Three-module split type wireless portable bedside gastroscope system

Abstract

The application discloses a three-module split type wireless portable bedside gastroscope system, which belongs to a digestive endoscope instrument and is composed of a handle insertion tube, a miniature air and water feeding unit and a wireless display terminal. The three modules are independently powered and wirelessly interconnected, and the whole machine is less than 5 kg and is waterproof and can be fully soaked for disinfection. The front end is provided with a quick-release double-mode LED light source, white light 600 lumens and 450 nm blue light for realizing mucosa microvessel enhanced imaging and preventing mucosa thermal damage through double-stage temperature control. The system is provided with a back-illuminated high-sensitivity CMOS, 720P / 60fps weak light imaging is clear, the independent air and water feeding unit is small, pressure and flow can be adjusted and double overpressure protection is achieved, the handle wireless transmission delay is less than 50 ms, the tablet terminal is light in weight, and the system supports image acquisition, magnification measurement and report generation. The equipment is free from a traditional large main machine, has early cancer screening and biopsy diagnosis and treatment functions, is low in operation and maintenance cost, and is suitable for bedside examination scenes such as emergency, ICU, primary screening, home visiting and the like.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a digestive endoscopy examination device, and more particularly to a portable bedside gastroscopy system that adopts a three-module split architecture, wireless transmission, front-end high-brightness LED lighting, and independent air and water delivery control. Background Technology

[0002] Traditional electronic gastroscopy systems generally adopt an integrated main unit design, combining functional modules such as a cold light source, image processor, air pump, water pump, and negative pressure suction. These systems are bulky, weighing 50-100 kg, making mobile deployment difficult and typically limiting their use to fixed endoscopy centers. Currently, my country's digestive endoscopy resources are highly concentrated in tertiary hospitals. Primary healthcare institutions, emergency departments, nursing homes, and remote areas generally lack usable endoscopic equipment. Acute upper gastrointestinal bleeding, esophageal foreign body impaction, and other emergencies have clear golden treatment windows. Patient transport carries risks such as worsening of condition, suffocation, and hemorrhagic shock. Bedside endoscopy is a crucial means of reducing emergency mortality. However, traditional integrated gastroscopy systems, due to their size and weight limitations, cannot be rapidly deployed, becoming a core hardware bottleneck restricting the widespread adoption of bedside digestive endoscopy and failing to meet the diverse needs of emergency bedsides, ICUs, home healthcare, and primary care screening.

[0003] Existing traditional gastroscopy systems have several technical shortcomings: Firstly, relying on optical fiber to transmit cold light sources results in high optical path transmission loss, requiring the configuration of high-power light source equipment. Furthermore, the fiber bundle occupies a large amount of space inside the scope, limiting the layout of the biopsy channel and functional channels. Fibers are also prone to breakage, requiring the entire scope to be returned to the factory for repair after a breakage. This process is time-consuming and costly, making it difficult to meet the low-cost operation and maintenance needs of grassroots institutions.

[0004] Secondly, the connection between the handle and the main unit consists of multiple cables, including video cables, light source cables, and air and water pipes. This not only restricts the freedom of operation, but also makes it easy for contaminants to remain in the cable sheaths and joint gaps during the cleaning and disinfection process. This is a high-risk link for cross-infection related to endoscopes and does not meet the disinfection requirements of full immersion and no dead angles in the disinfection specifications for flexible endoscopes.

[0005] Third, the digestive tract cavity has a strong ability to absorb light, and traditional systems show obvious noise in low-light environments, resulting in insufficient image detail recognition.

[0006] Fourth, narrowband imaging requires special filters or laser light sources, which have high technical barriers and expensive equipment, making it difficult to popularize in primary healthcare institutions.

[0007] Although portable endoscope products such as disposable electronic gastroscopes and mobile endoscopes have emerged in recent years, they still have many shortcomings: the illumination brightness is too low, resulting in dark images inside the gastric cavity; the delivery of air and water depends on the main unit or manual operation, and cannot be controlled independently and accurately, and insufficient gastric filling can easily lead to missed lesions; the wireless transmission is unstable, with delay and frame loss problems, affecting the operation feel and diagnostic accuracy; most of them do not have narrowband imaging function, and cannot enhance the observation of mucosal microvessels and glandular structures, making it difficult to meet the screening needs of early gastric cancer and esophageal cancer, which is one of the core demands of primary care and home healthcare scenarios. Current portable endoscopes generally lack sufficient waterproof rating, allowing only surface wiping or partial immersion, making it impossible to achieve proper disinfection of the entire tubing and body. Reuse poses a risk of cross-infection. Image sensor performance is limited, with resolution mostly at the VGA level, resulting in poor noise control at high sensitivity and an inability to identify fine mucosal structures. While disposable endoscopes avoid disinfection issues, their high cost per unit makes them difficult to use on a large scale for population screening. Furthermore, their limited functionality prevents them from supporting basic treatment procedures such as biopsy and hemostasis, thus restricting their clinical applicability.

[0008] Therefore, developing a truly wireless, portable, high-brightness, high-definition imaging, early cancer screening capability, and fully immersion-sterilizable bedside gastroscopy system has significant clinical application value and market potential. Summary of the Invention

[0009] This invention aims to overcome the shortcomings of existing technologies and solve the technical problems of traditional gastroscopy systems, such as bulky size making bedside deployment impossible, high fiber optic transmission loss and easy damage, inconvenient operation and infection risk due to wired connections, poor imaging quality in low light, high cost of narrowband imaging, and insufficient brightness, incomplete functions, and inadequate disinfection of existing portable endoscopes. It provides a three-module split wireless portable bedside gastroscopy system, which realizes wireless, portable, and scenario-based deployment of the device, while ensuring high-definition imaging quality, early cancer screening capabilities, and disinfection safety.

[0010] To achieve the above objectives, the present invention provides the following technical solution: A three-module split-type wireless portable bedside gastroscopy system consists of three independent functional modules: a wireless gastroscopy operating handle and insertion tube module, an independent miniature air and water supply control unit, and a portable wireless display terminal. There are no physical cables or optical fiber connections between the three modules. Each module is powered independently and works together through wireless communication. The system as a whole has no optical fiber light source structure, the total weight does not exceed 5kg, the waterproof rating of the parts in contact with the human body is not less than IPX8, and it complies with the technical specifications for cleaning and disinfection of flexible endoscopes.

[0011] Furthermore, the handle body of the wireless gastroscopy operating handle and insertion tube module is equipped with a battery compartment, a camera button, an angle adjustment knob, an air / water supply button, an air / water inlet, a suction port, and a biopsy channel inlet; the insertion tube has an outer diameter of 8.8mm~9.2mm and integrates a biopsy channel, an independent air / water supply channel, a suction channel, and a four-way angled steel wire; the front end face of the insertion tube integrates a switchable working mode light source module, a high-sensitivity CMOS image sensor, a front biopsy port, and an air / water supply nozzle.

[0012] Furthermore, the light source module is an integrated LED module, possessing at least two operating modes: White light illumination mode, outputting white light with a color temperature of 5500K±500K, used for routine digestive tract examinations; The narrowband enhancement imaging mode outputs only blue light with a center wavelength of 450±5nm to enhance the visualization of microvessels and glandular structures on the mucosal surface.

[0013] Furthermore, the total luminous flux of the light source module in white light mode is 600 lumens ±10%, and the peak operating power is ≤1.5W; in narrowband enhanced imaging mode, the peak power of blue light is ≤1.2W, and the half-width is ≤20nm.

[0014] Furthermore, the light source module incorporates a cooling system and dual temperature sensors and a temperature overload protection circuit, providing a dual temperature protection mechanism. The low-power LED lamp combination water cooling system can keep this endoscope system operating continuously below 35°C. When the monitored temperature exceeds 40℃, the LED drive power is automatically reduced. When the monitored temperature reaches or exceeds 42℃, immediately cut off the LED power supply, and ensure that the working temperature of the front surface does not exceed 42℃.

[0015] Furthermore, the light source module is a quick-release independent structure, which can be quickly disassembled and assembled through elastic buckles, positioning grooves and spring pins without disassembling the main body of the lens. The replacement time for a single module is ≤30 seconds. The module is equipped with a medical silicone sealing ring, and still maintains the IPX8 waterproof rating after disassembly and assembly.

[0016] Furthermore, the high-sensitivity CMOS image sensor has a back-illuminated structure, a photosensitive diameter ≤2.0mm, an effective resolution of 1280×720, and a frame rate of 60fps; it supports extended sensitivity up to ISO 12800, readout noise ≤2.5e⁻, dynamic range ≥72dB, and minimum illumination ≤0.1Lux.

[0017] Furthermore, the independent miniature air and water supply control unit has a power switch, a pressure gauge, and a pressure adjustment knob on its front panel; the unit integrates a pressure adjustment unit, a miniature air pump unit, a battery unit, and a circuit control unit, with dimensions of 10cm×15cm×20cm and a total weight of ≤2.0kg; it has a built-in miniature oil-free air pump and a sterile water storage bottle, with an adjustable air supply pressure range of 20~60kPa and an adjustable water supply flow rate range of 0.5~2.0mL / s, and features a dual overpressure protection mechanism.

[0018] Furthermore, the wireless gastroscopy operating handle has a built-in image processing unit and a wireless transmission unit, supporting multiple wireless communication protocols such as WiFi 6 / 7, 5G, UWB, and Bluetooth; the end-to-end image transmission latency is ≤50ms, the indoor unobstructed transmission distance is ≥10 meters, and it supports automatic reconnection after disconnection.

[0019] Furthermore, the portable wireless display terminal is a tablet device, weighing ≤1.0kg, with a built-in high-definition touch screen display, supporting real-time image display, freeze, photo taking, video recording, electronic magnification and parameter measurement functions; the terminal has a battery life of ≥6 hours and supports both bedside bracket fixing and handheld use.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. It features an innovative three-module split wireless architecture, completely abandoning the traditional all-in-one host. The three modules are independently powered and wirelessly coordinated, with the total weight of the whole machine not exceeding 5kg. It can be quickly deployed in scenarios such as emergency bedside, ICU, home medical care, and primary screening, breaking through the limitation that traditional endoscopes can only be used in fixed centers.

[0021] 2. It adopts a front-end direct-drive LED light source solution, with no optical fiber throughout the entire process, resulting in higher light efficiency and no transmission loss. The 600 lumens of clear light brightness is 3-5 times higher than that of traditional portable endoscopes, solving the problem of strong light absorption in the gastric cavity and dark images. The narrow-band imaging effect can be simulated through blue LEDs, eliminating the need for expensive filters or lasers, and significantly reducing the equipment threshold for early cancer screening.

[0022] 3. Equipped with a back-illuminated high-sensitivity CMOS sensor, it features 720p high-definition resolution and a maximum ISO of 12800. Combined with a low-noise readout circuit and hardware noise reduction processing, the readout noise is ≤2.5e⁻. Even in low-light environments in the digestive tract, it can still present low-noise, high-definition images, ensuring the ability to identify the fine structures of the mucosa and meeting the needs of early cancer screening.

[0023] 4. The light source module adopts a quick-release structure, which can be replaced in 30 seconds. It is convenient to maintain, low in cost, and can effectively extend the service life of the whole machine. It has a built-in dual temperature protection mechanism of power reduction at 40℃ and power cut-off at 42℃. The response speed is fast and completely eliminates the risk of mucosal thermal damage.

[0024] 5. The independent miniature air and water delivery unit is compact and can be moved independently. The panel integrates air pressure display and pressure adjustment components, making operation intuitive and convenient. It does not rely on a central air supply system and can be used at the bedside. The parameters have a wide adjustable range to adapt to different clinical operation needs, and dual overpressure protection ensures safe use.

[0025] 6. The core components of the entire machine reach the IPX8 waterproof rating, supporting full immersion disinfection with no blind spots, effectively avoiding the risk of cross-infection, and meeting the requirements of endoscope disinfection standards.

[0026] 7. The overall cost of the system is significantly lower than that of traditional gastroscopy systems, making it easier for medical institutions at all levels to adopt it. At the same time, it provides a feasible equipment foundation for home medical services, services in elderly care institutions, and mobile medical services in remote areas. Attached Figure Description

[0027] Figure 1 is a left-side view of the wireless gastroscope operating handle and insertion tube module of the present invention; Figure 2 is a schematic diagram of the end face structure of the first upright end of the insertion tube of the present invention; Figure 3 is a front panel view of the independent micro air and water supply control unit of the present invention; Figure 4 is a schematic diagram of the internal structure of the independent micro air and water supply control unit of the present invention; Figure 5 is a schematic diagram of the software interface of the portable wireless display terminal of the present invention; Figure 6 is a flowchart of the dual temperature protection mechanism for the light source of the present invention; Figure 7 is a logic diagram of the system working mode switching of the present invention. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] This invention proposes a three-module split-type wireless portable bedside gastroscopy system, which consists of three independent, wirelessly connected functional modules: a wireless gastroscopy operating handle and insertion tube module, an independent miniature air and water delivery control unit, and a portable wireless display terminal. There are no physical cables, optical fibers, or rigid air circuit connections between the three modules; each has its own independent power supply unit and works collaboratively via wireless communication. The system as a whole abandons the optical fiber light source structure, with all illumination provided by front-end electrically driven LEDs. The total weight of the entire device does not exceed 5kg. All parts in contact with the human body comply with the technical specifications for cleaning and disinfection of flexible endoscopes, and the waterproof rating is no less than IPX8.

[0030] As shown in Figure 1, the wireless gastroscope operating handle and insertion tube module is the endoscope body 1. The handle body integrates a battery compartment 2, a camera button 3, an angle adjustment knob 4, an air and water supply button 5, an air and water inlet 6, a suction hole 7, and a biopsy channel inlet 8.

[0031] Battery compartment 2 houses a built-in rechargeable battery that powers the entire handle. Camera button 3 triggers image capture and video recording. Angle adjustment knob 4 connects to an internal four-way angle wire to control the bending and turning of the insertion tube. Air / water supply button 5 activates the air / water supply unit via wireless signal. Air / water inlet 6 connects to the air / water supply unit via a sterile hose. Suction port 7 can be connected to a ward negative pressure system for secretion aspiration. Biopsy channel inlet 8 is used to insert biopsy forceps, foreign body forceps, and other diagnostic instruments.

[0032] Furthermore, the outer diameter of the insertion tube is 9.0mm±0.2mm, and the length is 1200mm±50mm. It adopts a woven mesh structure made of medical-grade polyetheretherketone or polyurethane material. The tube body integrates a biopsy channel with an inner diameter of 2.8mm, independent air and water supply channels, a suction channel, and four-directional angled steel wires, which can control the front end 9 to achieve bending angles of 210° upward, 90° downward, 100° left, and 100° right.

[0033] As shown in Figure 2, the front end 9 of the insertion tube has a diameter of 9.0 mm and integrates an LED light source module 10, a CMOS image sensor 12, a front biopsy hole 11, and an air and water delivery nozzle 13.

[0034] The air and water nozzle 13 is directed toward the sensor lens, and can spray air and water to clean the lens surface and maintain a clear field of view; the front biopsy hole 11 is connected to the biopsy channel entrance 8 at the handle, allowing the diagnostic instrument to extend.

[0035] Furthermore, the LED light source module 10 is an integrated LED module, using chip-level packaging or on-board chip packaging, with a thermal resistance ≤3℃ / W, and has two switchable operating modes: White light illumination mode: White LED color temperature 5500K±500K, color rendering index ≥90, total luminous flux 600 lumens ±10%, peak operating power 1.5W, rated continuous operating power 1.2W, used for routine digestive tract examinations; Narrowband Enhanced Imaging Mode: Only the blue light channel operates, with a main blue light wavelength of 450±5nm, a half-width of ≤20nm, and a peak power of 1.2W. It can simulate the narrowband imaging effect and is used to enhance the display of microvessels and glandular structures on the mucosal surface, assisting in the screening of early lesions.

[0036] The LED light source module 10 has a built-in dual temperature protection mechanism: The lens is equipped with a medical-grade 304 stainless steel base, a cold water cooling system, and dual temperature sensors to monitor the temperature of the LED light-emitting surface and the front shell, along with a temperature overload protection circuit. Ensure the lens temperature does not exceed 40℃ within 0.5 hours of stable operation; When the monitored temperature exceeds 40℃, the first-level protection is triggered, automatically reducing the LED drive power to maintain temperature stability; When the monitored temperature reaches or exceeds 42℃, the secondary protection is triggered, and the power supply to the LED is immediately cut off. The protection response time is ≤100ms, ensuring that the surface temperature of the first-standing end 9 will not cause thermal damage to the human mucous membrane.

[0037] The LED light source module 10 is a quick-release independent structure, using a flexible buckle and positioning groove for fixing. Electrical connection is achieved through a gold-plated spring pin, with a contact resistance ≤50mΩ. It is equipped with a medical silicone sealing ring with a compression rate of 25%-30%. When replacing, the buckle can be opened with a special fine needle to remove it without disassembling the main body of the lens. The replacement time for a single module is ≤30 seconds, and the IPX8 waterproof rating is maintained after disassembly and assembly.

[0038] Furthermore, the CMOS image sensor 12 has a back-illuminated pixel structure with a photosensitive diameter ≤2.0mm, which is suitable for the compact installation space of the 9mm insertion tube front end; the effective resolution is 1280×720, the pixel size is 1.4μm×1.4μm, the frame rate is 60fps, and it supports global shutter and rolling shutter switching.

[0039] The sensor's sensitivity range can automatically adapt to the low-light environment of the digestive tract, with a basic sensitivity of ISO 400~3200 and support for extended sensitivity up to ISO 12800. By improving quantum efficiency through back-illuminated technology, coupled with low-noise readout circuitry and on-chip hardware noise reduction processing, the readout noise is ≤2.5e⁻, dark current is ≤30e⁻ / s, dynamic range is ≥72dB, and minimum illumination is ≤0.1Lux in ISO 12800 mode, enabling clear imaging with low noise in the high-absorption, low-reflection cavities of the digestive tract.

[0040] The sensor has built-in image processing functions such as automatic exposure, automatic white balance, defect pixel correction, and lens shading correction. It supports MIPI CSI-2 or LVDS data interfaces and outputs data in multiple formats such as RAW, YUV, and RGB. The continuous working power consumption is ≤150mW and the standby power consumption is ≤1mW.

[0041] Furthermore, the wireless gastroscopy operating handle incorporates an image processing unit and a wireless transmission unit: The image processing unit is a dedicated ISP chip that supports H.265 hardware encoding and is optimized for 720p / 60fps video streams; The wireless transmission unit supports multiple wireless communication protocols such as WiFi 6 / 7, 5G / 6G, UWB, and Bluetooth 5.3 / 5.4, and has a built-in dual-antenna MIMO architecture. The end-to-end image transmission latency is ≤50ms, the indoor unobstructed transmission distance is ≥10 meters, and it has an automatic frequency hopping and QoS priority guarantee mechanism. It can automatically reconnect within 3 seconds after the signal is interrupted.

[0042] The built-in battery compartment 2 of the controller holds a 7.4V / 5000mAh lithium polymer battery, providing ≥2 hours of continuous operation in white light mode. It supports wireless charging and magnetic charging via contact points and features a four-segment LED power indicator.

[0043] As shown in Figures 3 and 4, the independent miniature air and water supply control unit 14 is an independent small device that only performs air and water supply functions. The negative pressure suction can be connected to the existing central negative pressure system in the ward or to an external portable negative pressure suction device.

[0044] The front panel of the unit is equipped with a power switch 15, a pressure gauge 16 and a pressure adjustment knob 17. The power switch 15 controls the power supply of the whole unit, the pressure gauge 16 displays the current output air pressure in real time, and the pressure adjustment knob 17 is used to continuously adjust the air supply pressure and water supply flow rate.

[0045] The unit integrates a pressure regulating unit 18, a miniature air pump unit 19, and a circuit control unit 20 from top to bottom. It also includes a built-in 500ml sterile water bottle and an electronic flow regulating valve. The pressure regulating unit 18 contains a mechanical safety valve and a pressure sensor. The miniature air pump unit 19 provides a stable air supply, and the circuit control unit 20 is responsible for the overall power supply control and wireless signal interaction. The unit's dimensions are 10cm × 10cm × 20cm, and the overall weight is ≤2.0kg. The outer shell is made of medical-grade antibacterial ABS plastic. The miniature air pump unit 19 has an air flow rate ≥3L / min and a service life ≥5000 hours.

[0046] The unit's air delivery pressure is adjustable from 20 to 60 kPa, with a clinically optimized range of 30 to 40 kPa; the water delivery flow rate is adjustable from 0.5 to 2.0 mL / s, with a clinically optimized range of 1.0 to 1.5 mL / s; it features dual overpressure protection with a mechanical safety valve and an electronic pressure sensor, automatically releasing pressure when it reaches ≥65 kPa; after triggering the air / water delivery button 5 on the handle, the response time for air and water delivery is ≤200 ms. The unit and handle's air and water inlets 6 are connected via a detachable sterile silicone hose, 1.0-2.0 m in length; a mechanical emergency interface is provided on the side of the handle for connecting a manual inflator; it has a built-in 7.2V / 5000mAh lithium battery pack, providing ≥8 hours of intermittent operation; an LCD screen can be configured next to the pressure gauge 16 to display real-time battery level, air pressure, and water pressure parameters.

[0047] Furthermore, the portable wireless display terminal is a tablet device with a total weight of ≤1.0kg; it is equipped with a 10.1-inch to 12.4-inch high-definition IPS touch screen with a resolution of not less than 1920×1200, a screen brightness of ≥400cd / m², and supports 10-point capacitive touch and operation with medical gloves.

[0048] The terminal is equipped with an 8-core ARM architecture processor with a main frequency of ≥2.0GHz, supporting 720p / 60fps video hardware decoding; it has 4GB RAM and 64GB ROM, and supports storage expansion; it has a built-in high-performance wireless network card, supporting WiFi 6 / 7 dual-band concurrent, 5G and Bluetooth 5.3.

[0049] The terminal software supports real-time preview, freeze, photo taking, and video recording of endoscopic images. It also supports brightness adjustment, 1-4x electronic magnification, and length, angle, and area measurement functions. Patient medical records can be overlaid to automatically generate PDF graphic reports, and remote upload via HL7 and FTP protocols is supported.

[0050] The device supports three usage modes: bedside tripod mounting, desktop stand placement, and handheld use; it has a built-in 7.4V / 8000mAh lithium polymer battery, providing continuous use for ≥6 hours, and supports USB-C PD fast charging and simultaneous charging and use.

[0051] Furthermore, all parts of the system that come into contact with the human body comply with the "Technical Specifications for Cleaning and Disinfection of Flexible Endoscopes" (WS 507-2016) and ISO 15883 series standards. They can withstand full immersion disinfection with multi-enzyme cleaning solutions, 2% glutaraldehyde, 0.55% o-phthalaldehyde, 0.2%-0.35% peracetic acid, and hydrogen peroxide silver ion disinfectant. The overall waterproof rating reaches IPX8, and it can be continuously immersed in 1 meter of water for more than 30 minutes.

[0052] The handle shell is sealed with ultrasonic welding and a silicone sealing ring, the buttons are made of one-piece silicone button caps, and the power interface adopts a compartment-type waterproof connector structure, which is waterproof even when not plugged in.

[0053] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0054] Example 1: Wireless gastroscopy operating handle and insertion tube module This module, namely the endoscope body 1, consists of the operating handle and the insertion tube. The insertion tube has an outer diameter of 9.0 mm and a length of 1200 mm. It adopts a medical-grade polyurethane woven mesh structure, which combines flexibility and torque transmission performance. The insertion tube integrates three independent channels and a set of angle wires: the biopsy channel has an inner diameter of 2.8 mm, which is compatible with standard biopsy forceps, foreign body forceps, injection needles and other diagnostic and therapeutic instruments. Its two ends are connected to the biopsy channel inlet 8 and the front biopsy port 11, respectively. The air supply channel and the water supply channel are independent of each other and isolated from the biopsy channel. Their two ends are connected to the air and water inlet ports 6 and the air and water supply nozzles 13, respectively. The suction channel is connected to the suction port 7 and the front suction port. The four-way angle wire connects the angle adjustment knob 4 and the upright end 9, which can control the bending angle of the front end of the insertion tube to 210° up, 90° down, 100° left and 100° right to meet the observation needs of various parts of the stomach.

[0055] The front end 9 of the insertion tube has a diameter of 9.0 mm and integrates four functional units according to their orientation: LED light source module 10 is located in the upper right position of the center, CMOS image sensor 12 is located in the lower right position of the center, front biopsy hole 11 is located in the lower left position of the center, and air and water delivery nozzle 13 is located in the upper left position of the center. The nozzle faces the sensor lens and can realize lens rinsing.

[0056] The LED light source module 10 adopts a COB package with a thermal resistance ≤3℃ / W. It integrates white and blue LED chips and has two operating modes: In white light mode, the color temperature is 5500K, the color rendering index is 92, the total luminous flux is 600 lumens, and the rated operating power is 1.2W. It can work continuously for a long time and is used for routine observation of the digestive tract mucosa. In narrowband enhancement mode, only the blue light channel works, with a center wavelength of 450nm, a half-width of 18nm, and a peak power of 1.2W. This mode can enhance the contrast of microvessels and glandular structures on the mucosal surface and assist in early gastric cancer screening.

[0057] As shown in Figure 6, the LED light source module 10 has a built-in dual-channel NTC temperature sensor, which is attached to the LED light-emitting surface and the inner wall of the front housing respectively. Combined with the overload protection circuit, it forms a dual temperature protection: during normal operation, the surface temperature of the first end 9 is controlled within 40℃; when the monitored temperature exceeds 40℃, the first-level protection is triggered, and the drive circuit automatically reduces the output power to maintain temperature stability; when the monitored temperature reaches 42℃, the second-level protection is triggered, the power supply circuit is immediately cut off, and the light source is forcibly shut down. The protection response time is ≤100ms, avoiding damage to the mucous membrane caused by high temperature contact throughout the process.

[0058] The LED light source module 10 is an independent quick-release assembly. The front end of the endoscope features a positioning groove and a spring-loaded buckle, while the rear end has a gold-plated spring pin with a contact resistance ≤40mΩ. A medical-grade silicone sealing ring with a compression rate of 28% is fitted around the outer edge of the module. To replace the module, insert a special fine needle into the top hole on the side of the endoscope to pry open the spring-loaded buckle and remove the old module. Align the new module with the positioning groove and push it in; the buckle will automatically lock, completing the replacement process in ≤30 seconds. No disassembly of the endoscope is required, and the sealing performance still meets IPX8 requirements after installation and removal.

[0059] The CMOS image sensor 12 employs a back-illuminated pixel structure with a photosensitive diameter of 1.8mm, adaptable to compact front-end spaces. It boasts an effective resolution of 1280×720, pixel size of 1.4μm×1.4μm, a frame rate of 60fps, and supports rolling shutter mode. The sensor's basic ISO range is 400-3200, adjusted in real-time by automatic gain control. For low-light scenarios deep within the gastric cavity, an extended mode can be enabled, supporting up to ISO 12800. The back-illuminated process achieves a quantum efficiency of 78% (550nm band), coupled with a low-noise readout circuitry (readout noise ≤2.3e⁻), built-in 3D hardware noise reduction and spatiotemporal filtering algorithms, dark current ≤25e⁻ / s, dynamic range of 75dB, and a minimum illumination of 0.08Lux, maintaining clean and clear images even at high ISO, capable of discerning subtle mucosal textures. The sensor features built-in automatic area exposure, automatic white balance, bad pixel correction, and lens shading correction functions. It outputs MIPI CSI-2 format signals and supports 10-bit RAW and YUV422 formats. Continuous power consumption is 130mW, standby power consumption is 0.8mW, and it can be quickly woken up.

[0060] The controller integrates a dedicated ISP image processing chip, supporting H.265 hardware real-time encoding and optimized for 720p / 60fps video streams. It features a WiFi 6 wireless module with a dual-antenna MIMO architecture, supporting automatic frequency hopping and QoS priority settings. The end-to-end image transmission latency is 40ms, with an unobstructed indoor transmission distance of 12 meters. It automatically reconnects within 2.5 seconds after signal interruption. The controller's battery compartment 2 houses a 7.4V / 5000mAh high-energy-density lithium polymer battery, providing 2.5 hours of continuous white light operation. It supports Qi wireless charging and magnetic contact charging, and a four-segment LED indicator at the rear of the controller displays the remaining battery level.

[0061] Example 2: Independent Miniature Air and Water Supply Control Unit This unit, the independent miniature air and water supply control unit 14, is an independent cuboid device with dimensions of 10cm × 15cm × 20cm and a weight of 1.8kg. The casing is made of medical-grade antibacterial ABS material. The front panel features a power switch 15, a pressure gauge 16, and a pressure adjustment knob 17, allowing medical personnel to visually view the pressure status and adjust parameters. Inside the unit, from top to bottom, are a 500ml sterile polycarbonate water bottle, a pressure regulation unit 18, a miniature air pump unit 19, and a circuit control unit 20. The pressure regulation unit 18 includes an electronic flow control valve and a mechanical safety valve; the miniature air pump unit 19 provides compressed air; and the circuit control unit 20 is responsible for power management, pressure monitoring, and wireless signal interaction.

[0062] The miniature air pump unit 19 has a rated flow rate of 3.5 L / min and a service life of 6000 hours. The air delivery pressure is continuously adjustable via the pressure regulating knob 17 and an electronic valve, ranging from 20-60 kPa, with a clinically standard setting of 35 kPa. The water delivery flow rate is adjustable from 0.5-2.0 mL / s, with a standard setting of 1.2 mL / s. The unit is equipped with dual overpressure protection, consisting of a mechanical safety valve and an electronic pressure sensor. When the pressure reaches 65 kPa, the safety valve automatically releases pressure, and the electronic system simultaneously triggers an alarm and reduces the air pump power.

[0063] The unit connects to the air and water inlet 6 on the handle via a 1.5m long sterile silicone hose. The hose can be detached and sterilized separately. The air and water supply button 5 on the handle triggers the opening and closing of the solenoid valve inside the unit via a wireless signal, with a response time of 180ms. The suction hole 7 on the side of the handle can be connected to a central negative pressure system. In case of power failure or malfunction, a manual inflation ball can be connected to complete basic air supply operations. The unit has a built-in 14.8V / 5000mAh 18650 lithium battery pack, providing up to 9 hours of continuous operation in intermittent working mode. A small LCD screen is located next to the pressure gauge 16, displaying the current air pressure, water pressure, and remaining battery power in real time, and supporting low battery reminders.

[0064] Example 3: Portable Wireless Display Terminal As shown in Figure 5, this terminal is a medical tablet device, weighing 0.85kg. It features a 10.4-inch IPS touchscreen with a resolution of 2000×1200 and a screen brightness of 450cd / m². It supports touch operation while wearing medical gloves and is IP67 waterproof.

[0065] The device is equipped with an 8-core ARM processor with a main frequency of 2.2GHz, 4GB of RAM and 64GB of internal storage, and supports 720p / 60fps video hardware decoding; it also has a built-in WiFi 6 / 7 dual-band wireless network card and Bluetooth 5.3 module, with an optional 5G communication module.

[0066] The terminal comes pre-installed with endoscopy operation software. The main interface displays the endoscopic image in real time and supports picture-in-picture mode. The sidebar includes options such as image freeze, photo capture, video recording, brightness adjustment, electronic magnification, and measurement tools. The electronic magnification supports 1-4x stepless scaling, and the measurement tools can perform length, angle, and area calculations. After calibration, the accuracy meets clinical needs. The software supports inputting patient name, ID, examination time, and other information, which can be overlaid on the screen and report. After the examination, a PDF graphic report is automatically generated, and it supports uploading to the hospital information system via the hospital network using the HL7 protocol.

[0067] The device comes with a foldable bedside tripod and desktop stand, and can also be operated by hand. It has a built-in 7.4V / 8000mAh lithium polymer battery, which provides up to 7 hours of continuous use. It supports USB-C PD fast charging, and can restore 50% of the battery capacity in 30 minutes. It can also be used while charging.

[0068] Example 4: Disinfection and Waterproofing Performance All parts of this system that come into contact with the human body comply with the requirements of the "Technical Specifications for Cleaning and Disinfection of Flexible Endoscopes" (WS 507-2016). The handle and insertion tube have an overall waterproof rating of IPX8, and no leakage was detected after immersion in 1 meter of water for 30 minutes. The handle shell is assembled using ultrasonic welding technology, with built-in silicone sealing rings at the seams; all buttons have a one-piece silicone cap structure with no assembly gaps; the charging interface uses a compartmentalized stainless steel waterproof socket, with the socket body completely isolated from the internal circuitry, and a blind hole structure at the front end, so even if liquid enters the blind hole, it cannot penetrate into the internal circuitry, and it still has complete waterproof capability when the charging cable is not plugged in. The disinfection process follows the standard requirements: after the inspection, the bedside surface is first wiped for pretreatment, then placed in an automatic endoscope cleaning and disinfection machine or manually cleaned with multiple enzymes, followed by full immersion disinfection in 0.55% phthalic acid disinfectant solution, rinsed with sterile water, and dried before use; there are no dead corners in the disinfection process, which can effectively kill pathogenic microorganisms and avoid the risk of cross-infection.

[0069] Example 5: Clinical Application Scenarios Scenario 1: Emergency Bedside Examination. A patient admitted to the emergency room due to upper gastrointestinal bleeding cannot be transferred to the endoscopy center. Medical staff bring this system to the bedside, fix the display terminal to the bedside bracket, place the independent miniature air and water delivery control unit 14 on the bedside table, and connect the handle to the sterile tubing to start operation. The entire process does not require moving the patient, and the gastric cavity examination can be completed within 5 minutes, clarifying the bleeding site and cause. If necessary, hemostasis treatment can be performed through the biopsy channel. Scenario 2: Early Gastric Cancer Screening in Township Health Centers. When conducting early gastric cancer screening in township health centers, the white light mode of this system is used to complete a routine full gastric observation. After discovering suspicious lesions, a one-click switch to narrow-band enhancement mode is made. High-definition, high-sensitivity imaging clearly displays the microvascular and glandular morphology of the lesion area. Combined with biopsy operations, pathological sampling is completed, effectively improving the early cancer detection rate at the grassroots level. Scenario 3: Home-based elderly care services. Community medical staff carry this system to provide examination services for elderly patients with limited mobility. The system weighs less than 5kg, making it easy to carry. All three modules have built-in batteries, so it can work without an external power source. A single charge can complete the examination of 8-10 patients. After the examination, the handle can be disinfected by soaking in a portable disinfection device, which meets the disinfection needs of home-based services.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A three-module, split-type, wireless, portable bedside gastroscopy system, characterized in that, It consists of three independent functional modules: a wireless gastroscope operating handle and insertion tube module, an independent miniature air and water supply control unit, and a portable wireless display terminal. There are no physical cables or optical fiber connections between the three modules. Each module is powered independently and works together through wireless communication. The system as a whole has no optical fiber light source structure, the total weight does not exceed 5kg, the waterproof rating of the parts in contact with the human body is not less than IPX8, and it complies with the technical specifications for cleaning and disinfection of flexible endoscopes.

2. The three-module split-type wireless portable bedside gastroscopy system according to claim 1, characterized in that, The wireless gastroscopy operating handle and insertion tube module have a battery compartment, a camera button, an angle adjustment knob, an air / water supply button, an air / water inlet, a suction port, and a biopsy channel inlet on the handle body. The insertion tube has an outer diameter of 8.8mm to 9.2mm and integrates a biopsy channel, independent air / water supply channels, a suction channel, and four-way angled steel wires. The front end face of the insertion tube integrates a switchable working mode light source module, a high-sensitivity CMOS image sensor, a front biopsy port, and an air / water supply nozzle.

3. The three-module split-type wireless portable bedside gastroscopy system according to claim 2, characterized in that, The light source module is an integrated LED module with at least two working modes: white light illumination mode, which outputs white light with a color temperature of 5500K±500K for routine gastrointestinal examinations; and narrow-band enhanced imaging mode, which outputs only blue light with a center wavelength of 450±5nm to enhance the display of microvessels and glandular structures on the mucosal surface.

4. The three-module split-type wireless portable bedside gastroscopy system according to claim 3, characterized in that, The total luminous flux of the light source module in white light mode is 600 lumens ±10%, and the peak operating power is ≤1.5W; in narrowband enhanced imaging mode, the peak power of blue light is ≤1.2W, and the half-width is ≤20nm.

5. The three-module split-type wireless portable bedside gastroscopy system according to claim 2, characterized in that, The light source module has a built-in cooling system and dual temperature sensors and a temperature overload protection circuit, providing a dual temperature protection mechanism: The low-power LED lamp combination water cooling system can keep this endoscope system operating continuously below 35°C. When the monitored temperature exceeds 40℃, the LED drive power is automatically reduced. When the monitored temperature reaches or exceeds 42℃, immediately cut off the LED power supply, and ensure that the working temperature of the front surface does not exceed 42℃.

6. The three-module split-type wireless portable bedside gastroscopy system according to claim 2, characterized in that, The light source module is a quick-release independent structure, which can be quickly disassembled and assembled through elastic buckles, positioning grooves and spring pins without disassembling the main body of the lens. The replacement time of a single module is ≤30 seconds. The module is equipped with a medical silicone sealing ring, and still maintains the IPX8 waterproof rating after disassembly and assembly.

7. The three-module split-type wireless portable bedside gastroscopy system according to claim 2, characterized in that, The high-sensitivity CMOS image sensor has a back-illuminated structure, a photosensitive diameter ≤2.0mm, an effective resolution of 1280×720, and a frame rate of 60fps; it supports extended sensitivity up to ISO 12800, readout noise ≤2.5e⁻, dynamic range ≥72dB, and minimum illumination ≤0.1Lux.

8. The three-module split-type wireless portable bedside gastroscopy system according to claim 1, characterized in that, The independent miniature air and water supply control unit has a power switch, a pressure gauge, and a pressure adjustment knob on its front panel. The unit integrates a pressure adjustment unit, a miniature air pump unit, a battery unit, and a circuit control unit. Its dimensions are 10cm×15cm×20cm, and the weight of the whole unit is ≤2.0kg. It has a built-in miniature oil-free air pump and a sterile water storage bottle. The air supply pressure is adjustable from 20 to 60kPa, and the water supply flow rate is adjustable from 0.5 to 2.0mL / s. It has a dual overpressure protection mechanism.

9. The three-module split-type wireless portable bedside gastroscopy system according to claim 1, characterized in that, The wireless gastroscope operating handle has a built-in image processing unit and a wireless transmission unit, supporting multiple wireless communication protocols such as WiFi 6 / 7, 5G, UWB, and Bluetooth; the end-to-end image transmission latency is ≤50ms, the indoor unobstructed transmission distance is ≥10 meters, and it supports automatic reconnection after disconnection.

10. The three-module split-type wireless portable bedside gastroscopy system according to claim 1, characterized in that, The portable wireless display terminal is a tablet-type device, weighing ≤1.0kg, with a built-in high-definition touch screen, supporting real-time image display, freeze, photo taking, video recording, electronic zoom and parameter measurement functions; the terminal has a battery life of ≥6 hours and supports both bedside bracket fixing and handheld use.

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