Endoscope eyepiece end structure

Abstract

The utility model relates to an eyepiece end structure of an endoscope. The eyepiece end structure comprises a front end lens and an eyepiece lens which are sequentially arranged in the direction of incident light. The endoscope eyepiece end structure further comprises an endoscope body assembly and an adjusting assembly. The lens body assembly comprises a lens body, and the front-end lens is arranged in the lens body; the adjusting assembly comprises an adjusting seat, the adjusting seat is arranged at one end of the lens body, and the eyepiece lens is arranged in the adjusting seat; the adjusting assembly has a fixed state and a movable state; in a fixed state, the adjusting seat is fixedly connected to the mirror body; in the movable state, the adjusting seat is used for adjusting the relative position between the adjusting seat and the lens body so as to adjust the axial position between the front-end lens and the front-end lens. According to the endoscope eyepiece end structure, the position of the eyepiece lens of the endoscope eyepiece end structure relative to the front end lens can be adjusted.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to the structure of the eyepiece end of an endoscope. Background Technology

[0002] An endoscope is a medical testing instrument that integrates optical and mechanical structures. It can be inserted into the body through natural passages or minimally invasive incisions to provide doctors with images for examination or surgical treatment.

[0003] In the manufacturing process of existing endoscopes, due to unavoidable processing and assembly errors, the positions of the eyepiece and the anterior lens of the endoscope will deviate to a certain extent. To achieve the best imaging quality, the anterior lens needs to be assembled first, and then the eyepiece needs to be assembled to match the anterior lens. However, after the eyepiece and the anterior lens are assembled, the position of the eyepiece relative to the anterior lens cannot be adjusted. Utility Model Content

[0004] Therefore, it is necessary to provide an endoscope eyepiece end structure to solve the problem of not being able to adjust the position of the endoscope eyepiece relative to the front lens.

[0005] An endoscope eyepiece end structure includes a front end lens and an eyepiece lens arranged sequentially along the incident light direction. The endoscope eyepiece end structure further includes:

[0006] The lens assembly includes a lens body, with a front lens disposed within the lens body;

[0007] The adjustment assembly includes an adjustment seat located at one end of the lens body, and an eyepiece located inside the adjustment seat;

[0008] The adjustment assembly includes a fixed state and an active state; in the fixed state, the adjustment seat is fixedly connected to the lens body; in the active state, the adjustment seat is used to adjust the relative position between itself and the lens body, so as to adjust the axial position between the field lens and the front lens.

[0009] In some embodiments, the adjustment assembly further includes a snap-fit ​​member; one of the lens body and the adjustment seat includes a first mating portion and the other includes a second mating portion, the first mating portion being sleeved on the outside of the second mating portion;

[0010] In the fixed state, the snap-fit ​​component passes through the first mating part and abuts against the second mating part; in the movable state, the snap-fit ​​component separates from the second mating part.

[0011] In some embodiments, the endoscope eyepiece end structure further includes:

[0012] The lens barrel assembly includes a first adjusting member; the first adjusting member is disposed within an adjusting seat, and the first adjusting member and the adjusting seat are axially movably connected;

[0013] The eyepiece is located inside the first adjusting member and is connected to the first adjusting member.

[0014] In some embodiments, an aperture is provided at the end of the first adjusting member facing the front lens;

[0015] The lens barrel assembly also includes a second adjustment member, part of which is connected to the eyepiece lens, and part of which is axially movably connected to the end of the first adjustment member away from the front lens.

[0016] In some embodiments, along the axial direction, the orthographic projection of the end of the first adjustment member facing the aperture is located within the orthographic projection of the end of the first adjustment member away from the aperture.

[0017] In some embodiments, the second adjusting member and the eyepiece are bonded together; and / or

[0018] In the fixed state, the snap-fit ​​element abuts against one of the lens body and the adjustment base, and the snap-fit ​​element is bonded to the other of the lens body and the adjustment base; and / or

[0019] A threaded connection exists between the first adjusting element and the adjusting seat; and / or

[0020] The first adjusting component and the aperture are integrally molded structures.

[0021] In some embodiments, the surface of the adjustment seat is provided with a groove. In the fixed state, the snap-fit ​​member passes through the mirror body, is embedded in the groove, and abuts against the bottom wall of the groove.

[0022] In some embodiments, there are multiple snap-fit ​​components, and in a fixed state, the multiple snap-fit ​​components are arranged at intervals along the circumference of the lens body.

[0023] In some embodiments, the lens barrel assembly further includes:

[0024] The limiting member is sleeved on the outside of the first adjusting member and is axially connected to the first adjusting member. The limiting member is located on the side of the adjusting seat away from the front lens.

[0025] In the fixed state, the limiting member abuts against the adjusting seat.

[0026] In some embodiments, the endoscope includes an endoscope body, an endoscope tube, and a connector, with the endoscope tube and the connector respectively located at opposite ends of the endoscope body, and the end of the endoscope tube away from the endoscope body being used for insertion into the treatment site.

[0027] The end of the connector away from the lens body forms a first mating part or a second mating part; the front lens is located inside the connector.

[0028] The aforementioned endoscope eyepiece end structure includes a front lens and an eyepiece arranged sequentially along the incident light direction. The endoscope eyepiece end structure also includes an endoscope body assembly and an adjustment assembly. The endoscope body assembly includes an endoscope body, with the front lens disposed within the endoscope body; the adjustment assembly includes an adjustment seat located at one end of the endoscope body, with the eyepiece disposed within the adjustment seat; the adjustment assembly has a fixed state and a movable state; in the fixed state, the adjustment seat is fixedly connected to the endoscope body; in the movable state, the adjustment seat is used to adjust the relative position between itself and the endoscope body along the axis of the adjustment seat, thereby adjusting the axial position between the eyepiece and the front lens.

[0029] The endoscope eyepiece end structure of this application has a front lens disposed in the endoscope body and an eyepiece disposed in an adjustment seat. The adjustment component includes a fixed state and a movable state. In the fixed state, the adjustment seat is fixedly connected to the endoscope body. In the movable state, the adjustment seat is used to adjust the relative position between itself and the endoscope body, thereby adjusting the axial position between the eyepiece and the front lens, thus realizing the adjustment of the axial position of the eyepiece relative to the front lens of the endoscope eyepiece end structure. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the endoscope eyepiece end structure in one embodiment of this application.

[0031] Figure 2 for Figure 1 Exploded view of the eyepiece end structure of a medium endoscope.

[0032] Figure 3 for Figure 1 A partial cross-sectional view of the eyepiece end structure of a medium endoscope.

[0033] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0034] Figure 5 This is a schematic diagram of the connection between the lens barrel assembly and the adjustment seat in one embodiment of this application.

[0035] Figure 6 This is a schematic diagram of the lens barrel assembly in one embodiment of this application.

[0036] Figure 7 This is a schematic diagram of the connection between the eyepiece and the second adjusting member in one embodiment of this application.

[0037] Figure 8 This is a schematic diagram of the adjustment seat in this application.

[0038] Figure 9 This is a schematic diagram of the structure of the mirror body in this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Endoscope eyepiece end structure; 11. Front lens; 12. Eyepiece lens; 13. Endoscope body assembly; 131. Endoscope body; 1311. Endoscope body; 1312. Endoscope tube; 1313. Connector; 14. Adjustment assembly; 141. Adjustment seat; 1411. Groove; 142. Snap-fit; 15. Endoscope tube assembly; 151. First adjustment component; 1511. Aperture; 152. Second adjustment component; 153. Limiting component; 154. Endoscope base. Detailed Implementation

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] See Figure 1 , Figure 2 and Figure 3 As shown. An embodiment of this application provides an endoscope eyepiece end structure 1, including a front end lens 11 and an eyepiece lens 12 arranged sequentially along the incident light direction. The endoscope eyepiece end structure 1 also includes a scope body assembly 13 and an adjustment assembly 14. The scope body assembly 13 includes a scope body 131, with the front end lens 11 disposed within the scope body 131; the adjustment assembly 14 includes an adjustment seat 141, which is disposed at one end of the scope body 131, with the eyepiece lens 12 disposed within the adjustment seat 141; the adjustment assembly 14 includes a fixed state and a movable state; in the fixed state, the adjustment seat 141 is fixedly connected to the scope body 131; in the movable state, the adjustment seat 141 is used to adjust the relative position between itself and the scope body 131 (the relative position includes at least the position along the axial direction of the adjustment seat 141), so as to adjust the axial position between the eyepiece lens 12 and the front end lens 11.

[0047] It should be noted that the incident light direction of the lens is on the same axis as the lens's axis, that is, the incident light direction is... Figure 2 and Figure 3 The X direction is opposite, and the axis is Figure 2 and Figure 3 The X axis is the direction of both positive and negative, and it is also the extension direction of the adjustment seat 141, which is the same as the extension direction of the lens body 131, the front lens 11, and the eyepiece 12. Correspondingly, the direction perpendicular to this axis is the radial direction of the front lens 11.

[0048] It should be further noted that the front lens 11 is the lens on the side closer to the incident light direction relative to the eyepiece 12. In other words, the front lens 11 is the lens on the side closer to the observation area (i.e., the object side) relative to the eyepiece 12. It can be understood that, along the direction of the incident light, the front lens 11 is the front end relative to the eyepiece 12. Of course, the lens types of the front lens 11 and the eyepiece 12 are not restrictive, and their types will not be elaborated upon here.

[0049] It should be noted that the term "front lens 11" does not imply that the number of front lenses 11 is unique, nor does it imply the specific type of front lens 11. Any lens that is closer to the treatment site than the eyepiece lens 12 is considered a front lens 11. Therefore, there are no further restrictions on the specific type and number of front lenses 11 and eyepiece lenses 12.

[0050] Specifically, the front lens 11 is housed within the scope body 131. On one hand, the scope body 131 protects the front lens 11, preventing external environmental contamination that could affect its normal imaging. On the other hand, the scope body 131 fixes the front lens 11, thus fixing its position relative to the treatment site. Since the eyepiece 12 is housed within the adjustment seat 141, the axial position of the eyepiece 12 relative to the front lens 11 can be adjusted by switching between different states of the adjustment assembly 14.

[0051] In the fixed state, the adjustment seat 141 is fixedly connected to the endoscope body 131; in the movable state, the adjustment seat 141 is used to adjust the relative position between the endoscope body 131 and the endoscope body along the axis of the adjustment seat 141, thereby adjusting the axial position between the eyepiece lens 12 and the front lens 11, thereby realizing the adjustment of the axial position of the eyepiece lens 12 of the endoscope eyepiece end structure 1 relative to the front lens 11.

[0052] Furthermore, in the active state, when the axial position of the eyepiece 12 relative to the front lens 11 is adjusted to a suitable state, the adjustment component can be switched to the fixed state, thereby fixing the adjustment seat 141 to the lens body 131. This ensures that the axial position of the eyepiece 12 relative to the front lens 11 remains fixed, thus preventing the adjustment seat 141 from tilting or shifting relative to the lens body 131, and consequently preventing the eyepiece 12 from tilting or shifting relative to the front lens 11, ensuring the reliability of the adjustment process.

[0053] In some embodiments, the adjustment assembly 14 further includes a snap-fit ​​member 142; one of the lens body 131 and the adjustment seat 141 includes a first mating portion, and the other includes a second mating portion, with the first mating portion sleeved on the outside of the second mating portion. In the fixed state, the snap-fit ​​member 142 passes through the first mating portion and abuts against the second mating portion; in the movable state, the snap-fit ​​member 142 is separated from the second mating portion.

[0054] Specifically, one of the lens body 131 and the adjusting seat 141 includes a first mating part, and the other includes a second mating part. The first mating part is sleeved on the outside of the second mating part. In the fixed state, the snap-fit ​​member 142 passes through the first mating part and abuts against the second mating part. That is, the lens body 131 in this application can be sleeved on the outside of the adjusting seat 141. In the fixed state, the snap-fit ​​member 142 passes through the lens body 131 and abuts against the adjusting seat 141. Similarly, the adjusting seat 141 can be sleeved on the outside of the lens body 131. In the fixed state, the snap-fit ​​member 142 passes through the adjusting seat 141 and abuts against the lens body 131. For ease of explanation, this application uses the method of sleeved on the outside of the adjusting seat 141 and in the fixed state, the snap-fit ​​member 142 passes through the lens body 131 and abuts against the adjusting seat 141 as an example for explanation.

[0055] Since the front lens 11 is located inside the endoscope body 131 and the eyepiece 12 is located inside the adjustment seat 141, in the fixed state, the locking member 142 passes through the endoscope body 131 and abuts against the adjustment seat 141; in the movable state, the locking member 142 separates from the adjustment seat 141, so that the position of the eyepiece 12 relative to the front lens 11 can be adjusted by the movement of the adjustment seat 141 relative to the endoscope body 131. In the fixed state, the locking member 142 abuts against the adjustment seat 141, so that the position of the eyepiece 12 relative to the front lens 11 can be fixed by the fixation of the adjustment seat 141 relative to the endoscope body 131. Thus, the eyepiece 12 of the endoscope eyepiece end structure 1 can be accurately adjusted.

[0056] Furthermore, in the active state, the locking member 142 is separated from the adjusting seat 141, meaning the adjusting seat 141 is separated from the locking member 142 in both the axial and radial directions. At this time, the adjusting seat 141 can move relative to the lens body 131 in both the axial and radial directions, thereby allowing the eyepiece 12 to be adjusted relative to the front lens 11 in both the axial and radial directions. Further, when the position of the eyepiece 12 relative to the front lens 11 is adjusted to a suitable state, the adjusting assembly 14 is switched to the fixed state. The locking member 142 abuts against the adjusting seat 141, ensuring that the end face of the adjusting seat 141 is tightly against the end face of the lens body 131. This prevents the adjusting seat 141 from tilting or shifting relative to the lens body 131, and consequently, prevents the eyepiece 12 from tilting or shifting relative to the front lens 11, thus avoiding any angle between the eyepiece 12 and the front lens 11 and ensuring the reliability of the adjustment process.

[0057] Similarly, after the radial and axial adjustment of the eyepiece lens 12 relative to the front lens 11, the eyepiece lens 12 is fixed relative to the front lens 11 by the snap-fit ​​142 abutting against the adjustment seat 141. Since the tilting and movement of the eyepiece lens 12 relative to the front lens 11 can be avoided, the performance and reliability of the endoscope eyepiece end structure 1 are also improved, and the imaging effect of the eyepiece lens 12 and the front lens 11 is guaranteed.

[0058] In some embodiments, see Figure 4 and Figure 5 As shown, the endoscope eyepiece end structure 1 also includes a endoscope tube assembly 15. The endoscope tube assembly 15 includes a first adjusting member 151. The first adjusting member 151 is disposed within the adjusting seat 141, and the first adjusting member 151 and the adjusting seat 141 are axially movably connected; the eyepiece 12 is disposed within the first adjusting member 151 and is connected to the first adjusting member 151.

[0059] Thus, since the eyepiece 12 is located within the first adjusting member 151, and the first adjusting member 151 is axially connected to the adjusting seat 141, the first adjusting member 151 can move axially relative to the adjusting seat 141 through the axial connection between the first adjusting member 151 and the adjusting seat 141. This, in turn, can drive the eyepiece 12 to move axially, thereby further realizing the adjustment of the eyepiece 12 relative to the front lens 11 in the axial direction, thereby further improving the accuracy and reliability of the adjustment process.

[0060] Furthermore, since this application can adjust the position of the eyepiece 12 relative to the front lens 11 in the radial direction by the contact and separation between the snap-fit ​​member 142 and the adjusting seat 141, and can also adjust the position of the eyepiece 12 relative to the front lens 11 in the axial direction by the movement of the adjusting seat 141 relative to the first adjusting member 151 relative to the adjusting seat 141, the axial adjustment and radial adjustment are independent of each other and do not affect each other, thereby simplifying the adjustment operation process and facilitating the operation of the operator.

[0061] In some embodiments, the first adjusting member 151 and the adjusting seat 141 are threadedly connected.

[0062] Thus, the first adjusting member 151 can be moved axially relative to the adjusting seat 141 via a threaded connection, thereby achieving axial adjustment of the eyepiece 12 relative to the front lens 11. Simultaneously, the threaded connection between the first adjusting member 151 and the adjusting seat 141 enables high-precision stepless adjustment.

[0063] In some embodiments, see Figure 5 and Figure 6 As shown, the first adjusting member 151 has an aperture stop 1511 at the end facing the front lens 11; the lens barrel assembly 15 also includes a second adjusting member 152, part of which is connected to the eyepiece lens 12, and part of which is axially movably connected to the end of the first adjusting member 151 away from the front lens 11.

[0064] It should be noted that an aperture stop 1511 refers to an entity in an optical system that limits the beam of light. It can be the edge of a lens, a frame, or a specially designed perforated screen. Its function can be twofold: limiting the beam of light or limiting the size of the field of view (imaging range). The aperture stop 1511 that limits the beam of light the most in an optical system is called the aperture stop 1511, and the aperture stop 1511 that limits the field of view (size) the most is called the field stop 1511.

[0065] Furthermore, since a portion of the second adjusting member 152 is axially movably connected to the end of the first adjusting member 151 away from the front lens 11, the second adjusting member 152 can move axially relative to the first adjusting member 151. At the same time, since a portion of the second adjusting member 152 is connected to the eyepiece lens 12, the second adjusting member 152 can drive the eyepiece lens 12 to move axially relative to the first adjusting member 151.

[0066] It should be noted that the focal length of the eyepiece 12 has a manufacturing deviation, which will cause the aperture stop 1511 to be blurry. Understandably, since the aperture stop 1511 is set at the end of the first adjusting member 151 facing the front lens 11, the second adjusting member 152 can drive the eyepiece 12 to move relative to the aperture stop 1511. This allows for adjustment of the distance between the eyepiece 12 and the aperture stop 1511, enabling precise matching between the eyepiece 12 and the aperture stop 1511. This improves the imaging effect of the eyepiece 12 and reduces the inconsistency problem in the manufacturing of the eyepiece 12.

[0067] In some embodiments, see Figure 5 and Figure 6 As shown, along the axial direction, the orthographic projection of the end of the first adjusting member 151 facing the aperture 1511 is located within the orthographic projection of the end of the first adjusting member 151 away from the aperture 1511.

[0068] Thus, since the orthographic projection of the end of the first adjustment member 151 facing the aperture 1511 is located within the orthographic projection of the end of the first adjustment member 151 away from the aperture 1511 along the axial direction, that is, the end of the first adjustment member 151 facing the aperture 1511 forms an inclined surface, so that when light enters the first adjustment member 151, it will be reflected by the inclined surface to a position that does not affect the imaging effect, thereby reducing the influence of the reflection of the aperture 1511 on the imaging, and thus improving the imaging effect of the endoscope eyepiece end structure 1.

[0069] In some embodiments, see Figure 7 As shown, the second adjusting member 152 and the eyepiece 12 are bonded together.

[0070] In this way, on the one hand, the stability and reliability of the connection between the second adjusting member 152 and the eyepiece 12 can be improved; on the other hand, since the second adjusting member 152 and the eyepiece 12 are made of two different materials, the damage to the eyepiece 12 during the connection process can be reduced by bonding, thereby ensuring the normal imaging of the eyepiece 12.

[0071] In some embodiments, in a fixed state, the snap-fit ​​member 142 abuts against one of the lens body 131 and the adjustment seat 141, and the snap-fit ​​member 142 is bonded to the other of the lens body 131 and the adjustment seat 141.

[0072] Thus, in a fixed state, the eyepiece structure 1 is bonded to either the endoscope body 131 or the adjustment seat 141 via the snap-fit ​​142, thereby further improving the tightness of the connection between the snap-fit ​​142 and the endoscope body 131 or the adjustment seat 141, thereby further improving the reliability of the connection between the endoscope body 131 and the adjustment seat 141, thereby preventing the various components of the endoscope eyepiece structure 1 from detaching during use, and thus improving the safety of the endoscope eyepiece structure 1 in use.

[0073] The first adjusting component 151 and the aperture 1511 are integrally molded structures.

[0074] In this way, on the one hand, the processing difficulty of the first adjusting component 151 and the aperture 1511 can be reduced, which can facilitate the production and processing by the processing personnel; on the other hand, the stability of the first adjusting component 151 and the aperture 1511 after connection can be improved, thereby further improving the safety and reliability of the endoscope eyepiece end structure 1. In addition, there is no need to set up additional space for the aperture 1511 separately, and the aperture 1511 only needs to be set as part of the structure of the first adjusting component 151, thereby reducing the space occupied by the aperture 1511.

[0075] In some embodiments, see Figure 8 As shown, the surface of the adjusting seat 141 is provided with a groove 1411. In the fixed state, the snap-fit ​​member 142 passes through the mirror body 131, is embedded in the groove 1411, and abuts against the bottom wall of the groove 1411.

[0076] Thus, in the fixed state, the snap-fit ​​142 passes through the mirror body 131, is embedded in the groove 1411, and abuts against the bottom wall of the groove 1411. Therefore, the groove 1411 can restrict the snap-fit ​​142 in the axial direction, and further restrict the movement of the adjusting seat 141 relative to the mirror body 131 in the axial direction. This further ensures the tightness of the connection between the adjusting seat 141 and the mirror body 131 in the fixed state.

[0077] Optionally, the snap-fit ​​142 has a chamfer on the side facing the groove 1411, and the groove 1411 has an inclined protrusion on the side facing the snap-fit ​​142.

[0078] In this way, the chamfer of the snap-fit ​​142 can be snapped into the inclined protrusion of the groove 1411, thereby forming a pre-tightening force between the snap-fit ​​142 and the groove 1411 in the fixed state, thus ensuring that the adjusting seat 141 is not easy to loosen.

[0079] In some embodiments, see Figure 2 As shown, there are multiple snap-fit ​​pieces 142. In the fixed state, the multiple snap-fit ​​pieces 142 are arranged at intervals along the circumference of the lens body 131.

[0080] Thus, since there are multiple snap-fit ​​pieces 142, in a fixed state, the radial position of the adjusting seat 141 relative to the lens body 131 can be further controlled by the abutting action of multiple snap-fit ​​pieces 142 and the adjusting piece at different positions, thereby improving the accuracy of radial adjustment of the eyepiece lens 12 relative to the front lens 11.

[0081] In some embodiments, see Figure 2 , Figure 4 and Figure 5 As shown, the lens barrel assembly 15 also includes a limiting member 153. The limiting member 153 is sleeved on the outside of the first adjusting member 151 and is axially connected to the first adjusting member 151. The limiting member 153 is located on the side of the adjusting seat 141 away from the front lens 11. In the fixed state, the limiting member 153 abuts against the adjusting seat 141.

[0082] Thus, since the limiting member 153 abuts against the adjusting seat 141 in the fixed state, the limiting member 153 can apply an axial force to the adjusting seat 141, thereby preventing the adjusting seat 141 from moving relative to the first adjusting member 151 in the direction from the front end lens 11 toward the eyepiece lens 12. At the same time, it can prevent the first adjusting member 151 from moving relative to the adjusting seat 141 in the direction from the eyepiece lens 12 toward the front end lens 11. This prevents radial displacement of components such as the adjusting seat 141, the first adjusting member 151, and the eyepiece lens 12, thereby improving the overall connection stability and reliability of the endoscope eyepiece end structure 1.

[0083] In some embodiments, see Figure 9 As shown, the endoscope 131 includes an endoscope body 1311, an endoscope tube 1312, and a connector 1313. The endoscope tube 1312 and the connector 1313 are respectively located at opposite ends of the endoscope body 1311. The end of the endoscope tube 1312 away from the endoscope body 1311 is used for insertion into the treatment site. The end of the connector 1313 away from the endoscope body 1311 forms a first mating part or a second mating part. The front lens 11 is located inside the connector 1313.

[0084] In this way, the end of the endoscope tube 1312 away from the endoscope body 1311 can be inserted into the treatment site, and the adjustment seat 141 can be connected through the connector 1313, so that different parts of the endoscope body 131 can perform different functions, thereby facilitating the use of the endoscope eyepiece end structure 1.

[0085] In some embodiments, see Figure 2 As shown, the lens barrel assembly 15 also includes a lens mount 154. The lens mount 154 is connected to the end of the second adjusting member 152 away from the first adjusting member 151.

[0086] In this way, on the one hand, the eyepiece 12 can be protected by the lens mount 154, thereby preventing the eyepiece 12 from being damaged by the external environment; on the other hand, it allows the observer to observe through one side of the lens mount 154, thus facilitating the operator's operation.

[0087] During the assembly process of the endoscope eyepiece end structure 1 of this application, the eyepiece 12 is pre-connected to the second adjustment member 152, and then the second adjustment member 152 is connected to the first adjustment member 151. Since the second adjustment member 152 and the first adjustment member 151 are movably connected, and the first adjustment member 151 is provided with an aperture 1511 on the side away from the eyepiece 12, the position of the eyepiece 12 relative to the aperture 1511 can be adjusted through the movable connection between the second adjustment member 152 and the first adjustment member 151. Furthermore, the limiting member 153 is movably connected to the first adjusting member 151, so that the first adjusting member 151, the second adjusting member 152, the eyepiece 12 and the limiting member 153 constitute the endoscope tube assembly 15. By movably connecting the first adjusting member 151 to the adjusting seat 141, the adjusting seat 141 is placed inside the endoscope body 131. After the position of the adjusting seat 141 relative to the endoscope body 131 is adjusted to a suitable position, the eyepiece 12 is coaxial with the front lens 11 and the eyepiece 12 does not tilt relative to the front lens 11. Finally, the eyepiece end structure 1 of the endoscope is installed as a whole by the snap-fit ​​member 142 abutting against the adjusting seat 141. Before the snap-fit ​​142 abuts against the adjusting seat 141, a limiting member 153 is preset on the first adjusting member 151. Thus, the limiting member 153 and the adjusting seat 141 can abut against each other through the relative movement between the limiting member 153 and the first adjusting member 151, thereby further improving the overall tightness of the connection of the endoscope eyepiece end structure 1.

[0088] Of course, it is understandable that during the installation process of the endoscope eyepiece end structure 1 of this application, the endoscope body 131, the adjustment seat 141 and the snap-fit ​​part 142 can also be pre-installed, and then the endoscope tube assembly 15 can be installed. This application can install the endoscope eyepiece end structure 1 according to the actual use requirements. Here, the installation method of the endoscope eyepiece end structure 1 will not be described in detail.

[0089] 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.

[0090] The above embodiments merely illustrate 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 eyepiece end structure comprising, in order in the direction of incident light, a front end lens and an eyepiece lens, characterized by, The endoscope eyepiece end structure further comprises: a mirror body assembly comprising a mirror body, the front end lens being arranged in the mirror body; an adjusting assembly comprising an adjusting seat, the adjusting seat being arranged at one end of the mirror body, the eyepiece lens being arranged in the adjusting seat; the adjusting assembly comprises a fixed state and a movable state; in the fixed state, the adjusting seat is fixedly connected to the mirror body; in the movable state, the adjusting seat is used to adjust the relative position between the adjusting seat and the mirror body, so as to adjust the axial position between the eyepiece lens and the front end lens.

2. The endoscope eyepiece end structure according to claim 1, characterized by, The adjusting assembly further comprises a clamping piece; one of the mirror body and the adjusting seat comprises a first matching part, and the other comprises a second matching part, the first matching part being sleeved outside the second matching part; in the fixed state, the clamping piece is arranged through the first matching part and abuts against the second matching part; in the movable state, the clamping piece is separated from the second matching part.

3. The endoscope eyepiece end structure according to claim 2, characterized by, The endoscope eyepiece end structure further comprises: a lens barrel assembly comprising a first adjusting piece; the first adjusting piece is arranged in the adjusting seat, and the first adjusting piece and the adjusting seat are movably connected along the axial direction; the eyepiece lens is arranged in the first adjusting piece and connected with the first adjusting piece.

4. The endoscope eyepiece end structure according to claim 3, characterized by, an end of the first adjusting piece towards the front end lens is provided with a diaphragm; the lens barrel assembly further comprises a second adjusting piece, part of the second adjusting piece being connected with the eyepiece lens, and part of the second adjusting piece being movably connected with the first adjusting piece away from the front end lens along the axial direction.

5. The endoscope eyepiece end structure according to claim 4, characterized by, along the axial direction, the orthographic projection of an end of the first adjusting piece towards the diaphragm is located in the orthographic projection of an end of the first adjusting piece away from the diaphragm.

6. The endoscope eyepiece end structure according to claim 4, characterized by, the second adjusting piece and the eyepiece lens are adhesively connected; and / or in the fixed state, the clamping piece abuts against one of the mirror body and the adjusting seat, and the clamping piece is adhesively connected to the other of the mirror body and the adjusting seat; and / or the first adjusting piece and the adjusting seat are threadedly connected; and / or the first adjusting piece and the diaphragm are integrally formed.

7. The endoscope eyepiece structure of any of claims 2-6, wherein, a surface of the adjusting seat is provided with a groove, in the fixed state, the clamping piece is arranged through the mirror body and embedded in the groove, and abuts against the groove bottom wall.

8. The endoscope eyepiece structure of any of claims 2-6, wherein, the clamping piece is a plurality of, in the fixed state, the plurality of clamping pieces are arranged at intervals along the circumferential direction of the mirror body.

9. The endoscope eyepiece structure of any of claims 3-6, wherein, The lens barrel assembly further comprises: a limiting piece, which is sleeved outside the first adjusting piece and movably connected with the first adjusting piece along the axial direction, the limiting piece being located on a side of the adjusting seat away from the front end lens; in the fixed state, the limiting piece abuts against the adjusting seat.

10. The endoscope eyepiece end structure of any of claims 2-6, wherein, the mirror body comprises a mirror body body, a mirror tube and a connecting piece, the mirror tube and the connecting piece being arranged at opposite ends of the mirror body body respectively, an end of the mirror tube away from the mirror body body being used to be inserted into a treatment site; an end of the connecting piece away from the mirror body body forms the first matching part or the second matching part; the front end lens is arranged in the connecting piece.

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