Front-end component, endoscope and endoscope hydraulic control system

Abstract

The present invention provides a front-end component, an endoscope and an endoscope hydraulic control system, which belong to the technical field of endoscopes. It 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, and the pressure measuring mechanism includes a pressure measuring piece; the pressure measuring piece is movably arranged on the front-end seat, and the pressure measuring piece has a storage state and a working state. When the pressure measuring piece is in the storage state, the pressure measuring piece is located in the front-end seat, and when the pressure measuring piece is in the working state, at least part of the pressure measuring piece protrudes from the distal end face of the front-end seat, and at least part of the pressure measuring piece is located in the image acquisition area of ​​the camera module, and the pressure measuring piece can move toward the front-end seat under the drive of the pressure of the working environment corresponding to the front-end component. The present invention arranges a pressure measuring mechanism on the front-end seat, and uses the pressure measuring mechanism to detect pressure changes, thereby improving the accuracy of pressure regulation in the body cavity, reducing the hysteresis of pressure regulation in the body cavity, and reducing surgical risks.

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:

[0007] 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, wherein the camera module and the pressure measuring mechanism are both installed on the front end seat, and the pressure measuring mechanism includes a pressure measuring piece; the pressure measuring piece is movably arranged on the front end seat, and the pressure measuring piece has a storage state and a working state. When the pressure measuring piece is in the storage state, the pressure measuring piece is located in the front end seat; when the pressure measuring piece is in the working state, at least part of the pressure measuring piece protrudes from the distal end surface of the front end seat, and at least part of the pressure measuring piece is located in the image acquisition area of ​​the camera module, and the pressure measuring piece can move toward the front end seat driven by the pressure of the working environment corresponding to the front end component.

[0008] 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.

[0009] 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 in 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 length of the pressure measuring piece in the image obtained by the camera module to control the operation of the liquid input module and / or the liquid output module.

[0010] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0011] In the present application, a pressure measuring mechanism is arranged on the front end seat, and the pressure measuring mechanism is used to detect the pressure change of the working environment of the front end component, thereby improving the accuracy of the pressure regulation in the body cavity, reducing the hysteresis of the pressure regulation in the body cavity, reducing the amplitude of the pressure fluctuation in the body cavity, and reducing the surgical risk; the pressure measuring mechanism includes a pressure measuring piece, and when the pressure measuring piece is in a stored state, the pressure measuring piece is located inside the front end seat, so as to avoid the pressure measuring piece affecting the insertion process during the insertion of the endoscope into the body cavity; when the pressure measuring piece is in a working state, the length of the distal end surface of the pressure measuring piece protruding from the front end seat can change under the pressure of the working environment of the front end component, and the pressure measuring piece is also located in the image acquisition area of ​​the camera module, and the length information of the pressure measuring piece can be directly obtained through the image information collected by the camera module, so as to conveniently and quickly obtain the pressure change information in the body cavity, and the pressure measuring mechanism is used in combination with the camera module to simplify the structure of the pressure measuring mechanism and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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.

[0013] Figure 1 This is a schematic diagram of the structure of the front-end components provided in some embodiments of the present application. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the structure of the front-end components provided in some embodiments of the present application. Figure 2 ;

[0015] Figure 3 is a cross-sectional view of a front end assembly provided in some embodiments of the present application Figure 1 ;

[0016] Figure 4 is a cross-sectional view of a front end assembly provided in some embodiments of the present application Figure 2 ;

[0017] Figure 5 This is a schematic diagram of the structure of the pressure measuring mechanism provided in some embodiments of the present application. Figure 1 ;

[0018] Figure 6 is a cross-sectional view of a front end assembly provided in some embodiments of the present application Figure 3 ;

[0019] Figure 7 This application is about Figure 6 Detailed view of point A;

[0020] Figure 8 is a cross-sectional view of a front end assembly provided in some embodiments of the present application Figure 4 ;

[0021] Fig. 9 This is a schematic diagram of the structure of the pressure measuring mechanism provided in some embodiments of the present application. Figure 2 ;

[0022] 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;

[0023] Fig.11 Some embodiments of the present application provide Fig.10 Details of B Figure 1 ;

[0024] Fig.12 Some embodiments of the present application provide Fig.10 Details of B Figure 2 ;

[0025] Fig.13 This is a schematic diagram of the use of an endoscope provided in some embodiments of the present application.

[0026] In the figure: 100-front end seat, 110-mounting groove, 120-coaxial protrusion, 121-limiting surface, 200-camera module, 300-pressure measuring mechanism, 310-pressure measuring piece, 311-marking area, 320-sliding protrusion, 330-limiting protrusion, 331-limiting matching surface, 340-spring, 350-soluble sealing layer, 360-electromagnetic part, 370-permanent magnet, 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

[0027] 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.

[0028] 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".

[0029] 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, and the accurate pressure value can be directly obtained by using the pressure sensor. 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 the 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 costly. In addition, the cost of the pressure sensor is also high, which is not conducive to large-scale production.

[0030] In view of this, an embodiment of the present application provides a front-end component, which is applied to an endoscope 900 to obtain pressure change information in a body cavity at a low cost.

[0031] For reference Figures 1 to 4 , Figures 6 to 8 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, so that the camera module 200 can obtain the intraoperative visual field and the pressure measuring mechanism 300 can detect the pressure. In addition, the light source 610, the circuit board, etc. are also installed on the front-end seat 100.

[0032] The pressure measuring mechanism 300 includes a pressure measuring member 310, which is movably arranged on the front end seat 100. The relative position of the pressure measuring member 310 and the front end seat 100 is changeable, and the pressure measuring member 310 has a storage state and a working state. The pressure measuring member 310 is in different states, and the position of the pressure measuring member 310 relative to the front end seat 100 is different, and has different effects.

[0033] When the pressure measuring member 310 is in the storage state, the pressure measuring member 310 is located inside the front end seat 100. Figure 2 , Figure 3 , Figure 6 and Figure 7The storage state corresponds to the process of inserting the endoscope 900 into the human body. During the insertion process, the pressure measuring member 310 is always inside the front end seat 100 to avoid affecting the insertion process.

[0034] When the pressure measuring member 310 is in the working state, refer to Figure 1 , Figure 4 and Figure 8 As shown, at least part of the pressure measuring piece 310 protrudes from the distal end surface of the front end seat 100 and is at least partly located in the image acquisition area of ​​the camera module 200. The pressure measuring piece 310 can move toward the front end seat 100 under the drive of the pressure of the working environment corresponding to the front end component.

[0035] The working state of the pressure measuring piece 310 corresponds to the process of pressure detection and regulation in the body cavity during the operation. When the pressure measuring piece 310 is in the working state, driven by the pressure of the working environment corresponding to the front-end assembly, the pressure measuring piece 310 will move toward the front-end seat 100, and the moving direction of the pressure measuring piece 310 is toward the inside of the front-end seat 100, and the moving distance of the front-end seat 100 is different according to the pressure of the working environment.

[0036] When the pressure of the working environment is relatively high, the driving force on the pressure measuring member 310 is relatively high, and the greater the distance the pressure measuring member 310 moves toward the front end seat 100, the shorter the length of the pressure measuring member 310 protruding from the front end seat 100. When the pressure of the working environment is relatively low, the driving force on the pressure measuring member 310 is relatively low, and the smaller the distance the pressure measuring member 310 moves toward the front end seat 100, the longer the length of the pressure measuring member 310 protruding from the front end seat 100. By determining the change in the length of the pressure measuring member 310 protruding from the front end seat 100, the pressure change information of the working environment can be obtained.

[0037] The front-end component is located in the human body cavity during operation. Therefore, the working environment corresponding to the front-end component is the body cavity environment, and the working environment pressure is the body cavity pressure.

[0038] In some preferred embodiments, by matching the length of the pressure measuring piece 310 protruding from the front end seat 100 with the working environment pressure in advance, the pressure of the working environment can be determined by judging the length of the pressure measuring piece 310 protruding from the front end seat 100.

[0039] The pressure measuring piece 310 protrudes from the distal end surface of the front end seat 100 and is located in the body cavity. It can directly detect the liquid pressure information in the body cavity to reduce the lag in regulating the liquid pressure in the body cavity, achieve the accuracy of regulating the liquid pressure in the body cavity, reduce the amplitude of the liquid pressure fluctuation in the body cavity, and reduce the surgical risk.

[0040] The embodiment provided by the present application also combines the pressure measuring mechanism 300 with the camera module 200, uses the camera module 200 to obtain the image information of the pressure measuring piece 310, and obtains the length information of the pressure measuring piece 310 protruding from the front end seat 100 through the image information, so as to judge the pressure change information in the body cavity, which is convenient for regulating the liquid pressure in the body cavity. The structure of the pressure measuring piece 310 does not need to be too complicated, and the size of the pressure measuring piece 310 can be set very small, and does not require too much installation space, so it is easy to install it to the front end seat 100. The pressure measuring mechanism 300 is used in combination with the camera module 200 to simplify the structure of the pressure measuring mechanism 300, thereby reducing the overall cost and improving production efficiency.

[0041] In some specific embodiments, during lithotripsy using the laser fiber 800, the laser fiber 800 extends out of the insertion portion 600 through the instrument channel of the front end seat 100 to treat the calculi in the body cavity. The operator determines the direction of the laser fiber 800 through the information sent back by the camera module 200, so that the laser fiber 800 can accurately act on the calculi that need to be treated. The pressure measuring piece 310 protrudes from the front end seat 100, and the pressure measuring piece 310 can be used to assist in determining the working length of the laser fiber 800, assist in determining the direction of the laser fiber 800, and determine the effective working range of laser lithotripsy, thereby realizing functional reuse.

[0042] In some embodiments, reference Figure 3 and Figure 7 As shown, the front seat 100 is provided with a mounting groove 110, and the opening of the mounting groove 110 is located at the distal end surface of the front seat 100. The pressure measuring member 310 is movably mounted in the mounting groove 110, and the pressure measuring member 310 can move relative to the mounting groove 110. When the pressure measuring member 310 is completely located in the mounting groove 110, refer to Figure 3 , Figure 6 and Figure 7 As shown, the pressure measuring member 310 is in the storage state. When the pressure measuring member 310 extends out of the mounting slot 110, refer to Figure 4 and Figure 8 As shown, the pressure measuring member 310 is in a working state.

[0043] The mounting groove 110 can provide a certain degree of protection for the pressure measuring member 310 to prevent the pressure measuring member 310 from being disturbed by factors other than the working environment pressure, so as to ensure that the movement of the pressure measuring member 310 can accurately reflect the changes in the pressure in the body cavity.

[0044] In some embodiments, the circumferential side wall of the pressure measuring member 310 is provided with a sliding protrusion 320, Figure 7As shown, the sliding protrusion 320 is in sliding cooperation with the groove wall of the mounting groove 110. The sliding protrusion 320 can reduce the contact area between the pressure measuring member 310 and the mounting groove 110, thereby reducing the friction force on the pressure measuring member 310 during the movement, and ensuring that the pressure measuring member 310 can move smoothly under the pressure of the working environment. In addition, by limiting the size and structure of the sliding protrusion 320, when the sliding protrusion 320 is an annular structure and the height of the protrusion is relatively high, the sliding protrusion 320 can seal the gap between the pressure measuring member 310 and the side wall of the mounting groove 110, thereby preventing external liquid from entering the space between the sliding protrusion 320 and the bottom of the mounting groove 110, which affects the movement of the pressure measuring member 310.

[0045] Preferably, reference Figure 7 As shown, the circumferential side wall of the pressure measuring member 310 is further provided with a limiting protrusion 330, and the groove wall of the mounting groove 110 is provided with a coaxial protrusion 120, which is located on the moving path of the limiting protrusion 330 and is limitedly matched with the limiting protrusion 330 to prevent the limiting protrusion 330 from being separated from the mounting groove 110. The limiting protrusion 330 is located at the proximal end of the coaxial protrusion 120, and the coaxial protrusion 120 is located at the distal end of the limiting protrusion 330. In the process of the pressure measuring member 310 sliding toward the outside of the mounting groove 110, the limiting protrusion 330 contacts the coaxial protrusion 120, and the coaxial protrusion 120 mainly plays a limiting role to prevent the pressure measuring member 310 from being separated from the front end seat 100.

[0046] In some embodiments, the limiting protrusion 330 can be slidably matched with the groove wall of the installation groove 110, and the coaxial protrusion 120 can be slidably matched with the circumferential side wall of the pressure measuring member 310. Both the limiting protrusion 330 and the coaxial protrusion 120 can support the pressure measuring member 310 to prevent the pressure measuring member 310 from shaking during movement. In addition, the limiting protrusion 330 and the coaxial protrusion 120 can be set as an annular structure, so as to further seal the installation groove 110 and the external environment, and prevent the liquid in the body cavity from entering the installation groove 110 and affecting the sliding of the pressure measuring member 310.

[0047] In some preferred embodiments, the coaxial protrusion 120 is generally disposed at the notch position of the mounting slot 110 , so that the pressure measuring member 310 can extend out of the front end seat 100 by a sufficient distance.

[0048] The limiting protrusion 330 and the sliding protrusion 320 may be the same structure or two different structures.

[0049] The surfaces of the limiting protrusion 330 and the sliding protrusion 320 for contacting the groove wall of the installation groove 110 are both arc surfaces, which can further reduce the contact area between the pressure measuring member 310 and the installation groove 110 and further reduce the sliding resistance.

[0050] In some embodiments, reference Figure 7 As shown, the distal end of the limiting protrusion 330 is provided with a limiting matching surface 331, and the proximal end of the coaxial protrusion 120 is provided with a limiting surface 121. When the limiting protrusion 330 and the coaxial protrusion 120 are in limiting matching, the limiting matching surface 331 is in surface contact with the limiting surface 121. The contact area between the limiting protrusion 330 and the coaxial protrusion 120 is increased, thereby improving the contact stability of the limiting protrusion 330 and the coaxial protrusion 120, improving the limiting effect, and ensuring that the function of preventing the pressure measuring member 310 from being separated from the installation groove 110 is stably realized.

[0051] The limiting protrusion 330 and the sliding protrusion 320 are both arranged on the circumferential side wall of the pressure measuring member 310, and are arranged relative to the circumferential side wall protrusion of the pressure measuring member 310. Since the groove wall of the installation groove 110 is provided with a coaxial protrusion 120, in the process of assembling the pressure measuring member 310 to the installation groove 110, the limiting protrusion 330 and the sliding protrusion 320 need to be squeezed with the coaxial protrusion 120 to produce deformation, so that the pressure measuring member 310 can be smoothly assembled into the installation groove 110. In some preferred embodiments, at least one of the limiting protrusion 330 and the sliding protrusion 320 is a flexible structural member. The flexible structural member has a lower rigidity and is more likely to be deformed when in contact with the coaxial protrusion 120. The limiting protrusion 330 and the sliding protrusion 320 are preferably both flexible structural members.

[0052] In some preferred embodiments, the proximal surface of the limiting protrusion 330 smoothly transitions with the circumferential side wall of the pressure measuring member 310. Smooth transition means that the connection between the two surfaces is smooth. In the process of assembling the pressure measuring member 310, the coaxial protrusion 120 can smoothly slide from the circumferential side wall of the pressure measuring member 310 to the surface of the limiting protrusion 330 to cause the limiting protrusion 330 to deform, and the limiting protrusion 330 is more likely to deform. And the distal end of the limiting protrusion 330 is in a limiting fit with the coaxial protrusion 120, therefore, the structure of the smooth transition between the proximal surface of the limiting protrusion 330 and the circumferential side wall of the pressure measuring member 310 does not affect the limiting fit between the limiting protrusion 330 and the coaxial protrusion 120.

[0053] In some embodiments, the sliding protrusion 320 can be located at the proximal end of the limiting protrusion 330, and will not affect the limiting fit between the limiting protrusion 330 and the coaxial protrusion 120. Similar to the limiting protrusion 330, the proximal surface of the sliding protrusion 320 smoothly transitions with the circumferential side wall of the pressure measuring member 310. During the assembly of the pressure measuring member 310, the sliding protrusion 320 is more likely to deform and pass through the coaxial protrusion 120. In other embodiments, the sliding protrusion 320 can also be located at the distal end of the coaxial protrusion 120, and the proximal surface of the sliding protrusion 320 is set to smoothly transition with the circumferential side wall of the pressure measuring member 310, so that the sliding protrusion 320 is more easily assembled into the mounting groove 110.

[0054] When the pressure measuring member 310 is in working state, the length of the pressure measuring member 310 protruding from the front end seat 100 is related to the body cavity pressure. In some embodiments, the pressure measuring mechanism 300 further includes an elastic member, the elastic member and the pressure measuring member 310 are both installed in the installation slot 110, the elastic member is connected between the front end seat 100 and the pressure measuring member 310, and the elastic member is used to drive the pressure measuring member 310 to move toward the outside of the front end seat 100. The pressure measuring member 310 remains stable under the action of the elastic member and the body cavity pressure. When the body cavity pressure is high, the pressure measuring member 310 is driven to move toward the inside of the front end seat 100, the elastic member is compressed, the elastic force of the elastic member on the pressure measuring member 310 is increased, and the position of the pressure measuring member 310 is gradually stabilized. When the pressure in the body cavity increases, the elastic force on the pressure measuring member 310 is greater than the pressure, the pressure measuring member 310 moves toward the outside of the front end seat 100, the elastic member is extended, the elastic force on the pressure measuring member 310 is reduced, and the position of the pressure measuring member 310 is gradually stabilized.

[0055] The elastic member is used to cooperate with the liquid in the body cavity to stabilize the position of the pressure measuring member 310. At the same time, according to the size of the liquid pressure in the body cavity, the position of the pressure measuring member 310 relative to the front end seat 100 will also change, so that the change of the liquid pressure in the body cavity is reflected by the change of the position of the pressure measuring member 310. In addition, by selecting the structural material of the elastic member, the detection accuracy of the pressure measuring member 310 can be adjusted. In the case where the elastic member is easily compressed, when the liquid pressure in the body cavity changes, the movement distance of the pressure measuring member 310 is longer, and the change of the liquid pressure in the body cavity can be more clearly reflected, and the detection accuracy is higher; in the case where the elastic member is not easily compressed, the liquid pressure in the body cavity changes in the same way, and the movement distance of the pressure measuring member 310 is shorter, which is not easy to observe and reflect the change of the liquid pressure in the body cavity, and the detection accuracy is lower.

[0056] In some embodiments, the elastic member can be configured as a spring 340, referring to Figures 3 to 5 As shown, the spring 340 is disposed at the proximal end of the pressure measuring member 310. When the pressure measuring member 310 is in the storage state, the notch of the mounting groove 110 is provided with a soluble sealing layer 350, referring to Figure 3 As shown. The spring 340 can drive the pressure measuring piece 310 to move. During the process of inserting the insertion part 600 into the body cavity, the pressure measuring piece 310 needs to be in a storage state, so a soluble sealing layer 350 is provided at the notch of the mounting groove 110 to seal the pressure measuring piece 310 in the mounting groove 110 to prevent the pressure measuring piece 310 from popping out of the mounting groove 110 and affecting the insertion of the insertion part 600.

[0057] Since the soluble sealing layer 350 is a soluble structure and the environment in the human body cavity is a humid environment, when the soluble sealing layer 350 gradually comes into contact with the liquid in the body cavity, the soluble sealing layer 350 gradually dissolves, and the pressure measuring piece 310 extends out of the mounting slot 110 under the drive of the spring 340, switching from the storage state to the working state.

[0058] The thickness of the soluble sealing layer 350 can be set according to the time required for the insertion of the endoscope 900. According to the actual insertion time required for the endoscope 900, when the insertion portion 600 reaches the target position and the pressure measuring piece 310 needs to be used, the soluble sealing layer 350 will be dissolved, and the liquid pressure in the body cavity can be detected at this time.

[0059] In other embodiments, the elastic member includes an electromagnetic member 360 and a permanent magnet 370. Figures 6 to 9 As shown, the permanent magnet 370 is fixed to the pressure measuring member 310, and the electromagnetic member 360 is located at the proximal end of the pressure measuring member 310 and installed in the installation slot 110. The electromagnetic member 360 is used to cooperate with the permanent magnet 370 to drive the pressure measuring member 310 to move toward the outside of the front end seat 100. The electromagnetic member 360 generates a magnetic field using electric current, and the electromagnetic member 360 can directly connect the current using the circuit in the front end seat 100. The permanent magnet 370 moves toward the outside of the front end seat 100 under the drive of the electromagnetic member 360, and the pressure measuring member 310 remains stable under the interaction of the permanent magnet 370, the electromagnetic member 360 and the liquid in the body cavity.

[0060] Compared with the spring 340, the electromagnetic component 360 and the permanent magnet 370 cooperate, and the interaction force between the electromagnetic component 360 and the permanent magnet 370 can be adjusted during use, thereby adjusting the detection accuracy of the pressure measuring component 310. The interaction force between the electromagnetic component 360 and the permanent magnet 370 can be adjusted to be larger, and the liquid pressure in the body cavity needs to change a large amount to drive the pressure measuring component 310 to move, and the detection accuracy of the pressure measuring component 310 is reduced. The interaction force between the electromagnetic component 360 and the permanent magnet 370 can also be adjusted to be smaller, and even if the liquid pressure in the body cavity changes a small amount, it can drive the pressure measuring component 310 to move, and the detection accuracy of the pressure measuring component 310 is increased.

[0061] In some embodiments, reference Figure 4 , Figure 5 , Figure 7 as well as Fig. 9 As shown, a marking area 311 is provided on the surface of the pressure measuring member 310, and the marking area 311 improves the conspicuousness of the pressure measuring member 310. The marking area 311 is used to more easily determine the length of the pressure measuring member 310 protruding from the front end seat 100. The marking area 311 can mark the length of the pressure measuring member 310 by one or more visual information such as color, number, pattern, etc., making it easier to obtain the length information of the pressure measuring member 310 protruding from the front end seat 100.

[0062] In some preferred embodiments, when the length of the pressure measuring member 310 protruding from the distal end surface of the front end seat 100 reaches the maximum, the marking area 311 is completely exposed in the image acquisition area. Preferably, the proximal edge of the marking area 311 overlaps with the edge of the image acquisition area of ​​the camera module 200, referring to Figure 4 and Figure 8 As shown, the length information of the pressure measuring piece 310 can be directly obtained through the information of the marking area 311 at the edge of the image acquisition area, further reducing the difficulty of obtaining the length information of the pressure measuring piece 310. Figure 4 and Figure 8 In FIG. 3 , the image acquisition area of ​​the camera module 200 is represented by a dotted line, which intersects the proximal edge of the marking area 311. Further, the mark of the marking area 311 can be directly set to the pressure size, which is more convenient for obtaining the pressure information in the body cavity.

[0063] 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 .

[0064] The embodiment of the present application also provides a hydraulic control system for an endoscope 900, 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 length of the pressure measuring piece 310 in the image obtained by the camera module 200 to control the operation of the liquid input module and / or the output module.

[0065] 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.

[0066] 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.

[0067] When the pressure measuring member 310 is in the storage state, reference may be made to Fig.11 As shown, the pressure measuring member 310 is located inside the front end seat 100. When the pressure measuring member 310 is in the working state, reference can be made to Fig.12 and Fig.13As shown, part of the pressure measuring element 310 is located outside the front end seat 100 and is used to detect the change of liquid pressure in the body cavity.

[0068] 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.

[0069] 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.

[0070] 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: It 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 pressure measuring piece (310); The front end seat (100) is provided with a mounting groove (110), the opening of the mounting groove (110) is located at the distal end surface of the front end seat (100), the pressure measuring piece (310) is movably mounted in the mounting groove (110), and the pressure measuring piece (310) has a storage state and a working state. When the pressure measuring piece (310) is in the storage state, the pressure measuring piece (310) is located in the front end seat (100), and when the pressure measuring piece (310) is in the working state, at least part of the pressure measuring piece (310) protrudes from the distal end surface of the front end seat (100), and at least part of the pressure measuring piece (310) is located in the image acquisition area of ​​the camera module (200), and the pressure measuring piece (310) can move toward the front end seat (100) under the drive of the pressure of the working environment corresponding to the front end component.

2. A front end assembly according to claim 1, characterized in that: A sliding protrusion (320) is provided on the circumferential side wall of the pressure measuring piece (310), and the sliding protrusion (320) is slidably matched with the groove wall of the installation groove (110).

3. A front end assembly according to claim 2, characterized in that: The circumferential side wall of the pressure measuring piece (310) is also provided with a limiting protrusion (330), and the groove wall of the installation groove (110) is provided with a coaxial protrusion (120). The coaxial protrusion (120) is located on the moving path of the limiting protrusion (330) and cooperates with the limiting protrusion (330) to prevent the limiting protrusion (330) from detaching from the installation groove (110).

4. A front end assembly according to claim 3, characterized in that: The surfaces of the sliding protrusion (320) and the limiting protrusion (330) used to contact the groove wall of the installation groove (110) are both arc surfaces; And / or, a limiting mating surface (331) is provided at the distal end of the limiting protrusion (330), and a limiting surface (121) is provided at the proximal end of the coaxial protrusion (120), and when the limiting protrusion (330) and the coaxial protrusion (120) are in limiting mating, the limiting mating surface (331) and the limiting surface (121) are in surface contact mating.

5. A front end assembly according to claim 3, characterized in that: At least one of the limiting protrusion (330) and the sliding protrusion (320) is a flexible structural component; And / or, the proximal surface of the limiting protrusion (330) smoothly transitions to the circumferential side wall of the pressure measuring member (310); And / or, the proximal surface of the sliding protrusion (320) smoothly transitions to the circumferential side wall of the pressure measuring member (310).

6. A front end assembly according to claim 1, characterized in that: The front end seat (100) is provided with a mounting groove (110), the notch of the mounting groove (110) is located at the distal end surface of the front end seat (100), and the pressure measuring mechanism (300) further comprises an elastic member, the elastic member and the pressure measuring member (310) are both mounted in the mounting groove (110), the elastic member is connected between the front end seat (100) and the pressure measuring member (310), and the elastic member is used to drive the pressure measuring member (310) to move toward the outside of the front end seat (100).

7. A front end assembly according to claim 6, characterized in that: The elastic member is a spring (340), and the spring (340) is located at the proximal end of the pressure measuring member (310). When the pressure measuring member (310) is in a stored state, a soluble sealing layer (350) is provided at the notch of the installation slot (110); Alternatively, the elastic member includes an electromagnetic member (360) and a permanent magnet (370), the permanent magnet (370) is fixed to the pressure measuring member (310), the electromagnetic member (360) is located at the proximal end of the pressure measuring member (310) and is installed in the installation groove (110), and the electromagnetic member (360) is used to cooperate with the permanent magnet (370) to drive the pressure measuring member (310) to move toward the outside of the front end seat (100).

8. A front end assembly according to claim 1, characterized in that: A marking area (311) is provided on the surface of the pressure measuring piece (310), and when the length of the distal end surface of the pressure measuring piece (310) protruding from the front end seat (100) reaches the longest, the proximal edge of the marking area (311) overlaps with the edge of 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 length of the pressure measuring piece (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.

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