WO2025000595A1 - Endoscope system - Google Patents

Abstract

An endoscope system, comprising an endoscope (100), a connecting line (110) and an image processor (120), wherein the endoscope (100) is connected to the image processor (120) by means of the connecting line (110); the endoscope (100) comprises an endoscope head end; the connecting line (110) is used for sending a video signal, which is collected by a camera lens module, to the image processor (120) for post-processing; and the image processor (120) is used for receiving, by means of the connecting line (110), a video signal which is sent by the endoscope head end, and performing image processing on the video signal. The video image processing performance of an endoscope product is effectively improved; moreover, a polymer material extrusion and braiding process is used to replace the complex structure of a traditional endoscope insertion portion, and a sterile barrier method is used, such that a host connecting cable is reused, and thus, the stable transmission of a high-speed video signal on a low-cost transmission line is ensured and, on the basis of an improvement in cost control, a disposable endoscope has a product performance index that is comparable to that of a reusable endoscope.

Description

Endoscope system Technical Field

The present application relates to the technical field of disposable endoscopes, and in particular to an endoscope system.

Background Art

The endoscope system combines traditional optics, ergonomics, precision machinery, modern electronics, mathematics, software and other technologies, providing an important means for doctors to inspect, diagnose and operate on the patient's internal cavity. It is widely used in respiratory, digestive, urological, otolaryngology, gynecology and other professional fields. Since the invention of the endoscope, it has undergone multiple rounds of technological iterations, such as soft mirrors replacing hard mirrors, electronic mirrors replacing traditional optical mirrors, and CMOS replacing CCD. At the same time, its application scope has also expanded to multiple professional fields such as urology, digestion, respiration, and minimally invasive surgery. Traditional endoscopes have always appeared in the form of reusable products. Used endoscopes are reused after high-level disinfection or sterilization. However, in recent years, the risk of cross-infection of endoscopes has been widely recognized by everyone due to a series of accidents. As a solution to completely eliminate the risk of cross-infection, endoscope consumables have become an important development direction of the endoscope industry.

At present, many companies in the market have successively launched disposable endoscope products for the digestive system and respiratory system. However, compared with traditional reusable endoscopes, disposable endoscopes still have a certain gap in user experience and imaging performance. Because of this, disposable endoscopes are only a beneficial supplement in the entire endoscope market and cannot occupy a dominant position in the market. The current disposable endoscopes have the following problems: First, the performance index gap is obvious. At present, most manufacturers of disposable endoscope products are not traditional reusable endoscope manufacturers. Limited by the experience and ability of professional endoscopic image processing and the limited experience of meeting clinical needs, their products have a large gap with traditional reusable endoscope products in terms of professionalism of endoscopic image processing and clinical control experience. Second, there is a significant gap between the cost control level and market expectations. The endoscope has changed from reusable to disposable, and the cost of consumables has increased in each examination or diagnosis. The increase in these costs has seriously affected the market's acceptance of the product by the ability to pay, thereby affecting the progress of endoscope consumable substitution. These problems limit the progress of disposable endoscope products replacing reusable products, making such products still only a beneficial supplement to the endoscope market. In most scenarios, patients still have to bear the threat of cross-infection.

Summary of the invention

In view of the above problems, the present specification is proposed to provide an endoscope system that overcomes the above problems or at least partially solves the above problems.

Other features and advantages of the present disclosure will become apparent from the following detailed description, or may be learned in part by the practice of the present disclosure.

In a first aspect, an embodiment of the present application provides an endoscope system, comprising an endoscope, a connecting line and an image processor, wherein the endoscope is connected to the image processor via a connecting line; the connecting line and the image processor are aseptically processed in a sterile barrier manner; the endoscope comprises an endoscope head end, wherein the endoscope head end is integrated with a camera lens module, wherein the camera lens module is used to image an imaging scene according to a control signal sent by the image processor, and to stably transmit the collected video signal using a differential data phase dynamic adjustment technology, and to send the acquired video signal to the image processor via a connecting line; the connecting line is used to send the video signal collected by the camera lens module to the image processor for post-processing, and to configure the camera lens module, control the camera lens module to collect images in accordance with a global rolling shutter automatic exposure control method, and forward user button requests on the connecting line for the image processor to respond; the image processor is used to control the endoscope handle; receive user operation signals sent by the connecting line; respond to user operations according to the user operation signals, and send control signals to the endoscope handle via the connecting line; receive the video signal sent by the endoscope head end via the connecting line, and perform image processing on the video signal.

In some embodiments, the connecting line is provided with a connecting line FPGA module; the image processor includes an AC/DC high and low voltage conversion board, a power management board, a core main board, a key expansion board, a controller, and an external signal interface chip, and the core main board includes an FPGA image processing module, an isolated power supply and a video output module; the FPGA image processing module is respectively connected to the power management board, the external signal interface chip, the controller, and the connecting line FPGA module, and the FPGA image processing module is connected to the connecting line FPGA module to transmit video signals; the video output module includes several video output interfaces; the isolated power supply is used to power the connecting line and the endoscope handle; the controller is connected to the connecting line FPGA module to transmit control signals.

In some embodiments, the key expansion board is connected to the front panel keys, the key expansion board is connected to the controller, the external signal interface chip is connected to the front panel USB interface and the rear panel USB interface, and several video output interfaces include but are not limited to CVBS interface, S-Video interface, VGA interface, and DVI interface.

In some embodiments, the FPGA image processing module and the connecting line FPGA module configure the camera lens module through the IIC bus; after the camera lens module is configured, image acquisition is performed according to the global rolling shutter automatic exposure control method.

In some embodiments, the endoscope also includes an endoscope handle, which includes an instrument Luer connector, an infusion and suction Luer connector, and a multi-lumen tube. A clamp channel tube is provided in the multi-lumen tube, and a clamp channel hole corresponding to the size of the clamp channel tube is provided at one end of the multi-lumen tube; the other end of the multi-lumen tube is respectively connected to the instrument Luer connector and the infusion and suction Luer connector through the clamp channel tube.

In some embodiments, the multi-lumen tube is connected to a serpentine structure, the multi-lumen tube is provided with a wire rope hole, a wire rope is passed through the wire rope hole, the wire rope is fixed at the end of the endoscope head, and the serpentine structure is pulled by the wire rope to drive the end of the endoscope head to bend and swing.

In some embodiments, the snake-bone structure is in the insertion portion, the end of the endoscope head is located at the head end of the insertion portion, and the insertion portion is composed of a multi-lumen tube integrally formed by an extrusion weaving process.

In some embodiments, the camera lens module includes a lens, an image sensor, and a number of illumination LEDs.

In some embodiments, the camera lens module performs image acquisition according to a global rolling shutter automatic exposure control method, and the image sensor in the camera lens module is a rolling shutter sensor, including: setting the exposure time of the rolling shutter sensor; based on the exposure time, exposing, converting digital to analog, and outputting data for each row of pixels acquired by the rolling shutter sensor in a fixed preset time difference sequence; controlling the lighting LED on the end of the endoscope lens to illuminate the imaging scene during the time interval from the start of exposure of the last row to the end of exposure of the first row of the rolling shutter sensor through the connecting wire FPGA module in the connecting wire.

In some embodiments, the camera lens module performs image acquisition according to a global rolling shutter automatic exposure control method, and also includes: during the exposure process of each row of pixels acquired by the rolling shutter sensor, the FPGA image processing module of the image processor obtains the overall brightness of the historical acquired image, and converts the overall brightness of the historical acquired image into the lighting time of the lighting LED at the end of the endoscope lens.

The present invention uses an FPGA-based endoscope system for image processing algorithms, and combines white light illumination-based early cancer screening and global rolling shutter automatic exposure technology to effectively improve the video image processing performance of endoscope products. At the same time, the present invention uses a polymer material extrusion weaving process to replace the complex structure of the traditional endoscope insertion part, uses a sterile barrier method to allow the host connection cable to be reused, and uses differential The data phase dynamic adjustment technology ensures the stable transmission of high-speed video signals on low-cost transmission lines. Through the above innovative design, the present invention realizes that the product performance indicators of disposable endoscopes are comparable to those of multiplexed endoscopes on the basis of cost control improvement.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic diagram of the product structure of an endoscope system provided in an embodiment of the present application;

FIG2 is a schematic diagram of a top view of the structure of an endoscope provided in an embodiment of the present application;

FIG3 is a schematic diagram of the side structure of an endoscope provided in an embodiment of the present application;

FIG4 is a schematic structural diagram of a snake bone structure provided in an embodiment of the present application;

FIG5 is a schematic diagram of the structure of an image processor provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of the module structure of the endoscope system provided in an embodiment of the present application.

100. endoscope; 101. endoscope handle; 101a. instrument Luer connector; 101b. perfusion and suction Luer connector; 101c. multi-lumen tube; 101d. clamp channel hole; 101e. snake-bone structure; 101e-1. wire rope hole; 101e-2. clamp channel position; 101e-3. wire position; 110. connecting wire; 120. image processor.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

An embodiment of the present application provides an endoscope system.

In the embodiment of the present application, as shown in FIG. 1 and FIG. 6 , the endoscope system includes an endoscope 100, a connecting line 110 and an image processor 120. The endoscope 100 is connected to the image processor 120 via the connecting line 110. The connecting line 110 and the image processor 120 are aseptically processed in a sterile barrier manner. The endoscope 100 includes an endoscope head end, and the endoscope head end is integrated with a camera lens module. The camera lens module is used The imaging scene is imaged according to the control signal sent by the image processor, and the differential data phase dynamic adjustment technology is used to stably transmit the collected video signal and send it to the image processor through a connecting line.

In some embodiments, as shown in Figures 2 and 3, the endoscope 100 also includes an endoscope handle 101, which includes an instrument Luer connector 101a, an infusion and suction Luer connector 101b, and a multi-lumen tube 101c. A clamp channel tube is provided in the multi-lumen tube 101c, and a clamp channel hole 101d adapted to the size of the clamp channel tube is provided at one end of the multi-lumen tube 101c; the other end of the multi-lumen tube 101c is respectively connected to the instrument Luer connector 101a and the infusion and suction Luer connector 101b through the clamp channel tube.

In the embodiment of the present application, the instrument Luer connector 101a and the perfusion and suction Luer connector 101b cross and converge to dock with the clamp channel tube in the multi-lumen tube 101c, and finally lead out from the clamp channel hole at the end of the multi-lumen tube 101c. The embodiment of the present application utilizes this structure to insert instruments such as biopsy forceps, lithotripsy optical fibers, and stone removal baskets from the instrument Luer connector 101a, and then complete functions such as biopsy sampling, radiofrequency ablation, and laser ablation through the clamp channel tube and the clamp channel hole in the multi-lumen tube 101c. The embodiment of the present application can also connect a suction machine or a carbon dioxide gas delivery machine through the perfusion and suction Luer connector 101b, and perform perfusion and suction, carbon dioxide gas injection, and other operations on the end of the endoscope head through the clamp channel tube and the clamp channel hole in the multi-lumen tube. The endoscope of the present application can form various channels through the multi-lumen tube, such as working channels, water vapor channels, etc.

In some embodiments, as shown in FIG. 4 , the multi-lumen tube 101c is connected to a serpentine structure 101e, the serpentine structure 101e is included in the insertion part, the end of the endoscope head is located at the head end of the insertion part, and the insertion part is composed of a multi-lumen tube integrally formed by an extrusion braiding process. The serpentine structure 101e is provided with a wire rope hole 101e-1, and a wire rope is passed through the wire rope hole 101e-1. The wire rope is fixed at the end of the endoscope head, and the serpentine structure 101e is pulled by the wire rope to drive the end of the endoscope head to bend and swing.

Specifically, in the embodiment of the present application, wire rope holes 101e-1 are respectively provided on both sides of the snake-bone structure 101e, and two wire ropes can be passed through the wire rope holes 101e-1 on both sides, and then fixed at the end of the endoscope head. By pulling the wire rope left and right, the snake-bone structure 101e can drive the end of the endoscope head to bend and swing.

In the embodiment of the present application, the snake structure 101e also reserves a clamp channel position 101e-2 and a wire position 101e-3 for the clamp channel tube and the wire. Since the clamp channel tube and the wire are made of flexible materials, the snake structure 101e can drive the end of the endoscope head to bend as a whole through the drive of the wire rope, and can make the lower half of the endoscope handle 101 swing in multiple directions, thereby realizing image acquisition, perfusion suction, Functions such as biopsy sampling, radiofrequency ablation and laser ablation.

In the embodiment of the present application, the multi-lumen tube of the insertion portion is made by an integrally formed extrusion weaving process.

The embodiment of the present application adopts a polymer material extrusion and weaving process to replace the complex structure of the traditional endoscope insertion part. The polymer material extrusion and weaving process forms the outer tube and the inner cavity of the insertion part in one step, providing a working platform for the endoscope working channel, suction channel, signal line, traction wire and other functions. Compared with the traditional process of nesting multiple lumens of the endoscope insertion part, the embodiment of the present application greatly reduces the material cost and production manufacturing cost.

In some embodiments, the camera lens module includes a camera, an image sensor, and a number of illumination LEDs.

The present application implements an integrated camera lens module at the end of the endoscope lens, which can image the scene in front of the endoscope lens. The endoscope lens can integrate two lighting LEDs, which are used to illuminate the scene in front of the endoscope lens. During the startup of the image processor, the image processor will power the connecting wire and the endoscope handle. Afterwards, the FPGA image processing module in the image processor and the connecting wire FPGA module in the connecting wire can configure the camera through the IIC bus. After configuration, the camera can perform normal image acquisition functions according to the control method of the global rolling shutter.

In some embodiments, the camera lens module performs image acquisition according to a global rolling shutter automatic exposure control method, and the image sensor in the camera lens module is a rolling shutter sensor, including: setting the exposure time of the rolling shutter sensor; based on the exposure time, exposing, converting digital to analog, and outputting data for each row of pixels acquired by the rolling shutter sensor in a fixed preset time difference sequence; controlling the lighting LED on the end of the endoscope lens to illuminate the imaging scene during the time interval from the start of exposure of the last row to the end of exposure of the first row of the rolling shutter sensor through the connecting wire FPGA module in the connecting wire.

In some embodiments, the camera lens module performs image acquisition according to a global rolling shutter automatic exposure control method, and also includes: during the exposure process of each row of pixels acquired by the rolling shutter sensor, the FPGA image processing module of the image processor obtains the overall brightness of the historical acquired image, and converts the overall brightness of the historical acquired image into the lighting time of the lighting LED at the end of the endoscope lens.

In the embodiment of the present application, a global rolling shutter automatic exposure control method is used for image acquisition. The exposure time of the rolling shutter sensor is set to the maximum. Each row of pixels is exposed, converted to analog, and output in a fixed time sequence to form an image. During the exposure process of the sensor, the image The FPGA image processing module on the processor will analyze the overall brightness of the previously captured image. This brightness value will be further converted into the lighting time of the endoscope lens end. Finally, the FPGA module in the connecting line will control the LED light source on the endoscope lens end to illuminate the imaging scene during the time interval from the start of exposure of the last row of the sensor to the end of exposure of the first row.

Since during the endoscopic examination, the internal environment is only illuminated by the LED light source at the head end of the endoscope handle, and during this time, all pixel units of the sensor receive external light exposure at the same time, the rolling shutter automatic exposure control method adopted in the embodiment of the present application is consistent with the global shutter exposure effect. Therefore, the embodiment of the present application implements the global shutter function on the rolling shutter image sensor, avoiding the jello effect and other problems that are not conducive to real-time imaging in the rolling shutter image sensor. In addition, the present application analyzes the overall brightness of the previously collected image and further converts it into the lighting time of the illumination LED at the end of the endoscope. Since the LED is not continuously lit during the lighting process, the present application reduces the lighting heat at the head end, which is beneficial to improve the signal-to-noise ratio of the head end image sensor.

In some embodiments, the FPGA image processing module and the connecting line FPGA module configure the camera lens module through the IIC bus; after the camera lens module is configured, image acquisition is performed according to the global rolling shutter automatic exposure control method.

In some embodiments, the connecting line is used to send the video signal captured by the camera lens module to the image processor for post-processing, and to configure the camera lens module, control the camera lens module to capture images according to the global rolling shutter automatic exposure control method, and forward the user button request on the connecting line for the image processor to respond.

In an embodiment of the present application, the connecting line converts the signal collected by the image sensor at the end of the endoscope lens into a format suitable for long-distance transmission and sends it to the image processor for post-processing. The camera lens module can also be configured to control the lighting LED and the imaging sensor to complete the automatic exposure function and forward the user button request on the connecting line for the image processor to respond.

In some embodiments, as shown in FIG. 5 , the image processor is used to control the endoscope handle; receive user operation signals sent by a connecting line; respond to user operations according to the user operation signals, and send control signals to the endoscope handle through the connecting line; receive video signals sent by the endoscope head end through the connecting line, and perform image processing on the video signals.

In some embodiments, as shown in FIG6 , the connection line is provided with a connection line FPGA module; an image processor It includes an AC/DC high and low voltage conversion board, a power management board, a core mainboard, a key expansion board, a controller, and an external signal interface chip. The AC/DC high and low voltage conversion board is connected to an AC220V input power supply. The core mainboard includes an FPGA image processing module, an isolated power supply, and a video output module. The FPGA image processing module is respectively connected to the power management board, the external signal interface chip, the controller, and the connecting line FPGA module. The FPGA image processing module is connected to the connecting line FPGA module to transmit video signals. The video output module includes several video output interfaces. The isolated power supply is used to power the connecting line and the endoscope handle. The controller can be an IIC controller, and the controller is connected to the connecting line FPGA module to transmit control signals.

In some embodiments, the key expansion board is connected to the front panel keys, the key expansion board is connected to the controller, the external signal interface chip is connected to the front panel USB interface and the rear panel USB interface, and several video output interfaces include but are not limited to CVBS interface, S-Video interface, VGA interface, and DVI interface.

Specifically, the connection line and the front panel of the image processor of the embodiment of the present application include multiple buttons. Among them, the connection line includes four buttons, and the functions of buttons 1, 2, and 3 can be customized by the user, and can be set to one of multiple functions such as taking pictures, special spectrum imaging, magnification, metering mode adjustment, structure enhancement, hemoglobin enhancement, light source switch, and image rotation 90°. Button 4 can call out a prompt bar to display information such as the current function, timing, endoscope type, and custom buttons.

The front panel of the image processor may include 11 buttons. Among them, two function buttons are respectively used to adjust the structure enhancement level and the method of image brightness evaluation in the automatic exposure function. In addition, there are 9 buttons in a 3*3 array, from top to bottom, respectively, user-defined button 1, white balance/up button, return button, electronic zoom/left button, menu button, photo browsing/right button, user-defined button 2, photo/down button and confirmation button. User-defined buttons 1 and 2 can be defined by the user as light source switch, special spectrum imaging, hemoglobin enhancement and image rotation 90°. When the menu is not entered, the white balance/up, electronic zoom/left, photo browsing/right, and photo/down buttons can complete the functions of white balance, electronic zoom, photo browsing, and photo. When the menu has been entered, these buttons can respectively realize the functions of up, left, right, and down in the menu operation. The menu button can complete the function of menu call out. The confirmation and return buttons can respectively complete the functions of menu selection and menu return.

In the embodiment of the present application, when a button on the connection line is clicked, the FPGA module in the connection line will first receive the button request. Then, it will send this request to the image processor via the IIC bus in the connection line. The IIC controller in the processor is finally sent to the FPGA image processing module for corresponding function response. When the front panel button is clicked, the key expansion board will generate a corresponding key request, which will be further passed to the IIC controller and finally sent to the FPGA image processing module to respond to the function selection.

The embodiment of the present application designs a USB interface on the front and back panels of the image processor respectively. The USB interface is connected to the USB PHY chip (corresponding to the external signal interface chip), and then finally connected to the FPGA image processing module. The user can insert a storage device such as a USB flash drive into the USB interface, or insert an input device such as a keyboard. The user can also choose to store the captured pictures in a USB flash drive, or use the keyboard to operate the interface and input characters.

In an embodiment of the present application, a video signal sent by an endoscope head end is received through a connecting line, and image processing is performed on the video signal, including characteristic spectral color conversion processing under white light illumination and hemoglobin enhancement processing under white light illumination on the collected image.

Among them, in the process of transforming the characteristic spectrum color of the collected image under white light illumination, by calculating Get the pixel value of the b channel after color conversion and calculate Get the pixel value of the g channel after color conversion and calculate Get the r channel pixel value after color conversion. Among them, Respectively represent the grayscale values of green, blue, and red after color conversion, and They represent the quantum conversion efficiency of the sensor for 540nm and 415nm light, respectively. and represents the relative luminous flux of the light source at 540nm and 415nm, _V540 and _V415 represent the flux-to-power conversion ratio of 540nm and 415nm light, _GVg and _GVb represent the green and blue pixel grayscale values recovered from the CMOS sensor (corresponding to the image sensor) after FPGA processing (i.e., the blue-green grayscale values of the image obtained after interpolation of the original image data), _λl and _λh are the highest and lowest wavelengths of the light source, _Qe is the relative quantum efficiency of the current pixel for light of a specific wavelength, _φs is the relative luminous flux of light of a specific wavelength in the light source, and _Vλ is the flux-to-power conversion coefficient of light of a specific wavelength.

In the embodiment of the present application, the endoscope is connected to the image processor via a connecting line. The endoscope can complete functions such as lighting and control, high-definition video image acquisition, perfusion and suction, and provide channels for other endoscopic surgical instruments to realize functions such as biopsy sampling, radiofrequency ablation, laser ablation, etc. The end of the endoscope can be controlled to bend to traverse various angles of the human body cavity in clinical practice; the connecting line converts the signal collected by the head-end imaging sensor into a format suitable for long-distance transmission and sends it to the image processor for post-processing, and can configure the head-end sensor, control the head-end LED and imaging sensor to complete the automatic exposure function and forward the user button request on the connecting line for the image processor to respond. The image processor controls each module of the endoscope, receives the video signal and user operation signal transmitted by the connecting line, performs image processing on the video signal respectively, responds to the user operation and sends a control signal to the endoscope handle. After the video signal is processed, it is finally output to the screen in a specific format by the output module. The image processor can also provide stable power supply for each part of the endoscope so that each part meets the safety standards related to medical devices. The image signal is collected by the head-end image sensor and transmitted to the image processor via the connecting line. The FPGA image processing module receives the collected image signal and performs image processing to complete functions such as denoising, enhancement, and sharpening, and finally forms a video image signal that meets the requirements of endoscopic detection.

The endoscope head integrates a camera lens module to image the scene in front of the head. The head can integrate two lighting LEDs, which can illuminate the scene in front of the head. During the image processor startup process, the host will power the connecting cable and the handle. After that, the FPGA module in the host and the connecting cable will configure the camera through the IIC bus. After configuration, the camera can perform normal image acquisition functions according to the control method of the global rolling shutter.

In an embodiment of the present application, the signal collected by the camera is first transmitted to the FPGA module in the connecting line through the connecting line or FPC (flexible circuit board) in the multi-lumen tube. The module will convert the signal to a level more suitable for long-distance transmission through the signal line in the connecting line and transmit it to the image processor. Due to the long distance of the transmission line, the stable transmission of high-speed video signals needs to rely on high-quality and high-cost signal transmission lines, especially the impedance accuracy of differential signal lines. This is inconsistent with the original intention of low cost of disposable endoscopes. To solve this problem, the present application targets possible receiving end error sampling caused by high-speed signal distortion. The image processor dynamically adjusts the phase difference between the signal clock and the data, and receives and evaluates the receiving bit error rate under the phase difference in real time, thereby obtaining stable signal reception and ensuring the quality of image signal transmission.

This application is based on materials engineering, production process, electronics, software, optical engineering, image processing, etc. The design of the domain realizes global rolling shutter automatic exposure control, perfusion suction, biopsy sampling, radio frequency and laser ablation, image acquisition and image signal transmission, image processing, video output, button and interface response and other functions. Compared with the disposable endoscope products on the current market, the endoscope system provided by this application adopts FPGA-based endoscope image processing algorithms, early cancer screening based on white light illumination, global rolling shutter automatic exposure and other technologies, which effectively improves the video image processing performance of endoscope products. At the same time, a polymer material extrusion weaving process is used to replace the complex structure of the traditional endoscope insertion part, a sterile barrier method is used to enable the host connection cable to be reused, and differential data phase dynamic adjustment technology is used to ensure the stable transmission of high-speed video signals on low-cost transmission lines.

In addition, the present application adopts a polymer material extrusion weaving process to replace the complex structure of the traditional endoscope insertion part, adopts a sterile barrier method to allow the host connection cable to be reused, and adopts differential data phase dynamic adjustment technology to ensure the stable transmission of high-speed video signals on low-cost transmission lines. Under the premise of ensuring performance indicators, the material and production costs of the product are further reduced.

Moreover, this application uses FPGA-based endoscope image processing algorithms, white light illumination-based early cancer screening, global rolling shutter automatic exposure and other technologies to effectively improve the video image processing performance of endoscope products, avoid problems such as the jelly effect, reduce the impact of lighting on the head end temperature, and improve the imaging signal-to-noise ratio. The above measures have raised the core performance of endoscope products—video image processing—to the level of mainstream multiplexed endoscopes in the market, laying a solid foundation for disposable endoscope products to replace multiplexed products and completely eliminate the threat of cross-infection.

The above is a detailed introduction to an endoscope system provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims (10)

An endoscope system, characterized in that it comprises an endoscope, a connecting line and an image processor, wherein the endoscope is connected to the image processor via the connecting line; The endoscope comprises an endoscope head end, the endoscope head end is integrated with a camera lens module, the camera lens module is used to image an imaging scene according to a control signal sent by the image processor, and adopts a differential data phase dynamic adjustment technology to stably transmit the collected video signal and send it to the image processor through the connecting line; The connecting line is used to send the video signal collected by the camera lens module to the image processor for post-processing, configure the camera lens module, control the camera lens module to collect images according to the global rolling shutter automatic exposure control method, and forward the user key request on the connecting line for the image processor to respond; The image processor is used to control the endoscope handle; receive the user operation signal sent by the connecting line; respond to the user operation according to the user operation signal and send the control signal to the endoscope handle through the connecting line; receive the video signal sent by the endoscope head end through the connecting line and perform image processing on the video signal. The endoscope system as described in claim 1 is characterized in that the connecting line is provided with a connecting line FPGA module; the image processor includes an AC/DC high and low voltage conversion board, a power management board, a core main board, a key expansion board, a controller, and an external signal interface chip, and the core main board includes an FPGA image processing module, an isolated power supply and a video output module; the FPGA image processing module is respectively connected to the power management board, the external signal interface chip, the controller, and the connecting line FPGA module, and the FPGA image processing module is connected to the connecting line FPGA module to transmit the video signal; the video output module includes a plurality of video output interfaces; the isolated power supply is used to power the connecting line and the endoscope handle; the controller is connected to the connecting line FPGA module to transmit the control signal. The endoscope system as described in claim 2 is characterized in that the key expansion board is connected to the front panel keys, the key expansion board is connected to the controller, the external signal interface chip is connected to the front panel USB interface and the rear panel USB interface, and the several video output interfaces include but are not limited to CVBS interface, S-Video interface, VGA interface, and DVI interface. The endoscope system according to claim 3, characterized in that the FPGA image processing The module and the connecting line FPGA module configure the camera lens module through the IIC bus; after the camera lens module is configured, image acquisition is performed according to the global rolling shutter automatic exposure control method. The endoscope system as described in claim 1 or 4 is characterized in that the endoscope also includes an endoscope handle, which includes an instrument Luer connector, an infusion and suction Luer connector and a multi-lumen tube, a clamp channel tube is provided in the multi-lumen tube, and a clamp channel hole corresponding to the size of the clamp channel tube is provided at one end of the multi-lumen tube; the other end of the multi-lumen tube is respectively connected to the instrument Luer connector and the infusion and suction Luer connector through the clamp channel tube. The endoscope system as described in claim 5 is characterized in that the multi-lumen tube is connected to a serpentine structure, the serpentine structure is provided with a wire rope hole, a wire rope is passed through the wire rope hole, the wire rope is fixed to the end of the endoscope head, and the serpentine structure is pulled by the wire rope to drive the end of the endoscope head to bend and swing. The endoscope system as described in claim 6 is characterized in that the snake-bone structure is in the insertion part, the endoscope head end is located at the head end of the insertion part, and the insertion part is composed of a multi-lumen tube integrally formed by an extrusion weaving process. The endoscope system as described in claim 1 is characterized in that the camera lens module includes a lens, an image sensor and a plurality of lighting LEDs. The endoscope system according to claim 8, characterized in that the camera lens module performs image acquisition according to a global rolling shutter automatic exposure control method, and the image sensor in the camera lens module is a rolling shutter sensor, comprising: Setting the exposure time of the rolling shutter sensor; Based on the exposure time, each row of pixels collected by the rolling shutter sensor is exposed, converted into digital-to-analog, and output as data in a fixed preset time difference sequence; The FPGA module in the connecting wire controls the illumination LED on the end of the endoscope head through the connecting wire to illuminate the imaging scene during the time interval from the start of the last row of exposure to the end of the first row of exposure of the rolling shutter sensor. The endoscope system according to claim 9, characterized in that the camera lens module performs image acquisition according to a global rolling shutter automatic exposure control method, and further comprises: During the exposure process of each row of pixels collected by the rolling shutter sensor, the FPGA image processing module of the image processor obtains the overall brightness of the historical collected image, and converts the overall brightness of the historical collected image into the lighting time of the illumination LED at the end of the endoscope head.