Integrated gastric lavage equipment based on physiological information feedback and control system thereof

Abstract

The invention relates to the technical field of medical equipment, and provides an integrated gastric lavage device based on physiological information feedback, comprising: a flexible catheter integrated with multiple sensors: a miniature multi-section pressure sensor is integrated at the front end of the catheter to monitor the pressure in the stomach in real time and ensure that the pressure does not exceed a safety threshold; a near infrared spectrum sensor and a turbidity sensor are embedded in the side wall of the catheter and are respectively used for detecting the hemoglobin content and the turbidity in suction liquid; the AI visual guidance module comprises a miniature camera arranged in the head of the catheter and is used for dynamically adjusting the intubation path in combination with a pharyngeal anatomical feature recognition algorithm and responding to swallowing actions of a patient to optimize the direction of the catheter in real time. Painless intubation is realized through AI visual guidance, and discomfort and injury risks of patients are reduced; the pressure in the stomach is monitored in real time through multiple sensors, and the flow speed is intelligently regulated to guarantee safety; the closed-loop system accurately controls water quantity, ensures liquid balance, and improves safety and effectiveness of gastric lavage treatment in all directions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment, in particular to an integrated gastric lavage device based on physiological information feedback and a control system thereof. BACKGROUND

[0002] The gastric lavage device is a professional instrument used for gastric lavage operation in the medical field. By means of specific technical means, the flushing liquid is injected into the stomach, and then the gastric contents and the flushing liquid are discharged out of the body, so as to achieve the purpose of treating diseases or rescuing patients. As a key medical means for acute poisoning rescue, removal of harmful substances in the stomach and treatment of pyloric obstruction, gastric lavage has an irreplaceable position in clinical application.

[0003] The traditional gastric lavage mainly relies on the experience of the operator for operation. This operation mode has significant limitations. On the one hand, the difference in experience of the operator easily leads to an increased risk of gastric mucosa injury in the gastric lavage process, such as improper intubation force, unbalanced flushing pressure control, etc., which may cause complications such as gastric mucosa laceration and bleeding. On the other hand, due to the lack of precise monitoring and evaluation means, it is difficult to ensure that the harmful substances in the stomach are completely removed in the gastric lavage process, thereby affecting the treatment effect and even delaying the condition. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an integrated gastric lavage device based on physiological information feedback and a control system thereof, which solves the problems of relying on the experience of the operator, easily leading to gastric mucosa injury or incomplete flushing, being unable to monitor the gastric pressure, bleeding risk and cleaning effect in real time, and imprecise water quantity control, easily causing electrolyte disorder or aspiration.

[0005] To achieve the above purpose, the present application is realized by the following technical scheme: an integrated gastric lavage device based on physiological information feedback, comprising: A flexible catheter integrated with multiple sensors: a micro multi-section pressure sensor is integrated at the front end of the catheter to monitor the gastric pressure in real time and ensure that it does not exceed the safety threshold; a near-infrared spectrum sensor and a turbidity sensor are embedded in the side wall of the catheter to detect the hemoglobin content and turbidity in the suction liquid, respectively; An AI visual guidance module: the AI visual guidance module includes a micro camera built-in the head of the catheter, which is used to dynamically adjust the intubation path in combination with the pharyngeal anatomical feature recognition algorithm and to optimize the catheter direction in real time in response to the swallowing action of the patient; A closed-loop control host: the closed-loop control host is used to: Receive pressure, hemoglobin and turbidity data; Dynamically adjust the water injection / suction flow rate based on pressure feedback, and trigger a bleeding alarm according to the sudden rise of hemoglobin; Generate a termination cleaning suggestion according to the turbidity decay curve; The difference between the water injection amount and the suction amount is calculated in real time, and the error is controlled within ±10 mL.

[0006] Preferably, the safety threshold is 5-15 mmHg, and when the pressure exceeds the threshold, the water injection is automatically paused and suction is started.

[0007] Preferably, the integrated gastric lavage device control system based on physiological information feedback includes a physiological information sensing module, a core control module, a dynamic execution module, and a safety warning module. The physiological information sensing module is integrated at the front end of the flexible catheter, including a multi-section pressure sensor that monitors the intragastric pressure in real time, with a range of 5-15 mmHg; a near-infrared spectrum sensor that detects the hemoglobin content of the suction liquid; and a turbidity sensor that quantifies the change in the turbidity of the flushing liquid. The core control module executes AI algorithms based on the data from the physiological information sensing module. Adaptive flow control dynamically adjusts the water injection / suction speed. Recommended water volume is calculated based on body weight and toxic properties. Based on the turbidity and hemoglobin threshold (residual toxins <0.1%, bleeding sensitivity >95%), a termination instruction is generated. The dynamic execution module includes a closed-loop liquid balance system that real-time calibrates the difference between the water injection amount and the suction amount (error <±10 mL), and a flexible catheter coated with a temperature-responsive hydrogel, which is controlled by the softening of the stomach temperature to reduce mucosal damage. The safety warning module real-time links: bleeding warning (sudden rise of hemoglobin), perforation warning (sudden drop in pressure and bubble signal), and aspiration warning (abnormal airway pressure).

[0008] Preferably, the physiological information sensing module also includes an AI vision-assisted intubation sub-module that collects pharyngeal anatomical features through a miniature camera, dynamically optimizes the catheter path in combination with swallowing action feedback, and adjusts the catheter direction in real time.

[0009] Preferably, the AI algorithm of the core control module is based on a multi-layer neural network, with input parameters including real-time pressure waveform, spectral absorption peak, and turbidity gradient, and output being water injection / suction speed control instructions and flushing termination decision.

[0010] Preferably, the dynamic execution module integrates a miniature filter collector, and the suction liquid is separated by multiple layers of filter membranes with a pore size gradient of 0.1μm-5μm, supporting toxic component capture and pathological analysis.

[0011] Preferably, the safety warning module interacts with the electronic medical record system to automatically generate encrypted medical records including pressure-time curve, hemoglobin concentration trend, and complication events, and synchronizes to the cloud database.

[0012] Preferably, the closed-loop liquid balance system realizes water injection / suction double-channel metering (sampling frequency >= 100 Hz) through a high-precision electromagnetic flowmeter, and error compensation adopts a Kalman filter algorithm.

[0013] Preferably, the AI vision-assisted intubation sub-module starts a low-power mode (<= 1 W) in the pharyngeal recognition stage, switches to a multi-spectral imaging mode after entering the stomach, and enhances the detection capability of bleeding points.

[0014] Preferably, the flexible catheter integrates sensors using a MEMS process, and the pressure sensor is a piezoresistive array (resolution 0.1 mmHg), and the NIRS sensor integrates a vertical cavity surface emitting laser (VCSEL) light source.

[0015] The application provides an integrated gastric lavage device based on physiological information feedback and a control system thereof. 1、The AI vision guidance module and the AI vision-assisted intubation sub-module of the present application work cooperatively, the miniature camera built-in the catheter head collects the anatomical features of the pharynx, and the catheter path is dynamically optimized in combination with the feedback of swallowing action; the pharyngeal structure of the patient can be accurately identified, the direction of the catheter is adjusted in real time during the intubation process, the discomfort and the risk of tissue damage caused by blind operation of the traditional intubation are greatly reduced; at the same time, the AI vision-assisted intubation sub-module intelligently switches the working mode in different stages, the low-power mode is started in the pharyngeal recognition stage to reduce energy consumption, the multi-spectral imaging mode is switched to after entering the stomach to enhance the detection capability of the stomach condition, the patient is provided with a more comfortable and safe intubation experience throughout the process, and painless guidance is realized.

[0016] 2、The flexible catheter with integrated multiple sensors is equipped with a miniature multi-section pressure sensor at the front end, the intragastric pressure can be monitored in real time, the range is set to 5-15 mmHg, the resolution reaches 0.1 mmHg, and the pressure change can be accurately captured; the closed-loop control host and the core control module are based on pressure feedback, and dynamically adjust the water injection / suction flow rate, when the pressure exceeds the safety threshold of 5-15 mmHg, the water injection is automatically paused and the suction is started, serious complications such as gastric perforation caused by excessive pressure are effectively prevented; a reliable safety guarantee is provided for the gastric lavage process, the gastric lavage operation is ensured to be carried out efficiently within a safe pressure range, and the medical risk is reduced.

[0017] 3、The present application realizes comprehensive monitoring of cleanliness and bleeding condition in the gastric lavage process through the near-infrared spectrum sensor and the turbidity sensor embedded in the catheter sidewall, and the safety warning module; the near-infrared spectrum sensor can detect the hemoglobin content in the suction liquid, and once the hemoglobin content increases suddenly, the safety warning module immediately triggers the bleeding alarm, so that the medical staff can take timely measures; the turbidity sensor quantifies the turbidity change of the flushing liquid, and the core control module generates a termination cleaning suggestion according to the turbidity decay curve, so as to ensure that the stomach cleaning reaches an ideal cleaning degree, the residual toxin is less than 0.1%, and the bleeding sensitivity is greater than 95%. In addition, the miniature filter collector integrated in the dynamic execution module can perform multi-layer filter membrane separation on the suction liquid, support toxin component capture and pathological analysis, and further improve the accuracy and effectiveness of the gastric lavage operation.

[0018] 4、The present application realizes precise water quantification management through the close cooperation of the closed-loop liquid balance system and the core control module; the closed-loop liquid balance system realizes injection / suction double-channel metering through a high-precision electromagnetic flowmeter, the sampling frequency is greater than or equal to 100 Hz, and the Kalman filtering algorithm is used for error compensation, so as to calibrate the injection amount and the suction amount difference in real time, and strictly control the error within ±10 mL. The core control module can also calculate the recommended water amount according to the patient's weight and the nature of the toxin, so as to ensure the liquid balance in the gastric lavage process, avoid the influence of excessive or insufficient water amount on the gastric lavage effect, reduce the discomfort of the patient caused by liquid imbalance, and improve the accuracy and safety of the gastric lavage treatment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The system block diagram of the present application. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0021] Embodiment one: Please refer to the accompanying Figure 1This invention provides an integrated gastric lavage device based on physiological information feedback, comprising: a flexible catheter integrating multiple sensors, the tail of which is connected to the main unit, and the head of which is used to insert into the patient's stomach for gastric lavage. The flexible catheter, coated with a temperature-responsive hydrogel, is controlled by the stomach temperature and softens upon entry, reducing mucosal friction damage. A miniature multi-segment pressure sensor is integrated at the catheter tip to monitor intragastric pressure in real time, ensuring it does not exceed a safe threshold of 5-15 mmHg. When the pressure exceeds the threshold, water injection is automatically paused and aspiration is initiated. Near-infrared spectroscopy and turbidity sensors are embedded in the catheter sidewall to detect the hemoglobin content and turbidity in the aspirated fluid, respectively. An AI visual guidance module includes a miniature camera built into the catheter head. This camera captures short exposure frames (1ms) to preserve highlight details and long exposure frames (10ms) to improve the signal-to-noise ratio in dark areas. This is used in conjunction with a pharyngeal anatomical feature recognition algorithm to dynamically adjust the insertion path and optimize the catheter direction in real time in response to the patient's swallowing movements.

[0022] The core parameters of the miniature camera are listed below:

[0023] The closed-loop control host receives pressure, hemoglobin, and turbidity data from a miniature multi-segment pressure sensor, a near-infrared spectroscopy sensor, and a turbidity sensor; dynamically adjusts the water injection / suction flow rate based on pressure feedback; triggers a bleeding alarm based on a sudden increase in hemoglobin; generates a termination cleaning suggestion based on the turbidity decay curve; and calculates the difference between the injection and suction volumes in real time, with the error controlled within ±10 mL.

[0024] Example 2: An integrated gastric lavage device control system based on physiological information feedback includes: a physiological information sensing module that monitors gastric pressure, hemoglobin content, and turbidity of lavage fluid in real time; a core control module that executes gastric lavage operations based on data from the physiological information sensing module using AI algorithms; a dynamic execution module that calibrates the difference between the injection volume and the aspiration volume in real time according to instructions; and a safety warning module that interacts with an electronic medical record system to automatically generate encrypted medical records including pressure-time curves, hemoglobin concentration trends, and complication events, and synchronizes them to a cloud database. The physiological information sensing module is integrated at the front end of the flexible catheter, wherein the flexible catheter integrates sensors using the MEMS process, the multi-section pressure sensor is a piezoresistive array (resolution 0.1 mmHg), the near-infrared spectrum sensor integrates a vertical cavity surface emitting laser (VCSEL) light source, and the turbidity sensor is integrated with the pipeline of the flexible catheter; wherein the multi-section pressure sensor monitors the intragastric pressure in real time, with a range of 5-15 mmHg; the near-infrared spectrum sensor detects the hemoglobin content of the aspirated liquid; the turbidity sensor quantifies the turbidity change of the flushing liquid; wherein the AI vision assisted intubation sub-module in the physiological information sensing module collects the pharyngeal anatomical features through a miniature camera, dynamically optimizes the catheter path in combination with the swallowing action feedback, and adjusts the catheter direction in real time, greatly reducing the discomfort and tissue damage risk caused by blind operation of traditional intubation.

[0025] The core control module executes instructions based on the data of the physiological information sensing module through AI algorithms, and realizes water injection / aspiration dual-channel metering (sampling frequency ≥100 Hz) through a high-precision electromagnetic flowmeter, and error compensation adopts Kalman filtering algorithm: According to the real-time value of the intragastric pressure (range 5-15 mmHg), the flow rate is controlled in stages: When the pressure is ≤8 mmHg, the upper limit of the water injection speed is 250 mL / min; When the pressure is >8 mmHg and ≤12 mmHg, the water injection speed is limited to 100-150 mL / min; When the pressure is >12 mmHg, the water injection is automatically paused and the aspiration is started (aspiration speed ≥200 mL / min); According to the body weight and the properties of the toxicant, the recommended water amount is calculated, wherein, The basic water injection amount formula: V = k × W + b (W is the body weight / kg, the coefficient k = 3 mL / kg, and b = 100 mL); Toxicant property correction factor: Corrosive toxicant: total water amount is reduced by 30%; Lipid-soluble toxicant: total water amount is increased by 20%; Based on the turbidity and hemoglobin threshold (residual toxicant <0.1%, bleeding sensitivity >95%), a termination instruction is generated, wherein termination condition 1: turbidity value of the aspirated liquid ≤5 NTU (corresponding to residual toxicant <0.1%) for 3 times in a row, and termination condition 2: NIRS detects hemoglobin concentration >0.5 mg / dL and continuously rises (bleeding sensitivity >95%); wherein the dynamic execution module integrates a miniature filter collector, the aspirated liquid is separated through multiple layers of filter membranes, the filter membrane pore size gradient is configured as 0.1-5 μm, and the toxicant composition capture and pathological analysis are supported.

[0026] The safety warning module real-time linkage of the following warning mechanisms and decision thresholds: When the NIRS detects the hemoglobin concentration of aspirated fluid >0.5 mg / dL and the rising rate ≥0.3 mg / dL / min, immediately stop water injection and start high-speed suction (≥250 mL / min), synchronous sound and light alarm (frequency 3 Hz); When the intragastric pressure drops ≥8 mmHg / 2 s, and the gas bubble signal is detected simultaneously, the ultrasonic sensor captures a continuous bubble group with a frequency >5 kHz, and the duration is ≥2 s, the whole system stops, negative pressure suction (-20 kPa) is started, and an emergency operation warning is pushed; When the airway pressure monitoring value exceeds the baseline by 30% and lasts for >10 s (baseline range: 5-15 cmH2O), the blood oxygen saturation decreases by >5% (compared with before gastric lavage), immediately switch to the head-high foot-low position (30° tilt), start bronchial flushing mode.

[0027] Finally, through interaction with the electronic medical record system, an encrypted medical record including the pressure-time curve, hemoglobin concentration trend, and complication events is automatically generated and synchronized to the cloud database.

[0028] Example three, the device and the traditional technology comparison table:

[0029]

[0030] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.

Claims

1. An integrated gastric lavage device based on physiological information feedback, characterized in that, Comprising: Flexible catheter integrated with multi-sensor: The catheter's front end is integrated with a miniature multi-segment pressure sensor, which monitors the intragastric pressure in real time to ensure that it does not exceed the safety threshold; The catheter's sidewall is embedded with a near-infrared spectroscopy sensor and a turbidity sensor, which are used to detect the hemoglobin content and turbidity of the suction liquid, respectively; AI visual guidance module: The AI visual guidance module includes a miniature camera built into the catheter's head, which is used to dynamically adjust the intubation path in combination with pharyngeal anatomical feature recognition algorithms, and to optimize the catheter direction in real time in response to the patient's swallowing action; Closed-loop control host: The closed-loop control host is used to: Receive pressure, hemoglobin, and turbidity data; Dynamically adjust the water injection / suction flow rate based on pressure feedback, and trigger a hemorrhage alarm based on a sudden increase in hemoglobin; Generate a termination cleaning suggestion based on the turbidity decay curve; Real-time calculation of the difference between the water injection volume and the suction volume, with an error control of ±10 mL.

2. The integrated stomach-washing device based on physiological information feedback according to claim 1, wherein, The safety threshold is 5-15 mmHg, and when the pressure exceeds the threshold, the water injection is automatically paused and the suction is started.

3. A control system for a physiological information feedback based integrated gastric lavage device, using the physiological information feedback based integrated gastric lavage device according to any one of claims 1-2, characterized in that, Comprising: Physiological information perception module, core control module, dynamic execution module, and safety warning module; The physiological information perception module is integrated at the front end of the flexible catheter, which includes: a multi-segment pressure sensor that monitors the intragastric pressure in real time, with a range of 5–15 mmHg; a near-infrared spectroscopy sensor that detects the hemoglobin content of the suction liquid; and a turbidity sensor that quantifies the turbidity changes of the irrigation liquid; The core control module, based on the data from the physiological information perception module, executes the following through AI algorithms: Adaptive flow control that dynamically adjusts the water injection / suction speed; Calculates the recommended water volume based on body weight and toxic properties; Generates termination instructions based on turbidity and hemoglobin thresholds (residual toxins <0.1%, bleeding sensitivity >95%); The dynamic execution module includes: a closed-loop liquid balance system that real-time calibrates the difference between the water injection volume and the suction volume (error <±10 mL), and a flexible catheter coated with a temperature-responsive hydrogel, which is controlled by the stomach temperature to soften and reduce mucosal damage; The safety warning module real-time links: hemorrhage warning (sudden increase in hemoglobin), perforation warning (sudden pressure drop and bubble signal), and aspiration warning (abnormal airway pressure).

4. The physiological information feedback-based integrated gastric lavage apparatus control system according to claim 3, wherein, The physiological information perception module also includes an AI visual assisted intubation sub-module, which collects pharyngeal anatomical features through a miniature camera, dynamically optimizes the catheter path in combination with swallowing action feedback, and adjusts the catheter direction in real time.

5. The integrated gastric lavage apparatus control system based on physiological information feedback according to claim 3, wherein, The AI algorithm of the core control module is based on a multi-layer neural network, with input parameters including real-time pressure waveform, spectral absorption peak, and turbidity gradient, and output being water injection / suction speed control instructions and irrigation termination decisions.

6. The integrated gastric lavage apparatus control system based on physiological information feedback according to claim 3, wherein, The dynamic execution module integrates a miniature filter collector, which separates the suction liquid through multiple layers of filter membranes with a pore size gradient of 0.1μm–5μm, supporting toxic component capture and pathological analysis.

7. The integrated gastric lavage apparatus control system based on physiological information feedback according to claim 3, wherein, The safety warning module interacts with the electronic medical record system to automatically generate encrypted medical records including pressure-time curve, hemoglobin concentration trend, and complication events, and synchronizes them to the cloud database.

8. The integrated gastric lavage apparatus control system based on physiological information feedback according to claim 3, wherein, The closed-loop liquid balance system realizes water injection / suction double-channel metering (sampling frequency ≥ 100 Hz) through a high-precision electromagnetic flowmeter, and error compensation is achieved by using Kalman filtering algorithm. 9.The physiological information feedback-based integrated gastric lavage device control system according to claim 4, wherein, The AI visual auxiliary intubation sub-module starts a low-power mode (≤ 1 W) in the pharyngeal identification stage, switches to a multi-spectral imaging mode after entering the stomach, and enhances the detection capability of bleeding points.

10. The integrated stomach-washing control system based on physiological information feedback according to claim 3, wherein, The flexible catheter integrates sensors by using the MEMS process, the pressure sensor is a piezoresistive array (resolution 0.1 mmHg), and the NIRS sensor integrates a vertical cavity surface emitting laser (VCSEL) light source.

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