An electronic arthroscopy with adjustable viewing angle

Abstract

This invention discloses an adjustable-viewpoint electronic arthroscopy. The head of the arthroscopy core has a cavity extending through both ends. A rotating component is rotatably mounted within the cavity, and a camera module is housed within the rotating component. A handle contains a rotation operation component for controlling the rotating component to switch between a first position, a second position, and any angular position between the first and second positions. In the first position, the optical axis of the camera module is parallel to the axis of the arthroscopy core. In the second position, the optical axis of the camera module forms a first angle with the axis of the arthroscopy core. Within the angular range between the first and second positions, the cavity has an opening, and light sources are located on the walls on both sides of the opening. By incorporating a controllable rotating component at the head of the arthroscopy core and encapsulating the camera module within it, the rotating component drives the camera module to rotate, thereby adjusting the shooting angle. This allows for multi-angle observation of the lesion location without replacing the arthroscopy core.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to an electronic arthroscopy with adjustable viewing angle. Background Technology

[0002] An endoscope is a device equipped with an imaging instrument at its tip, which is inserted into the body through natural openings or a small surgical incision. When used, the endoscope is guided into the organ to be examined, allowing direct visualization of the affected area. This helps doctors to conduct a more comprehensive examination of the cavity and perform surgery when appropriate, greatly improving the safety of the procedure.

[0003] Endoscopes are mainly divided into two types: rigid endoscopes and flexible endoscopes.

[0004] Rigid endoscopes consist of three main parts: image transmission, illumination, and venting. The image transmission section comprises an optical module consisting of an objective lens, a relay system, and an eyepiece to transmit images. The illumination section uses a cold light source with fiber optic cables running through it. Venting is present only in some endoscopes and is used for air supply, water supply, and passage of biopsy forceps. Rigid endoscope products include arthroscopes, hysteroscopes, thoracoscopes, rectoscopes, and endoscopes. Arthroscopes require an external sheath for water passage.

[0005] Flexible endoscopes are mostly those that use fiber optic beams for image transmission and guidance or CCDs for image transmission. Due to their excellent flexibility and ease of operation, they are widely used in medicine. Current products include gastroscopes, duodenoscopes, colonoscopes, cholangioscopes, enteroscopes, bronchoscopes, nasopharyngoscopes, and ureteroscopes. The main advantage of flexible endoscopes is their flexibility, allowing easy access to complex internal organs, reducing patient discomfort, and reaching areas inaccessible to rigid endoscopes. The flexible guide mechanism of the endoscope tip can also eliminate blind spots to some extent.

[0006] Flexible endoscopes can be further divided into fiber optic endoscopes and electronic endoscopes.

[0007] Fiberoptic endoscope structure: Tip, bend, insertion section, operating section, flexible light guide tube, light guide connector, and eyepiece. The tip is a rigid short segment, available in direct (forward), side-view, and oblique viewing modes. Gastroscopes and colonoscopes use direct viewing, while duodenoscopes and esophagoscopes use side-view. The tip has: objective lens aperture (image guide), light aperture (beam guide), air / water nozzle, and biopsy aperture. The bend uses a wire traction method; a wire connects the head to the handle. Turning the control wheel on the handle pulls the wire in different directions, causing the bend to swing in the corresponding direction. The bend contains the beam guide, image guide, various tubes, traction device, bend tube, and bend rubber. The flexible tube section includes the bend and insertion sections, also called the snake tube. It contains the beam guide, image guide, air / water tubes, biopsy tube (also used as a suction tube), and traction wire, encased in stainless steel flexible tubing and metal mesh, with a smooth plastic sheath on the outermost layer. The image transmission system of a fiber optic endoscope consists of fiber bundles composed of tens of thousands of extremely fine glass fibers. Based on the principle of total internal reflection in optics, all glass fibers must be coated with a low-refractive-index film to ensure that all light transmitted through the core fibers undergoes total internal reflection. A single fiber can only produce a single point of light; to visualize an image, a large number of fibers must be bundled together. To transmit the same image to the other end, each fiber must be positioned identically at both ends, forming a guide bundle. If a guide bundle breaks, an additional black dot appears in the image. The beam itself does not need to be aligned identically; breaking many fibers significantly reduces brightness. Therefore, this image transmission method places high demands on the manufacturing process of the fiber bundles and the preservation of the endoscope. Damage to the fiber bundles directly affects the imaging quality of the endoscope, which is the current imaging method used in traditional arthroscopy.

[0008] Electronic endoscopes use a CCD (Computer-Aided Disc) instead of an image guide to transmit image signals, which are then processed and converted into video signals by an image processing center. The CCD solid-state imaging device is called a CCD image sensor. Its structure consists of many photodiodes (pixels) arranged on a silicon substrate, which convert the imaging light into electrical signals, which are then transmitted to obtain the image signal. The structure of an electronic endoscope is basically the same as that of a fiber optic endoscope; simply put, it uses a CCD instead of an image guide. It offers many functions that fiber optic endoscopes cannot achieve. Electronic endoscopes have advantages such as clear images, ease of observation, and low manufacturing costs, and are currently one of the development directions of endoscopes.

[0009] With the development of semiconductor technology, integrated circuit technology and image sensors, the module size of endoscope cameras has become smaller and smaller, and the pixel count has become higher and higher, gradually replacing the traditional method of transmitting images through optical fibers.

[0010] Arthroscopy is a type of medical endoscope. It is a rod-shaped optical instrument used to observe the internal structure of joints. It is used to diagnose and treat joint diseases. Traditional endoscopes are mostly rigid fiber optic imaging endoscopes.

[0011] The following problems exist when using currently available arthroscopy for surgery: the tilt angle of the objective lens of existing arthroscopy is fixed, resulting in a limited field of view and blind spots during surgery. To obtain a wider field of view, multiple arthroscopy lenses with different tilt angles are often used alternately during surgery to observe the patient's joint, which reduces surgical efficiency, causes significant inconvenience to the surgeon, and increases surgical costs. Therefore, it is necessary to develop an electronic arthroscopy with adjustable viewing angle to solve the above problems. Summary of the Invention

[0012] In view of at least one of the aforementioned technical problems, the present invention aims to provide an adjustable-angle electronic arthroscopy, wherein the shooting angle of the camera module can be adjusted according to actual needs.

[0013] The technical solution of this invention is:

[0014] One objective of this invention is to provide an adjustable-view electronic arthroscopy, comprising a sheath, a core, and a handle. The end of the core away from the sheath and the handle is configured as a core head. A cavity is formed in the core head that extends through both ends. A rotating component is rotatably disposed within the cavity, and a camera module is disposed within the rotating component.

[0015] The handle is provided with a rotating operation component for controlling the rotating component to switch between a first position and a second position, as well as any angle position between the first position and the second position;

[0016] In the first position, the optical axis of the camera module is parallel to the axis of the mirror core; in the second position, the optical axis of the camera module forms a first angle with the axis of the mirror core.

[0017] Within the angular range between the first position and the second position, each cavity has an opening and a light source is provided on the wall surface on both sides of the opening of the cavity.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] This invention discloses an adjustable-view electronic arthroscopy. A controllable rotating component is incorporated into the head of the arthroscopy lens, and a camera module is encapsulated within this rotating component. The rotating component drives the camera module to rotate, thereby adjusting the viewing angle. This allows for multi-angle observation of lesions without replacing the arthroscopy lens, solving the problem of limited viewing angles in traditional arthroscopy. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a three-dimensional structural diagram of an adjustable-view electronic arthroscopy according to an embodiment of the present invention.

[0022] Figure 2 This is a cross-sectional structural diagram of an adjustable-view electronic arthroscope according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the core of the adjustable-view electronic arthroscope according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the core (rotating component in the first position) of the adjustable-view electronic arthroscope according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the core (rotating component in the second position) of the adjustable-view electronic arthroscope according to an embodiment of the present invention.

[0026] Figure 6 for Figure 3 A magnified schematic diagram of part A of the middle mirror core;

[0027] Figure 7 This is a cross-sectional schematic diagram of the head of the adjustable-view electronic arthroscope according to an embodiment of the present invention.

[0028] Figure 8 This is a three-dimensional structural diagram of the sheath of the adjustable-view electronic arthroscopy according to an embodiment of the present invention, showing one angle.

[0029] Figure 9 for Figure 8 A magnified schematic diagram of a portion of section B in the middle;

[0030] Figure 10 This is a three-dimensional structural diagram of the sheath of the adjustable-view electronic arthoscope according to an embodiment of the present invention from another angle.

[0031] Figure 11 This is a schematic diagram of the mounting sheath and end cap of an adjustable-view electronic arthroscope according to an embodiment of the present invention.

[0032] Figure 12 The schematic diagram of the handle of the adjustable-view electronic arthroscope according to an embodiment of the present invention omits half of the outer shell.

[0033] Figure 13 This is a schematic diagram of the rotating gear of an adjustable-view electronic arthroscope according to an embodiment of the present invention;

[0034] Figure 14 This is a schematic diagram of the crank-connecting rod mechanism consisting of the operating rod, rotating component, and rotating operating component of the adjustable-view electronic arthroscope according to an embodiment of the present invention.

[0035] The components include: 1. Lens core; 11. Lens core head; 111. Cavity; 112. Rotating component; 1120. Arc end; 1121. Connecting protrusion; 1122. First through hole; 113. Camera module; 114. Light source; 115. First horizontal rotating shaft; 12. Middle lens tube; 13. Fixing head; 131. Double-ear structure; 132. Groove; 1321. Axial groove; 1322. Circumferential groove; 1323. Positioning circular groove; 14. Control rod; 15. Rotating operating component; 50. Second through hole; 151. Actuating wheel; 152. Rotating gear; 153. Second horizontal shaft; 154. Third horizontal shaft; 155. Notch; 2. Mirror sheath; 21. Sheath tube; 210. Observation port; 211. Water outlet; 22. Connector; 220. End cap; 221. Water inlet; 222. Water outlet; 223. Water inlet valve; 224. Water outlet valve; 23. Mounting sheath; 231. Positioning protrusion; 232. Limiting ring wall; 24. Sealing ring; 3. Handle; 31. Adapter circuit board; 32. Recessed structure; 4. Control box; 5. Display; 6. Button panel. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0037] An adjustable-view electronic arthroscopy according to an embodiment of the present invention, see [link to relevant documentation]. Figures 1 to 14The system mainly includes a mirror core 1, a mirror sheath 2, and a handle 3. The mirror core 1 is coaxially connected to three parts: a head, a central tube 12, and a fixing head 13. The central tube 12, fixing head 13, and head of the mirror core 1 are all axially connected. The fixing head 13 is used to fix the mirror sheath 2 and handle 3. The mirror sheath 2 consists of a sheath tube 21 that can coaxially fit the central tube 12, a connector 22 at one end of the sheath tube 21, and a mounting sheath 23 installed at the end of the connector 22 away from the sheath tube 21. The end of the sheath tube 21 away from the connector 22 has an observation window to allow the camera module 113 and light source 114 in the head of the mirror core 1 to function properly. The connector 22 has an inlet 221 and an outlet 222 at its front and rear ends, respectively connected to an inlet valve 223 and an outlet valve 224. A sealing ring 24 is installed inside the connector 22. The mounting sheath 23 and the connector 22 are detachably connected. The head of the lens core 1 is inserted into the connection point between the mounting sheath 23 and the connector 22. One end of the fixing head 13 is inserted into the end of the mounting sheath 23 away from the connector 22, and the other end of the fixing head 13 is inserted into the handle 3 and fixedly connected to the handle 3. More specifically, the head of the lens core 1 has a cavity 111, which opens towards the outer end of the head of the lens core 1 and also opens towards the bottom of the head of the lens core 1. A rotating component 112 is rotatably disposed within the cavity 111, and a camera module 113 is encapsulated within the rotating component 112. The handle 3 is provided with a rotation operation component 15 for controlling the rotation component to switch between a first position, a second position, and any angle position between the first and second positions. By controlling the rotation of the rotating component 112 through the rotation control component, the shooting angle of the camera module 113 within the rotating component 112 is adjusted, thereby achieving the purpose of adjusting the shooting angle according to actual needs and improving the field of view. In the first position, the optical axis of the camera module 113 is parallel to the axis of the mirror core 1. In the second position, the optical axis of the camera module 113 forms a first angle with the axis of the mirror core 1, for example, 90°. That is, by rotating the operating component 15, the rotating component 112 can be driven to rotate the camera module 113 within the range of 0-90°. In order to facilitate better shooting light for the camera module 113 within the joint cavity, a light source 114, such as an LED light source 114, is also provided on the head of the mirror core 1.

[0038] According to some preferred embodiments of the present invention, such as Figures 4 to 5 As shown, the rotating component 112 is implemented as a bracket with an arc-shaped end 1120 and a hollow interior, to facilitate the encapsulation of the camera module 113. The arc-shaped end 1120 faces the sheath 2 and the handle 3, i.e. Figure 5 The top shown or as Figure 4 The right end shown is provided and rotatably connected to the inner wall of the cavity 111 via a first horizontal rotating shaft 115. For example... Figure 7As shown, the rotating operating component 15 and the rotating component 112 are connected by a control rod 14. The connection point between the control rod 14 and the rotating component 112 is located on the bottom wall surface of the rotating component 112 and is away from the arc end 1120, i.e. Figure 7 As shown, the rotating component 112 is connected to the head of the mirror core 1 at the right end, while the connection point between the control lever 14 and the rotating component 112 is closer to the left end. This design makes the rotation of the rotating component 112 easier to perform. Preferably, as shown... Figure 7 As shown, the control lever 14 includes a rod body parallel to the axis of the mirror core 1 and a first bent rod and a second bent rod (not shown) formed at both ends of the rod body. Figure 4 and Figure 7 As shown, the bottom of the rotating component 112 is provided with a downwardly extending connecting protrusion 1121, and a first through hole 1122 is opened on the connecting protrusion 1121. The first bent rod is adapted to be horizontally inserted into the first through hole 1122.

[0039] According to some preferred embodiments of the present invention, such as Figure 2 and Figure 12 As shown, the rotating operating component includes a toggle wheel 151 and a rotating gear 152. A clearance hole (not shown) is provided on the handle 3. The toggle wheel 151 is rotatably connected to the inner wall of the clearance hole via a second horizontal rotating shaft 153, and partially extends outside the clearance hole. The rotating gear 152 is rotatably mounted inside the handle 3 via a third horizontal rotating shaft 154, and meshes with the toggle wheel 151. A second through hole 150 is provided on the rotating gear 152. The axis of the second through hole 150 is parallel to the axis of the first through hole 1122. A second bent rod at the other end of the control lever 14 horizontally passes through the second through hole 150. The second through hole 150 and the third horizontal rotating shaft 154 are eccentrically positioned. With this design, when the rotating gear 152 rotates, it pulls the control lever 14, thereby controlling the rotation of the camera module bracket, i.e., the rotating component 112. Figure 12 As shown, the meshing teeth on the actuating wheel 151 are only provided on half of the outer circumference of the actuating wheel 151; the other half is for the operator to rotate the actuating wheel 151, and only the other half is provided with wavy lines to increase roughness and facilitate the application of force to rotate it. Figure 13 As shown, the rotating component 150 is in the first position at this time. A recess 155 is formed on one axial end face of the rotating gear 152, extending along its axial direction. This recess 155 is approximately fan-shaped, meaning the two side walls of the recess 155 form a second included angle, preferably 90°. It should be noted that because the second through hole 150 is eccentrically positioned with the third horizontal rotating shaft 154, the lengths of the two side walls of the recess 155 are not equal, but rather one is longer than the other. For ease of description and distinction, the longer side wall is referred to as... Figure 13The sidewall to the right of the second through hole 150 shown is described as the first sidewall, and the shorter sidewall is also as follows: Figure 13 The sidewall below the second through hole 150 is described as the second sidewall. The axis of the third horizontal rotating shaft 154 lies on one of the sidewalls and has a distance between its intersection with the two sidewalls. Specifically, the axis of the third horizontal rotating shaft 154 is on the first sidewall, more specifically, above and to the right of the second through hole 150. When the rotating component 112 is in the first position, i.e., when the rotating component 112 is parallel to the axis of the mirror core 1, the rod of the control rod 14 is parallel to one of the sidewalls, specifically the second sidewall, and there is a gap between the rod and the second sidewall; similarly, when the rotating component 112 is in the second position, i.e., when the rotating component 112 is perpendicular to the axis of the mirror core 1, the rod of the control rod 14 is parallel to the other sidewall, i.e., the first sidewall, or as shown in the diagram. Figure 13 The sidewall below the second through hole 150 and the gap between the rod and the first sidewall also have a gap, which can prevent interference between the rod of the control rod 14 and the two sidewalls of the recess 155 during the rotation of the rotating component 112. More preferably, in the same plane, the line connecting the axis of the first through hole 1122 and the axis of the first horizontal rotating shaft 115, the line connecting the axis of the control rod 14 and the axis of the second through hole 150 and the axis of the third horizontal rotating shaft 154 constitutes a crank-rocker mechanism, and the length of the line connecting the axis of the first through hole 1122 and the axis of the first horizontal rotating shaft 115 is equal to the length of the line connecting the axis of the second through hole 150 and the axis of the third horizontal rotating shaft 154. Specifically, as shown... Figure 14 As shown, the axis position of the first horizontal rotating shaft is marked as D, the axis position of the first through hole is marked as A, the axis position of the second through hole is marked as B, and the axis position of the third horizontal rotating shaft is marked as C. That is, the line connecting the axis of the first through hole 1122 and the axis of the first horizontal rotating shaft 115 is AD, the axis of the control rod 14 is AB, and the line connecting the axis of the second through hole 150 and the axis of the third horizontal rotating shaft 154 is BC. AD=BC and AB=CD. When the rotating component 112 is in the first position, as... Figure 14 As shown by the solid line; when the rotating component 112 is in the second position, as Figure 14 As shown by the dashed line, point A is rotated to position A', and point B is rotated to position B'. Preferably, ∠ADA' = 90°, and ∠BCB' = 90°.

[0040] like Figure 4 and Figure 5 As shown, in this embodiment of the invention, there are four light sources 114, arranged in pairs. One pair of light sources 114 is located on both sides of the rotating component 112 in the first position, as shown in the diagram. Figure 4 The left and right sides of the front end of the head of the mirror core 1 shown are also the sides of the other set of rotating parts 112 in the second position. Figure 4 The front and rear sides of the bottom end of the head of the mirror core 1 are shown. As an alternative embodiment, the number of light sources 114 can also be other numbers, such as six, eight, etc., and one or more sets of light sources 114 can also be set at other angular positions between the first position and the second position.

[0041] According to some preferred embodiments of the present invention, such as Figure 3 and Figure 6 As shown, the fixing head 13 is provided with a first connecting structure for connecting to the handle 3 and a second connecting structure for connecting to the mirror sheath 2. Figure 3 As shown, the first connection structure is located at the end of the fixing head 13 furthest from the intermediate lens tube 121, i.e. Figure 3 The right end shows two symmetrically distributed, outwardly protruding auricle structures 131 on its outer wall surface. Correspondingly, as... Figure 12 As shown, the inner wall of the handle 3 has a recessed structure 32 that matches the double-ear structure 131. As an alternative embodiment, the first connecting structure can also be located at the end of the fixing head 13 furthest from the intermediate lens tube 12, i.e., as shown... Figure 3 The right end of the outer wall has two symmetrically distributed, inwardly recessed structures 32. Correspondingly, the inner wall of the handle 3 has a radially inwardly protruding protrusion that matches the recessed structures 32 on the fixing head 13. The double-ear structure 131 engages with the recessed structures 32 to achieve a snap-fit ​​connection; the structure is simple and the connection is reliable. Figure 6 As shown, the second connecting structure is a groove 132 formed on the outer wall surface of the fixed head 13 near the middle lens tube 12. The groove 132 includes an axial groove 1321 extending along the axis of the fixed head 13 and a circumferential groove 1322 extending circumferentially from one end of the axial groove 1321 along the outer peripheral wall of the fixed head 13. A positioning circular groove 1323 is formed at the end of the circumferential groove 1322 away from the axial groove 1321. That is, the groove 132 is an L-shaped groove 132. Figure 10 and Figure 11 As shown, the inner wall of the mirror sheath 2 is provided with a positioning protrusion 231, such as a cylindrical pin, that slides with the groove 132 and matches the positioning groove 1323.

[0042] like Figures 8 to 10As shown, the front end of the sheath 21 has an observation port 210 that avoids the head of the mirror core 1, and the outer wall of the sheath 21 has several water outlet holes 211 around its circumference for filling the joint cavity with fluid. The size of the observation port 210 is determined according to the camera module 113, preferably without interfering with the shooting angle of the camera module 113, and its shape is not limited, such as elliptical. Connector 22 is connected to the intermediate endoscope tube 12 and has an internal cavity. The rear end of the sheath tube 21 is connected to the front end of connector 22, and the water outlet 211 communicates with the cavity. The rear end of connector 22 is provided with a detachable end cap 220. A sealing ring 24 is provided on the front surface of the end cap 220, and the rear end of the end cap 220 is connected to a mounting sheath 23 coaxial with the sheath tube 21. A positioning protrusion 231 is provided on the inner wall surface of the mounting sheath 23. The sealing ring 24 is squeezed and expanded by the end cap 220 and tightly fitted onto the outer periphery of the intermediate endoscope tube 12, ensuring that the liquid will not flow back to the end when the inlet / outlet valve 224 is opened. The axial sides of connector 22 are also as follows: Figure 7 The front and rear sides are provided with water inlets 221 and water outlets 222, and water inlets 221 and water outlets 222 are respectively provided with water inlet valves 223 and water outlet valves 224. Preferably, as shown... Figure 11 As shown, the end cap 220 and the mounting sheath 23 are an integral structure.

[0043] According to some embodiments of the present invention, since the inner diameter of the intermediate lens tube 12 of the lens core 1 is relatively small, the outer diameter of the wires (not shown) of the camera module 113 and the light source 114 is also relatively small, making them unsuitable for exposure. Therefore, an adapter plate is needed to connect the wires of the camera module 113 and the light source 114 to the thicker handle 3 wire, thereby electrically connecting them to the control box 4. Specifically, as shown... Figure 12 As shown, the handle 3 contains an adapter circuit board 31 and a handle 3 cable (not shown). The handle 3 cable is electrically connected to the adapter circuit board 31, and the handle 3 cable is electrically connected to the control box 4 via an aviation connector. The wires of the camera module 113 and the light source 114 are both electrically connected to the adapter circuit board 31, and the handle 3 cable is thicker than both the wires of the camera module 113 and the light source 114. Preferably, in this embodiment of the invention, the light source 114 and the camera module 113 are integrated together, sharing a single wire. This shared wire connects the light source 114 to the adapter circuit board 31, eliminating the need for an additional light source 114 cable and device, making operation more convenient.

[0044] like Figure 1As shown, the adjustable-view electronic arthroscopy of this embodiment further includes a control box 4, a display 5, and a keypad 6. The display 5 is used to display real-time images from the camera module 113. The keypad 6 is used to control image zooming, image saving, white balance, brightness of the light source 114, etc. The control box 4 contains an image processing board (not shown) for the camera module 113. The image processing board is electrically connected to the display 5. The image processing board processes and amplifies the image signals acquired by the first camera module 113 and the second camera module 113 to obtain a high-definition image and displays the high-definition image on the display 5.

[0045] According to some preferred embodiments of the present invention, the adjustable-view electronic arthroscope of the present invention is disposable and does not require repeated disinfection and reuse, thus avoiding the risk of infection caused by incomplete disinfection of traditional arthroscopes. It also eliminates the need to wait for disinfection and sterilization before each surgery, greatly shortening the surgical preparation time.

[0046] According to some preferred embodiments of the present invention, the camera module 113 of the present invention uses an electronic camera instead of the existing traditional optical lens, which greatly reduces the cost.

[0047] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. An adjustable angle arthroscope comprising a sheath and a scope tip and handle, wherein, The end of the mirror core away from the mirror sheath and the handle is implemented as a mirror core head, a cavity is formed in the mirror core head and penetrates through the two ends of the mirror core head, a rotating component is rotatably arranged in the cavity, and a camera module is arranged in the rotating component; The handle is provided with a rotating operation component for controlling the rotating component to switch between the first position and the second position and any angular position between the first position and the second position; In the first position, the optical axis of the camera module is parallel to the axis of the mirror core; and in the second position, the optical axis of the camera module forms a first included angle with the axis of the mirror core; In the angular range between the first position and the second position, the cavity has an opening, and a light source is further arranged on the wall surface on both sides of the opening of the cavity; The rotating component is implemented as a bracket with a circular arc end at one end and hollow inside, the circular arc end is arranged towards the side of the mirror sheath and the handle and is rotatably connected to the inner wall of the cavity through a first horizontal rotating shaft; The rotating operation component and the rotating component are connected through a control rod, the connection point of the control rod and the rotating component is on the bottom wall of the rotating component and away from the circular arc end; The control rod comprises a rod body parallel to the axis direction of the mirror core and first and second bent rods formed at the two ends of the rod body; the bottom of the rotating component is provided with a downwardly protruding and extending connecting protrusion, a first through hole is formed in the connecting protrusion, and the first bent rod is adapted to be horizontally arranged in the first through hole; The rotating operation component comprises a rotating wheel and a rotating gear, the rotating gear is provided with a second through hole, and the second bent rod is fixed to the second through hole; An axially recessed notch is formed in the axial end surface of the rotating gear, and the two side walls of the notch are arranged at a second included angle; In the first position, the rod body of the control rod is parallel to one side wall of the notch with a gap; and in the second position, the rod body of the control rod is parallel to the other side wall of the notch with a gap.

2. The adjustable angle electronic arthroscope according to claim 1, wherein, An avoiding hole is formed in the handle; The rotating wheel is rotatably connected to the inner wall of the avoiding hole through a second horizontal rotating shaft and partially arranged outside the avoiding hole; The rotating gear is rotatably arranged in the handle through a third horizontal rotating shaft, the rotating gear is engaged with the rotating wheel, and the second through hole is eccentrically arranged relative to the third horizontal rotating shaft.

3. The adjustable angle electronic arthroscope according to claim 2, wherein, The axis of the third horizontal rotating shaft falls on one side wall of the notch and has a distance between the intersection of the two side walls of the notch.

4. The adjustable angle electronic arthroscope according to claim 3, wherein, The second included angle is 90°.

5. The adjustable angle electronic arthroscope according to claim 2, wherein, In the same plane, the connecting line between the axis of the first through hole and the axis of the first horizontal rotating shaft, the axis of the rod body of the control rod and the connecting line between the axis of the second through hole and the axis of the third horizontal rotating shaft form a crank rocker mechanism, and the length of the connecting line between the axis of the first through hole and the axis of the first horizontal rotating shaft is equal to the length of the connecting line between the axis of the second through hole and the axis of the third horizontal rotating shaft.

6. The adjustable angle electronic arthroscope according to claim 1, wherein, The number of light sources on the mirror core head is four, and two light sources are symmetrically arranged on both sides of the first position and the second position.

7. The adjustable angle electronic arthroscope of claim 1, wherein, The mirror sheath is hollow at the opening of the cavity corresponding to the head of the mirror core to form a viewing port; and / or The outer wall of the mirror sheath corresponding to one end of the head of the mirror core is provided with a plurality of water outlet holes distributed in the circumferential direction for filling liquid into the joint cavity.

8. The adjustable angle electronic arthroscope according to claim 1, wherein, The handle has a conversion circuit board inside.

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