Front end assembly, insertion part and ultrasonic endoscope

Abstract

The utility model discloses a front end assembly, an insertion part and an ultrasonic endoscope, and relates to the technical field of medical instruments. The front end assembly is used for the ultrasonic endoscope and comprises a front end base and a camera shooting module, an instrument channel is arranged at the near end of the front end base, the wall face of the near end of the instrument channel is of an inclined structure, the camera shooting module is located above the inclined structure, and a first gap is formed between the camera shooting module and the inclined structure. And the distal height of the first gap is less than the proximal height of the first gap. The front-end assembly can reduce the radial size of the front-end seat on the premise of ensuring the installation reliability of the camera module, and facilitates the insertion of the insertion part into the cavity channel.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a front-end component, an insertion part and an ultrasonic endoscope. Background Art

[0002] An endoscope is a commonly used medical device that can directly enter the cavity for examination and provide sufficient diagnostic information for doctors. With the continuous progress of technology, an ultrasonic endoscope that combines the endoscope with ultrasonic technology has emerged. By arranging an ultrasonic probe at the front end of the insertion part, the ultrasonic endoscope can perform ultrasonic scanning after being inserted into the cavity, and can provide more accurate diagnostic information for doctors with the assistance of ultrasound.

[0003] In the related art, the distal end of the insertion part of the ultrasonic endoscope is a front-end seat, and devices such as a camera module are arranged on the front-end seat. Considering the reliability of the installation of the camera module, it is usually necessary to reserve enough glue injection space between the camera module and the front-end seat to ensure that the injected colloid is sufficient and has a preset connection effect. However, when the glue injection space between the camera module and the front-end seat is too large, the overall radial dimension of the front-end component of the insertion part will be too large, which is not conducive to inserting the insertion part into the cavity.

[0004] Therefore, providing an ultrasonic endoscope that can reduce the radial dimension of the front-end component is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Utility Model

[0005] The utility model discloses a front-end component, an insertion part and an ultrasonic endoscope to solve the technical problem that the front-end component of the ultrasonic endoscope in the related art has an over-large radial dimension.

[0006] To solve the above problems, the utility model adopts the following technical solutions:

[0007] The first aspect of the utility model provides a front-end component.

[0008] The front-end component of the utility model is used for an ultrasonic endoscope. The front-end component includes a front-end seat and a camera module. Among them, an instrument channel is provided at the proximal end of the front-end seat, the wall surface at the proximal end of the instrument channel is an inclined structure, the camera module is located above the inclined structure, and a first gap is formed between the camera module and the inclined structure, and the height of the distal end of the first gap is less than the height of the proximal end of the first gap.

[0009] Further, the inclination angle of the inclined structure satisfies: 15° ≤ α ≤ 30°, where α is the included angle between the inclined structure and the first plane, and the first plane is the extension plane of the plane where the outlet of the instrument channel is located.

[0010] Further, the imaging module is arranged along the axial direction of the front end seat, and the distal end face of the imaging module is located proximal to the outlet of the instrument channel.

[0011] Further, the bottom surface of the imaging module abuts against the plane where the outlet of the instrument channel is located; or the bottom surface of the imaging module is located above the plane where the outlet of the instrument channel is located, and a second gap is formed between the imaging module and the plane where the outlet of the instrument channel is located.

[0012] Further, the front end assembly further includes a support portion and a circuit board, and the imaging module is mounted on the circuit board. Wherein, the support portion is located proximal to the front end seat, and the support portion is used for mounting the circuit board and forming a third gap between the support portion and the circuit board.

[0013] Further, a first abutting surface is provided at the proximal end of the front end seat, and the distal end face of the bent section of the insertion portion is formed as a second abutting surface, and the first abutting surface and the second abutting surface are used for axially limiting the circuit board.

[0014] Further, the surface of the support portion is lower than the surface at the proximal end of the front end seat, and the proximal end face of the front end seat is formed as the first abutting surface; or a first positioning portion is provided on the front end seat, and the proximal end face of the first positioning portion is formed as the first abutting surface.

[0015] Further, a second positioning portion is further provided on the front end seat, and the side surface of the second positioning portion is formed as a third abutting surface, and the third abutting surface is used for radially limiting the circuit board.

[0016] A second aspect of the present utility model provides an insertion portion.

[0017] The insertion portion of the present utility model includes a front end assembly and a bent section. The front end assembly is provided at the distal end of the bent section, and the front end assembly is the front end assembly described in any one of the technical solutions of the present utility model.

[0018] A third aspect of the present utility model provides an ultrasonic endoscope.

[0019] The ultrasonic endoscope of the present utility model includes a handle, an insertion portion and a display device. The handle is connected to the insertion portion, the handle is further connected to the display device, and the insertion portion is the insertion portion described in any one of the technical solutions of the present utility model.

[0020] The technical solution adopted by the present utility model can achieve the following beneficial effects:

[0021] For the front-end component of the present utility model, an instrument channel is provided at the proximal end of the front-end seat. The wall surface at the proximal end of the instrument channel is of an inclined structure. The imaging module is located above the inclined structure, and a first gap is formed between the imaging module and the inclined structure. The first gap can be formed into a glue injection space. Since the height of the distal end of the first gap is less than the height of the proximal end of the first gap, more glue can be accommodated at the proximal end of the glue injection space, thereby ensuring the reliability of the bonding between the imaging module and the front-end seat. At the same time, since the glue injection space is formed by the inclined setting of the wall surface at the proximal end of the instrument channel, the inclined structure is adapted to the inclined shape of the instrument channel. This structure can not only improve the space utilization rate in the overall layout of the front-end seat, but also, on the premise of ensuring the installation reliability of the imaging module, is beneficial to reducing the radial dimension of the front-end seat and facilitating the insertion of the insertion part into the cavity.

[0022] That is, for the front-end component of the present utility model, by setting the wall surface at the proximal end of the instrument channel as an inclined structure, the radial dimension of the front-end seat can be reduced on the premise of ensuring the installation reliability of the imaging module, solving the technical problem of the over-large radial dimension existing in the front-end component of the ultrasonic endoscope in the related art. Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 is the first schematic diagram of the front-end component in the embodiment of the present application;

[0025] Figure 2 is the second schematic diagram of the front-end component in the embodiment of the present application;

[0026] Figure 3 is the first partial schematic diagram of the front-end component in the embodiment of the present application;

[0027] Figure 4 is the second partial schematic diagram of the front-end component in the embodiment of the present application;

[0028] Figure 5 is Figure 4 the enlarged view of part A in

[0029] Figure 6 is the partial schematic diagram of the front-end seat in the embodiment of the present application;

[0030] Figure 7 is the first schematic diagram of the front-end component in another embodiment of the present application;

[0031] Figure 8 It is the second schematic diagram of the front-end component in another embodiment of the present application;

[0032] Figure 9 It is the first partial schematic diagram of the front-end component in another embodiment of the present application;

[0033] Figure 10 It is the second partial schematic diagram of the front-end component in another embodiment of the present application;

[0034] Figure 11 It is Figure 10 The enlarged view of part B in

[0035] Figure 12 It is the partial schematic diagram of the front-end base in another embodiment of the present application.

[0036] In the figure: 110, front-end base; 111, instrument channel; 1111, inclined structure; 1112, first plane; 1113, outlet; 112, first abutting surface; 113, first positioning portion; 114, second positioning portion; 1141, third abutting surface; 120, camera module; 121, camera; 122, light source; 130, first gap; 140, second gap; 150, support portion; 160, circuit board; 170, third gap; 180, transducer; 200, bending section; 210, second abutting surface. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the scope protected by the present utility model.

[0038] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0039] In various embodiments of the present application, "proximal end" and "distal end" refer to the relative distances of various components from the user in the usage environment. Specifically, 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".

[0040] In the related art, the proximal end of the front end seat of an ultrasonic endoscope is usually a horizontal structure, and the camera module is located above the proximal end of the front end seat. To ensure the reliability of the installation of the camera module, sufficient glue injection space usually needs to be reserved between the camera module and the front end seat, resulting in an overly large overall radial dimension of the front end assembly of the insertion part, which is not conducive to inserting the insertion part into the canal.

[0041] Therefore, the present application provides a front end assembly, in which the wall surface of the proximal end of the instrument channel is set as an inclined structure, so that the gap between the camera module and the wall surface of the proximal end of the instrument channel can be increased on the premise of ensuring that the overall radial dimension of the front end assembly remains unchanged. Furthermore, the glue injection amount can be increased, and the reliability of the installation of the camera module can be improved.

[0042] The following combines the attached Figures 1 to 12 to elaborate in detail on the front end assembly, insertion part, and ultrasonic endoscope provided by the embodiments of the present application through specific embodiments and their application scenarios.

[0043] The first aspect of this embodiment elaborates in detail on the front end assembly.

[0044] The front end assembly of this embodiment is used for an ultrasonic endoscope, specifically for the distal end of the insertion part of the ultrasonic endoscope. The working principle of the ultrasonic endoscope is prior art and will not be elaborated here.

[0045] The front end assembly of this embodiment includes a front end seat 110 and a camera module 120, as Figure 1 and Figure 7 shown. The front end seat 110 is the installation basis for the camera module 120, etc. The proximal end of the front end seat 110 is provided with an instrument channel 111, and the instrument channel 111 is used for allowing the treatment instrument to pass through, as Figure 1 and Figure 7 shown. The camera module 120 includes a camera 121 and a light source 122, as Figures 1 to 5 , Figures 7 to 11 shown.

[0046] Preferably, the wall surface of the proximal end of the instrument channel 111 is an inclined structure 1111, as Figures 3 to 5 , Figures 9 to 11As shown. The wall surface at the proximal end of the instrument channel 111 is an inclined structure 1111, which means that the upper surface of the wall surface at the proximal end of the instrument channel 111 is inclined. Exemplarily, the inclined structure 1111 is inclined downward from the distal end to the proximal end. The camera module 120 is located above the inclined structure 1111, and a first gap 130 is formed between the camera module 120 and the inclined structure 1111, and the height of the distal end of the first gap 130 is less than the height of the proximal end of the first gap 130, such as Figures 3 to 5 , Figures 9 to 11 shown. The height of the first gap 130 refers to the height of the first gap 130 in the vertical direction, or the height of the first gap 130 in the radial direction of the front end seat 110.

[0047] Exemplarily, the inclined structure 1111 on the proximal wall surface of the instrument channel 111 can be formed by thinning the proximal wall surface of the instrument channel 111.

[0048] For the front-end assembly of the ultrasonic endoscope, in addition to being used to install the camera module 120 and form the instrument channel 111, the distal end of the front end seat 110 is also used to install structures such as the transducer 180. The transducer 180 is used to transmit and receive ultrasonic waves, such as Figure 4 , Figure 7 and Figure 8 shown. The outlet 1113 of the instrument channel 111 is usually provided on the upper surface of the front end seat 110, so that the instrument channel 111 located at the proximal end of the front end seat 110 is inclined, such as Figure 3 , Figure 4 , Figure 9 and Figure 11 shown.

[0049] Such as Figure 3 and Figure 9 shown, the inclined structure 1111 formed in this embodiment corresponds to the instrument channel 111 and just adapts to the inclined shape of the instrument channel 111, which can improve the space utilization rate in the overall layout of the front end seat 110.

[0050] For the front-end assembly of this embodiment, the first gap 130 can be formed into a glue injection space. Since the height of the distal end of the first gap 130 is less than the height of the proximal end of the first gap 130, more glue can be accommodated at the proximal end of the glue injection space, thus ensuring the reliability of the glue bonding between the camera module 120 and the front end seat 110; at the same time, since the glue injection space is formed by the inclined setting of the wall surface at the proximal end of the instrument channel 111, the radial dimension of the front end seat 110 can be reduced on the premise of ensuring the installation reliability of the camera module 120, which is beneficial to the insertion part to be inserted into the cavity. That is, the front-end assembly of this embodiment solves the technical problem of the over-large radial dimension existing in the front-end assembly of the ultrasonic endoscope in the related art.

[0051] According to an optional embodiment, the inclination angle of the inclined structure 1111 satisfies: 15° ≤ α ≤ 30°, where α is the angle between the inclined structure 1111 and the first plane 1112, and the first plane 1112 is the extended plane of the plane where the outlet 1113 of the instrument channel 111 is located. α is particularly the smaller one of the angles between the inclined structure 1111 and the first plane 1112. Exemplarily, the first plane 1112 is a horizontal plane. Exemplarily, the inclination angles of the inclined structure 1111 are 15°, 20°, 25° and 30°.

[0052] In the front-end assembly of the preferred technical solution of this embodiment, restricting the inclination angle of the inclined structure 1111 to satisfy: 15° ≤ α ≤ 30° can, on the one hand, avoid the problem that the inclination angle of the inclined structure 1111 is too small, resulting in less glue liquid that can be accommodated in the first gap 130 (that is, the glue injection space), and unable to ensure the installation reliability of the camera module 120. On the other hand, it can also avoid the problem that the inclination angle of the inclined structure 1111 is too large, resulting in the proximal wall surface of the instrument channel 111 being too thin and affecting the strength of the front-end seat 110.

[0053] According to an optional embodiment, the camera module 120 is arranged along the axial direction of the front-end seat 110, as Figures 1 to 4 、 Figures 7 to 10 shown. The camera module 120 is arranged along the axial direction of the front-end seat 110, that is, the central axis of the camera module 120 is parallel to the central axis of the front-end seat 110. The camera module 120 is arranged along the axial direction of the front-end seat 110, which is beneficial for the camera module 120 to obtain a larger range of images, so as to accurately locate the position of the affected part. On the other hand, the camera module 120 is arranged along the axial direction of the front-end seat 110, which is also beneficial for forming a larger glue injection space between the camera module 120 and the front-end seat 110 to ensure the installation reliability of the camera module 120.

[0054] In the ultrasonic endoscope in the related art, the transducer 180 is a convex curved surface structure, and the transducer 180 is arranged at the distal end of the front-end seat 110, so that the distal end face of the front-end seat 110 forms a convex curved surface structure. In order to avoid the front-end seat 110 from blocking the shooting range of the camera module 120, the camera module 120 is usually inclined and arranged on the front-end seat 110. This setting method results in a limited shooting range of the camera module 120.

[0055] As Figure 1 and Figure 7 shown, the proximal end of the front-end seat 110 in this embodiment is a horizontal structure, and the distal end is a conical structure, and in the direction from the proximal end to the distal end, the height of the conical structure gradually decreases. This structure of the front-end seat 110 enables the camera module 120 to be arranged along the axial direction of the front-end seat 110, and the front-end seat 110 will not block the shooting range of the camera module 120.

[0056] Preferably, the distal end face of the camera module 120 is located proximal to the outlet 1113 of the instrument channel 111, as Figure 1 and Figure 7 shown. As Figure 1 and Figure 7 shown, the camera module 120 is located in front of the outlet 1113 of the instrument channel 111, enabling the shooting range of the camera module 120 to cover the outlet 1113 of the instrument channel 111, so as to obtain a larger observation field of view.

[0057] According to an alternative embodiment, the bottom surface of the camera module 120 abuts against the plane where the outlet 1113 of the instrument channel 111 is located. Preferably, the distal end of the bottom surface of the camera module 120 abuts against the plane where the outlet 1113 of the instrument channel 111 is located. On the one hand, the plane where the outlet 1113 of the instrument channel 111 is located can provide support for the camera module 120, preventing the camera module 120 from being displaced under pressure during the injection molding process, thereby affecting the connection relationship between the camera module 120 and the circuit board 160; the formation of a surface-to-surface contact constraint between the camera module 120 and the plane where the outlet 1113 of the instrument channel 111 is located is also conducive to ensuring the correct setting of the camera module 120, that is, the camera module 120 can be arranged along the axial direction of the front end seat 110.

[0058] According to another alternative embodiment, the bottom surface of the camera module 120 is located above the plane where the outlet 1113 of the instrument channel 111 is located, and a second gap 140 is formed between the camera module 120 and the plane where the outlet 1113 of the instrument channel 111 is located, as Figure 2 and Figure 8 shown. Since the bottom surface of the camera module 120 is located above the plane where the outlet 1113 of the instrument channel 111 is located, the area within the instrument channel 111 covered by the viewing angle range of the camera module 120 can be closer to the proximal side of the front end assembly, thereby providing more views of the interior of the instrument channel 111.

[0059] According to an alternative embodiment, the front end assembly further includes a support portion 150 and a circuit board 160, as Figures 3 to 6 、 Figures 9 to 12 shown. The support portion 150 is located proximal to the front end seat 110, and the support portion 150 is used to mount the circuit board 160. The camera module 120 is mounted on the circuit board 160. Preferably, a third gap 170 is formed between the support portion 150 and the circuit board 160, as Figure 5 and Figure 11 shown. The third gap 170 can also be formed as an injection molding space, thereby ensuring the reliability of the connection between the circuit board 160 and the support portion 150.

[0060] Preferably, the support portion 150 and the front end seat 110 are of an integral structure. Without being limited thereto, the support portion 150 and the front end seat 110 may be of a split structure, and the two may be fixedly connected by means of snap connection, welding, bonding, etc. More preferably, the support portion 150 is an arc-shaped structure corresponding to the proximal end of the front end seat 110, and the circuit board 160 is also an arc-shaped structure, so as to improve the space utilization rate of the front-end component from the overall structural layout.

[0061] According to an optional embodiment, a first abutting surface 112 is provided at the proximal end of the front end seat 110, and the distal end face of the bent section 200 of the insertion portion is formed as a second abutting surface 210. The first abutting surface 112 and the second abutting surface 210 are used for axially limiting the circuit board 160, such as Figures 4 to 6 , Figures 10 to 12 shown. In the front-end component of the preferred technical solution of this embodiment, the circuit board 160 is axially limited by the first abutting surface 112 and the second abutting surface 210, which can ensure the installation accuracy of the circuit board 160 in the axial direction; at the same time, by using the proximal end of the front end seat 110 to form the first abutting surface 112 and the distal end face of the bent section 200 to form the second abutting surface 210, it is also beneficial to simplify the structure of the front-end component.

[0062] Preferably, the surface of the support portion 150 is lower than the surface of the proximal end of the front end seat 110, and the proximal end face of the front end seat 110 is formed as the first abutting surface 112, such as Figure 6 shown. The first abutting surface 112 formed in this form does not require an additional positioning structure, which is beneficial to simplifying the structure of the front-end component.

[0063] Preferably, a first positioning portion 113 is provided on the front end seat 110, and the proximal end face of the first positioning portion 113 is formed as the first abutting surface 112, such as Figure 12 shown. The first abutting surface 112 formed in this form can make the contact area between the first abutting surface 112 and the circuit board 160 larger, which is beneficial to enhancing the limiting effect of the first abutting surface 112 on the circuit board 160.

[0064] According to an optional embodiment, a second positioning portion 114 is further provided on the front end seat 110, and the side surface of the second positioning portion 114 is formed as a third abutting surface 1141. The third abutting surface 1141 is used for radially limiting the circuit board 160, such as Figure 12As shown, the circuit board 160 is limited in the radial direction by the third abutting surface 1141. In addition, the circuit board 160 can be axially limited by the first abutting surface 112 and the second abutting surface 210, and the circuit board 160 can also be supported by the supporting portion 150. The circuit board 160 can be limited in multiple directions, thereby further enhancing the installation accuracy of the circuit board 160. At the same time, since the imaging module 120 is installed on the circuit board 160 and the circuit board 160 has a high installation accuracy, the installation accuracy of the imaging module 120 can also be improved, thereby improving the shooting effect of the imaging module 120.

[0065] The second aspect of this embodiment will be described in detail for the insertion portion.

[0066] The insertion portion of this embodiment includes a front-end assembly and a bending section 200. The front-end assembly is provided at the distal end of the bending section 200, as Figure 1 and Figure 7 shown. The front-end assembly is the front-end assembly of any one of the technical solutions in this embodiment. The bending section 200 includes an active bending section and a passive bending section. Figure 1 , Figure 3 , Figure 4 , Figure 7 , Figure 9 and Figure 10 only show a schematic diagram of a partial length of the bending section 200. The structure of the bending section 200 can be the same as the corresponding structure in the existing ultrasonic endoscope and will not be elaborated here.

[0067] The insertion portion of this embodiment has the front-end assembly of any one of the technical solutions in this embodiment, so that the insertion portion of this embodiment can reduce the radial dimension of the front-end seat 110 on the premise of ensuring the installation reliability of the imaging module 120, which is beneficial for the insertion portion to be inserted into the channel.

[0068] The third aspect of this embodiment will be described in detail for the ultrasonic endoscope.

[0069] The ultrasonic endoscope of this embodiment includes a handle, an insertion portion, and a display device. The handle is connected to the insertion portion, and the handle is also connected to the display device. The insertion portion is the insertion portion of any one of the technical solutions in this embodiment. The structures of the handle and the display device can be the same as the corresponding structures in the existing ultrasonic endoscope and will not be elaborated here.

[0070] The ultrasonic endoscope of this embodiment has the insertion portion of any one of the technical solutions in this embodiment, which can reduce the difficulty of inserting the ultrasonic endoscope into the channel.

[0071] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0072] As described above, the above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model.

Claims

1. A front end assembly for an ultrasonic endoscope, characterized in that: The front end assembly comprises a front end seat (110) and a camera module (120), wherein an instrument channel (111) is provided at the proximal end of the front end seat (110), and a wall surface at the proximal end of the instrument channel (111) is an inclined structure (1111), and the camera module (120) is located above the inclined structure (1111), so that a first gap (130) is formed between the camera module (120) and the inclined structure (1111), and a distal end height of the first gap (130) is smaller than a proximal end height of the first gap (130).

2. The front end assembly according to claim 1, characterized in that: The inclination angle of the inclined structure (1111) satisfies: 15°≤α≤30°, wherein: α is the angle between the inclined structure (1111) and the first plane (1112), and the first plane (1112) is an extension of the plane where the outlet (1113) of the instrument channel (111) is located.

3. The front end assembly according to claim 1, characterized in that: The camera module (120) is arranged along the axial direction of the front end seat (110), and the distal end surface of the camera module (120) is located at the proximal end of the outlet (1113) of the instrument channel (111).

4. The front end assembly according to claim 3, characterized in that: The bottom surface of the camera module (120) abuts against the plane where the outlet (1113) of the instrument channel (111) is located; or The bottom surface of the camera module (120) is located above the plane where the outlet (1113) of the instrument channel (111) is located, and a second gap (140) is formed between the camera module (120) and the plane where the outlet (1113) of the instrument channel (111) is located.

5. The front end assembly according to any one of claims 1 to 4, characterized in that: It also includes a support portion (150) and a circuit board (160), the camera module (120) being mounted on the circuit board (160), wherein the support portion (150) is located at the proximal end of the front end seat (110), the support portion (150) being used to mount the circuit board (160), and forming a third gap (170) between the support portion (150) and the circuit board (160).

6. The front end assembly according to claim 5, characterized in that The proximal end of the front end seat (110) is provided with a first abutment surface (112), and the distal end surface of the curved section (200) of the insertion portion is formed as a second abutment surface (210), and the first abutment surface (112) and the second abutment surface (210) are used to axially limit the circuit board (160).

7. The front end assembly according to claim 6, characterized in that: The surface of the support portion (150) is lower than the surface of the proximal end of the front end seat (110), and the proximal end surface of the front end seat (110) is formed as the first abutting surface (112); or The front end seat (110) is provided with a first positioning portion (113), and a proximal end surface of the first positioning portion (113) is formed as the first abutting surface (112).

8. The front end assembly according to claim 6, characterized in that: A second positioning portion (114) is also provided on the front end seat (110), and a side surface of the second positioning portion (114) is formed as a third abutting surface (1141), and the third abutting surface (1141) is used to limit the radial position of the circuit board (160).

9. An insertion portion, characterized in that: It comprises a front end component and a curved section (200), wherein the front end component is arranged at the distal end of the curved section (200), and the front end component is the front end component according to any one of claims 1 to 8.

10. An ultrasonic endoscope, characterized in that: The invention comprises a handle, an insertion part and a display device, wherein the handle is connected to the insertion part, the handle is also connected to the display device, and the insertion part is the insertion part according to claim 9.

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