A flexible ureteroscope sheath with pressure relief function

Abstract

This invention relates to the field of medical device technology and discloses a ureteroscopic flexible sheath with pressure relief function, comprising: a connector tube seat, a sheath tube, a pressure relief module, a flexible endoscope irrigation connector, and a negative pressure connector. The connector tube seat is fitted over the sheath tube, and the interior of the connector tube seat communicates with the sheath tube. The flexible endoscope irrigation connector is fitted over the connector tube seat, and the interior of the connector tube seat communicates with the flexible endoscope irrigation connector. The flexible endoscope irrigation connector is used to connect the flexible endoscope and the irrigation system. The negative pressure connector is fitted over the connector tube seat, and the interior of the connector tube seat communicates with the negative pressure connector. The negative pressure connector is used to connect to a negative pressure suction system. The pressure relief module is fitted over the connector tube seat, and the interior of the connector tube seat communicates with the pressure relief module. The pressure relief module includes a control module and a pressure relief module. The control module is electrically connected to the irrigation system and the negative pressure suction system. The pressure relief module includes a pressure relief body and a valve body, and the valve body and the pressure relief body are rotatably connected. This invention ensures the pressure stability of the ureteroscopic flexible sheath.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a flexible ureteroscope sheath with pressure relief function. Background Technology

[0002] With the development of medical technology, traditional surgery has been replaced by various minimally invasive treatments. Ureteroscopy, as an emerging minimally invasive technique, has advantages such as minimal trauma, rapid recovery, and high stone clearance rate, and is widely used in the treatment of urinary tract stones. In current lithotripsy procedures, the stone powder and hematuria in the renal pelvis are absorbed by the negative pressure device connected to the ureteroscope, allowing the stone fragments to be suctioned out of the body. However, during this process, the ureteroscope may experience excessively rapid infusion or poor reflux, leading to increased pressure in the bladder and renal pelvis. This can cause the capillaries on the bladder surface to rupture, ultimately resulting in postoperative symptoms such as infection, fever, and inflammation.

[0003] Therefore, it is necessary to design a flexible ureteroscope sheath with pressure relief function to solve the problems existing in the current technology. Summary of the Invention

[0004] In view of this, the present invention proposes a ureteroscope sheath with pressure relief function, which aims to solve the above-mentioned problems.

[0005] This invention proposes a flexible ureteroscope sheath with pressure relief function, comprising:

[0006] Connector tube seat, sheath, pressure relief module, flexible endoscope injection connector and negative pressure connector;

[0007] The connector tube seat is fitted with the sheath tube, and the interior of the connector tube seat is in communication with the sheath tube;

[0008] The flexible endoscope infusion connector is sleeved on the connector tube seat, and the interior of the connector tube seat is in communication with the flexible endoscope infusion connector. The flexible endoscope infusion connector is used to connect the flexible endoscope and the infusion system.

[0009] The negative pressure connector is sleeved on the connector tube seat, and the interior of the connector tube seat is in communication with the negative pressure connector. The negative pressure connector is used to connect to the negative pressure suction system.

[0010] The pressure relief module is fitted onto the connector tube seat, and the interior of the connector tube seat is connected to the pressure relief module. The pressure relief module is used to collect the renal pelvis static pressure of the sheath. The pressure relief module includes a control module and a pressure relief module. The control module is electrically connected to the perfusion system and the negative pressure suction system and controls the operation of the perfusion system and the negative pressure suction system.

[0011] The pressure relief module includes a pressure relief body and a valve body. The pressure relief body has a first channel and a second channel. The valve body and the pressure relief body are rotatably connected, and the valve body is in contact with the first channel.

[0012] Furthermore, the control module includes:

[0013] The data acquisition and judgment unit is configured to acquire the renal pelvis static pressure and determine the static pressure difference based on the renal pelvis static pressure, and determine whether to execute a pressure relief strategy based on the static pressure difference.

[0014] The first pressure relief unit is configured to, when it is determined that the pressure relief strategy is to be executed, control the opening of the valve body according to the static pressure difference, determine whether to adjust the opening based on the change of the static pressure difference, obtain the target static pressure difference according to the determination result, and determine whether to execute the comprehensive pressure relief strategy based on the target static pressure difference.

[0015] The second pressure relief unit is configured to, when it is determined that the comprehensive pressure relief strategy will be executed, collect at least five environmental data points and determine the type of environmental deviation based on the five environmental data points, establish a sample dataset based on the type of environmental deviation, construct a pressure Bayesian model based on the sample dataset, and determine the comprehensive pressure relief result.

[0016] Furthermore, when it is determined that the pressure relief strategy should be executed, the opening degree of the valve body is controlled according to the static pressure difference, including:

[0017] Obtain the standard static pressure of the flexible ureteroscope sheath, and determine the static pressure difference between the renal pelvis static pressure and the standard static pressure as the static pressure difference;

[0018] When the static pressure difference is greater than or equal to 200 mm water column, the acquisition and judgment unit determines to execute the pressure relief strategy;

[0019] When the static pressure difference is less than 200 mm water column, the data acquisition and judgment unit determines that the pressure relief strategy will not be executed.

[0020] Furthermore, when controlling the opening degree of the valve body based on the static pressure difference, the method includes:

[0021] The first pressure relief unit is provided with a first static pressure difference and a second static pressure difference, wherein the first static pressure difference is greater than the second static pressure difference;

[0022] If the static pressure difference is greater than or equal to the first static pressure difference, the first pressure relief unit controls the opening degree of the valve body to the first valve body opening degree.

[0023] If the static pressure difference is less than the first static pressure difference and greater than the second static pressure difference, the first pressure relief unit controls the opening degree of the valve body to the second valve body opening degree.

[0024] If the static pressure difference is less than or equal to the second static pressure difference, the first pressure relief unit controls the opening degree of the valve body to the third valve body opening degree.

[0025] Wherein, 0 < third valve body opening < second valve body opening < first valve body opening ≤ 0.8.

[0026] Furthermore, when determining whether to adjust the opening based on the change in the static pressure difference, the following steps are included:

[0027] Obtain the change in static pressure difference per unit time and determine the historical average change in static pressure difference;

[0028] If the change in static pressure difference per unit time is less than the historical average change in static pressure difference, the first pressure relief unit determines to adjust the opening degree.

[0029] If the change in static pressure difference per unit time is greater than or equal to the average historical static pressure difference change, the first pressure relief unit determines that it will not adjust the opening degree and will perform pressure relief at the current opening degree.

[0030] Furthermore, when the first pressure relief unit determines to adjust the opening degree, it includes:

[0031] The average historical static pressure difference change and the static pressure difference change difference per unit time are determined. The first pressure relief unit is set with a first static pressure difference change difference and a second static pressure difference change difference. The first static pressure difference change difference is greater than the second static pressure difference change difference.

[0032] If the static pressure difference change is greater than or equal to the first static pressure difference change, the first pressure relief unit adjusts the opening degree according to the first pressure relief index;

[0033] If the static pressure difference change is less than the first static pressure difference change and greater than the second static pressure difference change, the first pressure relief unit adjusts the opening degree according to the second pressure relief index.

[0034] If the static pressure difference change is less than or equal to the second static pressure difference change, the first pressure relief unit adjusts the opening degree according to the third pressure relief index;

[0035] The pressure relief index ranges from 1 to 1, where 1 < third pressure relief index < second pressure relief index < first pressure relief index. The opening degree is directly proportional to the pressure relief index.

[0036] Furthermore, when obtaining the target static pressure difference based on the judgment result, and determining whether to execute a comprehensive pressure relief strategy based on the target static pressure difference, the process includes:

[0037] If the first pressure relief unit determines that the opening degree needs to be adjusted, then the target static pressure difference after the opening degree is adjusted is determined, and the target static pressure difference is compared with the standard static pressure to determine whether the target static pressure difference is qualified.

[0038] If the target static pressure difference is not up to standard, the first pressure relief unit determines to execute the comprehensive pressure relief strategy;

[0039] If the target static pressure difference is within acceptable limits, the first pressure relief unit determines that the comprehensive pressure relief strategy will not be executed.

[0040] Furthermore, when determining to execute the comprehensive pressure relief strategy, collecting at least five sets of environmental data and determining the type of environmental deviation based on the five sets of environmental data includes:

[0041] The second pressure relief unit constructs a pressure relief environment sequence from five environmental data of the same type and determines the corresponding standard pressure relief environment sequence. Each standard environmental data in the standard pressure relief environment sequence is a standard range for that type.

[0042] If there are environmental data in the pressure relief environment series that are not within the standard range, then the type of the pressure relief environment series is determined as the environmental deviation type.

[0043] Furthermore, when establishing a sample dataset based on the aforementioned environmental deviation type, constructing a pressure Bayesian model based on the sample dataset, and determining the comprehensive pressure relief result, the process includes:

[0044] The second pressure relief unit determines all environmental deviation types and acquires the environmental dataset for each environmental deviation type;

[0045] The entire environment dataset and the runtime dataset are combined to construct the sample dataset, which is then divided into a training set and a test set.

[0046] The model parameters are determined based on the evolutionary algorithm, and a Bayesian neural network model is constructed.

[0047] The Bayesian neural network model is trained based on the training set, and the calibration error is determined by substituting the test set into the trained Bayesian neural network model. The pressure Bayesian model is then determined based on the calibration error.

[0048] The target static pressure difference, the adjusted opening, the operating parameters of the injection system, and the operating parameters of the negative pressure suction system are substituted into the pressure Bayesian model to determine the comprehensive pressure relief result.

[0049] Furthermore, when determining the pressure Bayesian model based on the calibration error, the following steps are included:

[0050] If the calibration error of the current trained Bayesian neural network model is greater than the calibration error of the previous trained Bayesian neural network model, then the loss function is penalized based on the regularization term, and iterative training continues until the calibration error of the trained Bayesian neural network model is less than or equal to the calibration error of the previous trained Bayesian neural network model.

[0051] If the calibration error of the currently trained Bayesian neural network model is less than or equal to the calibration error of the previously trained Bayesian neural network model, then training is stopped, and the currently trained Bayesian neural network model is determined as the stress Bayesian model.

[0052] Compared with the prior art, the beneficial effects of the present invention are as follows: the connector tube seat, sheath tube, flexible endoscope irrigation connector, negative pressure connector and pressure relief module adopt a sleeve connection structure, which ensures the coordinated reliability of flexible endoscope operation, irrigation, negative pressure suction and pressure relief, realizes the input of irrigation fluid, the discharge of stone debris and the dynamic balance of pressure, and creates a clear and stable operating environment for surgery. The flexible endoscope irrigation connector stably connects the flexible endoscope to the irrigation system, ensuring a clear surgical field. The negative pressure connector connects to the negative pressure suction system, which can promptly remove stone powder and hematuria. The pressure relief module collects the renal pelvis static pressure in the sheath in real time to balance pressure changes in the renal pelvis area. Based on the renal pelvis static pressure, the irrigation flow rate and the intensity of negative pressure suction are intelligently adjusted to avoid the risk of bladder capillary rupture caused by a sudden pressure rise due to excessively rapid irrigation / negative pressure mismatch. At the same time, the valve body opens or closes the first channel, ensuring the stability of the renal pelvis static pressure and preventing the rupture of capillaries on the bladder surface due to a sudden pressure rise. This reduces the risk of postoperative infection, fever, and inflammation, and improves the safety and reliability of flexible ureteroscopic surgery. Attached Figure Description

[0053] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0054] Figure 1 This is a schematic diagram of the structure of a flexible ureteroscope sheath with pressure relief function provided in an embodiment of the present invention;

[0055] Figure 2 This is a cross-sectional schematic diagram of the pressure relief module provided in an embodiment of the present invention;

[0056] Figure 3 A functional block diagram of the control module provided in an embodiment of the present invention.

[0057] The components are: 1. Connector tube seat; 2. Sheath tube; 3. Pressure relief module; 4. Flexible endoscope injection connector; 5. Negative pressure connector; 30. Pressure relief body; 31. First channel; 32. Valve body; 33. Second channel. Detailed Implementation

[0058] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0059] See Figure 1-3 As shown in some embodiments of this application, a ureteroscope sheath with pressure relief function includes: a connector seat 1, a sheath 2, a pressure relief module 3, a flexible endoscope irrigation connector 4, and a negative pressure connector 5. The connector seat 1 is fitted over the sheath 2, and the interior of the connector seat 1 communicates with the sheath 2. The flexible endoscope irrigation connector 4 is fitted over the connector seat 1, and the interior of the connector seat 1 communicates with the flexible endoscope irrigation connector 4. The flexible endoscope irrigation connector 4 is used to connect the flexible endoscope and the irrigation system. The negative pressure connector 5 is fitted over the connector seat 1, and the interior of the connector seat 1 communicates with the negative pressure connector 5. The negative pressure connector 5 is used to connect... The negative pressure suction system is connected, and the pressure relief module 3 is fitted with a connector tube seat 1. The interior of the connector tube seat 1 is connected to the pressure relief module 3. The pressure relief module 3 is used to collect the renal pelvis static pressure of the sheath 2. The pressure relief module 3 includes a control module and a pressure relief module. The control module is electrically connected to the perfusion system and the negative pressure suction system and controls the operation of the perfusion system and the negative pressure suction system. The pressure relief module includes a pressure relief body 30 and a valve body 32. The pressure relief body 30 has a first channel 31 and a second channel 33. The valve body 32 and the pressure relief body 30 are rotatably connected, and the valve body 32 fits into the first channel 31.

[0060] Specifically, the connector tube seat 1 is the core connecting component, and it forms an interconnected whole with other components. The sheath tube 2 is fitted onto the connector tube seat 1. The sheath tube 2, as a component extending into the patient's body (renal pelvis region), allows the fluid (perfusion fluid, etc.) inside to flow freely through the internal channels of the connector tube seat 1, thus providing a basic pathway for perfusion, suction, and pressure transmission. The flexible endoscope perfusion connector 4 is fitted onto the connector tube seat 1. The flexible endoscope perfusion connector 4 connects the flexible endoscope and the perfusion system simultaneously, allowing the fluid from the perfusion system to flow through the flexible endoscope perfusion connector 4 and the connector tube seat 1 into the sheath tube 2, providing perfusion fluid to the renal pelvis region during surgery. Simultaneously, the flexible endoscope perfusion... Connector 4 provides a relatively stable liquid environment for flexible endoscopy, ensuring the endoscope accurately reaches the stone location and performs lithotripsy. Negative pressure connector 5 is fitted onto the other port of connector tube 1, connecting to a negative pressure suction system, such as a vacuum device. When the negative pressure suction system is activated, the negative pressure inside sheath 2 is transmitted through connector tube 1, thereby expelling the mixture of lithotripsy powder, hematuria, and other substances from the renal pelvis through sheath 2, connector tube 1, and negative pressure connector 5. Pressure relief module 3 is fitted onto the other port of connector tube 1. The pressure inside sheath 2 can be transmitted to pressure relief module 3 through connector tube 1, allowing pressure relief module 3 to collect real-time renal pelvis static pressure to avoid the risk of excessive renal pelvis static pressure. The pressure relief module 3 includes a control module and a pressure relief module. The control module is electrically connected to the perfusion system and the negative pressure suction system. The control module controls the perfusion rate of the perfusion system and the suction force of the negative pressure suction system based on the real-time collected renal pelvis static pressure. The pressure relief module consists of a pressure relief body 30 and a valve body 32. The pressure relief body 30 has a first channel 31 and a second channel 33. The valve body 32 is rotatably connected to the pressure relief body 30. Under normal conditions, the valve body 32 is tightly fitted with the first channel 31 to close the channel. The connector tube seat 1 integrates the sheath tube 2, the flexible endoscope perfusion connector 4, the negative pressure connector 5, and the pressure relief module 3 into an interconnected structure, which organically combines perfusion, suction, pressure monitoring and control, realizing the input of perfusion fluid, the discharge of stone debris, and the dynamic balance of pressure, creating a clear and stable operating environment for surgery.

[0061] Understandably, the control module adjusts the perfusion system and negative pressure suction system in real time based on the collected renal pelvis static pressure, reducing the possibility of damage to the bladder and renal pelvis due to excessive pressure. At the same time, through the action of valve body 32, the first channel 31 is opened or closed, ensuring the stability of renal pelvis static pressure and preventing the rupture of capillaries on the bladder surface caused by a sudden increase in pressure. This reduces the risk of postoperative infection, fever, and inflammation, and improves the safety and reliability of ureteroscopic surgery.

[0062] In some embodiments of this application, the control module includes: a data acquisition and judgment unit configured to acquire renal pelvis static pressure and determine static pressure difference based on renal pelvis static pressure, and determine whether to execute a pressure relief strategy based on the static pressure difference; a first pressure relief unit configured to control the opening of valve body 32 based on static pressure difference when it is determined to execute a pressure relief strategy, and determine whether to adjust the opening based on the change in static pressure difference, and obtain the target static pressure difference based on the judgment result, and determine whether to execute a comprehensive pressure relief strategy based on the target static pressure difference; and a second pressure relief unit configured to acquire at least five environmental data points and determine the type of environmental deviation based on the five environmental data points when it is determined to execute a comprehensive pressure relief strategy, and establish a sample dataset based on the type of environmental deviation, construct a pressure Bayesian model based on the sample dataset, and determine the comprehensive pressure relief result.

[0063] Specifically, the acquisition and judgment unit is responsible for acquiring the renal pelvis static pressure in real time and determining the static pressure difference by comparing it with the normal pressure. The static pressure difference is used to determine whether to execute a pressure relief strategy. This avoids ineffective pressure relief when the pressure is normal and allows for timely response in the early stages of pressure abnormalities, providing initial judgment data for subsequent control. When the acquisition and judgment unit determines to execute the pressure relief strategy, the first pressure relief unit controls the opening of valve 32 based on the magnitude of the static pressure difference. The larger the static pressure difference, the larger the opening of valve 32, to quickly release excess pressure in the renal pelvis area. Simultaneously, it continuously monitors changes in the static pressure difference and judges whether the opening of valve 32 needs further adjustment based on the trend, preventing the risk that the change in static pressure difference will not achieve the expected effect. After adjustment, the target static pressure difference is obtained. The target static pressure difference is the static pressure difference after adjusting the opening of valve 32. While adjusting the opening of valve 32 can alleviate the pressure in the renal pelvis area to a certain extent, it may still not reach the normal standard pressure range. The target static pressure difference serves as a benchmark to determine whether to implement a comprehensive pressure relief strategy. This strategy involves a comprehensive adjustment of the perfusion rate of the perfusion system, the suction force of the negative pressure suction system, and the valve opening at 32 degrees. This addresses pressure issues caused by the combined effects of perfusion and negative pressure, ensuring targeted responses to different pressure scenarios. When the comprehensive pressure relief strategy is implemented in the second pressure relief unit, at least five sets of environmental data (covering perfusion flow rate and negative pressure suction, etc.) are collected. These environmental data are used to determine the types of environmental deviations, such as perfusion deviations and negative pressure suction deviations. A sample dataset is then established based on these environmental deviation types. This dataset includes data on the changing patterns and the effectiveness of control measures under various past conditions. A pressure Bayesian model is constructed using this sample dataset. Probabilistic inference is then performed using the pressure Bayesian model to ultimately determine a comprehensive pressure relief result: a coordinated scheme that simultaneously controls the perfusion system, the negative pressure suction system, and the valve opening at 32 degrees. This improves the safety and reliability of ureteroscopic surgery.

[0064] In some embodiments of this application, when it is determined that a pressure relief strategy should be executed, the opening degree of the valve body 32 is controlled according to the static pressure difference, including: acquiring the standard static pressure of the ureteroscope sheath, and determining the static pressure difference between the renal pelvis static pressure and the standard static pressure as the static pressure difference; when the static pressure difference is greater than or equal to 200 mmH2O, the acquisition and judgment unit determines that the pressure relief strategy should be executed; when the static pressure difference is less than 200 mmH2O, the acquisition and judgment unit determines that the pressure relief strategy should not be executed.

[0065] Specifically, by obtaining the standard static pressure of the ureteroscope sheath, a clear and unified pressure reference benchmark is provided for determining whether to implement a pressure relief strategy. This ensures that pressure judgments are made within a reasonable range required for surgical safety. The standard static pressure is determined by testing the ureteroscope sheath and the patient in an experimental environment. The standard static pressure reflects the normal pressure level in the renal pelvis region. The difference between the renal pelvis static pressure and the standard static pressure is defined as the static pressure difference. The static pressure difference directly reflects the degree to which the pressure in the renal pelvis region deviates from the normal range, providing a quantitative indicator for determining whether to implement a pressure relief strategy. This allows pressure regulation to be based on objective pressure deviation rather than subjective experience, thus improving the reliability of regulation. When the static pressure difference is greater than or equal to 200 mmH2O, it indicates that the pressure in the renal pelvis region will cause continuous compression of the bladder and renal pelvis tissues, increasing the probability of capillary rupture on the bladder surface. Therefore, a pressure relief strategy is implemented. When the static pressure difference is less than 200 mmH2O, it indicates that the pressure in the renal pelvis region is maintained at a stable level and will not cause continuous compression of the bladder and renal pelvis tissues. In this case, it is determined that the pressure relief strategy is not implemented, and the surgery can continue under the current conditions. The data acquisition and judgment unit achieves a dynamic balance between ensuring normal surgical perfusion needs and timely prevention of pressure risks. It does not affect the basic conditions required for surgery, and can effectively avoid safety hazards, improving the safety, stability, and reliability of ureteroscopic surgery, and providing strong support for rapid postoperative recovery.

[0066] In some embodiments of this application, when controlling the opening degree of valve body 32 according to static pressure difference, the method includes: a first pressure relief unit sets a first static pressure difference and a second static pressure difference, wherein the first static pressure difference is greater than the second static pressure difference; if the static pressure difference is greater than or equal to the first static pressure difference, the first pressure relief unit controls the opening degree of valve body 32 to be the first valve body opening degree; if the static pressure difference is less than the first static pressure difference but greater than the second static pressure difference, the first pressure relief unit controls the opening degree of valve body 32 to be the second valve body opening degree; and if the static pressure difference is less than or equal to the second static pressure difference, the first pressure relief unit controls the opening degree of valve body 32 to be the third valve body opening degree, wherein 0 < third valve body opening degree < second valve body opening degree < first valve body opening degree ≤ 0.8.

[0067] Specifically, the first pressure relief unit establishes multi-level pressure judgment intervals by setting a first static pressure difference and a second static pressure difference, achieving precise step-by-step control of the valve body 32 opening. This avoids the risk that a single opening control cannot adapt to different pressure deviations. When the static pressure difference is greater than or equal to the first static pressure difference, it indicates that the pressure in the renal pelvis region is too high. In this case, the valve body 32 is controlled to use the maximum first valve body opening to release excess pressure as quickly as possible, thereby rapidly curbing the pressure situation in the renal pelvis and preventing sudden compression of the bladder and renal pelvis tissues due to excessive pressure, thus minimizing the risk of capillary rupture on the bladder surface. When the static pressure difference is less than the first static pressure difference but greater than the second static pressure difference, it indicates that the pressure in the renal pelvis region is moderate, and the second valve body opening is used. The opening of valve body 32 effectively releases pressure, allowing it to gradually decrease, while preventing a sudden drop in pressure due to excessive opening, thus ensuring the stability of the surgery. If the static pressure difference is less than or equal to the second static pressure difference, it indicates that the pressure in the renal pelvis region is relatively low, but it still deviates from the standard to a certain extent. In this case, the minimum opening of the third valve body is used to achieve micro-pressure release, ensuring the pressure stability of the renal pelvis region. The graded control method matches the opening of valve body 32 with the magnitude of the static pressure difference, ensuring both rapid pressure release under high pressure conditions and pressure stability and surgical reliability under medium and low pressure conditions. This improves the precision of pressure control, ensures the safety of ureteroscopic surgery, and further reduces the risk of postoperative complications.

[0068] In some embodiments of this application, when determining whether to adjust the opening based on the change in static pressure difference, the method includes: obtaining the change value of static pressure difference per unit time and determining the historical average change value of static pressure difference; if the change value of static pressure difference per unit time is less than the historical average change value of static pressure difference, the first pressure relief unit determines to adjust the opening; if the change value of static pressure difference per unit time is greater than or equal to the historical average change value of static pressure difference, the first pressure relief unit determines not to adjust the opening and performs pressure relief at the current opening.

[0069] In some embodiments of this application, when the first pressure relief unit determines to adjust the opening degree, it includes: determining the average historical static pressure difference change and the static pressure difference change difference value per unit time; the first pressure relief unit sets a first static pressure difference change value and a second static pressure difference change value; the first static pressure difference change value is greater than the second static pressure difference change value; if the static pressure difference change value is greater than or equal to the first static pressure difference change value, the first pressure relief unit adjusts the opening degree according to a first pressure relief index; if the static pressure difference change value is less than the first static pressure difference change value but greater than the second static pressure difference change value, the first pressure relief unit adjusts the opening degree according to a second pressure relief index; if the static pressure difference change value is less than or equal to the second static pressure difference change value, the first pressure relief unit adjusts the opening degree according to a third pressure relief index. The pressure relief index ranges from 1 to 1, where 1 < the third pressure relief index < the second pressure relief index < the first pressure relief index, and the opening degree is directly proportional to the pressure relief index.

[0070] Specifically, by comparing the change in static pressure difference per unit time with the historical average change in static pressure difference, the first pressure relief unit is provided with a judgment basis based on historical control experience. This allows for accurate identification of whether the pressure relief effect of the current valve body opening of 32 degrees meets expectations. When the change in static pressure difference per unit time is less than the historical average change in static pressure difference, it indicates that the pressure relief efficiency of the current opening is insufficient, and the opening is adjusted to avoid the risk of prolonged high renal pelvis static pressure due to excessively slow pressure relief. Conversely, when the change in static pressure difference per unit time is greater than or equal to the historical average change in static pressure difference, it indicates that the pressure relief efficiency of the current opening meets the expected pressure relief requirements, and the opening is not adjusted to avoid unnecessary opening changes that could interfere with the stable decrease of renal pelvis pressure, thus ensuring the stability of the pressure relief process. Based on this, the static pressure difference difference between the historical average static pressure difference change and the static pressure difference change per unit time is determined. The static pressure difference difference is calculated by subtracting the static pressure difference change per unit time from the historical average static pressure difference change. Different levels of static pressure difference difference and corresponding pressure relief indices are set, achieving refined grading of opening adjustment. The static pressure difference difference reflects the degree of deviation between pressure relief and expectation. When the static pressure difference difference is large, the largest first pressure relief index is used to adjust the opening to quickly improve pressure relief efficiency, thereby narrowing the gap between the actual pressure relief effect and the expectation. When the static pressure difference difference is at a medium level, the second pressure relief index is used for adjustment, improving pressure relief efficiency while taking into account pressure stability and avoiding drastic pressure fluctuations caused by sudden changes in opening. When the static pressure difference difference is small, the third pressure relief index is used to fine-tune the opening, thereby accurately optimizing the pressure relief effect. The opening degree is directly proportional to the pressure relief index. Assuming the pressure relief index (the third pressure relief index, the second pressure relief index, or the first pressure relief index) is Q and the opening degree is F, the adjusted opening degree is determined to be Q*F. By establishing the direct proportional relationship between the opening degree and the pressure relief index, precise control of the renal pelvis pressure is achieved. It should be noted that the adjusted opening degree is less than 1.

[0071] In some embodiments of this application, when obtaining the target static pressure difference based on the determination result and determining whether to execute the comprehensive pressure relief strategy based on the target static pressure difference, the process includes: if the first pressure relief unit determines to adjust the opening degree, then determining the target static pressure difference after adjusting the opening degree, and comparing the target static pressure difference with the standard static pressure to determine whether the target static pressure difference is qualified; if the target static pressure difference is not qualified, the first pressure relief unit determines to execute the comprehensive pressure relief strategy; if the target static pressure difference is qualified, the first pressure relief unit determines not to execute the comprehensive pressure relief strategy.

[0072] Specifically, the target static pressure difference is the difference between the renal pelvis static pressure after the valve opening is adjusted and the standard static pressure. The qualification of the target static pressure difference is still compared with 200 mmH2O. When the target static pressure difference is greater than or equal to 200 mmH2O, it means that the pressure in the renal pelvis area will still cause continuous compression on the bladder and renal pelvis tissue. The adjustment of valve body 32 alone cannot solve the current pressure problem. There may be a combination of factors such as perfusion and negative pressure. In this case, the target static pressure difference is determined to be unqualified, and a comprehensive pressure relief strategy is implemented. When the target static pressure difference is less than 200 mmH2O, it means that after adjusting the opening of valve body 32, the pressure in the renal pelvis area has returned to the normal level. In this case, the target static pressure difference is determined to be qualified, and the comprehensive pressure relief strategy is not implemented. This achieves a balance between the precision and flexibility of pressure control, further ensuring the safety of ureteroscopic surgery.

[0073] In some embodiments of this application, when it is determined that a comprehensive pressure relief strategy is to be executed, collecting at least five environmental data points and determining the type of environmental deviation based on the five environmental data points includes: the second pressure relief unit constructs a pressure relief environmental sequence from the five environmental data points of the same type, and determines the corresponding standard pressure relief environmental sequence. Each standard environmental data point in the standard pressure relief environmental sequence is a standard range for that type. If there is environmental data in the pressure relief environmental sequence that is not within the standard range, then the type of the pressure relief environmental sequence is determined as the type of environmental deviation.

[0074] Specifically, the environmental data covers aspects such as infusion flow rate and negative pressure suction. Infusion flow rate represents one type, and negative pressure suction represents another. The second pressure relief unit constructs a pressure relief environmental series from five environmental data points of the same type. This effectively avoids the random errors that may exist in single environmental data collection, making the collected environmental data more representative and reliable. This provides accurate data support for subsequent judgment of environmental deviation types. At the same time, a corresponding standard pressure relief environmental series is determined. Each standard environmental data point in the standard pressure relief environmental series represents the standard range for that type. The standard range can be determined through the manufacturer's instructions for the corresponding equipment and experiments. This provides a clear and unified reference for judging the rationality of environmental data. When environmental data in the depressurization environmental data series is outside the standard range, the type of the depressurization environmental data series is determined as the environmental deviation type. For example, if environmental data in the depressurization environmental data series of perfusion flow rate is outside the standard range, then the perfusion flow rate type is determined as the environmental deviation type. Based on the comparison between the depressurization environmental data series and the standard depressurization environmental data series, it is possible to accurately locate which type of environmental data is abnormal, thereby realizing the targeted identification of environmental deviations in surgery and laying the foundation for the subsequent establishment of sample datasets based on environmental deviation types.

[0075] In some embodiments of this application, when establishing a sample dataset based on environmental deviation types, constructing a pressure Bayesian model based on the sample dataset, and determining the comprehensive pressure relief result, the process includes: the second pressure relief unit determining all environmental deviation types and obtaining environmental datasets for each environmental deviation type; constructing a sample dataset by combining all environmental datasets and the operational dataset; dividing the sample dataset into a training set and a test set; determining model building parameters based on an evolutionary algorithm and constructing a Bayesian neural network model; training the Bayesian neural network model based on the training set; substituting the test set into the trained Bayesian neural network model to determine the calibration error; determining the pressure Bayesian model based on the calibration error; and substituting the target static pressure difference, the adjusted opening, the operational parameters of the injection system, and the operational parameters of the negative pressure suction system into the pressure Bayesian model to determine the comprehensive pressure relief result.

[0076] In some embodiments of this application, when determining the stress Bayesian model based on the calibration error, the process includes: if the calibration error of the currently trained Bayesian neural network model is greater than the calibration error of the previously trained Bayesian neural network model, then the loss function is penalized based on the regularization term, and iterative training continues until the calibration error of the trained Bayesian neural network model is less than or equal to the calibration error of the previously trained Bayesian neural network model; if the calibration error of the currently trained Bayesian neural network model is less than or equal to the calibration error of the previously trained Bayesian neural network model, then training is stopped, and the currently trained Bayesian neural network model is determined as the stress Bayesian model.

[0077] Specifically, an environmental dataset is acquired for each type of environmental deviation. This dataset contains various relevant data for that type of deviation. For example, the environmental dataset for the perfusion flow rate deviation includes the fluctuation amplitude and duration of the deviation, the type of perfusion fluid, and its corresponding physical properties (such as viscosity and temperature). This data comprehensively records the specific situation of this environmental deviation type during surgery from the dimensions of actual perfusion flow rate performance, medium characteristics, and associated pressure changes. A sample dataset is constructed by combining all environmental deviation types with the runtime dataset. The runtime dataset includes data such as the operating power of the perfusion pump in the perfusion system, the operating power of the vacuum pump in the negative pressure suction system, and the adjustment of the valve opening at different times. This comprehensive sample dataset allows the model to fully learn the pressure regulation rules under different combinations of environmental deviations, ensuring the model's adaptability to complex surgical scenarios. The sample dataset is divided into training and testing sets, typically in a 3:2 ratio, to ensure the model's generalization ability. Furthermore, while learning the rules in the training set, the model verifies its generalization ability through the testing set, preventing the model from failing in real-world applications due to only adapting to the training data. Evolutionary algorithms are characterized by their efficient search for optimal solutions. Using them to determine model parameters avoids the subjectivity of manually setting parameters, thus improving the reliability of Bayesian neural network model construction. Bayesian neural network models are machine learning models that combine Bayesian theory with neural networks. Unlike traditional neural network models, Bayesian neural network models treat parameters such as weights and biases in the neural network as random variables and assign probability distributions (i.e., prior distributions) to these parameters. During model training, it combines the input data of the training set with Bayesian inference to obtain the posterior distribution by updating the probability distribution of parameters, thereby quantifying the uncertainty of the parameters. Then, the test set is substituted into the trained Bayesian neural network model to determine the calibration error. During training, model accuracy may decrease. By comparing the current calibration error with the previous one, training biases can be detected in a timely manner. Through iterative training with regularization penalties, overfitting is suppressed, forcing the model to learn the essential pressure regulation rules to ensure continuous optimization of model accuracy. If the calibration error of the currently trained Bayesian neural network model is less than or equal to the calibration error of the previously trained Bayesian neural network model, then the prediction error of the model is considered to be gradually decreasing or tending to a stable state. Training can then be stopped, and the currently trained Bayesian neural network model is determined as a pressure Bayesian model. The target static pressure difference, the adjusted opening, the operating parameters of the perfusion system (perfusion flow rate data), and the operating parameters of the negative pressure suction system (negative pressure suction data) are substituted into the pressure Bayesian model to determine the comprehensive pressure relief result. The comprehensive pressure relief result is the combined output result of the valve body 32 opening, perfusion flow rate, and negative pressure suction, ensuring the reliability of coordinated pressure regulation, thereby ensuring the pressure stability of the renal pelvis region and reducing the risk of capillary rupture on the bladder surface.

[0078] In summary, the beneficial effects of this invention are as follows: the connector tube seat, sheath, flexible endoscope irrigation connector, negative pressure connector and pressure relief module adopt a nested connection structure, which ensures the coordinated reliability of flexible endoscope operation, irrigation, negative pressure suction and pressure relief, realizes the input of irrigation fluid, the discharge of stone debris and the dynamic balance of pressure, and creates a clear and stable operating environment for surgery. The flexible endoscope irrigation connector stably connects the flexible endoscope to the irrigation system, ensuring a clear surgical field. The negative pressure connector connects to the negative pressure suction system, which can promptly remove stone powder and hematuria. The pressure relief module collects the renal pelvis static pressure in the sheath in real time to balance pressure changes in the renal pelvis area. Based on the renal pelvis static pressure, the irrigation flow rate and the intensity of negative pressure suction are intelligently adjusted to avoid the risk of bladder capillary rupture caused by a sudden pressure rise due to excessively rapid irrigation / negative pressure mismatch. At the same time, the valve body opens or closes the first channel, ensuring the stability of the renal pelvis static pressure and preventing the rupture of capillaries on the bladder surface due to a sudden pressure rise. This reduces the risk of postoperative infection, fever, and inflammation, and improves the safety and reliability of flexible ureteroscopic surgery.

[0079] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program goods. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program goods embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0080] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program goods according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0081] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0082] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A flexible ureteroscope sheath with pressure relief function, characterized in that, include: Connector tube seat, sheath, pressure relief module, flexible endoscope injection connector and negative pressure connector; The connector tube seat is fitted with the sheath tube, and the interior of the connector tube seat is in communication with the sheath tube; The flexible endoscope infusion connector is sleeved on the connector tube seat, and the interior of the connector tube seat is in communication with the flexible endoscope infusion connector. The flexible endoscope infusion connector is used to connect the flexible endoscope and the infusion system. The negative pressure connector is sleeved on the connector tube seat, and the interior of the connector tube seat is in communication with the negative pressure connector. The negative pressure connector is used to connect to the negative pressure suction system. The pressure relief module is fitted onto the connector tube seat, and the interior of the connector tube seat is connected to the pressure relief module. The pressure relief module is used to collect the renal pelvis static pressure of the sheath. The pressure relief module includes a control module and a pressure relief module. The control module is electrically connected to the perfusion system and the negative pressure suction system and controls the operation of the perfusion system and the negative pressure suction system. The pressure relief module includes a pressure relief body and a valve body. The pressure relief body has a first channel and a second channel. The valve body and the pressure relief body are rotatably connected, and the valve body is fitted with the first channel. The control module includes: The data acquisition and judgment unit is configured to acquire the renal pelvis static pressure and determine the static pressure difference based on the renal pelvis static pressure, and determine whether to execute a pressure relief strategy based on the static pressure difference. The first pressure relief unit is configured to, when it is determined that the pressure relief strategy is to be executed, control the opening of the valve body according to the static pressure difference, determine whether to adjust the opening based on the change of the static pressure difference, obtain the target static pressure difference according to the determination result, and determine whether to execute the comprehensive pressure relief strategy based on the target static pressure difference. The second pressure relief unit is configured to, when it is determined that the comprehensive pressure relief strategy should be executed, collect at least five sets of environmental data and determine the type of environmental deviation based on the five sets of environmental data, establish a sample dataset based on the type of environmental deviation, construct a pressure Bayesian model based on the sample dataset, and determine the comprehensive pressure relief result; When it is determined that the comprehensive pressure relief strategy should be implemented, at least five sets of environmental data should be collected and the type of environmental deviation should be determined based on the five sets of environmental data, including: The second pressure relief unit constructs a pressure relief environment sequence from five environmental data of the same type and determines the corresponding standard pressure relief environment sequence. Each standard environmental data in the standard pressure relief environment sequence is a standard range for that type. If there are environmental data in the pressure relief environment series that are not within the standard range, then the type of the pressure relief environment series is determined as the environmental deviation type.

2. The ureteroscope sheath with pressure relief function according to claim 1, characterized in that, When it is determined that the pressure relief strategy should be executed, the opening degree of the valve body is controlled according to the static pressure difference, including: Obtain the standard static pressure of the flexible ureteroscope sheath, and determine the static pressure difference between the renal pelvis static pressure and the standard static pressure as the static pressure difference; When the static pressure difference is greater than or equal to 200 mm water column, the acquisition and judgment unit determines to execute the pressure relief strategy; When the static pressure difference is less than 200 mm water column, the data acquisition and judgment unit determines that the pressure relief strategy will not be executed.

3. The ureteroscope sheath with pressure relief function according to claim 2, characterized in that, When controlling the opening degree of the valve body based on the static pressure difference, the following are included: The first pressure relief unit is provided with a first static pressure difference and a second static pressure difference, wherein the first static pressure difference is greater than the second static pressure difference; If the static pressure difference is greater than or equal to the first static pressure difference, the first pressure relief unit controls the opening degree of the valve body to the first valve body opening degree. If the static pressure difference is less than the first static pressure difference and greater than the second static pressure difference, the first pressure relief unit controls the opening degree of the valve body to be the second valve body opening degree. If the static pressure difference is less than or equal to the second static pressure difference, the first pressure relief unit controls the opening degree of the valve body to the third valve body opening degree. Wherein, 0 < third valve body opening < second valve body opening < first valve body opening ≤ 0.

8.

4. The ureteroscope sheath with pressure relief function according to claim 3, characterized in that, When determining whether to adjust the opening based on the change in the static pressure difference, the following steps are included: Obtain the change in static pressure difference per unit time and determine the historical average change in static pressure difference; If the change in static pressure difference per unit time is less than the historical average change in static pressure difference, the first pressure relief unit determines to adjust the opening degree. If the change in static pressure difference per unit time is greater than or equal to the average historical static pressure difference change, the first pressure relief unit determines that it will not adjust the opening degree and will perform pressure relief at the current opening degree.

5. The ureteroscope sheath with pressure relief function according to claim 4, characterized in that, When the first pressure relief unit determines that the opening degree needs to be adjusted, it includes: The average historical static pressure difference change and the static pressure difference change difference per unit time are determined. The first pressure relief unit is set with a first static pressure difference change difference and a second static pressure difference change difference. The first static pressure difference change difference is greater than the second static pressure difference change difference. If the static pressure difference change is greater than or equal to the first static pressure difference change, the first pressure relief unit adjusts the opening degree according to the first pressure relief index; If the static pressure difference change is less than the first static pressure difference change and greater than the second static pressure difference change, the first pressure relief unit adjusts the opening degree according to the second pressure relief index. If the static pressure difference change is less than or equal to the second static pressure difference change, the first pressure relief unit adjusts the opening degree according to the third pressure relief index; The pressure relief index ranges from 1 to 1, where 1 < third pressure relief index < second pressure relief index < first pressure relief index. The opening degree is directly proportional to the pressure relief index.

6. The ureteroscope sheath with pressure relief function according to claim 5, characterized in that, When obtaining the target static pressure difference based on the judgment result, and determining whether to implement a comprehensive pressure relief strategy based on the target static pressure difference, the process includes: If the first pressure relief unit determines that the opening degree needs to be adjusted, then the target static pressure difference after the opening degree is adjusted is determined, and the target static pressure difference is compared with the standard static pressure to determine whether the target static pressure difference is qualified. If the target static pressure difference is not up to standard, the first pressure relief unit determines to execute the comprehensive pressure relief strategy; If the target static pressure difference is within acceptable limits, the first pressure relief unit determines that the comprehensive pressure relief strategy will not be executed.

7. The ureteroscope sheath with pressure relief function according to claim 6, characterized in that, When establishing a sample dataset based on the aforementioned environmental deviation type, constructing a pressure Bayesian model based on the sample dataset, and determining the comprehensive pressure relief result, the process includes: The second pressure relief unit determines all environmental deviation types and acquires the environmental dataset for each environmental deviation type; The entire environment dataset and the runtime dataset are combined to form the sample dataset, which is then divided into a training set and a test set. The model parameters are determined based on the evolutionary algorithm, and a Bayesian neural network model is constructed. The Bayesian neural network model is trained based on the training set, and the calibration error is determined by substituting the test set into the trained Bayesian neural network model. The pressure Bayesian model is then determined based on the calibration error. The target static pressure difference, the adjusted opening, the operating parameters of the injection system, and the operating parameters of the negative pressure suction system are substituted into the pressure Bayesian model to determine the comprehensive pressure relief result.

8. The ureteroscope sheath with pressure relief function according to claim 7, characterized in that, When determining the pressure Bayesian model based on the calibration error, the following steps are included: If the calibration error of the current trained Bayesian neural network model is greater than the calibration error of the previous trained Bayesian neural network model, then the loss function is penalized based on the regularization term, and iterative training continues until the calibration error of the trained Bayesian neural network model is less than or equal to the calibration error of the previous trained Bayesian neural network model. If the calibration error of the currently trained Bayesian neural network model is less than or equal to the calibration error of the previously trained Bayesian neural network model, then training is stopped, and the currently trained Bayesian neural network model is determined as the stress Bayesian model.

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