A digital endoscope with oblique focusing

Abstract

The present invention relates to the technical field of endoscopes, and discloses an oblique focusing digital endoscope, comprising a handle shell, a focusing ring sleeved on the handle shell, a focusing movable part threadedly connected to the focusing ring, a focusing assembly connected to the upper end of the focusing movable part, the focusing assembly comprising a connecting rod, a digital camera module mounted on the upper end of the connecting rod, a guide slide plate obliquely arranged on one side of the digital camera module, a photosensitive element arranged obliquely above the guide slide plate, and a guide shell sleeve fixedly connected to the digital camera module, a through hole obliquely arranged in the guide shell sleeve, a guide groove for the guide slide plate to slide on the inner wall of the through hole, a lens arranged at the upper end of the through hole in the axial direction, and the rotation of the focusing ring can make the photosensitive element move in the axial direction of the lens for fine adjustment, thereby realizing the oblique focusing of the endoscope. The digital endoscope of the present invention has a stable and reliable structure, is quick to produce and assemble, can focus and take pictures in an oblique direction, is easy to use, and provides new technical support for endoscopic inspection.

Description

Technical Field

[0001] The invention relates to the technical field of endoscopes, in particular to an oblique focusing digital endoscope. Background Art

[0002] An endoscope is a photographic device used for visual inspection of inaccessible places such as the human body cavity. It can enter the stomach through the mouth or other natural orifices into the body. Endoscopes can be used to see lesions that cannot be displayed by X-rays, so endoscopes are widely used in modern medical examinations. However, endoscopes in the prior art can only focus vertically. Therefore, when using an endoscope for medical examinations, medical staff need to hold the endoscope so that the lens is directly facing the inspection site. Due to the complex structure of the human body cavity, when encountering a complex cavity, the operation of an endoscope with this structure is inconvenient, and it is even impossible to extend into the complex cavity for photographing and inspection. Therefore, it is necessary to provide a digital endoscope that is easy to use and can focus obliquely. Summary of the invention

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an oblique focusing digital endoscope.

[0004] To solve the above technical problems, the present invention is implemented through the following scheme: an oblique focusing digital endoscope, including a handle shell, the handle shell includes a connecting part and a hand-held part integrally formed in an upper and lower part, the upper end of the connecting part is threadedly connected to an upper cover, the lower end of the hand-held part is snap-connected to a tail cover, a focusing ring is sleeved on the connecting part below the upper cover, the upper end of the upper cover is fixedly connected to a metal tube, the shell wall of the connecting part is symmetrically provided with grooves, a focusing movable part is arranged in the connecting part, both ends of the focusing movable part pass through the grooves and are threadedly connected to the internal threads of the focusing ring, the upper end of the focusing movable part is connected to a focusing assembly, and the focusing assembly is arranged in the metal tube, including a connecting rod, a digital camera module mounted on the upper end of the connecting rod, A guide slide plate obliquely arranged on one side of a digital camera module, a photosensitive element arranged obliquely above the guide slide plate, and a guide shell sleeve fixedly connected to the digital camera module, wherein an obliquely arranged through hole is arranged in the guide shell sleeve, and a guide groove for sliding the guide slide plate is arranged on the inner wall of the through hole, and a lens is arranged at the upper end in the axial direction of the through hole, and the photosensitive element can be fine-tuned and moved along the axial direction of the lens by rotating the focusing ring, thereby realizing oblique focusing of the endoscope; the range of the angle β between the through hole of the guide shell sleeve and the axial direction of the metal tube is 0°<β<90°, and the front end face of the guide shell sleeve is provided with a groove, and an LED light board is arranged in the groove; the upper end face of the lens is parallel to the upper end face of the metal tube, and the lens and the photosensitive element are coaxially and parallelly arranged.

[0005] Furthermore, the inner wall of the hand-holding part of the handle housing is symmetrically provided with inner grooves, a PCB circuit board is clamped on the inner groove, the lower end of the PCB circuit board is connected to a transmission interface, a single-chip microcomputer and a plurality of function keys are connected to the PCB circuit board, and the transmission interface is electrically connected to the single-chip microcomputer; the transmission interface passes through the tail cover to be exposed to the outside.

[0006] Furthermore, limiting bumps are provided on both sides of the lower end of the PCB circuit board, and the PCB circuit board is limited in upward movement by the limiting bumps, and the PCB circuit board is limited in downward movement by the tail cover.

[0007] Furthermore, the focus adjusting movable member includes an adjusting plate and a connecting block fixedly connected to the adjusting plate, the upper end of the connecting block is provided with a through hole for inserting a connecting rod, and both sides of the connecting block are provided with screws for locking the connecting rod.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: there is a certain angle between the guide shell of the endoscope of the present invention and the axial direction of the metal tube. The focusing movable part is driven by the rotation of the focusing ring to pull the guide slide, so that the photosensitive element on the guide slide can only move along the axial direction of the lens. While maintaining a good optical relationship and imaging effect, oblique focusing observation is achieved, so that the endoscope can be turned obliquely for shooting and observation, which is more convenient and flexible to use, can meet the shooting needs of various complex cavities, and provides new technical support for endoscopic inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the exploded structure of the digital endoscope of the present invention;

[0010] Figure 2 It is a schematic diagram of the three-dimensional structure of the digital endoscope of the present invention;

[0011] Figure 3 It is a schematic diagram of the partial structure of the digital endoscope of the present invention;

[0012] Figure 4 This is an enlarged view of point A of the digital endoscope of the present invention;

[0013] Figure 5 It is a schematic diagram of the three-dimensional structure of the focusing movable part of the digital endoscope of the present invention;

[0014] Figure 6 This is a schematic diagram of the application scenario of the digital endoscope of the present invention; DETAILED DESCRIPTION

[0015] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention. Example

[0016] See attached Figures 1 to 5 The present invention discloses an oblique focusing digital endoscope, comprising a handle shell 1, wherein the handle shell 1 comprises a connecting portion 1A and a hand-held portion 1B integrally formed at the upper and lower ends, wherein the upper end of the connecting portion 1A is threadedly connected to an upper cover 2, and the lower end of the hand-held portion 1B is snap-connected to a tail cover 3, and a focusing ring 4 is sleeved on the connecting portion 1A below the upper cover 2, and a metal tube 5 is fixedly connected to the upper end of the upper cover 2, and a shell wall of the connecting portion 1A is symmetrically provided with grooves, and a focusing movable member 6 is provided in the connecting portion 1A, and both ends of the focusing movable member 6 pass through the grooves and the internal threaded screws of the focusing ring 4. The upper end of the focusing movable member 6 is connected with a focusing assembly, which is arranged in the metal tube 5 and includes a connecting rod 7, a digital camera module 8 mounted on the upper end of the connecting rod 7, a guide slide 9 obliquely arranged on one side of the digital camera module 8, a photosensitive element 10 arranged obliquely above the guide slide 9, and a guide shell 11 fixedly connected to the digital camera module 8. An oblique through hole 12 is arranged in the guide shell 11, and a guide groove 13 for the guide slide 9 to slide is arranged on the inner wall of the through hole 12. A lens 14 is arranged at the upper end of the through hole 12 in the axial direction.

[0017] See attached Figure 3 , 4 In order to realize the oblique angle shooting of the endoscope, the axial direction of the lens 14 needs to form a certain angle with the axial direction of the handle shell 1. Therefore, in the embodiment of the present invention, the axial angle β between the through hole 12 of the guide shell 11 and the metal tube 5 is set to 30°, and when the guide slide plate 9 slides in the guide groove 13 in the guide shell 11, the lens 14 always remains coaxial and parallel to the photosensitive element 10, thereby ensuring a good optical relationship and imaging effect, and the upper end surface of the lens 14 is parallel to the upper end surface of the metal tube 5. This structural design can effectively prevent the lens 14 from being blocked by the metal tube 5 and the image light from entering the lens 14, further ensuring a good optical relationship and imaging effect.

[0018] In the embodiment of the present invention, the inner wall of the hand-held portion 1B of the handle housing 1 is symmetrically provided with inner grooves, on which a PCB circuit board 16 is clamped, and a transmission interface 17 is connected to the lower end of the PCB circuit board 16, and a single-chip computer 18 and two function buttons 19 are connected to the PCB circuit board 16. The transmission interface 17 is electrically connected to the single-chip computer 18 and is exposed to the outside through the tail cover 3. The transmission interface 17 is connected to an external terminal for power supply and image display transmission; wherein the function buttons 19 include a shooting control button and a light brightness adjustment button.

[0019] like Figure 4As shown, in the embodiment of the present invention, the front end surface of the guide shell 11 is provided with a groove, and an LED light board 15 is provided in the groove. The LED light board 15 is connected to an LED lamp, and the LED light board 15 is electrically connected to the single-chip computer 18, and the working power of the LED lamp has three gears: low gear, medium gear, and high gear. The gear can be switched by clicking the light brightness adjustment button, thereby realizing the brightness adjustment of the LED lamp to meet the shooting fill light requirements of different inner cavity environments.

[0020] like Figure 1 As shown, in the embodiment of the present invention, limiting protrusions 20 are provided on both sides of the lower end of the PCB circuit board 16, and the PCB circuit board 16 is limited in upward movement by the limiting protrusions 20, and the PCB circuit board 16 is limited in downward movement by the tail cover 3, so that the PCB circuit board 16 is fixed in the inner groove of the handle housing 1, thereby ensuring the stability of the PCB circuit board 16.

[0021] like Figure 5 As shown, the focus movable member 6 includes an adjustment plate 61 and a connecting block 62 fixedly connected to the adjustment plate 61. The connecting block 62 can be arranged on one side or in the middle of the adjustment plate 61 and is configured according to mold opening cost considerations. In the preferred embodiment, the connecting block 62 is arranged on one side of the adjustment plate 61, and a through hole for inserting the connecting rod 7 is provided at the upper end of the connecting block 62, and screws 63 for locking the connecting rod 7 are provided on both sides of the connecting block 62. Threads are provided at both ends of the adjustment plate 61, and the threads are matched and connected with the internal threads of the focusing ring 4.

[0022] When in use, the digital endoscope of the present invention needs to be used in conjunction with an external terminal device. The shooting is controlled by the shooting control button. The lens 14 captures the scene image and displays it in real time through the terminal device. When focusing is required, the focusing ring 4 is rotated left or right, and the focusing movable member 6 moves up or down under the action of the threaded transmission. When the focusing movable member 6 moves up or down, the guide slide 9 is pulled by the force transmission action of the connecting rod 7, so that the guide slide 9 slides in the guide groove 13 in the guide shell 11, thereby moving the photosensitive element 10 along the axial direction of the lens 14. The oblique focusing of the endoscope is realized through this adjustment principle. Example

[0023] Due to the complex structure of the human body cavity, the endoscope of the traditional technology cannot conveniently and quickly perform photo inspection, and may cause certain damage to the human body cavity. However, the oblique focusing digital endoscope of the present invention can realize the rapid photo inspection of the complex cavity. The embodiment of the present invention is explained through the following typical application scenarios:

[0024] (1) Inspection of curved inner cavity: When it is necessary to inspect the inner condition of the curved inner cavity, the digital endoscope of the present invention can be inserted into the entrance of the curved inner cavity and the focus can be adjusted according to the actual photographing conditions. Figure 6As shown in B, since the lens 14 is tilted and can be focused obliquely, the shooting range of the inner area of ​​the curved cavity is increased without causing damage to the mucous membrane of the cavity.

[0025] (2) Inspection of the inner wall of the lumen mucosa: When it is necessary to inspect the inner wall of the lumen mucosa, the digital endoscope of the present invention can be inserted into the lumen along the lumen pipe and the lens 14 can be directed toward the upper wall, lower wall, left wall or right wall of the lumen. Figure 6 As shown in C, due to the tilted setting of the lens 14 and the ability to focus obliquely, the full range of the inner cavity can be observed conveniently and directly, while the traditional endoscope needs to constantly adjust the observation angle, which can easily cause damage to the inner cavity mucosa.

[0026] The digital endoscope of the present invention has a stable and reliable structure, is quick to produce and assemble, can be focused and photographed in an oblique direction, is easy to use, and provides new technical support for endoscopic inspection.

[0027] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An oblique focusing digital endoscope, comprising a handle housing (1), the handle housing (1) comprising a connecting portion (1A) and a hand-held portion (1B) integrally formed at the top and bottom, the upper end of the connecting portion (1A) being threadedly connected to an upper cover (2), the lower end of the hand-held portion (1B) being snap-connected to a tail cover (3), a focusing ring (4) being sleeved on the connecting portion (1A) and located below the upper cover (2), a metal tube (5) being fixedly connected to the upper end of the upper cover (2), and grooves being symmetrically provided on the shell wall of the connecting portion (1A), Features: A focus movable member (6) is provided in the connection portion (1A), and both ends of the focus movable member (6) pass through the slots and are threadedly connected to the internal threads of the focus ring (4). The upper end of the focus movable member (6) is connected to a focus assembly, and the focus assembly is arranged in the metal tube (5), comprising a connecting rod (7), a digital camera module (8) mounted on the upper end of the connecting rod (7), a guide slide plate (9) obliquely arranged on one side of the digital camera module (8), a photosensitive element (10) arranged obliquely above the guide slide plate (9), and a guide shell (11) fixedly connected to the digital camera module (8), wherein an obliquely arranged through hole (12) is provided in the guide shell (11), and the through hole (12) The inner wall is provided with a guide groove (13) for the guide slide plate (9) to slide, and a lens (14) is provided at the upper end of the through hole (12) in the axial direction. The focusing ring (4) can be rotated to make the photosensitive element (10) move in a fine adjustment along the axial direction of the lens (14), thereby realizing oblique focusing of the endoscope; the range of the axial angle β between the through hole (12) of the guide shell (11) and the metal tube (5) is 0°<β<90°, and the front end surface of the guide shell (11) is provided with a groove, and the LED light board (15) is provided in the groove; the upper end surface of the lens (14) is parallel to the upper end surface of the metal tube (5), and the lens (14) and the photosensitive element (10) are coaxially and parallelly arranged.

2. The oblique focusing digital endoscope according to claim 1, Features: The inner wall of the hand-held portion (1B) of the handle housing (1) is symmetrically provided with inner grooves, a PCB circuit board (16) is clamped on the inner groove, a transmission interface (17) is connected to the lower end of the PCB circuit board (16), a single-chip computer (18) and a plurality of function keys (19) are connected to the PCB circuit board (16), and the transmission interface (17) is electrically connected to the single-chip computer (18); the transmission interface (17) passes through the tail cover (3) and is exposed to the outside.

3. The oblique focusing digital endoscope according to claim 2, Features: Limiting bumps (20) are provided on both sides of the lower end of the PCB circuit board (16); the PCB circuit board (16) is limited in upward movement by the limiting bumps (20); and the PCB circuit board (16) is limited in downward movement by the tail cover (3).

4. The oblique focusing digital endoscope according to claim 1, Features: The focus adjustment movable member (6) comprises an adjustment plate (61), a connecting block (62) fixedly connected to the adjustment plate (61), a through hole for inserting a connecting rod (7) being provided at the upper end of the connecting block (62), and screws (63) for locking the connecting rod (7) being provided on both sides of the connecting block (62).

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