Front end assembly, endoscope and endoscope assembly

Abstract

The invention discloses a front end assembly, an endoscope and an endoscope assembly, and belongs to the technical field of endoscopes. Comprising a front end seat and a telescopic pipe; the front end seat is provided with an instrument channel and a camera module mounting part, and the instrument channel is used for adsorbing broken stones; the telescopic pipe is movably installed on the front end base, the telescopic pipe is arranged around the instrument channel, the telescopic pipe can move relative to the front end base in the axial direction of the instrument channel so that at least part of the telescopic pipe can stretch out to the far end of the front end base, the telescopic pipe is provided with a perspective area, and the perspective area is located on the side, close to the camera module installation part, of the telescopic pipe. According to the device, the telescopic pipe is arranged, the range of the instrument channel is expanded through movement of the telescopic pipe, stone is treated in the telescopic pipe, the telescopic pipe can prevent diffusion of broken stone formed after the stone is crushed, the instrument channel communicated with the telescopic pipe is used for adsorbing the broken stone, and the broken stone in the telescopic pipe can flow out along the fluid negative pressure flow channel; broken stones are prevented from remaining in the body, and the stone removing efficiency and the stone removing effect are improved.

Description

Technical Field

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

[0002] An endoscope is a medical device that includes an insertion portion that can enter the human body through a natural cavity or a surgical incision to provide doctors with sufficient diagnostic information to treat diseases.

[0003] In the process of using an endoscope to treat stones, laser optical fibers are used to break up the stones, and the endoscope and negative pressure suction sheath cooperate to establish a stable water cycle to discharge the broken stones in time. However, during the process of breaking up the stones, the broken stones tend to scatter around, resulting in only part of the broken stones being discharged, and the stone discharge effect is not good. Summary of the invention

[0004] The purpose of this application is to provide a front end component, an endoscope and an endoscope component to solve the above-mentioned technical problems existing in the prior art.

[0005] 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 and a telescopic tube; the front end seat has an instrument channel and a camera module mounting portion, and the instrument channel is used to absorb gravel; the telescopic tube is movably mounted on the front end seat, and the telescopic tube is arranged around the instrument channel, and the telescopic tube can move relative to the front end seat along the axial direction of the instrument channel so that at least part of the telescopic tube extends to the distal end of the front end seat, and the telescopic tube has a perspective area, which is located on the side of the telescopic tube close to the camera module mounting portion.

[0006] 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.

[0007] In the third aspect, an embodiment of the present application provides an endoscope assembly, including a negative pressure suction sheath and an endoscope provided by the embodiment of the second aspect, wherein the sheath tube of the negative pressure suction sheath is disposed outside the front end assembly, and the gap between the inner wall of the sheath tube and the outer wall of the front end seat is used to transport liquid to the target position.

[0008] The technical solution provided by this application can achieve the following beneficial effects: In the present application, the telescopic tube is movably connected to the front end seat, and the telescopic tube can move relative to the front end seat along the axial direction of the instrument channel, so as to move at least part of the telescopic tube outside the front end seat. Since the telescopic tube is a tubular structure and is arranged around the instrument channel, the interior of the part of the telescopic tube located outside the front end seat is connected to the instrument channel, thereby expanding the range of the instrument channel; and the side of the telescopic tube close to the camera module mounting portion is a perspective area, and the operator can obtain the field of view inside the telescopic tube through the camera module to facilitate the use of laser to treat the stones in the telescopic tube. The telescopic tube can prevent the diffusion of gravel formed after the stones are crushed, and the instrument channel connected to the telescopic tube is used to absorb the gravel, and the gravel in the telescopic tube can be discharged along the fluid negative pressure flow channel to avoid the gravel remaining in the body, thereby improving the stone removal efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments 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.

[0010] 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 is a cross-sectional view of a front end assembly provided in some embodiments of the present application Figure 2 ; Figure 4 This application is about Figure 3 Detailed view of point A; Figure 5 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 6 is a cross-sectional view of a front end assembly provided in some embodiments of the present application Figure 3 ; Figure 7 is a schematic diagram of the cooperation between the telescopic tube and the driving assembly provided in some embodiments of the present application; Figure 8 is a schematic diagram of the overall structure of a front end seat 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 overall structure of an endoscope provided in some embodiments of the present application; Fig.11 is a schematic diagram of the overall structure of an endoscope assembly provided in some embodiments of the present application; Fig.12 is a cross-sectional view of an endoscope assembly provided in some embodiments of the present application; Fig.13 This application is about Fig.12 Detail of point B.

[0011] In the figure: 100-front end seat, 110-instrument channel, 120-camera module mounting part, 130-mounting groove, 200-telescopic tube, 210-perspective area, 220-expansion area, 221-elastic layer, 222-pre-bent skeleton, 300-driving assembly, 310-control rope, 320-spring, 400-camera module, 500-optical fiber, 10-endoscope, 11-insertion part, 12-endoscope handle, 20-negative pressure suction sheath, 21-sheath tube. DETAILED DESCRIPTION

[0012] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0013] In the specification and claims, "and / or" means at least one of the connected objects, and the character " / " generally means that the previously and subsequently associated objects are in an "or" relationship.

[0014] 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 process of treating stones using a negative pressure suction sheath and an endoscope, the sheath is sleeved outside the insertion part, and the gap between the inner wall of the sheath and the outer wall of the insertion part serves as an output channel to absorb the broken stones, and the instrument channel of the insertion part serves as an input channel to input fluid toward the target position. In order to improve the efficiency of stone removal, in the related art, the sheath moves toward the distal end to include the insertion part, and a processing cavity is formed at the distal end of the sheath. The stone is treated in the processing cavity. After the stone is broken, the sheath restricts the movement of the broken stones so that the broken stones are absorbed as much as possible.

[0016] However, since the operable space inside the renal calyx is small and the sheath is relatively hard, there is a high risk of the sheath scratching the inner wall of the cavity during the process of moving the sheath back and forth to adjust it to correspond to the stone. The inner wall of the cavity is easily damaged, and the sheath is also difficult to control.

[0017] In view of this, the embodiment of the present application provides a front end component, which is applied to an endoscope 10, referring to Figures 1 to 6 As shown, the front-end assembly includes a front-end seat 100 and a telescopic tube 200. The front-end seat 100 is the structure at the farthest end of the insertion part 11, and the front-end seat 100 has an instrument channel 110 and a camera module installation part 120. The camera module installation part 120 is used to install the camera module 400, and the camera module 400 is used to obtain image information of the target position. The instrument channel 110 is used for various instruments, such as optical fiber 500, sampling forceps and other components to enter the human body, and the instrument channel 110 provided in the embodiment of the present application is used as an adsorption channel to adsorb gravel during the process of treating stones.

[0018] The telescopic tube 200 is movably mounted on the front end seat 100. The telescopic tube 200 is mounted on the front end seat 100, moves synchronously with the front end seat 100, and follows the front end seat 100 to enter the target cavity position of the human body. The telescopic tube 200 is a tubular structure and is arranged around the instrument channel 110. The telescopic tube 200 can move relative to the front end seat 100 along the axial direction of the instrument channel 110 so that at least part of the telescopic tube 200 extends to the distal end of the front end seat 100. The telescopic tube 200 surrounds the instrument channel 110 and moves along the axial direction of the instrument channel 110. After part of the telescopic tube 200 extends to the distal end of the front end seat 100, the part of the telescopic tube 200 is actually located at the distal end of the instrument channel 110. Since the telescopic tube 200 is a tubular structure and is arranged around the instrument channel 110, the interior of the telescopic tube 200 that extends out of the front end seat 100 is connected to the instrument channel 110, thereby expanding the space of the instrument channel 110, so that various devices in the instrument channel 110, such as the optical fiber 500, can extend into the telescopic tube 200, and the suction valve connected to the instrument channel 110 can also act on the interior of the telescopic tube 200.

[0019] The telescopic tube 200 has a perspective area 210, through which a line of sight can pass, and the perspective area 210 is located on one side of the telescopic tube 200 close to the camera module mounting portion 120. The camera module 400 located on the front seat 100 can obtain image information inside the telescopic tube 200 through the perspective area 210. In some embodiments, the perspective area 210 can be made of a transparent material.

[0020] The embodiment of the present application sets a telescopic tube 200 that is movably connected to the front end seat 100, moves the telescopic tube 200 to the outside of the front end seat 100, and uses the inner space of the part of the telescopic tube 200 located outside the front end seat 100 as the stone processing space. The front end seat 100 is more convenient to move in the human body cavity. Compared with the sheath tube 21, the front end seat 100 is less difficult to operate and more flexible. In addition, the telescopic tube 200 is provided with a perspective area 210, and the camera module 400 can obtain image information inside the telescopic tube 200, which is convenient for doctors to use optical fibers 500 to break up stones.

[0021] The telescopic tube 200 can be completely moved outside the front end seat 100 to increase the extension length of the instrument channel 110 and improve the flexibility of stone treatment. The telescopic tube 200 can also only extend a portion outside the front end seat 100 to facilitate the subsequent retraction of the telescopic tube 200 into the front end seat 100.

[0022] Due to the limitation of the wall of the telescopic tube 200, after the stones are broken into gravel, the telescopic tube 200 can prevent the gravel from spreading around and confine most of the gravel inside the telescopic tube 200. At the same time, since the telescopic tube 200 is connected to the instrument channel 110, the suction valve is used to adsorb the instrument channel 110, so that the gravel can be adsorbed outside the human body, thereby increasing the amount of gravel removed, avoiding gravel remaining in the body, and improving the efficiency and effect of stone removal.

[0023] The instrument channel 110 provided in the embodiment of the present application is different from the prior art. In the process of treating stones, the instrument channel 110 provided in the embodiment of the present application serves as an output channel. Under the adsorption of the suction valve, the crushed stones mixed with the fluid are adsorbed out of the body. In conjunction with the telescopic tube 200 that can move relative to the front end seat 100, most of the crushed stones can be adsorbed out of the body to avoid the crushed stones remaining in the body.

[0024] In a specific implementation manner, refer to Figures 1 to 3 As shown, when the telescopic tube 200 is not needed, the telescopic tube 200 does not extend out of the front end seat 100, which will not affect the insertion process of the insertion portion 11 into the human body. When the telescopic tube 200 is needed, the telescopic tube 200 can be controlled to move, and at least part of the telescopic tube 200 can be moved out of the front end seat 100, referring to Figure 5 and Figure 6 shown.

[0025] The arrangement of the telescopic tube 200 around the instrument channel 110 includes the telescopic tube 200 being sleeved outside the instrument channel 110, and also includes the telescopic tube 200 being installed inside the instrument channel 110, with the outer wall of the telescopic tube 200 tightly fitting with the inner wall of the instrument channel 110. The size of the telescopic tube 200 needs to be set as large as possible, so that the telescopic tube 200 can be sleeved outside the stone, and the doctor can operate the optical fiber 500 to treat the stone.

[0026] Further preferably, the telescopic tube 200 is preferably coaxially arranged with the instrument channel 110. After the telescopic tube 200 moves axially along the instrument channel 110 to the outside of the front end seat 100, the instrument channel 110 and the telescopic tube 200 are located on the same straight line, which facilitates the optical fiber 500 and other components extending from the instrument channel 110 to extend into the telescopic tube 200.

[0027] In some embodiments of the present application, reference Figure 8 and Fig. 9 As shown, the distal end surface of the front seat 100 is provided with a mounting groove 130, and the mounting groove 130 is sleeved outside the instrument channel 110. The telescopic tube 200 is movably mounted in the mounting groove 130, and the mounting groove 130 limits the position of the telescopic tube 200 and the movable direction of the telescopic tube 200. At the same time, the mounting groove 130 is sleeved outside the instrument channel 110 and is independent of the instrument channel 110. When the telescopic tube 200 is not in use, the telescopic tube 200 is prevented from affecting the normal use of the instrument channel 110.

[0028] The telescoping tube 200 also includes an expansion zone 220, referring to Figures 5 to 7 As shown, the expansion area 220 and the perspective area 210 are arranged along the circumference of the telescopic tube 200. The expansion area 220 is a pre-bent structure. When the expansion area 220 extends to the mounting groove 130, the expansion area 220 can bend in a direction away from the instrument channel 110 to expand the cross-sectional area of ​​the telescopic tube 200.

[0029] The expansion area 220 is configured as a pre-bent structure. In the absence of external force, the expansion area 220 is configured to be bent, and is bent toward the side away from the instrument channel 110. In this arrangement, compared with the expansion area 220 in the mounting groove 130, when the telescopic tube 200 extends out of the mounting groove 130, the expansion area 220 can be bent toward the side away from the instrument channel 110 due to the lack of the restriction of the mounting groove 130, thereby expanding the cross-sectional area of ​​the telescopic tube 200 and expanding the internal space of the telescopic tube 200.

[0030] The perspective area 210 is located on the side of the telescopic tube 200 close to the camera module 400, and the expansion area 220 is located on the side of the telescopic tube 200 away from the camera module 400. When the expansion area 220 is expanded and deformed, it will not affect the camera module 400 to obtain the image information inside the telescopic tube 200. At the same time, for the front seat 100 of the endoscope 10, its volume is limited, and the instrument channel 110 and the camera module 400 are arranged side by side, with one side of the instrument channel 110 close to the camera module 400 and the other side close to the edge of the front seat 100. The expansion area 220 of the telescopic tube 200 sleeved outside the instrument channel 110 is far away from the camera module 400 and close to the edge of the front seat 100, and the expansion area 220 has a relatively ample deformation space.

[0031] The expansion area 220 is configured as a pre-bent structure. When the telescopic tube 200 is located in the mounting groove 130, the position and shape of the expansion area 220 can be restricted due to the limited space of the mounting groove 130, so that the expansion area 220 can be stably installed in the mounting groove 130. After the telescopic tube 200 extends beyond the restriction of the mounting groove 130, the mounting groove 130 can no longer restrict the expansion area 220, and the expansion area 220 returns to the initial state and bends, and the bending direction of the expansion area 220 is the direction away from the instrument channel 110, thereby expanding the radial dimension of the telescopic tube 200, increasing the cross-sectional area of ​​the telescopic tube 200, and increasing the internal space of the telescopic tube 200, making it easier to move the telescopic tube 200 to the outside of the stone, and also improving the flexibility of the lithotripsy operation of the optical fiber 500.

[0032] The expansion area 220 can be made of a flexible material with a certain strength. The material is flexible and can be deformed, and the expansion area 220 can be smoothly received in the installation slot 130. The material also has a certain strength. When the expansion area 220 is located outside the installation slot 130, the expansion area 220 can maintain its pre-bent structure, providing a relatively stable treatment space for stone treatment.

[0033] In some embodiments of the present application, reference Figure 7 As shown, the expansion zone 220 includes an elastic layer 221 and a pre-bent frame 222. The elastic layer 221 is fixedly connected to the perspective zone 210. Along the circumference of the telescopic tube 200, the two ends of the elastic layer 221 are fixedly connected to the two ends of the perspective zone 210, and the two enclose an annular cavity. The pre-bent frame 222 is the frame of the expansion zone 220, there are at least two pre-bent frames 222, and all pre-bent frames 222 are arranged along the circumference of the telescopic tube 200, and the extension direction of the pre-bent frame 222 is from the proximal end of the telescopic tube 200 to the distal end of the telescopic tube 200, and is fixedly connected to the elastic layer 221.

[0034] The pre-bent skeleton 222 has a relatively high structural strength and can support the elastic layer 221, and cooperate with the perspective area 210 to form a relatively stable tubular structure. The elastic layer 221 is elastic, and even if multiple pre-bent skeletons 222 are bent and the distance between the pre-bent skeletons 222 changes, the elastic layer 221 can adapt to the position change of the pre-bent skeleton 222. The pre-bent skeleton 222 extends from the proximal end to the distal end of the telescopic tube 200, and its extension direction is basically consistent with the moving direction of the telescopic tube 200, so that the pre-bent skeleton 222 is more easily stored in the installation groove 130.

[0035] When the expansion area 220 extends to the installation slot 130, the distal end of the pre-bent frame 222 bends in a direction away from the instrument channel 110, and the distance between the pre-bent frame 222 and the axis of the instrument channel 110 gradually increases from the bottom of the installation slot 130 to the slot opening. The farther the pre-bent frame 222 is from the bottom of the installation slot 130, the higher its bending degree, and the correspondingly larger size and cross-sectional area of ​​the telescopic tube 200, so that the opening of the telescopic tube 200 is larger, and it is more convenient to move the telescopic tube 200 to the outside of the stone.

[0036] In some specific embodiments, the elastic layer 221 is a complete membrane structure, and the pre-bent frame 222 can be installed inside or outside the elastic layer 221. In other embodiments, the elastic layer 221 is divided into multiple membranes, and the pre-bent frame 222 is the middle node connecting two adjacent membranes.

[0037] The more the number of pre-bent skeletons 222 is, the more stable the structure of the telescopic tube 200 is. At the same time, the number of pre-bent skeletons 222 should not be too large to ensure that the expansion section can be smoothly received in the installation groove 130. In addition, the plurality of pre-bent skeletons 222 are preferably evenly distributed in the expansion area 220 along the circumference of the telescopic tube 200 to avoid the situation where the local strength of the expansion area 220 is too low.

[0038] The camera module 400 obtains the image information of the inside of the telescopic tube 200 through the perspective area 210. In some preferred embodiments of the present application, the cross section of the perspective area 210 is an arc-shaped structure, and the radius corresponding to the arc-shaped structure of the cross section of the perspective area 210 remains unchanged along the axial direction of the instrument channel 110. The structure of the perspective area 210 remains stable, and the structure of the perspective area 210 is similar to the circumferential side wall of a cylinder, and no obvious deformation occurs, which has little impact on the imaging quality of the camera module 400.

[0039] In some preferred embodiments, the perspective area 210 is an arc-shaped structure extending along the axial direction of the instrument channel 110, and the central angle of the arc-shaped structure is greater than or equal to 120 degrees, so as to meet the imaging requirements of the camera module 400 while avoiding occupying too much of the telescopic tube 200 structure.

[0040] In some embodiments of the present application, the front end assembly further includes a driving assembly 300, which is connected to the telescopic tube 200 and is used to drive the telescopic tube 200 to move relative to the front end seat 100. The driving assembly 300 provides power to the telescopic tube 200, driving the telescopic tube 200 to move toward the outside of the front end seat 100 or driving the telescopic tube 200 to retract into the installation slot 130.

[0041] In some specific embodiments, the driving assembly 300 can be configured as an electric driving structure to drive the telescopic tube 200 to move by electric power. The driving assembly 300 can also use magnetic force or electromagnetic force as power to drive the telescopic tube 200 to move.

[0042] In some embodiments of the present application, the driving assembly 300 is a mechanical structure. Figure 7 As shown, the driving structure includes a control rope 310 and a spring 320, and the spring 320 is coaxially arranged with the telescopic tube 200. Figure 4 As shown, one end of the spring 320 is fixed to the proximal end of the telescopic tube 200, and the other end is fixed to the front seat 100. As the telescopic tube 200 moves relative to the front seat 100, the spring 320 can be compressed or stretched along the axial direction of the telescopic tube 200. The distal end of the control rope 310 is fixedly connected to the telescopic tube 200, and the proximal end of the control rope 310 extends to the endoscope handle 12. When the operator holds the endoscope handle 12, the control rope 310 can be operated. By pulling the control rope 310, the telescopic tube 200 fixedly connected with the control rope 310 can be driven to move.

[0043] In the driving assembly 300, the spring 320 drives the telescopic tube 200 to move outside the front seat 100, and the control rope 310 drives the telescopic tube 200 to move inside the front seat 100. In some embodiments, the spring 320 gradually changes from a compressed state to a normal state, driving the telescopic tube 200 to move outside the front seat 100. Figure 7 As shown, the spring 320 is located on the proximal side of the telescopic tube 200, the distal end of the spring 320 is fixed to the telescopic tube 200, and the proximal end is fixed to the front end seat 100. When the spring 320 changes from a compressed state to a normal state, the overall axial length of the spring 320 increases, the proximal end of the spring 320 fixed to the front end seat 100 cannot move, and the distal end of the spring 320 connected to the telescopic tube 200 gradually moves away from the proximal end, thereby driving the telescopic tube 200 to move toward the outside of the front end seat 100.

[0044] In other embodiments, the spring 320 gradually changes from the stretched state to the normal state, driving the telescopic tube 200 to move outside the front seat 100. The spring 320 is sleeved outside the telescopic tube 200, the distal end of the spring 320 is fixed to the front seat 100, and the proximal end of the spring 320 is fixed to the telescopic tube 200. After the spring 320 gradually changes from the stretched state to the normal state, the overall axial length of the spring 320 is shortened, the distal end of the spring 320 cannot move, and the proximal end gradually approaches the distal end, thereby driving the telescopic tube 200 to move outside the front seat 100.

[0045] In the case where the front end seat 100 is provided with the mounting groove 130, refer to Figure 4As shown, the spring 320 is located in the installation groove 130, and the spring 320 is located at the proximal end of the telescopic tube 200, and the spring 320 is fixedly connected between the groove bottom of the installation groove 130 and the proximal end surface of the telescopic tube 200. The spring 320 is connected to the telescopic tube 200, and by limiting the length of the spring 320, the length of the spring 320 in the natural state is also less than the depth of the installation groove 130, thereby preventing the telescopic tube 200 from moving completely outside the front end seat 100. In addition, since the spring 320 is connected between the telescopic tube 200 and the front end seat 100, even if the telescopic tube 200 is completely moved outside the front end seat 100, it is convenient to pull the telescopic tube 200 back into the installation groove 130.

[0046] The present application also provides an endoscope 10, referring to Fig.10 As shown, including the front end assembly described in any of the above embodiments, the endoscope 10 also includes an insertion part 11 and an endoscope handle 12, the front end seat 100 in the front end assembly is located at the farthest end of the insertion part 11, and the proximal end of the insertion part 11 is connected to the endoscope handle 12.

[0047] The present application also provides an endoscope 10 assembly, referring to Fig.11 and Fig.12 As shown, it includes a negative pressure suction sheath 20 and the endoscope 10 described in the above embodiment. The negative pressure suction sheath 20 has a sheath tube 21, which is sleeved outside the insertion portion 11 of the endoscope 10, that is, sleeved outside the front end assembly, and there is a gap between the inner wall of the sheath tube 21 and the outer wall of the front end seat 100, and the gap is used to transport liquid to the target position.

[0048] refer to Fig.13 As shown, when using the endoscope 10 assembly provided in the embodiment of the present application, the gap between the sheath 21 and the front end seat 100 serves as an input channel for delivering liquid to the target location, i.e., the body cavity, and the instrument channel 110 of the front end seat 100 serves as an output channel, which is connected to the suction valve to absorb the liquid and gravel in the body cavity to the outside of the human body. Fig.13 In the figure, the dotted arrows indicate the flow direction of the liquid.

[0049] When treating the calculus, the telescopic tube 200 extends out of the front seat 100, and the interior of the telescopic tube 200 is connected to the instrument channel 110. The front seat 100 is controlled to move and change the position of the telescopic tube 200, so that the telescopic tube 200 can be set outside the calculus to be treated. The optical fiber 500 extends from the instrument channel 110 and extends into the telescopic tube 200 to treat the calculus located in the telescopic tube 200. At the same time, the perspective area 210 of the telescopic tube 200 close to the camera module 400 will not affect the camera module 400 to obtain the image information in the telescopic tube 200. After the calculus is treated with the optical fiber 500, the calculus is broken, and the broken stones are confined in the telescopic tube 200, and flow into the instrument channel 110 with the flow of the liquid in the telescopic tube 200, and are finally adsorbed outside the human body.

[0050] The endoscope 10 provided in the embodiment of the present application may be a nephroscope, or a bronchoscope, esophagoscope, gastroscope, colonoscope, otoscope, rhinoscope, stomatoscope, laryngoscope, colposcope, laparoscope, arthroscope, etc. The embodiment of the present application does not impose any specific restrictions on the type of the endoscope 10.

[0051] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0052] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A front end assembly, applied to an endoscope, characterized in that: include: A front end seat (100), the front end seat (100) having an instrument channel (110) and a camera module mounting portion (120), the instrument channel (110) being used to absorb gravel; A telescopic tube (200), the telescopic tube (200) being movably mounted on the front end seat (100), and the telescopic tube (200) being arranged around the instrument channel (110), the telescopic tube (200) being movable relative to the front end seat (100) along the axial direction of the instrument channel (110), so that at least a portion of the telescopic tube (200) is extended to the distal end of the front end seat (100), and the telescopic tube (200) having a perspective area (210), the perspective area (210) being located on a side of the telescopic tube (200) close to the camera module mounting portion (120).

2. A front end assembly according to claim 1, characterized in that: The distal end surface of the front end seat (100) is provided with a mounting groove (130), the mounting groove (130) is sleeved outside the instrument channel (110), and the telescopic tube (200) is movably mounted in the mounting groove (130).

3. A front end assembly according to claim 2, characterized in that: The telescopic tube (200) further comprises an expansion area (220), wherein the expansion area (220) and the perspective area (210) are arranged along the circumference of the telescopic tube (200), and the expansion area (220) is a pre-bent structure. When the expansion area (220) extends to the mounting groove (130), the expansion area (220) can bend in a direction away from the instrument channel (110) to expand the cross-sectional area of ​​the telescopic tube (200).

4. A front end assembly according to claim 3, characterized in that: The expansion zone (220) comprises an elastic layer (221) and at least two pre-bent frames (222) arranged along the circumference of the telescopic tube (200), the elastic layer (221) being fixedly connected to the perspective zone (210), and the pre-bent frames (222) extending from the proximal end of the telescopic tube (200) toward the distal end of the telescopic tube (200) and being fixedly connected to the elastic layer (221); When the expansion zone (220) extends to the mounting slot (130), the distal end of the pre-bent skeleton (222) bends in a direction away from the instrument channel (110), and the distance between the pre-bent skeleton (222) and the axis of the instrument channel (110) gradually increases from the bottom of the mounting slot (130) to the slot opening.

5. A front end assembly according to claim 3, characterized in that: The cross section of the perspective area (210) is in an arc-shaped structure, and along the axial direction of the instrument channel (110), the radius corresponding to the arc-shaped structure of the cross section of the perspective area (210) remains unchanged.

6. A front end assembly according to claim 1, characterized in that: The front end assembly further comprises a driving assembly (300), wherein the driving assembly (300) is connected to the telescopic tube (200), and the driving assembly (300) is used to drive the telescopic tube (200) to move relative to the front end seat (100).

7. A front end assembly according to claim 6, characterized in that: The driving assembly (300) comprises a control rope (310) and a spring (320), wherein the spring (320) is coaxially arranged with the telescopic tube (200), one end of the spring (320) is fixed to the proximal end of the telescopic tube (200), and the other end is fixed to the front end seat (100), the distal end of the control rope (310) is fixedly connected to the telescopic tube (200), and the proximal end of the control rope (310) extends to the endoscope handle (12).

8. A front end assembly according to claim 7, characterized in that: The distal end surface of the front end seat (100) is provided with a mounting groove (130), the mounting groove (130) is sleeved outside the instrument channel (110), the telescopic tube (200) is movably mounted in the mounting groove (130), the spring (320) is located in the mounting groove (130) and at the proximal end of the telescopic tube (200), and the spring (320) is fixedly connected between the bottom of the mounting groove (130) and the proximal end surface of the telescopic tube (200).

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

10. An endoscope assembly, characterized in that: It comprises a negative pressure suction sheath (20) and the endoscope (10) according to claim 9, wherein the sheath tube (21) of the negative pressure suction sheath (20) is sleeved outside the front end component, and the gap between the inner wall of the sheath tube (21) and the outer wall of the front end seat (100) is used to transport liquid to the target position.

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