Front end assembly, endoscope and endoscope hydraulic control system

Abstract

The invention provides a front end assembly, an endoscope and an endoscope hydraulic control system, and belongs to the technical field of endoscopes. The front end assembly comprises a front end base, a camera module and a pressure measuring mechanism, the camera module and the pressure measuring mechanism are both installed on the front end base, the pressure measuring mechanism comprises a piezochromic layer, the piezochromic layer is located at the circumferential position of the camera module, the piezochromic layer is made of a piezochromic material, and at least part of the piezochromic layer is located in an image acquisition area of the camera module. The front end seat is provided with the pressure measuring mechanism, and the pressure measuring mechanism is used for detecting the pressure around the front end assembly, so that the accuracy of pressure adjustment in a body cavity is improved, the hysteresis of pressure adjustment in the body cavity is reduced, the amplitude of pressure fluctuation in the body cavity is reduced, and the surgical risk is reduced; the pressure information in the body cavity is judged by observing the color information of the piezochromic layer in the image information collected by the camera module, an operator can adjust the pressure in the body cavity in time, and the overall operation is simple and convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of endoscopes, and in particular relates to a front-end component, an endoscope and an endoscope hydraulic control system. Background Art

[0002] As a medical device, the insertion part of the endoscope can enter the human body to take images of the lesions and provide doctors with sufficient diagnostic information to treat the disease.

[0003] During the process of removing stones using an endoscope, liquid circulation is required in the body cavity, with liquid being input into the body cavity and liquid being output from the body cavity. Liquid circulation requires constant pressure control to ensure the stability and safety of the stone removal operation. However, in actual operation, certain pressure fluctuations are inevitable in the body cavity.

[0004] In the prior art, pressure fluctuations are generally determined by the pressure difference between the liquid input end and the liquid output end outside the body cavity, and the liquid pressure in the body cavity is regulated. However, since the insertion portion has a certain length, there is a certain pressure transmission hysteresis between the pressure of the liquid input end and the liquid output end outside the body cavity and the actual pressure in the body cavity, resulting in a large fluctuation range of the actual pressure in the body cavity during the pressure regulation process, which increases the risk of surgery. Summary of the invention

[0005] The purpose of this application is to provide a front-end component, an endoscope and an endoscope hydraulic control system to solve the above-mentioned technical problems existing in the prior art.

[0006] This application is implemented as follows: In the first aspect, an embodiment of the present application provides a front end component, which is applied to an endoscope, and includes a front end seat, a camera module and a pressure measuring mechanism. The camera module and the pressure measuring mechanism are both installed on the front end seat. The pressure measuring mechanism includes a piezochromic layer, which is located in a circumferential position of the camera module. The piezochromic layer is made of a piezochromic material, and at least part of the piezochromic layer is located in the image acquisition area of ​​the camera module.

[0007] In a second aspect, an embodiment of the present application provides an endoscope, comprising a front end assembly provided in the embodiment of the first aspect.

[0008] In a third aspect, an embodiment of the present application provides an endoscope hydraulic control system, comprising a liquid input module, a liquid output module, an image module, a liquid input channel, a liquid output channel, and an endoscope provided by an embodiment of the second aspect, wherein at least one of the liquid input channel and the liquid output channel is arranged on the endoscope, the liquid input module is used to control the liquid pressure in the liquid input channel, the liquid output module is used to control the liquid pressure in the liquid output channel, and the image module collects pressure information based on the color of the pressure-induced chromic layer in the image obtained by the camera module to control the operation of the liquid input module and / or the liquid output module.

[0009] The technical solution adopted by the present invention can achieve the following beneficial effects: In the present application, a pressure measuring mechanism is arranged on the front end seat, and the pressure around the front end assembly is detected by the pressure measuring mechanism, thereby improving the accuracy of pressure regulation in the body cavity, reducing the lag of pressure regulation in the body cavity, reducing the amplitude of pressure fluctuation in the body cavity, and reducing surgical risks; the pressure measuring mechanism includes a piezochromic layer, the piezochromic layer is made of piezochromic material, and can change different colors according to different pressures, and the piezochromic layer is also located in the image acquisition area of ​​the camera module, and the color information of the piezochromic layer can be obtained by observing the image information collected by the camera module, so as to judge the pressure information in the body cavity, and the operator can adjust the pressure in the body cavity in time, thereby reducing the amplitude of pressure fluctuation in the body cavity; in addition, the piezochromic layer can be directly fixed to the front end seat, which has little impact on the overall structure of the front end assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 This is a schematic diagram of the overall structure of the front-end components provided in some embodiments of the present application. Figure 1 ; Figure 2 is a cross-sectional view of a front end assembly provided in some embodiments of the present application Figure 1 ; Figure 3 This application is about Figure 2 Detailed view of point A; Figure 4 This is a schematic diagram of the overall structure of the front-end components provided in some embodiments of the present application. Figure 2 ; Figure 5 is a cross-sectional view of a front end assembly provided in some embodiments of the present application Figure 2 ; Figure 6 This application is about Figure 5 Detail of point B; Figure 7 is a schematic diagram of a disassembled pressure measuring mechanism provided in some embodiments of the present application; Figure 8 is a cross-sectional view of a pressure measuring mechanism provided in some embodiments of the present application; Fig. 9 is a cross-sectional view of a front end seat provided in some embodiments of the present application; Fig.10 is a schematic diagram of the cooperation between an endoscope and a negative pressure suction sheath provided in some embodiments of the present application; Fig.11 Some embodiments of the present application provide Fig.10 Details of C Figure 1 ; Fig.12 Some embodiments of the present application provide Fig.10 Details of C Figure 2 ; Fig.13 This is a schematic diagram of the use of an endoscope provided in some embodiments of the present application.

[0012] In the figure: 100-front end seat, 110-mounting groove, 200-camera module, 300-pressure measuring mechanism, 310-pressure-induced chromic layer, 320-multiplexing carrier, 330-mounting part, 331-fixing groove, 332-limiting part, 400-liquid input channel, 500-liquid output channel, 600-insertion part, 610-light source, 700-negative pressure suction sheath, 710-sheath tube, 800-laser optical fiber, 900-endoscope. DETAILED DESCRIPTION

[0013] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0014] It should be noted that, in each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its accessories relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0015] In the related art, in order to accurately obtain the liquid pressure in the body cavity during the stone removal process, compared with the existing technology, a pressure sensor can be set at the far end of the front seat to directly obtain the accurate pressure value. However, due to the small overall size of the front seat, and in order to minimize the size of the front seat, the layout of various components inside the front seat has almost reached the optimal level, so most front seats cannot be directly installed with a pressure sensor, and the structure and internal layout of the front seat need to be improved, which is more troublesome.

[0016] In view of this, the embodiment of the present application provides a front-end component, which is applied to the endoscope 900 and uses the piezochromic layer 310 to quickly obtain pressure information in the body cavity. The pressure information includes approximate numerical information of the pressure and pressure change information.

[0017] For reference Figures 1 to 6 As shown, the front-end assembly provided in the embodiment of the present application includes a front-end seat 100, a camera module 200 and a pressure measuring mechanism 300. The front-end seat 100 is the structure at the farthest end of the insertion portion 600 of the endoscope 900. The camera module 200 and the pressure measuring mechanism 300 are both installed on the front-end seat 100, which is convenient for the camera module 200 to obtain the intraoperative field of view and also convenient for the pressure measuring mechanism 300 to detect the pressure around the front-end seat 100. In addition, structures such as the light source 610 and the circuit board are also installed on the front-end seat 100.

[0018] The pressure measuring mechanism 300 includes a piezochromic layer 310, which is made of a piezochromic material. Piezochromic materials are a type of smart material that can change its luminous color according to external stimuli, such as pressure changes. The luminous color of the piezochromic material changes significantly under the action of external force, and the pressure information in the body cavity can be obtained through the color information of the piezochromic layer 310. Corresponding to the pressure information, the color information includes specific color information and color change information.

[0019] The piezochromic layer 310 is located at a circumferential position of the camera module 200, and at least a portion of the piezochromic layer 310 is located in the image acquisition area of ​​the camera module 200. Figure 2 and Figure 5 As shown, range a and range c are image acquisition ranges. The image information acquired by the camera module 200 includes the color information of the piezochromic layer 310. By confirming the color of the piezochromic layer 310, the pressure information in the body cavity is determined.

[0020] The front-end component is located in the human body cavity during operation, so the pressure information corresponding to the piezochromic layer 310 is actually the liquid pressure information in the body cavity. During the operation, the operator directly determines the pressure information in the body cavity by judging the color of the piezochromic layer 310 in the image obtained by the camera module 200, thereby regulating the pressure in the body cavity. The piezochromic layer 310 is installed on the front-end seat 100, and the pressure information in the body cavity is accurately detected by the color of the piezochromic layer 310, so as to reduce the hysteresis of the pressure regulation of the liquid in the body cavity, realize the accuracy of the pressure regulation of the liquid in the body cavity, reduce the amplitude of the pressure fluctuation of the liquid in the body cavity, and reduce the risk of surgery.

[0021] Compared with installing a pressure sensor, the piezochromic layer 310 can be directly fixed to the front end seat 100 , the structural improvement of the front end seat 100 is relatively small, and the process steps of installing the piezochromic layer 310 are simpler.

[0022] During the stone removal operation, the perfusion fluid pressure is generally maintained at about 100 mmHg (1 mmHg = 0.133 kPa). This pressure value helps to maintain a clear surgical field of view and avoid excessive pressure from causing damage to the kidneys. In some preferred embodiments, when setting the piezochromic layer 310, a piezochromic material corresponding to the perfusion fluid pressure is selected. When the pressure in the body cavity is maintained at about the above value, the color of the piezochromic layer 310 does not change. When the pressure in the body cavity deviates from the above pressure value within a certain range, the color of the piezochromic layer 310 changes. When it is detected that the color of the piezochromic layer 310 changes in the image information collected by the camera module 200, the pressure in the body cavity can be regulated according to the changed color result. When the color of the piezochromic layer 310 does not change, the pressure does not need to be adjusted. The pressure needs to be adjusted only after the color changes, which simplifies the detection process and avoids excessive color changes in the piezochromic layer 310, resulting in an overly complicated detection process.

[0023] In some preferred embodiments, reference may be made to Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the piezochromic layer 310 is located on the boundary line of the image acquisition area of ​​the camera module 200. In the image information collected by the camera module 200, the edge position has the color information of the piezochromic layer 310. Compared with the piezochromic layer 310 located at other positions of the image information, the piezochromic layer 310 located at the edge of the image is easier to distinguish and is less likely to make mistakes in color recognition. In addition, the edge position of the image has less obstruction to the line of sight of the image acquisition area of ​​the camera module 200, and the camera module 200 can always normally obtain the image information of the target position to ensure the smooth progress of the operation.

[0024] refer to Figure 2 As shown, range a is the image acquisition area of ​​the camera module 200. However, due to the provision of the piezochromic layer 310, the piezochromic layer 310 will cause certain obstructions to its image acquisition area, resulting in the actual acquisition range of the camera module 200 being reduced to range b. Figure 5 In the figure, range c is the image acquisition area range of the camera module 200, and range d is the actual acquisition range of the camera module 200 after the piezochromic layer 310 is set.

[0025] In some preferred embodiments of the present application, the piezochromic layer 310 located in the image acquisition area is rounded to reduce the volume of the piezochromic layer 310 located in the image acquisition area. Figure 3 and Figure 6 As shown, the outer surface of the piezochromic layer 310 after rounding is a curved surface, which reduces the edges and corners of the piezochromic layer 310 and reduces the obstruction to the line of sight of the camera module 200, thereby reducing the impact on the actual collection range of the camera module 200.

[0026] Furthermore, the surface of the piezochromic layer 310 located in the image acquisition area of ​​the camera module 200 is defined as the acquisition surface, and the image information of the acquisition surface will be acquired by the camera module 200. The acquisition surface has a proximal edge and a distal edge, and the proximal edge of the acquisition surface overlaps with the boundary line of the image acquisition area of ​​the camera module 200. The boundary line of the image acquisition area can be referred to as Figure 2 and Figure 3 The boundary line corresponding to the middle range a, or reference Figure 5 and Figure 6 The boundary line corresponding to the middle range c is indicated by a dotted line. The distal edge of the acquisition surface is located in the rounded corner area of ​​the piezochromic layer 310, further reducing the obstruction of the piezochromic layer 310 to the camera module 200. Figure 2 and Figure 3 As shown, the boundary line corresponding to the range b directly intersects with the rounded corner area of ​​the piezochromic layer 310, referring to Figure 5 and Figure 6 As shown, the boundary line corresponding to the range d directly intersects with the rounded corner area corresponding to the piezochromic layer 310 .

[0027] In some embodiments of the present application, the piezochromic layer 310 is configured as a reusable structure, thereby reducing manufacturing costs. Figures 5 to 8As shown, the pressure measuring mechanism 300 also includes a reuse carrier 320 and a mounting member 330. The piezochromic layer 310 is mounted on the reuse carrier 320. The reuse carrier 320 and the piezochromic layer 310 can be reused again after disinfection and sterilization. The reuse carrier 320 and the mounting member 330 are detachably connected, so that the reuse carrier 320 can be separated from the mounting member 330 intactly for reuse. The mounting member 330 is fixed to the front end seat 100. The mounting member 330 serves as an intermediate structure to fix the reuse carrier 320 to the front end seat 100, thereby avoiding damage to the structure of the reuse carrier 320 and ensuring the integrity of the structure of the reuse carrier 320.

[0028] The mounting member 330 is a disposable structure. When the mounting member 330 is fixed to the front end seat 100, a fixing method such as gluing which is not easy to disassemble but has a good connection effect can be directly used; in the subsequent process of disassembling the reusable carrier 320, when the mounting member 330 is removed from the front end seat 100, the structure of the mounting member 330 can be directly destroyed to separate the front end seat 100 and the mounting member 330. After the mounting member 330 is disassembled, the detachable connection structure between the mounting member 330 and the reusable carrier 320 is easy to separate, so that the damage to the reusable carrier 320 when the reusable carrier 320 is disassembled can be reduced, and even the situation that the structure of the reusable carrier 320 is damaged when the reusable carrier 320 is disassembled can be avoided.

[0029] In some preferred embodiments of the present application, the mounting member 330 is provided with a fixing groove 331, which can be referred to as Figure 7 and Figure 8 As shown, the fixing groove 331 is used to assemble the multiplexed carrier 320, and the multiplexed carrier 320 can be detachably installed in the fixing groove 331. The piezochromic layer 310 is installed on the surface of the multiplexed carrier 320 exposed in the fixing groove 331. The piezochromic layer 310 needs to be exposed so that the camera module 200 can easily obtain the image information of the piezochromic layer 310. The notch of the fixing groove 331 is provided with a limiting portion 332, referring to Figures 6 to 8 As shown, the limiting portion 332 can be deformed in a direction away from the fixing groove 331 under the action of an external force to expand the notch of the fixing groove 331, so that the reusable carrier 320 can be directly installed in the fixing groove 331 or detached from the fixing groove 331 without contacting the limiting portion 332, thereby avoiding the reusable carrier 320 from being squeezed and colliding with the mounting member 330 during the installation and disassembly process, thereby protecting the structural integrity of the reusable carrier 320 and ensuring that the reusable carrier 320 can be smoothly reused.

[0030] When installing or removing the reusable carrier 320, the limiting portion 332 needs to be controlled to deform in a direction away from the fixing groove 331, so that the slot size of the fixing groove 331 is expanded. Figure 8 As shown, Figure 8The middle dotted line indicates the position of the limiting portion 332 after deformation. The distance between the deformed limiting portion 332 and the groove wall on the other side of the fixed groove 331 increases, and the distance between the grooves also increases accordingly. The expanded groove size is larger than the size of the reusable carrier 320, which facilitates the disassembly and assembly of the reusable carrier 320 and the fixed groove 331.

[0031] After the reusable carrier 320 is assembled into the fixed groove 331, the force on the limiting part 332 can be released and the limiting part 332 is reset. The reset limiting part 332 reduces the slot of the fixed groove 331. The limiting part 332 can limit the reusable carrier 320, thereby preventing the reusable carrier 320 from detaching from the fixed groove 331.

[0032] In some further preferred embodiments, the distal end surface of the front end seat 100 is provided with a mounting groove 110, Fig. 9 As shown. The mounting groove 110 is used to install the mounting member 330, and the mounting member 330 is inserted and fixed in the mounting groove 110. When the mounting member 330 is inserted into the mounting groove 110, the mounting groove 110 is tightly matched with the limiting portion 332, and the limiting portion 332 is driven to deform in a direction close to the fixing groove 331 to reduce the notch of the fixing groove 331, so that the limiting portion 332 is limitedly matched with the reuse carrier 320 to prevent the reuse carrier 320 from being separated from the fixing groove 331.

[0033] After the mounting member 330 is assembled into the mounting groove 110, the position of the limiting portion 332 can be referred to as Figure 6 As shown, compared to Figure 7 The position of the middle limit portion 332, Figure 6 The position of the middle limiting portion 332 is obviously deformed toward the fixing groove 331, which reduces the notch of the fixing groove 331, thereby improving the limiting effect on the reusable carrier 320. The limiting portion 332 is arranged to cooperate with the mounting groove 110 to deform, and the deformation of the limiting portion 332 is combined with the process of assembling the mounting member 330 to the mounting groove 110. The limiting portion 332 can be driven to deform during the process of assembling the mounting member 330, which can simplify the overall assembly process and improve assembly efficiency.

[0034] In some embodiments of the present application, the notch of the fixing groove 331 is located on the side of the mounting member 330 close to the camera module 200, so that the camera module 200 can more easily obtain the image information of the piezochromic layer 310, and at the same time, the pressure measuring mechanism 300 can also avoid obstruction of the camera module 200's line of sight. Figure 6As shown, the surface of the piezochromic layer 310 is smoothly connected to the surface of the reusable carrier 320, and the surface of the reusable carrier 320 exposed in the fixing groove 331 is smoothly connected to the surface of the mounting member 330. During the insertion of the endoscope 900, the outer surface of the pressure measuring mechanism 300 will touch the inner wall of the human body cavity, and the joints of the surfaces of its various components are set to be smoothly connected to avoid discomfort to the human body.

[0035] In some embodiments, reference Figure 8 As shown, the bottom of the fixing groove 331 is set as an arc surface, and correspondingly, the multiplexed carrier 320 is also provided with an arc surface, and the arc surfaces are in contact with each other to avoid the possibility of stress concentration between the two, thereby ensuring the integrity of the structure of the multiplexed carrier 320. At the same time, the other side notch of the mounting member 330 where the limiting portion 332 is not provided is provided with a limiting surface, and the position of the multiplexed carrier 320 is limited by the limiting surface, thereby determining the unique installation position of the multiplexed carrier 320 in the fixing groove 331, thereby avoiding the situation where the assembly position of the multiplexed carrier 320 is wrong, resulting in damage to the structure of the multiplexed carrier 320.

[0036] In some preferred embodiments of the present application, the piezochromic layer 310 is a ring-shaped structure. Figure 1 and Fig.11 As shown, the piezochromic layer 310 is sleeved outside the camera module 200. The annular structure can increase the detection range of the piezochromic layer 310, and increase the area of ​​the piezochromic layer 310 in the image acquisition area of ​​the camera module 200 without affecting the size of the image acquisition area of ​​the camera module 200 as much as possible, making it easier to identify the color of the piezochromic layer 310. At the same time, the surface area of ​​the piezochromic layer 310 is increased, and the detection of the pressure in the body cavity is more accurate, further improving the accuracy of the pressure regulation in the body cavity.

[0037] In the case where the pressure measuring mechanism 300 includes the mounting member 330 and the reusable carrier 320, the mounting member 330 and the reusable carrier 320 also need to be configured as an annular structure. At the same time, the notch position of the fixing groove 331 on the mounting member 330 is relative to Figure 8 The position of the slot shown needs to be changed, and the slot is preferably located at the distal end surface of the mounting member 330 . With such a setting, it is easier to assemble the reusable carrier 320 into the fixing groove 331 without damaging the structure of the reusable carrier 320 .

[0038] Furthermore, in any circumferential direction of the camera module 200, part of the piezochromic layer 310 is located in the image acquisition area of ​​the camera module 200. In the image information acquired by the camera module 200, the edge position of the image is the piezochromic layer 310, which further reduces the difficulty of color recognition of the piezochromic layer 310.

[0039] An embodiment of the present application also provides an endoscope 900 , comprising a front end assembly provided by any of the above embodiments, wherein the front end assembly is located at the distal end of the insertion portion 600 of the endoscope 900 .

[0040] The embodiment of the present application also provides an endoscope 900 hydraulic control system, comprising a liquid input module, a liquid output module, an image module, a liquid input channel 400, a liquid output channel 500, and the endoscope 900 provided in the above embodiment. At least one of the liquid input channel 400 and the liquid output channel 500 is provided in the endoscope 900, the liquid output module is used to control the liquid pressure of the liquid output channel 500, the liquid input module is used to control the liquid pressure of the liquid input channel 400, and the image module collects pressure information based on the color of the pressure-induced chromic layer 310 in the image obtained by the camera module 200 to control the operation of the liquid input module and / or the liquid output module.

[0041] When the pressure in the body cavity decreases, the pressure in the body cavity is increased, and when the pressure in the body cavity increases, the pressure in the body cavity is decreased, thereby maintaining the pressure in the body cavity stable and reducing fluctuations in the pressure in the body cavity.

[0042] During the stone removal process, the endoscope 900 is generally used in conjunction with the negative pressure suction sheath 700. Figures 10 to 13 The negative pressure suction sheath 700 has a sheath tube 710, and the insertion portion 600 of the endoscope 900 is inserted into the sheath tube 710. Figures 11 to 13 As shown, the instrument channel of the endoscope 900 forms a liquid input channel 400, the gap between the inner wall of the sheath 710 and the outer wall of the insertion part 600 forms a liquid output channel 500, the distal end of the insertion part 600 is a front end component, and the gap between the outer wall of the front end seat 100 and the inner wall of the sheath 710 is a part of the liquid output channel 500.

[0043] In the case where the piezochromic layer 310 is a ring-shaped structure, reference may be made to Fig.11 and Fig.13 As shown, the pressure-induced color change layer 310 is sleeved outside the camera module 200. In the case where the pressure measuring mechanism 300 also includes a mounting member 330 and a reuse carrier 320, reference can be made to Fig.12 The piezochromic layer 310 is mounted on the distal end surface of the front end seat 100 and is used to detect the change of liquid pressure in the body cavity.

[0044] In the actual stone removal process, the laser optical fiber 800 passes through the liquid input channel 400 and extends out of the front end seat 100 to process the stone, and the processed stone is broken into gravel. The flow direction of the liquid can be referred to Fig.13 In the direction indicated by the middle dotted line, the liquid flows from the liquid input channel 400 into the body cavity, then flows from the body cavity to the liquid output channel 500, and is extracted by the liquid output channel 500. During the liquid output process, the gravel can be extracted.

[0045] The endoscope 900 provided in the embodiment of the present application may be a nephroscope, or a suction endoscope, a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasal endoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A front end assembly, applied to an endoscope, characterized in that: The invention comprises a front end seat (100), a camera module (200) and a pressure measuring mechanism (300), wherein the camera module (200) and the pressure measuring mechanism (300) are both mounted on the front end seat (100), and the pressure measuring mechanism (300) comprises a piezochromic layer (310), wherein the piezochromic layer (310) is located at a circumferential position of the camera module (200), the piezochromic layer (310) is made of a piezochromic material, and at least a portion of the piezochromic layer (310) is located within an image acquisition area of ​​the camera module (200).

2. A front end assembly according to claim 1, characterized in that: The piezochromic layer (310) is located on a boundary line of an image acquisition area of ​​the camera module (200), and a portion of the piezochromic layer (310) located in the image acquisition area is provided with rounded corners; The surface of the piezochromic layer (310) within the image acquisition area of ​​the camera module (200) is a collection surface, and the distal boundary of the collection surface is located at the rounded corner area of ​​the piezochromic layer (310).

3. A front end assembly according to claim 1, characterized in that: The pressure measuring mechanism (300) further comprises a reusable carrier (320) and a mounting member (330), the piezochromic layer (310) being mounted on the reusable carrier (320), the reusable carrier (320) being detachably connected to the mounting member (330), and the mounting member (330) being fixed to the front end seat (100).

4. A front end assembly according to claim 3, characterized in that: The mounting member (330) is provided with a fixing groove (331), the reusable carrier (320) is detachably mounted in the fixing groove (331), the piezochromic layer (310) is mounted on a portion of the surface of the reusable carrier (320) exposed to the fixing groove (331), and a limiting portion (332) is provided at the notch of the fixing groove (331); The limiting portion (332) can be deformed in a direction away from the fixing groove (331) under the action of an external force to expand the notch of the fixing groove (331), so that the reusable carrier (320) can be installed in the fixing groove (331) or detached from the fixing groove (331) without contacting the limiting portion (332).

5. A front end assembly according to claim 4, characterized in that: The distal end surface of the front end seat (100) is provided with a mounting groove (110), and the mounting member (330) is inserted and fixed in the mounting groove (110); During the process of the mounting member (330) being inserted into the mounting groove (110), the mounting groove (110) is tightly fitted with the limiting portion (332), and the limiting portion (332) is driven to deform in a direction close to the fixing groove (331) to reduce the notch of the fixing groove (331), so that the limiting portion (332) is limitedly fitted with the reusable carrier (320), thereby preventing the reusable carrier (320) from falling off from the fixing groove (331).

6. A front end assembly according to claim 4, characterized in that: The notch of the fixing groove (331) is located on a side of the mounting member (330) close to the camera module (200), the surface of the piezochromic layer (310) is smoothly connected to the surface of the reusable carrier (320), and the surface of the reusable carrier (320) exposed in the fixing groove (331) is smoothly connected to the surface of the mounting member (330).

7. A front end assembly according to claim 1, characterized in that: The piezochromic layer (310) is an annular structure, and the piezochromic layer (310) is sleeved outside the camera module (200).

8. A front end assembly according to claim 7, characterized in that: In any circumferential direction of the camera module (200), a portion of the piezochromic layer (310) is located within the image acquisition area of ​​the camera module (200).

9. An endoscope, characterized in that: Comprising the front end assembly according to any one of claims 1 to 8.

10. An endoscope hydraulic control system, characterized in that: The endoscope (900) comprises a liquid input module, a liquid output module, an image module, a liquid input channel (400), a liquid output channel (500), and the endoscope (900) according to claim 9, wherein at least one of the liquid input channel (400) and the liquid output channel (500) is arranged on the endoscope (900), the liquid input module is used to control the liquid pressure in the liquid input channel (400), the liquid output module is used to control the liquid pressure in the liquid output channel (500), and the image module collects pressure information based on the color of the piezochromic layer (310) in the image acquired by the camera module (200) to control the operation of the liquid input module and / or the liquid output module.

Images