Endoscope head end seat and endoscope

Abstract

The utility model relates to an endoscope head end seat and an endoscope, the endoscope head end seat comprises an optical element and an integrated end seat body, the end seat body is internally provided with a fixing hole and a mounting hole which extend along the axial direction of the end seat body, the fixing hole is located at the far end side of the mounting hole and is communicated with the mounting hole in the axial direction, and the fixing hole is located at the far end side of the mounting hole and is communicated with the mounting hole in the axial direction. The far end of the fixing hole penetrates to the far end face of the end base body. The optical element is arranged in the fixing hole and is fixed with the end seat body, and the mounting hole is used for mounting an image sensing unit. Therefore, parts at the head end part of the endoscope can be reduced, the material cost and the assembly cost can be reduced, and the outer diameter of the head end seat can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of endoscopes, specifically to an endoscope lens mount and an endoscope. Background Technology

[0002] An endoscope is a diagnostic instrument integrating traditional optics, ergonomics, precision mechanics, modern electronics, mathematics, and software. With the rapid development of science and technology and medical technology in recent years, minimally invasive or non-invasive endoscopic medical examinations and treatments have become widely adopted. An endoscope can enter the human body through natural passages or surgical incisions, and uses an imaging component located at the tip to examine or treat internal organs. The imaging component includes a tube, mount, optical elements, image sensing unit, and connecting wires. Currently, the optical elements in the imaging component are fixed in the tube, and the image sensing unit is fixed on the mount. The tube and mount are generally an integral structure. The tip mount needs to have corresponding mounting holes for the tube and mount; these mounting holes are relatively large, thus increasing the outer diameter of the tip mount. Utility Model Content

[0003] This application provides an endoscope head mount and an endoscope, which can solve the problem of the large outer diameter of the head mount.

[0004] According to one aspect of this application, one embodiment provides an endoscope mount, comprising: an optical element, and an integral mount body. The mount body has a fixing hole and a mounting hole extending axially along the mount body. The fixing hole is located at the distal end of the mounting hole and communicates axially with the mounting hole. The distal end of the fixing hole extends through to the distal end face of the mount body. The optical element is disposed in the fixing hole and fixed to the mount body. The mounting hole is used to mount an image sensing unit.

[0005] In one embodiment, the fixing hole is a stepped hole having at least two hole segments with different diameters, and the optical element is fixed in the hole segment.

[0006] In one embodiment, the diameter of each of the segments in the stepped hole increases sequentially from the proximal end to the distal end.

[0007] In one embodiment, at least one channel hole is provided on the outer side of the fixing hole, which extends through the end seat body along the axial direction. At least a portion of the channel hole is isolated from the fixing hole and the mounting hole.

[0008] In one embodiment, the end-mount body is provided with a mounting portion, which is the channel hole, for mounting a lighting element, which is a lighting fiber or an LED.

[0009] In one embodiment, when the mounting portion is a groove structure, the maximum width of the proximal end of the channel hole is the same as the maximum width of the distal end, or the maximum width of the distal end of the channel hole is greater than the maximum width of the proximal end.

[0010] In one embodiment, the mounting hole has a rectangular cross-section, which is perpendicular to the axis of the end seat body, and the channel hole is located near the long side of the rectangle.

[0011] In one embodiment, the proximal end of the end seat body is provided with a hollow shaft section, the inner hole of the hollow shaft section is axially connected to the mounting hole, and the hollow shaft section is used to connect with the insertion tube section of the endoscope.

[0012] In one embodiment, the distal width of the mounting hole is greater than the proximal width of the fixing hole, forming a positioning step located between the mounting hole and the fixing hole, the positioning step being used for axial positioning of the image sensing unit.

[0013] According to another aspect of this application, one embodiment provides an endoscope including an insertion tube, an image sensing unit, and an endoscope lens mount as described above, wherein the insertion tube is connected to the proximal end of the head mount, and the image sensing unit is mounted in the mounting hole corresponding to the optical element.

[0014] According to the endoscopic lens mount and endoscope of the above embodiments, the head mount has an optical element, which is disposed in a fixing hole and integrated with the mount body into an integral structure. The image sensing unit of the imaging component can be directly installed in the mounting hole of the mount body, thereby reducing the number of parts at the end of the endoscopic lens, which is beneficial to reducing material costs and assembly costs, and also beneficial to reducing the outer diameter of the head mount. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a structure of an endoscope lens mount according to one embodiment;

[0016] Figure 2 This is a schematic diagram of another structure of the endoscope lens mount according to one embodiment;

[0017] Figure 3 A schematic diagram of a structure in one embodiment where the channel hole is located near the long side of a rectangle;

[0018] Figure 4 A schematic diagram of a structure for installing an illumination optical fiber in a channel hole according to one embodiment;

[0019] Figure 5 This is a schematic diagram of a structure in which the mounting part is a channel hole, according to one embodiment.

[0020] Figure 6An exploded view of an LED mounted on a headstock according to one embodiment;

[0021] Figure 7 This is a schematic diagram of the connection between the head end seat and the insertion tube segment in one embodiment.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Head end seat, 11-End seat body, 12-Optical element, 101-Fixing hole, 102-Mounting hole, 103-Channel, 104-Hollow shaft section, 105-Groove structure, 106-Leaning groove; 2-Image sensing unit; 3-Illumination fiber; 4-LED; 5-Wire; 6-Insertion tube section. Detailed Implementation

[0024] 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.

[0025] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0026] 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).

[0027] In related technologies, the optical elements in the imaging assembly are fixed in the lens barrel, and the image sensing unit is fixed on the lens mount. The head end mount needs to have corresponding mounting positions for the lens barrel and lens mount, which increases the outer diameter of the head end mount. In contrast, this application places the optical elements in the fixing hole and integrates them with the end mount body, and places the image sensing unit in the mounting hole. This eliminates the need for additional lens barrel and lens mount, which helps to reduce the outer diameter of the head end mount.

[0028] Please see Figures 1 to 7 This application provides an endoscope lens mount 1, which includes an optical element 12, a mount body 11, and other functional components or structures as needed, which are described in detail below.

[0029] like Figure 1 As shown, the end-mount body 11 in this embodiment is an integral structure. The end-mount body 11 is provided with a fixing hole 101 and a mounting hole 102 extending along the axial direction of the end-mount body 11. The fixing hole 101 is located on the distal side of the mounting hole 102 and is axially connected to the mounting hole 102. The distal end of the fixing hole 101 extends through to the distal end face of the end-mount body 11. The optical element 12 is disposed in the fixing hole 101 and fixed to the end-mount body 11. The mounting hole 102 is used to mount the image sensing unit 2.

[0030] It is understood that the end-mount body 11 in this embodiment may be cylindrical, and the material of the end-mount body 11 may be, but is not limited to, plastic. In this embodiment, the distal end is the end away from the endoscope handle, the proximal end is the end close to the endoscope handle, and the axial direction is the direction of the axis extension. In this embodiment, the shape of the fixing hole 101 may match the overall shape of the optical element 12, for example, it may be a circular hole. In this embodiment, the optical element 12 may include an optical lens, which is fixed in the fixing hole 101. In this embodiment, the optical element 12 may be fixed in the fixing hole 101 by means of, but not limited to, adhesive fixing or snap-fit ​​fixing. After fixing, the optical element 12 and the end-mount body 11 form an integral structure with higher integration, which is beneficial to reducing the outer diameter of the head end-mount. There is no need to set a lens barrel between the optical element and the end-mount body 11, which is beneficial to reducing material costs and assembly costs. The image sensing unit 2 in this embodiment includes, but is not limited to, an image sensor. The mounting hole 102 in this embodiment may or may not match the shape of the image sensing unit 2. For example, the mounting hole 102 may be, but is not limited to, a circular hole, a square hole, etc.

[0031] In one embodiment, such as Figure 1 , Figure 2As shown, the fixing hole 101 is a stepped hole with at least two segments of different diameters, in which the optical element 12 is fixed. A stepped hole, also known as a stepped aperture, has multiple segments of different diameters, forming a stepped structure between them. The stepped hole can accommodate optical lenses of different sizes in the optical element 12. The steps on the hole wall can limit the positioning of the optical element 12, facilitating its installation. During fixing, the optical element 12 can be, but is not limited to, connected and fixed to the hole wall and / or stepped surface of the stepped hole by adhesive bonding. In some embodiments, the length of the fixing hole 101 can be greater than the length of the optical element 12. For example, when a certain distance is required between the optical element 12 and the image sensing unit 2, a certain distance can be left between the proximal end of the optical element 12 and the proximal opening of the fixing hole 101. In some applications, the distal end of the optical element 12 may not protrude from the distal end face of the end-mount body 11.

[0032] In one embodiment, the aperture of each segment in the stepped hole increases sequentially from the proximal end to the distal end. This sequential increase in aperture facilitates assembly; when fixing the optical element 12, it can be fixed sequentially from the proximal end with the smaller aperture to the distal end. In some embodiments, the aperture of each segment in the stepped hole may decrease sequentially from the proximal end to the distal end. In this case, optical lenses or other optical devices can be assembled sequentially from the distal end to the proximal end of the fixing hole 101. In one application scenario, the aperture of the middle segment of the stepped hole may be smaller than the apertures of the segments at both ends. In this case, assembly can proceed sequentially from the middle of the fixing hole 101 towards both ends.

[0033] In one embodiment, such as Figure 2As shown, at least one channel hole 103 is provided on the outer side of the fixing hole 101, extending axially along the end seat body 11. At least a portion of the channel hole 103 is isolated from the fixing hole 101 and the mounting hole 102. In this embodiment, the channel hole 103 allows the passage of the lighting optical fiber 3, the wire 5, water vapor, or other instruments. In this embodiment, the isolation means that the channel hole 103 and the fixing hole 101 and the mounting hole 102 each have a certain wall thickness, so that the channel hole 103 and the fixing hole 101 and the mounting hole 102 are not connected in the radial direction. In some embodiments, the channel hole 103 can be completely isolated from the fixing hole 101 and the mounting hole 102. In some embodiments, a portion of the channel hole 103 and the fixing hole 101 and the mounting hole 102 can also be radially connected. In this embodiment, when only one fixing hole 101 is provided, the central axis of the fixing hole 101 can be aligned with the central axis of the end seat body 11. The channel hole 103 can be provided on the outer peripheral area of ​​the end seat body 11, excluding the central fixing hole 101. In some application scenarios, the central axis of the fixing hole 101 may not be aligned with the central axis of the end seat body 11. This embodiment does not impose a specific limit on the number of channel holes 103; one, two, or even more can be provided. When multiple channel holes 103 are provided, the components passing through each channel hole 103 can be the same or different. In this embodiment, the end seat body 11 can also be provided with an instrument channel hole 103. When an instrument channel hole 103 is provided, both the fixing hole 101 and the instrument channel hole 103 can be offset from the center of the end seat body 11.

[0034] In one embodiment, the end-mount body 11 is provided with a mounting portion, which is a channel hole 103 for mounting an illumination element, which is an illumination fiber 3 or an LED (Light Emitting Diode). In some embodiments, the mounting portion may also be other structures, such as through holes or stepped holes provided on opposite sides of the fixing hole 101.

[0035] In one embodiment, such as Figure 2 , Figure 4 As shown, when the mounting part is a channel hole 103, the maximum width of the proximal end of the channel hole 103 is the same as the maximum width of the distal end. In this case, the diameter of the channel hole 103 can remain unchanged. The endoscope can use fiber optic illumination, with the illumination fiber 3 inserted in the channel hole 103. The illumination fiber 3 can be flush with the distal end face of the endcap body 11, or it can not extend beyond the distal end face of the endcap body 11. In this embodiment, the cross-sectional profile of the channel hole 103 can match the cross-sectional profile of the illumination fiber 3; for example, the channel hole 103 can be a circular hole, an elliptical hole, or a rectangular hole, etc.

[0036] In one embodiment, such as Figure 5 , Figure 6As shown, when the mounting part is a channel hole 103, the maximum width of the distal end of the channel hole 103 can be greater than the maximum width of the proximal end. The wider distal end can be used to mount the LED4, and the relatively narrower distal end can be used for the wires 5 connecting the LED4 to pass through. The wider distal end extends to the distal end face of the end seat body 11, forming a groove structure 105 on the distal end face of the end seat body 11. This groove structure 105 is a partial hole segment structure of the channel hole 103. In this embodiment, the size and shape of the groove structure 105 can be matched with the LED4, and the number of channel holes 103 can also be matched with the number of LED4. For example, when there are two LED4s, there can also be two channel holes 103, which can be symmetrically distributed on both sides of the fixing hole 101. If the LED4 is rectangular, the corresponding groove structure 105 can also be set as a rectangular groove. The remaining hole segments of the channel hole 103 can be, but are not limited to, circular hole segments. In some embodiments, the number of channel holes 103 may be greater than the number of LEDs 4, so that the extra channel holes 103 can be used by other devices. When other devices are used, the channel holes 103 can be circular holes, rectangular holes, etc. The diameter of the channel holes 103 can remain constant or change along the direction from the proximal end to the distal end.

[0037] In one embodiment, such as Figure 3 As shown, the mounting hole 102 has a rectangular cross-section, which is perpendicular to the axis of the end-body body 11. The channel hole 103 is located near the long side of the rectangle. The wall thickness on the end-body body 11 corresponding to the long side of the rectangle is thicker, which facilitates the setting of the channel hole 103, and the diameter of the channel hole 103 can also be relatively larger. In some embodiments, the channel hole 103 can be located near the middle of the long side of the rectangle, where there is more space. In some application scenarios, the mounting hole 102 can also be other shapes, such as a circular hole, etc.

[0038] In one embodiment, the proximal end of the endcap body 11 is provided with a hollow shaft section 104. The inner hole of the hollow shaft section 104 is axially connected to the mounting hole 102, and the hollow shaft section 104 is used to connect with the insertion tube section 6 of the endoscope. The hollow shaft provides space for the head endcap 1 to connect with the insertion tube section 6. In some embodiments, the insertion tube section 6 can be inserted into the hollow shaft section 104 for fixed connection. In this embodiment, the curved tube section at the distal end of the insertion tube section 6 can be connected and fixed to the hollow shaft section 104.

[0039] In one embodiment, such as Figure 1 , Figure 7As shown, the width of the mounting hole 102 is greater than the width of the fixing hole 101, forming a positioning step between the mounting hole 102 and the fixing hole 101. The positioning step is used for axial positioning of the image sensing unit 2. During assembly, the distal end of the image sensing unit 2 rests against the positioning step and can be connected and fixed to the positioning step, facilitating the positioning and assembly of the image sensing unit 2. In some embodiments, a clearance groove 106 may be provided on the step surface of the positioning step. The fixing hole 101 extends from the bottom of the clearance groove 106 to the distal end face of the end seat body 11. The width of the clearance groove 106 is greater than the proximal width of the fixing hole 101. The clearance groove 106 can provide clearance for the optical path, allowing more light to be received by the image sensing unit. In this embodiment, the shape of the clearance groove 106 is not specifically limited; for example, it can be circular. In some application scenarios, in order to facilitate smoother movement of the head end seat within the natural channel, the outer periphery of the distal end of the end seat body 11 can be set as a frustum shape, with the small end of the frustum located at the distal end of the end seat body 11.

[0040] The endoscope lens mount 1 in the above embodiment has an optical element 12, which is disposed in the fixing hole 101 and integrated with the mount body into an integral structure. The image sensing unit 2 of the imaging component can be directly installed in the mounting hole 102 of the mount body 11. This reduces the number of parts at the end of the endoscope lens, which is beneficial to reducing material and assembly costs, and also helps to reduce the outer diameter of the head mount 1.

[0041] Please see Figures 1 to 7 This application embodiment also provides an endoscope, including an insertion tube segment 6, an image sensing unit 2, and an endoscope lens end mount 1 as described above. The insertion tube segment 6 is connected to the proximal end of the head end mount 1, and the image sensing unit 2 is installed in the mounting hole 102 and corresponds to the optical element 12.

[0042] In this embodiment, the headstock 1 is the same as in the above embodiment, and will not be described again here. The insertion tube segment 6 in this embodiment can be connected and fixed to the hollow shaft segment 104 provided on the headstock 1. In this embodiment, it can be a curved tube segment located at the distal end of the insertion tube segment 6 connected and fixed to the hollow shaft segment 104. The endoscope in this embodiment may also include an illumination fiber 3 or an LED 4. The installation method of the illumination fiber 3 and LED 4 on the headstock 1 can be the same as in the above embodiment, and will not be described again here. The endoscope in this embodiment is not limited to the above structure, and may also include other functional structures or components, such as a handle, which is connected to the proximal end of the insertion tube segment 6.

[0043] The endoscope provided in the above embodiment includes a headstock 1, which has an optical element 12. The optical element 12 is disposed in a fixing hole 101 and integrated with the headstock body 11 into a single structure. The image sensing unit 2 of the imaging component can be directly installed in the mounting hole 102 of the headstock body 11. This reduces the number of parts at the end of the endoscope lens, which is beneficial for reducing material and assembly costs. It also helps to reduce the outer diameter of the headstock 1, allowing the endoscope to be used in narrower natural passages and expanding the scope of application of the endoscope.

[0044] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. An endoscope tip seat, characterized by, The application relates to an endoscope head end seat, comprising: an optical element, and an integrated end seat body, wherein a fixing hole and a mounting hole are arranged along the axial extension of the end seat body, the fixing hole is located on the distal end side of the mounting hole and axially communicates with the mounting hole, the distal end of the fixing hole penetrates to the distal end face of the end seat body, the optical element is arranged in the fixing hole and fixed with the end seat body, and the mounting hole is used for mounting an image sensing unit. The fixing hole is a stepped hole with at least two hole sections with different diameters, and the optical element is fixed in the hole section.

2. The endoscope nosecone of claim 1, wherein, In the stepped hole, the diameters of the hole sections gradually increase from the proximal end to the distal end.

3. The endoscope nosecone of claim 2, wherein, The outer side of the fixing hole is provided with at least one through hole penetrating along the axial direction of the end seat body, and at least part of the hole section of the through hole is isolated from the fixing hole and the mounting hole.

4. The endoscope nosecone of claim 1, wherein, The end seat body is provided with a mounting part, the mounting part is the through hole, and an illuminating element is mounted on the through hole, the illuminating element being an illuminating optical fiber or an LED.

5. The endoscope nosecone of claim 4, wherein, The proximal end maximum width of the through hole is the same as the distal end maximum width, or the distal end maximum width of the through hole is greater than the proximal end maximum width.

6. The endoscope nosecone of claim 5, wherein, The cross section of the mounting hole is rectangular, the cross section is a cross section perpendicular to the axis of the end seat body, and the through hole is arranged close to the long side of the rectangle.

7. The endoscope nosecone of claim 4, wherein, The proximal end of the end seat body is provided with a hollow shaft section, the inner hole of the hollow shaft section axially communicates with the mounting hole, and the hollow shaft section is used for connecting with an insertion tube section of an endoscope.

8. The endoscope nosecone of any one of claims 1-7, wherein, The distal end width of the mounting hole is greater than the proximal end width of the fixing hole, thereby forming a positioning step between the mounting hole and the fixing hole, and the positioning step is used for axially positioning the image sensing unit.

9. The endoscope nosecone of any one of claims 1-7, wherein, The application further relates to an endoscope, comprising an insertion tube section, an image sensing unit and the endoscope head end seat according to any one of claims 1-9, the insertion tube section is connected with the proximal end of the head end seat, and the image sensing unit is mounted in the mounting hole and corresponds to the optical element.

10. An endoscope characterized by comprising: ​

Images