A disposable electronic arthroscopy

Abstract

The utility model provides a disposable electronic arthroscope, comprising an arthroscope body, a mirror sheath, a cable, a liquid inlet pipe, a liquid discharge pipe, and a mirror tube. The arthroscope body comprises a shell, a PCB board is arranged inside the shell, a membrane switch electrically connected to the PCB board is arranged on the shell, the mirror sheath is detachably mounted on one end of the shell through a locking mechanism, the other end of the shell is sleeved with a sheath, a wire hole is arranged on the sheath, the cable passes through the wire hole and extends to be electrically connected to the PCB board, pipe holes are symmetrically arranged on the cable sheath, the symmetrical pipe holes are respectively connected to the liquid inlet pipe and the liquid discharge pipe, a control valve is arranged inside the end of the shell connected to the mirror sheath, the liquid inlet pipe and the liquid discharge pipe pass through the pipe hole and extend to the inside of the shell, and are connected to the control valve through right-angle joint two and right-angle joint one, one end of the mirror tube extends into the shell and is fixedly connected to the control valve, and a camera module is arranged at the other end of the mirror tube, so that the arthroscope can be individually filled with liquid or discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment and devices, in particular to a disposable electronic arthroscope. Background Art

[0002] The electronic arthroscope is equipped with an electronic imaging device at the front end. It is a rod-shaped instrument used to observe the internal structure of the joint and is used to diagnose and treat joint diseases. It can enter the human joint through a small incision made during surgery. When in use, the endoscope is introduced into the pre-examination area, and the image of the lesion site can be directly viewed, which can help doctors to more comprehensively examine the situation in the cavity and perform inspection and surgery under visual conditions.

[0003] There are still some problems with current arthroscopy:

[0004] 1. A Chinese patent discloses a special sheath for hip arthroscopy (authorization publication number CN203263357U). In the patent, the joint fluid inlet is far away from the lens, and the lens area cannot be continuously cleaned while the fluid is being inhaled.

[0005] 2. A Chinese patent discloses an electronic arthroscope with a continuous flushing function (authorization publication number CN219183690U). The distance between the liquid inlet and the liquid outlet at the head end of the patent is too close, and both are located in a small area at the head end. There will be interference problems between the inlet and outlet liquid flows. A large part of the clean liquid that has just entered will be discharged out of the liquid outlet without participating in the flushing, which greatly affects the flushing effect, reduces the flushing efficiency, and wastes a large amount of liquid medicine.

[0006] 3. The inner and outer sheaths of traditional hysteroscopes require more space in terms of diameter, which leaves less space for liquid circulation, resulting in the problem of slow liquid inlet speed. This is inconsistent with the increasingly smaller diameter and disposable (low cost) direction of the endoscope industry.

[0007] The purpose of the utility model is to provide a disposable electronic arthroscope to solve the problems mentioned in the above background technology. Utility Model Content

[0008] To achieve the above-mentioned purpose, the utility model provides a disposable electronic arthroscope, comprising an arthroscope body, a mirror sheath, a cable, a liquid inlet pipe, a liquid discharge pipe, and a mirror tube, wherein the arthroscope body comprises a shell, a PCB board, and a membrane switch, wherein the PCB board is fixedly mounted inside the shell, the membrane switch is mounted on the shell and electrically connected to the PCB board, the mirror sheath is detachably mounted on one end of the shell through a locking mechanism, the other end of the shell is sleeved with a sheath, the sheath is provided with a wire hole, the cable passes through the wire hole and extends to the inside of the shell and is electrically connected to the PCB board, the sheath is also symmetrically provided with tube holes, the symmetrical tube holes are respectively connected to the liquid inlet pipe and the liquid discharge pipe, a control valve is provided inside the end of the shell connected to the mirror sheath, the liquid inlet pipe and the liquid discharge pipe extend to the inside of the shell through the tube hole, and are connected to the control valve through right-angle joint two and right-angle joint one, one end of the mirror tube extends into the shell and is fixedly connected to the control valve, and a camera module is provided at the other end of the mirror tube;

[0009] The mirror sheath includes a sheath tube and a tube head, wherein the sheath tube is fixedly connected to the tube head, and the tube head is detachably connected to the shell. The camera module is connected to a module line, and the module line extends from the inside of the mirror tube to the shell and is connected to the PCB board. A liquid cavity is provided in the sheath tube, and the liquid cavity controls liquid inlet and discharge through the control valve.

[0010] As a further improvement of the present invention, the control valve includes a valve body and a valve core. The valve body is fixedly installed inside the shell away from one end of the sheath, one end of the valve core is installed inside the valve body, and the other end of the valve core is connected to a fixed joint 1. The valve core is connected to the right-angle joint 2 and the right-angle joint 1, and the valve core controls the liquid inlet and liquid discharge of the inlet pipe and the discharge pipe. The mirror tube extends into the interior of the shell and passes through the fixed joint 1 and the valve core in turn and is fixedly connected to the interior of the valve body.

[0011] As a further improvement of the present invention, the liquid cavity includes channel one and channel two, channel one is arranged on one side of the valve body, the right-angle joint two is connected to one end of the channel one, the channel two is provided between the mirror tube and the sheath tube, and the other end of the channel one is connected to the channel two.

[0012] As a further improvement of the present invention, one end of the fixed joint one extends into the interior of the valve core and is combined with the valve body to form a cavity, the cavity and the channel one are arranged alternately, the valve core is rotatably installed between the valve body and the fixed joint one, a plurality of liquid channels are arranged on the fixed joint one, a drainage hole is arranged on the same side of the valve body and the valve core close to the cavity, the drainage hole is interconnected with the cavity and the right-angle joint one, the liquid channel is interconnected with the cavity and the channel two, and a plurality of drainage holes are arranged on the sheath tube.

[0013] As a further improvement of the utility model, a lever is fixedly installed on the top of the valve core, and a liquid inlet hole is also provided on the valve core. The liquid inlet hole is arranged close to the liquid discharge hole and is located on the same loop line as the channel 1. An arc-shaped through groove for the movement of the lever is provided on the shell.

[0014] As a further improvement of the present invention, a plurality of small O-rings are provided at the position where the inner center of the valve body contacts the inner wall of the valve core, a large O-ring is provided at the contact surface between the outer wall of the valve core and the inner wall of the valve body, and a plurality of small O-rings are provided on the outer walls of the fixed joint at one end in contact with the valve core and at one end in contact with the pipe head.

[0015] As a further improvement of the present invention, the locking mechanism includes a sliding locking ring and a limiting steel ball, the sliding locking ring is slidably installed on the end of the shell, the limiting steel ball is movably and symmetrically installed on the fixed joint, the pipe head is inserted into the end of the fixed joint, and the limiting steel ball limits and fixes the pipe head.

[0016] As a further improvement of the utility model, a compression spring is sleeved on the outer wall of the end of the shell and the fixed joint one, the sliding locking ring cover is arranged on the outside of the compression spring, one end of the compression spring is fixedly connected to the shell, and the other end is fixedly connected to the inner wall of the sliding locking ring, the sliding locking ring is slidably connected to the shell, and a wire retaining ring is provided on the outer wall of the fixed joint one, and the wire retaining ring limits the sliding locking ring.

[0017] As a further improvement of the utility model, the outer wall of the fixed joint is symmetrically provided with through holes, and the position of the pipe head corresponding to the symmetrical through holes is provided with a limiting groove, the through hole is connected with the limiting groove, the limiting steel ball is movably installed inside the through hole, and the inner wall of the sliding locking ring is provided with a groove matching the limiting steel ball.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model is provided with a detachable mirror sheath, and a valve core provided in the control valve is provided with a channel 1 which is connected with a liquid inlet pipe, and a channel 2 is provided between the mirror tube and the sheath tube, and the channel 1 is communicated with the channel 2. Liquid is input through the liquid inlet pipe and then enters the channel 2 through the channel 1 to be discharged from the end of the sheath tube to realize flushing. When it is necessary to aspirate the flushing liquid, the control valve is rotated to make the drainage hole on the valve core connected with the drainage pipe, and the sheath tube is provided with a plurality of drainage holes, so that the flushed liquid can be aspirated through the channel 2 and then through the cavity to be discharged from the drainage pipe. The original diameters of the mirror tube and the sheath tube can be changed to effectively realize the integration of liquid inlet and liquid discharge, thereby improving the surgical efficiency. At the same time, a certain distance is set between the liquid outlet position and the liquid discharge position, so that the liquid just flushed will not be aspirated because the distance between the two is too close during flushing and drainage.

[0020] 2. The utility model is provided with a control valve, a lever at the top of the valve core, and a liquid inlet hole on the valve core. The liquid inlet hole is connected with the right-angle joint 2 by pushing the lever toward one side of the liquid inlet pipe. At the same time, the discharge hole on the valve core is separated from the right-angle joint 1, and the outer wall of the valve core blocks the right-angle joint 1. At this time, liquid can be fed in without discharge. When the lever is pushed in the opposite direction, the valve core rotates until the discharge hole is connected with the right-angle joint 1. At this time, the outer wall of the valve core blocks the channel, thereby achieving only discharge without feeding. This design can achieve separate liquid feeding and discharge, and is highly practical.

[0021] 3. The utility model is provided with a locking mechanism, by which the sliding locking ring is pushed so that the sliding locking ring squeezes the compression spring, and the groove on the sliding locking ring moves to the position of the limiting steel ball to provide a movable space for the limiting steel ball. At this time, the pipe head can be inserted into the fixed joint. At this time, when the limiting groove on the pipe head reaches the position of the limiting steel ball, the limiting steel ball has movable space toward the pipe head, and then the sliding locking ring is released, and the compression spring rebounds to push the sliding locking ring outward. At this time, the groove of the sliding locking ring is separated from the limiting steel ball and the sliding lock The inner wall of the stop ring pushes the limiting steel ball to move toward the limiting groove until the sliding locking ring and the wire retaining ring are tightly fixed. At this time, the limiting steel ball limits and fixes the tube head, thereby realizing a quick connection between the tube head and the shell. When the tube head needs to be disassembled, just push the sliding locking ring toward the shell so that the groove on the sliding locking ring moves to the position of the limiting steel ball, providing the limiting steel ball with a moving space to release the restriction on the tube head, thereby realizing quick disassembly of the tube head. This design can achieve quick disassembly and assembly between the sheath and the arthroscope body, saving time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of the utility model;

[0023] Figure 2 It is the internal three-dimensional structure diagram of the utility model;

[0024] Figure 3 This is a schematic diagram of the mirror sheath structure of the utility model;

[0025] Figure 4 It is a partial cross-sectional view of the sheath tube of the utility model;

[0026] Figure 5 It is a schematic diagram of the liquid flow direction of the liquid inlet and liquid discharge of the utility model;

[0027] Figure 6 This is a schematic diagram of the valve core structure of the utility model;

[0028] Figure 7 It is a schematic diagram of the connection structure between the pipe head and the fixed joint of the utility model.

[0029] In the figure: 600, arthroscopy body; 001, channel 1; 002, channel 2; 003, drainage hole; 004, liquid inlet hole; 007, liquid channel; 008, cavity; 009, drainage hole; 010, groove; 012, limit groove; 101, drainage pipe; 102, liquid inlet pipe; 103, cable; 104, sheath; 105, housing; 106, PCB board; 107, membrane switch; 108, right angle Connector 1; 109, valve body; 110, valve core; 111, fixed connector 1; 112, sliding locking ring; 113, small O-ring; 114, sheath; 115, mirror tube; 117, tube head; 118, wire retaining ring; 119, limiting steel ball; 120, compression spring; 121, large O-ring; 122, right-angle connector 2; 123, module line; 124, lever; 125, camera module; 500, mirror sheath. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0031] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0033] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0034] Embodiment 1:

[0035] See also Figure 1-7 The utility model provides a disposable electronic arthroscope, including an arthroscope body 600, a mirror sheath 500, a cable 103, a liquid inlet pipe 102, a liquid discharge pipe 101, and a mirror tube 115. The arthroscope body 600 includes a shell 105, a PCB board 106, and a membrane switch 107. The PCB board 106 is fixedly installed inside the shell 105. The membrane switch 107 is installed on the shell 105 and is electrically connected to the PCB board 106. The mirror sheath 500 is detachably installed on one end of the shell 105 through a locking mechanism. The other end of the shell 105 is sleeved with a sheath 104, and the sheath 104 is provided with a wire hole. The cable 103 is provided with a sheath 104, and the sheath 104 is provided with a wire hole. 3 extends through the wire hole to the inside of the housing 105 and is electrically connected to the PCB board 106. The sheath 104 is also symmetrically provided with tube holes, which are symmetrically connected to the liquid inlet pipe 102 and the liquid discharge pipe 101 respectively. A control valve is provided inside the end of the housing 105 connected to the mirror sheath 500. The liquid inlet pipe 102 and the liquid discharge pipe 101 extend through the tube holes to the inside of the housing 105 and are connected to the control valve through the right-angle joint 2 122 and the right-angle joint 1 108. One end of the mirror tube 115 extends into the housing 105 and is fixedly connected to the control valve. The other end of the mirror tube 115 is provided with a camera module 125;

[0036] The mirror sheath 500 includes a sheath tube 114 and a tube head 117. The sheath tube 114 is fixedly connected to the tube head 117. The tube head 117 is detachably connected to the shell 105. The camera module 125 is connected to a module line 123. The module line 123 extends from the inside of the mirror tube 115 to the shell 105 and is connected to the PCB board 106. A liquid cavity is provided in the sheath tube 114. The liquid cavity is controlled by the control valve to control liquid inlet and discharge.

[0037] The control valve includes a valve body 109 and a valve core 110. The valve body 109 is fixedly installed inside the shell 105 away from one end of the sheath 104. One end of the valve core 110 is installed inside the valve body 109. The other end of the valve core 110 is connected to a fixed joint 111. The valve core 110 is connected to the right-angle joint 122 and the right-angle joint 108. The valve core 110 controls the liquid inlet and liquid discharge of the liquid inlet pipe 102 and the liquid discharge pipe 101. The mirror tube 115 extends into the interior of the shell 105 and passes through the fixed joint 111 and the valve core 110 in turn and is fixedly connected to the interior of the valve body 109.

[0038] The liquid passage cavity includes channel one 001 and channel two 002. Channel one 001 is arranged on one side of the valve body 109. The right-angle joint two 122 is connected to one end of the channel one 001. The channel two 002 is provided between the mirror tube 115 and the sheath tube 114. The other end of the channel one 001 is connected to the channel two 002.

[0039] One end of the fixed joint 111 extends into the interior of the valve core 110 and is combined with the valve body 109 to form a cavity 008. The cavity 008 and the channel 1 001 are arranged alternately. The valve core 110 can be rotatably installed between the valve body 109 and the fixed joint 111. The fixed joint 111 is provided with a plurality of liquid channels 007. The valve body 109 and the valve core 110 are provided with a drainage hole 009 on the same side of the cavity 008. The drainage hole 009 is interconnected with the cavity 008 and the right-angle joint 108. The liquid channel 007 is interconnected with the cavity 008 and the channel 2 002. The sheath 114 is provided with a plurality of drainage holes 003.

[0040] When in use, a valve core 110 provided in the control valve is provided with a channel 1 001 on the valve body 109 which is connected to the liquid inlet pipe 102, a channel 2 002 is provided between the mirror tube 115 and the sheath tube 114, channel 1 001 is connected to channel 2 002, liquid is input through the liquid inlet pipe 102 and then enters channel 2 002 through channel 1 001 to be discharged from the end of the sheath tube 114 to achieve flushing. When the flushing liquid needs to be sucked, the control valve is rotated to make the drainage hole on the valve core 110 connected to the drainage pipe 101, a plurality of drainage holes 003 are provided on the sheath tube 114, and an aspirator is connected to the end of the drainage pipe 101, and the flushing liquid is sucked into the drainage pipe 101 through the drainage hole 003 by the aspirator. Channel 2 002 then passes through liquid channel 007 to the inside of cavity 008 and is then transported from drainage hole 009 to drainage pipe 101 for discharge. This design can realize the integration of liquid inlet and liquid discharge, and a separate channel between the two is used for liquid transport and discharge. In this embodiment, membrane switch 107 is used to control camera module 125 to take pictures, so as to observe the condition of the patient's affected part. There is no need to change the original diameters of mirror tube 115 and sheath tube 114, so that the integration of liquid inlet and liquid discharge can be effectively realized, thereby improving surgical efficiency. At the same time, a certain distance is set between the liquid outlet position and the liquid discharge position, so that the liquid just flushed will not be sucked away because the distance between the two is too close during flushing and drainage.

[0041] Embodiment 2:

[0042] Please pay attention to Figure 1 , Figure 2 , Figure 6 A lever 124 is fixedly installed on the top of the valve core 110, and a liquid inlet hole 004 is also provided on the valve core 110. The liquid inlet hole 004 is arranged close to the direction of the liquid discharge hole 009 and is located on the same loop line as the channel 1 001. An arc-shaped through groove for the movement of the lever 124 is provided on the shell 105.

[0043] A plurality of small O-rings 113 are provided at the position where the inner center of the valve body 109 contacts the inner wall of the valve core 110, a large O-ring 121 is provided at the contact surface between the outer wall of the valve core 110 and the inner wall of the valve body 109, and a plurality of small O-rings 113 are provided on the outer wall of the end of the fixed joint 111 that contacts the valve core 110 and the end that contacts the pipe head 117.

[0044] When in use, at the top of the valve core 110, the lever 124 and the valve core 110 are also provided with a liquid inlet hole 004. The lever 124 is pushed toward the side of the liquid inlet pipe 102 to connect the liquid inlet hole 004 with the right-angle joint 122. At the same time, the discharge hole 009 on the valve core 110 is separated from the right-angle joint 108, and the outer wall of the valve core 110 blocks the right-angle joint 108. At this time, liquid can be fed in without discharging. When the lever 124 is pushed in the opposite direction, the valve core 110 rotates to connect the discharge pipe 1012 with the right-angle joint 108. At this time, the outer wall of the valve core 110 blocks the channel 1001, so that liquid can be discharged without feeding. This design can realize separate liquid feeding and discharging, and is highly practical. The large O-ring 121 and the small O-ring 113 provided in this embodiment can increase the sealing performance of the equipment.

[0045] Embodiment three:

[0046] Please pay attention to Figure 1 , Figure 7 The locking mechanism includes a sliding locking ring 112 and a limiting steel ball 119. The sliding locking ring 112 is slidably installed at the end of the shell 105, and the limiting steel ball 119 is movably and symmetrically installed on the fixed joint 111. The pipe head 117 is inserted into the end of the fixed joint 111, and the limiting steel ball 119 limits and fixes the pipe head 117.

[0047] A compression spring 120 is sleeved on the outer wall of the end of the shell 105 and the fixed joint 111, and the sliding locking ring 112 is covered on the outside of the compression spring 120. One end of the compression spring 120 is fixedly connected to the shell 105, and the other end is fixedly connected to the inner wall of the sliding locking ring 112. The sliding locking ring 112 is slidably connected to the shell 105. A wire retaining ring 118 is provided on the outer wall of the fixed joint 111, and the wire retaining ring 118 limits the sliding locking ring 112.

[0048] The outer wall of the fixed joint 111 is symmetrically provided with through holes, and the position of the pipe head 117 corresponding to the symmetrical through holes is provided with a limiting groove 012, the through hole is connected to the limiting groove 012, the limiting steel ball 119 is movably installed inside the through hole, and the inner wall of the sliding locking ring 112 is provided with a groove 010 that cooperates with the limiting steel ball 119.

[0049] When in use, the sliding locking ring 112 is pushed so that the sliding locking ring 112 squeezes the compression spring 120, and the groove 010 on the sliding locking ring 112 moves to the position of the limiting steel ball 119 to provide a movable space for the limiting steel ball 119. At this time, the pipe head 117 can be inserted into the fixed joint 111. At this time, when the limiting groove 012 on the pipe head 117 reaches the position of the limiting steel ball 119, the limiting steel ball 119 has movable space toward the pipe head 117, and then the sliding locking ring 112 is released, and the compression spring 120 rebounds to push the sliding locking ring 112 outward. At this time, the groove 010 of the sliding locking ring 112 is disengaged from the limiting steel ball 119 and the sliding locking ring 112 The inner wall pushes the limiting steel ball 119 to move toward the limiting groove 012 until the sliding locking ring 112 and the wire retaining ring 118 are tightly fixed. At this time, the limiting steel ball 119 limits and fixes the tube head 117, thereby realizing a quick connection between the tube head 117 and the shell 105. When the tube head 117 needs to be disassembled, it is only necessary to push the sliding locking ring 112 toward the shell 105, so that the groove 010 on the sliding locking ring 112 moves to the position of the limiting steel ball 119 to provide a moving space for the limiting steel ball 119 to release the restriction on the tube head 117, thereby realizing the quick disassembly of the tube head 117. Through this design, the quick disassembly and assembly between the sheath 500 and the arthroscope body 600 can be realized, saving time.

[0050] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A disposable electronic arthroscopy, characterized in that: The arthroscope comprises an arthroscope body (600), a sheath (500), a cable (103), a liquid inlet pipe (102), a liquid outlet pipe (101), and a mirror tube (115); the arthroscope body (600) comprises a shell (105), a PCB board (106), and a membrane switch (107); the PCB board (106) is fixedly mounted inside the shell (105); the membrane switch (107) is mounted on the shell (105) and is electrically connected to the PCB board (106); the sheath (500) is detachably mounted on one end of the shell (105) through a locking mechanism; the other end of the shell (105) is sleeved with a sheath (104); the sheath (104) is provided with a wire hole, and the cable (103) passes through the sheath (104). The wire hole extends to the inside of the shell (105) and is electrically connected to the PCB board (106); the sheath (104) is also symmetrically provided with tube holes, the symmetrical tube holes are respectively connected to the liquid inlet pipe (102) and the liquid discharge pipe (101); a control valve is provided inside the end of the shell (105) connected to the mirror sheath (500); the liquid inlet pipe (102) and the liquid discharge pipe (101) extend to the inside of the shell (105) through the tube hole, and are connected to the control valve through the second right-angle joint (122) and the first right-angle joint (108); one end of the mirror tube (115) extends into the shell (105) and is fixedly connected to the control valve; the other end of the mirror tube (115) is provided with a camera module (125); The mirror sheath (500) comprises a sheath tube (114) and a tube head (117); the sheath tube (114) is fixedly connected to the tube head (117); the tube head (117) is detachably connected to the housing (105); the camera module (125) is connected to a module line (123); the module line (123) extends from the inside of the mirror tube (115) to the inside of the housing (105) and is connected to the PCB board (106); a liquid through cavity is provided in the sheath tube (114); the liquid through cavity is controlled to inlet and discharge liquid through the control valve.

2. A disposable electronic arthroscopy according to claim 1, characterized in that: The control valve comprises a valve body (109) and a valve core (110); the valve body (109) is fixedly mounted inside the housing (105) at one end away from the sheath (104); one end of the valve core (110) is mounted inside the valve body (109); the other end of the valve core (110) is connected to a fixed joint (111); the valve core (110) is communicated with the liquid inlet pipe (102) and the liquid discharge pipe (101); the valve core (110) controls the liquid inlet and liquid discharge of the liquid inlet pipe (102) and the liquid discharge pipe (101); the mirror tube (115) extends into the housing (105) and sequentially passes through the fixed joint (111) and the valve core (110) to be fixedly connected to the inside of the valve body (109).

3. A disposable electronic arthroscopy according to claim 2, characterized in that: The liquid passage cavity comprises a channel 1 (001) and a channel 2 (002); the channel 1 (001) is arranged on one side of the valve body (109) and the valve core (110); the right-angle joint 2 (122) is connected to one end of the channel 1 (001); the channel 2 (002) is arranged between the mirror tube (115) and the sheath tube (114); the other end of the channel 1 (001) is connected to the channel 2 (002).

4. A disposable electronic arthroscopy according to claim 3, characterized in that: One end of the fixed joint 1 (111) extends into the interior of the valve core (110) and is combined with the valve body (109) to form a cavity (008); the cavity (008) and the channel 1 (001) are arranged alternately; the valve core (110) is rotatably installed between the valve body (109) and the fixed joint 1 (111); a plurality of liquid channels (007) are arranged on the fixed joint 1 (111); a drainage hole (009) is arranged on the same side of the valve body (109) and the valve core (110) close to the cavity (008); the drainage hole (009) is interconnected with the cavity (008) and the right-angle joint 1 (108); the liquid channel (007) is interconnected with the cavity (008) and the channel 2 (002); and a plurality of drainage holes (003) are arranged on the sheath tube (114).

5. A disposable electronic arthroscopy according to claim 4, characterized in that: A lever (124) is fixedly mounted on the top of the valve core (110), and a liquid inlet hole (004) is also provided on the valve core (110). The liquid inlet hole (004) is arranged close to the direction of the liquid discharge hole (009) and is located on the same loop line as the channel 1 (001). An arc-shaped through groove for the movement of the lever (124) is provided on the housing (105).

6. A disposable electronic arthroscopy according to claim 2, characterized in that: A plurality of small O-rings (113) are provided at the position where the center of the valve body (109) contacts the inner wall of the valve core (110), a large O-ring (121) is provided at the contact surface between the outer wall of the valve core (110) and the inner wall of the valve body (109), and a plurality of small O-rings (113) are provided on the outer wall of the fixed joint (111) at one end in contact with the valve core (110) and at one end in contact with the pipe head (117).

7. A disposable electronic arthroscopy according to claim 2, characterized in that: The locking mechanism comprises a sliding locking ring (112) and a limiting steel ball (119); the sliding locking ring (112) is slidably mounted on the end of the housing (105); the limiting steel ball (119) is movably and symmetrically mounted on the fixed joint (111); the pipe head (117) is inserted into the end of the fixed joint (111); and the limiting steel ball (119) limits and fixes the pipe head (117).

8. A disposable electronic arthroscopy according to claim 7, characterized in that: A compression spring (120) is sleeved on the outer wall of the end of the shell (105) and the fixed joint (111); the sliding locking ring (112) is covered on the outside of the compression spring (120); one end of the compression spring (120) is fixedly connected to the shell (105), and the other end is fixedly connected to the inner wall of the sliding locking ring (112); the sliding locking ring (112) is slidably connected to the shell (105); a wire retaining ring (118) is provided on the outer wall of the fixed joint (111); and the wire retaining ring (118) limits the sliding locking ring (112).

9. A disposable electronic arthroscopy according to claim 8, characterized in that: The outer wall of the fixed joint (111) is symmetrically provided with through holes, and the position on the pipe head (117) corresponding to the symmetrical through holes is provided with a limiting groove (012), the through hole is connected to the limiting groove (012), the limiting steel ball (119) is movably installed inside the through hole, and the inner wall of the sliding locking ring (112) is provided with a groove (010) that cooperates with the limiting steel ball (119).

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