Pressure measuring and controlling endoscope, matched accessory and pressure controlling method

Abstract

The invention discloses a pressure measuring and controlling endoscope, a matched accessory and a pressure controlling method, and belongs to the technical field of medical instruments. The pressure regulating valve assembly is arranged on the endoscope main body and is used for regulating the sectional area of the fluid channel; the head end sensor is arranged at the head end of the endoscope main body and is used for detecting the pressure of a target part; the infusion tube is arranged on the endoscope main body and is used for connecting an external pipeline; the main control chip is electrically connected with the pressure regulating valve assembly and the head end sensor and used for controlling the working state of the pressure regulating valve assembly according to a detection signal of the head end sensor; pressure is detected in real time through the head end sensor and fed back to the main control chip, and the main control chip drives the pressure adjusting valve element to move so as to adjust the sectional area of the fluid channel. The pressure adjusting function is directly built in the endoscope body, and automatic closed-loop control over intracavity pressure can be achieved without depending on external special equipment.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a pressure measuring and controlling endoscope, matching accessories, and pressure control method. Background Technology

[0002] Medical endoscopes, as an important tool in modern minimally invasive surgery, have been widely used in many clinical fields such as urology and gastroenterology. They enter the body through natural cavities or tiny incisions, providing doctors with intuitive visual images to assist in diagnosis and treatment. Maintaining appropriate intracavitary pressure is crucial during endoscopic surgery. Excessive pressure may lead to tissue damage or patient discomfort, while insufficient pressure will affect the clarity of the surgical field and the operating space. Therefore, real-time monitoring and precise control of intracavitary pressure are key to ensuring surgical safety and effectiveness. Currently, most clinically used endoscopic systems only have pressure monitoring functions, that is, they detect intracavitary pressure values ​​in real time through sensors integrated into the endoscope tip and display them on an external monitor.

[0003] However, existing endoscopes do not have the ability to automatically adjust pressure. When the pressure exceeds the preset range during the operation, doctors need to rely on external special pressure control devices to adjust the infusion flow rate or pressure in order to stabilize the intracavitary pressure. These external pressure control devices are usually complex in structure, expensive, and require additional connecting tubing and power support, which not only increases the preparation time and complexity of the operation, but also increases the equipment procurement and maintenance costs of medical institutions.

[0004] In addition, since the existing endoscope and pressure control equipment are designed separately, pressure fluctuations can easily occur when changing infusion bags or adjusting pressure sources during surgery, which may affect the continuity and stability of the surgery. The use of external devices also limits the portability and integration of the endoscope system, making it difficult to deploy and apply it quickly in some medical scenarios. Summary of the Invention

[0005] This invention overcomes the shortcomings of the prior art and provides a pressure measuring and control endoscope, matching accessories, and pressure control method.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a pressure-measuring and pressure-controlling endoscope and its supporting accessories, comprising: Endoscope body; A pressure regulating valve assembly, disposed on the endoscope body, is used to adjust the cross-sectional area of ​​the fluid channel; A head-end sensor, located at the head end of the endoscope body, is used to detect pressure at the target site; An infusion tube, mounted on the endoscope body, is used to connect to external tubing; The main control chip is electrically connected to the pressure regulating valve assembly and the head end sensor respectively, and is used to control the working state of the pressure regulating valve assembly according to the detection signal of the head end sensor; And a pressurizing mechanism, which, under the control of the main control chip, provides an auxiliary pressure source when the pressure regulation capability of the endoscope body is insufficient, and achieves seamless switching of the infusion bag to maintain the continuous stability of the system pressure.

[0007] In a preferred embodiment of the present invention, a wireless module, an LED light, and a host connection cable are disposed inside the endoscope body, and the LED light and the wireless module are electrically connected to the main control chip.

[0008] In a preferred embodiment of the present invention, the pressure regulating valve assembly includes a pressure regulating valve seat having an infusion inlet and an infusion outlet, a pressure regulating valve core disposed within the pressure regulating valve seat, a motor stator, and a motor rotor connected to the pressure regulating valve core.

[0009] In a preferred embodiment of the present invention, the motor rotor includes a wheel and an external thread, and the pressure regulating valve core is provided with an internal thread that meshes with the external thread.

[0010] In a preferred embodiment of the present invention, the inner wall of the pressure regulating valve seat is provided with a guide groove, and the outer wall of the pressure regulating valve core is provided with a guide boss that cooperates with the guide groove.

[0011] In a preferred embodiment of the present invention, the end of the pressure regulating valve core is provided with an elastic head; the inner wall of the pressure regulating valve seat is provided with a plurality of sealing grooves, and a sealing ring is provided in the sealing groove.

[0012] In a preferred embodiment of the present invention, the pressure regulating valve seat is provided with a mounting hole, and a valve seat pressure sensor is disposed in the mounting hole. The valve seat pressure sensor is connected to the main control chip via signal.

[0013] In a preferred embodiment of the present invention, the pressurization mechanism includes: Medical infusion stents; A pressurization assembly, disposed on the medical infusion stand, is used to fix and compress the medical infusion bag to provide pressure; A delivery assembly, detachably connected to the pressurization assembly, is used to form a dual-channel infusion system; The delivery assembly includes a two-way pipe, both ends of which are provided with tapered heads. A one-way valve is sleeved between the three-way pipe and the tapered heads. The other end of the three-way pipe is connected to an infusion outlet pipe.

[0014] In a preferred embodiment of the present invention, the pressurization assembly includes a pressurization airbag connected to a conical head. The top of the pressurization airbag is provided with a safety valve, a short hook and a long hook, and the bottom of the pressurization airbag is provided with a gravity switch. A three-way pipe is provided between the gravity switches, and an air pump is provided at the other end of the three-way pipe.

[0015] Secondly, the present invention provides a pressure control method for a pressure-measuring and pressure-controlling endoscope and its accessories, comprising the following steps: S1. The main control chip continuously acquires the pressure signal of the target part detected in real time by the head end sensor, compares the pressure signal with the preset safe pressure range, and generates corresponding control decisions based on the comparison results. S2. When the pressure signal deviates from the preset range, the main control chip prioritizes driving the pressure regulating valve assembly to operate, thereby changing the flow resistance by adjusting the cross-sectional area of ​​its internal fluid channel, so that the pressure returns to the preset range. S3. The main control chip monitors the adjustment status of the pressure regulating valve assembly in real time; when it is determined that the pressure regulating valve assembly is in the maximum opening position but the pressure signal is still lower than the preset lower limit, a pressure boosting control command is generated. S4. The main control chip executes the pressure boosting control command, starts the pressure boosting mechanism to provide auxiliary pressure to the infusion pipeline, and continues to coordinate the control of the pressure regulating valve assembly and the pressure boosting mechanism based on the pressure signal fed back by the head end sensor until the system pressure stabilizes within the preset range.

[0016] This invention addresses the shortcomings of the prior art and has the following beneficial effects: The pressure is detected in real time by a sensor at the tip and fed back to the main control chip. The main control chip then drives the pressure regulating valve core to adjust the cross-sectional area of ​​the fluid channel. This allows the pressure regulation function to be directly integrated into the endoscope body, achieving automatic closed-loop control of intracavitary pressure without relying on external specialized equipment. Compared to solutions that use expensive external pressure control equipment, this reduces equipment complexity and procurement costs. At the same time, due to the shorter control loop, the pressure regulation response is faster, reducing the risk of intraoperative pressure fluctuations and thus improving the safety and stability of the surgical procedure.

[0017] This accessory achieves pressure enhancement through a gravity switch and air pump assistance, and seamless switching between infusion bags in the dual-channel infusion system. Utilizing readily available hospital consumables, it achieves a stable and adjustable pressure supply with a simple mechanical structure. Compared to relying on high-cost dedicated pressure source equipment, it reduces usage and maintenance costs, simplifies the nurses' preoperative preparation process, and ensures a smooth pressure transition when changing infusion bags during surgery, avoiding pressure interruptions or drastic changes, thus guaranteeing the continuity and reliability of the operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a three-dimensional structural diagram of the endoscope body according to a preferred embodiment of the present invention; Figure 2 This is a cross-sectional view of the endoscope body according to a preferred embodiment of the present invention; Figure 3 This is an exploded view of the endoscope body according to a preferred embodiment of the present invention; Figure 4 This is an exploded view of the pressure regulating valve assembly according to a preferred embodiment of the present invention; Figure 5 This is a cross-sectional view of a pressure regulating valve assembly according to a preferred embodiment of the present invention; Figure 6 This is a three-dimensional structural diagram of the guide groove according to a preferred embodiment of the present invention; Figure 7 This is a partial cross-sectional view of the sealing groove according to a preferred embodiment of the present invention; Figure 8 This is a partial cross-sectional view of the mounting holes in a preferred embodiment of the present invention; Figure 9 This is a three-dimensional structural diagram of the rotary wheel according to a preferred embodiment of the present invention; Figure 10 This is a three-dimensional structural diagram of the external thread of a preferred embodiment of the present invention; Figure 11 This is a three-dimensional structural diagram of the pressure regulating valve core according to a preferred embodiment of the present invention; Figure 12 This is a three-dimensional structural diagram of a medical infusion stent according to a preferred embodiment of the present invention; Figure 13 This is a three-dimensional structural diagram of the booster assembly according to a preferred embodiment of the present invention; Figure 14 This is a three-dimensional structural diagram of the conveying assembly according to a preferred embodiment of the present invention; Figure 15 This is a flowchart of a preferred embodiment of the present invention.

[0019] In the diagram: 1. Pressure regulating valve assembly; 11. Pressure regulating valve seat; 111. Guide groove; 112. Sealing groove; 113. Mounting hole; 114. Infusion inlet; 115. Infusion outlet; 12. Pressure regulating valve core; 121. Guide boss; 122. Internal thread; 123. Elastic head; 13. Motor stator; 14. Motor rotor; 141. Rotor; 142. External thread; 15. Valve seat pressure sensor; 16. Sealing ring; 2. Head end sensor; 3. 1. Infusion tubing; 4. Main control chip; 5. Wireless module; 6. LED light; 7. Main unit connection cable; 8. Medical infusion stand; 9. Pressure boosting component; 91. Pressure boosting airbag; 92. Gravity switch; 93. Safety valve; 94. Air pump; 95. Short hook; 96. Long hook; 97. Three-way tube one; 98. Infusion bag fixing buckle; 10. Delivery component; 101. Three-way tube two; 102. One-way valve; 103. Conical head; 104. Infusion outlet tube. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein. Therefore, the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0022] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] like Figure 1 and Figure 9 As shown, a pressure-measuring and pressure-controlling endoscope and its accessories include: Endoscope body; Pressure regulating valve assembly 1 is disposed on the endoscope body and is used to adjust the cross-sectional area of ​​the fluid channel; The head end sensor 2 is located at the head end of the endoscope body and is used to detect the pressure at the target site. Infusion tube 3 is mounted on the endoscope body and is used to connect to external tubing; The main control chip 4 is electrically connected to the pressure regulating valve assembly 1 and the head end sensor 2 respectively, and is used to control the working state of the pressure regulating valve assembly 1 according to the detection signal of the head end sensor 2; And a pressurizing mechanism, which, under the control of the main control chip 4, provides an auxiliary pressure source when the pressure regulation capability of the endoscope body is insufficient, and achieves seamless switching of the infusion bag to maintain the continuous stability of the system pressure.

[0025] The core of this invention lies in miniaturizing and integrating the active pressure regulation mechanism into the endoscope operating unit, enabling it to have real-time and automatic pressure regulation capabilities. The main control chip 4 processes the signals from the tip sensor 2 and controls the working state of the pressure regulating valve assembly 1, fundamentally eliminating reliance on independent external pressure control devices. Simultaneously, a low-cost accessory that can be used with standard hospital saline bags is introduced, including a pressurization assembly 9 and a delivery assembly 10. Through a combination of simple mechanical structure and pneumatic assistance, stable, adjustable, and seamless switching of the pressure source is achieved. It can automatically maintain a preset pressure range based on real-time pressure feedback during surgery, improving reliability, cost, and ease of operation. Example 1

[0026] like Figure 2 and Figure 10 As shown, specifically, the head sensor 2 is preferably a miniaturized pressure sensor, which is fixed to the end of the endoscope lens through packaging technology, and its sensing surface is exposed to the environment to directly sense pressure; the main control chip 4 is integrated inside the endoscope body, and the external pressure source consists of the medical infusion stent 8, the pressurizing airbag 91, and the air pump 94.

[0027] The key to this invention is the introduction and integration of a pressure regulating valve assembly 1 to solve the problem of the inability to control the internal pressure in a real-time and precise closed-loop manner. The pressure regulating valve assembly 1 adopts a screw-driven direct-acting valve structure. The screw is driven to rotate by a motor, which drives the valve core to move linearly, thereby precisely adjusting the valve opening and changing the fluid resistance flowing through the endoscopic instrument channel.

[0028] Specifically, the pressure regulating valve assembly 1 is installed in the instrument channel of the endoscope body, so that all fluids entering from the external tubing and intended to reach the body cavity must flow through this valve; the pressure signal detected by the head end sensor 2 is fed back to the main control chip 4 in real time. The main control chip 4 can steplessly adjust the valve opening by controlling the rotation direction and angle of the motor, forming an efficient closed-loop control.

[0029] like Figures 4-11 As shown, specifically, the pressure regulating valve assembly 1 includes a pressure regulating valve seat 11, a pressure regulating valve core 12, a motor stator 13, and a motor rotor 14; the pressure regulating valve seat 11 is fixedly installed inside the endoscope body, and has an axially penetrating inner cavity. One end of the inner cavity forms an infusion inlet 114, which is connected to the infusion tube 3 from the external pipeline, and the other end forms an infusion outlet 115, which is connected to the instrument channel leading to the end of the endoscope. On the inner wall of the pressure regulating valve seat 11, guide grooves 111 are symmetrically formed along the axial direction.

[0030] Furthermore, the pressure regulating valve core 12 is coaxially disposed in the inner cavity of the pressure regulating valve seat 11. The outer wall of the pressure regulating valve core 12 is provided with a guide boss 121 that cooperates with the guide groove 111, so that the pressure regulating valve core 12 can only move linearly along the axial direction of the pressure regulating valve seat 11 and cannot rotate circumferentially. The end of the pressure regulating valve core 12, that is, the end near the infusion outlet 115, is provided with an elastic head 123 made of elastic material, which is used to form an adjustable flow area with the valve port at the outlet of the valve seat. The pressure regulating valve core 12 has an internal thread 122 machined inside.

[0031] Furthermore, the motor rotor 14 and the motor stator 13 constitute a micro motor. The motor rotor 14 includes a wheel 141, and an external thread 142 is provided on one side of the rod. The external thread 142 meshes with the internal thread 122 in the pressure regulating valve core 12 to form a screw and nut transmission pair.

[0032] It should be noted that two sealing grooves 112 are also provided on the inner wall of the pressure regulating valve seat 11, with a sealing ring 16 embedded therein, to ensure dynamic sealing between the pressure regulating valve core 12 and the inner wall of the valve seat during the movement, to prevent fluid leakage, and an installation hole 113 is provided for installing the valve seat pressure sensor 15.

[0033] like Figure 3As shown, specifically, the endoscope body also integrates a wireless module 5, an LED light 6, and a host connection cable 7. The wireless module 5 is electrically connected to the main control chip 4 and is used to send wireless control commands to the air pump 94 when auxiliary pressurization is required. The LED light 6 is also electrically connected to the main control chip 4, and its light color is controlled by the main control chip 4 according to the pressure signal detected by the head end sensor 2, which is used to provide medical staff with an intuitive pressure status indication: a yellow light when the pressure is below the set lower limit, a green light when it is within the normal range, and a red light when it exceeds the set upper limit. The host connection cable 7 is used to connect to an external host to power the endoscope system and transmit data. Example 2

[0034] Based on Example 1, this example provides another optimized implementation of the pressure regulating valve assembly 1, which aims to further solve the problems of response speed and reliability.

[0035] Specifically, in this embodiment, the pressure regulating valve assembly 1 can adopt a piezoelectric ceramic driven structure. By utilizing the characteristic of piezoelectric ceramic material to deform under the action of an electric field, the valve core is directly driven to perform micro-amplitude, high-speed linear motion. Compared with the screw drive in Embodiment 1, the piezoelectric ceramic drive eliminates the conversion mechanism from rotation to linear motion, resulting in a more compact structure and extremely fast response speed, enabling higher frequency pressure fine-tuning.

[0036] Specifically, the pressure regulating valve assembly 1 includes a pressure regulating valve seat 11, a pressure regulating valve core 12, and a piezoelectric ceramic actuator. The integration of the pressure regulating valve seat 11 with the endoscope body is similar to that in Embodiment 1. The pressure regulating valve core 12 is also located in the inner cavity of the valve seat and is restricted to axial movement only by a guide structure. The difference is that the drive part no longer uses a rotary motor and screw, but instead uses a piezoelectric ceramic actuator composed of one or more stacked piezoelectric ceramic sheets.

[0037] Furthermore, one end of the actuator is fixed to the pressure regulating valve seat 11, and its free end is directly connected to or in contact with the non-valve plug end of the pressure regulating valve core 12 through a force transmission rod. When the main control chip 4 applies a control voltage to the piezoelectric ceramic actuator, the actuator will generate corresponding axial extension or contraction according to the voltage magnitude and polarity, thereby directly pushing or pulling the pressure regulating valve core 12 to make linear motion, so as to realize the adjustment of the valve opening.

[0038] It should be noted that, in order to amplify the displacement of the piezoelectric ceramic and increase the driving force, a lever amplification mechanism or a flexible hinge mechanism can be used to connect the actuator and the valve core; in addition, a preload spring can be set between the valve core and the drive end to ensure that the valve core is in a certain initial position when the piezoelectric ceramic is at zero voltage and to eliminate transmission gap; the valve seat pressure sensor 15 is set in the same way as in Embodiment 1, and is used to provide closed-loop feedback.

[0039] The dynamic working process of this embodiment is more direct. The main control chip 4 calculates the required valve core displacement based on the pressure error signal and converts it into a corresponding voltage signal applied to the piezoelectric ceramic actuator. The voltage signal causes the piezoelectric ceramic to deform with almost no delay, and is instantly converted into the precise displacement of the valve core through the force transmission mechanism, realizing instantaneous adjustment of the flow channel. Since its response frequency is much higher than that of the traditional motor screw mechanism, it can suppress pressure fluctuations more quickly, and is especially suitable for delicate surgical scenarios with extremely high requirements for pressure stability.

[0040] The unexpected synergistic effect of this embodiment lies in combining ultra-fast piezoelectric drive technology with the closed-loop pressure control requirements of endoscopes, resulting in a qualitative improvement. On the one hand, the extremely fast response speed enables the system to almost real-time offset pressure disturbances, minimizing pressure curve spikes and providing pressure stability. On the other hand, piezoelectric drives have no mechanical wear from motor rotation, resulting in a longer lifespan and quiet operation. This optimization, combined with the original precision sensing and high-speed computing capabilities of the endoscope system, together constitutes a high-end pressure management platform that is responsive, precise in control, and reliable in operation, solving the bottleneck problem of control accuracy caused by the lag in response of traditional mechanical actuators. Example 3

[0041] like Figure 2 and Figure 12 As shown, based on Embodiments 1 and 2, this embodiment further elaborates on the specific structure, function and working method of the pressurizing mechanism in conjunction with the endoscope body, focusing on the implementation details of the medical infusion stent 8, pressurizing component 9 and delivery component 10, aiming to fully explain how to provide auxiliary pressure and achieve seamless switching of infusion bags when the pressure regulating valve component 1 has insufficient adjustment capacity.

[0042] Within the normal pressure regulation range, the built-in pressure regulating valve assembly 1 is mainly used for real-time closed-loop control. When the fluid demand suddenly increases or the pressure of the infusion bag is insufficient during the operation, and the pressure regulating valve assembly 1 is fully opened but still cannot maintain the pressure in the cavity above the preset lower limit, the main control chip 4 will automatically start the external pressure boosting mechanism to provide an auxiliary pressure source and ensure that the pressure transitions smoothly when the infusion bag is changed during the operation, without interruption or violent fluctuation.

[0043] Specifically, the pressurization mechanism mainly includes a medical infusion stent 8, a pressurization component 9, and a delivery component 10. The three work together to form an auxiliary pressure supply and switching module that is independent of the endoscope body and can be flexibly deployed.

[0044] The medical infusion stent 8 serves as the supporting frame for the entire pressurization mechanism. Its structural design is compatible with conventional hospital infusion stands, facilitating rapid installation and positioning in the operating room. The stent body is made of lightweight alloy and has a crossbeam at the top for suspending the pressurization component 9 and the infusion bag.

[0045] like Figure 13 and Figure 14 As shown, specifically, the pressurizing component 9 can be selected and suspended on the crossbeam of the medical infusion stand 8 according to the actual situation through the short hook 95 and long hook 96 set on its top, and the infusion bag fixing buckle 98 ensures that the position of the infusion bag is stable during the squeezing process, preventing it from falling off or shifting.

[0046] Furthermore, the core of the pressurization component 9 is the pressurization airbag 91, which is made of medical-grade elastic material and has good flexibility and pressure resistance. The internal cavity of the pressurization airbag 91 is connected to the air pump 94 through a pipeline, and the external cavity is detachably connected to the delivery component 10 through the conical head 103, forming a coupling interface between the air circuit and the liquid circuit.

[0047] Furthermore, the top of the pressurizing airbag 91 is equipped with a safety valve 93, which is used to vent the air inside the pressurizing airbag 91 when replacing the infusion bag; the bottom is equipped with a gravity switch 92.

[0048] It should be noted that the air pump 94 is connected to the gravity switch 92 and the pressurizing airbag 91 through the three-way pipe 97; the air pump 94 receives the control command sent from the wireless module 5 inside the endoscope body, and starts when the main control chip 4 determines that auxiliary pressurization is needed, inflating the pressurizing airbag 91, causing it to expand and squeeze the infusion bag hanging next to it, thereby increasing the output pressure of the infusion bag.

[0049] Specifically, the delivery component 10 is responsible for forming a dual infusion channel to achieve seamless switching and delivery of the two bags of infusion fluid; its main body is a three-way tube 2 101, which is made of medical-grade transparent plastic to facilitate observation of the fluid flow status.

[0050] Furthermore, both ends of the two-way tube 101 are provided with conical heads 103 for quick plug-in connection with the corresponding interfaces on the pressurizing airbag 91; a one-way valve 102 is sleeved between each conical head 103 and the two-way tube 101, and the conduction direction of the one-way valve 102 is directed towards the center confluence of the two-way tube 101, ensuring that the liquid can only flow from the infusion bag through the pressurizing airbag 91 to the two-way tube 101, preventing backflow or mixing of the liquids from the two bags.

[0051] Furthermore, the other end of the three-way tube 2 101 is connected to an infusion outlet tube 104, which is connected to the infusion tube 3 on the endoscope body via a standard Luer connector, thereby delivering pressurized liquid to the endoscope instrument channel.

[0052] When this invention is used, the head end sensor 2 detects the pressure signal inside the human body cavity in real time and transmits it to the main control chip 4. The main control chip 4 compares the received pressure value with the preset safety range. When the pressure is within the normal range, the main control chip 4 controls the LED 6 to display green and the system maintains the current state. When the pressure exceeds the preset upper limit, the LED 6 displays red, and the main control chip 4 then drives the motor rotor 14 in the pressure regulating valve assembly 1 to rotate, which drives the pressure regulating valve core 12 to move axially to reduce the cross-sectional area of ​​the fluid channel, thereby achieving pressure reduction. When the pressure is lower than the preset lower limit, LED 6 displays yellow, and the main control chip 4 drives the pressure regulating valve assembly 1 to increase the cross-sectional area of ​​the fluid channel to increase the pressure. If the pressure regulating valve core 12 has moved to the maximum opening position but the pressure is still lower than the lower limit, the main control chip 4 sends a command through the wireless module 5 to start the air pump 94 in the pressure boosting bag. The air pump 94 inflates the pressure boosting air bag 91 and squeezes the saline bag to provide auxiliary pressure. The main control chip 4 continuously monitors the reading of the head end sensor 2. When the pressure reaches the upper limit, the air pump 94 is stopped. At the same time, the reading P of the valve seat pressure sensor 15 is recorded. After that, the main control chip 4 controls the start and stop of the air pump 94 based on the real-time reading of the valve seat pressure sensor 15. When the reading is below P, the air pump 94 is restarted to pressurize and maintain stable pressure. The matching dual-pass structure supports seamless switching between two bags of normal saline, and nurses can change the infusion bag during the operation without interrupting the pressure supply. Throughout the process, the main control chip 4 uses sensor feedback to coordinate and regulate the pressure regulating valve assembly 1 and the pressure boosting bag in real time, ensuring that the system pressure is always maintained within the preset safe range, thereby achieving continuous monitoring, automatic adjustment and stable control of the intracavity pressure (e.g., Figure 15 ).

[0053] Based on the preferred embodiments of the present invention described above, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A pressure-measuring and pressure-controlling endoscope and its accessories, characterized in that, include: Endoscope body; A pressure regulating valve assembly (1) is disposed on the endoscope body and is used to adjust the cross-sectional area of ​​the fluid channel; A head end sensor (2) is disposed at the head end of the endoscope body and is used to detect the pressure at the target site; An infusion tube (3) is installed on the endoscope body and is used to connect to external tubing; The main control chip (4) is electrically connected to the pressure regulating valve assembly (1) and the head end sensor (2) respectively, and is used to control the working state of the pressure regulating valve assembly (1) according to the detection signal of the head end sensor (2); And a pressure boosting mechanism, which is used to provide an auxiliary pressure source when the endoscope body pressure regulation capability is insufficient under the control of the main control chip (4), and to achieve seamless switching of infusion bags in order to maintain the continuous stability of system pressure.

2. The pressure-measuring and pressure-controlling endoscope and its accessories according to claim 1, characterized in that, It also includes a wireless module (5), an LED light (6) and a host connection cable (7) disposed inside the endoscope body. The LED light (6) and the wireless module (5) are electrically connected to the main control chip (4).

3. The pressure-measuring and pressure-controlling endoscope and its accessories according to claim 1, characterized in that, The pressure regulating valve assembly (1) includes a pressure regulating valve seat (11) having an infusion inlet (114) and an infusion outlet (115), a pressure regulating valve core (12) disposed in the pressure regulating valve seat (11), a motor stator (13) and a motor rotor (14) connected to the pressure regulating valve core (12).

4. The pressure-measuring and pressure-controlling endoscope and its accessories according to claim 3, characterized in that: The motor rotor (14) includes a wheel (141) and an external thread (142), and the pressure regulating valve core (12) is provided with an internal thread (122) that meshes with the external thread (142).

5. A pressure-measuring and pressure-controlling endoscope and its accessories according to claim 3, characterized in that: The inner wall of the pressure regulating valve seat (11) is provided with a guide groove (111), and the outer wall of the pressure regulating valve core (12) is provided with a guide boss (121) that cooperates with the guide groove (111).

6. A pressure-measuring and pressure-controlling endoscope and its accessories according to claim 3, characterized in that: The end of the pressure regulating valve core (12) is provided with an elastic head (123); the inner wall of the pressure regulating valve seat (11) is provided with a plurality of sealing grooves (112), and a sealing ring (16) is provided in the sealing groove (112).

7. A pressure-measuring and pressure-controlling endoscope and its accessories according to claim 3, characterized in that: The pressure regulating valve seat (11) has an installation hole (113), and a valve seat pressure sensor (15) is installed in the installation hole (113). The valve seat pressure sensor (15) is connected to the main control chip (4) via signal.

8. A pressure-measuring and pressure-controlling endoscope and its accessories according to claim 1, characterized in that, The pressurization mechanism includes: Medical infusion stents (8); A pressurizing component (9) is disposed on the medical infusion stand (8) for fixing and squeezing the medical infusion bag to provide pressure; The delivery assembly (10) is detachably connected to the pressurization assembly (9) to form a dual-channel infusion system; The delivery assembly (10) includes a three-way pipe (101), both ends of which are provided with conical heads (103). A one-way valve (102) is sleeved between the three-way pipe (101) and the conical head (103). The other end of the three-way pipe (101) is connected to an infusion outlet pipe (104).

9. A pressure-measuring and pressure-controlling endoscope and its accessories according to claim 8, characterized in that: The pressurization assembly (9) includes a pressurization airbag (91) connected to the conical head (103). The top of the pressurization airbag (91) is provided with a safety valve (93), a short hook (95) and a long hook (96). The bottom of the pressurization airbag (91) is provided with a gravity switch (92). A three-way pipe (97) is provided between the gravity switches (92). An air pump (94) is provided at the other end of the three-way pipe (97).

10. A pressure-controlling endoscope and its accessories, based on any one of claims 1-9, characterized in that, Includes the following steps: S1. The main control chip (4) continuously acquires the pressure signal of the target part detected in real time by the head end sensor (2), compares the pressure signal with the preset safe pressure range, and generates corresponding control decisions based on the comparison results. S2. When the pressure signal deviates from the preset range, the main control chip (4) prioritizes driving the pressure regulating valve assembly (1) to operate, and changes the flow resistance by adjusting the cross-sectional area of ​​its internal fluid channel, so that the pressure returns to the preset range. S3. The main control chip (4) monitors the adjustment status of the pressure regulating valve assembly (1) in real time; when it is determined that the pressure regulating valve assembly (1) is in the maximum opening position but the pressure signal is still lower than the preset range lower limit, a pressure boosting control command is generated. S4. The main control chip (4) executes the pressure boosting control command, starts the pressure boosting mechanism to provide auxiliary pressure for the infusion pipeline, and continues to coordinate the control of the pressure regulating valve assembly (1) and the pressure boosting mechanism according to the pressure signal fed back by the head end sensor (2) until the system pressure is stable within the preset range.

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