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 transducer, the far end of the front end base is of a conical structure, the conical structure is provided with an installation face, the installation face is used for installing the transducer, the height of the conical structure is gradually reduced in the direction from the near end to the far end, and the axial length of the conical structure is larger than the radial height of the conical structure. According to the front end assembly, on the basis of ensuring the load area of the transducer, the difficulty that the insertion part enters the cavity can be reduced, and the convenience that the insertion part enters the cavity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a front-end assembly, 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 an 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, an ultrasonic transducer is arranged at the front end of the insertion part of the ultrasonic endoscope, and the ultrasonic transducer is used to transmit and receive ultrasonic waves. In order to ensure the load area of the ultrasonic transducer, the ultrasonic transducer is usually set as a convex curved surface structure, which extends from the upper end surface of the front-end seat to the distal end surface, resulting in the front-end seat of the insertion part being formed into an obtuse structure, and the size of its distal end surface is large, which is not conducive to inserting the insertion part into the cavity.

[0004] Therefore, providing an ultrasonic endoscope front-end assembly that is easy to insert into the cavity 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 assembly, an insertion part and an ultrasonic endoscope to solve the technical problem that the front-end assembly of the ultrasonic endoscope in the related art is not easy to insert into the cavity.

[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 assembly.

[0008] The front-end assembly of the utility model is used for an ultrasonic endoscope. The front-end assembly includes a front-end seat and a transducer. Among them, the distal end of the front-end seat is a conical structure, the conical structure has an installation surface for installing the transducer, and in the direction from the proximal end to the distal end, the height of the conical structure gradually decreases, and the axial length of the conical structure is greater than the radial height.

[0009] Further, the axial length and radial height of the conical structure satisfy: L 1 / H≥2, where L 1 is the axial length of the conical structure, and H is the radial height of the conical structure.

[0010] Further, the distal end surface of the front-end seat is a filleted structure.

[0011] Further, the mounting surface is of a planar structure, and the transducer is of a planar structure; and the transducer is disposed inside the mounting surface; or the transducer is embedded in the surface of the mounting surface, and the surface of the transducer and the surface of the mounting surface are coplanar structures.

[0012] Further, along the width direction of the mounting surface, a first width at the proximal end of the mounting surface is greater than a second width at the distal end of the mounting surface.

[0013] Further, the front end seat includes a first seat body and a second seat body, the first seat body and the second seat body are detachably connected, and the connection part between the first seat body and the second seat body is a coplanar structure, or along the radial direction of the front end seat, the first seat body protrudes from the surface of the second seat body, and the first seat body is the one close to the distal end face of the front end seat.

[0014] Further, the first seat body includes an instrument channel part and a mounting part, the instrument channel part is located at the proximal end, the mounting part is located at the distal end, and the instrument channel part and the mounting part are of an integral structure.

[0015] Further, the front end assembly further includes a navigation element, the navigation element is disposed on one side of the transducer close to the proximal end, or the navigation element is disposed inside the front end seat, and along the axial direction of the front end seat, the navigation element and the transducer at least partially overlap.

[0016] The second aspect of the present utility model provides an insertion part.

[0017] The insertion part of the present utility model includes a front end assembly and a bending section, the front end assembly is disposed at the distal end of the bending 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] The 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 part and a display device, the handle is connected to the insertion part, the handle is further connected to the display device, and the insertion part is the insertion part 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, the distal end of the front-end seat is of a conical structure. In the direction from the proximal end to the distal end, the height of the conical structure gradually decreases, and the axial length of the conical structure is greater than the radial height. On the one hand, the distal end of the front-end seat being of a conical structure is conducive to reducing the radial size of the front-end seat. Moreover, since the axial length of the conical structure is greater than the radial height, the distal end of the front-end seat is formed into an elongated structure, and the slope of the conical structure is relatively gentle. When the insertion part is inserted into the cavity, it can reduce the difficulty of entry of the insertion part and improve the convenience of the insertion part entering the cavity. On the other hand, the transducer is installed on the mounting surface of the conical structure. Since the axial length of the conical structure is relatively long, the transducer can be set to be relatively long, enabling the transducer to have a sufficient load area, thereby ensuring that the efficacy of the transducer is not affected.

[0022] That is, for the front-end component of the present utility model, by setting the distal end of the front-end seat as a conical structure, on the basis of ensuring the load area of the transducer, the technical problem that the front-end component of the ultrasonic endoscope in the related art is not easily inserted into the cavity is solved. 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, without creative efforts, other drawings can be obtained based on these drawings.

[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 partial schematic diagram of the front-end component in the embodiment of the present application;

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

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

[0028] Figure 5 is the first schematic diagram of the front-end component in another embodiment of the present application;

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

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

[0031] In the figure: 110, front end seat; 111, conical structure; 1111, mounting surface; 1112, arc structure; 112, rounded structure; 113, first seat body; 1131, instrument channel part; 1131a, instrument channel; 1132, mounting part; 114, second seat body; 115, stepped surface; 116, first wire passing channel; 117, second wire passing channel; 120, transducer; 130, navigation element; 140, camera module; 150, light source module; 200, bending section. Detailed implementation manners

[0032] 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 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.

[0033] The terms "first", "second", etc. in the description and claims of this 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 this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0034] In the embodiments of this application, "proximal end" and "distal end" refer to the relative distances of each component from the user in the usage environment. Among them, 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".

[0035] In the related art, for an ultrasonic endoscope, the ultrasonic transducer is provided with a convex curved surface structure, and the curved surface structure extends from the upper end surface of the front end seat to the distal end surface, resulting in the front end seat of the insertion portion being formed into an obtuse structure with a relatively large distal end surface size. When the insertion portion is inserted into the cavity, the resistance received is relatively large, which is not conducive to the insertion portion being inserted into the cavity. For this reason, the present application provides a front end assembly. The distal end of the front end assembly is a conical structure, which can reduce the size of the distal end of the front end assembly, thereby reducing the difficulty of the insertion portion entering the cavity. At the same time, the axial length of the conical structure is greater than the radial height. When the transducer is installed on the installation surface of the conical structure, the axial length of the transducer can be set to be relatively long, so as to make up for the reduced load area by using the increased length in the axial direction of the transducer to ensure that the load area of the transducer is not affected.

[0036] The following will be combined with the attached Figures 1 to 7 drawings, and the front end assembly, insertion portion and ultrasonic endoscope provided by the embodiments of the present application will be described in detail through specific embodiments and their application scenarios.

[0037] The first aspect of this embodiment will be described in detail for the front end assembly.

[0038] The front end assembly of this embodiment is used for an ultrasonic endoscope, specifically for the distal end of the insertion portion of the ultrasonic endoscope. The working principle of the ultrasonic endoscope is the prior art and will not be elaborated here.

[0039] The front end assembly of this embodiment includes a front end seat 110 and a transducer 120, as shown in Figure 2 and Figure 6 . The front end seat 110 is the installation basis for the transducer 120, the navigation element 130, the camera module 140, the light source module 150, etc., as shown in Figure 1 , Figure 2 , Figure 5 and Figure 6 .

[0040] Preferably, the distal end of the front end seat 110 is a conical structure 111, as shown in Figure 1 , Figure 2 , Figure 5 and Figure 6 . The conical structure 111 means that the distal end size of the front end seat 110 is smaller than its proximal end size. Further, the size of the front end seat 110 mentioned here refers to its size in the height direction and / or width direction.

[0041] More preferably, the conical structure 111 has an installation surface 1111 for installing the transducer 120, as shown in Figure 1 , Figure 2 , Figure 5 and Figure 6As shown. In the direction from proximal to distal, the height of the conical structure 111 gradually decreases, and the axial length of the conical structure 111 is greater than the radial height, as Figure 1 , Figure 2 , Figure 5 and Figure 6 shown.

[0042] More preferably, the axial length and the radial height of the conical structure 111 satisfy: L 1 / H ≥ 2, where L 1 is the axial length of the conical structure 111, and H is the radial height of the conical structure 111. Exemplarily, the axial length and the radial height of the conical structure 111 satisfy: L 1 / H = 2; the axial length and the radial height of the conical structure 111 satisfy: L 1 / H = 2.5; the axial length and the radial height of the conical structure 111 satisfy: L 1 / H = 3.

[0043] In the front-end assembly of this embodiment, the distal end of the front-end seat 110 is a conical structure 111. In the direction from proximal to distal, the height of the conical structure 111 gradually decreases, and the axial length of the conical structure 111 is greater than the radial height. The distal end of the front-end seat 110 being a conical structure 111 is beneficial to reducing the radial dimension of the front-end seat 110, and the axial length of the conical structure 111 being greater than the radial height also makes the distal end of the front-end seat 110 form an elongated structure, and the slope of the conical structure 111 is relatively gentle. When the insertion part is inserted into the cavity, the difficulty of the insertion part entering can be reduced, and the convenience of the insertion part entering the cavity is improved.

[0044] On the other hand, the transducer 120 is mounted on the mounting surface 1111 of the conical structure 111. Since the length of the conical structure 111 in the axial direction is relatively long, the transducer 120 can be set to be relatively long, so that the transducer 120 in this embodiment can make up for the reduced load area by increasing its axial length to ensure that the transducer 120 in this embodiment has a sufficient load area and the efficacy of the transducer 120 is not affected.

[0045] That is, in the front-end assembly of this embodiment, by setting the distal end of the front-end seat 110 as a conical structure 111, on the basis of ensuring the load area of the transducer 120, the technical problem that the front-end assembly of the ultrasonic endoscope in the related art is not easy to be inserted into the cavity is solved.

[0046] In the related art, for the ultrasonic endoscope, since the transducer 120 has a convex curved surface structure and the transducer 120 is arranged at the distal end of the front end seat 110, the distal end surface of the front end seat 110 forms a convex curved surface structure. In order to avoid the front end seat 110 blocking the shooting range of the camera module 140, the camera module 140 is usually inclined on the front end seat 110. This setting method results in a limited shooting range of the camera module 140.

[0047] Preferably, the camera module 140 of this embodiment is arranged along the axial direction of the front end seat 110, as Figure 1 、 Figure 2 、 Figures 4 to 6 shown. The camera module 140 is arranged along the axial direction of the front end seat 110, that is, the central axis of the camera module 140 is parallel to the central axis of the front end seat 110. In particular, the central axis of the camera module 140 is parallel to the central axis of the proximal end of the front end seat 110. Based on the structure of the front end seat 110 in the embodiment of the present application, when the camera module 140 is arranged along the axial direction of the front end seat 110, the front end seat 110 will not block the shooting range of the camera module 140, which is beneficial for the camera module 140 to obtain a larger range of images, so as to accurately locate the position of the affected part.

[0048] According to an optional embodiment, the distal end surface of the front end seat 110 is a rounded structure 112, as Figures 1 to 3 、 Figures 5 to 7 shown. In the front end assembly of the preferred technical solution of this embodiment, the distal end of the front end seat 110 is a conical structure 111. Therefore, the area of the distal end surface of the front end seat 110 is small, and the entire distal end surface can be rounded, that is, the distal end surface is integrally formed into a rounded structure 112, which can improve the smoothness of the front end seat 110. When the insertion part is inserted into the cavity, the entry difficulty of the insertion part can be further reduced, and the edges and corners of the end surface of the front end seat 110 can also be prevented from scratching the tissue in the cavity.

[0049] According to an optional embodiment, the mounting surface 1111 is a planar structure and the transducer 120 is a planar structure, as Figure 1 、 Figure 2 、 Figure 5 and Figure 6 shown. The mounting surface 1111 of the conical structure 111 is a plane, and this mounting surface 1111 is used to mount the transducer 120. Correspondingly, in this embodiment, the transducer 120 can also be set as a planar structure. Compared with the transducer 120 with a convex curved surface structure in the prior art, the transducer 120 in this embodiment is a planar structure, which has the advantages of lower production process difficulty and more convenient installation.

[0050] Preferably, the transducer 120 is a rectangular structure, and the length and width of the transducer 120 satisfy: L 2 / L 3≥ 2, where L 2 is the length of the transducer 120, L 3 is the length of the transducer 120. Exemplarily, the length and width of the transducer 120 satisfy: L 2 / L 3 = 2; the length and width of the transducer 120 satisfy: L 2 / L 3 = 2.5; the length and width of the transducer 120 satisfy: L 2 / L 3 = 3.

[0051] For the front-end component of the preferred technical solution of this embodiment, the mounting surface 1111 of the conical structure 111 is a plane, and this mounting surface 1111 is used to mount the transducer 120. Correspondingly, in this embodiment, the transducer 120 can also be set as a planar structure. Since the length of the front-end seat 110 in the axial direction is relatively long, the transducer 120 can be set to be relatively long, so that the transducer 120 in this embodiment can make up for its reduced load area (the load area reduced from the convex curved surface to the planar structure) by increasing its axial length, so that the transducer 120 in this embodiment can have a sufficient load area even if it is a planar structure, thus ensuring that the efficacy of the transducer 120 is not affected.

[0052] Preferably, the transducer 120 is arranged inside the mounting surface 1111, such as Figure 1 or Figure 2 shown. Exemplarily, the transducer 120 is arranged on the inner surface of the mounting surface 1111. Arranging the transducer 120 inside the mounting surface 1111 can protect the transducer 120 through the housing.

[0053] Preferably, the transducer 120 is embedded in the surface of the mounting surface 1111, such as Figure 5 or Figure 6 shown. Exemplarily, the transducer 120 is embedded in the upper surface of the mounting surface 1111. Embedding the transducer 120 in the surface of the mounting surface 1111 helps to improve the energy efficiency of the transducer 120.

[0054] More preferably, when the transducer 120 is embedded in the surface of the mounting surface 1111, the surface of the transducer 120 and the mounting surface 1111 are in a coplanar structure, such as Figure 5 or Figure 6 shown. That is: the upper surface of the transducer 120 and the upper surface of the mounting surface 1111 are in the same plane, and the connection between the transducer 120 and the mounting surface 1111 is also in the same plane. The coplanar structure of the surface of the transducer 120 and the mounting surface 1111 can improve the flatness of the front-end seat 110, and when the insertion part is inserted into the cavity, it can further prevent the edges or protrusions on the front-end seat 110 from scratching the tissue in the cavity.

[0055] According to an optional embodiment, along the width direction of the mounting surface 1111, the first width at the proximal end of the mounting surface 1111 is greater than the second width at the distal end of the mounting surface 1111, as Figure 1 or Figure 5 shown. In the front-end component of the preferred technical solution of this embodiment, the front-end seat 110 not only has a structure where the proximal dimension is greater than the distal dimension in the height direction, but also has a structure where the proximal dimension is greater than the distal dimension in its width direction. This can further reduce the size of the distal end of the front-end seat 110, and when the insertion part is inserted into the cavity, it can further reduce the difficulty of entry of the insertion part, and further improve the convenience of the insertion part entering the cavity.

[0056] Preferably, the side surface of the mounting surface 1111 is an arc-shaped structure 1112, as Figure 1 or Figure 5 shown. This can improve the smoothness of the mounting surface 1111. When the insertion part is inserted into the cavity, it can further reduce the difficulty of entry of the insertion part, and can also prevent the edges and corners on the side surface of the mounting surface 1111 from scratching the tissue in the cavity.

[0057] According to an optional embodiment, the front-end seat 110 includes a first seat body 113 and a second seat body 114, and the first seat body 113 and the second seat body 114 are detachably connected, as Figure 2 or Figure 6 shown. Exemplarily, the first seat body 113 and the second seat body 114 can be detachably connected by means such as buckling and plugging. The detachable connection between the first seat body 113 and the second seat body 114 facilitates the installation of the structures (such as the transducer 120, cables, etc.) inside the front-end seat 110.

[0058] Preferably, the connection part between the first seat body 113 and the second seat body 114 is a coplanar structure, as Figure 3 shown. That is to say: the connection part between the first seat body 113 and the second seat body 114 is flush, or in other words, the connection part between the first seat body 113 and the second seat body 114 is located in the same plane, as Figure 3 shown. The coplanar structure of the connection part between the first seat body 113 and the second seat body 114 can further improve the flatness of the front-end seat 110. When the insertion part is inserted into the cavity, it can further prevent the edges and corners or protrusions on the front-end seat 110 from scratching the tissue in the cavity.

[0059] Preferably, along the radial direction of the front-end seat 110, the first seat body 113 protrudes from the surface of the second seat body 114, and the first seat body 113 is the one closer to the distal end face of the front-end seat 110, as Figure 7 shown. The first seat body 113 protruding from the surface of the second seat body 114 causes a step surface 115 to be formed at the connection part between the first seat body 113 and the second seat body 114, as Figure 7As shown. When the insertion part is inserted into the cavity, the front end seat 110 transitions from the first seat body 113 with a higher height to the second seat body 114 with a lower height, so that the step surface 115 will not scratch the tissues in the cavity.

[0060] According to an optional embodiment, the first seat body 113 includes an instrument channel part 1131 and a mounting part 1132. The instrument channel part 1131 is located at the proximal end, and the mounting part 1132 is located at the distal end, as Figure 1 , Figure 2 , Figure 5 and Figure 6 shown. Preferably, the instrument channel part 1131 and the mounting part 1132 are of an integral structure. Exemplarily, the first seat body 113 is one located above the front end seat 110. Specifically, the mounting surface 1111 is located on the upper surface of the mounting part 1132. An instrument channel 1131a is formed on the instrument channel part 1131, and the instrument channel 1131a is used for the disposal instrument to pass through. The surface of the mounting part 1132 is formed as the mounting surface 1111, and the mounting surface 1111 is used for mounting the transducer 120. The first seat body 113 is of an integral structure, which can enhance the integrity of the front end seat 110. During use, the problem of separation between the instrument channel part 1131 and the mounting part 1132 can be avoided.

[0061] According to an optional embodiment, a first wire passing channel 116 and a second wire passing channel 117 are further formed on both sides of the instrument channel 1131a, as Figure 4 shown. In the case of large space requirements for the cable, the two wire routing channels can make full use of the space margin on the cross-section of the front end seat 110, avoiding the problem that the concentrated setting of the cable needs to occupy the instrument channel 1131a and the areas where related devices are located.

[0062] According to an optional embodiment, a navigation element 130 is further included, as Figure 1 or Figure 6 shown. The navigation element 130 is used to position the transducer 120.

[0063] Preferably, the navigation element 130 is arranged on the side of the transducer 120 close to the proximal end, as Figure 1 shown.

[0064] Preferably, the navigation element 130 is arranged inside the front end seat 110, and along the axial direction of the front end seat 110, the navigation element 130 and the transducer 120 at least partially overlap, as Figure 6 shown. In this way, the navigation element 130 can more accurately match the position of the transducer 120, improving the positioning accuracy.

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

[0066] The insertion part of this embodiment includes a front-end component and a bending section 200. The front-end component is arranged at the distal end of the bending section 200, as Figures 1 to 3 , Figures 5 to 7 shown. The front-end component is the front-end component of any one of the technical solutions in this embodiment. The bending section 200 includes an active bending section and a passive bending section. Figures 1 to 3 , Figures 5 to 7 Only a schematic diagram of the partial length of the bending section 200 is shown in

[0067] . 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.

[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 part, and a display device. The handle is connected to the insertion part, and the handle is also connected to the display device. The insertion part is the insertion part 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 part of any one of the technical solutions in this embodiment, which can reduce the difficulty of inserting the ultrasonic endoscope of this embodiment into the cavity.

[0071] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are 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 expressly listed, or also includes elements inherent to such 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 the 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. In addition, the features described with reference to certain examples may be combined in other examples.

[0072] The above are only the 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 conceive 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 transducer (120), wherein the distal end of the front end seat (110) is a conical structure (111), the conical structure (111) has a mounting surface (1111), the mounting surface (1111) is used to mount the transducer (120), and the height of the conical structure (111) gradually decreases from the proximal end to the distal end, and the axial length of the conical structure (111) is greater than the radial height.

2. The front end assembly according to claim 1, characterized in that: The axial length and radial height of the conical structure (111) satisfy: L1 / H≥2, wherein L1 is the axial length of the conical structure (111), and H is the radial height of the conical structure (111).

3. The front end assembly according to claim 1, characterized in that: The distal end surface of the front end seat (110) is a chamfered structure (112).

4. The front end assembly according to any one of claims 1 to 3, characterized in that: The mounting surface (1111) is a planar structure, and the transducer (120) is a planar structure; and The transducer (120) is arranged inside the mounting surface (1111); Alternatively, the transducer (120) is embedded in the surface of the mounting surface (1111), and the surface of the transducer (120) and the mounting surface (1111) are coplanar structures.

5. The front end assembly according to claim 4, characterized in that: Along the width direction of the mounting surface (1111), a first width at the proximal end of the mounting surface (1111) is greater than a second width at the distal end of the mounting surface (1111).

6. The front end assembly according to claim 1, characterized in that: The front end seat (110) comprises a first seat body (113) and a second seat body (114), the first seat body (113) and the second seat body (114) are detachably connected, and The connection between the first seat body (113) and the second seat body (114) is a coplanar structure. Alternatively, along the radial direction of the front end seat (110), the first seat body (113) protrudes from the surface of the second seat body (114), and the first seat body (113) is the one close to the distal end surface of the front end seat (110).

7. The front end assembly according to claim 6, characterized in that: The first seat body (113) comprises an instrument channel portion (1131) and a mounting portion (1132); the instrument channel portion (1131) is located at the proximal end, and the mounting portion (1132) is located at the distal end; the instrument channel portion (1131) and the mounting portion (1132) are an integrated structure.

8. The front end assembly according to claim 1, characterized in that: Also included is a navigation element (130), The navigation element (130) is disposed on a side of the transducer (120) close to the proximal end. Alternatively, the navigation element (130) is disposed in the front end seat (110), and along the axial direction of the front end seat (110), the navigation element (130) and the transducer (120) at least partially overlap.

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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