Endoscope tip assembly and endoscope

Abstract

An endoscope tip assembly and an endoscope, the endoscope tip assembly comprising: a tip seat, the tip seat comprising a nozzle mounting hole, a first mounting hole, and a second mounting hole, the first mounting hole and the second mounting hole being adjacently arranged, the nozzle mounting hole being located between the first mounting hole and the second mounting hole, and the center lines of the nozzle mounting hole, the first mounting hole, and the second mounting hole forming a triangle; a nozzle being mounted in the nozzle mounting hole, a first imaging assembly being mounted in the first mounting hole, and a second imaging assembly being mounted in the second mounting hole; a distal end of the nozzle being provided with a jet portion protruding from a distal end surface of the tip seat, the jet portion being located between the first imaging assembly and the second imaging assembly, the jet portion having a jet opening, a jet area of the jet opening covering at least the first imaging assembly and the second imaging assembly, and the jet area of the jet opening being an area covered by fluid jetted out of the jet opening. This is advantageous for reducing the number of components and reducing the outer diameter of the tip seat.

Description

Technical Field

[0001] The present application relates to the technical field of endoscopes, and in particular to an endoscope tip assembly and an endoscope. Background Art

[0002] An endoscope is a medical device that includes a slender insertion tube that can enter the human body through a natural channel or surgical incision to deliver an imaging component into the body for comprehensive examination or treatment of internal organs. The tip assembly of the endoscope includes an imaging component and a nozzle. The imaging component and the nozzle can be mounted on the tip seat. The nozzle can spray water or air onto the outer surface of the lens of the imaging component to flush out foreign matter adhering to it. In order to facilitate the rapid and accurate detection of abnormal lesions, two imaging components with different functions need to be installed on the tip seat of the endoscope. When there are two imaging components, two nozzles are usually required, one nozzle for cleaning each imaging component, thereby increasing the outer diameter of the tip seat. Summary of the Invention

[0003] The present application provides an endoscope tip assembly and an endoscope, which can solve the problem of a large outer diameter of the tip seat.

[0004] According to one aspect of the present application, an embodiment provides an endoscope tip assembly, including: a tip seat, the tip seat including a nozzle mounting hole, a first mounting hole, and a second mounting hole, the first mounting hole and the second mounting hole are adjacently arranged, the nozzle mounting hole is located between the first mounting hole and the second mounting hole, and the center line of the nozzle mounting hole, the first mounting hole, and the second mounting hole is triangular; a nozzle is installed in the nozzle mounting hole, a first imaging assembly is installed in the first mounting hole, and a second imaging assembly is installed in the second mounting hole; the distal end of the nozzle is provided with a spray portion protruding from the distal end surface of the tip seat, the spray portion has a spray port, the spray area of ​​the spray port covers at least the first imaging assembly and the second imaging assembly, and the spray area of ​​the spray port is the area covered by the fluid sprayed from the spray port.

[0005] In one embodiment, the ejection portion is provided with a first ejection port and a second ejection port, the ejection area of ​​the first ejection port at least covers the first imaging component, and the ejection area of ​​the second ejection port at least covers the second imaging component.

[0006] In one embodiment, the nozzle includes a tube body, which is inserted into the nozzle mounting hole and fixedly connected to the tip seat, the injection portion is provided at the distal end of the tube body, and the proximal end of the tube body is used to connect with the water and gas pipe, the injection portion is provided with a first injection channel that is perpendicular to and connected to the inner hole of the tube body, and the first injection port and the second injection port are provided on the side wall of the injection portion close to the imaging component, and the first injection port and the second injection port are both connected to the first injection channel.

[0007] In one embodiment, a guide surface is provided in the nozzle, and the guide surface is located at the portion where the first injection channel is connected to the inner hole of the tube body, and is used to guide the fluid from the inner hole of the tube body to the first injection channel. The guide surface is an inclined surface or an arc surface.

[0008] In one embodiment, the tube body and the injection portion are an integral structure, the outer side wall of the tube body is provided with a raised limiting portion, the hole wall of the nozzle mounting hole is provided with a limiting step, and the limiting portion and the limiting step cooperate to form an axial limit of the nozzle.

[0009] In one embodiment, the nozzle has an extension portion extending between the first mounting hole and the second mounting hole, the injection portion is provided on the extension portion, and the first injection port and the second injection port are located on side walls on opposite sides of the injection portion.

[0010] In one embodiment, a groove is provided on the distal end surface of the tip seat, and the groove extends from the nozzle mounting hole to between the first mounting hole and the second mounting hole, and the extension portion is engaged in the groove. The nozzle is provided with a second injection channel perpendicular to the axis of the nozzle mounting hole, and the injection portion is a hollow structure. The second injection channel is connected to the first injection port and the second injection port through the hollow structure.

[0011] In one embodiment, the tip seat is provided with a positioning step, a portion of the positioning step is located on the hole wall of the nozzle mounting hole, and the other portion is located on the groove wall of the groove, the proximal end face of the nozzle is fixedly connected to the positioning step, the second injection channel is connected to the nozzle mounting hole, and the proximal end of the nozzle mounting hole is used to connect with the water and gas pipe.

[0012] In one embodiment, on the cross section of the tip component, the line between the center of the cross section corresponding to the nozzle mounting hole and the center of the cross section corresponding to the first mounting hole is the first line, and the line between the center of the cross section corresponding to the nozzle mounting hole and the center of the cross section corresponding to the second mounting hole is the second line. The lengths of the first line and the second line are equal, and the cross section is a cross section perpendicular to the axial direction of the tip component.

[0013] According to another aspect of the present application, an endoscope is provided in one embodiment, including a water-air tube and the endoscope tip assembly as described above, wherein the water-air tube is connected to the tip assembly and is used to provide cleaning fluid to the nozzle.

[0014] According to the endoscope tip assembly and endoscope of the above-mentioned embodiment, the nozzle mounting hole is located between the first mounting hole and the second mounting hole, and the spraying area of ​​the nozzle covers the first imaging assembly and the second imaging assembly, so that the nozzle can clean the first imaging assembly and the second imaging assembly at the same time, without setting two nozzles, which is beneficial to reducing the number of parts and reducing the outer diameter of the tip seat. Moreover, the nozzle mounting hole is located between the two imaging assemblies, which is not only compact in structure, but also has a good effect on cleaning the two imaging assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of an endoscope tip assembly according to an embodiment;

[0016] Figure 2 This is a schematic structural diagram of an end seat according to an embodiment;

[0017] Figure 3 A schematic structural diagram of a spraying area according to an embodiment;

[0018] Figure 4 This is a schematic structural diagram of a first injection port and a second injection port according to an embodiment;

[0019] Figure 5 A schematic cross-sectional view of a nozzle including a tube body according to an embodiment;

[0020] Figure 6 A schematic structural diagram of a nozzle including an extension portion according to an embodiment;

[0021] Figure 7 Another structural schematic diagram of the injection area of ​​an embodiment;

[0022] Figure 8 This is a schematic diagram of the exploded structure of a front-end component portion of an embodiment;

[0023] Figure 9 A schematic cross-sectional view of the connection between the water and gas pipe and the tip end seat according to an embodiment;

[0024] Figure 10 A schematic diagram of another cross-sectional structure of a nozzle including a tube body according to an embodiment;

[0025] Figure 11 is another structural schematic diagram of an endoscope tip assembly according to one embodiment;

[0026] Figure 12This is a schematic structural diagram of a connecting groove according to an embodiment;

[0027] Figure 13 is a schematic structural diagram of an endoscope according to an embodiment;

[0028] Description of reference numerals:

[0029] 1-tip seat, 101-first mounting hole, 102-second mounting hole, 103-nozzle mounting hole, 104-groove, 105-positioning step, 106-connecting groove; 2-first imaging assembly; 3-second imaging assembly; 4-nozzle, 401-injection area, 402-first injection port, 403-second injection port, 404-tube body, 405-injection part, 406-first injection channel, 407-limiting part, 408-guide surface, 409-extension part, 410-second injection channel; 5-water and gas pipe; 6-tip assembly; 7-insertion tube; 8-handle. DETAILED DESCRIPTION

[0030] The present application is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0031] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0032] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0033] See also Figures 1 to 12An embodiment of the present application provides an endoscope tip assembly, including a tip seat 1, a nozzle 4, a first imaging assembly 2, a second imaging assembly 3, and other functional components that exist as needed, which are described in detail below.

[0034] like Figure 1 、 Figure 2 As shown, the tip seat 1 in this embodiment includes a nozzle mounting hole 103, a first mounting hole 101, and a second mounting hole 102. The first mounting hole 101 and the second mounting hole 102 are adjacent to each other, and the nozzle mounting hole 103 is located between the first mounting hole 101 and the second mounting hole 102, and the center line of the nozzle mounting hole 103, the first mounting hole 101, and the second mounting hole 102 is a triangle; the nozzle 4 is installed in the nozzle mounting hole 103, the first imaging component 2 is installed in the first mounting hole 101, and the second imaging component 3 is installed in the second mounting hole 102; the distal end of the nozzle 4 is provided with a spray portion 405 protruding from the distal end surface of the tip seat 1, and the spray portion 405 has a spray port, and the spray area 401 of the spray port covers at least the first imaging component 2 and the second imaging component 3, and the spray area 401 of the spray port is the area covered by the fluid sprayed from the spray port.

[0035] It will be understood that the nozzle mounting hole 103 in this embodiment is located between the first mounting hole 101 and the second mounting hole 102. That is, the perpendicular projection of the center of the nozzle mounting hole 103 onto a line passing through the centers of the first and second mounting holes 101, 102 is located between the first and second mounting holes 101, 102. The center positions in this embodiment are all on the cross-section of the tip assembly: the center of the cross-section corresponding to the nozzle mounting hole 103, the center of the cross-section corresponding to the first mounting hole 101, and the center of the cross-section corresponding to the second mounting hole 102. The cross-section of the tip assembly in this embodiment can be the distal end surface of the tip base 1 or another cross-section perpendicular to the axis of the tip assembly. In this embodiment, the nozzle mounting hole 103 is located between the first and second mounting holes 101, 102, and the line connecting the centers of the nozzle mounting hole 103, the first mounting hole 101, and the second mounting hole 102 forms a triangle. This structure is more compact and can reduce the outer diameter of the tip base 1. In this embodiment, the jet portion 405 of the nozzle 4 is located between the first imaging assembly 2 and the second imaging assembly 3. This allows the jet port to be relatively close to both the first imaging assembly 2 and the second imaging assembly 3, with a small difference in distance. This ensures that the water or air flow sprayed from the jet port onto the outer surfaces of the lenses of the first imaging assembly 2 and the second imaging assembly 3 has sufficiently high pressure, and the nozzle 4 effectively cleans the lenses of both the first imaging assembly 2 and the second imaging assembly 3. In this embodiment, the jet port's jet area 401 covers both the first imaging assembly 2 and the second imaging assembly 3, allowing the nozzle 4 to clean both the first imaging assembly 2 and the second imaging assembly 3 simultaneously. This eliminates the need for two nozzles 4, which helps reduce the number of components and the outer diameter of the tip base 1.

[0036] In some embodiments, the shapes of the first mounting hole 101 and the second mounting hole 102 can match the outer contour shape of the corresponding imaging component. For example, when the outer contour of the imaging component is circular, the corresponding mounting hole can also be a circular hole. This embodiment does not limit the specific connection method between the first imaging component 2, the second imaging component 3 and the tip seat 1, and they can be connected by but not limited to bonding. The tip seat 1 in this embodiment can be made of metal or plastic. The tip seat 1 in this embodiment can be an integral structure or a combination of components. The injection portion 405 in this embodiment protrudes from the distal end surface of the tip seat 1, which can facilitate the nozzle 4 to clean the outer surface of the lens of the imaging component. The first imaging component 2 and the second imaging component 3 in this embodiment can have different functions. For example, one can be imaging with normal light and the other can be imaging with special light, or one can be imaging with normal magnification and the other can be imaging with magnification.

[0037] In one embodiment, the injection portion 405 is provided with a first injection port 402 and a second injection port 403. The injection area 401 of the first injection port 402 at least covers the first imaging component 2, and the injection area 401 of the second injection port 403 at least covers the second imaging component 3. When one injection port corresponds to cleaning one imaging component, the water flow or air flow ejected from the injection port may have a greater pressure, which has a better cleaning effect on the imaging component. The width of the outer side of the first injection port 402 and the second injection port 403 determines the injection area 401 of the first injection port 402. In this embodiment, the width of the outer side of the first injection port 402 and the second injection port 403 may enable the injection area 401 to just cover the imaging component, or may also enable the injection area 401 to cover the imaging component and the peripheral part of the imaging component. In some application scenarios, in order to form a better area definition, the two opposite side walls of the first injection port 402 and the two opposite side walls of the second injection port 403 may both be set as outwardly inclined slopes. In some embodiments, such as Figure 3 As shown, the spraying portion 405 may also be provided with only one spraying port, the width of the outer side of the spraying port being large enough, and the spraying area 401 thereof can cover the first imaging component 2 and the second imaging component 3 at the same time.

[0038] In one embodiment, Figure 4 、 Figure 5As shown, the nozzle 4 includes a tube body 404, which is inserted into the nozzle mounting hole 103 and fixedly connected to the tip base 1. A spray portion 405 is located at the distal end of the tube body 404. The proximal end of the tube body 404 is used to connect to the water and air pipe 5. The spray portion 405 is provided with a first spray channel 406 that is perpendicular to and connected to the inner hole of the tube body 404. A first spray port 402 and a second spray port 403 are provided on the sidewall of the spray portion 405 on the side closest to the imaging assembly. Both the first spray port 402 and the second spray port 403 are connected to the first spray channel 406. When the first spray port 402 and the second spray port 403 are located on the same side of the spray portion 405, the pressure attenuation of the water or air flow ejected from the spray ports is reduced, and the spraying effect of the nozzle 4 is improved. When the nozzle 4 is installed, the outer periphery of the tube body 404 can be bonded to the wall of the nozzle mounting hole 103 to achieve a more airtight connection. In this embodiment, the proximal end is the end closest to the endoscope handle, and the distal end is the end away from the handle. The first injection channel 406 is perpendicular to the inner hole of the tube body 404, which means that the axis of the first injection channel 406 is perpendicular to the axis of the inner hole of the tube body 404. In some embodiments, the first injection channel 406 may be approximately perpendicular to the inner hole of the tube body 404, which is an equivalent replacement for the first injection channel 406 being perpendicular to the inner hole of the tube body 404.

[0039] In one embodiment, Figure 5 As shown, nozzle 4 is provided with a guide surface 408 located at the junction of first injection channel 406 and the inner bore of tube body 404. Guide surface 408 is configured as an inclined or curved surface to guide fluid from the inner bore of tube body 404 into first injection channel 406. Guide surface 408 facilitates smoother redirection of water or air flow, minimizing the reduction in flow velocity caused by redirection, thereby enhancing the spraying effect of nozzle 4. In some embodiments, an inclined transition section may be provided between first injection channel 406 and the inner bore of tube body 404.

[0040] In one embodiment, Figure 5As shown, the tube body 404 and the ejection portion 405 are integrally structured. A raised stopper 407 is provided on the outer wall of the tube body 404, and a stopper step is provided on the wall of the nozzle mounting hole 103. The stopper 407 and the stopper step cooperate to provide axial positioning of the nozzle 4. The tube body 404 and the ejection portion 405 can be integrally formed by injection molding. This integrated structure offers improved processing efficiency and airtightness, preventing leakage of high-pressure liquid or gas. It also prevents liquid from leaking into live components such as the imaging assembly and lighting assembly, which could cause a short circuit and pose a safety risk. In this embodiment, the stopper 407 cooperates with the stopper step to provide axial positioning of the nozzle 4, ensuring a more precise projection height of the ejection portion 405. This prevents the water or air flow from being unable to reach the outer surface of the imaging assembly lens due to the ejection port being too high or too low. The specific shape of the stopper 407 is not limited in this embodiment; it can be formed on the outer wall of the tube body 404. For example, it can be a square protrusion or an annular flange structure.

[0041] In one embodiment, Figures 6-9 As shown, the nozzle 4 has an extension portion 409 extending between the first mounting hole 101 and the second mounting hole 102. The jet portion 405 is disposed on the extension portion 409, with the first jet port 402 and the second jet port 403 located on opposite sidewalls of the jet portion 405. The first jet port 402 and the second jet port 403 are disposed on the extension portion 409, further reducing the distance between the first jet port 402 and the first imaging assembly 2, and the distance between the second jet port 403 and the second imaging assembly 3. This ensures that the pressure of the water or air jets ejected from the jet ports on the outer surface of the lens of the imaging assembly is sufficiently high, thereby improving the cleaning effect of the nozzle 4. In this embodiment, the width of the extension portion 409 can be equal to or smaller than the distance between the two imaging assemblies. In some embodiments, the width of the portion between the two imaging components on the extension portion 409 can be set to be narrower, and the width of the remaining portions can be set to be wider, so that the fluid can flow from the wider portion to the narrower portion, thereby increasing the fluid pressure, which is beneficial to improving the cleaning effect. When the width of the portion between the two imaging components is set to be narrower, it is also beneficial to reduce the distance between the two imaging components, which is beneficial to reducing the outer diameter of the tip seat 1.

[0042] In one embodiment, Figure 8 、 Figure 9As shown, the distal end surface of the tip base 1 is provided with a groove 104, which extends from the nozzle mounting hole 103 to between the first mounting hole 101 and the second mounting hole 102. The extension portion 409 fits in the groove 104. The nozzle 4 is provided with a second injection channel 410 perpendicular to the axis of the nozzle mounting hole 103. The injection portion 405 has a hollow structure, and the second injection channel 410 is connected to the first injection port 402 and the second injection port 403 through the hollow structure. The extension portion 409 is located in the groove 104 to avoid the situation where an excessively large protruding structure affects the lighting effect or causes patient discomfort. In this embodiment, the distal end surface of the extension portion 409 can be flush with the distal end surface of the tip base 1. In some embodiments, the distal end surface of the extension portion 409 can also be higher or lower than the distal end surface of the tip base 1 and flush. In this embodiment, the second injection channel 410 is perpendicular to the inner hole of the tube body 404, which means that the axis of the second injection channel 410 is perpendicular to the axis of the inner hole of the tube body 404. In some embodiments, the second injection channel 410 can be approximately perpendicular to the inner hole of the tube body 404, which is an equivalent replacement for the second injection channel 410 being perpendicular to the inner hole of the tube body 404. In some application scenarios, the distal end surface of the tip seat 1 can also be provided with no groove 104, and the extension portion 409 can be provided to extend closely against the distal end surface of the tip seat 1.

[0043] In one embodiment, the tip seat 1 is provided with a positioning step 105, a portion of which is located on the wall of the nozzle mounting hole 103, and another portion is located on the wall of the groove 104. The proximal end face of the nozzle 4 is fixedly connected to the positioning step 105, and the second injection channel 410 is connected to the nozzle mounting hole 103. The proximal end of the nozzle mounting hole 103 is used to communicate with the water and gas pipe 5. The nozzle 4 fits into the nozzle mounting hole 103 and the groove 104. When fixed, the proximal end face of the nozzle 4 can be fixedly connected to the positioning step 105 by means of, but not limited to, bonding. Alternatively, the side wall of the nozzle 4 can be connected and fixed to the wall of the nozzle mounting hole 103 and the wall of the groove 104. The positioning step 105 can also form an axial limit for the nozzle 4, which is conducive to improving the fixing effect of the nozzle 4. In this embodiment, the nozzle 4 is connected to the water-air pipe 5 through the nozzle mounting hole 103, that is, there is no direct connection between the water-air pipe 5 and the nozzle 4. During installation, the water-air pipe 5 is inserted from the proximal side of the tip seat 1 and fixed to the proximal end of the nozzle mounting hole 103, and the nozzle 4 is inserted from the distal side of the tip seat 1 and fixed to the distal end of the nozzle mounting hole 103. In some application scenarios, such as Figure 10 As shown, when the nozzle 4 includes the tube body 404, the extension portion 409 can also be formed by the ejection portion 405 protruding from the end surface of the tip seat 1 and extending directly to between the two imaging components.

[0044] In one embodiment, Figure 11 、 Figure 12As shown, the tip base is further provided with a connecting groove 106, which is located between the first mounting hole 101 and the second mounting hole 102. The connecting groove 106 forms a notch in the wall of the first mounting hole 101 and the second mounting hole 102, connecting the first mounting hole 101 and the second mounting hole 102. Through the connecting groove 106, the first imaging component 2 and the second imaging component 3 can be pre-connected into an integral structure and then installed in the first mounting hole 101 and the second mounting hole 102 at the same time. The connecting groove 106 forms a gap between the first imaging component 2 and the second imaging component 3. In one embodiment, the housings of the first imaging component 2 and the second imaging component 3 can be connected into an integral structure, or can be directly manufactured into an integral structure. In this case, the integration of the tip components is higher and assembly is simplified. In some embodiments, when the distal end surface of the tip base 1 is provided with a groove 104, the connecting groove 106 may be part of the structure of the groove 104, that is, the first mounting hole 101 and the second mounting hole 102 are also connected to the groove 104. In addition, an avoidance groove may be provided on the connection structure between the first imaging component 2 and the second imaging component 3 to allow the extension portion 409 to extend between the two imaging components. In this case, the avoidance groove on the connection structure may be part of the structure of the groove 104. In some application scenarios, the connecting groove 106 may not be provided between the first mounting hole 101 and the second mounting hole 102.

[0045] In one embodiment, Figure 2 As shown, in the cross-section of the tip assembly, the line connecting the center of the cross-section corresponding to nozzle mounting hole 103 and the center of the cross-section corresponding to first mounting hole 101 is first line L1, and the line connecting the center of the cross-section corresponding to nozzle mounting hole 103 and the center of the cross-section corresponding to second mounting hole 102 is second line L2. The lengths of first line L1 and second line L2 are equal, and the cross-section is perpendicular to the axis of the tip assembly. In this case, nozzle mounting hole 103, first mounting hole 101, and second mounting hole 102 are arranged in the most compact isosceles triangle shape, further reducing the outer diameter of tip base 1 and avoiding the inconvenience or increased discomfort caused by the larger tip base 1. The equal lengths of first line L1 and second line L2 ensure that the pressure of the liquid or gas sprayed by nozzle 4 onto the outer surfaces of the lenses of first imaging assembly 2 and second imaging assembly 3 is consistent, and nozzle 4 has a sufficiently good cleaning effect on the lenses of both first imaging assembly 2 and second imaging assembly 3. In this embodiment, when the lengths of the first line segment L1 and the second line segment L2 are substantially equal, it is equivalent to the lengths of the first line segment L1 and the second line segment L2 being equal. In some application scenarios, the lengths of the first line segment L1 and the second line segment L2 may not be equal, as long as the nozzle mounting hole 103 is located between the first mounting hole 101 and the second mounting hole 102.

[0046] The tip assembly in this embodiment may also include other functional structures or components. For example, the tip assembly also includes an instrument channel for instruments to pass into the body. The instrument channel is installed in the channel mounting hole of the tip seat 1. In order to further reduce the outer diameter of the tip seat 1, the channel mounting hole may also be located between the first mounting hole 101 and the second mounting hole 102. The center line connecting the channel mounting hole, the first mounting hole 101, and the second mounting hole 102 is a triangle.

[0047] In the endoscope tip assembly of the above embodiment, the nozzle mounting hole 103 is located between the first mounting hole 101 and the second mounting hole 102, and the spraying area 401 of the nozzle 4 covers the first imaging component 2 and the second imaging component 3, so that the nozzle 4 can clean the first imaging component 2 and the second imaging component 3 at the same time. There is no need to set up two nozzles 4, which is beneficial to reducing the number of parts and reducing the outer diameter of the tip seat 1. The nozzle mounting hole 103 is located between the two imaging components, which is not only compact in structure, but also has a good effect on cleaning the two imaging components by the nozzle 4.

[0048] See also Figures 1 to 13 The embodiment of the present application also provides an endoscope, including a water-air tube 5 and the tip assembly 6 as described above, wherein the water-air tube 5 is connected to the tip assembly and is used to provide cleaning fluid to the nozzle 4.

[0049] The tip assembly 6 in this embodiment is the same as that in the above embodiment and will not be described in detail here. The endoscope in this embodiment may also include other functional structures or components, such as an insertion tube 7, a bending tube and a handle 8. The handle 8 is connected to the proximal end of the insertion tube 7, the bending tube is connected to the distal end of the insertion tube 7, and the tip seat 1 is fixed to the distal end of the bending tube. The handle 8 is a control end, and the bending shape of the bending tube can be controlled by the handle 8 to adjust the visible area of ​​the imaging assembly in the body, thereby facilitating surgery or examination. The distal end is the end away from the handle of the endoscope, and the proximal end is the end close to the handle.

[0050] The endoscope of the above embodiment includes a tip component 6, in which the nozzle mounting hole 103 is located between the first mounting hole 101 and the second mounting hole 102. The spraying area 401 of the nozzle 4 covers the first imaging component 2 and the second imaging component 3, so that the nozzle 4 can clean the first imaging component 2 and the second imaging component 3 at the same time. There is no need to set two nozzles 4, which is beneficial to reducing the number of parts and reducing the outer diameter of the tip seat 1. The nozzle mounting hole 103 is located between the two imaging components, which is not only compact in structure, but also has a good effect on cleaning the two imaging components by the nozzle 4.

[0051] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For those skilled in the art of the present application, based on the concept of the present application, they can also make some simple deductions, modifications or substitutions.

Claims

1. An endoscope tip assembly, characterized in that: include: The tip seat includes a nozzle mounting hole, a first mounting hole, and a second mounting hole. The first mounting hole and the second mounting hole are adjacent to each other. The nozzle mounting hole is located between the first mounting hole and the second mounting hole, and the center line of the nozzle mounting hole, the first mounting hole, and the second mounting hole is a triangle; a nozzle is installed in the nozzle mounting hole, a first imaging component is installed in the first mounting hole, and a second imaging component is installed in the second mounting hole; the distal end of the nozzle is provided with a spray portion protruding from the distal end surface of the tip seat, the spray portion is located between the first imaging component and the second imaging component, the spray portion is provided with a first spray port and a second spray port, the spray area of ​​the first spray port at least covers the first imaging component, and the spray area of ​​the second spray port at least covers the second imaging component, and the spray area is the area covered by the fluid sprayed by the spray port; the nozzle has an extension portion extending between the first mounting hole and the second mounting hole, the spray portion is provided on the extension portion, and the first spray port and the second spray port are located on the side walls on opposite sides of the spray portion.

2. The endoscope tip assembly according to claim 1, wherein: The nozzle includes a tube body, which is inserted into the nozzle mounting hole and fixedly connected to the tip seat. The injection portion is provided at the distal end of the tube body, and the proximal end of the tube body is used to be connected to the water and gas pipe. The injection portion is provided with a first injection channel that is perpendicular to and connected to the inner hole of the tube body, and the first injection port and the second injection port are both connected to the first injection channel.

3. The endoscope tip assembly according to claim 2, wherein: A guide surface is provided in the nozzle, and the guide surface is located at the portion where the first injection channel is connected to the inner hole of the tube body, and is used to guide the fluid from the inner hole of the tube body to the first injection channel. The guide surface is an inclined surface or an arc surface.

4. The endoscope tip assembly according to claim 2, wherein: The tube body and the injection portion are an integrated structure. The outer side wall of the tube body is provided with a raised limiting portion. The hole wall of the nozzle mounting hole is provided with a limiting step. The limiting portion and the limiting step cooperate to form an axial limit of the nozzle.

5. The endoscope tip assembly according to claim 1, wherein: The distal end surface of the tip seat is provided with a groove, which extends from the nozzle mounting hole to between the first mounting hole and the second mounting hole, and the extension portion is engaged in the groove. The nozzle is provided with a second injection channel perpendicular to the axis of the nozzle mounting hole, and the injection portion is a hollow structure. The second injection channel is connected to the first injection port and the second injection port through the hollow structure.

6. The endoscope tip assembly according to claim 5, characterized in that The tip seat is provided with a positioning step, a part of the positioning step is located on the hole wall of the nozzle mounting hole, and the other part is located on the groove wall of the groove, the proximal end face of the nozzle is fixedly connected to the positioning step, the second injection channel is connected to the nozzle mounting hole, and the proximal end of the nozzle mounting hole is used to communicate with the water and gas pipe.

7. The endoscope tip assembly according to any one of claims 1 to 6, characterized in that: On the cross section of the tip component, the line between the center of the cross section corresponding to the nozzle mounting hole and the center of the cross section corresponding to the first mounting hole is the first line, and the line between the center of the cross section corresponding to the nozzle mounting hole and the center of the cross section corresponding to the second mounting hole is the second line. The lengths of the first line and the second line are equal, and the cross section is a cross section perpendicular to the axial direction of the tip component.

8. An endoscope, characterized in that: It comprises a water-gas tube and an endoscope tip assembly as described in any one of claims 1 to 7, wherein the water-gas tube is connected to the tip assembly and is used to provide fluid for cleaning to the nozzle.

Images