts, the following is also included: Determine the target rotation speed based on the target flow rate level selected by the user; The pump head motor is controlled to start at the target speed.

[0012] Optionally, the step of continuously collecting the operating current data of the pump head motor at a preset frequency for a preset collection duration includes: The operating current data is collected by a current sensor connected in series in the power supply circuit of the pump head motor.

[0013] Secondly, embodiments of the present invention also provide an endoscope irrigation pump diameter identification device, the device comprising: The current data acquisition module is used to continuously acquire the operating current data of the pump head motor at a preset frequency for a preset acquisition time. The pipe diameter type determination module is used to determine the pipe diameter type of the pump pipe currently in use based on the distribution characteristics of the operating current data.

[0014] Thirdly, embodiments of the present invention also provide a flushing pump, which includes a controller for executing the endoscope flushing pump diameter identification method provided in any embodiment of the present invention.

[0015] This invention provides a method for identifying the diameter of an endoscopic irrigation pump. First, the operating current data of the pump head motor is continuously collected at a preset frequency for a preset collection time. Then, the diameter type of the pump tube being used is determined based on the distribution characteristics of the obtained operating current data. This method for identifying the diameter of an endoscopic irrigation pump, by identifying the tube type based on the distribution characteristics of the operating current, achieves automatic diameter identification without human intervention, improving the ease of use of the product and avoiding human error, thus better meeting the needs of clinical surgery. Moreover, compared to image recognition technologies, it eliminates the need for additional hardware such as cameras, lighting, and image processing chips, saving the cost of developing and maintaining complex image recognition algorithms, thereby greatly reducing the overall system cost and software complexity. Attached Figure Description

[0016] Figure 1 This is a flowchart of the endoscope flushing pump pipe diameter identification method provided in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the flushing pump structure provided in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the flow test results before and after speed adjustment for different pipe diameter types and flow rate settings, provided in Embodiment 1 of the present invention. Figure 4 This is a schematic diagram of the endoscope flushing pump pipe diameter identification device provided in Embodiment 2 of the present invention. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0018] Before discussing the exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the steps as sequential processes, many of these steps can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the steps can be rearranged. The process can be terminated when its operation is complete, but may also have additional steps not included in the figures. The process can correspond to a method, function, procedure, subroutine, subroutine, etc.

[0019] Example 1 Figure 1This is a flowchart illustrating the endoscopic irrigation pump tubing diameter identification method provided in Embodiment 1 of the present invention. This embodiment is applicable to situations where the diameter of the endoscopic irrigation pump tubing needs to be identified during endoscopic surgical procedures, such as urological stone surgery using a uroscope. This method can be executed by the endoscopic irrigation pump tubing diameter identification device provided in this embodiment of the invention. This device can be implemented in hardware and / or software, and is generally integrated into the irrigation pump controller. Figure 1 As shown, the method specifically includes the following steps: S11. Continuously collect the operating current data of the pump head motor for a preset collection time according to the preset frequency.

[0020] S12. Determine the pipe diameter type of the pump pipe currently in use based on the distribution characteristics of the operating current data.

[0021] Specifically, such as Figure 2 As shown, the flushing pump may include a peristaltic pump head 110 connected to a pump head motor. The pump head motor may be a DC motor, serving as the core power source of the flushing pump. The pump tube is installed in the fixing slot of the peristaltic pump head 110. The flushing fluid can flow in from the pump tube inlet 121 and flow out from the pump tube outlet 122. The pump tube inlet 121 and the pump tube outlet 122 are fixed by a fixing module 130. The fixing module 130 can be adjusted to fix pump tubes of different diameters.

[0022] A pump head motor drives a peristaltic pump head to squeeze the pump tube, generating fluid power. When the pump head squeezes the pump tube under the motor-driven rollers, the deformation resistance and contact area with the pump head differ depending on the diameter of the pump tube, resulting in drastically different loads on the motor. These load changes directly translate into changes in the motor's operating current. Therefore, under the same driving conditions, such as the same motor speed and pump head structure, the dynamic current curves of the pump head motor exhibit significant and distinguishable characteristic patterns when squeezing pump tubes of different diameters.

[0023] The pump head motor's operating current data can then be collected at a preset frequency (e.g., one data point every 10 milliseconds) for a preset collection duration (e.g., 50 seconds) for analysis. The specific duration can be controlled by a timer. Optionally, continuously collecting the pump head motor's operating current data at a preset frequency for a preset collection duration includes: collecting the operating current data using a current sensor connected in series in the power supply circuit of the pump head motor. For example, the current sensor model can be INA219, which can accurately monitor the pump head motor's current value during operation in real time. Furthermore, the distribution characteristics of the collected operating current data can be statistically analyzed during or after the collection process, and compared with the corresponding current distribution characteristics for various pipe diameters to determine the pipe diameter type of the currently used pump pipe. Therefore, by simply adding a current sensor, automatic pipe diameter identification can be achieved at low cost.

[0024] In an optional implementation, determining the pipe diameter type of the pump pipe currently in use based on the distribution characteristics of the operating current data includes: counting the number of data points of the operating current data in multiple preset current ranges; and determining the pipe diameter type based on the number of data points.

[0025] Specifically, commonly used pump tubes typically have specified diameters, allowing for the identification of pump tubes with multiple preset diameters. For example, the system presets three different inner diameter pump tubes: small (2.4mm), medium (4.0mm), and large (6.4mm). For each tube diameter, a preset current range can be set. As shown in the example above, this corresponds to the current ranges for the small, medium, and large tubes, respectively. The specific ranges can be calibrated through extensive prior testing. The number of data points within each preset current range can then be counted, allowing for the differentiation of the tube diameter type based on the concentration of data within each range. Specifically, it can be determined as one of the multiple preset tube diameters.

[0026] Further optionally, the flushing pump has multiple flow rates, each flow rate corresponding to a set of preset current ranges; correspondingly, the step of counting the number of data points of the working current data in the multiple preset current ranges includes: counting the number of data points of the working current data in the set of preset current ranges corresponding to the current working flow rate.

[0027] Specifically, during the use of the flushing pump, users can control the liquid flow rate by selecting different flow levels. With the pipe diameter remaining constant, this can be achieved by adjusting the motor speed. For each flow level, the required preset current range may differ for each pipe diameter; therefore, a set of preset current ranges can be set for each flow level. Furthermore, during pipe diameter identification, a corresponding set of preset current ranges can be determined based on the current operating flow level, and the number of data points within each interval of the collected operating current data can be counted to distinguish the pipe diameter type. For example, the flushing pump has five flow levels, each corresponding to three preset pipe diameters with three preset current ranges. At the first flow level, the three preset current ranges are 600.0~700.0mA, 700.0~1250.0mA, and 1250.0~1680.0mA, respectively.

[0028] Furthermore, when determining the pipe diameter type, the number of data points within each preset current range can be compared with the corresponding threshold value for that range, and the pipe diameter type can be determined based on the comparison results. Moreover, for multiple flow rate levels, the threshold value for each flow rate level can be different. For example, at the first flow rate setting, if there is more than 1 data point in the large tube current range or more than 100 data points in the medium tube current range, the current tube diameter is determined to be large; otherwise, if there are more than 5 data points in the medium tube current range or more than 30 data points in the small tube current range, the current tube diameter is determined to be medium; otherwise, the current tube diameter is determined to be small. At the second flow rate setting, if there is more than 1 data point in the large tube current range or more than 200 data points in the medium tube current range, the current tube diameter is determined to be large; otherwise, if there are more than 5 data points in the medium tube current range or more than 60 data points in the small tube current range, the current tube diameter is determined to be medium; otherwise, the current tube diameter is determined to be small. At the third flow rate setting, if there is more than 1 data point in the large tube current range or more than 250 data points in the medium tube current range, the current tube diameter is determined to be large. If the current pipe diameter is greater than 1, or the current pipe diameter is greater than 400, then the current pipe diameter is greater than 5; otherwise, the current pipe diameter is greater than 190; otherwise, the current pipe diameter is greater than 1000. If the current pipe diameter is greater than 1000, then the current pipe diameter is greater than 1000. Otherwise, the current pipe diameter is greater than 300; otherwise, the current pipe diameter is greater than 1000.

[0029] Based on the above technical solution, optionally, after determining the pipe diameter type of the pump pipe currently in use based on the distribution characteristics of the operating current data, the method further includes: adjusting the rotational speed of the pump head motor according to the pipe diameter type to match the target flushing flow rate.

[0030] Specifically, under the same driving conditions, different pipe diameter types will affect the actual pumped liquid flow rate. Therefore, for each pipe diameter type, different motor speeds need to be used to match the specified target flushing flow rate. After determining the pipe diameter type, the pump head motor speed can be adjusted accordingly to ensure the actual liquid flow rate meets the requirements. Then, after completing the speed adjustment, the pump can enter normal operating mode for use.

[0031] Optionally, the flushing pump has multiple flow rates, each corresponding to a target flushing flow rate; correspondingly, adjusting the speed of the pump head motor according to the pipe diameter type to match the target flushing flow rate includes: adjusting the speed of the pump head motor according to the pipe diameter type and the current working flow rate to match the target flushing flow rate corresponding to the current working flow rate.

[0032] Specifically, with multiple flow rate settings, each flow rate setting corresponds to a target flushing flow rate, and each flow rate setting can correspond to a set of motor speeds for various pipe diameter types. Accordingly, after determining the pipe diameter type, the corresponding target motor speed can be determined based on the pipe diameter type and the current working flow rate setting, and the pump head motor can be controlled to match the target flushing flow rate corresponding to the current working flow rate setting. This achieves adaptive and precise control of the corresponding pipe diameter at different flow rate settings without manual operation. For example, the five target flushing flow rates are 20, 50, 80, 110, and 140 ml / min, the five speed settings for small pipes are 39, 80, 120, 161, and 224 rpm, the five speed settings for medium pipes are 61, 103, 140, 184, and 247 rpm, and the five speed settings for large pipes are 110, 148, 190, 233, and 295 rpm. The flow test results before and after speed adjustment for different pipe diameter types and flow rate settings are shown below. Figure 3 As shown.

[0033] Based on the above technical solution, optionally, before continuously collecting the pump head motor's operating current data at a preset frequency for a preset collection duration, the process further includes: waiting for a preset stabilization period after the flushing pump starts. Specifically, after the flushing pump starts, a preset stabilization period (e.g., 10 seconds) can be waited before proceeding with the pipe diameter identification process to ensure stable motor operation and valid collected operating current data. Specifically, collecting operating current data can begin after waiting for the preset stabilization period and stop after collecting the preset collection duration. The duration can be controlled by a timer.

[0034] Based on the above technical solution, optionally, the flushing pump has multiple flow rates; before waiting for a preset stabilization time after the flushing pump starts, the method further includes: determining a target speed based on the target flow rate selected by the user; and controlling the pump head motor to start at the target speed. Specifically, the user can select a target flow rate and press the motor start / stop button to control the flushing pump to start working. During startup, the speed can be controlled according to the default target speed corresponding to the target flow rate, specifically the speed corresponding to a certain pipe diameter type under the target flow rate.

[0035] The technical solution provided in this invention first continuously collects the operating current data of the pump head motor at a preset frequency for a preset collection time. Then, it determines the pipe diameter type of the pump tube currently in use based on the distribution characteristics of the obtained operating current data. By identifying the pipe diameter type based on the operating current distribution characteristics, automatic pipe diameter identification without human intervention is achieved, improving the convenience of product use and avoiding human judgment errors, thus better meeting the needs of clinical surgery. Moreover, compared with technologies such as image recognition, it eliminates the need for additional hardware such as cameras, lighting, and image processing chips, saving the cost of developing and maintaining complex image recognition algorithms, thereby greatly reducing the overall system cost and software complexity.

[0036] Example 2 Figure 4 This is a schematic diagram of the endoscope irrigation pump diameter identification device provided in Embodiment 2 of the present invention. This device can be implemented in hardware and / or software, and is generally integrated into the irrigation pump controller to execute the endoscope irrigation pump diameter identification method provided in any embodiment of the present invention. Figure 4 As shown, the device includes: The current data acquisition module 21 is used to continuously acquire the operating current data of the pump head motor at a preset frequency for a preset acquisition time. Pipe diameter type determination module 22 is used to determine the pipe diameter type of the pump pipe currently in use based on the distribution characteristics of the operating current data.

[0037] The technical solution provided in this invention first continuously collects the operating current data of the pump head motor at a preset frequency for a preset collection time. Then, it determines the pipe diameter type of the pump tube currently in use based on the distribution characteristics of the obtained operating current data. By identifying the pipe diameter type based on the operating current distribution characteristics, automatic pipe diameter identification without human intervention is achieved, improving the convenience of product use and avoiding human judgment errors, thus better meeting the needs of clinical surgery. Moreover, compared with technologies such as image recognition, it eliminates the need for additional hardware such as cameras, lighting, and image processing chips, saving the cost of developing and maintaining complex image recognition algorithms, thereby greatly reducing the overall system cost and software complexity.

[0038] Based on the above technical solution, optionally, the pipe diameter type determination module 22 is specifically used for: Count the number of data points of the operating current data in each of the multiple preset current ranges; The pipe diameter type is determined based on the number of data points.

[0039] Based on the above technical solution, optionally, the flushing pump has multiple flow rate levels, each flow rate level corresponding to a set of preset current ranges; Correspondingly, the pipe diameter type determination module 22 is specifically used for: Count the number of data points of the operating current data within a preset current range corresponding to the current operating flow level.

[0040] Based on the above technical solution, optionally, the device further includes: The speed adjustment module is used to adjust the speed of the pump head motor according to the pipe diameter type after the pipe diameter type of the pump pipe currently in use is determined based on the distribution characteristics of the operating current data, so as to match the target flushing flow rate.

[0041] Based on the above technical solution, optionally, the flushing pump has multiple flow rate levels, each flow rate level corresponding to a target flushing flow rate; Accordingly, the speed adjustment module is specifically used for: Adjust the speed of the pump head motor according to the pipe diameter type and the current working flow rate setting to match the target flushing flow rate corresponding to the current working flow rate setting.

[0042] Based on the above technical solution, optionally, the device further includes: The waiting module is used to wait for a preset stabilization time after the flushing pump starts before continuously collecting the working current data of the pump head motor at a preset frequency for a preset collection time.

[0043] Based on the above technical solution, optionally, the flushing pump has multiple flow rates; The device also includes: The target speed determination module is used to determine the target speed based on the target flow rate setting selected by the user before waiting for a preset stabilization time after the flushing pump is started. The start control module is used to control the pump head motor to start at the target speed.

[0044] Based on the above technical solution, optionally, the current data acquisition module 21 is specifically used for: The operating current data is collected by a current sensor connected in series in the power supply circuit of the pump head motor.

[0045] The endoscope flushing pump diameter identification device provided in this embodiment of the invention can execute the endoscope flushing pump diameter identification method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0046] It is worth noting that in the above embodiment of the endoscope irrigation pump diameter identification device, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of each functional unit are only for easy differentiation and are not used to limit the scope of protection of the present invention.

[0047] Example 3 Embodiment 3 of the present invention also provides a flushing pump, which includes a controller for executing the endoscopic flushing pump diameter identification method provided in any embodiment of the present invention. The controller can be an STM32 microcontroller, responsible for controlling the entire identification process, such as collecting current data, running the diameter identification algorithm, and finally outputting the identification result to control the motor speed. Specifically, the STM32 acts as the command center, first sending a command to the DC motor drive module to start the motor rotation. After the motor stabilizes, it receives the operating current data collected by the INA219 via the I2C bus, analyzes and processes it, and uses its internal diameter identification algorithm to determine the current pump tube diameter type. Then, based on the identification result and the current flow rate setting, it adjusts the control signal sent to the motor drive module to adjust the speed, thereby achieving precise flow closed-loop control that matches the tube diameter type and flow rate setting, which is beneficial for the smooth progress of the surgery.

[0048] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. An endoscope irrigation pump tubing diameter identification method, characterized by, include: The pump head motor's operating current data is continuously collected at a preset frequency for a preset collection duration. The pipe diameter type of the pump pipe currently in use is determined based on the distribution characteristics of the operating current data.

2. The method for identifying the diameter of an endoscope irrigation pump according to claim 1, characterized in that, The step of determining the pipe diameter type of the pump pipe currently in use based on the distribution characteristics of the operating current data includes: Count the number of data points of the operating current data in each of the multiple preset current ranges; The pipe diameter type is determined based on the number of data points.

3. The method for identifying the diameter of an endoscope irrigation pump according to claim 2, characterized in that, The flushing pump has multiple flow rate settings, each flow rate setting corresponding to a set of preset current ranges; Accordingly, the step of counting the number of data points of the operating current data within multiple preset current ranges includes: Count the number of data points of the operating current data within a preset current range corresponding to the current operating flow level.

4. The method for identifying the diameter of an endoscope irrigation pump according to claim 1, characterized in that, After determining the pipe diameter type of the pump pipe currently in use based on the distribution characteristics of the operating current data, the method further includes: Adjust the speed of the pump head motor according to the pipe diameter type to match the target flushing flow rate.

5. The method for identifying the diameter of an endoscope irrigation pump according to claim 4, characterized in that, The flushing pump has multiple flow rate settings, each corresponding to a target flushing flow rate; Accordingly, adjusting the speed of the pump head motor according to the pipe diameter type to match the target flushing flow rate includes: Adjust the speed of the pump head motor according to the pipe diameter type and the current working flow rate setting to match the target flushing flow rate corresponding to the current working flow rate setting.

6. The method for identifying the diameter of an endoscope irrigation pump according to claim 1, characterized in that, Before continuously collecting the pump head motor's operating current data at a preset frequency for a preset collection duration, the method further includes: After the flushing pump starts, wait for the preset stabilization time.

7. The method for identifying the diameter of an endoscope irrigation pump according to claim 1, characterized in that, The flushing pump has multiple flow rate settings; Before the preset stabilization time is reached after the flushing pump starts, the following is also included: Determine the target rotation speed based on the target flow rate level selected by the user; The pump head motor is controlled to start at the target speed.

8. The method for identifying the diameter of an endoscope irrigation pump according to claim 1, characterized in that, The continuous acquisition of pump head motor operating current data at a preset frequency for a preset acquisition duration includes: The operating current data is collected by a current sensor connected in series in the power supply circuit of the pump head motor.

9. An endoscope irrigation pump pipe diameter identification device, characterized in that, include: The current data acquisition module is used to continuously acquire the operating current data of the pump head motor at a preset frequency for a preset acquisition time. The pipe diameter type determination module is used to determine the pipe diameter type of the pump pipe currently in use based on the distribution characteristics of the operating current data.

10. A flushing pump, characterized in that, The flushing pump includes a controller for performing the endoscope flushing pump diameter identification method as described in any one of claims 1-8.

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