Tip structure and endoscope

Abstract

The utility model relates to a tip structure and an endoscope. The tip structure comprises a tip shell and an imaging module. A first containing cavity penetrating in the axial direction of the tip shell is formed in the tip shell, and a limiting table is arranged in the first containing cavity. A mounting groove is formed in the side wall, corresponding to the first accommodating cavity, of the tip shell; the mounting groove is communicated with the first accommodating cavity and exposes the limiting table; the imaging module is arranged in the first accommodating cavity; the imaging module comprises a camera module and a circuit board; the circuit board comprises a main body part and a mounting part which are mutually connected; at least part of the body part is located on the side, close to the mounting groove, of the limiting table. The mounting part is located on the side, close to the far end of the tip shell, of the limiting table and extends in the direction away from the mounting groove; the mounting part abuts against the limiting table; the camera module is arranged on the side, away from the limiting table, of the mounting part. Therefore, the reliability of the tip structure can be improved, and the reliability of the endoscope can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a tip structure and an endoscope. Background Art

[0002] Endoscopes are primarily used in surgical procedures and routine medical examinations. In clinical use, doctors insert the endoscope's tip into the body through natural orifices or by making tiny incisions. Using other surgical instruments and an image processor, they perform surgical procedures externally and internally. Compared to traditional surgical procedures, minimally invasive procedures using endoscopes inflict smaller incisions and allow patients to recover more quickly. Consequently, endoscopes have become widely used.

[0003] The tip of an endoscope houses an imaging module, which illuminates and observes human cavities and tissues. To ensure the tip of the endoscope can smoothly navigate narrow cavities and minimize surgical harm to the patient, the tip is typically designed to be very small. The assembly space for the molding module within the tip is very limited, making it difficult to accurately position the imaging module. This makes it difficult to control the assembly precision of the imaging module, thus affecting the reliability of the tip. Summary of the Invention

[0004] Based on this, the present application provides a tip head structure and an endoscope to facilitate the positioning of the imaging module and improve the assembly accuracy of the imaging module, thereby improving the reliability of the tip head structure.

[0005] A tip head structure includes a tip shell and an imaging module; a first accommodating cavity is provided in the tip shell, which penetrates along its own axial direction, and a limit platform is provided in the first accommodating cavity; a mounting groove is provided on the side wall of the tip shell corresponding to the first accommodating cavity; the mounting groove is connected to the first accommodating cavity and exposes the limit platform; the imaging module is arranged in the first accommodating cavity; the imaging module includes a camera module and a circuit board; the circuit board includes a main body and a mounting part connected to each other; at least part of the main body is located on a side of the limit platform close to the mounting groove; the mounting part is located on a side of the limit platform close to the far end of the tip shell, and extends in a direction away from the mounting groove; the mounting part abuts against the limit platform; the camera module is arranged on a side of the mounting part away from the limit platform.

[0006] In one embodiment, the tip head structure also includes an instrument channel tube; the tip shell is also provided with a second accommodating cavity that penetrates along its own axial direction, the second accommodating cavity is arranged in parallel with and connected to the first accommodating cavity, and the instrument channel tube is passed through the second accommodating cavity; the side of the limit platform close to the second accommodating cavity is adapted to the shape of the instrument channel tube.

[0007] In one embodiment, the main body also includes a first sub-part, a second sub-part and a bending part connecting the two; the first sub-part is located on the side of the limit platform close to the mounting slot, and the end of the first sub-part close to the camera module is connected to the mounting part; the bending part is located on the side of the limit platform away from the camera module; the second sub-part is connected to the end of the bending part away from the mounting slot.

[0008] In one embodiment, the first sub-section and the second sub-section are spaced apart from each other along the radial direction of the front end shell; and the second sub-section is arranged close to the center of the front end shell.

[0009] In one embodiment, the circuit board further includes two connecting portions, the two connecting portions are connected to the mounting portion at intervals and enclosed with the mounting portion to form a mounting space, and the camera module is located in the mounting space.

[0010] In one embodiment, one end of the connecting portion away from the mounting portion is bent in a direction away from the mounting space to form a limiting portion; the distal end of the tip shell is provided with a groove connected to the first accommodating cavity; the limiting portion abuts against the bottom wall of the groove.

[0011] In one embodiment, the imaging module further includes two light source components, and the two light source components are respectively disposed on the two limiting portions.

[0012] In one embodiment, a third accommodating cavity is provided in the distal shell body and is axially penetrated therethrough. The third accommodating cavity is arranged in parallel with the first accommodating cavity. The distal head structure further includes a sensor assembly, and the sensor assembly is provided in the third accommodating cavity.

[0013] In one embodiment, the tip head structure further includes a first annular connecting portion and a second annular connecting portion; the first annular connecting portion is used to connect to the snake bone; the second annular connecting portion connects the tip shell and the first annular connecting portion; the outer diameter of the second annular connecting portion is smaller than the outer diameter of the tip shell, and the outer diameter of the second annular connecting portion is larger than the outer diameter of the first annular connecting portion;

[0014] A notch is provided on the side wall of the first annular connecting portion corresponding to the second accommodating cavity; and / or,

[0015] A clamping portion is provided on the outer peripheral wall of the first annular connecting portion, and the clamping portion is used to fix the snake bone on the first annular connecting portion; a positioning piece is also provided on the outer peripheral wall of the first annular connecting portion, and the positioning piece is used to align the snake bone.

[0016] An endoscope comprises the tip structure described in any one of the above embodiments.

[0017] The above-mentioned tip head structure has a first accommodating cavity that runs through the tip shell along its own axis, and a limit platform is provided in the first accommodating cavity; a mounting groove is provided on the side wall of the tip shell corresponding to the first accommodating cavity; the mounting groove is connected to the first accommodating cavity and exposes the limit platform; the imaging module includes a camera module and a circuit board; the circuit board includes a main body and a mounting portion that are connected to each other; at least part of the main body is located on a side of the limit platform close to the mounting groove; the mounting portion is located on a side of the limit platform close to the far end of the tip shell and extends in a direction away from the mounting groove; the mounting portion abuts against the limit platform, and the camera module is located on a side of the mounting portion away from the limit platform. In this way, when assembling the imaging module, the abutment between the mounting portion and the limit platform in the tip shell can be used to position the imaging module, so as to control the assembly accuracy of the imaging module and improve the assembly accuracy of the imaging module, thereby improving the reliability of the tip head structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the tip structure in some embodiments of the present application.

[0019] Figure 2 for Figure 1 The schematic structural diagram of the tip structure of the tip head structure shown.

[0020] Figure 3 for Figure 1 Another structural schematic diagram of the tip structure of the tip head structure shown.

[0021] Figure 4 for Figure 1 Another structural schematic diagram of the tip structure of the tip head structure shown.

[0022] Figure 5 for Figure 1 The schematic diagram of the structure of the imaging module of the front-end structure is shown.

[0023] Description of reference numerals:

[0024] 10. Tip head structure; 11. Tip shell; 111. First accommodating cavity; 112. Limiting platform; 113. Mounting slot; 114. Second accommodating cavity; 115. Groove; 116. Third accommodating cavity; 12. Imaging module; 121. Camera module; 122. Circuit board; 1221. Main body; 1221a. First sub-section; 1221b. Second sub-section; 1221c. Bending portion; 1222. Mounting portion; 1223. Connecting portion; 1223a. Limiting portion; 123. Light source component; 13. Instrument channel tube; 14. Sensor assembly; 15. First annular connecting portion; 151. Notch; 152. Clamping portion; 1521. Guide slope; 153. Alignment component; 16. Second annular connecting portion. DETAILED DESCRIPTION

[0025] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0026] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0027] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0028] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0029] In the present application, unless specifically defined and limited otherwise, if there is a description of a first feature "on" or "under" a second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. The first feature "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0030] It should be noted that if an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0031] An imaging module is arranged in the distal head of the endoscope, and the body cavity or tissue of a human body is illuminated and observed by the imaging module. In order to ensure that the distal head of the endoscope can smoothly pass through the narrow body cavity of the human body, and at the same time reduce the harm to the patient during the operation process, the size of the distal head is usually designed to be very small, and the assembly space of the imaging module in the distal head is very limited, so it is difficult to accurately position the imaging module, so that the assembly precision of the imaging module is not easy to control, thereby affecting the reliability of the distal head.

[0032] Based on the above technical problems, the present application provides a distal head structure and an endoscope to facilitate positioning of the imaging module and improve the assembly precision of the imaging module, thereby improving the reliability of the distal head structure.

[0033] In a first aspect, with reference to Figure 1 , Figure 2 and Figure 5An embodiment of the present application provides a tip head structure 10, including a tip shell 11 and an imaging module 12; a first accommodating cavity 111 is provided in the tip shell 11, which is axially extending therethrough, and a limiting platform 112 is provided in the first accommodating cavity 111; a mounting groove 113 is provided on the side wall of the tip shell 11 corresponding to the first accommodating cavity 111; the mounting groove 113 is communicated with the first accommodating cavity 111 and exposes the limiting platform 112; the imaging module 12 is provided in the first accommodating cavity 111; the imaging module 12 includes a camera The camera module 121 and the circuit board 122; the circuit board 122 includes a main body 1221 and a mounting portion 1222 that are connected to each other; at least a portion of the main body 1221 is located on a side of the limit platform 112 close to the mounting groove 113; the mounting portion 1222 is located on a side of the limit platform 112 close to the far end of the tip shell 11, and extends in a direction away from the mounting groove 113; the mounting portion 1222 abuts against the limit platform 112; the camera module 121 is arranged on a side of the mounting portion 1222 away from the limit platform 112.

[0034] The tip head structure 10 provided in the embodiment of the present application is provided with a first accommodating cavity 111 that penetrates along its own axial direction in its tip shell 11, and a limit platform 112 is provided in the first accommodating cavity 111; a mounting groove 113 is opened on the side wall of the tip shell 11 corresponding to the first accommodating cavity 111; the mounting groove 113 is connected to the first accommodating cavity 111 and exposes the limit platform 112; the imaging module 12 includes a camera module 121 and a circuit board 122; the circuit board 122 includes a main body 1221 and a mounting portion 1222 that are connected to each other; at least a part of the main body 1221 is located on a side of the limit platform 112 close to the mounting groove 113; the mounting portion 1222 is located on a side of the limit platform 112 close to the far end of the tip shell 11, and extends in a direction away from the mounting groove 113; the mounting portion 1222 abuts against the limit platform 112, and the camera module 121 is located on a side of the mounting portion 1222 away from the limit platform 112. In this way, when assembling the imaging module 12, the mounting portion 1222 can be used to abut against the limit platform 112 in the tip shell 11 to position the imaging module 12, so as to control the assembly accuracy of the imaging module 12 and improve the assembly accuracy of the imaging module 12, thereby improving the reliability of the tip head structure 10.

[0035] It should be noted that the front housing 11 and the limiting platform 112 can be an integrally formed structure. The mounting portion 1222 and the main body 1221 can also be an integrally formed structure. In a specific example, the circuit board 122 can be a flexible circuit board 122, which is bent to form the mounting portion 1222 and the main body 1221. The camera module 121 includes a camera.

[0036] See Figure 1 and Figure 2In one embodiment, the tip head structure 10 further includes an instrument channel tube 13; a second accommodating cavity 114 is further provided in the tip shell 11, which penetrates along its own axial direction. The second accommodating cavity 114 is arranged in parallel with and communicates with the first accommodating cavity 111, and the instrument channel tube 13 is passed through the second accommodating cavity 114; the side of the limit platform 112 close to the second accommodating cavity 114 is adapted to the shape of the instrument channel tube 13.

[0037] The tip housing 11 can be manufactured by injection molding. If the first accommodating cavity 111 and the second accommodating cavity 114 are independent of each other, the sidewall thickness between the first accommodating cavity 111 and the second accommodating cavity 114 will be very small, which can easily cause collapse at the sidewall position of the first accommodating cavity 111 and the second accommodating cavity 114 during injection molding, increasing the difficulty of manufacturing the tip housing 11. In this embodiment, by connecting the first accommodating cavity 111 and the second accommodating cavity 114, that is, by eliminating the thin wall between the first accommodating cavity 111 and the second accommodating cavity 114, the manufacturing difficulty of the tip housing 11 is greatly reduced, and the manufacturing yield of the tip housing 11 is improved. In addition, by aligning the side of the limit platform 112 near the second accommodating cavity 114 with the outer shape of the instrument channel tube 13, the gap between the instrument channel tube 13 and the tip housing 11 can be easily sealed, thereby improving the sealing reliability of the tip head structure 10.

[0038] See Figure 1 and Figure 5 In one embodiment, the main body 1221 further includes a first sub-part 1221a, a second sub-part 1221b and a bent portion 1221c connecting the two; the first sub-part 1221a is located on the side of the limit platform 112 close to the mounting groove 113, and the end of the first sub-part 1221a close to the camera module 121 is connected to the mounting part 1222; the bent portion 1221c is located on the side of the limit platform 112 away from the camera module 121; the second sub-part 1221b is connected to the end of the bent portion 1221c away from the mounting groove 113.

[0039] Therefore, by making the main body 1221 also include a first sub-part 1221a, a second sub-part 1221b and a bending part 1221c connecting the two; and the first sub-part 1221a is connected to the mounting part 1222 at one end close to the camera module 121; the bending part 1221c is located on the side of the limit platform 112 away from the camera module 121; the second sub-part 1221b is connected to the end of the bending part 1221c away from the mounting groove 113, so that the second sub-part 1221b of the main body 1221 can be kept away from the side wall of the front end shell 11, thereby reducing the radial space occupied by the circuit board 122 to the front end shell 11, which is beneficial to reducing the radial size of the front end shell 11, and further beneficial to reducing the radial size of the front end head structure 10, avoiding the radial size of the front end head structure 10 being too large to cause damage to human organs and tissues.

[0040] See Figure 1 and Figure 5 In one embodiment, the first sub-portion 1221a and the second sub-portion 1221b are spaced apart along the radial direction of the front end shell 11 ; and the second sub-portion 1221b is arranged close to the center of the front end shell 11 .

[0041] In this way, the radial space occupied by the circuit board 122 on the front end shell 11 can be reduced, which is beneficial to reducing the radial size of the front end shell 11, and further beneficial to reducing the radial size of the front end head structure 10, avoiding damage to human organs and tissues caused by excessive radial size of the front end head structure 10.

[0042] See Figure 5 In one embodiment, the circuit board 122 further includes two connecting portions 1223 , which are spaced apart and connected to the mounting portion 1222 and enclosed with the mounting portion 1222 to form an installation space, and the camera module 121 is located in the installation space.

[0043] Thus, the installation of the camera module 121 can be facilitated, and the two connecting parts 1223 can limit and protect the camera module 121, thereby improving the reliability of the tip structure 10.

[0044] See Figure 5 In one embodiment, one end of the connecting portion 1223 away from the mounting portion 1222 is bent in a direction away from the mounting space to form a limiting portion 1223a; the distal end of the tip shell 11 is provided with a groove 115 connected to the first accommodating cavity 111; the limiting portion 1223a abuts against the bottom wall of the groove 115.

[0045] Therefore, the circuit board 122 can be limited by the contact between the limiting portion 1223a and the bottom wall of the groove 115, thereby improving the assembly accuracy of the imaging module 12 and the reliability of the tip structure 10.

[0046] See Figure 1 and Figure 5 In one embodiment, the imaging module 12 further includes two light source components 123, and the two light source components 123 are respectively disposed at the two limiting portions 1223a. Specifically, the light source components 123 can be LED lamps.

[0047] Therefore, the two light source elements 123 can ensure uniformity of light intensity on both sides of the camera module 121 , thereby improving the imaging effect of the camera module 121 .

[0048] See Figure 2 and Figure 3In one embodiment, a third accommodating cavity 116 is provided in the tip shell 11 and is axially penetrated therethrough. The third accommodating cavity 116 is arranged in parallel with the first accommodating cavity 111. The tip head structure 10 also includes a sensor assembly 14, which is disposed in the third accommodating cavity 116.

[0049] It is understood that the sensor assembly 14 can be a temperature sensor that can be used to measure the temperature within a body cavity. It can also be a pressure sensor that can be used to measure the pressure within a body cavity. Multiple third accommodating cavities 116 can be provided within the tip housing 11, for example, two third accommodating cavities 116, which can be designed based on the dimensions of the tip structure 10.

[0050] See Figure 1 In one embodiment, the tip head structure 10 further includes a first annular connecting portion 15 and a second annular connecting portion 16; the first annular connecting portion 15 is used to connect to the snake bone; the second annular connecting portion 16 connects the tip shell 11 and the first annular connecting portion 15; the outer diameter of the second annular connecting portion 16 is smaller than the outer diameter of the tip shell 11, and the outer diameter of the second annular connecting portion 16 is larger than the outer diameter of the first annular connecting portion 15.

[0051] In this way, the installation of the snake bone can be facilitated, and radial space can be reserved for the installation and sealing of the snake bone. The outer diameter of the snake bone connected to the tip head structure 10 and after sealing can be basically the same as the outer diameter of the tip head structure 10, so that the outer walls of the snake bone and the tip head structure 10 have a smooth transition, thereby improving the flatness of the connection position between the tip head structure 10 and the snake bone, and thus avoiding damage to human organs and tissues when entering the human body.

[0052] It should be noted that the front end housing 11 , the first annular connecting portion 15 and the second annular connecting portion 16 may be an integral injection-molded structure.

[0053] See Figure 1 and Figure 3 In one embodiment, a notch 151 is formed on the side wall of the first annular connecting portion 15 corresponding to the second accommodating cavity 114 .

[0054] Therefore, the side wall thickness corresponding to the notch 151 can be given to the instrument channel tube 13, and the distal end of the instrument channel tube 13 can be tilted toward the side of the notch 151 and then inserted into the first accommodating cavity 111. The instrument channel tube 13 can be offset toward the outside of the tip shell 11 to ensure a safe distance between the instrument channel tube 13 and the imaging module 12, thereby improving the reliability of the tip head structure 10.

[0055] See Figure 1 and Figure 4In one embodiment, a clamping portion 152 is provided on the outer peripheral wall of the first annular connecting portion 15, and the clamping portion 152 is used to fix the snake bone on the first annular connecting portion 15; a positioning piece 153 is also provided on the outer peripheral wall of the first annular connecting portion 15, and the positioning piece 153 is used to align the snake bone.

[0056] Therefore, by arranging the clamping portion 152 and the alignment member 153 on the outer peripheral wall of the first annular connecting portion 15, the alignment connection between the tip head structure 10 and the snake bone can be facilitated, thereby improving the connection stability between the tip head structure 10 and the snake bone.

[0057] For a specific example, see Figure 1 and Figure 4 The clamping portion 152 can be a columnar protrusion that fits into the clamping hole on the serpentine. A guide slope 1521 is provided at the end of the clamping portion 152 to guide the clamping portion 152 into the clamping hole. There can be multiple clamping portions 152, each spaced apart along the circumference of the first annular connecting portion 15. This not only facilitates the connection between the tip structure 10 and the serpentine, but also helps to disperse stress at the connection, thereby improving the circumferential connection stability between the tip and the serpentine.

[0058] For a specific example, see Figure 1 and Figure 4 The alignment piece 153 can be a strip-shaped protrusion, and the snake bone can be provided with a strip-shaped groove adapted to the strip-shaped protrusion. In this way, when installing the snake bone, the installer can install the snake bone according to the strip-shaped protrusion and the strip-shaped groove, which can improve the installation efficiency and installation accuracy.

[0059] In a second aspect, an embodiment of the present application provides an endoscope, comprising the tip structure 10 of any of the above embodiments, thereby improving the reliability of the endoscope.

[0060] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A tip structure, characterized in that: include: A front end housing is provided with a first accommodating cavity extending axially therethrough, wherein a limiting platform is provided in the first accommodating cavity; a mounting groove is provided on a side wall of the front end housing corresponding to the first accommodating cavity; the mounting groove is in communication with the first accommodating cavity and exposes the limiting platform; An imaging module is disposed in the first accommodating cavity; the imaging module includes a camera module and a circuit board; the circuit board includes a main body and a mounting portion that are connected to each other; at least a portion of the main body is located on a side of the limit platform close to the mounting slot; the mounting portion is located on a side of the limit platform close to the distal end of the tip shell and extends in a direction away from the mounting slot; the mounting portion abuts the limit platform; the camera module is disposed on a side of the mounting portion away from the limit platform.

2. The tip structure according to claim 1, characterized in that: The tip structure also includes an instrument channel tube; The front end housing is further provided with a second accommodating cavity which is axially extending therethrough. The second accommodating cavity is arranged in parallel with and communicates with the first accommodating cavity. The instrument channel tube is provided in the second accommodating cavity. A side of the limiting platform close to the second accommodating cavity is adapted to the outer shape of the instrument channel tube.

3. The tip structure according to claim 1, characterized in that: The main body also includes a first sub-part, a second sub-part and a bending part connecting the two; the first sub-part is located on the side of the limit platform close to the mounting slot, and the end of the first sub-part close to the camera module is connected to the mounting part; the bending part is located on the side of the limit platform away from the camera module; the second sub-part is connected to the end of the bending part away from the mounting slot.

4. The tip structure according to claim 3, characterized in that: The first sub-section and the second sub-section are spaced apart and distributed along the radial direction of the front end shell; and the second sub-section is arranged close to the center of the front end shell.

5. The tip structure according to claim 1, characterized in that: The circuit board further includes two connecting parts, which are connected to the mounting part at intervals and enclosed with the mounting part to form a mounting space, and the camera module is located in the mounting space.

6. The tip structure according to claim 5, characterized in that: One end of the connecting portion away from the mounting portion is bent in a direction away from the mounting space to form a limiting portion; The distal end of the front end shell is provided with a groove communicating with the first accommodating cavity; the limiting portion abuts against the bottom wall of the groove.

7. The tip structure according to claim 6, characterized in that: The imaging module further includes two light source components, and the two light source components are respectively arranged on the two limiting parts.

8. The tip structure according to claim 1, characterized in that: The front end housing is provided with a third accommodating cavity which is axially continuous with the front end housing and is arranged in parallel with the first accommodating cavity. The tip structure further includes a sensor assembly, and the sensor assembly is disposed in the third accommodating cavity.

9. The tip structure according to claim 2, characterized in that: The tip head structure further includes a first annular connecting portion and a second annular connecting portion; the first annular connecting portion is used to connect to the snake bone; the second annular connecting portion connects the tip shell and the first annular connecting portion; the outer diameter of the second annular connecting portion is smaller than the outer diameter of the tip shell, and the outer diameter of the second annular connecting portion is larger than the outer diameter of the first annular connecting portion; A notch is provided on the side wall of the first annular connecting portion corresponding to the second accommodating cavity; and / or, A clamping portion is provided on the outer peripheral wall of the first annular connecting portion, and the clamping portion is used to fix the snake bone on the first annular connecting portion; a positioning piece is also provided on the outer peripheral wall of the first annular connecting portion, and the positioning piece is used to align the snake bone.

10. An endoscope, characterized in that: The method comprises the tip structure according to any one of claims 1 to 9.

Images