Endoscope tip assembly and endoscope

Abstract

The endoscope tip assembly comprises a tip seat, the tip seat comprises 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 nozzle mounting hole is located between the first mounting hole and the second mounting hole; the center connecting lines of the nozzle mounting hole, the first mounting hole and the second mounting hole form a triangle; a nozzle is mounted in the nozzle mounting hole, a first imaging assembly is mounted in the first mounting hole, and a second imaging assembly is mounted in the second mounting hole; the far end of the nozzle is provided with a spraying part protruding out of the far end face of the tip base, the spraying part is located between the first imaging assembly and the second imaging assembly and provided with a spraying opening, the spraying area of the spraying opening at least covers the first imaging assembly and the second imaging assembly, and the spraying area of the spraying opening is the area covered by fluid sprayed out of the spraying opening. The number of parts is reduced, and the outer diameter of the tip seat is reduced.

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 a surgical incision to deliver an imaging component into the body and conduct a comprehensive examination or treatment of the internal organs of the human body. The tip component of the endoscope includes an imaging component and a nozzle. The imaging component and the nozzle can be installed on the tip seat. The nozzle can spray water or air on the outer surface of the lens of the imaging component to wash away foreign matter that adheres. In order to facilitate the rapid and accurate inspection 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 to be set up accordingly, and one nozzle is used to clean one 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 a tip seat.

[0004] According to one aspect of the present application, an endoscope tip assembly is provided in an embodiment, 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 a center line connecting the nozzle mounting hole, the first mounting hole, and the second mounting hole being in the shape of a triangle; a nozzle is mounted in the nozzle mounting hole, a first imaging assembly is mounted in the first mounting hole, and a second imaging assembly is mounted in the second mounting hole; a distal end of the nozzle is provided with an injection portion protruding from a distal end surface of the tip seat, the injection portion having an injection port, an injection area of ​​the injection port at least covering the first imaging assembly and the second imaging assembly, and an injection area of ​​the injection port is an area covered by the fluid ejected from the injection 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 a water and gas pipe, the injection portion is provided with a first injection channel which 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 a slope or an arc surface.

[0008] In one embodiment, the tube body and the injection portion are an integral structure, the outer 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 disposed 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 another 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-gas tube and an endoscope tip assembly as described above, wherein the water-gas tube is connected to the tip assembly and is used to provide a cleaning fluid to the nozzle.

[0014] According to the endoscope tip assembly and the 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, and there is no need to set up two nozzles, which is beneficial to reduce the number of parts and components and reduce the outer diameter size 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 diagram of the structure of an endoscope tip assembly according to an embodiment;

[0016] Figure 2 A schematic diagram of the structure of a tip seat according to an embodiment;

[0017] Figure 3 A schematic diagram of the structure of the injection area of ​​an embodiment;

[0018] Figure 4 A schematic diagram of the structure of a first injection port and a second injection port in an embodiment;

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

[0020] Figure 6 A schematic diagram of the structure 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 It is a schematic diagram of the exploded structure of a front end component part structure of an embodiment;

[0023] Fig. 9 A schematic cross-sectional view of the connection between a water and air pipe and a front end seat in one embodiment;

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

[0025] Fig.11 Another structural schematic diagram of an endoscope tip assembly according to an embodiment;

[0026] Fig.12A schematic diagram of the structure of a connecting groove in an embodiment;

[0027] Fig.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 component; 3-second imaging component; 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 component; 7-insertion tube; 8-handle. DETAILED DESCRIPTION

[0030] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and 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 can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0032] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0033] See also Figures 1 to 12The 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 adjacently arranged, 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 triangular; 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 at least covers 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 can 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 vertical projection of the center of the nozzle mounting hole 103 on the straight line passing through the centers of the first mounting hole 101 and the second mounting hole 102 is located between the first mounting hole 101 and the second mounting hole 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 face of the tip seat 1, or other cross sections perpendicular to the axis of the tip assembly. The nozzle mounting hole 103 in this embodiment 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 triangular, and the structure is more compact, which can reduce the outer diameter of the tip seat 1. In this embodiment, the jet portion 405 of the nozzle 4 is located between the first imaging component 2 and the second imaging component 3, so that the distance between the jet port and the first imaging component 2 and the second imaging component 3 is relatively close, and the difference in distance is also small, so that the water flow or air flow sprayed from the jet port to the outer surface of the lens of the first imaging component 2 and the second imaging component 3 has a sufficiently large pressure, and the nozzle 4 has a good cleaning effect on the lens of the first imaging component 2 and the second imaging component 3. The jet area 401 of the jet port in this embodiment 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, without setting two nozzles 4, which is conducive to reducing the number of parts and reducing the outer diameter size of the tip seat 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. The present 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 the present embodiment can be made of metal or plastic. The tip seat 1 in the present embodiment can be an integral structure, or it can be composed of a combination of components connected. The injection portion 405 in the present embodiment protrudes from the distal end surface of the tip seat 1, which can facilitate the cleaning of the outer surface of the lens of the imaging component by the nozzle 4. The first imaging component 2 and the second imaging component 3 in the present embodiment can have different functions. For example, one can be imaging of normal light and the other can be imaging of special light, or one can be imaging of normal magnification and the other can be imaging of 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 side walls opposite to the first injection port 402 and the two side walls opposite to the second injection port 403 may both be set as inclined surfaces inclined outward. 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 is 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 front end seat 1, a jet part 405 is arranged at the distal end of the tube body 404, and the proximal end of the tube body 404 is used to connect with the water and gas pipe 5. The jet part 405 is provided with a first jet channel 406 which is perpendicular to and connected to the inner hole of the tube body 404, and the side wall of the jet part 405 close to the imaging component is provided with a first jet port 402 and a second jet port 403, and the first jet port 402 and the second jet port 403 are both connected to the first jet channel 406. When the first jet port 402 and the second jet port 403 are arranged on the same side of the jet part 405, the pressure attenuation of the water flow or air flow ejected from the jet port is smaller, and the spraying effect of the nozzle 4 is better. When installing the nozzle 4, the outer periphery of the tube body 404 can be bonded to the hole wall of the nozzle mounting hole 103, and the airtightness of the connection is better. The proximal end in this embodiment is the end close 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, a guide surface 408 is provided in the nozzle 4. The guide surface 408 is located at the portion where the first injection channel 406 is connected to the inner hole of the tube body 404, and is used to guide the fluid from the inner hole of the tube body 404 to the first injection channel 406. The guide surface 408 is an inclined surface or an arc surface. Through the guidance of the guide surface 408, the water flow or air flow can be turned more smoothly, reducing the flow velocity reduction caused by the turning, which is conducive to improving the spraying effect of the nozzle 4. In some embodiments, an inclined transition hole section can also be set between the first injection channel 406 and the inner hole of the tube body 404.

[0040] In one embodiment, Figure 5As shown, the tube body 404 and the injection part 405 are an integral structure, the outer wall of the tube body 404 is provided with a raised limiting part 407, and the hole wall of the nozzle mounting hole 103 is provided with a limiting step, and the limiting part 407 cooperates with the limiting step to form the axial limit of the nozzle 4. The tube body 404 and the injection part 405 can be an integral structure formed by injection molding, and the processing efficiency of the integral structure is higher, and the air tightness of the integral structure is also better, which can avoid the leakage of high-pressure liquid or gas, and can also avoid the situation where the liquid leaks to the charged parts such as the imaging component and the lighting component and causes a short circuit and causes a safety risk. In this embodiment, the limiting part 407 cooperates with the limiting step to form the axial limit of the nozzle 4, so that the protruding height of the injection part 405 is more accurate, and the situation that the water flow or air flow cannot be smoothly sprayed to the outer surface of the lens of the imaging component due to the injection port being too high or too low is avoided. In this embodiment, the specific shape of the limiting part 407 is not limited, and the protrusion and the outer wall of the tube body 404 can be, for example, it can be a protruding block, or it can also be a ring-shaped flange structure.

[0041] In one embodiment, Figure 6-Figure 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 arranged on the extension portion 409, and the first jet port 402 and the second jet port 403 are located on the side walls of the jet portion 405 on opposite sides. The first jet port 402 and the second jet port 403 are arranged on the extension portion 409, which can further reduce the distance between the first jet port 402 and the first imaging component 2, and the distance between the second jet port 403 and the second imaging component 3, so that the pressure of the water flow or air flow sprayed from the jet port to the outer surface of the lens of the imaging component is large enough, which is conducive to improving the cleaning effect of the nozzle 4. In this embodiment, the width of the extension portion 409 can be equal to the spacing between the two imaging components, or can also be smaller than the spacing between the two imaging components. 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 , Fig. 9As shown, the distal end surface of the tip seat 1 is provided with a groove 104, the groove 104 extends from the nozzle mounting hole 103 to between the first mounting hole 101 and the second mounting hole 102, the extension 409 is fitted 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 is a hollow structure, and the second injection channel 410 is connected with the first injection port 402 and the second injection port 403 through the hollow structure. The extension 409 is located in the groove 104, which can avoid the situation that the lighting effect is affected or the patient discomfort caused by the excessive protruding structure. The distal end surface of the extension 409 in this embodiment can be flush with the distal end surface of the tip seat 1. In some embodiments, the distal end surface of the extension 409 can also be higher or lower than the distal end surface of the tip seat 1. 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 substantially 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 face of the tip seat 1 may not be provided with the groove 104, and the extension portion 409 can be extended and arranged close to the distal end face of the tip seat 1.

[0043] In one embodiment, the front end seat 1 is provided with a positioning step 105, a part of the positioning step 105 is located on the hole wall of the nozzle mounting hole 103, and the other part is located on the groove wall of the groove 104, the proximal end face of the nozzle 4 is fixedly connected to the positioning step 105, the second injection channel 410 is communicated with the nozzle mounting hole 103, and the proximal end of the nozzle mounting hole 103 is used to communicate with the water and gas pipe 5. The nozzle 4 is fitted in 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, or the side wall of the nozzle 4 can be connected and fixed to the hole wall of the nozzle mounting hole 103 and the groove 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-gas pipe 5 through the nozzle mounting hole 103, that is, there is no direct connection between the water-gas pipe 5 and the nozzle 4. During installation, the water-gas pipe 5 is inserted and fixed to the proximal end of the nozzle mounting hole 103 from the proximal end side of the tip seat 1, and the nozzle 4 is inserted and fixed to the distal end of the nozzle mounting hole 103 from the distal end side of the tip seat 1. In some application scenarios, such as Fig.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 directly extending to between the two imaging components.

[0044] In one embodiment, Fig.11 , Fig.12As shown, the tip seat is also provided with a connecting groove 106, and the connecting groove 106 is located between the first mounting hole 101 and the second mounting hole 102. The connecting groove 106 forms a notch on the hole wall of the first mounting hole 101 and the second mounting hole 102, and connects 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 one time. The connecting groove 106 forms a gap between the connecting part of the first imaging component 2 and the second imaging component 3. In one embodiment, the shells of the first imaging component 2 and the second imaging component 3 can be connected into an integral structure, or can be directly made into an integral structure. In this case, the integration of the tip components is higher and the assembly is simplified. In some embodiments, when the distal end surface of the tip seat 1 is provided with a groove 104, part of the connecting groove 106 may be a partial 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 so that the extension portion 409 extends between the two imaging components. In this case, the avoidance groove on the connection structure may be a partial 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, on the cross section of the tip assembly, the line between the center of the cross section corresponding to the nozzle mounting hole 103 and the center of the cross section corresponding to the first mounting hole 101 is the first line L1, and the line between the center of the cross section corresponding to the nozzle mounting hole 103 and the center of the cross section corresponding to the second mounting hole 102 is the second line L2. The lengths of the first line L1 and the second line L2 are equal, and the cross section is a cross section perpendicular to the axis direction of the tip assembly. At this time, the nozzle mounting hole 103, the first mounting hole 101, and the second mounting hole 102 are arranged in the most compact isosceles triangle, which can further reduce the outer diameter of the tip seat 1, and avoid the situation where the insertion is inconvenient or the discomfort is increased due to the large tip seat 1. The lengths of the first line L1 and the second line L2 are equal, so that the pressure of the liquid or gas sprayed by the nozzle 4 to the outer surface of the lens of the first imaging assembly 2 and the second imaging assembly 3 is consistent, and the nozzle 4 has a sufficiently good cleaning effect on the lens of the first imaging assembly 2 and the second imaging assembly 3. In this embodiment, when the lengths of the first line segment L1 and the second line segment L2 are almost equal, it is equivalent to that the lengths of the first line segment L1 and the second line segment L2 are 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 component in this embodiment may also include other functional structures or components. For example, the tip component also includes an instrument channel for passing instruments 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 of 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 spray 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 size 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 the cleaning of 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-gas tube 5 and a tip assembly 6 as described above, wherein the water-gas tube 5 is connected to the tip assembly and is used to provide a 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 component in the body, which facilitates surgery or inspection. The above-mentioned distal end is the end away from the endoscope handle, and the proximal end is the end close to the handle.

[0050] The endoscope of the above-mentioned 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, 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, and there is no need to set up two nozzles 4, which is beneficial to reducing the number of parts and reducing the outer diameter size 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 technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. An endoscope tip assembly, characterized in that: include: A tip seat, 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 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 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; a distal end of the nozzle is provided with a spray portion protruding from a 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 has a spray port, the spray area of ​​the spray port at least covers the first imaging component and the second imaging component, and the spray area of ​​the spray port is the area covered by the fluid sprayed from the spray port.

2. The endoscope tip assembly according to claim 1, characterized in that: The ejection portion is provided with a first ejection port and a second ejection port. The ejection region of the first ejection port at least covers the first imaging component, and the ejection region of the second ejection port at least covers the second imaging component.

3. The endoscope tip assembly according to claim 2, characterized in that: 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 arranged 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 which is perpendicular to and connected to the inner hole of the tube body, and the first injection port and the second injection port are arranged 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.

4. The endoscope tip assembly according to claim 3, characterized in that: A guide surface is provided in the nozzle, and the guide surface is located at the position 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.

5. The endoscope tip assembly according to claim 3, characterized in that: The tube body and the injection part are an integral structure, the outer side wall of the tube body is provided with a raised limiting part, the hole wall of the nozzle mounting hole is provided with a limiting step, and the limiting part cooperates with the limiting step to form an axial limit of the nozzle.

6. The endoscope tip assembly according to claim 2, characterized in that: The nozzle has an extension portion extending between the first mounting hole and the second mounting hole, the injection portion is arranged on the extension portion, and the first injection port and the second injection port are located on side walls at opposite sides of the injection portion.

7. The endoscope tip assembly according to claim 6, characterized in that: The distal end surface of the tip seat is provided with a groove, and the groove extends from the nozzle mounting hole to between the first mounting hole and the second mounting hole. The extension portion is engaged in the groove, and the nozzle is provided with a second injection channel perpendicular to the axis of the nozzle mounting hole. The injection portion is a hollow structure, and the second injection channel is connected with the first injection port and the second injection port through the hollow structure.

8. The endoscope tip assembly according to claim 7, 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 connect with the water and gas pipe.

9. The endoscope tip assembly according to any one of claims 1 to 8, 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.

10. 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 9, wherein the water-gas tube is connected to the tip assembly and is used to provide fluid for cleaning to the nozzle.

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