Intelligent metering and clamping device for peritoneal dialysis catheter

Abstract

The application discloses a peritoneal dialysis catheter intelligent metering and clamping device, which comprises a structural shell provided with a catheter embedding groove, and a clamping buckle is arranged on the structural shell at the opening side of the embedding groove; the structural shell is integrated with a clamping execution and flow rate control module, a flow monitoring module and a data processing module; the clamping execution and flow rate control module is used for controlling the filling speed, dosage and on-off of a filling pipe or a drainage catheter; the flow monitoring module is used for monitoring the drainage flow of dialysate in a drainage pipeline; the data processing module is used for controlling the opening and closing of various electrical elements and the conversion of flow data; a power supply unit is used for the power supply of the whole device; the structural shell is provided with a touch module used for controlling the opening and closing and adjustment of the clamping execution and flow rate control module and a display module used for the intuitive display of flow rate and flow data. The application is convenient for operators to carry and has few operation environment restrictions, is suitable for various scenes, meets the effective clamping and drainage metering of patients with poor eyesight, insufficient hand strength and poor self-care ability in the peritoneal dialysis treatment process, and has high practicability.

Description

Technical Field

[0001] This invention relates to an intelligent metering and clamping device for peritoneal dialysis catheters, belonging to the technical field of peritoneal dialysis devices. Background Technology

[0002] Peritoneal dialysis is one of the main renal replacement therapies for patients with end-stage renal disease (uremia). The peritoneal dialysis fluid infused into the peritoneal cavity exchanges solutes and water through the peritoneal semipermeable membrane, removing uremic toxins and correcting water, electrolyte, and acid-base imbalances. Autonomous peritoneal dialysis refers to patients exchanging dialysis fluid at home manually or mechanically to achieve therapeutic goals. Effective catheter clamping, peritoneal dialysis fluid infusion, and recording of ultrafiltration volume are extremely important during dialysis fluid changes, and have a profound impact on the patient's dialysis treatment outcome and overall health.

[0003] The ultrafiltration volume in peritoneal dialysis is crucial: If a patient has no urine output and the ultrafiltration volume is negatively increased during peritoneal dialysis, it will lead to gradual weight gain, increased cardiac load, and heart failure. Furthermore, peritonitis is the most common complication of peritoneal dialysis. In addition to turbid peritoneal dialysis waste fluid, peritonitis also involves a reduction in ultrafiltration volume; early identification of peritonitis is essential for its control. Conversely, excessive ultrafiltration, especially in the early stages of dialysis, can lead to insufficient volume, reduced urine output, and compromised residual renal function. The amount of ultrafiltration largely determines the survival prognosis of peritoneal dialysis patients.

[0004] Peritoneal dialysis fluid increases intra-abdominal pressure after being infused into the abdominal cavity. Clinically, the infusion volume is usually adjusted based on the patient's subjective experience after infusion, i.e., abdominal comfort, in an effort to achieve the treatment goal without causing abdominal discomfort. Abdominal distension, acid reflux, bloating, and chest tightness or shortness of breath are often considered symptoms related to increased intra-abdominal pressure. However, these clinical symptoms are not specific. Due to chronic comorbidities and complications, long-term elevated intra-abdominal pressure may lead to complications caused by mechanical factors, such as hernia, thoracoabdominal fistula, percutaneous catheter leakage, and gastroesophageal reflux, which can increase the risk of enterogenic peritonitis.

[0005] Currently, the accurate method for recording ultrafiltration volume during peritoneal dialysis treatment involves weighing the waste fluid bag after each dialysis session using an electronic scale and subtracting the amount of peritoneal dialysis fluid infused (usually 2L) to calculate the ultrafiltration volume. This is done using existing blue clips to clamp the catheter, weighing the drainage fluid after fluid change, or reading the drainage value using a graduated measuring cup. Other methods, such as using an integrated peritoneal dialysis weighing device, are also employed to measure and record the ultrafiltration volume. However, these methods require dedicated space for the equipment, and the weighing or measuring cup methods are inconvenient to carry, cumbersome, and lack sufficient accuracy. Specifically:

[0006] 1. Cumbersome operation: When using blue clips to clamp the catheter during peritoneal dialysis fluid exchange, patients are required to have good vision and hand-eye coordination to accurately align the catheter into the groove of the blue clip; the ultrafiltration volume is weighed and recorded using an electronic scale or measuring cup, and the steps to obtain the weighing and calculation values ​​are cumbersome and the measurement process is troublesome, especially for patients with lower education levels, older age, poor vision, low self-care ability, or those whose lifestyle changes (such as busy work, travel, etc.).

[0007] 2. Inconvenient to carry: When going out, it is not possible to weigh and record the weight in a timely manner. Integrated weighing scales, electronic scales or measuring cups are inconvenient for patients who are at work or traveling to carry weighing tools.

[0008] 3. Insufficient measurement accuracy: The raw plastic blue clips require a certain amount of hand strength to open and close on the catheter and are easily broken; if the patient's catheter clamping action is slow or not aligned with the blue clip groove, the peritoneal dialysis fluid will be drained into the waste bag, and the peritoneal dialysis fluid treatment volume cannot be accurately infused for dialysis treatment, resulting in an abnormal increase in drainage volume (ultrafiltration volume); in addition, patients with poor vision cannot see clearly, and the data obtained by the electronic scale or measuring cup for ultrafiltration volume is inaccurate.

[0009] Accurately determining the volume of peritoneal dialysis fluid infused into the abdominal cavity during fractionated peritoneal dialysis flushing after catheter placement; controlling the amount of peritoneal dialysis fluid infused each time for patients on regular peritoneal dialysis to effectively reduce complications caused by increased intra-abdominal pressure; facilitating patient use under different fluid exchange conditions; improving patient adherence to long-term ultrafiltration volume measurement and recording; helping physicians make precise adjustments to prescriptions; and enabling early detection of peritonitis, thus providing a more convenient, effective, and accurate way to monitor patients' ultrafiltration volume have become urgent problems to be solved. Summary of the Invention

[0010] The purpose of this invention is to provide a portable intelligent clamping and metering device for peritoneal dialysis catheters, so as to solve the problems of cumbersome catheter clamping and metering operations, inconvenient metering tools, and poor accuracy of infusion and drainage metering in the prior art.

[0011] To achieve the above-mentioned technical objectives and effects, this application provides the following technical solution: A peritoneal dialysis catheter intelligent metering and clamping device includes a structural shell, the structural shell is provided with a catheter insertion groove, and the structural shell on the opening side of the insertion groove is provided with a clamping buckle adapted to clamp peritoneal dialysis fluid of different diameters. The structural shell integrates: The clamping actuator and flow rate control module is used to control the infusion / drainage rate, dosage, and on / off state of the infusion tube or drainage catheter; The flow monitoring module is used to monitor the flow rate of the dialysate in the drainage tubing; The data processing module is electrically connected to the clamping execution and flow rate control module and the flow monitoring module, and is used to control the opening and closing of each electrical component and the conversion of flow data. Power supply unit, used for the overall power supply of the device; The structural housing is equipped with a touch module and a display module that are electrically connected to the data processing module. The touch module is used to control the opening, closing and adjustment of the clamping execution and flow rate control modules, and the display module is used for the intuitive display of flow rate and flow volume data.

[0012] Preferably, the flow monitoring module includes two ultrasonic transducers spaced vertically within the sidewall of the mounting slot, both ultrasonic transducers being signal-connected to the data processing module, and the contact layer between the ultrasonic transducers and the conduit being coated with a coupling agent.

[0013] Preferably, the clamping execution and flow rate control module includes a miniature electric cylinder and a flow-limiting clamp. Two sets of miniature electric cylinders and flow-limiting clamps are provided respectively. The miniature electric cylinder is embedded in the side wall of the mounting groove, and the flow-limiting clamp is fixedly sleeved on the piston rod of the miniature electric cylinder to be close to or away from the conduit. The two flow-limiting clamps are arranged opposite to each other.

[0014] Furthermore, the inner wall of the mounting groove is provided with a limiting groove for embedding the current limiting clamp, which serves as the starting position and fixed position of the current limiting clamp.

[0015] Furthermore, the thickness of the two sides of the current limiting clamp is greater than the thickness of the middle part of the current limiting clamp, and an elastic rubber layer is provided on the side of the current limiting clamp away from the micro electric cylinder.

[0016] Preferably, the inner wall of the mounting groove is also provided with an RGB color sensor for recognizing the color of the peritoneal dialysis fluid during drainage, and the RGB color sensor is signal-connected to the data processing unit.

[0017] Furthermore, the display module is also equipped with an alarm unit, which is electrically connected to the data processing module. When the RGB color sensor detects red, white or purulent color, the data processing module receives the data and feeds it back to the alarm unit, which then issues an alarm signal or alarm sound.

[0018] Preferably, the power supply unit uses a lithium battery, and the structural housing is provided with a USB charging interface that is electrically connected to the power supply unit.

[0019] Preferably, the clamping buckle is a C-type buckle.

[0020] Preferably, the outer shell of the structure is wrapped with a medical-grade silicone layer.

[0021] The intelligent metering and clamping device for peritoneal dialysis catheters provided by this invention has the following advantages: 1. The intelligent metering and clamping device for peritoneal dialysis catheters of the present invention is easy for operators to carry and is not limited by the operating environment. It is suitable for various scenarios and meets the needs of patients with poor vision, insufficient hand strength, and lack of self-care ability. It can effectively clamp and measure drainage during peritoneal dialysis treatment and is highly practical.

[0022] 2. The intelligent metering and clamping device for peritoneal dialysis catheters of the present invention is easy for elderly patients with multiple coexisting diseases to operate, and is intelligent, convenient, accurate and effective in completing daily dialysis treatment and ultrafiltration volume recording.

[0023] 3. The intelligent metering and clamping device for peritoneal dialysis catheters of the present invention enhances patient volume management, can prevent complications such as heart failure, pulmonary edema, and hypertension, and provides support for patients and their families in disease self-management, thereby improving patients' quality of life.

[0024] 4. The intelligent metering and clamping device for peritoneal dialysis catheters of the present invention can help patients identify volume expansion or volume insufficiency in a timely manner, identify the occurrence of peritonitis at an early stage, and improve early intervention. Attached Figure Description

[0025] Figure 1 Axial view of the overall structure of a peritoneal dialysis catheter intelligent metering and clamping device provided in an embodiment of the present invention. Figure 1 ; Figure 2 Axial view of the overall structure of a peritoneal dialysis catheter intelligent metering and clamping device provided in an embodiment of the present invention. Figure 2 ; Figure 3 An exploded view of the overall structure of an intelligent metering and clamping device for peritoneal dialysis catheters provided in an embodiment of the present invention. Figure 1 ; Figure 4 An exploded view of the overall structure of an intelligent metering and clamping device for peritoneal dialysis catheters provided in an embodiment of the present invention. Figure 2 .

[0026] In the picture: 1-Structural housing; 11-Insertion groove; 12-Limiting groove; 2-Silicone layer; 3-Clamping buckle; 4-Clamping execution and flow rate control module; 41-Miniature electric cylinder; 42-Flow limiting clamp; 5-Flow monitoring module; 51-Ultrasonic transducer; 6-Data processing module; 7-Power supply unit; 8-USB charging interface; 9-Elastic rubber layer; 10-Switch button; 13-RGB color sensor; 14-Main switch; 15-Touch module; 16-Display module. Detailed Implementation

[0027] 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 the present invention, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Reference Figure 1 and Figure 2 A smart metering and clamping device for peritoneal dialysis catheters includes a structural housing 1, which is covered by a medical-grade silicone layer 2 for waterproofing and stain resistance. The structural housing 1 has a catheter mounting groove 11 for mounting an infusion or drainage catheter. A clamping buckle 3, adapted to clamp catheters of different dosage forms and diameters of peritoneal dialysis fluid, is installed on the opening side of the structural housing 11. In this embodiment, the clamping buckle 3 is a C-shaped buckle, which is embedded in the inner wall of the mounting groove 11 to improve the stability of catheter clamping.

[0029] Reference Figures 1-4 The housing 1 integrates a clamping execution and flow rate control module 4, a flow monitoring module 5, a data processing module 6, and a power supply unit 7. The clamping execution and flow rate control module 4 controls the infusion / drainage rate, dosage, and on / off state of the infusion or drainage tubing. The flow monitoring module 5 monitors the drainage flow rate of the dialysate in the drainage tubing. The data processing module 6, electrically connected to the clamping execution and flow rate control module 4 and the flow monitoring module 5, controls the on / off state of various electrical components and calculates flow data. The power supply unit 7 provides power to the entire device. In feasible embodiments, the data processing module 6 can be a PLC controller or an MCU control module; in this embodiment, the data processing module 6 is preferably an MCU control module. The power supply unit 7 uses a lithium battery, and the housing 1 is equipped with a USB charging interface 8 electrically connected to the power supply unit 7, enabling long-term use of the device.

[0030] A touch module 15 and a display module 16, electrically connected to the data processing module 6, are mounted on the structural housing 1. The touch module 15 is used to control the opening, closing, and adjustment of the clamping execution and flow rate control module 4, while the display module 16 is used for the intuitive display of flow rate and volume data. In this embodiment, the touch module 15 adopts a concave circular design touch block, based on the collaborative work of capacitive touch sensing technology and the embedded control system; the display module 16 adopts a TFT-LCD screen, OLED screen, or LED display, which are existing technologies and will not be described in detail.

[0031] Reference Figure 1 and Figure 3The clamping execution and flow rate control module 4 includes a miniature electric cylinder 41 and a flow-limiting clamp 42. Two sets of miniature electric cylinders 41 and flow-limiting clamps 42 are installed correspondingly. The miniature electric cylinder 41 is embedded in the side wall of the mounting groove 11, and the flow-limiting clamp 42 is fixedly sleeved on the piston rod of the miniature electric cylinder 41 so as to be driven by the miniature electric cylinder 41 to approach or move away from the conduit. The two flow-limiting clamps 42 are arranged opposite each other, and the thickness of the two sides of the flow-limiting clamp 42 is greater than the thickness of the middle part of the flow-limiting clamp 42. An elastic rubber layer 9 is provided on the side of the flow-limiting clamp 42 away from the miniature electric cylinder 41. Thus, when the flow-limiting clamps 42 approach each other, the two sides of the conduit can be closed first, thereby controlling the flow area and flow rate of the conduit. When it is necessary to close the entire conduit, it is only necessary to make the two flow-limiting clamps 42 fully clamped in place, and the gap in the middle is compensated by the elastic rubber layer 9, thereby achieving the purpose of completely blocking the flow of the conduit. At the same time, the elastic rubber layer 9 can also prevent the flow-limiting clamps 42 from damaging the conduit.

[0032] Furthermore, a limiting groove 12 for embedding the flow limiting clamp 42 is provided on the inner wall of the embedding groove 11. The limiting groove 12 serves as the starting position and fixed position of the flow limiting clamp 42, which can prevent the flow limiting clamp 42 from compressing the conduit when it is not necessary to clamp the conduit.

[0033] Reference Figure 1 The flow monitoring module 5 includes two ultrasonic transducers 51 spaced vertically within the sidewall of the mounting groove 11. Both ultrasonic transducers 51 are signal-connected to the data processing module 6. The two ultrasonic transducers 51 are positioned upstream and downstream of the conduit, responsible for transmitting and receiving ultrasonic signals to and from the outer wall of the conduit, thus converting acoustic energy into electrical signals. The data processing module 6 receives signals from the ultrasonic transducers 51, calculates the time difference between downstream and upstream flow using a built-in algorithm, and then derives the flow velocity and flow rate. The flow rate can also be used to derive the perfusion flow rate of the perfusion fluid or the drainage flow rate of the dialysis fluid, and the results are displayed through the display module 16. The contact layer between the ultrasonic transducers 51 and the conduit is coated with a coupling agent to eliminate air gaps, improve ultrasonic penetration efficiency, and ensure signal strength. In this embodiment, the built-in algorithms adapted to the data processing module 6 and the ultrasonic transducers 51 include a time-difference calculation model, a temperature compensation algorithm, signal filtering processing, AI error correction, and a data self-calibration mechanism.

[0034] The core algorithm is based on the transit-time method. It calculates the average flow velocity and volumetric flow rate of the fluid by accurately measuring the time difference Δt between the downstream and upstream propagation of ultrasonic waves in the fluid, combined with the sound path length and pipe geometry parameters. The basic formula is: V = (L / 2)×(1 / T_c_c - 1 / T_d_c), where L is the sound path, and T_c_c and T_d_c are the propagation times in the forward and reverse directions, respectively. A temperature compensation algorithm corrects sound velocity drift caused by changes in ambient or medium temperature, ensuring accuracy within the range of -30℃ to +160℃. Signal filtering uses digital signal processing (DSP) technology to suppress noise interference and enhance the ability to identify weak signals, making it particularly suitable for low flow rates or high turbidity conditions. AI error correction and data self-calibration mechanisms are optional, introducing machine learning algorithms to intelligently compensate for non-ideal conditions such as installation misalignment, pipe wall scaling, and poor coupling, improving long-term operational reliability. These are all existing technologies and will not be elaborated upon further.

[0035] The intelligent metering and clamping device of this application is installed on the infusion tube when performing peritoneal dialysis fluid infusion and on the drainage tube when performing drainage. A switching button 10 electrically connected to the data processing module 6 is installed on the structural housing 1 to correspond to the corresponding catheter. The display module 16 is also equipped with a storage module to save the infusion volume of the infusion tube and the drainage volume of the drainage tube, respectively.

[0036] Reference Figure 1 An RGB color sensor 13 is also installed on the inner wall of the mounting slot 11 for identifying the color of the peritoneal dialysis fluid during drainage. The RGB color sensor 13 is connected to the data processing unit. The RGB color sensor 13 uses a TCS34725 or TCS3200D, and uses a built-in RGB filter and photodiode array to receive reflected light from the target object. Each channel outputs a digital value proportional to the intensity of red, green, and blue light. After receiving the raw RGB values, the data processing unit performs the following operations: normalizes the data or maps it to a standard color space (e.g., 0–255 range); identifies the specific color using a preset threshold or machine learning model (e.g., if R>200 and G<100 and B<100, it is determined to be "red"); it can combine HSL / HSV color space conversion to improve robustness to brightness changes; the judgment result is output as a control signal to the next level module. The display module 16 also has an alarm unit, which is electrically connected to the data processing module 6. The alarm unit includes an alarm light and an alarm. When the detected drainage amount does not exceed the preset value, it indicates that the ultrafiltration volume is low or negative, and the display module 16 issues an alarm signal or alarm sound; when the RGB color sensor 13 detects red, white or purulent color, the data processing module 6 receives the data and feeds it back to the alarm unit to indicate peritonitis or fibrin sheath, and the alarm unit issues an alarm signal or alarm sound, thereby improving the accuracy, specificity and reliability of ultrafiltration volume measurement during peritoneal dialysis treatment.

[0037] Simultaneously, the data processing module 6 can also incorporate a wireless communication module, such as the ESP8266 (Wi-Fi) or HC-05 (Bluetooth) peripheral module. This allows for data transmission via Gizwits, custom TCP / UDP, or Bluetooth serial protocols. The data processing module 6 collects abnormal data and sends it to the ESP8266 (or Bluetooth module) via UART. The ESP8266 encapsulates the data in Gizwits protocol format and uploads it to the cloud. Users can subscribe to device data and receive real-time anomaly notifications via a mobile app (with the Gizwits App installed). This enables timely detection of home alarm frequency, alarm causes, and corresponding alarm data, alerting patients to seek medical attention promptly or prompting early intervention. The aforementioned data monitoring technology is existing and will not be elaborated upon further.

[0038] Reference Figure 2 and Figure 4 In a further embodiment, the structural housing 1 is also equipped with a main switch 14 electrically connected to the power supply unit 7 for the overall opening and closing of the device. In this embodiment, the device can be configured to activate flow monitoring when clamped onto the catheter; a single touch of the touch module 15 controls the infusion flow rate; and two touches of the touch module 15 execute catheter clamping. This portable clamping and metering device with intelligent module functionality is easy to operate, ensuring stable and orderly volume management during long-term peritoneal dialysis treatment at home. It accurately infuses the peritoneal dialysis fluid into the abdominal cavity during postoperative flushing; for patients starting regular peritoneal dialysis, it controls the amount of peritoneal dialysis fluid infused each time, effectively avoiding complications caused by increased intra-abdominal pressure, and ensuring the long-term treatment effect and safety of the patient.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from the present invention, and these improvements and additions should also be considered within the scope of protection of the present invention. Any modifications, alterations, and equivalent changes made by those skilled in the art based on the above-disclosed technical content without departing from the spirit and scope of the present invention are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A peritoneal dialysis catheter intelligent metering and clamping device, characterized in that, Includes a structural housing (1), the structural housing (1) is provided with a catheter insertion groove (11), and the structural housing (1) on the opening side of the insertion groove (11) is provided with a clamping buckle (3) adapted to clamp catheters of different dosage forms and diameters of peritoneal dialysis fluid. The structural shell (1) integrates: The clamping and flow rate control module (4) is used to control the infusion / drainage rate, dosage and on / off state of the infusion tube or drainage catheter; The flow monitoring module (5) is used to monitor the flow rate of the dialysis fluid in the drainage tubing; The data processing module (6) is electrically connected to the clamping execution and flow rate control module (4) and the flow monitoring module (5) and is used to control the opening and closing of each electrical component and the conversion of flow data; Power supply unit (7) is used for the overall power supply of the device; The structural housing (1) is provided with a touch module (15) and a display module (16) electrically connected to the data processing module (6). The touch module (16) is used to control the opening, closing and adjustment of the clamping execution and flow rate control module (4), and the display module (16) is used for intuitive display of flow rate and flow data.

2. The intelligent metering and clamping device for peritoneal dialysis catheters as described in claim 1, characterized in that, The flow monitoring module (5) includes two ultrasonic transducers (51) spaced apart vertically within the side wall of the mounting groove (11). Both ultrasonic transducers (51) are signal-connected to the data processing module (6). The contact layer between the ultrasonic transducers (51) and the conduit is coated with a coupling agent.

3. The intelligent metering and clamping device for peritoneal dialysis catheters as described in claim 1, characterized in that, The clamping execution and flow rate control module (4) includes a miniature electric cylinder (41) and a flow limiting clamp (42). Two sets of miniature electric cylinders (41) and flow limiting clamps (42) are provided. The miniature electric cylinder (41) is embedded in the side wall of the mounting groove (11). The flow limiting clamp (42) is fixedly sleeved on the piston rod of the miniature electric cylinder (41) to be close to or away from the conduit. The two flow limiting clamps (42) are arranged opposite to each other.

4. The intelligent metering and clamping device for peritoneal dialysis catheters as described in claim 3, characterized in that, The inner wall of the mounting groove (11) is provided with a limiting groove (12) for embedding the flow limiting clamp (42), and the limiting groove (12) serves as the starting position and fixed position of the flow limiting clamp (42).

5. The intelligent metering and clamping device for peritoneal dialysis catheters as described in claim 3, characterized in that, The thickness of the two sides of the current limiting clamp (42) is greater than the thickness of the middle part of the current limiting clamp (42), and the side of the current limiting clamp (42) away from the micro electric cylinder (41) is provided with an elastic rubber layer (9).

6. The intelligent metering and clamping device for peritoneal dialysis catheters as described in claim 1, characterized in that, The inner wall of the mounting groove (11) is also provided with an RGB color sensor (13) for recognizing the color of peritoneal dialysis fluid during drainage. The RGB color sensor (13) is connected to the data processing unit.

7. The intelligent metering and clamping device for peritoneal dialysis catheters as described in claim 6, characterized in that, The display module (16) is also equipped with an alarm unit. The alarm unit is electrically connected to the data processing module (6). When the RGB color sensor (13) detects red, white or purulent color, the data processing module (6) receives the data and feeds it back to the alarm unit. The alarm unit then issues an alarm signal or alarm sound.

8. The intelligent metering and clamping device for peritoneal dialysis catheters as described in claim 1, characterized in that, The power supply unit (7) uses a lithium battery, and the structural housing (1) is provided with a USB charging interface (8) that is electrically connected to the power supply unit (7).

9. The intelligent metering and clamping device for peritoneal dialysis catheters as described in claim 1, characterized in that, The clamping buckle (3) is a C-type buckle.

10. The intelligent metering and clamping device for peritoneal dialysis catheters as described in claim 1, characterized in that, The structure shell (1) is wrapped with a medical-grade silicone layer (2).

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