Arthroscope

Abstract

The invention provides an arthroscope. The arthroscope comprises a sleeve, a control part and a lens body tube, the control part is connected with the near end of the sleeve, the far end of the sleeve is provided with an inclined puncture end face, the lens body tube is movably arranged in the sleeve in a penetrating mode, a lens assembly is arranged at the far end of the sleeve, and the lens assembly is electrically connected with the control part; at least one part of the control button is arranged in the sliding groove in a sliding mode, a limiting structure is arranged in the sliding groove, the control button is provided with a plurality of preset control positions arranged at intervals in the sliding direction, and the limiting structure is used for limiting and stopping the control button when the control button reaches the preset control positions; the near end of the endoscope body tube is connected with the control button so as to extend out of or retract into the sleeve along with sliding of the control button. The arthroscope solves the problem that an arthroscope in the prior art is inconvenient to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an arthroscope. BACKGROUND

[0002] As a minimally invasive endoscopic means, the arthroscope has been widely used in the diagnosis and treatment of joints such as shoulders, elbows, hips, knees and ankles. The existing arthroscope generally needs to rely on a scalpel to pre-establish an incision on the skin before use, and then put the arthroscope into the joint through the incision. However, in the process of putting the arthroscope into the joint, the arthroscope itself lacks effective limiting positioning structure, which is easy to cause the mirror body to be inserted too deep into the incision and accidentally touch the internal tissues of the joint or too shallow to effectively observe the joint, resulting in inconvenient operation of the arthroscope in actual use, affecting the use experience of doctors, and easily leading to problems or low efficiency in surgery.

[0003] From the above, it can be seen that the prior art has the problem of inconvenient operation of the arthroscope. SUMMARY

[0004] The main purpose of the present application is to provide an arthroscope to solve the problem of inconvenient operation of the arthroscope in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides an arthroscope, which comprises a sleeve, a control knob and a mirror tube, the control knob is connected with the proximal end of the sleeve, the distal end of the sleeve has an inclined puncture end face, the mirror tube is movably arranged in the sleeve, and the distal end of the mirror tube is provided with a lens assembly, the lens assembly is electrically connected with the control knob; the control knob comprises a control button and a first housing, the first housing is provided with a sliding groove, at least a part of the control button is slidingly arranged in the sliding groove, a limiting structure is arranged in the sliding groove, the control button has a plurality of preset control positions which are arranged at intervals along the sliding direction, and the limiting structure is used for limiting and stopping the control button when the control button reaches each preset control position; the proximal end of the mirror tube is connected with the control button to extend out of or retract into the sleeve following the sliding of the control button.

[0006] Further, the limiting structure comprises an elastic buckle and a first limiting groove, the first limiting groove is arranged in the groove bottom wall of the sliding groove, the elastic buckle is arranged in the first limiting groove, the control button is connected with the elastic buckle in a matched mode, the side wall of the first limiting groove is provided with a plurality of limiting recesses which are arranged at intervals along the sliding direction of the control button, the elastic buckle has a protrusion, the protrusion is clamped in the limiting recess to form a limiting stop, and the plurality of limiting recesses correspond to the plurality of preset control positions one by one.

[0007] Further, the elastic buckle comprises two elastic arms which are arranged at an angle, the proximal ends of the two elastic arms are connected, the distal ends of the two elastic arms are respectively provided with protrusions, the plurality of limiting recesses are a plurality of pairs which are arranged in pairs, each pair of limiting recesses is located on the two side walls of the first limiting groove, and the plurality of pairs of limiting recesses correspond to the plurality of preset control positions one by one.

[0008] Further, the control button comprises a driving shaft, the elastic buckle has a first connecting hole matched with the driving shaft, and the driving shaft is arranged in the first connecting hole and connected with the proximal end of the mirror tube.

[0009] Further, the control button further comprises two first buckling parts arranged in pairs, the two first buckling parts are respectively located on two sides of the driving shaft, the groove bottom wall of the sliding groove is further provided with two second limiting grooves arranged in pairs, the two second limiting grooves are respectively located on two sides of the first limiting groove, the first buckling part is arranged in the second limiting groove, and the end portion is in abutting fit with the first shell.

[0010] Further, the width of the first limiting groove gradually increases along the direction close to the sleeve.

[0011] Further, at least one of the plurality of limiting recesses is located at the distal end of the first limiting groove.

[0012] Further, the first shell is provided with a central through hole and an avoiding groove for avoiding the control button, at least a part of the mirror tube is located in the central through hole, and the avoiding groove is in communication with the first limiting groove and the central through hole respectively.

[0013] Further, the distal end of the first shell is provided with a containing groove, the containing groove contains a sealing ring, and the mirror tube is arranged in the sealing ring.

[0014] Further, the control member is detachably connected with the sleeve.

[0015] Further, the distal end of the first shell is provided with a connecting groove, and the proximal end of the sleeve has a connecting section, the connecting section extends into the connecting groove.

[0016] Further, the connecting section is provided with a guide rib on the peripheral side, and the inner peripheral wall of the connecting groove is correspondingly provided with a guide groove, and the guide rib extends into the guide groove.

[0017] Further, the proximal end of the sleeve is provided with a clamping button, the clamping button has a second buckling part, the inner peripheral wall of the connecting groove is correspondingly provided with a clamping groove, and the second buckling part is clamped and matched with the clamping groove.

[0018] Further, the clamping button comprises an elastic member and a button part, the sleeve comprises a second shell, the peripheral side of the second shell is provided with a containing groove, the clamping button is contained in the containing groove, the two ends of the elastic member are respectively connected with the second shell and the button part, the button part has a second buckling part, the containing groove extends to the connecting section and is in communication with the peripheral side of the connecting section, and the elastic member provides the second buckling part with an acting force for keeping extending out of the peripheral side of the connecting section.

[0019] Further, the control knob further comprises a PCB and a light source, the first shell has a receiving cavity and a central through hole in communication with the receiving cavity, the PCB and the light source are received in the receiving cavity, the light source is arranged corresponding to the central through hole, at least a part of the lens tube is located in the central through hole, the lens assembly comprises a lens and a CMOS sensor, and the CMOS sensor is electrically connected with the PCB.

[0020] Further, the sleeve comprises a sleeve body and a second shell, a proximal end of the sleeve body is connected with a distal end of the second shell, and a distal end of the sleeve body has a puncture end face.

[0021] Further, the sleeve further comprises a control valve, the second shell has a liquid passing channel, the control valve is arranged at an outlet of the liquid passing channel, the control valve comprises a valve core and a valve body, the valve core has a through liquid passing hole, and the valve core is rotatably arranged in the valve body to guide or block the liquid passing channel through the liquid passing hole.

[0022] Further, an outer diameter of the sleeve body is less than 2mm; and / or an inclination angle of the puncture end face is 20-25°; and / or an outer diameter of the lens tube is 0.1-3mm.

[0023] By using the technical scheme, the arthroscope comprises a sleeve, a control knob and a lens tube, the control knob is connected with a proximal end of the sleeve, a distal end of the sleeve has an inclined puncture end face, the lens tube is movably arranged in the sleeve, and a distal end of the lens tube is provided with a lens assembly, the lens assembly is electrically connected with the control knob, the control knob comprises a control button and a first shell, the first shell is provided with a sliding groove, at least a part of the control button is slidably arranged in the sliding groove, a limiting structure is arranged in the sliding groove, the control button has a plurality of preset control positions which are arranged at intervals along a sliding direction, and the limiting structure is used for limiting and stopping the control button when the control button reaches each preset control position, and a proximal end of the lens tube is connected with the control button to extend out of or retract into the sleeve along with the sliding of the control button. Thus, by simultaneously arranging the sleeve with a puncture function and the lens tube, and by moving the lens tube in the sleeve through the control button, the lens assembly can be hidden in the sleeve, the lens assembly can reach the patient's body at the same time when the sleeve is punctured, and then the lens assembly can be extended out of the sleeve for detection through the sliding of the control button, so that the arthroscope can be used through one-time puncture operation without needing to cut an incision and then insert the arthroscope, the operation steps are simplified, and the use is more convenient. Further, by arranging a plurality of preset control positions and limiting the control button at each preset control position through the limiting structure, the lens tube can be effectively limited and positioned after moving a preset distance, so as to avoid being too deep or too shallow, greatly improve the operation convenience, reduce the pain of the patient, improve the success rate and efficiency of the operation, and solve the problem of inconvenient operation of the arthroscope in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0025] Figure 1 A schematic diagram of the arthroscope in a specific embodiment of the present invention is shown;

[0026] Figure 2 A schematic diagram of the sleeve at one angle in a specific embodiment of the present invention is shown;

[0027] Figure 3 A cross-sectional view of the sleeve at one angle is shown in a specific embodiment of the present invention;

[0028] Figure 4 This diagram shows a structural schematic of the sleeve from another angle in a specific embodiment of the present invention;

[0029] Figure 5 A cross-sectional view of the sleeve at one angle is shown in a specific embodiment of the present invention;

[0030] Figure 6 A bottom view of a snap-fit ​​button according to a specific embodiment of the present invention is shown;

[0031] Figure 7 A side view of a snap-fit ​​button according to a specific embodiment of the present invention is shown;

[0032] Figure 8 A top view of the control element in a specific embodiment of the present invention is shown;

[0033] Figure 9 It shows Figure 8 Cross-sectional view at point AA;

[0034] Figure 10 It shows Figure 8 Cross-sectional view at point BB;

[0035] Figure 11 A side view of a control button in a specific embodiment of the present invention is shown;

[0036] Figure 12 A front view of a control button in a specific embodiment of the present invention is shown;

[0037] Figure 13 A top view of the limiting structure in a specific embodiment of the present invention is shown;

[0038] Figure 14 A cross-sectional view of the control element and mirror tube in a specific embodiment of the present invention is shown;

[0039] Figure 15 It shows Figure 14 A magnified view of a section at point C;

[0040] Figure 16 A schematic diagram of the mirror tube in a specific embodiment of the present invention is shown.

[0041] The above figures include the following reference numerals:

[0042] 10. Sleeve; 101. Pipe body; 102. Control valve; 1021. Valve core; 1022. Valve body; 1023. Liquid passage hole; 1024. Liquid passage channel; 103. Second housing; 1031. Guide rib; 1032. Connecting section; 104. Snap-fit ​​button; 1041. Elastic element; 1042. Button part; 1043. Accommodating hole; 1044. Second snap-fit ​​part; 20. Control element; 201. Control button; 2011. Drive shaft; 2012. First snap-fit ​​part; 202. First housing; 2021. 2022. Center through hole; 2023. Guide groove; 2024. Wiring hole; 2025. First limiting groove; 20241. Limiting recess; 2026. Second limiting groove; 2027. Sliding groove; 2028. Receiving cavity; 2029. Connecting groove; 203. Clearance groove; 204. PCB board; 205. Light source; 206. Elastic buckle; 2051. First connecting hole; 206. Sealing ring; 30. Lens tube; 301. Second connecting hole; 302. Lens; 303. CMOS sensor; 304. Through hole. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] It should be noted that the proximal end is the end closer to the arthroscopy user, and the distal end is the end farther away from the arthroscopy user. For example, in Figure 1 In the middle, the upper end of the control element 20 for the user to hold and operate is the proximal end, and the lower end is the distal end.

[0045] To address the inconvenience of arthroscopic operation in existing technologies, this invention provides an arthroscopy system.

[0046] like Figure 1 , Figures 8 to 10 as well asFigures 13 to 14 As shown, the arthroscope includes a cannula 10, a control element 20, and an endoscope tube 30. The control element 20 is connected to the proximal end of the cannula 10, and the distal end of the cannula 10 has an inclined puncture end face. The endoscope tube 30 is movably inserted into the cannula 10, and a lens assembly is provided at its distal end, which is electrically connected to the control element 20. The control element 20 includes a control button 201 and a first housing 202. The first housing 202 has a sliding groove 2026, and at least a portion of the control button 201 is slidably disposed within the sliding groove 2026. A limiting structure is provided within the sliding groove 2026, and the control button 201 has multiple preset control positions spaced apart along the sliding direction. The limiting structure is used to stop the control button 201 when it reaches each preset control position. The proximal end of the endoscope tube 30 is connected to the control button 201 to extend or retract the cannula 10 following the sliding of the control button 201.

[0047] In the technical solution of this application, by simultaneously setting a cannula 10 with puncture function and an endoscope tube 30, and by using a control button 201 to move the endoscope tube 30 within the cannula 10, the lens assembly can be hidden within the cannula 10. When the cannula 10 is punctured, the lens assembly can simultaneously reach the patient's body. After puncture, by sliding the control button 201, the lens assembly can extend out of the cannula 10 for inspection. Thus, there is no need to make an incision before inserting the arthroscope. The arthroscope can be used in a single puncture operation, simplifying the surgical procedure and making it more convenient to use. Furthermore, by setting multiple preset control positions and using a limiting structure to limit the control button 201 at each preset control position, the endoscope tube 30 is effectively limited and positioned after moving a preset distance, avoiding insertion that is too deep or too shallow. This greatly improves the convenience of operation, reduces patient pain, and improves the success rate and efficiency of the surgery.

[0048] like Figures 2 to 5 As shown, the cannula 10 includes a tube body 101 and a second housing 103. The proximal end of the tube body 101 is connected to the distal end of the second housing 103, which can be by welding, threaded connection or integral molding, etc. The distal end of the tube body 101 has a puncture end face.

[0049] In this embodiment, the tilt angle of the puncture end face is 20° to 25°. By reasonably setting the tilt angle range of the puncture end face, the distal end of the tube body 101 can ensure rapid puncture of the skin.

[0050] Furthermore, in this embodiment, the outer diameter of the tube 101 is less than 2 mm. By reasonably setting the outer diameter of the tube 101, making it as small as possible, it is possible to quickly pierce the skin and reduce the incision site, thus facilitating postoperative recovery for the patient.

[0051] like Figure 13 andFigure 15 As shown, the limiting structure includes an elastic buckle 205 and a first limiting groove 2024. The first limiting groove 2024 is formed on the bottom wall of the sliding groove 2026. The elastic buckle 205 is disposed within the first limiting groove 2024. It can be understood that the first limiting groove 2024 extends along the length direction of the sleeve 10. The control button 201 is connected to the elastic buckle 205, thereby moving the elastic buckle 205 along the first limiting groove 2024 while sliding. The side wall of the first limiting groove 2024 is provided with multiple limiting recesses 20241 at intervals along the sliding direction of the control button 201. The elastic buckle 205 has a protrusion, which is engaged with the limiting recess 20241 to form a limiting stop. The multiple limiting recesses 20241 correspond one-to-one with multiple preset control positions. With the above settings, when the control button 201 moves to the preset control position, the protrusion of the elastic buckle 205 is also embedded in the corresponding limiting recess 20241, thereby forming a limiting stop, so that the user cannot continue to slide the control button 201 or needs more force to continue to slide the control button 201, thus playing a good positioning role.

[0052] Specifically, in this embodiment, the elastic buckle 205 includes two elastic arms arranged at an angle, with their proximal ends connected and their distal ends each provided with a protrusion. It can be understood that the elastic buckle 205 in this embodiment is generally V-shaped, with its opening facing the distal end.

[0053] Furthermore, in this embodiment, the multiple limiting recesses 20241 are arranged in pairs, with each pair of limiting recesses 20241 located on both side walls of the first limiting groove 2024. Each pair of limiting recesses 20241 corresponds one-to-one with multiple preset control positions. In other words, the elastic buckle 205 in this embodiment simultaneously engages with both side walls of the first limiting groove 2024, thereby improving the limiting and positioning effect.

[0054] Of course, it is also possible that only one side wall of the first limiting groove 2024 is provided with a limiting recess 20241, and the elastic buckle 205 can also have only one elastic arm that is limited and engaged with one side wall of the first limiting groove 2024, while sliding and engaged with the other side wall of the first limiting groove 2024. In this case, the elastic buckle 205 can be other shapes instead of V-shaped, and can be selected according to actual needs.

[0055] In this embodiment, the elastic buckle 205 is made of high carbon steel spring material, which has high elasticity and thus has a good limiting and positioning effect.

[0056] In this embodiment, the width of the first limiting groove 2024 gradually increases along the direction approaching the sleeve 10. It can be understood that the width direction of the first limiting groove 2024 is... Figure 13The vertical direction in the middle. That is to say, the first limiting groove 2024 in this embodiment is similar to a triangle or trapezoid, so as to match the V-shaped elastic buckle 205. While ensuring the limiting effect when the control button 201 slides to the distal end to make the endoscope tube 30 extend out of the sleeve 10, it also ensures that the control button 201 slides to the proximal end to make the endoscope tube 30 retract into the sleeve 10 without encountering great resistance. This makes it easier to retract the endoscope tube 30 into the sleeve 10 after the surgical examination is completed, further improving the convenience of operation.

[0057] In this embodiment, at least one of the plurality of limiting recesses 20241 is located at the distal end of the first limiting groove 2024. With the above arrangement, when the control button 201 is slid to the farthest preset control position, it can not continue to slide due to the limiting stop of the elastic buckle 205 by the distal wall of the first limiting groove 2024, thus avoiding excessive insertion of the endoscope tube 30 into the patient's body and causing damage.

[0058] Specifically, in this embodiment, the control button 201 has a first preset control position and a second preset control position. Correspondingly, the first limiting groove 2024 has two pairs of limiting recesses 20241. One pair of limiting recesses 20241 is located at the distal end of the first limiting groove 2024. For example... Figure 13 As shown, the control button 201 is located in the first preset control position, i.e., the initial position, at which time the scope tube 30 is hidden inside the sleeve 10. When the control button 201 slides from the first preset control position to the second preset control position, the protrusion of the elastic buckle 205 is embedded in a pair of limiting recesses 20241 on the right side, and the scope tube 30 extends out of the sleeve 10.

[0059] In this embodiment, the control button 201 has reached its extreme distal position when it is slid to the second preset control position. Of course, the control button 201 can also have more preset control positions, such as one or more intermediate positions between the initial position and the extreme distal position, to adjust the extension length of the endoscope tube 30, which can be selected according to actual needs.

[0060] like Figures 9 to 13 , Figure 15 As shown, the control button 201 includes a body and a drive shaft 2011. The body is slidably disposed within the sliding groove 2026, and the drive shaft 2011 is connected and fixed to the body. The elastic buckle 205 has a first connecting hole 2051 adapted to the drive shaft 2011, and the drive shaft 2011 passes through the first connecting hole 2051 and is connected to the proximal end of the scope tube 30. Specifically, as... Figures 15 to 16As shown, the proximal end of the microscope tube 30 has a second connecting hole 301, and the drive shaft 2011 also passes through the second connecting hole 301 to connect with the microscope tube 30. In this embodiment, the sliding groove 2026 is located at the top of the first housing 202, the main body is horizontally arranged, and the drive shaft 2011 is vertically arranged to extend inward into the first housing 202 to connect with the microscope tube 30.

[0061] Furthermore, such as Figures 11 to 13 As shown, the control button 201 also includes two paired first latching portions 2012, which are located on both sides of the drive shaft 2011 and connected to both ends of the main body. The bottom wall of the sliding groove 2026 is also provided with two paired second limiting grooves 2025, which are located on both sides of the first limiting groove 2024. The first latching portion 2012 passes through the second limiting groove 2025, and its end abuts against the first housing 202. Specifically, the end of the first latching portion 2012 has a hook structure, thereby abutting against the inner surface of the first housing 202. In this embodiment, the second limiting groove 2025 also extends along the length direction of the sleeve 10, and the first latching portion 2012 is also a plate-like structure extending along the length direction of the sleeve 10. When the control button 201 is slid to its far limit position, the first latching part 2012 also abuts against the far wall of the second limiting groove 2025. Through the above arrangement, the second limiting groove 2025 can not only guide the control button 201 during the sliding process, but also further improve the limiting effect on the control button 201.

[0062] like Figures 9 to 10 , Figure 13 As shown, the first housing 202 has a central through hole 2021 and a clearance groove 2029 for avoiding the control button 201. The central through hole 2021 extends along the length of the sleeve 10. At least a portion of the mirror tube 30 is located within the central through hole 2021. The clearance groove 2029 communicates with both the first limiting groove 2024 and the central through hole 2021. In this embodiment, the width of the clearance groove 2029 is smaller than the width of the first limiting groove 2024, so that the first limiting groove 2024 has sufficient bottom area to support the elastic buckle 205 and ensure the smooth movement of the elastic buckle 205 within the first limiting groove 2024.

[0063] In this embodiment, the control element 20 is detachably connected to the sleeve 10.

[0064] like Figures 2 to 5 , Figures 9 to 10 As shown, the distal end of the first housing 202 has a connecting groove 2028, and the proximal end of the sleeve 10 has a connecting section 1032, which extends into the connecting groove 2028. Specifically, the connecting section 1032 is located at the proximal end of the second housing 103.

[0065] Furthermore, guide ribs 1031 are provided on the peripheral side of the connecting section 1032, and guide grooves 2022 are correspondingly provided on the inner peripheral wall of the connecting groove 2028, with the guide ribs 1031 extending into the guide grooves 2022. It can be understood that both the guide ribs 1031 and the guide grooves 2022 extend along the length of the sleeve 10. In this embodiment, the guide ribs 1031 and guide grooves 2022 are a pair arranged opposite to each other. Of course, there can also be multiple guide ribs 1031 and guide grooves 2022 spaced apart circumferentially, which can be selected according to actual needs.

[0066] like Figure 2 , Figures 4 to 7 As shown, a snap-fit ​​button 104 is provided at the proximal end of the sleeve 10. Specifically, the snap-fit ​​button 104 is provided on the second housing 103. The snap-fit ​​button 104 has a second snap-fit ​​part 1044, and a corresponding slot is provided on the inner peripheral wall of the connecting groove 2028, and the second snap-fit ​​part 1044 engages with the slot.

[0067] Specifically, such as Figures 5 to 7 As shown, the snap-fit ​​button 104 includes an elastic element 1041 and a button portion 1042. A receiving groove is formed on the peripheral side of the second housing 103, and the snap-fit ​​button 104 is received within the receiving groove. Both ends of the elastic element 1041 are connected to the second housing 103 and the button portion 1042, respectively. The button portion 1042 has a second latching portion 1044. The receiving groove extends to the connecting section 1032 and communicates with the peripheral side of the connecting section 1032. The elastic element 1041 provides a force to the second latching portion 1044 to retain its extension from the peripheral side of the connecting section 1032. In other words, the receiving groove in this embodiment is a U-shaped groove. The button portion 1042 is located at one end of the receiving groove, the extension arm of the second latching portion 1044 is located at the bottom of the receiving groove, and the end hook structure of the second latching portion 1044 is located at the other end of the receiving groove, thereby extending out from the peripheral side of the connecting section 1032 under the action of the elastic element 1041.

[0068] Furthermore, such as Figure 6 As shown, a receiving hole 1043 is provided at the bottom end of the button part 1042. One end of the elastic member 1041 extends into the receiving hole 1043 and is connected and fixed to the button part 1042, thereby improving the connection between the elastic member 1041 and the button part 1042.

[0069] In this embodiment, the elastic element 1041 is a spring.

[0070] In this embodiment, the snap-fit ​​buttons 104 are arranged in pairs, with the two snap-fit ​​buttons 104 positioned on opposite sides of the second housing 103 circumferentially, allowing the user to press them simultaneously. This embodiment achieves positioning through the nested engagement of the connecting section 1032 and the connecting groove 2028. Pressing the buttons 1042 on both sides causes the second snap-fit ​​portion 1044 to abut against or separate from the corresponding slot in the first housing 202, enabling a detachable connection between the control component 20 and the sleeve 10, thus enhancing the flexibility of arthroscopy use.

[0071] In this embodiment, a receiving groove is also provided at the distal end of the first housing 202, and a sealing ring 206 is placed inside the receiving groove, through which the mirror tube 30 passes. Specifically, the receiving groove is located inside the connecting groove 2028 and its cross-sectional area is smaller than that of the connecting groove 2028. Furthermore, the receiving groove is a stepped groove with an inwardly narrowing diameter, and when the connecting section 1032 extends into the connecting groove 2028, its end face also fits tightly with the sealing ring 206. Through the above arrangement, water or liquid can be prevented from entering the interior of the first housing 202 and affecting the electronic components inside the first housing 202.

[0072] like Figures 9 to 10 As shown, the control unit 20 also includes a PCB board 203 and a light source 204. The first housing 202 has a receiving cavity 2027, with a central through hole 2021 communicating with the receiving cavity 2027. The PCB board 203 and the light source 204 are housed within the receiving cavity 2027. The light source 204 is correspondingly positioned with respect to the central through hole 2021. The lens assembly includes a lens 302 and a CMOS sensor 303, which is electrically connected to the PCB board 203. The light source 204 emits light, and the CMOS sensor 303 converts the light signal reflected by the lens 302 into a digital signal, which is then transmitted to the PCB board 203 via a cable for signal processing. Further, as... Figure 16 As shown, the mirror tube 30 has a through hole 304 for cables to pass through.

[0073] In this embodiment, the outer diameter of the endoscope tube 30 is between 0.1 mm and 3 mm. By reasonably setting the range of the outer diameter of the endoscope tube 30, the outer diameter of the endoscope tube 30 is made as small as possible, thereby facilitating insertion into the patient's joint for examination.

[0074] In this embodiment, as Figures 9 to 10 As shown, a wiring hole 2023 is also provided at the near end of the first housing 202. The wiring hole 2023 communicates with the accommodating cavity 2027, and the external wiring passes through the wiring hole 2023 and extends into the accommodating cavity 2027, thereby electrically connecting with components such as the PCB board 203 and the light source 204 inside the accommodating cavity 2027.

[0075] In this embodiment, as Figures 2 to 5As shown, the sleeve 10 also includes a control valve 102. The second housing 103 has a liquid passage 1024, and the control valve 102 is disposed at the outlet of the liquid passage 1024. The control valve 102 includes a valve core 1021 and a valve body 1022. The valve core 1021 has a through liquid passage 1023. The valve core 1021 is rotatably disposed within the valve body 1022 to open or close the liquid passage 1024 through the liquid passage 1023. Specifically, when the liquid passage 1023 faces the liquid passage 1024, the liquid passage 1024 coincides with the liquid passage 1023, and the liquid passage 1024 can flow through the control valve 102 through the liquid passage 1023, thus opening the liquid passage 1024. When the valve core 1021 rotates 90°, the fluid passage 1023 and the fluid channel 1024 are no longer connected, and the valve core 1021 blocks the fluid channel 1024. By setting the control valve 102, the arthroscope in this embodiment can effectively control the fluid aspiration process, which is convenient and quick.

[0076] In this embodiment, the control valves 102 are arranged in pairs, with the two control valves 102 located on opposite sides of the second housing 103. Of course, there can be more control valves 102, which can be selected according to actual needs.

[0077] As can be seen from the above description, the above embodiments of the present invention achieve the following technical effects: by simultaneously setting a cannula 10 with puncture function and an endoscope tube 30, and by using the control button 201 to move the endoscope tube 30 within the cannula 10, the lens assembly can be hidden within the cannula 10. When the cannula 10 is punctured, the lens assembly can simultaneously reach the patient's body. After puncture, by sliding the control button 201, the lens assembly can extend out of the cannula 10 for detection. Thus, there is no need to make an incision before inserting the arthroscope. The arthroscope can be used in a single puncture operation, simplifying the surgical procedure and making it more convenient to use. Furthermore, by setting multiple preset control positions and limiting the control button 201 of each preset control position through a limiting structure, the endoscope tube 30 is effectively limited and positioned after moving a preset distance, avoiding insertion that is too deep or too shallow, greatly improving the convenience of operation, reducing patient pain, and improving the success rate and efficiency of surgery.

[0078] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0079] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0080] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0081] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0082] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0083] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0084] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0085] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An arthroscopy, characterized in that, It includes a cannula (10), a control element (20) and a scope tube (30). The control element (20) is connected to the proximal end of the cannula (10). The distal end of the cannula (10) has an inclined puncture end face. The scope tube (30) is movably inserted into the cannula (10) and has a lens assembly at its distal end. The lens assembly is electrically connected to the control element (20). The control component (20) includes a control button (201) and a first housing (202). The first housing (202) has a sliding groove (2026). At least a portion of the control button (201) is slidably disposed in the sliding groove (2026). A limiting structure is provided in the sliding groove (2026). The control button (201) has a plurality of preset control positions spaced apart along the sliding direction. The limiting structure is used to limit and stop the control button (201) when it reaches each of the preset control positions. The proximal end of the endoscope tube (30) is connected to the control button (201) to extend or retract the sleeve (10) following the sliding of the control button (201).

2. The arthroscope according to claim 1, characterized in that, The limiting structure includes an elastic buckle (205) and a first limiting groove (2024). The first limiting groove (2024) is formed on the bottom wall of the sliding groove (2026). The elastic buckle (205) is disposed in the first limiting groove (2024). The control button (201) is connected to the elastic buckle (205). The side wall of the first limiting groove (2024) is provided with a plurality of limiting recesses (20241) at intervals along the sliding direction of the control button (201). The elastic buckle (205) has a protrusion. The protrusion is embedded in the limiting recess (20241) to form a limiting stop. The plurality of limiting recesses (20241) correspond one-to-one with the plurality of preset control positions.

3. The arthroscope according to claim 2, characterized in that, The elastic buckle (205) includes two elastic arms arranged at an angle, the proximal ends of the two elastic arms are connected, and the distal ends are respectively provided with the protrusions. The plurality of limiting recesses (20241) are arranged in pairs, and each pair of limiting recesses (20241) is located on both side walls of the first limiting groove (2024). The plurality of limiting recesses (20241) correspond one-to-one with the plurality of preset control positions.

4. The arthroscope according to claim 2, characterized in that, The control button (201) includes a drive shaft (2011), and the elastic buckle (205) has a first connection hole (2051) adapted to the drive shaft (2011). The drive shaft (2011) passes through the first connection hole (2051) and is connected to the proximal end of the endpiece tube (30).

5. The arthroscope according to claim 4, characterized in that, The control button (201) also includes two first latching parts (2012) arranged in pairs. The two first latching parts (2012) are respectively located on both sides of the drive shaft (2011). The bottom wall of the sliding groove (2026) is also provided with two second limiting grooves (2025) arranged in pairs. The two second limiting grooves (2025) are respectively located on both sides of the first limiting groove (2024). The first latching part (2012) passes through the second limiting groove (2025) and its end abuts against the first housing (202).

6. The arthroscope according to claim 2, characterized in that, The width of the first limiting groove (2024) gradually increases along the direction close to the sleeve (10).

7. The arthroscope according to claim 2, characterized in that, At least one of the plurality of limiting recesses (20241) is located at the distal end of the first limiting groove (2024).

8. The arthroscope according to claim 2, characterized in that, The first housing (202) has a central through hole (2021) and a clearance groove (2029) for avoiding the control button (201). At least a portion of the mirror tube (30) is located in the central through hole (2021). The clearance groove (2029) is connected to the first limiting groove (2024) and the central through hole (2021) respectively.

9. The arthroscope according to claim 1, characterized in that, The first housing (202) has a receiving groove at its far end, and a sealing ring (206) is placed in the receiving groove. The mirror tube (30) passes through the sealing ring (206).

10. The arthroscope according to claim 1, characterized in that, The control element (20) is detachably connected to the sleeve (10).

11. The arthroscope according to claim 10, characterized in that, The first housing (202) has a connecting groove (2028) at its far end, and the sleeve (10) has a connecting section (1032) at its near end, which extends into the connecting groove (2028).

12. The arthroscope according to claim 11, characterized in that, The connecting section (1032) has a guide rib (1031) on its peripheral side, and the connecting groove (2028) has a corresponding guide groove (2022) on its inner peripheral wall, with the guide rib (1031) extending into the guide groove (2022).

13. The arthroscope according to claim 11, characterized in that, The sleeve (10) is provided with a snap-fit ​​button (104) at its proximal end. The snap-fit ​​button (104) has a second snap-fit ​​part (1044). The inner peripheral wall of the connecting groove (2028) is provided with a corresponding slot. The second snap-fit ​​part (1044) engages with the slot.

14. The arthroscope according to claim 13, characterized in that, The snap-fit ​​button (104) includes an elastic element (1041) and a button portion (1042). The sleeve (10) includes a second housing (103). The peripheral side of the second housing (103) is provided with a receiving groove. The snap-fit ​​button (104) is accommodated in the receiving groove. The two ends of the elastic element (1041) are respectively connected to the second housing (103) and the button portion (1042). The button portion (1042) has a second latching portion (1044). The receiving groove extends to the connecting section (1032) and communicates with the peripheral side of the connecting section (1032). The elastic element (1041) provides a force for the second latching portion (1044) to retain the peripheral side of the connecting section (1032).

15. The arthroscope according to claim 1, characterized in that, The control unit (20) further includes a PCB board (203) and a light source (204). The first housing (202) has a receiving cavity (2027) and a communicating central through hole (2021). The PCB board (203) and the light source (204) are housed in the receiving cavity (2027). The light source (204) is correspondingly arranged with the central through hole (2021). At least a portion of the lens tube (30) is located in the central through hole (2021). The lens assembly includes a lens (302) and a CMOS sensor (303). The CMOS sensor (303) is electrically connected to the PCB board (203).

16. The arthroscope according to any one of claims 1 to 15, characterized in that, The cannula (10) includes a tube body (101) and a second housing (103), the proximal end of the tube body (101) is connected to the distal end of the second housing (103), and the distal end of the tube body (101) has the puncture end face.

17. The arthroscope according to claim 16, characterized in that, The sleeve (10) further includes a control valve (102). The second housing (103) has a liquid passage (1024). The control valve (102) is disposed at the outlet of the liquid passage (1024). The control valve (102) includes a valve core (1021) and a valve body (1022). The valve core (1021) has a through liquid passage hole (1023). The valve core (1021) is rotatably disposed in the valve body (1022) to open or block the liquid passage (1024) through the liquid passage hole (1023).

18. The arthroscope according to claim 16, characterized in that, The outer diameter of the tube (101) is less than 2 mm; and / or The inclination angle of the puncture end face is 20° to 25°; and / or The outer diameter of the mirror tube (30) is 0.1 mm to 3 mm.

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