Tip part, tip part assembly and endoscope

Abstract

The tip part comprises a tip seat and a spray head, a mounting hole is formed in the tip seat in the axial direction of the tip seat in a penetrating mode, the spray head is arranged at the far-end end of the tip seat, the tip seat is further provided with a cleaning mounting hole, a guide cavity is formed in the spray head and communicates with the cleaning mounting hole, and the cleaning mounting hole is communicated with the guide cavity. The guide cavity extends towards the direction of the mounting hole so as to form a nozzle on the spray head; the guide cavity is provided with a first side wall face and a second side wall face which are formed in the spraying direction, and the projection area of the first side wall face and the projection area of the second side wall face at least cover the projection area of the mounting hole in the spraying direction. The tip part can spray the cleaning medium to the surface of the imaging assembly mounted in the mounting hole from the nozzle under the guidance of the first side wall surface and the second side wall surface, so that cleaning is performed, and the imaging quality is improved.

Description

Technical Field

[0001] This application relates to the field of endoscope technology, specifically to an endpiece, an endpiece assembly, and an endoscope. Background Technology

[0002] An endoscope typically consists of a flexible insertion section, an operating structure connected to the proximal end of the insertion structure, and a distal end connected to the distal end of the insertion structure. The operating structure allows the insertion section to bend. The insertion section usually also includes a camera, which can extend to the end of the insertion structure. As a medical device, an endoscope can be inserted into the patient's body through natural orifices or surgical incisions to visualize lesions in relevant areas using the camera.

[0003] During the use of an endoscope, the surface of the camera at the end of the insertion structure is prone to adhering to foreign objects such as opaque body fluids or blood, making it difficult for the camera to capture clear images of the lesion or preventing it from capturing images normally, thus affecting the image quality and the examination results of the lesion. Summary of the Invention

[0004] This application aims to provide an end piece, an end piece assembly, and an endoscope, which guides cleaning medium from a nozzle to the surface of an imaging assembly mounted in a mounting hole via a first sidewall and a second sidewall, thereby further improving the imaging quality of the images acquired by the imaging assembly.

[0005] According to a first aspect of this application, this application provides an endoscope tip, comprising:

[0006] The tip seat has a mounting hole extending through it along its axial direction, the mounting hole being configured to mount an imaging component;

[0007] The nozzle is disposed at the distal end of the tip seat, the tip seat is further provided with a cleaning mounting hole configured to install a cleaning tube for providing cleaning medium; the nozzle has a guide cavity inside, the guide cavity is in communication with the cleaning mounting hole, and the guide cavity extends toward the mounting hole to form a nozzle on the nozzle.

[0008] The guide cavity has a first sidewall and a second sidewall formed along the spray direction. Along the spray direction, the projection areas of the first sidewall and the second sidewall at least cover the projection area of ​​the mounting hole. The first sidewall and the second sidewall are configured to guide the cleaning medium from the nozzle to the mounting hole.

[0009] In some embodiments, the guide cavity further has a top wall surface connected between the first side wall surface and the second side wall surface, the top wall surface being inclined along the injection direction, and the distance between the surface where the top wall surface is located and the surface where the distal end of the tip seat is located gradually decreases along the injection direction.

[0010] In some embodiments, the guide cavity further has a third sidewall, which is away from the nozzle and connects the first sidewall, the second sidewall, and the top wall; the guide cavity is further provided with a baffle, which connects the third sidewall and the top wall and extends from the third sidewall to the nozzle; the tip seat is provided with two mounting holes, and the opposite sides of the baffle form a first guide wall and a second guide wall, the first guide wall facing the first sidewall and the second guide wall facing the second sidewall, and along the spray direction, the projection areas of the first guide wall and the first sidewall and the projection areas of the second guide wall and the second sidewall respectively cover the projection areas of the two mounting holes.

[0011] In some embodiments, the nozzle is integrally formed with the tip seat. The nozzle includes a first sidewall, a second sidewall, a third sidewall, and a top wall. One end of the first sidewall, one end of the second sidewall, and one end of the third sidewall all extend from the distal end of the tip seat. The first sidewall and the second sidewall are disposed opposite to each other, and the third sidewall is connected between the first sidewall and the second sidewall. The top wall is connected to one end of the first sidewall, the second sidewall, and the third sidewall away from the distal end of the tip seat. The first sidewall, the second sidewall, the third sidewall, and the top wall form the guide cavity. The side of the first sidewall, the second sidewall, and the top wall facing the mounting hole forms the nozzle. The rib connects the top wall and the third sidewall and is located inside the guide cavity. The first sidewall surface, the second sidewall surface, the third sidewall surface, and the top wall surface are respectively formed on the inner surfaces of the first sidewall, the second sidewall, the third sidewall, and the top wall.

[0012] In some embodiments, the guide cavity has a first side near the nozzle, and the top wall surface has a second side near the nozzle. Along the axial direction of the tip end, the projection of the first side is closer to the mounting hole than the projection of the second side.

[0013] In some embodiments, the nozzle is centrally located.

[0014] In some embodiments, the cross-sectional shape of the cleaning mounting hole is non-circular along the radial direction of the tip seat.

[0015] In some embodiments, the projection area of ​​the top wall surface along the axial direction of the tip completely covers the projection area of ​​the inner diameter of the cleaning tube along the axial direction of the tip.

[0016] According to a second aspect of this application, this application provides an endoscope tip assembly, including the tip of the endoscope, and further including a mounting base, an imaging component, and a cleaning tube. The imaging component is connected to the mounting base, the mounting base is connected to the tip base and mounts the imaging component in the mounting hole, and the cleaning tube is mounted in the cleaning mounting hole.

[0017] According to a third aspect of this application, this application provides an endoscope including the tip assembly of the endoscope.

[0018] According to the above embodiments, the tip end, tip end assembly, and endoscope, since the projection areas of the first and second sidewalls formed by the guide cavity of the nozzle along the spray direction at least cover the projection area of ​​the mounting hole, the cleaning medium ejected from the nozzle can be guided onto the surface of the imaging component installed in the mounting hole to clean the surface of the imaging component from opaque body fluids, blood, adhesions, etc., adhering to the surface of the imaging component. This improves the imaging quality of the images acquired by the imaging component at the lesion site and avoids missed or misdiagnosis during subsequent diagnosis. Simultaneously, since the nozzle protrudes from the end of the tip seat to form an integral structure with the tip seat, the nozzle will not detach and cause injury during use, further improving product safety. Attached Figure Description

[0019] Figure 1 A perspective view of the tip assembly of the endoscope provided in this application;

[0020] Figure 2 A cross-sectional view of the tip assembly of the endoscope provided in this application;

[0021] Figure 3 The tip stereoscopic portion of the endoscope provided in this application Figure 1 ;

[0022] Figure 4 Cross-section of the tip of the endoscope provided in this application Figure 1 ;

[0023] Figure 5 Cross-section of the tip of the endoscope provided in this application Figure 2 ;

[0024] Figure 6 The stereoscopic view of the tip of the endoscope provided in this application Figure 2 ;

[0025] Figure 7A bottom view of the tip of the endoscope provided in this application;

[0026] Figure 8 A bottom view of the tip of the endoscope provided in this application in another embodiment;

[0027] Figure 9 A cross-sectional view of the tip of the endoscope provided in this application in another embodiment;

[0028] Figure 10 A top-view magnified view of the tip of the endoscope provided in this application.

[0029] Figure label:

[0030] The terminal assembly 100, the terminal base 10, the mounting base 20, the first imaging assembly 30, the second imaging assembly 40, the cleaning tube 50, the illumination source 60, the instrument channel tube 70, and the auxiliary water supply tube 80.

[0031] Nozzle 11, guide cavity 110, nozzle 111, first sidewall 1111, second sidewall 1112, third sidewall 1113, top wall 1114, second side edge 1115, first sidewall surface 112, second sidewall surface 113, top wall surface 114, third sidewall surface 115, partition 116, first guide wall surface 117, second guide wall surface 118, first side edge 119, first mounting hole 12, second mounting hole 13, cleaning mounting hole 14, fourth mounting hole 15, fifth mounting hole 16. Detailed Implementation

[0032] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0033] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0034] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0035] With the rapid development of science and technology and medical technology, endoscopic minimally invasive or non-invasive medical examinations and treatments have become widely popular. An endoscope is inserted into the human body through a slender insertion part through the body's natural cavities or surgical incisions, so as to collect image information of the lesion site in the human body through a camera installed at the distal end of the insertion part, in order to carry out diagnosis and treatment.

[0036] Especially when used in screening for early gastrointestinal cancers, the outer surface of the camera lens inserted into the end of the structure may be adhered to by mucous membranes or other foreign objects, affecting the image quality and thus easily leading to missed or misdiagnosed cases in the subsequent diagnostic process.

[0037] In response, some related technologies include a nozzle assembled with the insertion structure at its end. This nozzle sprays a cleaning medium (e.g., water, air, or a mixture of water and vapor) onto the camera surface to remove foreign objects and improve image quality. However, this nozzle is an independent structure and is fixed to the insertion structure via plugging or other methods, making it prone to falling off.

[0038] To address the aforementioned issues, this application provides a tip, a tip assembly, and an endoscope. A nozzle is disposed at the distal end of the tip mount. The nozzle sprays a cleaning medium onto the surface of the imaging assembly mounted in a mounting hole, preventing foreign objects from adhering to the surface of the imaging assembly during endoscope use and improving image quality. The nozzle can also inflate the examined area (e.g., esophagus, stomach, large intestine) with gas to expand the area, facilitating more comprehensive observation and treatment. Furthermore, the integrated design of the tip mount and nozzle prevents the nozzle from detaching during surgery, ensuring surgical safety.

[0039] The endoscope provided in this application includes an operating handle, an insertion section, a curved section, and a tip assembly. The insertion section is typically a slender tubular structure with a proximal end near the user and a distal end away from the user. The operating handle is connected to the proximal end of the insertion section, the curved section is connected to the distal end of the insertion section, and the tip assembly is connected to the curved section. An operating lever is provided on the operating handle; by operating the operating lever, the curved section can be bent, thereby synchronously changing the direction of the tip assembly.

[0040] See Figure 1 and Figure 2As shown, the tip assembly 100 provided in this application includes a tip base 10, a mounting base 20, an imaging assembly, and a cleaning tube 50. The tip base 10 is connected to the mounting base 20, as shown below. Figures 1-9 As shown, a nozzle 11 is provided at the distal end of the tip seat 10, such as... Figures 3-9 As shown, the terminal block 10 is also provided with a mounting hole through it along its axial direction. The imaging component is installed in the mounting hole, and the image acquisition end of the imaging component can be exposed through the mounting hole to facilitate image acquisition.

[0041] In a preferred embodiment, the tip base 10 is provided with two mounting holes, namely a first mounting hole 12 and a second mounting hole 13. Correspondingly, the tip assembly 100 includes two imaging components, namely a first imaging component 30 and a second imaging component 40. The first imaging component 30 is installed in the first mounting hole 12, and the second imaging component 40 is installed in the second mounting hole 13. The image acquisition ends of the first imaging component 30 and the second imaging component 40 are exposed through the first mounting hole 12 and the second imaging mounting hole 13, respectively. Furthermore, the distal surfaces of the first imaging component 30 and the second imaging component 40 are flush with or substantially flush with the distal end surface of the tip base 10.

[0042] The terminal block 10 is also provided with a cleaning mounting hole 14, which is configured to install a cleaning pipe 50 for providing a cleaning medium. The cleaning medium provided by the cleaning pipe 50 can be water, gas, water vapor mixture, etc., wherein the water is physiological saline.

[0043] After the endoscope is inserted into the body through a natural cavity or surgical incision, image information of the lesion site can be acquired through the first imaging component 30 and / or the second imaging component 40. The first imaging component 30 performs normal light imaging, while the second imaging component 40 performs special light or magnification imaging, improving image quality. However, during insertion, the surfaces of the ends of the first and second imaging components 30 and 40 are prone to adhering to opaque body fluids, blood, or other adhesions, preventing them from acquiring image information of the lesion site. In this embodiment, the cleaning medium provided by the cleaning tube 50 is sprayed onto the surfaces of the first and second imaging components 30 and 40 through the nozzle 11 to clean the opaque body fluids, blood, and adhesions adhering to their surfaces, ensuring image quality.

[0044] In this application, the tip assembly 100 also includes at least one illumination source 60, which is disposed at the distal end of the tip seat 10. The illumination source 60 can illuminate the lesion site, further ensuring the imaging quality of the images acquired by the first imaging assembly 30 and the second imaging assembly 40.

[0045] Based on the image information of the lesion site acquired by the first imaging component 30 and the second imaging component 40, medical staff can judge the lesion condition of the lesion site. On this basis, surgical treatment can be performed on the lesion site. Therefore, the tip assembly 100 provided in this application also includes an instrument channel tube 70. The tip seat 10 is also provided with a fourth mounting hole 15 through it along its axial direction. The instrument channel tube 70 is fixed on the mounting seat 20 and is fixed in the fourth mounting hole 15. Surgical instruments (such as forceps, hemostatic clips, etc.) can be passed through the instrument channel tube 70 to treat the lesion site of the patient accordingly.

[0046] In practical applications, there may be situations where bodily fluids or other substances at the lesion site affect the imaging of the lesion site. Therefore, it is necessary to clean the bodily fluids or bleeding at the lesion site. Thus, the tip assembly 100 provided in this application also includes a secondary water supply pipe 80. The tip seat 10 is also provided with a fifth mounting hole 16 through it along its axial direction. The secondary water supply pipe 80 passes through the mounting seat 20 and is fixed in the fifth mounting hole 16. The secondary water supply pipe 80 can spray a cleaning medium to rinse the bodily fluids or blood at the lesion site that affect the imaging quality. The cleaning medium sprayed by the secondary water supply pipe 80 can be the same as the cleaning medium sprayed by the nozzle 11, for example, both are physiological saline.

[0047] The following embodiments describe the structure of the tip end 10, and the example is that the tip end 10 is provided with two mounting holes (first mounting hole 12 and second mounting hole 13).

[0048] See Figures 1-7 As shown, the endoscope provided in this embodiment includes an end base 10 and a nozzle 11 at its tip. The nozzle 11 is disposed at the distal end of the end base 10. The end base 10 is provided with a mounting hole through it in the axial direction. The mounting hole is configured to install an imaging component. The imaging component is usually fixedly mounted on the mounting base 20. After the end base 10 is connected to the mounting base 20, the imaging component can be fixedly inserted in the mounting hole and exposed through the mounting hole.

[0049] In this application, the tip base 10 has two mounting holes extending through its axial direction, namely a first mounting hole 12 and a second mounting hole 13. The first mounting hole 12 is configured to mount the first imaging component 30, and the second mounting hole 13 is configured to mount the second imaging component 40. Both the first imaging component 30 and the second imaging component 40 are fixedly mounted on the mounting base 20. The first imaging component 30 and the second imaging component 40 are respectively inserted and fixed in the first mounting hole 12 and the second mounting hole 13, so as to be exposed through the first mounting hole 12 and the second mounting hole 13 respectively, and to ensure that the surface of the image acquisition end of the first imaging component 30 and the surface of the image acquisition end of the second imaging component 40 are flush or substantially flush with the distal end surface of the tip base 10.

[0050] The terminal block 10 is also provided with a cleaning mounting hole 14, which is configured to install a cleaning pipe 50 for providing cleaning media, such as... Figure 2 and Figure 5 As shown, the nozzle 11 has a guide cavity 110 inside. The cleaning mounting hole 14 is connected to the guide cavity 110, which can indirectly connect the cleaning tube 50 to the guide cavity 110. The guide cavity 110 is connected to the cleaning mounting hole 14. The guide cavity 110 extends in the direction of the first mounting hole 12 and the second mounting hole 13 to form a nozzle 111 in the nozzle 11. The nozzle 111 is connected to the cleaning mounting hole 14 through the guide cavity 110. The nozzle 111 is oriented towards the first mounting hole 12 and the second mounting hole 13. The nozzle 111 can be considered to be formed on the nozzle 11 by the guide cavity 110 extending in the direction of the first mounting hole 12 and the second mounting hole 13.

[0051] like Figure 4 , Figure 7 and Figure 8 As shown, the guide cavity 110 has a first sidewall 112 and a second sidewall 113 formed along the spray direction, wherein the spray direction is the direction in which the cleaning medium is ejected from the nozzle 111. Along the spray direction, the projection areas of the first sidewall 112 and the second sidewall 113 at least cover the projection areas of the first mounting hole 12 and the second mounting hole 13. In other words, the extension surfaces of the surfaces containing the first sidewall 112 and the second sidewall 113 cover the first mounting hole 12 and the second mounting hole 13. The first sidewall 112 and the second sidewall 113 are configured to guide the cleaning medium from the nozzle 111 towards the first mounting hole 12 and the second mounting hole 13, so that the ejected cleaning medium is sprayed onto the surface of the first imaging component 30 mounted in the first mounting hole 12 and the surface of the second imaging component 40 mounted in the second mounting hole 13, thereby cleaning the surface of the first imaging component 30 and the surface of the second imaging component 40.

[0052] In the above embodiment, since the extension surfaces of the first sidewall 112 and the second sidewall 113 of the guide cavity 110 of the nozzle 11 along the spray direction cover the first mounting hole 12 and the second mounting hole 13, the cleaning medium sprayed from the nozzle 111 is guided to spray onto the surface of the first imaging component 30 installed in the first mounting hole 12 and the surface of the second imaging component 40 installed in the second mounting hole 13, so as to clean the opaque body fluid or blood, adhesions, etc. adhering to the surface of the first imaging component 30 and the second imaging component 40, thereby improving the imaging quality of the images acquired by the first imaging component 30 and the second imaging component 40 of the lesion site and avoiding missed diagnosis or misdiagnosis in the subsequent diagnosis process.

[0053] In this embodiment, the tip seat 10 and the nozzle 11 are integrally formed. It can be considered that the nozzle 11 protrudes from the end of the tip seat 10 to form an integral structure with it. During use, the nozzle 11 will not detach and cause injury due to excessive flow velocity of the cleaning medium, further improving product safety.

[0054] In one embodiment of this application, the extended surface of the first sidewall 112 can be considered parallel to the extended surface of the second sidewall 113. However, in this case, a larger guide cavity 110 is required, resulting in the nozzle 11 occupying a larger space at the distal end of the tip seat 10, making it difficult to miniaturize the product. Therefore, in this embodiment, the distance between the extended surfaces of the first sidewall 112 and the second sidewall 113 gradually increases along the spraying direction. While ensuring that the extended surfaces of the first sidewall 112 and the second sidewall 113 cover the first mounting hole 12 and the second mounting hole 13 to guide the cleaning medium sprayed from the nozzle 111 onto the surface of the first imaging component 30 and the surface of the second imaging component 40, the volume of the guide cavity 110 can be significantly reduced, thereby reducing the volume of the nozzle 11 and making the structure of the tip seat 10 more compact. A tip seat 10 with a smaller radial dimension can be provided.

[0055] In a preferred embodiment, along the spraying direction, the angle between the extended surface of the first sidewall 112 and the extended surface of the second sidewall 113 is 90°-135°. For example, the angle can be 90°, 100°, 110°, 120°, 125°, 130°, or 135°. It is understood that the angle is related to the space occupied by the first mounting hole 12 and the second mounting hole 13 at the distal end of the tip seat 11. It should also be understood that a larger angle results in a smaller volume of the guide cavity 110, and consequently a smaller nozzle 11, and a smaller overall volume of the formed tip seat 10 with the nozzle 11, while ensuring that the cleaning medium sprayed through the nozzle 111 completely covers the surfaces of the first imaging component 30 installed in the first mounting hole 12 and the second imaging component 40 installed in the second mounting hole 13. In this embodiment, the angle is preferably any one of 125°, 130°, or 135°.

[0056] like Figure 2 and Figure 5 As shown, the guide cavity 110 also has a top wall surface 114 connecting the first side wall surface 112 and the second side wall surface 113. The top wall surface 114 is inclined along the spray direction, and the distance between the surface of the top wall surface 114 and the surface of the distal end of the tip seat 10 gradually decreases along the spray direction. This further ensures that the cleaning medium ejected from the nozzle 110 is sprayed onto the surface of the first imaging component 30 installed in the first mounting hole 12 and the surface of the second imaging component 40 installed in the second mounting hole 13. At the same time, since the distance between the surface of the top wall surface 114 and the surface of the distal end of the tip seat 10 gradually decreases along the spray direction, the guide cavity 110 is formed into an approximately flat shape along the spray direction. According to the principle of fluid dynamics, under the same flow rate, the space through which the cleaning medium passes is smaller, which forces the cleaning medium to increase its flow velocity and be ejected from the nozzle 111 at a faster speed. In this way, the cleaning effect of the cleaning medium on the surface of the first imaging component 30 and the surface of the second imaging component 40 can be improved.

[0057] In a preferred embodiment, both the extended surface of the top wall surface 114 and the extended surface of the distal end of the tip seat 10 are planar. Furthermore, the angle between the extended surface of the top wall surface 114 and the distal end of the tip seat 10 is 0.5°-5°. In other embodiments, the angle can be 1°, 1.5°, 2°, 3°, 4°, 5°, etc., depending on actual needs. A larger angle results in a higher flow rate of the cleaning medium ejected from the nozzle 111, leading to better cleaning performance. In this embodiment, the angle between the extended surface of the top wall surface 114 and the distal end of the tip seat 10 can be 4°, 4.5°, or 5°, significantly increasing the flow rate of the cleaning medium ejected from the nozzle 111.

[0058] See Figure 2 , Figure 4 , Figure 5 as well as Figures 7-9 As shown, the guide cavity 110 also has a third side wall 115, which is located away from the nozzle 111 and connects the first side wall 112, the second side wall 113, and the top wall 114. It can be understood that the third side wall 115 is positioned opposite to the nozzle 111, and the first side wall 112, the second side wall 113, the third side wall 115, and the top wall 114 form the guide cavity 110. Figure 8 and Figure 9 As shown, in another embodiment of this application, the guide cavity 110 is further provided with a baffle 116, which connects the third side wall 115 and the top wall 114 and extends from the third side wall 115 to the nozzle 111. The baffle 116 allows the cleaning medium ejected from the nozzle 111 to be divided into two paths, which are respectively sprayed onto the surface of the first imaging component 30 installed in the first mounting hole 112 and the surface of the second imaging component 40 installed in the second mounting hole 113.

[0059] The ribs 116 form a first guide wall 117 and a second guide wall 118 on opposite sides. The first guide wall 117 faces the first side wall 112. Along the spraying direction, the projection areas of the first guide wall 117 and the first side wall 112 at least cover the projection area of ​​the first mounting hole 12, such that the extension surfaces of the surfaces where the first guide wall 117 and the first side wall 112 are located cover the first mounting hole 12. The cleaning medium in the space between the first guide wall 117 and the first side wall 112 forms a first cleaning medium, which is sprayed from the nozzle 111 onto the surface of the first imaging component 30 installed in the first mounting hole 112 under the guidance of the first guide wall 117 and the first side wall 112. The second guide wall 118 faces the second side wall 113. Along the spraying direction, the projection areas of the second guide wall 118 and the second side wall 113 at least cover the projection area of ​​the second mounting hole 13, such that the extension surfaces of the surfaces where the second guide wall 118 and the second side wall 113 are located cover the second mounting hole 13. The cleaning medium passing through the gap between the second guide wall 118 and the second side wall 113 forms a second cleaning medium, which, guided by the second guide wall 118 and the second side wall 113, is sprayed from the nozzle 111 onto the surface of the second imaging component 40 installed in the second mounting hole 113. This ensures that the two cleaning medium paths formed by the partition 116 are sprayed onto the surfaces of the first imaging component 30 installed in the first mounting hole 112 and the second imaging component 40 installed in the second mounting hole 113.

[0060] In one embodiment of this application, the distance between the extended surfaces of the first sidewall 112 and the first guide wall 117, and the distance between the extended surfaces of the second sidewall 113 and the second guide wall 118, gradually increase along the spraying direction. It can be assumed that the angle between the extended surfaces of the first sidewall 112 and the first guide wall 117 is the same as the angle between the extended surfaces of the second sidewall 113 and the second guide wall 118. In a preferred embodiment, this angle can be 45°-67.5°, for example, 45°, 50°, 55°, 60°, 65°, 67.5°, etc. Similarly, it is easy to understand that a larger angle, while ensuring coverage of the first mounting hole 12 and the second mounting hole 13, can also reduce the volume of the nozzle 11, thereby reducing the overall volume of the tip seat 10.

[0061] See Figure 3As shown, the nozzle 11 includes a first sidewall 1111, a second sidewall 1112, a third sidewall 1113, and a top wall 1114. One end of the first sidewall 1111, one end of the second sidewall 1112, and one end of the third sidewall 1113 all extend from the distal end of the tip seat 10. The first sidewall 1111 and the second sidewall 1112 are disposed opposite to each other, and the third sidewall 1113 is connected between the first sidewall 1111 and the second sidewall 1112. The top wall 1114 is connected to one end of the first side wall 1111, the second side wall 1112, and the third side wall 1113 away from the distal end of the tip seat 10. The first side wall 1111, the second side wall 1112, the third side wall 1113, and the top wall 1114 form a guide cavity 110. The side of the first side wall 1111, the second side wall 1112, and the top wall 1114 facing the first mounting hole 12 and the second mounting hole 13 forms a nozzle 111. Figure 9 As shown, the rib 116 connects the top wall 1114 and the third side wall 1113 and is located inside the guide cavity 110. The first side wall surface 112, the second side wall surface 113, the third side wall surface 115, and the top wall surface 114 are respectively formed on the inner surfaces of the first side wall 1111, the second side wall 1112, the third side wall 1113, and the top wall 1114.

[0062] See Figure 2 , Figure 3 , Figure 5 as well as Figure 10 As shown, the guide cavity 110 has a first side 119 near the nozzle 111, and the top wall surface 114 has a second side 1115 near the nozzle 111. Along the axial direction of the tip end 10, the projection of the first side 119 is closer to the mounting hole (first mounting hole 12 and second mounting hole 13) than the projection of the second side 1115, making the top wall surface 114 inclined. Since the tip end 10 and the nozzle 11 are integrally formed, for example, by injection molding, the front and rear molds can be formed by interlocking during the injection molding stage, which is more conducive to demolding and product manufacturing.

[0063] like Figure 1 , Figure 3 , Figure 4 and Figures 6-9As shown, the nozzle 11 is centered relative to the center line of the first mounting hole 12 and the second mounting hole 13. In some embodiments, the distance between the nozzle 11 and the first mounting hole 12 and the distance between the nozzle 11 and the second mounting hole 13 can be considered to be approximately equal. It should be understood that the end seat 10 is basically cylindrical in shape, and the first mounting hole 12 and the second mounting hole 13 are located on both sides of the center of the end seat 10 and are symmetrically arranged. Placing the nozzle 11 in the space remaining on the end seat 10 where the first mounting hole 12 and the second mounting hole 13 are located is equivalent to placing the cleaning mounting hole 14 on one side of the line connecting the centers of the first mounting hole 12 and the second mounting hole 13, and placing the fourth mounting hole 15 and the fifth mounting hole 16 on the other side of the line connecting the centers of the first mounting hole 12 and the second mounting hole 13.

[0064] In this application, the cross-sectional shape of the cleaning mounting hole 14 along the radial direction of the tip seat 10 is non-circular (e.g., elliptical), and the cleaning tube 50 is made of soft tube, which allows the cleaning tube 50 to deform according to the shape of the cleaning mounting hole 14 and completely fit the cleaning mounting hole 14. The cleaning tube 50 is glued and fixed in the cleaning mounting hole 14, which can significantly improve the connection firmness and improve the sealing performance.

[0065] Of course, in other embodiments, the cross-sectional shape of the cleaning mounting hole 14 can also be other non-circular shapes, such as rectangular, triangular or other shapes.

[0066] In this embodiment, the projection area of ​​the top wall surface 114 along the axial direction of the tip end 10 completely covers the projection area of ​​the inner diameter of the cleaning pipe 50 along the axial direction of the tip end 10, so that the cleaning medium drawn from the cleaning pipe 50 can completely enter the guide cavity 110, so as to guide the cleaning medium to rush to the top wall surface 114 and spray it towards the nozzle 111 under the guidance of the top wall surface 114.

[0067] In summary, the tip end, tip end assembly, and endoscope provided in this application, because the projection areas of the first and second sidewalls formed by the guide cavity of the nozzle along the spray direction at least cover the projection area of ​​the mounting hole, can guide the cleaning medium ejected from the nozzle to be sprayed onto the surface of the imaging component installed in the mounting hole through the first and second sidewalls. This cleans the surface of the imaging component of opaque body fluids, blood, adhesions, etc., improving the imaging quality of the images acquired by the imaging component of the lesion site and avoiding missed or misdiagnosed diagnoses in subsequent diagnostic processes. Furthermore, because the nozzle protrudes from the end of the tip end seat to form an integral structure with the tip end seat, the nozzle will not detach and cause injury during use, further improving the safety of product use.

[0068] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. The tip of an endoscope, characterized in that, include: The tip seat has a mounting hole extending through it along its axial direction, the mounting hole being configured to mount an imaging component; The nozzle is disposed at the distal end of the tip seat, the tip seat is further provided with a cleaning mounting hole configured to install a cleaning tube for providing cleaning medium; the nozzle has a guide cavity inside, the guide cavity is in communication with the cleaning mounting hole, and the guide cavity extends toward the mounting hole to form a nozzle on the nozzle. The guide cavity has a first sidewall and a second sidewall formed along the spray direction. Along the spray direction, the projection areas of the first sidewall and the second sidewall at least cover the projection area of ​​the mounting hole. The first sidewall and the second sidewall are configured to guide the cleaning medium from the nozzle to the mounting hole.

2. The tip of the endoscope as described in claim 1, characterized in that, The guide cavity also has a top wall surface connected between the first side wall surface and the second side wall surface. The top wall surface is inclined along the injection direction, and the distance between the surface where the top wall surface is located and the surface where the distal end of the tip seat is located gradually decreases along the injection direction.

3. The tip of the endoscope as described in claim 2, characterized in that, The guide cavity also has a third side wall, which is away from the nozzle and connects the first side wall, the second side wall, and the top wall. The guide cavity also has a baffle connecting the third side wall and the top wall, extending from the third side wall towards the nozzle. The tip seat has two mounting holes. The opposing sides of the baffle form a first guide wall and a second guide wall, with the first guide wall facing the first side wall and the second guide wall facing the second side wall. Along the spray direction, the projection areas of the first guide wall and the first side wall, and the projection areas of the second guide wall and the second side wall, respectively cover the projection areas of at least two of the mounting holes.

4. The tip of the endoscope as described in claim 3, characterized in that, The nozzle is integrally formed with the tip seat. The nozzle includes a first sidewall, a second sidewall, a third sidewall, and a top wall. One end of the first sidewall, one end of the second sidewall, and one end of the third sidewall all extend from the distal end of the tip seat. The first sidewall and the second sidewall are disposed opposite to each other, and the third sidewall is connected between the first sidewall and the second sidewall. The top wall is connected to one end of the first sidewall, the second sidewall, and the third sidewall away from the distal end of the tip seat. The first sidewall, the second sidewall, the third sidewall, and the top wall form the guide cavity. The side of the first sidewall, the second sidewall, and the top wall facing the mounting hole forms the nozzle. The rib connects the top wall and the third sidewall and is located inside the guide cavity. The first sidewall surface, the second sidewall surface, the third sidewall surface, and the top wall surface are respectively formed on the inner surfaces of the first sidewall, the second sidewall, the third sidewall, and the top wall.

5. The tip of the endoscope as described in claim 2, characterized in that, The guide cavity has a first side near the nozzle, and the top wall has a second side near the nozzle. Along the axial direction of the tip end, the projection of the first side is closer to the mounting hole than the projection of the second side.

6. The tip of the endoscope as described in claim 1, characterized in that, The nozzle is centered.

7. The tip of the endoscope as described in claim 1, characterized in that, Along the radial direction of the tip seat, the cross-sectional shape of the cleaning mounting hole is non-circular.

8. The tip of the endoscope as described in claim 2, characterized in that, The projection area of ​​the top wall surface along the axial direction of the tip completely covers the projection area of ​​the inner hole of the cleaning tube along the axial direction of the tip.

9. An endoscope tip assembly, characterized in that, The endoscope includes the tip end of any one of claims 1-8, and further includes a mounting base, an imaging assembly, and a cleaning tube, wherein the imaging assembly is connected to the mounting base, the mounting base is connected to the tip end seat, and the imaging assembly is mounted in the mounting hole, and the cleaning tube is mounted in the cleaning mounting hole.

10. An endoscope, characterized in that, Includes the tip assembly of the endoscope as described in claim 9.

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