Tip and endoscope

Abstract

This utility model discloses a tip and endoscope. The tip includes a cylindrical tube with a front end and a rear end. The front end of the tube has a lens receiving cavity and a through working channel tube along the axial direction of the tube. The lens receiving cavity is located above the working channel tube. The cross-section of the lens receiving cavity is rectangular, and the cross-section of the working channel tube is circular. The lens receiving cavity and the working channel tube are interconnected. The lens receiving cavity includes two inner edges located inside the tube and an outer edge near the outside of the tube. The tube has two connecting grooves that connect to one of the outer edges. An annular mounting groove is provided on the outer wall of the rear end of the tube. The beneficial effects of this utility model are as follows: the instrument tube receiving cavity and the lens receiving cavity are staggered along the axial direction of the tube body, and the working channel tube forms an extension of the instrument tube receiving cavity. Furthermore, the outer edge of the lens receiving cavity is pierced. This allows the lens module to be set outward as much as possible while ensuring strength, thereby saving internal space to the greatest extent and making room for the instrument tube receiving cavity to meet the requirement of a maximum diameter of 1.1mm. The protective tube sleeved in the mounting groove can not only protect the part of the tube structure between the two connecting grooves, but also protect the connection between the snake bone and the front end head, effectively preventing the front end of the metal snake bone from forming a sharp structure. The protective tube can also form electromagnetic shielding protection.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a tip and endoscope. Background Technology

[0002] Endoscopes can enter the human body to observe lesions, take samples, administer medication, and perform other procedures, and are therefore widely used. Currently, see patent 202320389397.2, a disposable electronic endoscope includes a lens module, LEDs, and a working channel tube, etc. Due to the size of the square camera module, while meeting the requirement of a maximum outer diameter of 2.5mm, it cannot meet the requirement of a maximum diameter of 1.1mm for the working channel tube. Utility Model Content

[0003] The purpose of this invention is to provide an endoscope and a tip that solves or partially solves the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An end cap includes a cylindrical tube with a front end and a rear end. The front end of the tube has a lens receiving cavity and a through working channel tube along its axial direction. The lens receiving cavity is located above the working channel tube. The lens receiving cavity has a rectangular cross-section, and the working channel tube has a circular cross-section. The lens receiving cavity and the working channel tube are interconnected. The lens receiving cavity includes two inner edges located inside the tube and an outer edge near the outside of the tube. The tube has two connecting grooves that connect to one of the outer edges. An annular mounting groove is provided on the outer wall of the rear end of the tube.

[0006] Preferably, the inner wall of the tube has an inwardly protruding step near the rear of the lens receiving cavity.

[0007] Preferably, the rear end of the tube is provided with two LED receiving cavities symmetrically arranged along the axial direction of the tube and on both sides of the lens receiving cavity, and the tube is made of transparent or translucent material.

[0008] Preferably, the LED receiving cavity is connected to a frustum-shaped wire receiving cavity, the wire receiving cavity including a circular wire outlet located on the rear end face of the tube body.

[0009] Preferably, the cross-section of the lens receiving cavity is tangent to the cross-section of the working channel tube.

[0010] Preferably, the rear end of the tube body is provided with an instrument tube receiving cavity along the axial direction of the tube body, which is coaxial with the working channel tube and has a diameter larger than that of the working channel tube, and has a circular cross-section.

[0011] Preferably, a slot communicating with the instrument tube receiving cavity is formed below the instrument tube receiving cavity.

[0012] Preferably, the rear end of the tube body is provided with an expansion cavity along the axial direction of the tube body, the cross-section of the instrument tube receiving cavity is intersected by the cross-section of the expansion cavity, and the depth of the expansion cavity is less than the depth of the instrument tube receiving cavity.

[0013] Preferably, a plurality of slots are provided on the outer wall of the rear end of the tube.

[0014] This utility model also provides an endoscope, which further includes an instrument tube, a lens module disposed in the lens receiving cavity, a snake bone connecting the tip, and a protective tube sleeved in the mounting groove, wherein the wall thickness of the protective tube is the same as the depth of the mounting groove.

[0015] The beneficial effects of this utility model are as follows: the instrument tube receiving cavity and the lens receiving cavity are staggered along the axial direction of the tube body, and the working channel tube forms an extension of the instrument tube receiving cavity. Furthermore, the outer edge of the lens receiving cavity is pierced. This allows the lens module to be set outward as much as possible while ensuring strength, thereby saving internal space to the greatest extent and making room for the instrument tube receiving cavity to meet the requirement of a maximum diameter of 1.1mm. The protective tube sleeved in the mounting groove can not only protect the part of the tube structure between the two connecting grooves, but also protect the connection between the snake bone and the front end head, effectively preventing the front end of the metal snake bone from forming a sharp structure. The protective tube can also form electromagnetic shielding protection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the tip. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the tip. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the tip. Figure 3 ;

[0019] Figure 4 This is the left view of the tip;

[0020] Figure 5 It is the right view of the tip;

[0021] Figure 6 This is a three-dimensional structural diagram of an endoscope;

[0022] Figure 7 This is the right view of the endoscope;

[0023] Figure 8This is a schematic diagram of a half-section of an endoscope;

[0024] Figure 9 This is a partial structural diagram of a snake's skeleton. Detailed Implementation

[0025] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0026] In the description of this utility model, it should be noted that the terms "inner", "outer", "upper", "lower", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] like Figures 1 to 9 As shown, the tip of this utility model includes a cylindrical tube 10, which includes a front end and a rear end (with the front end of the endoscope as the front). The front end of the tube 10 has a lens receiving cavity 12 and a through working channel tube 14 along the axial direction of the tube 10. The lens receiving cavity 12 is located above the working channel tube 14 (here, the attachment is used as the reference). Figure 3 The placement shown determines the up and down orientation.

[0028] The lens housing cavity 12 has a square cross-section, and the working channel tube 14 has a circular cross-section; the lens housing cavity 12 and the working channel tube 14 are interconnected, thereby expanding the internal space.

[0029] The lens receiving cavity 12 includes two inner ridges located inside the tube body 10 and an outer ridge near the outside of the tube body 10. The tube body 10 is provided with two connecting grooves 18 that are respectively connected to one of the outer ridges. An annular mounting groove 20 is provided on the outer wall of the rear end of the tube body 10.

[0030] An inwardly protruding step 22 is provided on the inner wall of the tube 10 near the rear of the lens receiving cavity 12 to limit the lens module 46.

[0031] Two LED receiving cavities 24 are symmetrically arranged on both sides of the lens receiving cavity 12 along the axial direction of the tube body 10 at the rear end of the tube body 10. The tube body 10 is made of transparent or semi-transparent material to facilitate the passage of light.

[0032] The LED receiving cavity 24 is connected to a frustum-shaped wire receiving cavity 26, which includes a circular wire outlet (not labeled) located on the rear end face of the tube body 10.

[0033] The cross-section of the lens receiving cavity 12 is tangent to the cross-section of the working channel tube 14 and they are connected to expand the internal space.

[0034] The rear end of the tube body 10 is provided with an instrument tube receiving cavity 30, which is coaxial with the working channel tube 14 and has a diameter larger than that of the working channel tube 14, and has a circular cross-section.

[0035] A slot 32 is provided below the instrument tube receiving cavity 30 to communicate with the instrument tube receiving cavity 30.

[0036] An expansion cavity 34 is provided at the rear end of the tube body 10 along the axial direction of the tube body 10. The cross-section of the instrument tube receiving cavity 30 is intersected by the cross-section of the expansion cavity 34, and the depth of the expansion cavity 34 is less than the depth of the instrument tube receiving cavity 30.

[0037] The endoscope of this invention has the following structure: Three slots 36 are provided on the outer wall of the rear end of the tube body 10 to hold the forward-extending claws 40 of the snake bone 38. A protective tube 42 is then fitted onto the mounting slot 20 to protect the claws 40 and prevent them from protruding, forming a smooth external structure. The lens module 46 is arranged from front to back within the lens receiving cavity 12, and two LED lights 48 are arranged from back to front within the LED receiving cavity 24. The cable 50, which provides power to the lens module 46 and the LED lights 48, is arranged within the wire receiving cavity 26. The wire receiving cavity 26 has a front-larger, back-smaller structure because the cable 50 occupies little space, effectively limiting its movement and improving the overall structural strength. The instrument tube 52 is arranged within the instrument tube receiving cavity 30, and the working channel tube 14 communicates with the instrument tube receiving cavity 30 for easy access. Because the instrument tube 52 is a flexible structure, the slot 32 creates space to accommodate it when it is bent under stress. Because the depth of the expansion cavity 34 is less than the depth of the instrument tube receiving cavity 30, the inner wall of the instrument tube receiving cavity 30 forms an arc-shaped structure 54 that holds the instrument tube 52 in place.

[0038] The tip 8 of this invention not only provides sufficient internal space but also ensures sufficient strength. The endoscope of this invention has insulating adhesive applied to the joints of each component to strengthen the connection.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A tip comprising a cylindrical tube body, said tube body including a front end and a rear end, characterized in that, The front end of the tube body has a lens receiving cavity and a through working channel tube along the axial direction of the tube body, and the lens receiving cavity is located above the working channel tube; the cross-section of the lens receiving cavity is rectangular, and the cross-section of the working channel tube is circular; the lens receiving cavity and the working channel tube are interconnected; the lens receiving cavity includes two inner edges located inside the tube body and an outer edge near the outside of the tube body, and the tube body is provided with two connecting grooves that connect to one of the outer edges respectively; an annular mounting groove is provided on the outer wall of the rear end of the tube body.

2. The tip according to claim 1, wherein: The inner wall of the tube has an inwardly protruding step near the rear of the lens receiving cavity.

3. The tip according to claim 1, wherein: The tube body has two LED receiving cavities symmetrically arranged at its rear end along the axial direction of the tube body and on both sides of the lens receiving cavity. The tube body is made of transparent or translucent material.

4. The tip according to claim 3, characterized in that: The LED receiving cavity is connected to a frustum-shaped wire receiving cavity, which includes a circular wire outlet located on the rear end face of the tube body.

5. The tip according to claim 1, wherein: The cross-section of the lens receiving cavity is tangent to the cross-section of the working channel tube.

6. The tip according to claim 1, wherein: The rear end of the tube body is provided with an instrument tube receiving cavity along the axial direction of the tube body, which is coaxial with the working channel tube and has a diameter larger than that of the working channel tube, and has a circular cross-section.

7. The tip according to claim 6, wherein: A slot is provided below the instrument tube receiving cavity to connect to the instrument tube receiving cavity.

8. The tip according to claim 6, wherein: The rear end of the tube is provided with an expansion cavity along the axial direction of the tube. The cross-section of the instrument tube receiving cavity is intersected by the cross-section of the expansion cavity, and the depth of the expansion cavity is less than the depth of the instrument tube receiving cavity.

9. The tip according to claim 1, characterized in that: Several slots are provided on the outer wall of the rear end of the tube.

10. An endoscope comprising a tip according to one of claims 1 to 9, characterized in that: It also includes an instrument tube, a lens module disposed within the lens receiving cavity, a snake bone connecting the tip, and a protective tube fitted within the mounting groove, the wall thickness of which is the same as the depth of the mounting groove.

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