Intelligent temperature control ventricle double-circulation washing system and method based on dynamic pressure feedback

Abstract

The invention provides an intelligent temperature-control ventricular double-circulation washing system and method based on dynamic pressure feedback, the system comprises a temperature-control water inlet device, a double-circulation washing catheter and a balloon type pressure buffer, the double-circulation washing catheter is internally provided with a centrally-arranged sensing cavity, a flushing cavity and a drainage cavity, and the flushing cavity and the drainage cavity wrap the two sides of the sensing cavity; a pressure sensor and a temperature sensor are arranged in the sensing cavity; a water outlet of the temperature control water inlet device is communicated with the starting end of the flushing cavity, the starting end of the drainage cavity is used for being connected with an external drainage device, the balloon type pressure buffer is arranged at the tail end of the double-circulation washing catheter, and the tail end of the double-circulation washing catheter is used for being placed in the ventricle of a patient. The ventricle flushing device can improve ventricle flushing efficiency and safety.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, and in particular to an intelligent temperature-controlled ventricular dual-circulation washing system and method based on dynamic pressure feedback. Background Art

[0002] As a critical neurosurgery emergency, intraventricular infection faces multiple technical bottlenecks in its clinical treatment: traditional ventricular drainage relies on a passive drainage mechanism, which makes it difficult to effectively remove purulent secretions and stubborn biofilms, such as the dense biofilm adhesion formed by Pseudomonas aeruginosa; antibiotic treatment is limited by the efficiency of blood-brain barrier penetration (<10%) and the risk of neurotoxicity (for example, vancomycin cerebrospinal fluid concentration >40μg / mL can induce serious complications such as epilepsy), resulting in a narrow safe concentration window for local irrigation; the reinfection rate 30 days after surgery is as high as 15%-25%, mainly due to residual drainage dead space and incomplete biofilm removal.

[0003] These factors together lead to the high mortality rate of ventricular infection, and the development of new intelligent treatment systems is urgent. Summary of the Invention

[0004] In order to solve the above problems in the prior art, the present invention provides an intelligent temperature-controlled ventricular dual-circulation washing system and method based on dynamic pressure feedback to improve the efficiency and safety of ventricular washing.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: In a first aspect, the present invention provides an intelligent temperature-controlled ventricular dual-circulation lavage system based on dynamic pressure feedback, comprising a temperature-controlled water inlet device, a dual-circulation lavage catheter, and a balloon-type pressure buffer. The dual-circulation lavage catheter is provided with a centrally located sensing cavity and a flushing cavity and a drainage cavity surrounding the sensing cavity. The sensing cavity is provided with a pressure sensor and a temperature sensor. The water outlet of the temperature-controlled water inlet device is connected to the starting end of the flushing cavity, the starting end of the drainage cavity is used to connect to an external drainage device, the balloon-type pressure buffer is arranged on the end of the dual-circulation toilet catheter, and the end of the dual-circulation toilet catheter is used to be placed in the patient's ventricle.

[0006] The beneficial effects of the present invention are as follows: through the three-cavity structure of the dual-circulation lavage catheter, dual-circulation lavage is achieved in the lavage cavity and the drainage cavity, thereby improving the efficiency of ventricular lavage; the water temperature is controlled by the temperature-controlled water inlet device, and pressure feedback compensation is performed by the pressure sensor and the balloon-type pressure buffer, thereby avoiding surgical risks caused by excessive water temperature deviation or excessive intracranial pressure, thereby improving the safety of ventricular lavage.

[0007] Optionally, the temperature-controlled water inlet device includes a water inlet pipe, a preheater, a heating wire and a temperature compensation micropump, the preheater is sleeved on the water inlet of the water inlet pipe, the heating wire is wrapped around the outside of the water inlet pipe wall, and the temperature compensation micropump is located in the water inlet pipe and is connected to the water outlet of the water inlet pipe.

[0008] According to the above description, three-level redundant temperature control is used to ensure precise control of the flushing water temperature.

[0009] Optionally, switches are provided on the water inlet and the water outlet of the water inlet pipe.

[0010] Optionally, the pressure sensor and temperature sensor are optical fiber sensors that integrate pressure measurement and temperature measurement.

[0011] Optionally, a spiral guide groove is provided in the flushing cavity.

[0012] Optionally, an anti-reflux valve is provided on the drainage cavity near the starting end.

[0013] In a second aspect, the present invention provides an intelligent temperature-controlled ventricular dual-circulation lavatory method based on dynamic pressure feedback, using the intelligent temperature-controlled ventricular dual-circulation lavatory system based on dynamic pressure feedback of the first aspect, comprising the following steps: S1. Under neuronavigation, implanting a dual-circulation lavage catheter into the patient's cerebral ventricle, and injecting a preset buffer into the balloon pressure buffer to establish pressure buffering; S2. Fill the rinsing chamber with water through the temperature-controlled water inlet device to flush the patient's ventricles, and drain the cerebrospinal fluid in the patient's ventricles through the drainage chamber to achieve double-circulation washing; S3. Monitoring pressure using a pressure sensor and regulating the flow rate in the balloon pressure buffer and the dual-circulation toilet catheter according to the detected real-time pressure; S4. Monitor the temperature through a temperature sensor and regulate the temperature-controlled water inlet device according to the detected real-time temperature.

[0014] Optionally, step S3 includes: Obtaining a target pressure P_target, and setting an initial flow rate Q_base of the dual-circulation toilet catheter and an initial volume of a buffer solution in the balloon pressure buffer according to the target pressure; The pressure is monitored by a pressure sensor to obtain a real-time pressure P(t). It is determined whether the difference between the real-time pressure and the target pressure exceeds a preset pressure difference. If so, the pressure PID regulator is activated. Otherwise, the regulated flow rate Q(t) is obtained according to the pressure-flow rate dynamic model. The real-time flow rate of the dual-circulation toilet catheter is adjusted according to the regulated flow rate. The formula of the pressure-flow rate dynamic model is: Q(t)=Q_base×[1-0.03×(P(t)-P_target)].

[0015] Optionally, step S3 further includes: Inputting the real-time pressure and the patient's heart rate and respiratory rate into an intracranial pressure prediction model based on an LSTM neural network to perform pressure prediction to obtain a predicted pressure, and updating an intracranial pressure baseline value P_baseline according to the predicted pressure; According to the dynamic adjustment model of the pressure safety interval and the intracranial pressure baseline value P_baseline, the safe intracranial pressure value P_safe is obtained, and its formula is: P_safe=0.8×P_baseline+0.2×P(t); It is determined whether the real-time pressure P(t) is greater than a preset coefficient multiplied by a safe intracranial pressure value P_safe. If so, emergency pressure relief is triggered to regulate the balloon pressure buffer.

[0016] Optionally, step S4 includes: Obtaining a target temperature, setting the heating temperature of the preheater and the heating wire in the temperature-controlled water inlet device according to the target temperature, and regulating the temperature compensation micropump in the temperature-controlled water inlet device based on PID; The temperature is monitored by a temperature sensor to obtain the real-time temperature, and it is determined whether the real-time temperature is greater than the upper temperature limit. If so, the liquid cooling cycle is started. Otherwise, it is determined whether the real-time temperature is less than the lower temperature limit. If so, the emergency heating mode is activated to regulate the temperature control water inlet device.

[0017] Among them, the technical effects corresponding to the intelligent temperature-controlled ventricular dual-circulation lavage method based on dynamic pressure feedback provided by the second aspect refer to the relevant description of the intelligent temperature-controlled ventricular dual-circulation lavage system based on dynamic pressure feedback provided by the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A cross-sectional schematic diagram of a dual-circulation toilet catheter and a balloon-type pressure buffer used in conjunction with each other according to an embodiment of the present invention; Figure 2 Schematic diagram of a longitudinal section of a dual-circulation toilet duct according to an embodiment of the present invention; Figure 3 Schematic diagram of a longitudinal section of a temperature-controlled water inlet device according to an embodiment of the present invention; Figure 4 Schematic diagram of the flow of an intelligent temperature-controlled ventricular dual-circulation lavage method based on dynamic pressure feedback according to an embodiment of the present invention; Figure 5 Schematic diagram of the pressure control process involved in an embodiment of the present invention; Figure 6 Schematic diagram of the temperature control process involved in an embodiment of the present invention.

[0019] Description of reference numerals: 1. Temperature-controlled water inlet device; 11. Water outlet; 12. Water outlet switch; 13. Preheater; 14. Washer; 15. Heating wire; 16. Water inlet pipe; 17. Temperature-compensated micro pump; 18. Water outlet; 19. Water outlet switch; 2. Double-circulation wash tube; 21. Sensing cavity; 22. Flushing cavity; 23. Drainage cavity; 3. Balloon pressure buffer. DETAILED DESCRIPTION

[0020] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0021] Example 1 Please refer to Figures 1 to 3 , an intelligent temperature-controlled ventricular dual-circulation lavage system based on dynamic pressure feedback, including a temperature-controlled water inlet device, a dual-circulation lavage catheter and a balloon pressure buffer.

[0022] like Figure 1 and Figure 2 As shown, the dual-circulation lavatory catheter comprises a centrally located sensing chamber, flanked by flushing and drainage chambers. The sensing chamber houses a pressure sensor and a temperature sensor. In this embodiment, the pressure and temperature sensors are integrated into a single fiber optic sensor. The pressure range of the fiber optic sensor is 0-30 cmH2O, with an accuracy of ±0.5 cmH2O.

[0023] The balloon pressure buffer is provided on the end of the dual-circulation toilet catheter. In this embodiment, the balloon pressure buffer is used to buffer the liquid pressure.

[0024] In this embodiment, a spiral guide groove is provided in the flushing cavity, with a pitch of 1.5 mm and a groove depth of 0.2 mm, which can reduce flow resistance. An anti-reflux valve is provided near the beginning of the drainage cavity. Figure 2The flushing and drainage lumens shown in FIG have the same longitudinal cross-sectional area within the dual-circulation toilet duct. However, in this embodiment, the longitudinal cross-sectional area of ​​the drainage lumens within the dual-circulation toilet duct is larger than the longitudinal cross-sectional area of ​​the flushing lumens within the dual-circulation toilet duct. Thus, the above-mentioned three-lumen duct structure can improve flushing efficiency.

[0025] like Figure 3 As shown, the temperature-controlled water inlet device includes an inlet pipe, a preheater, a heating wire, and a temperature-compensating micropump. The preheater is sleeved on the water inlet of the water inlet pipe, the heating wire is wrapped around the outer wall of the water inlet pipe, and the temperature-compensating micropump is located inside the water inlet pipe and connected to the water outlet of the water inlet pipe. The power density of the heating wire wrapped around the outer wall of the water inlet pipe is 0.5W / cm², the line width is 50μm, and the spacing is 200μm. Thus, through three levels of redundant temperature control, precise control of the flushing water temperature is guaranteed.

[0026] In this embodiment, a water inlet switch is provided on the water inlet of the water inlet pipe, and a water outlet switch is provided on the water outlet.

[0027] Therefore, in this embodiment, the water outlet of the temperature-controlled water inlet device is connected to the starting end of the flushing chamber, the starting end of the drainage chamber is used to connect to an external drainage device, and the end of the dual-circulation washing catheter is used to be placed in the patient's ventricle, thereby realizing dual-circulation washing.

[0028] Example 2 Please refer to Figure 4 The intelligent temperature-controlled ventricular dual-circulation lavatory method based on dynamic pressure feedback uses the intelligent temperature-controlled ventricular dual-circulation lavatory system based on dynamic pressure feedback of Example 1, including the following steps: S1. Under neuronavigation, a dual-circulation lavage catheter is implanted into the patient's ventricle, and a preset buffer is injected into the balloon pressure buffer to establish pressure buffering.

[0029] In this embodiment, the buffer solution is 0.9% NaCl solution.

[0030] S2. Water is injected into the flushing chamber through the temperature-controlled water inlet device to flush the patient's ventricles, and the cerebrospinal fluid in the patient's ventricles is drained through the drainage chamber to achieve double-circulation washing.

[0031] The temperature-controlled water inlet device performs temperature control according to the target temperature, as shown in step S4. In this embodiment, the target temperature is 37°C.

[0032] S3. Monitor the pressure through the pressure sensor and adjust the flow rate in the balloon pressure buffer and the dual-circulation washing catheter according to the detected real-time pressure.

[0033] Reference Figure 5 It can be seen that step S3 includes: S31 . Obtain a target pressure P_target, and set an initial flow rate Q_base of the dual-circulation lavage catheter and an initial volume of a buffer solution in the balloon pressure buffer according to the target pressure.

[0034] In this embodiment, the target pressure P_target is 15 cmH2O, the initial flow rate Q_base is 0.5 mL / min, and the volume of the balloon pressure buffer is 0.5 mL±0.1 mL.

[0035] S32. Monitor the pressure using a pressure sensor to obtain a real-time pressure P(t). Determine whether the difference between the real-time pressure and the target pressure exceeds a preset pressure difference. If so, activate the pressure PID regulator. Otherwise, obtain an adjusted flow rate Q(t) according to a pressure-flow rate dynamic model. Adjust the real-time flow rate of the dual-circulation lavatory catheter based on the adjusted flow rate. The formula for the pressure-flow rate dynamic model is: Q(t)=Q_base×[1-0.03×(P(t)-P_target)].

[0036] Among them, the pressure PID regulator acts on the water inlet pump, and it adjusts the error signal through a linear combination of the proportional (P), integral (I), and differential (D) parts. The PID output formula of the continuous system is: ; Where e(t) is the system deviation of the continuous system, that is, the difference between the set value and the actual output value. Therefore, after discretization, it is suitable for microprocessor implementation and can be set through the panel or communication interface. 、 、 .

[0037] The dual-circulation lavatory catheter has an adjustable flow rate range of 0.1-1 mL / min, with an accuracy of ±0.05 mL / min. The pressure PID regulator is activated when |P(t)-P_target|>3 cmH2O. Therefore, the preset pressure differential in this embodiment is 3 cmH2O.

[0038] Reference Figure 5 As can be seen, when the pressure sensor detects that P exceeds 18cmH2O, that is, exceeds 3cmH2O, the pressure PID regulator is activated, reducing the flow rate to 0.3mL / min, and the liquid cooling cycle is activated to maintain temperature stability. When the real-time pressure returns to 14cmH2O, the flow rate gradually increases to 0.4mL / min. At this point, the flow rate is adjusted according to the pressure-flow rate dynamic model, gradually increasing it back to 0.5mL / min.

[0039] S33. Input the real-time pressure and the patient's heart rate and respiratory rate into the intracranial pressure prediction model based on the LSTM neural network to perform pressure prediction, obtain the predicted pressure, and update the intracranial pressure baseline value P_baseline according to the predicted pressure.

[0040] The intracranial pressure prediction model of this embodiment is used to predict the trend of intracranial pressure changes. The model establishment process is as follows: (1) Data preprocessing. This includes normalizing input parameters such as pressure, heart rate, and respiratory rate, and dividing the time series data into windows of fixed length, such as 30 minutes per window.

[0041] (2) Network structure design. It includes an input layer with a dimension of time step * number of features, an LSTM layer, and an output layer for predicting intracranial pressure.

[0042] Among them, LSTM is the abbreviation of Long Short-Term Memory, which means long short-term memory network.

[0043] (3) Model training. The mean-square error (MSE) is used as the loss function, and the stochastic gradient descent (SGD) optimizer is used to obtain the model weights through back propagation.

[0044] (4) Real-time prediction. Use the trained model to perform inference, predict intracranial pressure, and calculate the mean absolute error (MAE) and R 2 (R-squared, coefficient of determination) to assess prediction accuracy.

[0045] Among them, the intracranial pressure baseline value P_baseline refers to the patient's stable intracranial pressure (ICP) in the resting state, reflecting the individual's physiological normality. For example, clinically, ICP>30cmH2O indicates intracranial hypertension.

[0046] Therefore, this embodiment dynamically corrects the intracranial pressure baseline value P_baseline based on the predicted pressure obtained by the intracranial pressure prediction model. Specifically, this embodiment uses long-term dependencies to identify fluctuation patterns in the intracranial pressure baseline value P_baseline, such as circadian rhythms, to distinguish physiological from pathological intracranial pressure fluctuations and predict the trend of intracranial pressure changes. Specifically, this method dynamically corrects and updates the intracranial pressure baseline value P_baseline by measuring the offset of intracranial pressure relative to the intracranial pressure baseline value P_baseline.

[0047] S34. The safe intracranial pressure value P_safe is obtained according to the dynamic adjustment model of the pressure safety interval and the intracranial pressure baseline value P_baseline. The formula is: P_safe=0.8×P_baseline+0.2×P(t).

[0048] S35. Determine whether the real-time pressure P(t) is greater than a preset coefficient multiplied by a safe intracranial pressure value P_safe. If so, trigger emergency pressure relief to regulate the balloon pressure buffer.

[0049] In this embodiment, the preset coefficient is 120%. In other embodiments, the preset coefficient ranges from 108% to 130%.

[0050] S4. Monitor the temperature through the temperature sensor and adjust the temperature-controlled water inlet device according to the detected real-time temperature.

[0051] Among them, the sampling frequency of the optical fiber sensor for pressure monitoring and temperature monitoring is 100Hz.

[0052] Reference Figure 6 It can be seen that step S4 includes: S41. Obtain the target temperature, set the heating temperature of the preheater and the heating wire in the temperature-controlled water inlet device according to the target temperature, and regulate the temperature compensation micropump in the temperature-controlled water inlet device based on PID.

[0053] In this embodiment, the target temperature is 37° C., so the heating temperature of the preheater and the heating wire are set to 37° C.±0.2° C. The PID parameters of the temperature-compensated micropump are Kp=1.2, Ki=0.05, and Kd=0.3.

[0054] S42. Monitor the temperature through the temperature sensor to obtain the real-time temperature, and determine whether the real-time temperature is greater than the upper temperature limit. If so, start the liquid cooling cycle. Otherwise, determine whether the real-time temperature is less than the lower temperature limit. If so, activate the emergency heating mode to regulate the temperature control water inlet device.

[0055] In this embodiment, the upper temperature limit is 37.8°C, and the lower temperature limit is 36.5°C. In other equivalent embodiments, the upper temperature limit may be 37.3-38.0°C, and the lower temperature limit may be 36.0-36.7°C.

[0056] Among them, the liquid cooling cycle is set up through a double-circulation design, that is, low-temperature liquid is introduced into the flushing cavity and flows out through the drainage cavity. Through the heat exchange of the liquid medium, heat transfer is completed to realize the liquid cooling cycle.

[0057] According to the medical-clinical neurology academic journal Neurosurgery 2023, "clinical data show that its fixed flushing rate leads to intracranial pressure >25cmH2O in 15% of cases" and the academic journal J Neuroeng Rehabil 2021 focusing on neuroengineering and rehabilitation engineering, "every 1°C temperature deviation leads to an 18% increase in the risk of epilepsy", it can be seen that the fixed flushing rate and flushing temperature fluctuations in the existing technology will affect the safety of the operation. Therefore, this embodiment not only improves the efficiency of ventricular flushing through the three-cavity structure of the dual-circulation flushing catheter, but also improves the safety of ventricular flushing through temperature control and pressure control.

[0058] Since the systems / devices described in the above embodiments of the present invention are systems / devices used to implement the methods of the above embodiments of the present invention, those skilled in the art will be able to understand the specific structures and variations of these systems / devices based on the methods described in the above embodiments of the present invention, and thus will not be described in detail here. All systems / devices used in the methods of the above embodiments of the present invention are within the scope of protection of the present invention.

[0059] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, apparatus, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROMs, optical storage, etc.) containing computer-usable program code.

[0060] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (apparatus), and computer program products according to embodiments of the invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions.

[0061] It should be noted that, in the claims, any reference signs placed between brackets shall not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The invention may be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In claims enumerating several means, several of these means may be embodied by one and the same hardware. The use of the words first, second, third etc. is for convenience only and does not indicate any order. These words may be understood as part of the component name.

[0062] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0063] In addition, it should be noted that, in the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0064] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments after learning the basic creative concept. Therefore, the claims should be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0065] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims and their equivalents, the present invention shall also include such modifications and variations.

Claims

1. Intelligent temperature-controlled ventricular dual-circulation lavatory system based on dynamic pressure feedback, characterized by: It includes a temperature-controlled water inlet device, a dual-circulation toilet catheter, and a balloon-type pressure buffer. The dual-circulation toilet catheter is provided with a centrally located sensing cavity and a flushing cavity and a drainage cavity surrounding the sensing cavity. The sensing cavity is provided with a pressure sensor and a temperature sensor. The water outlet of the temperature-controlled water inlet device is connected to the starting end of the flushing cavity, the starting end of the drainage cavity is used to connect to an external drainage device, the balloon-type pressure buffer is arranged on the end of the dual-circulation toilet catheter, and the end of the dual-circulation toilet catheter is used to be placed in the patient's ventricle.

2. The intelligent temperature-controlled ventricular dual-circulation washing system based on dynamic pressure feedback according to claim 1 is characterized in that: The temperature-controlled water inlet device includes a water inlet pipe, a preheater, a heating wire and a temperature compensation micropump. The preheater is sleeved on the water inlet of the water inlet pipe, the heating wire is wrapped around the outside of the water inlet pipe wall, and the temperature compensation micropump is located in the water inlet pipe and is connected to the water outlet of the water inlet pipe.

3. The intelligent temperature-controlled ventricular dual-circulation washing system based on dynamic pressure feedback according to claim 2 is characterized in that: The water inlet and the water outlet of the water inlet pipe are both provided with switches.

4. The intelligent temperature-controlled ventricular dual-circulation washing system based on dynamic pressure feedback according to claim 3 is characterized in that: The pressure sensor and temperature sensor are optical fiber sensors that integrate pressure measurement and temperature measurement.

5. The intelligent temperature-controlled ventricular dual-circulation washing system based on dynamic pressure feedback according to claim 1 or 2, characterized in that: A spiral guide groove is provided in the flushing cavity.

6. The intelligent temperature-controlled ventricular dual-circulation washing system based on dynamic pressure feedback according to claim 1 or 2, characterized in that: An anti-reflux valve is provided on the drainage cavity near the starting end.

7. An intelligent temperature-controlled ventricular dual-circulation lavatory method based on dynamic pressure feedback, using the intelligent temperature-controlled ventricular dual-circulation lavatory system based on dynamic pressure feedback as described in any one of claims 1 to 6, comprising the following steps: S1. Under neuronavigation, implanting a dual-circulation lavage catheter into the patient's cerebral ventricle, and injecting a preset buffer into the balloon pressure buffer to establish pressure buffering; S2. Fill the rinsing chamber with water through the temperature-controlled water inlet device to flush the patient's ventricles, and drain the cerebrospinal fluid in the patient's ventricles through the drainage chamber to achieve double-circulation washing; S3. Monitoring pressure using a pressure sensor and regulating the flow rate in the balloon pressure buffer and the dual-circulation toilet catheter according to the detected real-time pressure; S4. Monitor the temperature through a temperature sensor and regulate the temperature-controlled water inlet device according to the detected real-time temperature.

8. The intelligent temperature-controlled ventricular double-circulation washing method based on dynamic pressure feedback according to claim 7 is characterized in that: The step S3 comprises: Obtaining a target pressure P_target, and setting an initial flow rate Q_base of the dual-circulation lavatory catheter and an initial volume of a buffer solution in the balloon pressure buffer according to the target pressure; The pressure is monitored by a pressure sensor to obtain a real-time pressure P(t). It is determined whether the difference between the real-time pressure and the target pressure exceeds a preset pressure difference. If so, the pressure PID regulator is activated. Otherwise, the regulated flow rate Q(t) is obtained according to the pressure-flow rate dynamic model. The real-time flow rate of the dual-circulation toilet catheter is adjusted according to the regulated flow rate. The formula of the pressure-flow rate dynamic model is: Q(t)=Q_base×[1-0.03×(P(t)-P_target)].

9. The intelligent temperature-controlled ventricular double-circulation washing method based on dynamic pressure feedback according to claim 8 is characterized in that: The step S3 further comprises: Inputting the real-time pressure and the patient's heart rate and respiratory rate into an intracranial pressure prediction model based on an LSTM neural network to perform pressure prediction to obtain a predicted pressure, and updating an intracranial pressure baseline value P_baseline according to the predicted pressure; According to the dynamic adjustment model of the pressure safety interval and the intracranial pressure baseline value P_baseline, the safe intracranial pressure value P_safe is obtained, and its formula is: P_safe=0.8×P_baseline+0.2×P(t); It is determined whether the real-time pressure P(t) is greater than a preset coefficient multiplied by a safe intracranial pressure value P_safe. If so, emergency pressure relief is triggered to regulate the balloon pressure buffer.

10. The intelligent temperature-controlled ventricular double-circulation washing method based on dynamic pressure feedback according to claim 7 is characterized in that: The step S4 comprises: Obtaining a target temperature, setting the heating temperature of the preheater and the heating wire in the temperature-controlled water inlet device according to the target temperature, and regulating the temperature compensation micropump in the temperature-controlled water inlet device based on PID; The temperature is monitored by a temperature sensor to obtain the real-time temperature, and it is determined whether the real-time temperature is greater than the upper temperature limit. If so, the liquid cooling cycle is started. Otherwise, it is determined whether the real-time temperature is less than the lower temperature limit. If so, the emergency heating mode is activated to regulate the temperature control water inlet device.

Images