Endoscope tip and endoscope

Abstract

The invention relates to the technical field of endoscopes, in particular to an endoscope tip portion and an endoscope, the tip portion comprises a first tip seat and a second tip seat, a first mounting hole, a second mounting hole and a first working channel are formed in the first tip seat, the first mounting hole penetrates through the first tip seat in the axis direction of the first tip seat, and the second mounting hole penetrates through the second tip seat in the axis direction of the second tip seat. The second mounting hole is formed in the side face of the first mounting hole, and the far end of the first tip seat is provided with a thin wall; the first working channel penetrates through the first tip seat along the axis direction of the first tip seat; at least part of the structure of the second tip seat is inserted into the first tip seat, a second working channel and a third working channel which are not communicated with each other are arranged on the second tip seat, the second working channel is communicated with the first working channel, and the third working channel is communicated with the first mounting hole and the second mounting hole. The image quality can be improved through the thin-wall feature, and the miniaturization design of the tip part is facilitated through the combination of the first tip seat and the second tip seat.

Description

Technical Field

[0001] The present application relates to the technical field of endoscopes, and more specifically to an endoscope tip and an endoscope. Background Art

[0002] An endoscope is a medical instrument that is inserted into the human body for diagnosis and treatment purposes. It is a common method for looking into the internal cavities of the human body. An endoscope is a detection instrument that integrates traditional optics, ergonomics, precision machinery, modern electronics, mathematics, and software. With the rapid development of science and medical technology in recent years, endoscopic minimally invasive or non-invasive medical examinations and treatments have become widely popular. A disposable soft endoscope can use its slender insertion part to enter the human body through natural channels or surgical incisions to conduct a full range of inspections or treatments of internal organs.

[0003] With the rapid development of science and medical technology, endoscopic minimally invasive or non-invasive medical examinations and treatments have become widely popular. In order to facilitate the endoscope to enter narrower human cavities or attached instruments, the maximum outer diameter of the insertion part of the endoscope needs to be as small as possible, and the maximum outer diameter of the insertion part is generally located at the head end. The front end of the endoscope usually includes a head end seat, a camera module, a lighting module, and a working channel tube. The camera module and the lighting module are technologically mature, and the external dimensions are difficult to reduce. The working channel tube needs to ensure that surgical instruments of corresponding sizes can pass smoothly, and the size cannot be changed. Under the above conditions, it is also necessary to meet the requirements of optical performance, sealing, static electricity, and pressure resistance. The maximum outer diameter of the head end can only be reduced by designing the head end seat.

[0004] Therefore, how to reduce the maximum outer diameter of the head end is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0005] The present application provides an endoscope tip portion and an endoscope, which can effectively reduce the maximum outer diameter of the tip portion and improve image quality.

[0006] The present application provides an endoscope tip portion, comprising:

[0007] A first tip seat, wherein a first mounting hole, a second mounting hole and a first working channel are provided in the first tip seat, wherein the first mounting hole is provided through the first tip seat along the axis direction of the first tip seat, and is used to install a camera module of an imaging module; the second mounting hole is provided on the side of the first mounting hole, and is used to install a lighting module of the imaging module; a thin-wall feature is provided at the distal end of the first tip seat, and is used to block the distal end of the second mounting hole; and the first working channel is provided through the first tip seat along the axis direction of the first tip seat; and

[0008] A second tip seat, at least part of the structure of the second tip seat is inserted in the first tip seat, the second tip seat is provided with a second working channel and a third working channel which are not connected to each other, the second working channel is connected to the first working channel to form an installation channel, and the installation channel is used to install a working channel tube; the third working channel is connected to the first installation hole and the second installation hole.

[0009] In an optional embodiment, a first mating surface and a second mating surface are provided in parallel in the first tip seat, the first mating surface is formed by the edge of the second mating surface being recessed toward the direction close to the distal end of the first tip seat, the first mounting hole and the second mounting hole are located on the first mating surface, the first working channel is located on the second mating surface, the second mating surface can abut against the distal end of the second tip seat to form an installation space between the second tip seat and the first mating surface, and the installation space is used to accommodate the exposed portion of the imaging module in the first mounting hole and the second mounting hole.

[0010] In an optional embodiment, a positioning column is provided on the second mating surface, and the positioning column extends along the axial direction of the first tip seat to the proximal end of the first tip seat. A positioning groove is provided on the second tip seat, and the positioning column is inserted into the positioning groove.

[0011] In an optional embodiment, a third mating surface and a fourth mating surface are provided in parallel at the distal end of the second tip seat, the third mating surface is formed by the edge of the fourth mating surface being recessed in a direction close to the proximal end of the second tip seat, the fourth mating surface abuts the second mating surface so that the third mating surface and the first mating surface are spaced apart to form the installation space; the positioning groove is provided on the fourth mating surface, the second working channel is located on the fourth mating surface, the third working channel is located on the third mating surface, and the third working channel is connected to the first mounting hole and the second mounting hole through the installation space.

[0012] In an optional embodiment, the third working channel includes a distal imaging module mounting cavity and a proximal imaging module wire beam hole, and the distal imaging module mounting cavity and the proximal imaging module wire beam hole are arranged in sequence along the axial direction of the second tip seat, and the distal imaging module mounting cavity is arranged close to the first tip seat, and the cross-sectional area of ​​the distal imaging module mounting cavity at the distal end is larger than its cross-sectional area at the proximal end.

[0013] In an optional embodiment, the distance between the proximal axis of the mounting channel and the axis of the second distal seat is smaller than the distance between the distal axis of the mounting channel and the axis of the second distal seat.

[0014] In an optional embodiment, the second working channel includes a proximal channel and a distal channel, the proximal channel and the distal channel are arranged in sequence along the axial direction of the second tip seat, and the distal channel is arranged close to the first tip seat, the axis of the distal channel is arranged at an angle to the axis of the second tip seat, and the distance between the axis of the distal channel and the axis of the second tip seat gradually increases in the direction away from the proximal channel.

[0015] In an optional embodiment, two second mounting holes are provided, and the two second mounting holes are symmetrically arranged on both sides of the first mounting hole. A partition is provided between the first mounting hole and the second mounting hole, and the partition is arranged on the side of the distal end of the first tip seat toward the proximal end of the first tip seat, and the partition extends in a direction from the distal end of the first tip seat to the proximal end of the first tip seat, so that the first mounting hole and the second mounting hole are isolated from each other.

[0016] In an optional embodiment, an outer wall of the second tip seat is provided with a shoulder, a proximal end of the first tip seat is provided with an annular lip, and at least a portion of the structure of the second tip seat is inserted into a cavity formed by the annular lip.

[0017] The present application provides an endoscope, comprising an imaging module, a working channel tube and the endoscope tip as described above, wherein the imaging module comprises a camera module and a lighting module, wherein the camera module is arranged in the first mounting hole, the lighting module is arranged in the second mounting hole, and the light-emitting surface of the lighting module is spaced apart from the thin-wall feature.

[0018] According to the endoscope tip portion in the above embodiment, it includes a first tip seat and a second tip seat, and at least part of the structure of the second tip seat is inserted in the first tip seat. During assembly, the imaging module can be installed on the first tip seat and then fixed by the second tip seat, which can avoid reserving the installation size of the imaging module at the proximal end of the tip portion, which is conducive to minimizing the size of the tip portion. Since the distal end of the first tip seat is provided with a thin-wall feature, it can cover and protect the light-emitting surface of the lighting module, so that when the imaging module is fixed with an adhesive, the light-emitting surface can be prevented from contacting the adhesive, so that a layer of air layer is formed on the surface of the light-emitting surface, thereby effectively improving the image quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 An exploded view of the structure of the cooperation between the tip end and the camera module in one embodiment;

[0020] Figure 2 is a schematic structural diagram of a first tip seat in an embodiment;

[0021] Figure 3A schematic diagram of the structure of the first tip seat at another angle in one embodiment;

[0022] Figure 4 A schematic diagram of the structure of the second tip seat in one embodiment;

[0023] Figure 5 A cross-sectional view of the structure of the cooperation between the tip end and the camera module in one embodiment;

[0024] Figure 6 is a structural cross-sectional view of a second tip seat in an embodiment;

[0025] Figure 7 It is a structural schematic diagram of the first tip seat in another embodiment;

[0026] Figure 8 It is a schematic structural diagram of the second tip seat in another embodiment.

[0027] Wherein: 1. first tip seat; 11. first mounting hole; 12. second mounting hole; 13. first working channel; 14. thin-wall feature; 15. first mating surface; 16. second mating surface; 161. positioning column; 17. partition; 18. annular lip; 2. second tip seat; 21. second working channel; 211. proximal channel; 212. distal channel; 22. third working channel; 221. distal imaging module mounting cavity; 222. proximal imaging module wire threading hole; 23. third mating surface; 24. fourth mating surface; 241. positioning groove; 25. shoulder; 26. first boss; 27. second boss; 3. imaging module; 31. camera module; 32. lighting module; 4. mounting channel; 5. mounting space; A. axis of the first tip seat; B. axis of the second tip seat. DETAILED DESCRIPTION

[0028] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0029] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations, and the operation steps involved in each embodiment can also be replaced or adjusted in a sequence in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the composition and / or sequence are necessary.

[0030] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0032] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. Moreover, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to express other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances.

[0033] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In order to more clearly describe the structure of the present application, "proximal" and "distal" are used as directional words. "Proximal" refers to the end of the structure close to the operator when in use, and "distal" refers to the end of the structure far away from the operator when in use, that is, the end close to the patient or extending into the patient's body.

[0035] See also Figures 1 to 8 The present application provides an endoscope tip portion, including a first tip seat 1 and a second tip seat 2, at least part of the structure of the second tip seat 2 is inserted into the first tip seat 1, the second tip seat 2 and the first tip seat 1 are coaxially arranged, and the first tip seat 1 and the second tip seat 2 are combined to form a space for installing a camera module 31 and a lighting module 32 and a channel for inserting a working channel tube (a pipe for installing medical equipment).

[0036] See also Figure 2 and Figure 3 The first tip seat 1 is provided with a first mounting hole 11, a second mounting hole 12 and a first working channel 13. The first mounting hole 11 is arranged through the first tip seat 1 along the axis A direction of the first tip seat, and is used to install the camera module 31 of the imaging module 3. The through arrangement of the first mounting hole 11 enables the camera module 31 to smoothly obtain image information. The second mounting hole 12 is arranged on the side of the first mounting hole 11, and is used to install the lighting module 32 of the imaging module 3. The lighting module 32 has a light-emitting surface, and the light-emitting surface is located at the distal end of the second mounting hole 12. The distal end of the first tip seat 1 is provided with a thin-wall feature 14, which is used to block the distal end of the second mounting hole 12, that is, the thin-wall feature 14 can cover and protect the light-emitting surface. Since the camera module 31 and The lighting module 32 is an integrated structure and can be assembled in an integrated manner. The camera module 31 and the lighting module 32 can be fixed by filling adhesive (glue) between the inner wall of the first mounting hole 11 and the camera module 31, so that the light-emitting surface of the lighting module 32 does not contact the adhesive. At the same time, the thin-wall feature 14 is used to block the far end of the second mounting hole 12, further effectively preventing the adhesive overflowing from the first mounting hole 11 from contacting the light-emitting surface of the lighting module 32, so that an air layer is formed on the light-emitting surface of the lighting module 32, thereby effectively solving the problem of blue light generated by the lighting module 32. The first working channel 13 is set through the first tip seat 1 along the axis A direction of the first tip seat for installing part of the working channel tube.

[0037] In the current prior art, there is a method of installing the camera module 31 and the lighting module 32 from the proximal end to the distal end of the tip. This method requires reserving the installation dimensions of the camera module 31 and the lighting module 32 at the proximal end of the tip, as well as the characteristic dimensions connected to the proximal curved portion, so the maximum outer diameter cannot be made smaller. In addition, there is also a method of installing the camera module 31 and the lighting module 32 from the distal end of the head to the proximal end, and fixing them by glue on the light-emitting surface of the lighting module 32. This method can effectively reduce the maximum outer diameter, but because the light-emitting surface of the lighting module 32 is glued, it causes image quality problems. The present application creatively sets the tip as two independent components, and can reliably install the imaging module 3 in the tip. The independent setting of the first tip seat 1 and the second tip seat 2 facilitates mass production and installation, thereby meeting the needs of mass production. At the same time, when assembling the imaging module 3, the imaging module 3 can be installed on the first tip seat 1 and then fixed by the second tip seat 2. Based on the characteristic that the distal dimension of the imaging module 3 is larger than the proximal dimension, this assembly method can avoid reserving the installation dimension of the imaging module 3 at the proximal end of the tip, which is conducive to minimizing the dimension of the tip. Creatively utilizing the setting of the thin-wall feature 14 can effectively improve the image quality.

[0038] Since the thin-wall feature 14 covers the light-emitting surface, in order not to affect the light-emitting lighting effect, the thin-wall feature 14 is made of a transparent material.

[0039] See also Figure 4 The second tip seat 2 is provided with a second working channel 21 and a third working channel 22 which are not connected to each other. The second working channel 21 is connected to the first working channel 13 to form an installation channel 4 for installing the working channel tube. The third working channel 22 can be connected to the first installation hole 11 and the second installation hole 12. Along the axis B direction of the second tip seat, the area of ​​the third working channel 22 is at least larger than the sum of the areas of the first installation hole 11 and the second installation hole 12, so that the third working channel 22 can cover the first installation hole 11 and the second installation hole 12, thereby facilitating the installation of the imaging module 3 from the proximal end to the distal end, and also facilitating the filling of adhesive from the proximal end, which can reduce the possibility of the adhesive overflowing onto the light-emitting surface of the lighting module 32 in the second installation hole 12.

[0040] See also Figure 3 and Figure 5In some embodiments, a first mating surface 15 and a second mating surface 16 are arranged side by side in the first tip seat 1. The first mating surface 15 is formed by the edge of the second mating surface 16 being recessed in the direction close to the distal end of the first tip seat 1, that is, the second mating surface 16 and the first mating surface 15 are staggered along the axis A direction of the first tip seat. The first mounting hole 11 and the second mounting hole 12 are located on the first mating surface 15, and the first working channel 13 is located on the second mating surface 16. The second mating surface 16 can abut against the distal end of the second tip seat 2 to form an installation space 5 between the second tip seat 2 and the first mating surface 15. The installation space 5 is used to accommodate the portion of the imaging module 3 exposed in the first mounting hole 11 and the second mounting hole 12. This structural design can not only provide space for installing the imaging module 3, but also reduce the size in the axial direction of the tip end. In a specific embodiment, the two ends of the first mating surface 15 are respectively connected to the second mating surface 16 and the inner wall of the first tip seat 1, and the first mating surface 15 and the second mating surface 16 are arranged parallel to the cross section (the cross section in the axial direction) of the first tip seat 1, and a step is formed between the first mating surface 15 and the second mating surface 16. Of course, in another specific embodiment, the first mating surface 15 and the second mating surface 16 have a smooth transition, and the first mating surface 15 is arranged obliquely in the first tip seat 1.

[0041] In other embodiments, a first mating surface 15 and a second mating surface 16 are arranged side by side in the first tip seat 1. The first mating surface 15 and the second mating surface 16 are aligned and continuously arranged along the axis A of the first tip seat and can abut against the distal end of the second tip seat 2.

[0042] See also Figure 3 and Figure 4 In some specific embodiments, a positioning column 161 is provided on the second mating surface 16, and the positioning column 161 extends along the axis A of the first tip seat to the proximal end of the first tip seat 1, and a positioning groove 241 is provided on the second tip seat 2, and the positioning column 161 is inserted into the positioning groove 241, so as to facilitate the positioning and installation of the first tip seat 1 and the second tip seat 2. In some specific embodiments, the positions of the positioning column 161 and the positioning groove 241 can be interchanged, that is, the positioning column 161 is set on the second tip seat 2, and the positioning groove 241 is set on the second mating surface 16 of the first tip seat 1.

[0043] In some embodiments, the distal end of the second tip seat 2 is provided with a third mating surface 23 and a fourth mating surface 24 in parallel, and the fourth mating surface 24 abuts against the second mating surface 16. Since the second mating surface 16 and the first mating surface 15 are staggered along the axis A of the first tip seat, there is a gap between the first mating surface 15 and the third mating surface 23, thereby forming an installation space 5, which is convenient for installing and fixing the imaging module 3. Please refer to Figure 4In order to adapt to and match the imaging module 3 of a larger size, the third mating surface 23 is formed by the edge of the fourth mating surface 24 being recessed toward the proximal end of the second tip seat 2, which can increase the size of the installation space 5. Figure 8 The third mating surface 23 and the fourth mating surface 24 can also be aligned and continuously arranged along the axis B direction of the second front end seat. The positioning groove 241 is arranged on the fourth mating surface 24, which can facilitate the abutment between the fourth mating surface 24 and the second mating surface 16. The second working channel 21 is located on the fourth mating surface 24, and is docked and connected with the first working channel 13 on the second mating surface 16. The working channel tube can be docked with the second working channel 21 and communicate with the first working channel 13. The third working channel 22 is located on the third mating surface 23, and is connected with the first mounting hole 11 and the second mounting hole 12 located on the first mating surface 15. The third working channel 22 is connected with the first mounting hole 11 and the second mounting hole 12 through the mounting space 5.

[0044] See also Figure 6 The third working channel 22 includes a distal imaging module mounting cavity 221 and a proximal imaging module wire beam hole 222. The distal imaging module mounting cavity 221 and the proximal imaging module wire beam hole 222 are arranged in sequence along the axis B direction of the second tip seat, and the distal imaging module mounting cavity 221 is arranged close to the first tip seat 1. The cross-sectional area of ​​the distal imaging module mounting cavity 221 at the distal end is greater than its cross-sectional area at the proximal end. Furthermore, the cross-sectional area of ​​the module mounting cavity 221 gradually decreases in the direction from the distal end to the proximal end, so that the longitudinal section (the section perpendicular to the cross section) of the module mounting cavity 221 has a trapezoidal structure. Since the dimensions of the camera module 31 and the lighting module 32 of the imaging module 3 are larger than the dimensions of the wiring harness of the imaging module 3, the distal imaging module mounting cavity 221 is used to install the camera module 31 and the lighting module 32, and the proximal imaging module wiring harness hole 222 is used to place and fix the wiring harness of the imaging module 3. This design is also conducive to the miniaturization design of the distal end.

[0045] In some embodiments, since the distal end of the second mounting hole 12 of the first tip seat 1 is blocked, the imaging module 3 can only be installed from the proximal end to the distal end. When installing from the proximal end to the distal end, the size of the tip portion may be increased. The distance between the proximal end axis of the mounting channel 4 and the axis B of the second tip seat is smaller than the distance between the distal end axis of the mounting channel 4 and the axis B of the second tip seat. This increases the installation space 5 of the imaging module 3 at the distal end of the tip portion without increasing the external dimensions of the tip portion, so as to adapt to the size characteristics of the imaging module 3 that is small at the proximal end and large at the distal end. The working channel tube can also avoid the imaging module 3, effectively ensuring that the size of the mounting channel 4 is maximized and adapted to the working channel tube. This structural design can also reduce the size of the proximal end of the tip portion, which is also beneficial to minimizing the size of the tip portion.

[0046] See also Figure 6 In some specific embodiments, the second working channel 21 includes a proximal channel 211 and a distal channel 212, and the proximal channel 211 and the distal channel 212 are arranged in sequence along the axis B direction of the second tip seat, and the distal channel 212 is arranged close to the first tip seat 1, and is connected to the first working channel 13. The axis of the distal channel 212 is arranged at an angle to the axis B of the second tip seat, and the distance between the axis of the distal channel 212 and the axis B of the second tip seat gradually increases in the direction away from the proximal channel 211, so that the size of the installation channel 4 gradually transitions smoothly, and this structural size is adapted to the size change of the third working channel 22, which is also conducive to minimizing the size of the tip end.

[0047] Of course, in other embodiments, the proximal channel 211 and the distal channel 212 have the same size, and a step is formed between the second working channel 21 and the first working channel 13 .

[0048] In order to increase the illumination range and ensure uniform illumination, two lighting modules 32 are provided and are symmetrically arranged on both sides of the camera module 31. Two second mounting holes 12 are provided and are symmetrically arranged on both sides of the first mounting hole 11, which can adapt to the structural characteristics of the imaging module 3.

[0049] See also Figure 3 Since the fixation of the imaging module 3 mainly relies on filling adhesive between the peripheral side of the camera module 31 and the inner wall of the first mounting hole 11, in some embodiments, a partition 17 is provided between the first mounting hole 11 and the second mounting hole 12, and the partition 17 is arranged on the side of the distal end of the first tip seat 1 toward the proximal end of the first tip seat 1, and the partition 17 extends in the direction from the distal end of the first tip seat 1 to the proximal end of the first tip seat 1, so that the first mounting hole 11 and the second mounting hole 12 are isolated from each other, which can effectively prevent the adhesive from overflowing into the second mounting hole 12, thereby avoiding affecting the light-emitting surface of the lighting module 32.

[0050] Of course, in other embodiments, see Figure 7 The first mounting hole 11 and the second mounting hole 12 can also be arranged in communication, and the side wall of the thin-wall feature 14 forms a partial cavity wall of the first mounting hole 11. The camera module 31 can also be fixed by applying adhesive between the side wall of the thin-wall feature 14 and the camera module 31.

[0051] In order to further reduce the size of the tip portion, a shoulder 25 is provided on the outer wall of the second tip seat 2, that is, the distal and proximal ends of the second tip seat 2 are reduced in diameter, and the diameter of the distal end is smaller than the diameter of the proximal end, so that the shoulder 25 is formed on the outside of the second tip seat 2, the proximal end meets the size requirement for connection with the curved portion of the endoscope, and the distal end meets the size requirement for insertion inside the first tip seat 1, and the shoulder 25 abuts against the proximal end of the first tip seat 1, in order to increase the area of ​​connection between the first tip seat 1 and the tip portion and increase the reliability of the connection. , the proximal end of the first tip seat 1 is provided with an annular lip 18, and at least part of the structure of the second tip seat 2 is inserted into the cavity enclosed by the annular lip 18, so that the end face of the shaft shoulder 25 is roughly parallel to the end face of the annular lip 18 and is arranged close to each other. After assembly, there may be a gap between the end face of the shaft shoulder 25 and the end face of the annular lip 18. When the first tip seat 1 and the second tip seat 2 are fixed with glue, part of the glue will overflow into the gap to further improve the fixation of the first tip seat 1 and the second tip seat 2. The outer diameter of the annular lip 18 is equal to the outer diameter of the head end cover, and the inner diameter of the annular lip 18 is larger than the maximum outer diameter of the third mating surface 23 and the fourth mating surface 24 at the distal end of the second tip seat 2, so that it can be inserted into the first tip seat 1.

[0052] See also Figure 4 and Figure 8 In some embodiments, a first boss 26 and a second boss 27 are further provided on the outer wall of the second tip seat 2. The first boss 26 and the second boss 27 have different diameters. A step is formed between the first boss 26 and the second tip seat 2, thereby facilitating the connection between the rubber tube and the snake bone on the endoscope.

[0053] In order to further effectively ensure the reliability of the connection between the second tip seat 2 and the first tip seat 1, after the second tip seat 2 and the first tip seat 1 are assembled, adhesive can also be filled between their mating surfaces, such as between the fourth mating surface 24 and the second mating surface 16, between the inner diameter of the annular lip 18 and the shoulder 25, and between the positioning column 161 and the positioning groove 241.

[0054] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. An endoscope tip, characterized in that: include: A first tip seat, wherein a first mounting hole, a second mounting hole and a first working channel are provided in the first tip seat, wherein the first mounting hole is provided through the first tip seat along the axis direction of the first tip seat, and is used to install a camera module of an imaging module; the second mounting hole is provided on the side of the first mounting hole, and is used to install a lighting module of the imaging module; a thin-wall feature is provided at the distal end of the first tip seat, and is used to block the distal end of the second mounting hole; and the first working channel is provided through the first tip seat along the axis direction of the first tip seat; and A second tip seat, at least part of the structure of the second tip seat is inserted in the first tip seat, the second tip seat is provided with a second working channel and a third working channel which are not connected to each other, the second working channel is connected to the first working channel to form an installation channel, and the installation channel is used to install a working channel tube; the third working channel is connected to the first installation hole and the second installation hole.

2. The endoscope tip according to claim 1, characterized in that: A first mating surface and a second mating surface are arranged side by side in the first tip seat, the first mating surface is formed by the edge of the second mating surface being recessed toward the direction close to the distal end of the first tip seat, the first mounting hole and the second mounting hole are located on the first mating surface, the first working channel is located on the second mating surface, the second mating surface can abut against the distal end of the second tip seat to form an installation space between the second tip seat and the first mating surface, and the installation space is used to accommodate the exposed portion of the imaging module in the first mounting hole and the second mounting hole.

3. The endoscope tip according to claim 2, characterized in that: The second mating surface is provided with a positioning column, and the positioning column extends along the axial direction of the first tip seat to the proximal end of the first tip seat. The second tip seat is provided with a positioning groove, and the positioning column is inserted into the positioning groove.

4. The endoscope tip according to claim 3, characterized in that: A third mating surface and a fourth mating surface are arranged in parallel at the distal end of the second tip seat, the third mating surface is formed by the edge of the fourth mating surface being recessed in the direction close to the proximal end of the second tip seat, the fourth mating surface abuts against the second mating surface so that the third mating surface and the first mating surface are spaced apart to form the installation space; the positioning groove is arranged on the fourth mating surface, the second working channel is located on the fourth mating surface, the third working channel is located on the third mating surface, and the third working channel is connected with the first mounting hole and the second mounting hole through the installation space.

5. The endoscope tip according to claim 1, characterized in that: The third working channel includes a distal imaging module mounting cavity and a proximal imaging module wire beam hole, the distal imaging module mounting cavity and the proximal imaging module wire beam hole are arranged in sequence along the axial direction of the second tip seat, and the distal imaging module mounting cavity is arranged close to the first tip seat, and the cross-sectional area of ​​the distal imaging module mounting cavity at the distal end is larger than its cross-sectional area at the proximal end.

6. The endoscope tip according to claim 1, characterized in that: The distance between the proximal axis of the mounting channel and the axis of the second distal seat is smaller than the distance between the distal axis of the mounting channel and the axis of the second distal seat.

7. The endoscope tip according to claim 1 or 6, characterized in that: The second working channel includes a proximal channel and a distal channel, and the proximal channel and the distal channel are arranged in sequence along the axial direction of the second tip seat, and the distal channel is arranged close to the first tip seat, the axis of the distal channel is arranged at an angle to the axis of the second tip seat, and the distance between the axis of the distal channel and the axis of the second tip seat gradually increases along the direction away from the proximal channel.

8. The endoscope tip portion according to claim 1, characterized in that: There are two second mounting holes, and the two second mounting holes are symmetrically arranged on both sides of the first mounting hole. A partition is arranged between the first mounting hole and the second mounting hole, and the partition is arranged on the side of the distal end of the first tip seat toward the proximal end of the first tip seat, and the partition extends in the direction from the distal end of the first tip seat to the proximal end of the first tip seat, so that the first mounting hole and the second mounting hole are isolated from each other.

9. The endoscope tip portion according to claim 1, characterized in that: An outer wall of the second tip seat is provided with a shaft shoulder, a proximal end of the first tip seat is provided with an annular lip, and at least a part of the structure of the second tip seat is inserted into a cavity formed by the annular lip.

10. An endoscope, characterized in that: It comprises an imaging module, a working channel tube and an endoscope tip as described in any one of claims 1 to 9, wherein the imaging module comprises a camera module and a lighting module, the camera module is arranged in the first mounting hole, the lighting module is arranged in the second mounting hole, and the light emitting surface of the lighting module is spaced apart from the thin-wall feature.

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