Endoscope and endoscope system

Abstract

The utility model relates to an endoscope and an endoscope system. The endoscope comprises an endoscope body, and at least part of the endoscope body is provided with a containing inner cavity in the axial direction. The rod lens group is arranged in the accommodating inner cavity; the pressing piece is arranged in the containing inner cavity and arranged at one end, in the axial direction, of the rod lens set in a pressing mode, and the pressing piece is fixedly connected with the endoscope body; at least part of the adjusting part is arranged in the containing inner cavity, the adjusting part is movably arranged in the axial direction relative to the endoscope body, the pressing part and the rod lens set are arranged on the same side of the adjusting part in the axial direction, and the pressing part and the rod lens set are arranged at intervals; and the eyepiece group is fixedly connected to one side, deviating from the rod lens group, of the adjusting piece. According to the endoscope and the endoscope system provided by the invention, the damage to the rod lens group caused by indirect interference of the adjusting piece to the rod lens group when the eyepiece group is adjusted can be avoided.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to endoscopes and endoscope systems. Background Technology

[0002] An endoscope is a diagnostic instrument that integrates optical, electronic, and software technologies. It enters the body through natural orifices or minimally invasive openings to reach the location of the lesion to be examined, so as to perform real-time dynamic imaging monitoring of the lesion.

[0003] In related technologies, the lens assembly of an endoscope includes an objective lens assembly for imaging, a rod lens assembly for transmitting image information, and an eyepiece assembly for presenting image information. In existing technologies, when adjusting the imaging process, the axial and radial positions of the eyepiece assembly need to be adjusted multiple times to achieve the desired imaging effect.

[0004] However, because the eyepiece assembly and rod endoscope assembly of an endoscope are in contact during assembly, the aforementioned prior art can cause the adjusting components to indirectly interfere with the rod endoscope assembly when adjusting the eyepiece assembly, which can easily lead to damage to the rod endoscope assembly. Utility Model Content

[0005] Therefore, it is necessary to provide an endoscope and endoscope system that can avoid damage to the rod endoscope assembly caused by the adjustment components indirectly interfering with it when adjusting the endoscope assembly.

[0006] In a first aspect, embodiments of this application provide an endoscope, comprising: an endoscope body having at least a partially accommodating cavity along an axial direction; a rod endoscope assembly disposed within the accommodating cavity; a clamping member disposed within the accommodating cavity and clampingly disposed at one axial end of the rod endoscope assembly, the clamping member being fixedly connected to the endoscope body; an adjusting member at least partially disposed within the accommodating cavity, the adjusting member being movably disposed relative to the endoscope body along an axial direction, the clamping member and the rod endoscope assembly being disposed on the same side of the adjusting member along an axial direction and being spaced apart from the adjusting member; and an eyepiece assembly fixedly connected to the side of the adjusting member opposite to the rod endoscope assembly.

[0007] The endoscope provided in this application embodiment has a clamping member and a rod endoscope assembly both located on the same side of the adjusting member along the axial direction and spaced apart from the adjusting member. The eyepiece assembly is fixedly connected to the side of the adjusting member away from the rod endoscope assembly, so that there is no abutting relationship between the eyepiece assembly and the adjusting member and the rod endoscope assembly. During the process of adjusting the position of the eyepiece assembly along the axial direction by adjusting the adjusting member, the adjusting member will not interfere with the rod endoscope assembly, thereby avoiding damage to the rod endoscope assembly.

[0008] In one embodiment, the clamping member is provided with a first through hole, which extends through the clamping member axially, and the end of the rod lens assembly facing the adjusting member is inserted into the first through hole;

[0009] The endoscope also includes a compression spring, which is located between the clamping member and the rod endoscope assembly. One end of the compression spring along the axial direction abuts against the clamping member, and the other end of the compression spring along the axial direction abuts against the rod endoscope assembly. The compression direction of the compression spring is the same as the axial direction.

[0010] In one embodiment, the end face of the clamping member facing away from the adjusting member abuts against the compression spring;

[0011] Alternatively, the inner wall of the first through hole is provided with a first flange, and a compression spring is disposed in the first through hole and disposed on the side of the first flange away from the adjusting member, with the side of the first flange away from the adjusting member abutting against the compression spring.

[0012] In one embodiment, the endoscope includes a light tube with a second through hole that extends axially through the light tube; one end of a rod endpiece is inserted into the second through hole; a compression spring is sleeved on the outside of the light tube; a clamping member is sleeved on the outside of the compression spring; and the compression spring abuts against the rod endpiece through the light tube.

[0013] The outer wall of the light-transmitting tube is provided with a second flange, and a compression spring is provided on the side of the second flange facing the adjusting member, with the compression spring abutting against the second flange.

[0014] In one embodiment, the end of the clamping member facing the adjusting member is provided with a plurality of positioning grooves, which are arranged at intervals along the circumference of the clamping member.

[0015] The multiple positioning grooves include a first positioning groove and a second positioning groove, and the direction from the first positioning groove to the second positioning groove intersects with the axial direction.

[0016] In one embodiment, the axial distance between the clamping member and the adjusting member ranges from 0.2 mm to 1.5 mm.

[0017] In one embodiment, the adjusting member is provided with a third through hole, which extends through the adjusting member axially; the outer wall surface of the eyepiece assembly is provided with a third flange, one end of the eyepiece assembly is disposed in the third through hole, the third flange is disposed outside the third through hole, and the surface of the third flange facing the rod lens assembly abuts against the surface of the adjusting member away from the rod lens assembly.

[0018] In one embodiment, a plurality of openings are provided on the outer wall surface of the adjusting member in the circumferential direction. The plurality of openings are arranged at intervals along the circumferential direction of the adjusting member, and the openings are connected to the third through hole.

[0019] The endoscope includes multiple fasteners, which are correspondingly installed in the openings. The fasteners are inserted into the corresponding openings, and the outer wall of the fastener is threadedly connected to the inner wall of the corresponding opening. Each fastener abuts against the outer wall of the eyepiece assembly.

[0020] In one embodiment, the end face of one end of the endoscope body along the axial direction is the first end face, the first end face is provided with a cavity, the cavity communicates with the accommodating cavity, and the outer wall surface of the adjustment member is provided with a fourth flange in the circumferential direction, the fourth flange is located outside the accommodating cavity, and the size of the fourth flange is larger than the opening size of the cavity.

[0021] And / or, the endoscope also includes a hood, which is fitted over the outside of the endoscope body and the eyepiece assembly;

[0022] And / or, the outer surface of the clamping element and the inner wall surface of the accommodating cavity are threaded together;

[0023] And / or, the outer surface of the adjusting element and the inner wall of the accommodating cavity are threaded together.

[0024] In a first aspect, embodiments of this application provide an endoscope system including the endoscope described in the first aspect above.

[0025] The endoscope system provided in this application includes an endoscope. An adjusting member and a clamping member are spaced apart along the axial direction. The clamping member can separate the adjusting member and the compression spring. During the adjustment of the position of the eyepiece assembly along the axial direction, the adjusting member cannot drive the clamping member and the compression spring to move because it does not contact the clamping member and the compression spring. Consequently, the eyepiece assembly cannot be driven to move, thus avoiding wear on the eyepiece assembly during its movement. Attached Figure Description

[0026] Figure 1 An exploded view of an endoscope provided in an embodiment of this application.

[0027] Figure 2 A partial cross-sectional view of an endoscope provided in an embodiment of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Endoscope; 111. Rod endoscope assembly; 112. Eyepiece assembly; 1123. Third flange; 120. Endoscope body; 121. First end face; 122. Receiving cavity; 130. Clamping element; 131. First through hole; 1311. First flange; 132. Positioning groove; 140. Adjusting element; 141. Opening; 143. Third through hole; 144. Fourth flange; 150. Compression spring; 160. Light tube; 1612. Second flange; 162. Second through hole; 180. Endoscope cover; 190. Spacer tube. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0036] In related technologies, an endoscope may include an objective lens group for imaging, a rod lens group for transmitting image information, and an eyepiece group for presenting image information.

[0037] When adjusting the imaging of an endoscope, the axial position of the eyepiece assembly needs to be adjusted multiple times to achieve the desired imaging effect. An endoscope consists of an eyepiece assembly, an adjustment seat, a rod endoscope assembly, and a spacer tube arranged sequentially. The adjustment seat is used to adjust the axial position of the eyepiece assembly to achieve the desired imaging effect. A compression spring is installed between the adjustment seat and the rod endoscope assembly. The adjustment seat is in direct contact with the compression spring to provide preload force to the spring, thereby providing thrust to the rod endoscope assembly through the compression spring, causing the rod endoscope assembly and the spacer tube to abut against each other. When adjusting the axial position of the eyepiece assembly, it is necessary to control the movement of the adjustment seat towards or away from the rod endoscope assembly. For example, the adjustment seat can be moved towards or away from the rod endoscope assembly by rotating its threads.

[0038] However, since the adjusting seat is in direct contact with the compression spring, the eyepiece assembly and the rod lens assembly are in abutting relationship during assembly. When the adjusting seat is rotated, the compression spring will rotate along with it, which in turn will rotate the rod lens assembly. This causes the edge of the rod lens assembly to rub against the sharp edge of the spacer tube, resulting in edge damage to the rod lens assembly.

[0039] To address the aforementioned issues, embodiments of this application provide an endoscope and an endoscope system that can avoid damage to rod endoscope assemblies.

[0040] The following will combine Figures 1-2 The endoscope 100 and endoscope 100 system provided in the embodiments of this application will be described.

[0041] This application provides an endoscope system, which includes an endoscope 100, a light source, a camera, and a host. The endoscope 100 is connected to the light source via an optical fiber. The light source illuminates human tissue via the optical fiber. The endoscope 100 is used to acquire the light reflected from the human tissue and transmit the light signal to the camera. One end of the camera is connected to the endoscope 100, and the other end of the camera is connected to the host. The camera is used to convert the light signal transmitted by the endoscope 100 into an electrical signal and transmit the electrical signal to the host. The host is used to process the electrical signal and output an image.

[0042] For example, the light source can be white light or other colored light, and the light source is guided to the front end through optical fiber so as to be emitted as illumination light.

[0043] For example, the camera has a light sensor and a processor. The light sensor acquires the light emitted from the endoscope 100 and converts the light signal into an electrical signal. The processor amplifies, filters and performs other preprocessing on the electrical signal before sending it to the host.

[0044] For example, endoscope 100 includes, but is not limited to, a laparoscope, an arthoscope, a neurosurgical endoscope, or other endoscopes.

[0045] The endoscope 100 provided in the embodiments of this application will be described below.

[0046] See Figure 1 and Figure 2 This application provides an endoscope 100, which includes an endoscope body 120. An internal cavity 122 is disposed within the endoscope body 120, extending along an axial direction A through at least a portion of the endoscope body 120. The endoscope 100 may include a rod endoscope assembly 111, which is disposed within the internal cavity 122. The rod endoscope assembly 111 can be used to transmit real images.

[0047] See Figure 1 and Figure 2 The endoscope 100 may include a clamping member 130, which is disposed in the accommodating cavity 122 and clamped to one end of the rod endoscope assembly 111 along the axial direction A. The clamping member 130 is fixedly connected to the endoscope body 120 and can limit the rod endoscope assembly 111 along the axial direction A through the clamping member 130.

[0048] For example, the outer surface of the clamping member 130 is threadedly connected to the inner wall of the accommodating cavity 122, thereby reducing the difficulty of connecting the outer surface of the clamping member 130 and the inner wall of the accommodating cavity 122. This helps to reduce the difficulty of assembling and disassembling the clamping member 130 and the endoscope body 120. After the clamping member 130 is assembled with the endoscope body 120, a relatively fixed connection is formed. In addition, the pressure of the clamping member 130 on the compression spring 150 can be adjusted by rotating the clamping member 130, thereby adjusting the preload of the compression spring 150 on the rod endoscope assembly 111.

[0049] For example, a spacer tube 190 is provided on the side of the rod lens assembly 111 away from the eyepiece assembly 112. The rod lens assembly 111 can be pressed by the clamping member 130, so that the rod lens assembly 111 abuts against the spacer tube 190.

[0050] In some embodiments, a third lens may be provided on the side of the spacer tube 190 away from the bar lens group 111. The third lens may include an objective lens, which can be used to acquire information about the target under test and form a real image.

[0051] See Figure 1 and Figure 2 The endoscope 100 may include an adjustment member 140, at least a portion of which may be disposed within the accommodating cavity 122. The adjustment member 140 is movably disposed relative to the endoscope body 120 along the axial direction A, thereby allowing the adjustment member 140 to move toward or away from the clamping member 130. The distance between the adjustment member 140 and the clamping member 130 may be adjusted, as may the position of the adjustment member 140 within the accommodating cavity 122 along the axial direction A. Furthermore, the clamping member 130 and the rod endoscope assembly 111 are both disposed on the same side of the adjustment member 140 along the axial direction A, and the clamping member 130 and the rod endoscope assembly 111 are spaced apart from the adjustment member 140. The adjustment member 140 is spaced apart on the side of the clamping member 130 away from the spacer tube 190. Thus, by positioning the adjusting member 140 at intervals on one side of the clamping member 130 and the rod lens assembly 111 along the axial direction A, there is no abutting relationship between the adjusting member 140 and the rod lens assembly 111. During the adjustment of the position of the adjusting member 140 along the axial direction A, the adjusting member 140 will not interfere with the rod lens assembly 111, thereby avoiding damage to the rod lens assembly 111.

[0052] In the embodiment with compression spring 150, adjusting member 140 and clamping member 130 are spaced apart along axial direction A. Clamping member 130 can separate adjusting member 140 and compression spring 150. During the adjustment of the position of eyepiece assembly 111 along axial direction A, adjusting member 140 can be rotated. Since adjusting member 140 does not contact clamping member 130 and compression spring 150, it cannot drive clamping member 130 and compression spring 150 to rotate, and thus cannot drive rod lens assembly 111 to rotate. This can prevent rod lens assembly 111 from rotating relative to spacer tube 190 and being damaged by spacer tube 190, thereby avoiding damage to rod lens assembly 111 during imaging adjustment. This helps to extend the service life of rod lens assembly 111 and endoscope 100, and improve product quality and stability. Furthermore, by separating and independently setting the adjusting member 140 and the clamping member 130, the clamping member 130 will not move during the rotation of the adjusting member 140, and will always provide the appropriate required pressure to the compression spring 150. This is beneficial for the compression spring 150 to provide a continuous and constant clamping force to the rod endoscope assembly 111. This pressure will not change due to the adjustment of the position of the adjusting member 140, thereby avoiding the inconsistency of the preload of the compression spring 150 caused by different relative distances between the rod endoscope assembly 111 and the eyepiece assembly 112. This avoids the rod endoscope assembly 111 being either not clamped tightly or being clamped too tightly, which is beneficial to improving the imaging quality of the endoscope 100. If the rod endoscope assembly 111 is not clamped tightly, it will cause the rod endoscope assembly 111 to vibrate during use or transportation. If the rod endoscope assembly 111 is clamped too tightly, it will cause the rod endoscope assembly 111 to break. Both of these situations will affect the imaging quality of the endoscope 100.

[0053] For example, the outer surface of the adjusting member 140 and the inner wall of the accommodating cavity 122 are threaded together, which makes the connection between the outer surface of the adjusting member 140 and the inner wall of the accommodating cavity 122 easier and helps to reduce the difficulty of disassembling the adjusting member 140 and the endoscope body 120. In addition, the position of the adjusting member 140 and the eyepiece assembly 112 along the axial direction A can be adjusted by rotating the adjusting member 140, thereby adjusting the distance between the adjusting member 140 and the clamping member 130 along the axial direction A, and thus adjusting the distance between the rod lens assembly 111 and the eyepiece assembly 112 along the axial direction A.

[0054] join Figure 1 and Figure 2 The endoscope 100 may include an eyepiece assembly 112, which is used to present a real image of the target being measured. The eyepiece assembly 112 is located on the side of the adjustment member 140 away from the rod lens assembly 111. The adjustment member 140 is fixedly connected to the eyepiece assembly 112 so that when the adjustment member 140 moves toward or away from the clamping member 130, it drives the eyepiece assembly 112 to move toward or away from the clamping member 130, thereby adjusting the distance between the rod lens assembly 111 and the eyepiece assembly 112 to achieve the desired imaging effect.

[0055] In some embodiments, see Figure 1 and Figure 2 The clamping member 130 is provided with a first through hole 131, which extends through the clamping member 130 along the axial direction A, allowing light to pass through. One end of the rod endpiece assembly facing the adjusting member 140 is inserted into the first through hole 131. The endoscope 100 also includes a compression spring 150, which is disposed between the clamping member 130 and the rod endpiece assembly 111. One end of the compression spring 150 along the axial direction A abuts against the clamping member 130, and the other end of the compression spring 150 along the axial direction A abuts against the rod endpiece assembly 111. The compression direction of the compression spring 150 is the same as that along the axial direction A. By providing the compression spring 150, a preload can be provided to the rod endpiece assembly 111, ensuring stable contact between the rod endpiece assembly 111 and the spacer tube 190.

[0056] For example, the compression spring 150 may be fitted onto the outside of the rod lens assembly 111.

[0057] In some embodiments, the side of the clamping member 130 facing away from the eyepiece assembly 112 abuts against the compression spring 150, thus eliminating the need for a structure on the clamping member 130 to abut against the compression spring 150. This makes the structure of the clamping member 130 simpler, which helps to save installation space and reduce the manufacturing cost of the clamping member 130.

[0058] In other embodiments, see Figure 1 and Figure 2 A compression spring 150 is disposed in the first through hole 131, that is, the clamping member 130 is sleeved on the outside of the compression spring 150, so that the clamping member 130 guides the extension and retraction of the compression spring 150. In addition, the clamping member 130 provides a good limiting effect on the compression spring 150. The inner wall surface of the first through hole 131 is provided with a first flange 1311. The compression spring 150 is disposed on the side of the first flange away from the eyepiece assembly 112. The surface of the first flange 1311 away from the eyepiece assembly 112 abuts against the compression spring 150, and the first flange 1311 can limit one end of the compression spring 150. This embodiment of the application is described using the abutment between the compression spring 150 and the first flange 1311 as an example.

[0059] In some embodiments, see Figure 1 and Figure 2The endoscope 100 includes a light-transmitting tube 160, in which a second through-hole 162 is provided. The second through-hole 162 extends through the light-transmitting tube 160 along the axial direction A, allowing light to pass through. One end of a rod endpiece 111 is inserted into the second through-hole 162. A compression spring 150 is sleeved on the outside of the light-transmitting tube 160, and a clamping member 130 is sleeved on the outside of the compression spring 150. The light-transmitting tube 160, the compression spring 150, and the clamping member 130 are sequentially sleeved from the inside to the outside. The compression spring 150 abuts against the rod endpiece 111 through the light-transmitting tube 160, thereby preventing the compression spring 150 from directly contacting the rod endpiece 111 and damaging it. In addition, the contact area between the light-transmitting tube 160 and the rod endpiece 111 is relatively large, which helps to improve the stability of the compression spring 150 abutting against the rod endpiece 111.

[0060] For example, the outer wall surface of the light-transmitting tube 160 is provided with a second flange 1612. A compression spring 150 is sleeved on the light-transmitting tube 160 to be sleeved on the outside of the rod lens assembly 111. The compression spring 150 is located on the side of the second flange 1612 facing the adjusting member 140, and the end of the compression spring 150 facing the spacer tube 190 abuts against the side of the second flange 1612 facing away from the spacer tube 192. That is, the two ends of the compression spring 150 along the axial direction A abut against the first flange 1311 and the second flange 1612 respectively.

[0061] For example, the second through hole 162 may include a first sub-through hole and a second sub-through hole. The opening size of the first sub-through hole is smaller than the opening size of the second sub-through hole and the radial dimension of the rod lens assembly 111. The first sub-through hole is located on the side of the second sub-through hole facing the adjusting member 140. One end of the rod lens assembly 111 is inserted into the second sub-through hole. The rod lens assembly 111 cannot extend into the first sub-through hole, and the light tube 160 at the first sub-through hole abuts against the surface of the rod lens assembly 111 facing the eyepiece assembly 112.

[0062] In some embodiments, see Figure 1 The clamping member 130 has multiple positioning grooves 132 at one end facing the eyepiece assembly 112. These positioning grooves 132 are spaced apart circumferentially along the clamping member 130. By engaging a torque wrench (torque screwdriver) with the positioning grooves 132, the clamping member 130 can be rotated to move towards or away from the eyepiece assembly 112. When moving away from the eyepiece assembly 112, the surface of the first flange 1311 facing away from the eyepiece assembly 112 gradually applies axial pressure to the compression spring 150, thereby causing the end face of the rod lens assembly 111 facing away from the eyepiece assembly 112 to fit tightly against the spacer tube 190. Furthermore, by adjusting the preload of the torque wrench, the pressure between the end face of the rod lens assembly 111 facing away from the eyepiece assembly 112 and the spacer tube 190 is moderate, ensuring that the endoscope 100 is in good working condition.

[0063] For example, the plurality of positioning grooves 132 include a first positioning groove and a second positioning groove. The direction from the first positioning groove to the second positioning groove intersects the axial direction A. For example, the direction from the first positioning groove to the second positioning groove is perpendicular to the axial direction A. The direction from the first positioning groove to the second positioning groove can be the radial direction of the rod lens assembly 111. In this way, the distance between the first positioning groove and the second positioning groove along the circumferential direction of the clamping member 130 is relatively large, which is beneficial to improving the uniformity of the force applied by the torque wrench to the clamping member 130.

[0064] For example, the distance between the clamping member 130 and the adjusting member 140 along the axial direction A ranges from 0.2mm to 1.5mm. This avoids the distance being too small, which reduces the assembly difficulty between the adjusting member 140 and the clamping member 130, and also avoids the distance being too large, which helps to reduce the size of the endoscope 100. For example, the distance between the clamping member 130 and the adjusting member 140 along the axial direction A can be 0.2mm, 0.5mm, 1mm, 1.2mm, 1.5mm, or any value between 0.2mm and 1.5mm.

[0065] In some embodiments, see Figure 1 and Figure 2 The adjusting member 140 is provided with a third through hole 143, which extends through the adjusting member 140 along the axial direction A, allowing light to pass through. The outer wall surface of the eyepiece assembly 112 is provided with a third flange 1123. One end of the eyepiece assembly 112 is located in the third through hole 143, and the third flange 1123 is located outside the third through hole 143. The surface of the third flange 1123 facing the rod lens assembly 111 abuts against the surface of the adjusting member 140 facing away from the rod lens assembly 111. During the assembly of the eyepiece assembly 112 into the third through hole 143, the third flange 1123 prevents the eyepiece assembly 112 from extending too far into the third through hole 143. The third flange 1123 restricts the position of the eyepiece assembly 112 relative to the third through hole 143 and reduces the assembly difficulty of the eyepiece assembly 112.

[0066] In some embodiments, see Figure 1 and Figure 2 The adjusting member 140 has multiple openings 141 on its circumferential outer wall surface. The multiple openings 141 are arranged at intervals along the circumference of the adjusting member 140, and the openings 141 communicate with the third through hole 143. The endoscope 100 includes multiple fixing members, which are correspondingly arranged with the openings 141. The fixing members are inserted into the corresponding openings 141, and each fixing member abuts against the outer wall surface of the eyepiece assembly 112. By setting multiple fixing members, the eyepiece assembly 112 can be fixed in the third through hole 143 to prevent the eyepiece assembly 112 from falling out of the third through hole 143.

[0067] For example, the outer wall of the fastener and the inner wall of the corresponding opening 141 are threaded together, which can reduce the difficulty of connecting the fastener and the adjusting member 140 and reduce the difficulty of disassembling the eyepiece assembly 112.

[0068] For example, fasteners may include screws, bolts, etc.

[0069] In some embodiments, see Figure 1 and Figure 2 The end face of the endoscope body 120 along the axial direction A is the first end face 121. The first end face 121 is provided with a cavity, which communicates with the accommodating cavity 122. The outer wall surface of the adjusting member 140 is provided with a fourth flange 144. Part of the adjusting member 140 is located in the accommodating cavity 122, and another part of the adjusting member 140 is located outside the accommodating cavity 122. The fourth flange 144 is located outside the accommodating cavity 122. The radial dimension of the fourth flange 144 is larger than the opening size of the cavity of the first end face 121. The fourth flange 144 cannot enter the accommodating cavity 122 through the cavity. Thus, the fourth flange 144 can prevent the adjusting member 140 from extending too far into the accommodating cavity 122, and can maintain the distance between the adjusting member 140 and the clamping member 130, avoiding contact between the adjusting member 140 and the clamping member 130.

[0070] In some embodiments, see Figure 1 and Figure 2 The endoscope 100 also includes a hood 180, which is fitted around one end of the endoscope body 120 and the outside of the eyepiece assembly 112. The hood 180 is fitted around the end of the endoscope body 120 near the first end face 121 to protect the eyepiece assembly 112 and part of the endoscope body 120.

[0071] For example, the endoscope 100 is installed as follows: the rod endoscope assembly 111, the light tube 160, and the compression spring 150 are sequentially inserted into the receiving cavity 122 of the endoscope body 120. A special torque wrench is used to screw the clamping member 130 into the endoscope body 120. The eyepiece assembly 112 is then inserted into the adjusting member 140, at which point the third flange 1123 of the eyepiece assembly 112 contacts the surface of the adjusting member 140 opposite to the rod endoscope assembly 111. A corresponding fixing member is inserted into the opening 141 of the adjusting member 140 to prevent the eyepiece assembly 112 from falling out. The adjusting member 140 is then inserted into the endoscope body 120, and the adjusting member 140 is rotated back and forth to achieve the optimal imaging state for the endoscope 100. Finally, the endoscope cover 180 is installed to seal the endoscope 100.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An endoscope, characterized by, The endoscope comprises: an endoscope body, which is at least partially provided with a receiving cavity along an axial direction; a rod lens group arranged in the receiving cavity; a pressing member arranged in the receiving cavity and pressing an end of the rod lens group along the axial direction, the pressing member being fixedly connected to the endoscope body; an adjusting member at least partially arranged in the receiving cavity, the adjusting member being movably arranged along the axial direction relative to the endoscope body, the pressing member and the rod lens group being arranged on the same side of the adjusting member along the axial direction and being spaced apart from the adjusting member; an eyepiece group fixedly connected to a side of the adjusting member away from the rod lens group.

2. The endoscope of claim 1, wherein, The pressing member is provided with a first through hole penetrating the pressing member along the axial direction, and an end of the rod lens group facing the adjusting member is inserted into the first through hole; The endoscope further comprises a compression spring arranged between the pressing member and the rod lens group, one end of the compression spring along the axial direction abutting against the pressing member, and the other end of the compression spring along the axial direction abutting against the rod lens group, the compression direction of the compression spring being the same as the axial direction.

3. The endoscope of claim 2, wherein, An end face of the pressing member away from the adjusting member abuts against the compression spring; Alternatively, an inner wall surface of the first through hole is annularly provided with a first flange, the compression spring is arranged in the first through hole and on a side of the first flange away from the adjusting member, and a face of the first flange away from the adjusting member abuts against the compression spring.

4. The endoscope of claim 2, wherein, The endoscope comprises a light pipe, the light pipe is provided with a second through hole penetrating the light pipe along the axial direction, one end of the rod lens group is inserted into the second through hole, the compression spring is sleeved outside the light pipe, the pressing member is sleeved outside the compression spring, and the compression spring abuts against the rod lens group through the light pipe; An outer wall surface of the light pipe is annularly provided with a second flange, the compression spring is arranged on a side of the second flange facing the adjusting member, and the compression spring abuts against the second flange.

5. The endoscope of any one of claims 1-4, wherein, An end of the pressing member facing the adjusting member is provided with a plurality of positioning grooves, the positioning grooves being spaced apart along the circumferential direction of the pressing member; The plurality of positioning grooves comprise a first positioning groove and a second positioning groove, and the direction of the first positioning groove to the second positioning groove intersects the axial direction.

6. The endoscope of any one of claims 1-4, wherein, The distance between the pressing member and the adjusting member along the axial direction ranges from 0.2 mm to 1.5 mm.

7. The endoscope of any one of claims 1-4, wherein, The adjusting member is provided with a third through hole penetrating the adjusting member along the axial direction, an outer wall surface of the eyepiece group is annularly provided with a third flange, one end of the eyepiece group is arranged in the third through hole, the third flange is arranged outside the third through hole, and a face of the third flange facing the rod lens group abuts against a face of the adjusting member away from the rod lens group.

8. The endoscope of claim 7, wherein, An outer wall surface of the adjusting member in the circumferential direction is provided with a plurality of openings, the openings being spaced apart along the circumferential direction of the adjusting member, and the openings being in communication with the third through hole. The endoscope comprises a plurality of fixing members corresponding to the openings, the fixing members are inserted into the corresponding openings, and the outer wall surface of the fixing members is threadedly connected with the inner wall surface of the corresponding openings; each of the fixing members abuts against the outer wall surface of the ocular lens group.

9. The endoscope of any one of claims 1-4, wherein, The endoscope body has a first end face at one end along the axial direction, the first end face is provided with a cavity opening, the cavity opening is in communication with the accommodating inner cavity, the outer wall surface of the adjusting member in the circumferential direction is annularly provided with a fourth flange, the fourth flange is located outside the accommodating inner cavity, and the size of the fourth flange is greater than the opening size of the cavity opening; And / or, the endoscope further comprises a lens cover, the lens cover is sleeved outside the endoscope body and the ocular lens group; And / or, the outer surface of the pressing member is threadedly connected with the inner wall surface of the accommodating inner cavity; And / or, the outer surface of the adjusting member is threadedly connected with the inner wall surface of the accommodating inner cavity.

10. An endoscope system characterized by comprising: The endoscope comprises the endoscope according to any one of claims 1-9. The endoscope comprises the endoscope according to any one of claims 1-9.

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