A device for preventing the leakage of fluid after a laparocentesis

Abstract

This invention relates to the field of medical device technology, and in particular to a post-abdominal paracentesis anti-leakage device, comprising: a fixing part for fixing to the skin around the puncture site; a pressurizing part disposed on the fixing part for applying adjustable output pressure to the puncture site; a sensor assembly for directly or indirectly acquiring signals of changes in intra-abdominal pressure; and a control assembly electrically connected to the sensor assembly and the pressurizing part, respectively, for receiving and analyzing data transmitted by the sensor assembly, generating control commands based on the analysis results, and adjusting the output pressure of the pressurizing part on the puncture site. This achieves intelligent adjustment of the anti-leakage device's output pressure on the puncture site according to intra-abdominal pressure, so that when the patient is in a low-abdominal-pressure state such as lying flat, low output pressure is used to achieve anti-leakage and improve comfort, while when the patient is in a high-abdominal-pressure state such as sitting up, defecating, coughing, or sneezing, high output pressure is used to achieve anti-leakage.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a device for preventing leakage after abdominal paracentesis. Background Technology

[0002] Paracentesis is a commonly used clinical diagnostic and treatment technique, widely applied in diagnosing the cause of ascites, administering intraperitoneal medication, and therapeutic paracentesis. For patients with large amounts of ascites due to diseases such as cirrhosis and malignant tumors, paracentesis is an effective way to relieve symptoms such as abdominal distension and dyspnea. However, leakage at the puncture site after paracentesis has always been a challenge in clinical nursing. Because patients with large amounts of ascites have significantly higher intra-abdominal pressure (IAP) than normal, and this pressure fluctuates dramatically with changes in patient position and daily activities, leakage at the puncture site is very common. Continuous ascites leakage not only contaminates the patient's clothing and bedding, increasing the risk of infection, but also causes electrolyte and protein loss, delaying the patient's recovery process, and in severe cases, can even induce puncture site infection or peritonitis.

[0003] Currently, the main clinical method for preventing and managing puncture site leakage is the traditional gauze pressure bandage method. The procedure involves placing a sterile cotton ball or gauze at the puncture site and then securing it with adhesive tape or a bandage, using external mechanical pressure to seal the needle tract and prevent ascites leakage. However, clinical practice shows that the pressure is not adjustable and is difficult to maintain consistently. Traditional gauze pressure is a static, open-loop compression method. Initially, the pressure may be sufficient, but as the gauze absorbs ascites, its volume shrinks and its texture hardens, causing the actual pressure on the puncture site to drop rapidly, failing to effectively counteract intra-abdominal pressure. Furthermore, the adhesive tape easily loosens after patient activity, further exacerbating the pressure decay. Researchers have begun investigating adhesive-based mechanical pressure devices. For example, a Chinese patent (CN216570087U) discloses a wound anti-leakage pressure device, including a housing with adhesive coating on the lower outer ring and a limiting groove on the side wall of the upper opening. The pressure assembly includes a stud, which is slidably connected to the limiting groove in the housing via a slider on its lower outer wall. The lower end of the stud is fixed to a pressure head. Rotating the pressure assembly applies pressure to the wound, preventing leakage. The pressure assembly applies only downward pressure to the wound, and by incorporating a pressure sensor, it can apply pressure to the patient's wound more precisely. Another example is a Chinese patent (CN115137559A) that discloses a pressure-type fluid-collecting dressing component for easy observation of puncture sites. It includes a transparent dressing, a sterile absorbent cotton pad, a siphon tube, a collector, and a flat balloon. Inflating the flat balloon expands it, achieving pressure and anti-leakage of the wound.

[0004] The existing methods mentioned above all rely on manual adjustment. However, the pressure in the abdominal cavity is variable. Studies have shown that the intra-abdominal pressure of a patient in a supine and relaxed state is about 5-7 mmHg, but it can rise to 10-18 mmHg when standing. When coughing, sneezing, or straining during defecation, the intra-abdominal pressure can instantly spike to over 80-120 mmHg. Existing pressurization methods are difficult to dynamically adjust according to the patient's real-time condition. When a patient suddenly coughs or performs other actions that increase intra-abdominal pressure, the external pressure is far from sufficient to counteract the instantaneous increase in internal pressure, which can easily lead to a large amount of leakage. If the pressure is adjusted to a very high level from the beginning, it will greatly reduce the patient's comfort and make it difficult for them to fall asleep when resting in a supine position.

[0005] Therefore, this invention proposes a post-abdominal paracentesis anti-leakage device that can intelligently and dynamically adjust the output pressure to the puncture site according to the real-time changes in the patient's intra-abdominal pressure, thereby effectively preventing leakage, reducing nursing burden and improving patient comfort. Summary of the Invention

[0006] The purpose of this invention is to provide a device for preventing leakage after paracentesis, thereby solving the problems mentioned in the background art. The specific technical solution is as follows:

[0007] To achieve the above and other related objectives, the present invention aims to provide a post-abdominal paracentesis anti-leakage device, comprising: a fixing part for fixing to the skin around the puncture site; a pressurizing part disposed on the fixing part for applying an adjustable output pressure to the puncture site; a sensor assembly for directly or indirectly acquiring signals of changes in intra-abdominal pressure; and a control assembly electrically connected to the sensor assembly and the pressurizing part, respectively, for receiving and analyzing data transmitted by the sensor assembly, generating control commands based on the analysis results, and adjusting the output pressure of the pressurizing part on the puncture site; wherein the control assembly is configured to: control the pressurizing part to operate at a low output pressure when the patient is determined to be in a low abdominal pressure state based on the signal from the sensor assembly; and control the pressurizing part to operate at a high output pressure when the patient is determined to be in a high abdominal pressure state.

[0008] Preferably, the fixing part includes: a cylindrical outer shell; and an annular medical adhesive patch disposed on the bottom surface of the outer shell for attaching to the skin around the patient's puncture site.

[0009] Preferably, the pressurizing part includes: a connecting cylinder, detachably connected to the outer shell; a screw cap, threaded to the upper end of the connecting cylinder; a support member, slidably connected inside the connecting cylinder, with a medical cotton ball placed below it; a pressure sensor, disposed on the upper side of the support member; a first spring, disposed between the screw cap and the pressure sensor, for providing basic downward pressure; and an electromagnet push rod, disposed on the screw cap, with a second spring disposed between its movable slide rod and the pressure sensor; wherein, when the electromagnetic coil in the electromagnet push rod is energized, it drives the movable slide rod to move downward, compressing the second spring, and the pressure sensor feeds back pressure data to the control component in real time.

[0010] Preferably, the sensor assembly includes at least one muscle contraction sensor attached to the surface of the abdominal wall muscles of the patient, used to detect the deformation of the abdominal wall muscles caused by changes in intra-abdominal pressure, and output corresponding electrical signals to the control assembly.

[0011] Preferably, the support member is a hollow structure with multiple water absorption holes at the bottom.

[0012] Preferably, the inner bottom surface of the support member is provided with multiple elastic membranes, which cover the water absorption holes to form a check valve structure that allows liquid to enter the interior of the support member in one direction.

[0013] Preferably, the inner bottom surface of the support member is provided with a plurality of superabsorbent resin particles.

[0014] Preferably, an air extraction bladder is provided between the movable slide rod of the electromagnet push rod and the pressure sensor, and the air extraction pipe of the air extraction bladder is connected to the inside of the support member.

[0015] Preferably, the control components include: a microcontroller with a built-in digital signal processing unit; a power supply module for powering the entire device; an algorithm memory for storing trained machine learning model parameters for identifying the patient's intra-abdominal pressure status based on signals from the sensor components; and a wireless communication module for exchanging data with external devices.

[0016] Preferably, the control component is further configured to: receive the real-time feedback signal from the pressure sensor, compare it with the target output pressure, and dynamically adjust the drive signal sent to the electromagnet push rod.

[0017] The present invention provides a post-abdominal paracentesis anti-leakage device, which has the following beneficial effects:

[0018] This invention, through the inclusion of an adjustable pressure unit, a sensor assembly for indirectly detecting intra-abdominal pressure, and a control assembly, enables intelligent adjustment of the anti-seepage fluid device's output pressure at the puncture site based on intra-abdominal pressure. This allows for lower output pressure to prevent seepage when the patient is lying down (low abdominal pressure), improving comfort, and higher output pressure to prevent seepage when the patient is sitting up, defecating, coughing, or sneezing (high abdominal pressure). The hollow support component with absorbent holes actively absorbs excess moisture from the cotton ball, reducing its humidity. Furthermore, the addition of an air suction bag actively removes residual moisture from the cotton ball, keeping it relatively dry and effectively preventing eczema around the puncture site, thus promoting wound healing. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a cross-sectional view of the pressurizing part described in this invention;

[0022] Figure 3 This is a structural schematic diagram of the fixing part described in some embodiments. Detailed Implementation

[0023] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the anti-leakage device proposed in this invention after abdominal paracentesis. The advantages and features of this invention will become clearer from the following description. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this invention.

[0024] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the state, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0026] The core idea of ​​this invention is to use an adjustable pressure anti-seepage device as the main body, add a sensor component that indirectly or directly acquires intra-abdominal pressure, and a control component that analyzes the data transmitted by the sensor component and generates a control component that adjusts the output pressure of the anti-seepage device. This enables intelligent adjustment of the output pressure of the anti-seepage device at the puncture point according to the intra-abdominal pressure, so that when the patient is in a low abdominal pressure state such as lying flat, the anti-seepage is achieved with a low output pressure, and when the patient is in a high abdominal pressure state such as sitting up, defecating, coughing, or sneezing, the anti-seepage is achieved with a high output pressure.

[0027] like Figure 1 As shown, a post-abdominal paracentesis anti-leakage device includes a fixing part 1, a pressurizing part 2, a sensor assembly 3, and a control assembly 4.

[0028] In some embodiments, the fixing part 1 includes a housing 11 and an annular medical silicone patch 12 disposed on the bottom surface of the housing 11 for attaching to the skin around the patient's puncture site; in some embodiments, such as Figure 3 As shown, the outer shell 11 includes a base 111 and a cylindrical structure 112. The base 111 and the cylindrical structure 112 are hinged by a hinge 113. The base 111 is provided with a buckle 114 for limiting the cylindrical structure 112. A through hole is provided between the base 111 and the cylindrical structure 112 for placing the indwelling catheter 5. If the indwelling catheter 5 needs to be placed, before the puncture, the fixing part 1 is pasted on the skin around the patient's puncture site. Then, the buckle 114 is opened to open the cylindrical structure 112. After the indwelling catheter 5 is placed, the indwelling catheter 5 is placed into the through hole, and the cylindrical structure 112 is fastened to the base 111 to fix the indwelling catheter 5.

[0029] like Figure 2As shown, the pressurizing part 2 includes a connecting cylinder 21, a screw cap 22, a first spring 23, an electromagnet push rod 24, a second spring 25, a pressure sensor 26, and a support member 27. The connecting cylinder 21 is detachably connected to the outer shell 11. The upper end of the connecting cylinder 21 is threaded to the screw cap 22. The support member 27 is slidably connected inside the connecting cylinder 21. In use, a medical cotton ball 28 is placed below the support member 27. The pressure sensor 26 is set on the upper side of the support member 27. The first spring 23 is set between the screw cap 22 and the pressure sensor 26 to provide basic pressure. The electromagnet push rod 24 is set on the screw cap 22. The second spring 25 is set between the movable slide rod of the electromagnet push rod 24 and the pressure sensor 26. When the electromagnetic coil in the electromagnet push rod 24 is energized, it drives the movable slide rod to move downward, compressing the second spring 25. The pressure sensor 26 provides real-time feedback of pressure data, thereby realizing adjustable pressure.

[0030] Sensor assembly 3 includes at least one muscle contraction sensor, specifically a piezoelectric thin film sensor or a strain sensor, which is attached to the surface of the abdominal wall muscles of the patient. When the intra-abdominal pressure of the patient increases, the abdominal wall muscles will contract or the tension will increase, causing the muscle contraction sensor attached to the body surface to deform and output a corresponding electrical signal. Studies have shown that the electrical signal is highly positively correlated with the trend of intra-abdominal pressure change, with a Pearson correlation coefficient of over 0.96. Therefore, the electrical signal can be used as an indirect indicator of intra-abdominal pressure to predict an impending sudden increase in intra-abdominal pressure.

[0031] Control component 4 receives and analyzes the electrical signals detected by the muscle contraction sensor, performs preprocessing such as filtering, noise reduction, and normalization, calculates the patient's intra-abdominal pressure state, and outputs the corresponding electromagnetic coil power supply signal. Simultaneously, it receives feedback signals from the pressure sensor 26 in real time. For example, when an increase in intra-abdominal pressure is calculated, it increases the current flowing through the electromagnetic coil, compresses the second spring 25 to increase the pressure applied to the support member 27, reducing leakage under high pressure. In a supine, low-pressure state, the electromagnetic coil is de-energized to maintain low pressure and improve comfort. Control component 4 includes a microcontroller, a power module, an algorithm memory, and a display module. Specifically, the microcontroller uses a low-power, high-computing-power embedded processor, integrating a digital signal processing unit and a hardware accelerator. The power module includes a micro lithium battery or flexible printed battery, as well as a power management circuit, to power the entire device. The algorithm memory stores trained machine learning model parameters. The wireless communication module is used for data exchange with the nurse station system or a mobile terminal.

[0032] In use, the patient is first asked to lie flat and relax. The medical staff attaches the fixation part 1 to the skin around the puncture site and attaches the muscle contraction sensor to the rectus abdominis muscle area. The muscle contraction sensor reads the current electrical signal and sends it to the control component 4. The control component 4 recognizes this electrical signal as the baseline intra-abdominal pressure. The support 27 and medical cotton ball 28 are inserted into the connecting tube 21 and the connecting tube 21 is connected and fixed to the fixation part 1. The cap 22 is rotated to compress the first spring 23. The pressure sensor 26 data is read from the control component 4, and the patient's feelings are asked. Once the baseline pressure is reached, the rotation is stopped, and the installation is complete. When the patient tries to sit up or cough, the abdominal muscles begin to pre-contract, and the signal amplitude of the muscle contraction sensor increases significantly. The control component 4 recognizes this change and judges that the intra-abdominal pressure has increased. It immediately applies current to the excitation coil to increase the output pressure to cope with the high intra-abdominal pressure state.

[0033] The following provides a specific algorithm embodiment for control component 4;

[0034] S1. Signal Preprocessing Module

[0035] The microcontroller reads the raw voltage signal V from the muscle contraction sensor in real time at a sampling frequency of 1000Hz. raw (t); First, the following preprocessing is performed:

[0036] Filtering and noise reduction: A 50Hz notch filter is used to remove power frequency interference, and combined with a low-pass filter with a cutoff frequency of 20Hz, high-frequency electromyographic noise and motion artifacts are eliminated to obtain a smoothed signal V. filtered (t).

[0037] Baseline calibration: With the patient in a supine, relaxed state, the average electrical signal from the muscle contraction sensor was recorded for 5 consecutive seconds as the individualized baseline V. baseline All subsequent analyses are based on the relative change ΔV(t);

[0038] ΔV(t)=V filtered (t)−V baseline .

[0039] S2. State Recognition and Prediction Module

[0040] The algorithm's memory pre-stores a lightweight random forest classification model trained offline. This model takes the time-domain and frequency-domain features of the electrical signals from muscle contraction sensors within the last second as input and outputs the class probability of the patient's current state. The extracted features include:

[0041] Time-domain characteristics: mean, variance, peak value, peak-to-peak value, and waveform length within the sliding window.

[0042] Frequency domain characteristics: The energy of the power spectral density extracted by fast Fourier transform within a specific frequency band.

[0043] Trend characteristics: The slope change of the signal in the last 0.5 seconds is used to capture the initiation trend of muscle contraction.

[0044] The model outputs four state categories and their probabilities:

[0045] State 0: Low abdominal pressure resting state, corresponding to lying flat or sleeping;

[0046] State 1: Moderate to high abdominal pressure activity state, corresponding to sitting up, standing, and turning over;

[0047] State 2: High-risk warning signs, corresponding to an impending cough, sneeze, or straining during defecation, usually identified 100-200ms before the action;

[0048] State 3: Persistent high abdominal pressure, corresponding to ongoing violent actions such as coughing and vomiting;

[0049] To improve the robustness of predictions, a majority voting mechanism is adopted: the state switch is confirmed only after three consecutive classification results are consistent, in order to avoid false triggering.

[0050] S3. Target Pressure Calculation Module

[0051] Based on the current identified status, combined with individualized ascites volume and clinician settings, the target output pressure P is calculated. target (t); the specific rules are as follows:

[0052] Low abdominal pressure at rest:

[0053] P target =P base ;

[0054] Among them, P base The base pressure is set at a default value of 12 mmHg, which can be adjusted within the range of 8-15 mmHg to suit patient comfort.

[0055] Moderate to high abdominal pressure activity state:

[0056] P target =P base +ΔP active ;

[0057] Where ΔP active The default value for this increment is 15 mmHg, meaning the target pressure is 27 mmHg. This value can be adjusted between 20-35 mmHg based on the actual leakage when the patient sits up.

[0058] High-risk early warning signs:

[0059] Dynamic calculations based on estimated intra-abdominal pressure were employed.

[0060] ;

[0061] in, k is the currently estimated intra-abdominal pressure. safety For safety, we take 1.5; P offset For a safety margin, use 10 mmHg; P max This is the upper limit protection value, with a default of 100 mmHg, to prevent damage caused by excessive pressure. Calculated based on the linear relationship between the electrical signal from the muscle contraction sensor and intra-abdominal pressure:

[0062] ;

[0063] Where α and β are individual calibration coefficients.

[0064] Sustained high abdominal pressure:

[0065] Maintain the target pressure calculated in state 2, or output according to the preset cough countermeasure pressure (e.g., 90 mmHg), until the state duration exceeds 3 seconds or returns to state 0 / 1.

[0066] S4. Closed-loop pressure control module

[0067] Control component 4 will calculate the target pressure P target (t) and the current output pressure P measured by pressure sensor 26 actual (t) is compared, and an incremental digital PID controller is used to adjust the drive current of the electromagnet push rod 24. The control law is as follows:

[0068] ;

[0069] ;

[0070] in:

[0071] e(k) = P target (k)−P actual (k) represents the pressure deviation at the k-th sampling time;

[0072] This is the PWM current value output to the electromagnetic coil;

[0073] K p ,K i ,K d The PID parameters were tuned experimentally to achieve a fast response.

[0074] Since the cotton ball has a limited capacity to absorb permeate, the support member 27 adopts a hollow structure with multiple water-absorbing holes at the bottom. In some embodiments, the inner bottom surface of the support member 27 is provided with multiple elastic membranes that cover the water-absorbing holes, forming a check valve structure that allows water to enter the support member 27. In other embodiments, the inner bottom surface of the support member 27 is not provided with elastic membranes, but with multiple superabsorbent resin particles. When the support member 27 is pressed down, excess water in the cotton ball will be squeezed out and collected in the support member 27 through the water-absorbing holes. Both embodiments can reduce the humidity of the cotton ball.

[0075] In some embodiments, an air suction bladder 29 is also provided between the movable slide rod of the electromagnet push rod 24 and the pressure sensor 26. The air suction pipe of the air suction bladder 29 is connected to the inside of the support member 27. When the movable slide rod moves down, the air suction bladder 29 exhausts air through its own one-way valve. When the movable slide rod moves up, the air suction bladder 29 extracts the air from the support member 27, generating negative pressure in the support member 27, further absorbing the residual moisture in the cotton ball, allowing the cotton ball to dry further, and avoiding the eczema caused by the cotton ball with excessive humidity.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A device for preventing leakage after paracentesis, comprising: Fixation part (1) is used to fix it to the skin around the puncture site of the patient; The pressurizing part (2) is disposed on the fixing part (1) and is used to apply an adjustable output pressure to the puncture point; Sensor component (3) is used to directly or indirectly acquire the signal of changes in intra-abdominal pressure in the patient; The control component (4) is electrically connected to the sensor component (3) and the pressurizing unit (2) respectively, and is used to receive and analyze the data transmitted by the sensor component (3), generate control commands based on the analysis results, and adjust the output pressure of the pressurizing unit (2) on the puncture point; The control component (4) is configured to: when the patient is in a low abdominal pressure state according to the signal of the sensor component (3), control the pressurizing part (2) to work at a low output pressure; when the patient is in a high abdominal pressure state, control the pressurizing part (2) to work at a high output pressure.

2. The anti-leakage device after abdominal paracentesis according to claim 1, characterized in that, The fixing part (1) includes: Cylindrical outer shell (11); An annular medical adhesive patch (12) is disposed on the bottom surface of the outer shell (11) for attaching to the skin around the patient's puncture site.

3. The anti-leakage device after abdominal paracentesis according to claim 2, characterized in that, The pressurizing part (2) includes: The connecting cylinder (21) is detachably connected to the outer shell (11); A screw cap (22) is threaded to the upper end of the connecting cylinder (21); The support (27) is slidably connected inside the connecting cylinder (21), and is used to place a medical cotton ball (28) below it. A pressure sensor (26) is disposed on the upper side of the support member (27); A first spring (23) is disposed between the screw cap (22) and the pressure sensor (26) to provide base pressure; An electromagnet push rod (24) is mounted on the cap (22), and a second spring (25) is provided between its movable slide rod and the pressure sensor (26). When the electromagnetic coil in the electromagnet push rod (24) is energized, it drives the sliding rod to move downward and compress the second spring (25). The pressure sensor (26) feeds back pressure data to the control component (4) in real time.

4. The anti-leakage device after abdominal paracentesis according to claim 3, characterized in that, The sensor assembly (3) includes at least one muscle contraction sensor, which is attached to the surface of the abdominal wall muscles of the patient to detect the deformation of the abdominal wall muscles caused by changes in intra-abdominal pressure and output a corresponding electrical signal to the control assembly (4).

5. The anti-leakage device after abdominal paracentesis according to claim 3, characterized in that, The support member (27) is a hollow structure with multiple water absorption holes at the bottom.

6. The anti-leakage device after abdominal paracentesis according to claim 5, characterized in that, The inner bottom surface of the support member (27) is provided with multiple elastic membranes, which cover the water absorption holes to form a check valve structure that allows liquid to enter the interior of the support member (27) in one direction.

7. The anti-leakage device after abdominal paracentesis according to claim 5, characterized in that, The inner bottom surface of the support member (27) is provided with multiple superabsorbent resin particles.

8. The anti-leakage device after abdominal paracentesis according to claim 3, characterized in that, An air extraction bladder (29) is also provided between the movable slide rod of the electromagnet push rod (24) and the pressure sensor (26), and the air extraction pipe of the air extraction bladder (29) is connected to the inside of the support member (27).

9. The anti-leakage device after abdominal paracentesis according to claim 1, characterized in that, The control component (4) includes: Microcontroller with built-in digital signal processing unit; The power module supplies power to the entire device; The algorithm memory stores the parameters of the trained machine learning model, which is used to identify the patient's intra-abdominal pressure status based on the signal from the sensor component (3). The wireless communication module is used for data exchange with external devices.

10. A post-abdominal paracentesis anti-leakage device according to claim 8, characterized in that, The control component (4) is further configured as follows: The system receives the real-time feedback signal from the pressure sensor (26), compares it with the target output pressure, and dynamically adjusts the drive signal sent to the electromagnet push rod (24).

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