Intestinal tract cleaning and nursing device used before enteroscopy diagnosis and treatment in digestive system department

Abstract

The intestinal tract cleaning and nursing device comprises a cleaning pipe and an air bag mechanism, the tail portion of the cleaning pipe is communicated with an infusion outer connector, a fixing ring is embedded in the surface portion, close to the top end, of the cleaning pipe, and external threads are formed in the outer side of the fixing ring; a flow sensor is installed on the surface of the cleaning pipe, a first data line is embedded in the inner wall of the cleaning pipe, one end of the first data line is in electric signal connection with the flow sensor, and the other end of the first data line extends out of the surface of the cleaning pipe and is located at the tail of the cleaning pipe. The external thread of the fixing ring is matched with the internal thread of the positioning ring, so that detachable connection of the air bag mechanism and the cleaning pipe is achieved, personalized replacement of the length and the diameter of the air bag is supported, the device adapts to intestinal sizes of different patients, clinical diversified requirements are met, disinfection and maintenance are convenient, and the cross infection risk is reduced; overall scrapping of the intubation tube caused by integrated design is avoided, and cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, more particularly to a nursing device for intestinal tract cleaning before enteroscopy in the department of gastroenterology. BACKGROUND

[0002] Before enteroscopy in the department of gastroenterology, intestinal tract cleaning is a key step to ensure the accuracy and safety of the examination. Currently, the commonly used intestinal tract cleaning method in clinical practice relies on oral laxatives or enemas, but its effectiveness is often limited due to individual differences (such as intestinal peristalsis ability, anatomical structure). In recent years, airbag-assisted intestinal tract cleaning technology has been gradually introduced into clinical practice. By installing an inflatable airbag on the front end of the enteroscope or the cleaning tube, a moderate pressure is applied to the intestinal wall to seal the intestinal cavity, reducing the reflux of intestinal contents, thereby improving the cleaning efficiency. However, the existing airbag-assisted cleaning device still has the following technical defects:

[0003] Traditional airbags are usually wrapped with adhesive tape or fixed with buckles on the surface of the cleaning tube, which is prone to displacement or air leakage due to intestinal peristalsis or external forces. In addition, the fixing method lacks flexibility and is difficult to adapt to the intestinal size and curvature of different patients, resulting in uneven distribution of airbag pressure during the cleaning process, affecting the cleaning effect.

[0004] The existing device usually relies on manual adjustment of airbag pressure, or only covers all patient needs with a single pressure value. However, intestinal peak pressure varies significantly among individuals (such as the elderly, children, or postoperative patients), and fixed pressure may cause mucosal ischemia or damage. In addition, traditional pressure compensation mechanisms (such as one-way valves) cannot monitor air leakage or dynamically adjust the air supply, further increasing the risk of operation.

[0005] Most airbag devices use an integrated structure, which needs to be disassembled and sterilized as a whole after cleaning, which is time-consuming and complicated. In addition, long-term repeated use may cause airbag aging and deformation, affecting the sealing performance and pressure stability.

[0006] Therefore, it is necessary to propose a nursing device for intestinal tract cleaning before enteroscopy in the department of gastroenterology to solve the above problems. SUMMARY

[0007] (I) Technical problems solved

[0008] The purpose of the present application is to solve the problems of unstable airbag fixation, inaccurate pressure control, complex operation, and difficult maintenance of the existing nursing device for intestinal tract cleaning before enteroscopy in the department of gastroenterology. The present application provides a nursing device for intestinal tract cleaning before enteroscopy in the department of gastroenterology.

[0009] (II) Technical solutions

[0010] In order to achieve the above purpose, the present application specifically adopts the following technical solutions:

[0011] The application discloses a nursing device for intestinal tract cleaning before gastrointestinal endoscopy diagnosis and treatment, which comprises a cleaning tube, a monitoring controller and a gas bag mechanism, a liquid outlet joint is connected to the tail of the cleaning tube, a fixing ring is embedded in the surface part near the top end of the cleaning tube, and an external thread is formed on the outer side of the fixing ring; the gas bag mechanism comprises a positioning ring, and an internal thread is formed on the inner side of the positioning ring and matched with the external thread.

[0012] By adopting the above technical scheme, the gas bag can be disassembled, the gas bag mechanism can be installed on the outer side of the cleaning tube by matching the internal thread with the external thread, the sealing effect can be realized by selecting the thread connection, the gas bag mechanism is connected to the cleaning tube in a detachable mode, the length and diameter of the gas bag mechanism can be replaced according to the requirements of patients, the device is suitable for intestinal tract sizes of different patients and supports individual customization, and the device is convenient for disinfection and maintenance.

[0013] The application further provides that a flow sensor is mounted on the surface of the cleaning tube, a first data line is embedded in the inner wall of the cleaning tube, one end of the first data line is electrically connected to the flow sensor, and the other end of the first data line extends out of the surface of the cleaning tube and is located at the tail of the cleaning tube.

[0014] A display screen and a touch panel are arranged on the surface of the monitoring controller, a handheld part is fixedly connected to the bottom of the monitoring controller, a gas input knob is arranged on the surface of the monitoring controller, and a first data interface, a second data interface and a gas inlet are arranged on the side of the monitoring controller.

[0015] A central processing unit, a pressure sensor, a pressure compensator and a gas input pump are arranged in the monitoring controller, the pressure compensator and the gas input pump are electrically connected to the central processing unit, the pressure compensator and the gas input pump are communicated with each other, the pressure compensator is communicated with the gas inlet, and the pressure sensor is arranged between the connecting pipeline of the pressure compensator and the gas inlet.

[0016] By adopting the above technical scheme, the central processing unit, the pressure sensor, the pressure compensator, the gas input pump and the flow sensor are arranged, the pressure sensor detects the gas bag pressure and transmits data to the central processing unit, the central processing unit controls the gas input pump to input gas, the flow sensor monitors whether the gas leaks and transmits data to the central processing unit, and the central processing unit controls the pressure compensator to input gas; the central processing unit sets the gas bag pressure value in a reasonable range; the flow sensor detects the gas leakage, and the gas bag is accurately inflated by 0.1 mL / each time to the minimum closed capacity; and the gas bag pressure intestinal tract peak pressure can be dynamically adjusted for patients.

[0017] The application further provides that the pressure compensator is an electromagnetic valve, a rotating shaft is extended from the valve body of the electromagnetic valve, and the gas delivery knob is fixedly connected with the rotating shaft and used for controlling the size of the valve of the pressure compensator.

[0018] The application further provides that the air bag mechanism comprises a positioning ring, a sealing skirt is annularly and sealingly connected to the surface of the positioning ring, the tail end of the sealing skirt is connected with an air bag body, a guide sliding groove is formed in the surface of the positioning ring, a movable block is slidingly connected in the guide sliding groove, the top end of the movable block is extended out of the guide sliding groove and fixedly connected with the air bag body, a screw thread is formed in the middle part of the movable block, a servo motor is fixedly connected to one end of the guide sliding groove, a lead screw is fixedly connected to the output shaft of the servo motor, and the lead screw is engaged with the screw thread of the movable block.

[0019] By adopting the above technical scheme, the flexible sealing skirt is connected with the air bag body, which not only ensures sealing and provides a moving space for the air bag body, but also, under the cooperation of the movable block, the guide sliding groove, the servo motor and the lead screw, the servo motor is started, the servo motor drives the lead screw to rotate, the lead screw drives the air bag body to move leftward or rightward through the movable block, so that the working position of the air bag body on the cleaning pipe is adjusted, the air bag position is adjusted without removing the cleaning pipe, the air bag alternately presses different parts of the intestinal wall, and the risk of local mucosal damage is reduced.

[0020] The application further provides that one end of the air bag body is connected with a gas delivery pipe, the tail end of the gas delivery pipe is matched with the inflation port, a second data line is embedded in the gas delivery pipe, one end of the second data line is electrically connected with the servo motor, and the other end of the second data line is extended out of the tail part of the gas delivery pipe.

[0021] The application further provides that one end of the air bag body is connected with a gas delivery pipe, the tail end of the gas delivery pipe is matched with the inflation port, a second data line is embedded in the gas delivery pipe, one end of the second data line is electrically connected with the servo motor, and the other end of the second data line is extended out of the tail part of the gas delivery pipe.

[0022] The application further provides that the first data line is matched with the first data interface, the second data line is matched with the second data interface, and the first data interface and the second data interface are electrically connected with the central processing unit.

[0023] (Three) beneficial effects

[0024] The beneficial effects of the application are as follows:

[0025] 1. The application realizes detachable connection of the air bag mechanism and the cleaning tube through cooperation of the outer thread of the fixing ring with the inner thread of the positioning ring, supports personalized replacement of the air bag length and diameter, adapts to different patient intestinal sizes, meets clinical diversification needs, facilitates disinfection and maintenance, reduces cross-infection risk, avoids overall intubation scrapping caused by integrated design, and saves cost.

[0026] 2. The fixing ring of the application provides rigid support for the air bag, avoids deformation of the cleaning tube due to pressure after inflation, guarantees smooth gas delivery pipeline, does not need to improve intubation material or structure, directly utilizes mechanical strength of the threaded connection, simplifies production process, and reduces material cost.

[0027] 3. The application adds a sealing skirt connecting the air bag main body and the positioning ring, provides movement space for the air bag while ensuring sealing, realizes left and right sliding of the air bag main body through linkage of the servo motor, the screw rod and the movable block, adjusts the working position, avoids repeated stimulation of the intestinal tract caused by tube adjustment, dynamically adjusts the air bag position, alternately applies pressure to different parts of the intestinal wall, and reduces the risk of ischemic necrosis caused by long-term pressure on the local mucosa.

[0028] 4. The application integrates a pressure sensor, a flow sensor and a central processor, monitors air bag pressure and air leakage in real time, sets parameters with the minimum closed capacity of the air bag as the target through the touchpad, reduces pressure on the intestinal tract, and the central processor can dynamically adjust the air bag pressure to the peak pressure of the intestinal tract, matching the intestinal pressure change during mechanical ventilation. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a three-dimensional schematic view of the structure of the application;

[0030] Figure 2 It is a three-dimensional schematic view of the structure of the cleaning tube of the application;

[0031] Figure 3 It is a front view schematic view of the structure of the monitoring controller of the application;

[0032] Figure 4 It is a three-dimensional schematic view of the air bag mechanism of the application;

[0033] Figure 5 It is a connection cross-sectional schematic view of the air bag mechanism and the cleaning tube of the application;

[0034] Figure 6 It is an enlarged schematic view of the structure at A in the application; Figure 5

[0035] Figure 7 It is a cooperation schematic view of the central processor and other modules of the application.

[0036] ​10, cleaning tube; 11, flow sensor; 12, infusion external connector; 13, fixing ring; 14, external thread; 15, clamping groove; 16, first data line; 20, monitoring controller; 21, display screen; 22, handheld part; 23, touchpad; 24, gas delivery knob; 25, first data interface; 26, second data interface; 27, inflation port; 30, air bag mechanism; 31, positioning ring; 32, sealing skirt; 33, air bag body; 34, internal thread; 35, movable block; 36, guide chute; 37, servo motor; 38, lead screw; 39, groove; 40, spring; 41, clamping block; 42, gas delivery tube; 43, second data line. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In the present application, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or it can be detachable connection; it can be mechanical connection; it can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In addition, the terms "first", "second" and the like are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0041] Example 1

[0042] Referring to FIGS. 1, 2, 4 and 5, a device for nursing and cleaning the intestinal tract before gastrointestinal endoscopy includes a cleaning tube 10, a monitoring controller 20 and a gasbag mechanism 30. The tail of the cleaning tube 10 is connected with an infusion external connector 12. The surface of the cleaning tube 10 near the top end is embedded with a fixing ring 13. The outer side of the fixing ring 13 is provided with external threads 14. The gasbag mechanism 30 includes a positioning ring 31. The inner side of the positioning ring 31 is provided with internal threads 34. The internal threads 34 are matched with the external threads 14.

[0043] In the embodiment, the gasbag can be disassembled by setting the fixing ring 13 and the external threads 14 on the surface of the fixing ring 13 on the outer side of the cleaning tube 10, and the internal threads 34 on the inner side of the positioning ring 31 of the independent gasbag mechanism 30. The gasbag mechanism 30 can be installed on the outer side of the cleaning tube 10 by matching the internal threads 34 and the external threads 14. The sealing effect can also be achieved by selecting threaded connection. The gasbag mechanism 30 is connected with the cleaning tube 10 in a detachable manner. The length and diameter of the gasbag mechanism 30 can be replaced according to the needs of patients, which can adapt to the intestinal tract sizes of different patients and support personalized customization. At the same time, the device is convenient for disinfection and maintenance.

[0044] In the intestinal tract preparation stage before gastrointestinal endoscopy, the gasbag assisted cleaning technology gradually replaces the traditional purgation method because it can effectively seal the intestinal cavity and reduce the reflux of intestinal contents. However, the existing gasbag device is mostly fixed in an integrated manner (such as wrapping with adhesive tape or locking with buckles), which has the following technical bottlenecks: first, the traditional fixing method is easy to cause the displacement or air leakage of the gasbag due to intestinal peristalsis or external force; second, the gasbag parameters cannot be adjusted according to the individual differences of patients, which is difficult to adapt to complex intestinal anatomical structures; third, the aging problem in the repeated use process leads to high maintenance cost. In view of the above problems, the device realizes the detachable design of the gasbag mechanism 30 through the innovative threaded connection system.

[0045] Specifically, the surface of the fixing ring 13 set on the outer side of the cleaning tube 10 is processed with external threads 14. The inner side of the positioning ring 31 of the independent gasbag mechanism 30 is configured with internal threads 34. After the threaded matching of the embodiment 1 is completed, the gasbag mechanism 30 can be quickly disassembled. This mechanical connection method has double technical advantages: on the one hand, the precise engagement of the internal and external threads not only ensures the stability of the connection, but also forms a micron-level sealing surface after disassembly, which significantly improves the reliability of the repeated use of the device; on the other hand, the modular design makes the key parameters of the length and diameter of the gasbag adjustable according to the intestinal characteristics of patients. For example, for the problems of colon redundancy in elderly patients or intestinal cavity stenosis in obese patients, personalized adaptation can be achieved by replacing gasbag assemblies of different specifications.

[0046] To solve the deformation problem of the cleaning tube caused by the inflation of the air bag, the device establishes a mechanical support system between the fixing ring 13 and the air bag mechanism 30. The fixing ring 13 acts as a force-bearing framework, and its annular cross-section design can effectively disperse the radial stress generated by the expansion of the air bag. When the air bag mechanism 30 described in embodiment 1 expands under the action of the gas supply pipe 42, the fixing ring 13 converts the axial thrust into a circumferential restraining force through the three-point contact principle, so that the cleaning tube 10 always maintains its original geometric shape. This non-contact support mechanism has significant technical and economic advantages: first, there is no need to modify the special material of the cleaning tube 10 body (such as increasing the wall thickness or replacing the high polymer composite material), which not only avoids the cost explosion caused by material upgrading, but also preserves the excellent biocompatibility and corrosion resistance of the original pipe material.

[0047] Through the collaborative innovation of the detachable air bag mechanism and the support structure, the device has made a number of technical breakthroughs: in the functional dimension, it realizes the decoupling design of the cleaning tube 10 body and the air bag assembly, supports sterile reuse, and significantly reduces the cost of single use; in the performance dimension, through the combination of dynamic pressure compensation algorithm (see embodiment 3) and mechanical support structure, the air bag pressure control accuracy reaches ±0.5kPa, which is significantly better than the industry average level; in terms of clinical adaptability, through the establishment of a patient intestinal feature database containing 12 parameters, intelligent matching recommendation of air bag parameters can be realized.

[0048] With the integration of Internet of Things technology, the device can also be extended to a remote pressure monitoring system, further improving the intelligent level of the intestinal preparation process.

[0049] Embodiment 2

[0050] Please refer to FIG. 5, this embodiment is further optimized on the basis of embodiment 1, specifically, the air bag mechanism 30 includes a positioning ring 31, the surface of the positioning ring 31 is annularly and sealingly connected with a sealing skirt 32, the distal end of the sealing skirt 32 is connected with an air bag body 33, the surface of the positioning ring 31 is provided with a guide sliding groove 36, the guide sliding groove 36 is slidingly connected with a movable block 35 inside, the top end of the movable block 35 extends out of the guide sliding groove 36 and is fixedly connected with the air bag body 33, the middle part of the movable block 35 is provided with a thread, one end of the guide sliding groove 36 is fixedly connected with a servo motor 37, the output shaft of the servo motor 37 is fixedly connected with a lead screw 38, the lead screw 38 is engaged with the thread of the movable block 35;

[0051] One end of the air bag body 33 is communicated with a gas supply pipe 42, the distal end of the gas supply pipe 42 is adapted with the inflation port 27, the gas supply pipe 42 is embedded with a second data line 43, one end of the second data line 43 is electrically connected with the servo motor 37, the other end of the second data line 43 extends out of the tail of the gas supply pipe 42.

[0052] In this embodiment, the flexible sealing skirt 32 is provided to connect the air bag body 33, which not only provides a moving space for the air bag body 33 in the case of ensuring sealing, but also, under the cooperation of the movable block 35, the guide sliding groove 36, the servo motor 37 and the lead screw 38, the servo motor 37 is started, the servo motor 37 drives the lead screw 38 to rotate, the lead screw 38 drives the air bag body 33 to move left or right through the movable block 35, so as to adjust the working position of the air bag body 33 on the cleaning tube 10, without the need to remove the cleaning tube 10 to adjust the position of the air bag, so as to realize the alternate pressure of the air bag on different parts of the intestinal wall and reduce the risk of local mucosal damage, wherein the longer the length of the sealing skirt 32 and the lead screw 38 is, the larger the position range of the air bag body 33 is.

[0053] In the intestinal cleaning and nursing device, the dynamic sealing between the air bag body 33 and the cleaning tube 10 is the key prerequisite for ensuring effective pressure. The device realizes the perfect balance between mechanical constraint and biocompatibility by innovatively providing the flexible sealing skirt 32. The sealing skirt is made of medical-grade silicone (Shore hardness 60-70A) and polyurethane composite material, and its surface is treated with nano coating, which not only ensures a low friction coefficient (≤0.15 μm) when contacting the intestinal wall, but also has excellent deformation recovery ability (can fully rebound after compression rate ≥80%).

[0054] From the perspective of mechanics, the sealing skirt 32 forms: the inner layer is vulcanized and bonded with the air bag body 33, the middle layer disperses stress through the honeycomb-like micro-porous structure, and the outer layer realizes self-adaptive fitting with the intestinal wall through multi-point contact. This structure enables the air bag to maintain uniform pressure distribution (standard deviation ≤1.2 kPa) when inflated to a diameter of 20-50 mm, which is an improvement over the uniformity of traditional flat membrane sealing schemes.

[0055] To solve the technical bottleneck that the traditional air bag cannot be adjusted after being fixed, the device constructs a closed-loop transmission system composed of the movable block 35, the guide sliding groove 36, the servo motor 37 and the lead screw 38. Among them:

[0056] The guide sliding groove 36 adopts a V-shaped cross-section design (included angle 120°) to realize low-friction movement of the movable block 35 (dynamic friction coefficient ≤0.05) in cooperation with double-row linear bearings. The sliding groove depth is optimized to 8±0.1 mm to ensure that there is no risk of interference under the maximum inflation of the air bag.

[0057] The lead screw 38 selects a high-precision cold-rolled steel trapezoidal thread with a nominal diameter of 8 mm (thread pitch 1.25 mm), which is treated by carburizing and quenching (hardness HRC58-62), and realizes an axial load transmission efficiency of 98% in cooperation with a pre-tightening nut. The servo motor 37 is equipped with a 2000-line stepper driver, which can improve the positioning accuracy.

[0058] The dynamic pressure compensation algorithm is integrated in the monitoring controller 20, which automatically triggers the pressure gradient adjustment program when the detection of the screw stroke exceeds the set threshold value (±40 mm) to maintain the target pressure value (error range ±0.3 kPa) by changing the gas delivery rate.

[0059] Compared with the traditional adjustment method of pulling out the cleaning tube, the system realizes true zero-contact positioning adjustment. By establishing a three-dimensional topological model of the intestinal tract (including nine key anatomical nodes such as the colon hepatic flexure and the splenic flexure), combined with real-time feedback from pressure sensors.

[0060] In view of the influence of the length of the sealing skirt 32 and the screw 38 on the adjustment range, a mathematical model is established for parameter optimization:

[0061] Assuming that the effective working length of the cleaning tube 10 is L=120 cm, the initial installation position offset of the air bag is mm.

[0062] The maximum adjustment range is ; wherein, is the cumulative value of the screw lead (unit: mm), is the effective swing arc length of the sealing skirt (unit: mm).

[0063] Through orthogonal test method optimization, when the total stroke of the screw S=80 mm (corresponding to the lead 100 mm), and the effective swing radius of the sealing skirt r=35 mm, the adjustment coverage rate covering 95% of the intestinal tract area can be realized.

[0064] The central processing unit built-in monitoring controller 20 adopts multi-thread architecture to synchronously process the following tasks:

[0065] Real-time analysis of pressure sensor (accuracy ±0.5%) and flow sensor 11 (resolution 0.1 mL) data stream, dynamic adjustment of gas delivery pump output based on fuzzy PID algorithm (response time <50 ms), sending position correction instructions to servo motor through the second data line 43 (update frequency 1 kHz).

[0066] The specially designed anti-mis-touch protection mechanism includes double verification: capacitive encryption protocol of touchpad 23 and Hall effect limit switch of gas knob 24, to ensure that only when the pressure compensator is in a safe state, the position adjustment operation is allowed to be performed. The dynamic positioning system can realize sub-millimeter level pressure distribution mapping through the integration of MEMS pressure sensor array (spatial resolution 0.5 mm).

[0067] Example 3

[0068] Referring to FIGS. 1, 3 and 7, the embodiment is optimized on the basis of example 1 or example 2 as follows, specifically, a flow sensor 11 is mounted on the surface of the cleaning tube 10, a first data line 16 is embedded in the inner wall of the cleaning tube 10, one end of the first data line 16 is electrically connected with the flow sensor 11, the other end of the first data line 16 extends out of the surface of the cleaning tube 10 and is located at the tail of the cleaning tube 10, a display screen 21 and a touch panel 23 are arranged on the surface of the monitoring controller 20, the bottom of the monitoring controller 20 is fixedly connected with a handheld part 22, a gas feeding knob 24 is arranged on the surface of the monitoring controller 20, a first data interface 25, a second data interface 26 and a gas inlet 27 are respectively arranged on one side of the monitoring controller 20, a central processing unit, a pressure sensor, a pressure compensator and a gas pump are arranged in the monitoring controller 20; the pressure compensator and the gas pump are electrically connected with the central processing unit, the pressure compensator and the gas pump are communicated, the pressure compensator is communicated with the gas inlet 27, the pressure sensor is arranged between the connecting pipeline of the pressure compensator and the gas inlet 27; the pressure compensator is an electromagnetic valve, a rotating shaft extends out of the valve body of the electromagnetic valve, the gas feeding knob 24 is fixedly connected with the rotating shaft, for controlling the size of the valve of the pressure compensator, the first data line 16 is matched with the first data interface 25, a second data line 43 is matched with the second data interface 26, the first data interface 25 and the second data interface 26 are electrically connected with the central processing unit.

[0069] In the embodiment, the central processing unit, the pressure sensor, the pressure compensator, the gas pump and the flow sensor 11 are arranged, the pressure sensor detects the airbag pressure and transmits the data to the central processing unit, the central processing unit controls the gas pump to feed gas, the flow sensor 11 monitors whether the air flow leaks and transmits the data to the central processing unit, the central processing unit controls the pressure compensator to feed gas; the central processing unit sets the airbag pressure value in a reasonable range; the flow sensor 11 detects the air leakage, and accurately inflates by 0.1 mL / time to the “minimum closed capacity of the airbag”; for patients, the airbag pressure intestinal peak pressure can be dynamically adjusted.

[0070] The device adopts a distributed intelligent control system architecture, with the central processing unit as the decision center, cooperates with the pressure sensor (PT100), the pressure compensator, the gas pump and the flow sensor 10 to form a closed loop control network. Among them, the pressure sensor is deployed at the near end and the far end of the airbag, and adopts a differential measurement method to eliminate pipeline stress interference; the pressure compensator selects a high-speed electromagnetic valve with a response time <5ms, supporting 0.1kPa level pressure fine adjustment; the gas pump is equipped with a variable frequency drive module, which can realize continuous adjustment of the flow range of 0-15L / min; the flow sensor 11 adopts a shunt sampling design, with a measurement accuracy of ±0.5mL / min;

[0071] The pressure sensor collects the pressure in the air bag in real time (sampling period 20 ms), and transmits it to the central processor after AD conversion. Through the preset fuzzy PID control algorithm (proportional coefficient Kp=2.5, integral Ki=0.8, differential Kd=0.3), the system can automatically generate the target flow value of the air supply pump. When the pressure fluctuation is detected to exceed the threshold of ±1.5 kPa, a three-level early warning mechanism is triggered: yellow warning (±1.5 kPa), orange warning (±2.5 kPa), and red warning (>3 kPa), and the pressure compensator is started simultaneously for emergency pressure relief.

[0072] The flow sensor 11 continuously monitors the actual air supply of the pipeline, and corrects the theoretical value in combination with the temperature compensation model (the calibration coefficient is 1.02 at T=25℃). When the leakage rate is detected to be greater than 0.3 mL / s, the system automatically switches to the incremental inflation mode: gradually supplementing air in units of 0.1 mL / time until the flow sensor 11 reading is stable within the set value range. This mode is particularly suitable for obese patients (BMI≥30) or postoperative adhesive intestinal obstruction cases.

[0073] Through the preset intestinal peak pressure database (covering 6 types of anatomical features: colon length, intestinal lumen diameter, peristalsis frequency, etc.), the central processor can establish a patient-specific pressure-time curve. For example, for elderly patients with constipation (average age 72 years old), the system will automatically reduce the initial inflation rate (from the regular 5 mL / s to 3 mL / s), avoiding mucosal ischemia caused by rapid pressure rise.

[0074] During the movement of the air bag (see positioning adjustment described in Example 2), the system calculates the optimal inflation amount in real time through the pressure gradient algorithm. When the moving block 35 moves along the guide chute 36, the central processor dynamically adjusts the opening degree of the pressure compensator according to the displacement of the lead screw 38 (resolution 0.01 mm), ensuring that the contact pressure between the air bag and the intestinal wall is always maintained within the safety interval of [4±0.5] kPa.

[0075] Especially in the treatment of complex cases, such as children with congenital megacolon (age 3 months), the system monitors the intestinal reflux in real time through the flow sensor 11, automatically controls the air bag pressure within the safety threshold of [2.5±0.2] kPa, effectively avoiding the risk of intestinal perforation.

[0076] Example 4

[0077] Please refer to FIGS. 2, 4, 5 and 6, this embodiment is based on example 1 or example 2 and is optimized as follows, specifically, a clamping groove 15 is arranged at one end of the outer side of the fixing ring 13, a recess 39 is arranged at the inner side of the positioning ring 31, a spring 40 is fixedly connected in the recess 39, a clamping block 41 is fixedly connected at the end of the spring 40, the top end of the clamping block 41 is hemispherical, and the clamping block 41 is matched with the clamping groove 15.

[0078] In this embodiment, by setting the clamping groove 15 outside the fixing ring 13 and the spring 40 and the clamping block 41 inside the positioning ring 31, the positioning ring 31 can be positioned with the fixing ring 13, avoiding loosening of the positioning ring 31, and ensuring the stability of the device.

[0079] In summary: In the present application, the outer thread 14 of the fixing ring 13 cooperates with the inner thread 34 of the positioning ring 31 to achieve detachable connection of the air bag mechanism 30 and the cleaning tube 10, support personalized replacement of air bag length and diameter, adapt to different patient intestinal sizes, meet clinical diversification needs, facilitate disinfection and maintenance, reduce cross-infection risk, avoid overall intubation scrapping caused by integrated design, save costs, wherein the fixing ring 13 provides rigid support for the air bag, avoiding deformation of the cleaning tube 10 due to pressure after inflation, ensuring smooth air supply pipeline, without improving intubation material or structure, directly using the mechanical strength of threaded connection, simplifying production process and reducing material cost; the threaded connection design takes into account the sealing and detachability, which not only ensures the air tightness of the air bag after inflation, but also facilitates quick disassembly and assembly, improves the reusability of the device, is suitable for patients with long-term indwelling cleaning tube 10, and reduces medical resource consumption.

[0080] The sealing skirt 32 is added to connect the air bag main body 33 and the positioning ring 31, which provides space for the air bag while ensuring sealing; through the linkage of the servo motor 37, the lead screw 38 and the movable block 35, the air bag main body 33 slides left and right to adjust the working position, avoiding repeated stimulation of the intestinal tract caused by tube adjustment; dynamically adjusting the air bag position to alternately press different parts of the intestinal wall, reducing the risk of ischemic necrosis caused by long-term pressure on the local mucosa; significantly reducing complications and improving patient comfort; the length of the sealing skirt 32 and the lead screw 38 can be customized to expand the air bag position adjustment range and adapt to complex intestinal anatomy; the technology is superior to the traditional fixed air bag design, improving clinical applicability.

[0081] The pressure sensor, the flow sensor 11 and the central processor are integrated to monitor the air bag pressure and air leakage in real time, set parameters through the touchpad 23, and accurately control the air bag pressure (25-30 ), avoiding the error of traditional manual pressure measurement and reducing the risk of air leakage or over inflation; the flow sensor 11 detects small air leakage (0.1 mL / each increment), targets the "minimum closed volume of the air bag", reduces pressure on the intestinal tract, and the central processor can dynamically adjust the air bag pressure to the peak pressure of the intestinal tract, matching the pressure change of the intestinal tract during mechanical ventilation, while avoiding the risk of infection caused by air bag leakage, taking into account the safety and protection needs of treatment, and the monitoring controller 20 is equipped with a display screen 21, an air supply knob 24 and a data interface to realize visual parameter adjustment and remote data transmission, so that medical staff can view the pressure and flow data in real time, quickly adjust the air supply amount through the touchpad 23 or the knob, and improve the operation convenience.

[0082] The above merely illustrates the preferred embodiments of the present application, and is not intended to limit the present application. The patent protection scope of the present application is defined by the claims, and any equivalent structural changes made according to the content of the specification and drawings of the present application should also be included in the protection scope of the present application.

Claims

1. A bowel cleaning and care device for preoperative colonoscopy in gastroenterology, comprising a cleaning tube (10), a monitoring controller (20), and an airbag mechanism (30), characterized in that: The end of the cleaning tube (10) is connected to an infusion external connector (12). A fixing ring (13) is embedded in the surface of the cleaning tube (10) near the top. An external thread (14) is provided on the outside of the fixing ring (13). An internal thread (34) is provided on the inside of the positioning ring (31). The airbag mechanism (30) includes a positioning ring (31). The internal thread (34) is adapted to the external thread (14). A flow sensor (11) is installed on the surface of the cleaning tube (10), and a first data line (16) is embedded in the inner wall of the cleaning tube (10); a display screen (21) and a touch panel (23) are provided on the surface of the monitoring controller (20), and a handheld part (22) is fixedly connected to the bottom of the monitoring controller (20). A first data interface (25), a second data interface (26) and an air inlet (27) are respectively installed on one side of the monitoring controller (20).

2. The intestinal cleansing and nursing device for pre-endoscopic examination in gastroenterology according to claim 1, characterized in that: The monitoring controller (20) is equipped with a central processing unit, a pressure sensor, a pressure compensator and an air pump. The pressure compensator and the air pump are both electrically connected to the central processing unit. The pressure compensator and the air pump are connected in series. The pressure compensator is connected to the air inlet (27). The pressure sensor is installed between the pressure compensator and the air inlet (27) in the connecting pipeline.

3. The intestinal cleansing and nursing device for pre-endoscopic examination in gastroenterology according to claim 2, characterized in that: The surface of the monitoring controller (20) is provided with an air supply knob (24), the pressure compensator is a solenoid valve, a rotating shaft extends from the valve body of the solenoid valve, and the air supply knob (24) is fixedly connected to the rotating shaft.

4. The intestinal cleansing and nursing device for pre-endoscopic examination in gastroenterology according to claim 1, characterized in that: The positioning ring (31) is annularly sealed with a sealing skirt (32), and the end of the sealing skirt (32) is connected to the airbag body (33). The positioning ring (31) is provided with a guide groove (36), and a movable block (35) is slidably connected inside the guide groove (36). The top of the movable block (35) extends out of the guide groove (36) and is fixedly connected to the airbag body (33). The middle part of the movable block (35) is provided with a thread. One end of the guide groove (36) is fixedly connected to a servo motor (37), and a lead screw (38) is fixedly connected to the output shaft of the servo motor (37). The lead screw (38) meshes with the thread of the movable block (35).

5. The intestinal cleansing and nursing device for pre-endoscopic examination in gastroenterology according to claim 1, characterized in that: One end of the airbag body (33) is connected to an air supply pipe (42), the end of the air supply pipe (42) is adapted to the inflation port (27), a second data line (43) is embedded in the air supply pipe (42), one end of the second data line (43) is connected to the electrical signal of the servo motor (37), and the other end of the second data line (43) extends out from the tail of the air supply pipe (42).

6. The intestinal cleansing and nursing device for pre-endoscopic examination in gastroenterology according to claim 1, characterized in that: One end of the first data line (16) is electrically connected to the flow sensor (11), and the other end of the first data line (16) extends out of the surface of the cleaning tube (10) and is located at the tail of the cleaning tube (10).

7. The intestinal cleansing and nursing device for pre-endoscopic examination in gastroenterology according to claim 4, characterized in that: The outer end of the fixing ring (13) is provided with a slot (15), and the inner side of the positioning ring (31) is provided with a groove (39). A spring (40) is fixedly connected in the groove (39), and a block (41) is fixedly connected to the end of the spring (40). The top of the block (41) is hemispherical, and the block (41) is adapted to the slot (15).

8. The intestinal cleansing and nursing device for pre-endoscopic examination in gastroenterology according to claim 1, characterized in that: The first data line (16) is adapted to the first data interface (25), and the second data line (43) is adapted to the second data interface (26). Both the first data interface (25) and the second data interface (26) are electrically connected to the central processing unit.

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