Front end component, endoscope and endoscope component

Abstract

The present invention discloses a front-end component, an endoscope and an endoscope component, which belong to the technical field of endoscopes. It 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. 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. The present application expands the range of the instrument channel by setting a telescopic tube and utilizing the movement of the telescopic tube to treat stones inside 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 gravel, and the gravel in the telescopic tube can be discharged along the fluid negative pressure flow channel to avoid gravel remaining in the body, thereby improving the efficiency and effect of stone removal.

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 surgical incision, providing doctors with sufficient diagnostic information to treat diseases.

[0003] During endoscopic stone treatment, laser fibers are used to break up the stones, and the endoscope and negative pressure suction sheath work together to establish a stable water circulation to promptly expel the broken stones. However, during the stone-breaking process, the fragments tend to scatter in all directions, resulting in only a portion of the fragments being expelled, making stone expulsion ineffective. 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:

[0006] In the first aspect, an embodiment of the present application provides a front end assembly for use in an endoscope, comprising a front end seat and a telescopic tube; the front end seat has an instrument channel and a camera module mounting portion, the instrument channel being 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.

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

[0008] 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. The sheath tube of the negative pressure suction sheath is arranged 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.

[0009] The technical solution provided by this application can achieve the following beneficial effects:

[0010] 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, thereby moving 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, 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 stones in the telescopic tube. The telescopic tube can prevent the spread of gravel formed after the stones are crushed, and the instrument channel connected to the telescopic tube is used to absorb gravel, and the gravel in the telescopic tube can be discharged along the fluid negative pressure flow channel to avoid gravel remaining in the body, thereby improving the efficiency and effect of stone removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0012] 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 ;

[0013] Figure 2 This is a cross-sectional view of the front-end assembly provided in some embodiments of the present application. Figure 1 ;

[0014] Figure 3 This is a cross-sectional view of the front-end assembly provided in some embodiments of the present application. Figure 2 ;

[0015] Figure 4 This application is about Figure 3 Detailed view of point A;

[0016] 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 ;

[0017] Figure 6 This is a cross-sectional view of the front-end assembly provided in some embodiments of the present application. Figure 3 ;

[0018] Figure 7 is a schematic diagram of the cooperation between the telescopic tube and the drive assembly provided in some embodiments of the present application;

[0019] Figure 8 is a schematic diagram of the overall structure of the front end seat provided in some embodiments of the present application;

[0020] Figure 9 is a cross-sectional view of a front end seat provided in some embodiments of the present application;

[0021] Figure 10 is a schematic diagram of the overall structure of an endoscope provided in some embodiments of the present application;

[0022] Figure 11 is a schematic diagram of the overall structure of an endoscope assembly provided in some embodiments of the present application;

[0023] Figure 12 is a cross-sectional view of an endoscope assembly provided by some embodiments of the present application;

[0024] Figure 13 This application is about Figure 12 Detail of point B.

[0025] In the figure: 100-front end seat, 110-instrument channel, 120-camera module mounting part, 130-mounting slot, 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

[0026] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0027] In the specification and claims, "and / or" means at least one of the connected objects, and the character " / " generally indicates that the previous and subsequent related objects are in an "or" relationship.

[0028] 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] During stone removal using a negative pressure suction sheath and endoscope, the sheath is placed over the insertion portion. The gap between the inner wall of the sheath and the outer wall of the insertion portion serves as an output channel to absorb the stone fragments, while the instrument channel of the insertion portion serves as an input channel to deliver fluid to the target location. To improve stone removal efficiency, in related technologies, the sheath moves toward the distal end to include the insertion portion. The distal end of the sheath forms a treatment cavity, within which the stone is treated. After the stone is crushed, the sheath restricts the movement of the stone fragments, allowing them to be absorbed as much as possible.

[0030] However, due to the small operating space inside the renal calyx and the high hardness of the sheath, 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 the correspondence with the stone. The inner wall of the cavity is easily damaged, and the sheath is also difficult to control.

[0031] In view of this, the embodiment of the present application provides a front end component, which is applied to the 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 portion 11. The front-end seat 100 has an instrument channel 110 and a camera module mounting portion 120. The camera module mounting portion 120 is used to install the camera module 400, which is used to obtain image information of the target position. The instrument channel 110 is used to allow various instruments, such as optical fibers 500, sampling forceps, and other components to enter the human body. In addition, the instrument channel 110 provided in the embodiment of the present application serves as an adsorption channel, which is used to adsorb gravel during the treatment of stones.

[0032] 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 and moves synchronously with the front end seat 100, following the front end seat 100 into 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 is 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 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 the portion of the telescopic tube 200 extends to the distal end of the front end seat 100, the portion 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 portion of the telescopic tube 200 extending out of the front end seat 100 is connected to the instrument channel 110, thereby expanding the space of the instrument channel 110. This allows various components in the instrument channel 110, such as the optical fiber 500, to 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.

[0033] The telescopic tube 200 has a see-through area 210 through which vision can pass. This area is located on the side of the telescopic tube 200 near the camera module mounting portion 120. The camera module 400 on the front end seat 100 can capture image information of the interior of the telescopic tube 200 through the see-through area 210. In some embodiments, the see-through area 210 can be made of a transparent material.

[0034] In this embodiment of the present application, a telescopic tube 200 is provided that is movably connected to the front end seat 100. The telescopic tube 200 is moved outside the front end seat 100, and the space within the portion of the telescopic tube 200 located outside the front end seat 100 is used as a stone treatment space. The front end seat 100 is relatively easy to move within the human body cavity. Compared with the sheath tube 21, the front end seat 100 is easier to operate and more flexible. The telescopic tube 200 is also provided with a perspective area 210, which allows the camera module 400 to capture image information within the telescopic tube 200, making it easier for doctors to use optical fibers 500 to break up stones.

[0035] 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 be only partially extended outside the front end seat 100, which makes it easier to subsequently retract the telescopic tube 200 into the front end seat 100.

[0036] 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 most of the gravel is confined 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 out of 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.

[0037] The instrument channel 110 provided in the embodiment of the present application is different from the prior art. During 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 gravel mixed with the fluid is 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 gravel can be adsorbed out of the body, avoiding the gravel remaining in the body.

[0038] In the specific implementation manner, reference Figures 1 to 3 As shown, when the telescopic tube 200 is not needed, the telescopic tube 200 does not extend outside 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 outside the front end seat 100. Figure 5 and Figure 6 shown.

[0039] The telescopic tube 200 may be arranged around the instrument channel 110, including the telescopic tube 200 being placed outside the instrument channel 110, or the telescopic tube 200 being installed inside the instrument channel 110, with the outer wall of the telescopic tube 200 tightly fitting against the inner wall of the instrument channel 110. The size of the telescopic tube 200 should be as large as possible to facilitate the placement of the telescopic tube 200 around the stone and facilitate the doctor's operation of the optical fiber 500 to treat the stone.

[0040] 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, making it easier for components such as the optical fiber 500 extending from the instrument channel 110 to extend into the telescopic tube 200.

[0041] In some embodiments of this application, reference Figure 8 and Figure 9 As shown, the distal end surface of the front seat 100 is provided with a mounting groove 130, which is positioned over the instrument channel 110. The telescopic tube 200 is movably mounted in the mounting groove 130, which restricts the position and movement of the telescopic tube 200. Furthermore, the mounting groove 130 is positioned over the instrument channel 110, independently of the instrument channel 110. This prevents the telescopic tube 200 from interfering with the normal operation of the instrument channel 110 when not in use.

[0042] The telescoping tube 200 also includes an expansion region 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 slot 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.

[0043] The expansion zone 220 is configured as a pre-bent structure. In the absence of external force, the expansion zone 220 is curved, and it bends toward the side away from the instrument channel 110. Compared to the expansion zone 220 located within the mounting slot 130, with this arrangement, when the telescopic tube 200 extends out of the mounting slot 130, the expansion zone 220 is free from the restriction of the mounting slot 130 and can bend toward the side away from the instrument channel 110, thereby expanding the cross-sectional area of ​​the telescopic tube 200 and the internal space of the telescopic tube 200.

[0044] The perspective area 210 is located on the side of the telescopic tube 200 close to the camera module 400, while 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 expands and deforms, it does not affect the camera module 400's acquisition of image information from within the telescopic tube 200. Furthermore, the front end seat 100 of the endoscope 10 has a limited volume, 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 end seat 100. The expansion area 220 of the telescopic tube 200, which is positioned outside the instrument channel 110, is located away from the camera module 400 and close to the edge of the front end seat 100, providing ample room for deformation.

[0045] The expansion region 220 is configured as a pre-bent structure. When the telescopic tube 200 is located within the mounting slot 130, the limited space of the mounting slot 130 restricts the position and shape of the expansion region 220, ensuring that the expansion region 220 is stably installed within the mounting slot 130. After the telescopic tube 200 extends beyond the constraints of the mounting slot 130, the mounting slot 130 no longer restricts the expansion region 220, and the expansion region 220 returns to its initial state, bending away from the instrument channel 110. This expands the radial dimension of the telescopic tube 200, increases the cross-sectional area of ​​the telescopic tube 200, and increases the internal space of the telescopic tube 200, making it easier to move the telescopic tube 200 around the stone and enhancing the flexibility of the lithotripsy operation using the optical fiber 500.

[0046] The expansion area 220 can be made of a flexible material with a certain strength. The material is flexible and can be deformed, allowing the expansion area 220 to be smoothly accommodated 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-curved structure, providing a relatively stable treatment space for stone treatment.

[0047] In some embodiments of the present application, reference is made to Figure 7 As shown, the expansion zone 220 includes an elastic layer 221 and a pre-curved framework 222. The elastic layer 221 is fixedly connected to the see-through zone 210. Along the circumference of the telescopic tube 200, the ends of the elastic layer 221 are fixedly connected to the ends of the see-through zone 210, forming an annular cavity. The pre-curved framework 222 serves as the framework for the expansion zone 220. There are at least two pre-curved frameworks 222, all of which are arranged along the circumference of the telescopic tube 200. The pre-curved frameworks 222 extend from the proximal end of the telescopic tube 200 toward the distal end and are fixedly connected to the elastic layer 221.

[0048] The pre-curved skeleton 222 possesses significant structural strength, supporting the elastic layer 221 and forming a relatively stable tubular structure in conjunction with the see-through region 210. The elasticity of the elastic layer 221 allows it to adapt to the changing positions of the pre-curved skeletons 222 even when multiple pre-curved skeletons 222 are bent and the distance between them changes. The pre-curved skeleton 222 extends from the proximal end to the distal end of the telescopic tube 200, with its extension direction generally aligning with the direction of movement of the telescopic tube 200. This makes it easier for the pre-curved skeleton 222 to be accommodated within the mounting slot 130.

[0049] When the expansion section 220 extends into the mounting slot 130, the distal end of the pre-curved frame 222 bends away from the instrument channel 110, and the distance between the pre-curved frame 222 and the axis of the instrument channel 110 gradually increases from the bottom of the mounting slot 130 to the slot opening. The farther the pre-curved frame 222 is from the bottom of the mounting slot 130, the greater its degree of curvature, which in turn increases the size and cross-sectional area of ​​the telescopic tube 200. This results in a larger opening in the telescopic tube 200, making it easier to maneuver the telescopic tube 200 over the stone.

[0050] In some 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.

[0051] The greater the number of pre-bent ribs 222, the more stable the structure of the telescopic tube 200. At the same time, the number of pre-bent ribs 222 should not be too large to ensure that the expansion section can be smoothly accommodated in the mounting groove 130. Furthermore, the plurality of pre-bent ribs 222 are preferably evenly distributed in the expansion region 220 along the circumference of the telescopic tube 200 to avoid localized low strength in the expansion region 220.

[0052] The camera module 400 captures image information from within the telescopic tube 200 through the fluoroscopic region 210. In some preferred embodiments of the present application, the cross-section of the fluoroscopic region 210 exhibits an arc-shaped structure, and the radius of the arc-shaped cross-section of the fluoroscopic region 210 remains constant along the axial direction of the instrument channel 110. The structure of the fluoroscopic region 210 remains stable, similar to the circumferential sidewall of a cylinder, and does not significantly deform, thereby minimally impacting the imaging quality of the camera module 400.

[0053] 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 structure is greater than or equal to 120 degrees. While meeting the imaging requirements of the camera module 400, it avoids occupying too much of the telescopic tube 200 structure.

[0054] In some embodiments of the present application, the front assembly further includes a drive assembly 300, which is connected to the telescopic tube 200 and is configured to drive the telescopic tube 200 to move relative to the front seat 100. The drive assembly 300 provides power to the telescopic tube 200, driving the telescopic tube 200 to move outward from the front seat 100 or to retract the telescopic tube 200 into the mounting slot 130.

[0055] In some embodiments, the drive assembly 300 can be configured as an electric drive structure to use electricity to drive the telescopic tube 200 to move. The drive assembly 300 can also use magnetic force or electromagnetic force as the power to drive the telescopic tube 200 to move.

[0056] In some embodiments of the present application, the driving component 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 end seat 100. As the telescopic tube 200 moves relative to the front end 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 cord 310 is fixedly connected to the telescopic tube 200, and the proximal end of the control cord 310 extends to the endoscope handle 12. When the operator grasps the endoscope handle 12, the control cord 310 can be operated by pulling the control cord 310 to drive the telescopic tube 200, to which the control cord 310 is fixedly connected, to move.

[0057] In the drive assembly 300, the spring 320 drives the telescopic tube 200 to move outward from the front seat 100, and the control rope 310 drives the telescopic tube 200 to move inward from 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 outward from 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, and the proximal end of the spring 320 fixed to the front end seat 100 cannot move. 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.

[0058] In other embodiments, the spring 320 gradually transitions from a stretched state to a normal state, driving the telescopic tube 200 to move outward from the front seat 100. The spring 320 is sleeved on the outside of the telescopic tube 200, with the distal end of the spring 320 fixed to the front seat 100 and the proximal end of the spring 320 fixed to the telescopic tube 200. After the spring 320 gradually transitions from a stretched state to a normal state, the overall axial length of the spring 320 shortens, the distal end of the spring 320 becomes immobile, and the proximal end gradually approaches the distal end, thereby driving the telescopic tube 200 to move outward from the front seat 100.

[0059] In the case where the front end seat 100 is provided with the mounting groove 130, refer to Figure 4 As shown, spring 320 is located in mounting groove 130 and at the proximal end of telescopic tube 200. Spring 320 is fixedly connected between the bottom of mounting groove 130 and the proximal end surface of telescopic tube 200. Spring 320 is connected to telescopic tube 200, limiting its length so that its natural length is less than the depth of mounting groove 130, thereby preventing telescopic tube 200 from completely moving outside front end seat 100. Furthermore, because spring 320 is connected between telescopic tube 200 and front end seat 100, even if telescopic tube 200 completely moves outside front end seat 100, it is easy to pull telescopic tube 200 back into mounting groove 130.

[0060] The present application also provides an endoscope 10, referring to Figure 10 As shown, the endoscope 10 includes the front end assembly described in any of the above embodiments, and further includes an insertion portion 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 portion 11, and the proximal end of the insertion portion 11 is connected to the endoscope handle 12.

[0061] The present application also provides an endoscope 10 assembly, referring to Figure 11 and Figure 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 arranged outside the insertion portion 11 of the endoscope 10, that is, outside the front end assembly. 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 location.

[0062] refer to Figure 13 As shown, when using the endoscope 10 assembly provided in an 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 position, 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. Figure 13 In the figure, the dotted arrows indicate the flow direction of the liquid.

[0063] When treating a stone, the telescopic tube 200 extends beyond the front end seat 100. The interior of the telescopic tube 200 communicates with the instrument channel 110. The front end seat 100 is controlled to move and adjust the position of the telescopic tube 200, allowing it to be positioned over the stone to be treated. The optical fiber 500 extends from the instrument channel 110 into the telescopic tube 200 to treat the stone within the telescopic tube 200. Simultaneously, the perspective area 210 on the side of the telescopic tube 200 near the camera module 400 does not interfere with the camera module 400's acquisition of image information within the telescopic tube 200. After the stone is treated using the optical fiber 500, the stone is shattered and confined within the telescopic tube 200. The crushed stone flows into the instrument channel 110 along with the fluid within the telescopic tube 200, ultimately being absorbed outside the human body.

[0064] The endoscope 10 provided in the embodiment of the present application can 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.

[0065] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0066] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection 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) extends to the distal end of the front end seat (100), the telescopic tube (200) having a perspective area (210), and the perspective area (210) being located on a side of the telescopic tube (200) close to the camera module mounting portion (120); The front end assembly is configured to be used in conjunction with a sheath tube (21) of a negative pressure suction sheath (20), wherein the sheath tube (21) is sleeved outside the front end assembly, and a gap between an inner wall of the sheath tube (21) and an outer wall of the front end seat (100) is used to transport liquid to a target location.

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 includes an expansion zone (220), wherein the expansion zone (220) and the perspective zone (210) are arranged along the circumference of the telescopic tube (200), and the expansion zone (220) is a pre-bent structure. When the expansion zone (220) extends to the mounting groove (130), the expansion zone (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) is fixedly connected to the perspective zone (210); the pre-bent frames (222) extend from the proximal end of the telescopic tube (200) toward the distal end of the telescopic tube (200) and are 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 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 drive assembly (300) includes 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: The front-end assembly comprises the front-end assembly according to any one of claims 1 to 8.

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