Endoscope and front end housing and insertion part thereof

Abstract

The present application belongs to the technical field of medical instruments, and particularly relates to an endoscope and a front end housing and an insertion part thereof. The front end housing is internally provided with an accommodation cavity for accommodating a camera module; a supporting structure extends from an inner wall of the front end housing; the accommodation cavity and the supporting structure are oppositely arranged; a portion, facing the accommodation cavity, of a side wall of the supporting structure is recessed to define a first positioning groove; the accommodation cavity is in communication with the first positioning groove; and the supporting structure positions and supports the camera module by means of the first positioning groove. In the embodiments of the present application, the first positioning groove can be used to allow one part of the camera module to extend into the interior of the supporting structure, so that the longitudinal height, occupied by the camera module and the supporting structure, of the front end housing is less than the sum of the heights of the two, thereby improving the space utilization rate of the front end housing and further increasing the layout space of the camera module. Moreover, under the condition that an instrument tube is arranged below the supporting structure, allowing one part of the camera module to extend into the interior of the supporting structure can also increase the layout space of the instrument tube, thereby increasing the space utilization rate of the front end housing.

Description

Endoscope and its front end shell and insertion part Technical Field

[0001] The present application belongs to the technical field of medical devices, and specifically relates to an endoscope and its front end shell and insertion part. Background Art

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

[0003] In the related art, the insertion portion includes a front housing, an instrument tube, and a camera module. A portion of the instrument tube and the camera module are spaced apart within the front housing. The front housing also includes an annular positioning wall for positioning the instrument tube to prevent radial movement. Arc-shaped limiting walls extend along either side of the positioning wall, forming a space between the two limiting walls for positioning the camera module to prevent radial movement. However, the space utilization rate within the front housing in the related art is low, and there is little space for arranging components such as the camera module and the instrument tube. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide an endoscope and its front end shell and insertion part, which can solve the problem of low space utilization in the current front end shell.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In the first aspect, an embodiment of the present application provides a front end shell of an endoscope, wherein the front end shell has a accommodating cavity for accommodating a camera module, a supporting structure extends from the inner wall of the front end shell, the accommodating cavity and the supporting structure are arranged relative to each other, and the side wall of the supporting structure is partially recessed toward the accommodating cavity to define a first positioning groove, the accommodating cavity is connected to the first positioning groove, and the supporting structure positions and supports the camera module through the first positioning groove.

[0007] In a second aspect, an embodiment of the present application provides an insertion portion of an endoscope, comprising a camera module, an instrument tube and the above-mentioned front end shell, wherein the camera module is carried in a first positioning groove, and a portion of the camera module is located in the first positioning groove.

[0008] In a third aspect, an embodiment of the present application provides an endoscope comprising the above-mentioned insertion portion.

[0009] In the embodiment of the present application, the side wall of the support structure is partially recessed toward the accommodating cavity to define a first positioning groove. The first positioning groove is communicated with the accommodating cavity and can position the camera module. When the camera module is arranged in the first positioning groove, a portion of the camera module is located in the first positioning groove. That is, the first positioning groove of the embodiment of the present application extends into the interior of the support structure. In this way, the first positioning groove can be used to allow a portion of the camera module to extend into the interior of the support structure. Compared with the related art that uses the space above the support structure to completely accommodate the camera module, this embodiment can make the total height of the front end shell occupied by the camera module and the support structure in the longitudinal direction less than the sum of the heights of the two, thereby improving the space utilization rate of the front end shell and thereby increasing the layout space of the camera module.

[0010] Furthermore, when the instrument tube is arranged below the support structure and the size of the camera module is certain, a part of the camera module extends into the interior of the support structure to reduce the total longitudinal height of the front end shell occupied by the camera module and the support structure. After the total height is reduced, the support structure can be moved upward to increase the layout space of the instrument tube.

[0011] In addition, the embodiment of the present application sets a first positioning groove on the support structure to achieve positioning of the camera module without setting positioning walls on both sides of the support structure. This can increase the layout space on both sides of the support structure, thereby increasing the space utilization of the front end shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figures 1 and 2 are schematic structural diagrams of the front end housing disclosed in the embodiment of the present application at different viewing angles;

[0013] FIG3 is a schematic diagram of a partial structure of an insertion portion disclosed in an embodiment of the present application;

[0014] FIG4 is a cross-sectional view of a partial structure of the insertion portion disclosed in an embodiment of the present application.

[0015] Description of reference numerals:

[0016] 100, front end shell; 110, stop protrusion; 111, second positioning groove; 120, second flange portion; 200, support structure; 201, accommodating space; 210, first positioning groove; 211, first groove section; 212, second groove section; 220, main body; 230, first flange portion; 300, support portion; 400, positioning protrusion; 401, clamping space; 410, extension protrusion; 510, instrument tube; 520, camera module; 600, circuit structure; 610, light source mounting portion; 611, avoidance hole. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0018] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0019] The endoscope, its front end shell, and insertion portion provided in the embodiments of the present application are described in detail below with reference to specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0020] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its components relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0021] In the related art, limiting walls extending along the arc direction are provided on both sides of the positioning wall. The positioning wall and the two limiting walls form a positioning space. The camera module is placed on the positioning wall, and the two sides of the camera module are respectively in contact with the limiting walls on both sides to prevent the camera module from moving radially.

[0022] The inventors have found that the camera module and the positioning wall are arranged in the longitudinal direction, and the camera module and the positioning wall occupy a longitudinal height in the front end shell that is the sum of their heights. Therefore, the longitudinal space utilization rate of the camera module and the positioning wall is not high, and the layout space of the camera module is relatively small; and the camera module is positioned by the limiting walls on both sides, and the limiting walls will occupy a larger layout space on both sides of the positioning wall, which will also reduce the space utilization rate of the front end shell and reduce the layout space of components such as the camera module and the instrument tube.

[0023] As shown in Figures 1 and 2, an embodiment of the present application discloses a front end shell of an endoscope, wherein the front end shell 100 has a housing for accommodating a camera module 520. A support structure 200 extends from the inner wall of the front end shell 100, and the housing cavity and the support structure 200 are spaced apart and opposite to each other. Specifically, the support structure 200 can be provided at the distal end of the front end shell 100 and can extend along the axial direction of the front end shell 100, thereby improving the support stability of the support structure 200 for the camera module; the housing cavity and the support structure 200 can be opposite to each other in the longitudinal direction or in an oblique direction, where the oblique direction intersects with the longitudinal direction, that is, the housing cavity and the support structure 200 can be arranged in sequence in the longitudinal direction or in an oblique direction.

[0024] The sidewall of the support structure 200 is recessed toward the accommodating cavity to define a first positioning groove 210. The accommodating cavity is connected to the first positioning groove 210. The support structure 200 positions and supports the camera module 520 via the first positioning groove 210. Specifically, the first positioning groove 210 of this embodiment is formed in the sidewall of the support structure 200 by removing material. In other words, the first positioning groove 210 extends into the interior of the support structure 200.

[0025] In the embodiment of the present application, the side wall of the support structure 200 is partially recessed toward the accommodating cavity to define a first positioning groove 210. The first positioning groove 210 is communicated with the accommodating cavity and can position the camera module 520. When the camera module 520 is arranged in the first positioning groove 210, a portion of the camera module 520 is located in the first positioning groove 210. That is to say, the first positioning groove 210 of the embodiment of the present application extends into the interior of the support structure 200. In this way, the first positioning groove 210 can be used to allow a portion of the camera module 520 to extend into the interior of the support structure 200. Compared with the related art that uses the space above the support structure 200 to completely accommodate the camera module 520, the total height of the camera module 520 and the support structure 200 in the longitudinal direction of the front end shell 100 in this embodiment can be made less than the sum of the heights of the two, so as to improve the space utilization rate of the front end shell 100 and thereby increase the layout space of the camera module 520.

[0026] Furthermore, when the instrument tube 510 is arranged below the support structure 200 and the size of the camera module 520 is certain, a portion of the camera module 520 extends into the interior of the support structure 200 to reduce the total longitudinal height of the front end shell 100 occupied by the camera module 520 and the support structure 200. After the total height is reduced, the support structure 200 can be moved upward to increase the layout space of the instrument tube 510.

[0027] In addition, the embodiment of the present application sets a first positioning groove 210 on the support structure 200 to realize the positioning of the camera module 520, without setting positioning walls on both sides of the support structure 200. This can increase the layout space on both sides of the support structure 200, thereby increasing the space utilization of the front end shell 100.

[0028] In an optional embodiment, the support structure 200 extends along the circumference of the front end shell 100 to form a receiving space 201 within the support structure 200 for accommodating the instrument tube 510. The inner wall of the receiving space 201 can be aligned with the outer wall of the instrument tube 510. Optionally, the support structure 200 can be a monolithic structure, which can be annular or arc-shaped. Alternatively, when the first positioning groove 210 penetrates the support structure 200, the support structure 200 can also include two support arms, both of which are split structures. Both support arms can extend in an arc-shaped direction, and the ends of the two support arms away from the front end shell 100 are spaced apart to form the above-mentioned first positioning groove 210. Of course, in addition to this embodiment, the support structure 200 can also be flat.

[0029] In this embodiment, a accommodating space 201 is formed in the support structure 200, and the accommodating space 201 can be fitted with the outer wall of the instrument tube 510 to limit the instrument tube 510 in the radial direction and prevent the instrument tube 510 from moving in the radial direction; it can be seen that in this embodiment, the support structure 200 itself is used to form the accommodating space 201 for limiting the instrument tube 510, that is, the support structure 200 can not only accommodate a part of the camera module 520 and position the camera module 520, but also limit the instrument tube 510, thereby achieving the purpose of multiple uses.

[0030] In a further embodiment, at least a portion of the first positioning groove 210 extends through the support structure 200 and communicates with the accommodating space 201. The first positioning groove 210 is configured to accommodate a portion of the instrument tube 510. In this embodiment, the first positioning groove 210 extends through the support structure 200. This increases the depth of the first positioning groove 210, thereby allowing a larger portion of the camera module 520 to extend into the interior of the support structure 200, thereby further reducing the longitudinal height of the front end housing 100 occupied by the camera module 520 and the support structure 200. Of course, the first positioning groove 210 may also be a blind groove, and this application is not limited thereto.

[0031] Generally speaking, after the camera module 520 is positioned in the first positioning groove 210, glue will be injected into the front end shell 100 to fix the camera module 520. During the glue injection process, the glue will gradually fill the space inside the front end shell 100 and squeeze the camera module 520. For example, when there is glue above the camera module 520, the glue will apply a downward squeezing force to the camera module 520, which may cause damage to the camera module 520.

[0032] In an optional embodiment, the wall thickness of the portion of the support structure 200 near the first positioning groove 210 is smaller than the wall thickness of the portion of the support structure 200 away from the first positioning groove 210. In this embodiment, the wall thickness of the portion of the support structure 200 near the first positioning groove 210 is smaller than the wall thickness of the portion of the support structure 200 away from the first positioning groove 210. This allows the portion of the support structure 200 near the first positioning groove 210 to have a smaller rigidity, while the portion of the support structure 200 near the front end housing 100 to have a larger rigidity. This not only increases the connection strength between the support structure 200 and the front end housing 100, but also allows the portion of the support structure 200 near the first positioning groove 210 to be easily deformed. When the glue above the camera module 520 applies a large extrusion force to the camera module 520, the portion of the support structure 200 near the first positioning groove 210 is easily deformed, that is, deformed in a direction away from the camera module 520, thereby releasing the extrusion force on the camera module 520 and preventing damage to the camera module 520. Of course, the wall thickness of the portion of the support structure 200 close to the first positioning groove 210 may also be greater than or equal to the wall thickness of the portion of the support structure 200 away from the first positioning groove 210 , and this application does not limit this.

[0033] And / or, in an optional embodiment, the wall thickness of the support structure 200 gradually decreases in the direction extending from the part of the support structure 200 away from the first positioning groove 210 to the part close to the first positioning groove 210, that is, the wall thickness of the part of the support structure 200 close to the first positioning groove 210 is smaller than the wall thickness of the part of the support structure 200 away from the first positioning groove 210, thereby preventing damage to the camera module 520; and the gradual decrease in the wall thickness of the support structure 200 of this embodiment can gradually reduce the stiffness of the support structure 200, that is, the stiffness of the support structure 200 will not change suddenly, thereby preventing damage to the support structure 200.

[0034] In an optional embodiment, a glue channel is provided in the first positioning groove 210 , and when a portion of the instrument tube 510 and a portion of the camera module 520 are both located in the first positioning groove 210 , the glue channel is located between the instrument tube 510 and the camera module 520 . In this embodiment, a glue channel is provided in the first positioning groove 210. When glue is injected into the front end shell 100, the glue will enter the glue channel. Since a portion of the instrument tube 510 and a portion of the camera module 520 are both located in the first positioning groove 210, the glue channel is located between the instrument tube 510 and the camera module 520. Therefore, the glue entering the glue channel will be connected to the instrument tube 510 and the camera module 520, thereby indirectly connecting the front end shell 100 to the instrument tube 510 and the camera module 520, so as to increase the connection area between the front end shell 100 and the instrument tube 510 and the camera module 520 respectively, thereby increasing the connection strength between the front end shell 100 and the instrument tube 510 and the camera module 520 respectively.

[0035] It should be noted that, when a portion of the instrument tube 510 and a portion of the camera module 520 are both located in the first positioning groove 210, the instrument tube 510 and the camera module 520 may be in contact with each other, and at this time the glue channel is formed between the outer surfaces of the instrument tube 510 and the camera module 520 that are not in contact; or, when a portion of the instrument tube 510 and a portion of the camera module 520 are both located in the first positioning groove 210, there is a gap between the instrument tube 510 and the camera module 520, and at this time the glue channel includes the gap, which can increase the volume of the glue channel, thereby further increasing the connection area between the front end shell 100 and the instrument tube 510 and the camera module 520 respectively.

[0036] In an optional embodiment, the support structure 200 includes a main body 220 and a first flange 230. The first flange 230 is disposed at the distal end of the main body 220 and is bent relative to the main body 220. Both the main body 220 and the first flange 230 extend circumferentially of the front end housing 100. The accommodating space 201 is located within the main body 220. The first flange 230 faces the accommodating space 201, that is, the first flange 230 is bent toward the central axis of the main body 220. In this embodiment, the support structure 200 includes the relatively bent main body 220 and the first flange 230. The provision of the first flange 230 can enhance the structural strength of the support structure 200. Furthermore, the first flange 230 faces the accommodating space 201. Therefore, when a portion of the instrument tube 510 is located within the accommodating space 201, the first flange 230 can axially stop the instrument tube 510, preventing the distal end of the instrument tube 510 from protruding out of the accommodating space 201. Furthermore, a second flange portion 120 may be provided at the distal end of the front end shell 100 , and the second flange portion 120 is bent toward a direction close to the central axis of the front end shell 100 to enhance the structural strength of the front end shell 100 .

[0037] There is glue above the camera module 520, and when the glue squeezes the camera module 520 and causes the portion of the support structure 200 close to the first positioning groove 210 to deform downward, if the squeezing force of the glue on the camera module 520 is too great, the downward deformation of the support structure 200 will be too great, which may cause the support structure 200 to squeeze the instrument tube 510 located in the accommodating space 201, thereby deforming the instrument tube 510, which will reduce the suction flow of the instrument tube 510 and reduce the external dimensions of the medical device that can be placed in the instrument tube 510.

[0038] In an optional embodiment, the first positioning groove 210 includes a first groove section 211 and a second groove section 212. The first groove section 211 is provided in the main body 220, and the second groove section 212 is provided in the first flange portion 230. The first groove section 211 passes through the main body 220. Specifically, the first groove section 211 and the second groove section 212 are connected. The first groove section 211 passes through the main body 220, and the second groove section 212 does not pass through the first flange portion 230. In other words, only a portion of the first positioning groove 210 of this embodiment passes through the support structure 200, while the other portion does not pass through the support structure 200.

[0039] When the camera module 520 is carried in the first positioning groove 210 and a portion of the instrument tube 510 is located in the accommodating space 201, the bottom wall of the second groove section 212 is located between the camera module 520 and the instrument tube 510, and there is a gap between the camera module 520 and the instrument tube 510. In this embodiment, when the camera module 520 is carried in the first positioning groove 210 and a portion of the instrument tube 510 is located in the accommodating space 201, a gap can be provided between the top of the instrument tube 510 and the support structure 200. The gap can provide a deformable avoidance space for the support structure 200 to prevent the support structure 200 from squeezing the instrument tube 510. Moreover, since the bottom wall of the second groove section 212 is located between the camera module 520 and the instrument tube 510 and there is a gap between the camera module 520, the gap can provide a space for the camera module 520 to move toward the instrument tube 510. The downward movement provides an avoidance space, thereby releasing the extrusion force on the camera module 520; the first flange portion 230 can also limit the camera module 520 in the vertical upward direction through the bottom wall of the second groove section 212, and because the second groove section 212 does not pass through the first flange portion 230, the first flange portion 230 has a larger rigidity, thereby stably limiting the camera module 520, preventing the camera module 520 from moving downward too far, and further preventing the camera module 520 from deforming downward too much, so as to prevent the instrument tube 510 from deforming.

[0040] In an optional embodiment, the inner wall of the front end shell 100 further extends with a support portion 300 for supporting the circuit structure 600, and the support portion 300 extends to the support structure 200. Specifically, the circuit structure 600 can be a flexible circuit board or a printed circuit board, which can provide a mounting base for the camera module 520 and can power it. In this embodiment, the inner wall of the front end shell 100 extends with a support portion 300, which can provide stable support for the circuit structure 600, and the support portion 300 extends to the support structure 200. In other words, the support portion 300 is connected to the support structure 200, which can improve the structural strength of the support structure 200 and the front end shell 100.

[0041] Furthermore, if the front housing 100 does not extend beyond the support portion 300, when glue is injected into the front housing 100, the circuit structure 600 can be indirectly connected to the front housing 100 through the glue. However, the distance between the circuit structure 600 and the front housing 100 is large, and voids may form after the glue solidifies between the circuit structure 600 and the front housing 100, which reduces the connection strength between the circuit structure 600 and the front housing 100. In contrast, in this embodiment, the inner wall of the front housing 100 extends beyond the support portion 300, and the circuit structure 600 is supported on the support portion 300. When glue is injected into the front housing 100, the glue covers the support portion 300 and connects to the circuit structure 600. Since the support portion 300 is part of the front housing 100, this embodiment can reduce the distance between the circuit structure 600 and the front housing 100, thereby reducing the risk of voids forming after the glue solidifies between the circuit structure 600 and the front housing 100, thereby increasing the connection strength between the circuit structure 600 and the front housing 100.

[0042] In an optional embodiment, the front housing 100 is provided with a second positioning groove 111, which is opposite to the first positioning groove 210. The first positioning groove 210 and the second positioning groove 111 are used to position and clamp the camera module 520. In this embodiment, the first positioning groove 210 and the second positioning groove 111 jointly clamp the camera module 520, which can improve the assembly stability and positioning accuracy of the camera module 520 and prevent the camera module 520 from deflecting during the glue injection process.

[0043] In a further embodiment, a stopper protrusion 110 is provided on the front end housing 100, and a second positioning groove 111 is provided on the stopper protrusion 110. The stopper protrusion 110 is used to limit the circuit structure 600 of the endoscope in a first direction. In other words, the circuit structure 600 and the stopper protrusion 110 are arranged sequentially in the first direction, wherein the first direction is a direction extending from the proximal end to the distal end of the front end housing 100. In this embodiment, the second positioning groove 111 is provided on the stopper protrusion 110 on the front end housing 100. The stopper protrusion 110 can stop and limit the circuit structure 600 in the first direction, thereby preventing the circuit structure 600 from escaping from the distal end of the front end housing 100.

[0044] In an optional embodiment, the front end shell 100 can be mounted on the outside of the active bending section, and the inner circumferential surface of the front end shell 100 is also provided with a positioning protrusion 400, which can be positioned and matched with the positioning recess for the active bending section, so that the front end shell 100 and the active bending section are respectively positioned and matched in the circumferential direction and the second direction of the front end shell 100, wherein the second direction is opposite to the first direction. In the embodiment of the present application, a positioning protrusion 400 is provided on the inner circumferential surface of the front end shell 100. When the front end shell 100 is sleeved on the outside of the active bending section, the positioning protrusion 400 is positioned and matched with the positioning recess of the active bending section, so that the front end shell 100 and the active bending section are positioned and matched at the circumferential upper limit of the front end shell 100, thereby preventing the active bending section from rotating and making the active bending section located in a preset installation position; and the positioning protrusion 400 and the positioning recess are positioned and matched, and the front end shell 100 and the active bending section are positioned and matched at the upper limit in the first direction. In this way, when the front end shell 100 and the active bending section are assembled, the front end shell 100 can be prevented from moving a large stroke relative to the active bending section, causing the components in the front end shell 100 to hit the distal end of the active bending section, thereby avoiding damage to the components in the front end shell 100.

[0045] In addition, since the front end shell 100 is sleeved on the outside of the active bending section, the inner hole size of the front end shell 100 is larger than the outer size of the active bending section, thereby increasing the volume of the accommodating space inside the front end shell 100, which is beneficial to the layout of the components inside the front end shell 100; and the positioning protrusion 400 of the embodiment of the present application is arranged on the inner circumference of the front end shell 100, so when the positioning protrusion 400 is positioned and matched with the positioning recess, the matching position of the positioning protrusion 400 and the positioning recess is also located inside the front end shell 100, so the skin of the active bending section will not cover the matching position of the positioning protrusion 400 and the positioning recess, thereby avoiding the positioning protrusion 400 and the positioning recess from clamping the skin, thereby avoiding damage to the skin.

[0046] To prevent the positioning recess from disengaging from the positioning protrusion 400 when the active bending section deforms inward, in an optional embodiment, an extension protrusion 410 is provided on the positioning protrusion 400. A clamping space 401 is formed between the extension protrusion 410 and the inner circumference of the front end shell 100. The clamping space 401 is used to clamp the peripheral wall of the active bending section. In this embodiment, the clamping space 401 is formed between the extension protrusion 410 and the inner circumference of the front end shell 100. When the front end shell 100 is placed on the outside of the active bending section, the peripheral wall of the active bending section is inserted into the clamping space 401. In this way, the extension protrusion 410 and the inner circumference of the front end shell 100 can jointly clamp the active bending section. In other words, the extension protrusion 410 can limit the active bending section to prevent the positioning recess from moving away from the inner circumference of the front end shell 100, thereby hindering the active bending section from deforming inward, and thus preventing the positioning recess from disengaging from the positioning protrusion 400.

[0047] As shown in FIG3 and FIG4 , an embodiment of the present application further discloses an insertion portion of an endoscope, comprising a camera module 520, an instrument tube 510, and the front end housing 100 described in any of the above embodiments. The camera module 520 is supported in the first positioning groove 210, and a portion of the camera module 520 is located in the first positioning groove 210. In the embodiment of the present application, the first positioning groove 210 can be utilized to allow a portion of the camera module 520 to extend into the interior of the support structure 200. In this way, the height occupied by the camera module 520 and the support structure 200 in the longitudinal direction of the front end housing 100 can be less than the sum of the heights of the camera module 520 and the support structure 200, thereby improving the space utilization of the front end housing 100 and increasing the layout space of the camera module 520. Moreover, when the instrument tube 510 is disposed below the support structure 200, the portion of the camera module 520 extending into the interior of the support structure 200 can further increase the layout space of the instrument tube 510.

[0048] In an optional embodiment, the insertion portion further includes a circuit structure 600, which includes a light source mounting portion 610. The light source mounting portion 610 is located at the distal end of the circuit structure 600. A relief hole 611 is provided on the light source mounting portion 610. A portion of the camera module 520 is located within the relief hole 611. The relief hole 611 extends toward the edge of the light source mounting portion 610 in a direction close to the support structure 200, and a portion of the support structure 200 is located within the relief hole 611. In this embodiment, the support structure 200 is located within the relief hole 611, so that the support structure 200 can stop and limit the light source mounting portion 610 in the lateral direction toward one end of the support structure 200 to prevent the light source mounting portion 610 from being deformed and damaged during the glue injection process.

[0049] The present application also discloses an endoscope including the above-mentioned insertion portion. The endoscope referred to in the present application can be a bronchoscope, pyeloscope, esophagoscope, gastroscope, enteroscope, otoscope, rhinoscope, oral scope, laryngoscope, colposcope, laparoscope, arthroscope, etc. The present application does not impose any specific restrictions on the type of endoscope.

[0050] The above embodiments of the present application focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here. The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of this application and the claims, all of which are within the protection of this application.

Claims

1. A front end housing of an endoscope, characterized in that: The front end shell (100) has a receiving cavity for accommodating the camera module (520), and a support structure (200) extends from the inner wall of the front end shell (100). The receiving cavity and the support structure (200) are spaced apart and opposite to each other. The side wall of the support structure (200) is partially recessed toward the receiving cavity to define a first positioning groove (210). The receiving cavity is connected to the first positioning groove (210), and the support structure (200) positions and supports the camera module (520) through the first positioning groove (210).

2. The front end housing according to claim 1, characterized in that The support structure (200) extends along the circumference of the front end shell (100) to form an accommodating space (201) for accommodating the instrument tube (510) within the support structure (200), and the inner wall of the accommodating space (201) can fit with the outer wall of the instrument tube (510); At least a portion of the first positioning groove (210) passes through the support structure (200) and is connected to the accommodating space (201), and the first positioning groove (210) is used to accommodate a portion of the instrument tube (510).

3. The front end housing according to claim 2, characterized in that: The wall thickness of a portion of the support structure (200) close to the first positioning groove (210) is smaller than the wall thickness of a portion of the support structure (200) away from the first positioning groove (210); and / or, In a direction extending from a portion of the support structure (200) away from the first positioning groove (210) to a portion close to the first positioning groove (210), the wall thickness of the support structure (200) gradually decreases.

4. The front end housing according to claim 2, characterized in that A glue channel is provided in the first positioning groove (210); when a portion of the instrument tube (510) and a portion of the camera module (520) are both located in the first positioning groove (210), the glue channel is located between the instrument tube (510) and the camera module (520).

5. The front end housing according to claim 2, characterized in that: The support structure (200) comprises a main body (220) and a first flange portion (230), wherein the first flange portion (230) is arranged at the distal end of the main body (220) and is bent relative to the main body (220), and the main body (220) and the first flange portion (230) both extend along the circumference of the front end shell (100), the accommodating space (201) is located in the main body (220), and the first flange portion (230) faces the accommodating space (201).

6. The front end housing according to claim 5, characterized in that: The first positioning groove (210) comprises a first groove section (211) and a second groove section (212), wherein the first groove section (211) is provided on the main body (220), and the second groove section (212) is provided on the first flange portion (230), and the first groove section (211) passes through the main body (220). When the camera module (520) is supported in the first positioning groove (210) and a portion of the instrument tube (510) is located in the accommodating space (201), the bottom wall of the second groove section (212) is located between the camera module (520) and the instrument tube (510), and a gap is formed between the bottom wall and the camera module (520).

7. The front end housing according to claim 2, characterized in that A support portion (300) for supporting the circuit structure (600) is further extended from the inner wall of the front end shell (100), and the support portion (300) extends to the support structure (200).

8. The front end housing according to claim 1, wherein: A second positioning groove (111) is provided on the front end shell (100), the second positioning groove (111) is opposite to the first positioning groove (210), and the first positioning groove (210) and the second positioning groove (111) are used to position and clamp the camera module (520); A stop protrusion (110) is provided on the front end shell (100), and the second positioning groove (111) is provided on the stop protrusion (110). The stop protrusion (110) is used to limit the circuit structure (600) of the endoscope in a first direction, wherein the first direction is a direction extending from the proximal end to the distal end of the front end shell (100).

9. An insertion portion of an endoscope, characterized in that: The invention comprises a camera module (520), an instrument tube (510), and a front end shell (100) according to any one of claims 1 to 8, wherein the camera module (520) is carried in the first positioning groove (210), and a part of the camera module (520) is located in the first positioning groove (210).

10. An endoscope, characterized in that: Comprising the insert portion according to claim 9.

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