Arthroscope waste liquid suction device with rapid self-cleaning function
By using a servo motor-driven differential rotating filter drum, separation drum, and pulverizing and pushing mechanism, the clogging and cleaning problems of arthroscopic waste fluid suction devices are solved, achieving rapid self-cleaning and solid-liquid separation, and reducing the risk of cross-infection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- THE SECOND AFFILIATED HOSPITAL OF INNER MONGOLIA MEDICAL UNIV (INNER MONGOLIA ORTHOPEDIC RES INST)
- Filing Date
- 2026-04-02
- Publication Date
- 2026-05-05
AI Technical Summary
Existing arthroscopic waste fluid aspiration devices are prone to clogging when handling large particles, and the tubing is difficult to clean thoroughly after surgery, increasing the risk of cross-infection.
The filter drum and the separation drum are driven by a servo motor and rotate at different speeds. Combined with the crushing and pushing mechanism and the cleaning mechanism, the solid-liquid separation and pipeline self-cleaning are achieved by using centrifugal force and mechanical cutting and cleaning.
It effectively prevents filter drum clogging, ensures unobstructed pipelines, reduces manual cleaning time, lowers the risk of cross-infection, and supports pathological analysis and rapid cleaning.
Smart Images
Figure CN121971018A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, specifically to an arthroscopic waste fluid suction device with rapid self-cleaning function. Background Technology
[0002] During arthroscopic surgery, waste fluid aspiration devices are typically used to clean the surgical area of irrigation fluid, blood, and excised tissue debris or gouty tophi. Traditional waste fluid aspiration devices mostly use direct negative pressure suction to collect waste fluid into a reservoir. When handling waste fluid containing large bone fragments or hard stones, these large particles can easily become stuck in the aspiration syringe or connecting tubing, causing blockages, which can reduce aspiration efficiency or even interrupt the surgical procedure.
[0003] To alleviate clogging issues, some existing suction devices incorporate filters at the collection end. However, as suction continues, large particles of debris in the waste fluid quickly accumulate on the surface of the filter, clogging the pores and preventing proper negative pressure transmission. This not only necessitates frequent shutdowns by medical staff to clean the filter, but also means that the intercepted solid debris often mixes with the waste fluid, making it difficult to separate the debris for postoperative pathological analysis.
[0004] Furthermore, after surgery, the slender tubing and syringe of the waste fluid aspiration device accumulate a large amount of blood, fat, and tissue debris. Existing devices typically lack in-situ cleaning capabilities, requiring medical staff to disassemble the tubing one by one for manual scrubbing and rinsing. This cleaning method is time-consuming and labor-intensive, and the hard-to-reach areas inside the tubing are difficult to clean thoroughly, leaving residues and breeding bacteria, increasing the risk of cross-infection in subsequent uses. Summary of the Invention
[0005] To address the shortcomings of existing technologies, this invention provides an arthroscopic waste fluid aspiration device with rapid self-cleaning function, which solves the problems of existing waste fluid aspiration devices causing blockage of tubes and filters when aspirating large particles of debris, and the difficulty in cleaning the tubes in situ after surgery, which can easily lead to cross-infection due to residual dirt.
[0006] To achieve the above objectives, the present invention provides the following technical solution: an arthroscopic waste fluid suction device with rapid self-cleaning function, comprising a negative pressure device, storage tanks fixedly connected to both sides of the negative pressure device, a tank cover installed on the top of the storage tank, a feed inlet on the tank cover, a filtration and separation mechanism on the outside of the tank cover, the filtration and separation mechanism comprising a servo motor fixedly connected to the top of the tank cover, and a filtration drum and a separation drum rotatably connected to the tank cover respectively, a placement hook fixedly connected to the outside of the negative pressure device, a crushing and pushing mechanism on the outside of the placement hook, a cleaning mechanism on the outside of the negative pressure device, and an emptying valve on the outside of the storage tank.
[0007] Preferably, the filter drum is rotatably connected to the outside of the can lid, the separation drum is rotatably connected to the bottom of the can lid, the output end of the servo motor is fixedly connected to a rotating shaft, the other end of the rotating shaft is fixedly connected to the inside of the filter drum, and a linkage gear is fixedly connected to the outside of the rotating shaft.
[0008] Preferably, the crushing and pushing mechanism includes an outer block, which is disposed inside the placement hook and engages with the placement hook. An L-shaped syringe is fixedly connected to the inner side of the outer block, and a drive motor is fixedly connected to the outer side of the outer block. A drive sleeve is fixedly connected to the output end of the drive motor. A sliding rod is slidably connected to the inner side of the drive sleeve, and a serrated threaded plate is fixedly connected to the outer side of the sliding rod. The serrated threaded plate is disposed inside the L-shaped syringe.
[0009] Preferably, the cleaning mechanism includes a cleaning bottle installed outside the negative pressure device, the cleaning bottle being positioned directly below the placement hook, the end of the L-shaped syringe away from the external block being connected to a suction tube, the other end of the suction tube being connected to the negative pressure device, the outside of the negative pressure device being connected to a guide tube, the other end of the guide tube being connected to a three-way valve, and the three-way valve being connected to the feed inlet of the can lid.
[0010] Preferably, the emptying valve is located on the outer side of the bottom of the storage tank, and the emptying valve is connected to the inside of the storage tank. The outer side of the negative pressure device is connected to a liquid suction plate.
[0011] Preferably, the bottom end of the can lid is rotatably connected to a central rotating gear, the outer side of which meshes with the linkage gear, and the inner side of the separating rotating cylinder is fixedly connected to a drive sleeve rod sleeved on the outer side of the rotating shaft. The outer side of the drive sleeve rod is fixedly connected to a reduction gear, which meshes with the central rotating gear.
[0012] Preferably, a collection sleeve is detachably installed at the bottom of the tank cover, the collection sleeve is sleeved on the outside of the filter drum, the separation drum is attached to the inside of the filter drum, a spiral pusher plate is fixedly connected to the outside of the separation drum, and a discharge port is opened at the top of the filter drum.
[0013] Preferably, a return spring is fixedly connected to the inner side of the drive sleeve, and the other end of the return spring is fixedly connected to the sliding rod. An inclined block is fixedly connected to the inner side of the L-shaped syringe, and a limiting block that abuts against the inclined block is fixedly connected to the outer side of the sliding rod.
[0014] Preferably, the central axis of the sliding rod coincides with the central axis of the driving sleeve, multiple limiting blocks are provided, and the multiple limiting blocks are distributed in a ring array on the outside of the sliding rod. The number of inclined blocks is adapted to the number of limiting blocks, and the outer side of the sawtooth thread plate has a sawtooth structure.
[0015] Preferably, the straw is a flexible connecting tube, and the two ends of the guide tube are fixedly connected to the negative pressure device and the three-way valve, respectively. When the external block is engaged with the placement hook, the L-shaped syringe extends into the interior of the cleaning bottle.
[0016] This invention provides an arthroscopic waste fluid aspiration device with rapid self-cleaning function. It has the following beneficial effects: 1. This invention utilizes a servo motor in conjunction with a linkage gear, a central gear, and a reduction gear to create differential rotation between the filter drum and the separation drum. While centrifugal force ejects waste liquid, a spiral pusher on the outer side of the separation drum continuously pushes solid debris from the inner wall edge towards the top discharge port. This structure effectively avoids filter pore blockage caused by debris accumulation on the inner wall of the filter drum and concentrates large solid residue into a collection sleeve for easy removal, cleaning, or pathological testing.
[0017] 2. In the crushing and pushing mechanism of this invention, a limiting block on the sliding rod abuts against an inclined block inside the L-shaped syringe. Combined with the elastic force of a return spring, this allows the sliding rod with a serrated threaded plate to move axially back and forth while rotating. This structure provides continuous mechanical cutting and reciprocating pressure when aspirating stones or larger debris from inside the joint, improving the crushing and pushing ability of solid materials and preventing debris from getting stuck inside the L-shaped syringe.
[0018] 3. This invention utilizes the cooperation of a cleaning mechanism and a crushing and pushing mechanism, employing a placement hook to fix the external block, allowing the L-shaped syringe to be immersed in the cleaning bottle. Under the suction of the negative pressure device, the cleaning fluid flows through the L-shaped syringe, pipette, and guide tube, and is discharged into the storage tank through a three-way valve. Simultaneously, the reciprocating movement of the serrated threaded plate inside the L-shaped syringe scrubs the tube wall, achieving rapid in-situ cleaning of the entire suction pipeline and avoiding the risk of infection caused by residual waste fluid. Attached Figure Description
[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a front view of the present invention; Figure 3 A cross-sectional view of the storage tank of the present invention is provided to highlight its features. Figure 4 A schematic diagram illustrating the structure of the collecting sleeve of the present invention; Figure 5A cross-sectional view of the filter drum of the present invention is provided to highlight the invention. Figure 6 A cross-sectional view of the separating rotating drum of the present invention is provided to highlight the invention. Figure 7 A cross-sectional view of the L-shaped syringe of the present invention is provided to highlight the invention. Figure 8 for Figure 7 A magnified view of point A; Figure 9 A cross-sectional view to highlight the drive sleeve of the present invention.
[0020] The components include: 1. Negative pressure device; 2. Filtration and separation mechanism; 21. Filtration drum; 22. Separation drum; 23. Servo motor; 24. Rotating shaft; 25. Linkage gear; 26. Intermediate gear; 27. Reduction gear; 28. Drive sleeve; 29. Collection sleeve; 3. Crushing and pushing mechanism; 31. External block; 32. L-shaped syringe; 33. Drive motor; 34. Drive sleeve; 35. Return spring; 36. Sliding rod; 37. Serrated thread plate; 38. Limiting block; 39. Inclined block; 4. Cleaning mechanism; 41. Cleaning bottle; 42. Straw; 43. Guide tube; 44. Three-way valve; 45. Emptying valve port; 5. Storage tank; 6. Tank lid; 7. Placement hook; 8. Liquid suction tray. Detailed Implementation
[0021] The technical solutions in 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] Please see the appendix Figure 1 - Appendix Figure 6 This invention provides an arthroscopic waste fluid suction device with rapid self-cleaning function, including a negative pressure device 1, storage tanks 5 fixedly connected to both sides of the negative pressure device 1, a tank cover 6 installed on the top of the storage tank 5, a feed inlet on the tank cover 6, a filtration and separation mechanism 2 provided on the outside of the tank cover 6, the filtration and separation mechanism 2 including a servo motor 23 fixedly connected to the top of the tank cover 6, and a filtration drum 21 and a separation drum 22 respectively rotatably connected to the tank cover 6, a placement hook 7 fixedly connected to the outside of the negative pressure device 1, a crushing and pushing mechanism 3 provided on the outside of the placement hook 7, a cleaning mechanism 4 provided on the outside of the negative pressure device 1, and an emptying valve port 45 provided on the outside of the storage tank 5; The filter drum 21 is rotatably connected to the outside of the can cover 6, the separation drum 22 is rotatably connected to the bottom of the can cover 6, the output end of the servo motor 23 is fixedly connected to the rotating shaft 24, the other end of the rotating shaft 24 is fixedly connected to the inside of the filter drum 21, and the outer side of the rotating shaft 24 is fixedly connected to the linkage gear 25. A central rotating gear 26 is rotatably connected to the bottom end of the can lid 6. The outer side of the central rotating gear 26 meshes with the linkage gear 25. A drive sleeve 28 sleeved on the outer side of the rotating shaft 24 is fixedly connected to the inner side of the separating rotating cylinder 22. A reduction gear 27 is fixedly connected to the outer side of the drive sleeve 28. The reduction gear 27 meshes with the central rotating gear 26. A collection sleeve 29 is detachably installed at the bottom end of the can lid 6. The collection sleeve 29 is sleeved on the outer side of the filtering rotating cylinder 21. The separating rotating cylinder 22 is attached to the inner side of the filtering rotating cylinder 21. A spiral push plate is fixedly connected to the outer side of the separating rotating cylinder 22. A discharge port is opened at the top of the filtering rotating cylinder 21. Specifically, when the negative pressure device 1 transfers the waste liquid to the inlet above the tank cover 6 through the cleaning mechanism 4, it falls into the filter drum 21. At this time, the servo motor 23 drives the rotating shaft 24 to rotate at high speed, which in turn drives the filter drum 21 connected to it to rotate at high speed. This causes the waste liquid to be centrifugally spun within the filter drum 21, allowing it to be filtered out and directly enter the storage tank 5. Meanwhile, large sludge in the waste liquid moves to the edge of the filter drum 21 under the action of centrifugal force. At the same time, the rotation of the rotating shaft 24 drives the linkage gear 25 to rotate, which in turn drives the reduction gear 27 above the drive sleeve 28 to rotate through the intermediate rotation gear 26. Through the reduction gear 27, the speed of the drive sleeve 28 is lower than the speed of the rotating shaft 24, thus making the rotation speed of the separation drum 22 lower than the speed of the filter drum 21, thereby allowing the sludge at the edge of the filter drum 21 to be filtered out. Large slag particles are pushed upwards by the spiral pusher plate on the outside of the separating drum 22, preventing the slag particles from accumulating and clogging the filtering drum 21. At the same time, the slag particles are separated from the waste liquid, preventing the slag particles from containing a large amount of waste liquid. During the process of being pushed upwards, the slag particles are discharged through the discharge port at the top of the filtering drum 21 and fall into the collection sleeve 29 installed on the outside of the filtering drum 21. The collection sleeve 29 is installed on the outside of the tank cover 6. When cleaning is required, the collection sleeve 29 can be disassembled for cleaning or subsequent pathological analysis. During this process, the waste liquid actually passes through the filter holes opened on the side wall of the filtering drum 21 and falls into the storage tank 5. When the spiral pusher plate on the outside of the separating drum 22 rotates at a differential speed, its edge maintains a relatively sliding contact with the inner wall of the filtering drum 21, thereby scraping off the solid slag particles attached to the inner wall and steadily pushing them to the discharge port along the spiral guide.
[0023] See appendix Figure 7 - Appendix Figure 9The crushing and pushing mechanism 3 includes an outer block 31, which is disposed inside the placement hook 7 and engages with the placement hook 7. An L-shaped syringe 32 is fixedly connected to the inner side of the outer block 31, and a drive motor 33 is fixedly connected to the outer side of the outer block 31. A drive sleeve 34 is fixedly connected to the output end of the drive motor 33. A sliding rod 36 is slidably connected to the inner side of the drive sleeve 34, and a serrated thread plate 37 is fixedly connected to the outer side of the sliding rod 36. The serrated thread plate 37 is disposed inside the L-shaped syringe 32. A return spring 35 is fixedly connected to the inner side of the drive sleeve 34, and the other end of the return spring 35 is fixedly connected to the sliding rod 36. An inclined block 39 is fixedly connected to the inner side of the L-shaped syringe 32, and a limiting block 38 that abuts against the inclined block 39 is fixedly connected to the outer side of the sliding rod 36. The central axis of the sliding rod 36 coincides with the central axis of the drive sleeve 34. Multiple limiting blocks 38 are provided, and multiple limiting blocks 38 are arranged in a ring array on the outer side of the sliding rod 36. The number of inclined blocks 39 is matched with the number of limiting blocks 38. The outer side of the sawtooth thread plate 37 has a sawtooth structure. Specifically, during arthroscopic surgeries, an L-shaped syringe 32 is inserted into the patient's affected area for aspiration. When treating gout stones, the drive motor 33 is activated, causing the drive sleeve 34 to rotate. This, in turn, rotates the sliding rod 36 and the serrated threaded plate 37, aspirating and pushing out waste fluid and debris. During rotation, the limiting block 38 above the sliding rod 36 abuts against the tilting block 39, causing the sliding rod 36 to move inwards towards the L-shaped syringe 32. When the limiting block 38 disengages from the tilting block 39, the return spring 35 pushes the sliding rod 36 back to its initial position. The reciprocating movement continues until the limiting block 38 and the tilting block 39 abut against each other again. The outer side of the serrated thread plate 37 is serrated, which has a good cutting effect when treating stones, thus facilitating the quick cleaning of stones. In order to ensure that the drive sleeve 34 can drive the sliding rod 36 to rotate synchronously and allow it to slide axially when rotating, the sliding rod 36 and the inner wall of the drive sleeve 34 adopt a circumferentially limited and axially sliding guide fit structure. At the same time, a suction gap is left between the outer wall of the serrated thread plate 37 and the inner wall of the L-shaped syringe 32 to allow the waste liquid to flow smoothly, ensuring that the negative pressure suction action and the mechanical cutting and crushing process do not interfere with each other.
[0024] See appendix Figure 1 - Appendix Figure 2The cleaning mechanism 4 includes a cleaning bottle 41 installed outside the negative pressure device 1. The cleaning bottle 41 is positioned directly below the placement hook 7. One end of the L-shaped syringe 32 away from the outer block 31 is connected to a suction tube 42. The other end of the suction tube 42 is connected to the negative pressure device 1. A guide tube 43 is connected to the outside of the negative pressure device 1. The other end of the guide tube 43 is connected to a three-way valve 44. The three-way valve 44 is connected to the feed inlet of the tank cover 6. The emptying valve port 45 is located on the outside of the bottom of the storage tank 5. The emptying valve port 45 is connected to the inside of the storage tank 5. A suction plate 8 is connected to the outside of the negative pressure device 1. The straw 42 is a flexible connecting tube, and the two ends of the guide tube 43 are fixedly connected to the negative pressure device 1 and the three-way valve 44 respectively. When the external block 31 is engaged with the placement hook 7, the L-shaped syringe 32 extends into the interior of the cleaning bottle 41. Specifically, when the device is in use, the external block 31 and the L-shaped syringe 32 are placed above the placement hook 7 and locked in place. Since the cleaning bottle 41 contains a large amount of cleaning liquid and is installed directly below the placement hook 7, the L-shaped syringe 32 can be immersed in the cleaning liquid in the cleaning bottle 41. By starting the drive motor 33, the serrated thread plate 37 can be moved back and forth and rotated in the L-shaped syringe 32 to clean the residual debris. At the same time, the cleaning liquid can also be drawn in by the negative pressure device 1, so that the cleaning liquid is drawn from the L-shaped syringe 32 and enters the negative pressure device 1 through the suction tube 42, and is discharged into the three-way valve 44 through the guide tube 43. By controlling the three-way valve 44, waste liquid or cleaning liquid can be allowed to enter. The waste fluid or cleaning fluid is stored in different storage tanks 5, allowing for cleaning of the entire device during or after surgery to prevent infection. After surgery, the device can be moved to the waste fluid collection area, and the waste fluid or cleaning fluid in the storage tank 5 can be discharged by opening the empty drain valve 45. The suction tray 8 is used to aspirate and clean up waste fluid that appears above the ground during arthroscopic surgery to prevent slipping or electric shock. In terms of flow path guidance, the two output ends of the three-way valve 44 are independently connected to the corresponding storage tanks 5 on both sides. By manually or automatically switching the internal flow direction of the three-way valve 44, the tissue waste fluid generated during surgery and the cleaning waste fluid generated by the postoperative flushing pipeline can be accurately diverted to different storage tanks 5 for isolated storage.
[0025] Working principle: When using this device, the pulverizing and pushing mechanism 3 first sucks up the waste liquid and debris from the patient's lesion. When the sucked waste liquid is transferred to the inlet above the tank cover 6 through the pipeline, the filtration and separation mechanism 2 starts to operate. When the negative pressure device 1 sucks the waste liquid into the inlet and it falls into the filter drum 21, the servo motor 23 drives the rotating shaft 24 and the filter drum 21 to rotate at high speed. Centrifugal force is used to throw the waste liquid out of the filter drum 21 and into the storage tank 5. At the same time, the linkage gear 25 on the rotating shaft 24 drives the reduction gear 2 through the intermediate rotation gear 26. 7 and drive sleeve 28 rotate, causing the separating drum 22 to rotate in the same direction at a speed lower than that of the filtering drum 21. Due to the speed difference, the spiral pusher plate on the outside of the separating drum 22 will continuously push the large particles of debris attached to the inner wall of the filtering drum 21 to the top, and finally discharge them from the discharge port and fall into the collection sleeve 29 on the outside of the tank cover 6. The advantage of this design is that it can clean the solid slag on the inner wall of the filtering drum 21 in time, prevent the filter holes from being blocked by impurities, and achieve effective solid-liquid separation. It is also convenient to directly remove the collection sleeve 29 to process the slag or conduct pathological analysis. Furthermore, before the waste liquid enters the filtration and separation mechanism 2 for separation, the crushing and pushing mechanism 3 is used to crush and aspirate the stones or tissue debris at the patient's lesion site. The L-shaped syringe 32 is inserted into the lesion site, and the drive motor 33 is started to drive the drive sleeve 34 to rotate, so that the internal sliding rod 36 and the serrated thread plate 37 rotate synchronously to cut and aspirate. During the rotation, the limiting block 38 on the sliding rod 36 contacts and abuts against the inclined block 39 inside the L-shaped syringe 32. This forces the sliding rod 36 to move inward against the elastic force of the return spring 35; when the limit block 38 passes the inclined block 39 and releases the contact, the return spring 35 quickly pushes the sliding rod 36 back to its original position, so that the serrated thread plate 37 moves back and forth continuously while rotating; the advantage of this design is that the serrated thread plate, in combination with the rotation and reciprocating punching action, can effectively cut and crush hard stones, prevent large pieces of debris from getting stuck inside the L-shaped syringe 32, and ensure the smooth flow of the entire waste liquid pipeline; Simultaneously, after the surgery is completed and the pulverizing and pushing mechanism 3 and the filtering and separating mechanism 2 are discontinued, the cleaning mechanism 4 is used to clean the internal tubing of the entire device. The external block 31, along with the L-shaped syringe 32, is secured to the placement hook 7, allowing the L-shaped syringe 32 to be directly immersed in the cleaning solution in the cleaning bottle 41 below. At this time, the drive motor 33 is activated, using the rotation and reciprocating movement of the serrated thread plate 37 inside the L-shaped syringe 32 to scrub away any residue on the tubing wall. Simultaneously, under the action of the negative pressure device 1, the cleaning solution is... The solution is drawn into the syringe 32, passes through the suction tube 42 into the negative pressure device 1, and then flows through the guide tube 43 to the three-way valve 44. By controlling the orientation of the three-way valve 44, the waste liquid after cleaning can be directed into the designated storage tank 5. Finally, the empty drain valve 45 at the bottom of the storage tank 5 is opened to discharge the waste liquid. The advantage of this design is that, without disassembling the main pipeline, the mechanical brushing of the internal structure combined with negative pressure flushing can quickly remove the residues attached to the tube wall, avoid the accumulation of waste liquid and cause infection, and greatly reduce the cumbersome degree of manual cleaning after surgery.
[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An arthroscopic waste fluid aspiration device with rapid self-cleaning function, comprising a negative pressure device (1), characterized in that, Storage tanks (5) are fixedly connected to both sides of the negative pressure device (1). A tank cover (6) is installed on the top of the storage tank (5). The tank cover (6) has a feed inlet. A filter separation mechanism (2) is provided on the outside of the tank cover (6). The filter separation mechanism (2) includes a servo motor (23) fixedly connected to the top of the tank cover (6), and a filter drum (21) and a separation drum (22) rotatably connected to the tank cover (6). A placement hook (7) is fixedly connected to the outside of the negative pressure device (1). A crushing and pushing mechanism (3) is provided on the outside of the placement hook (7). A cleaning mechanism (4) is provided on the outside of the negative pressure device (1). An empty drain valve (45) is provided on the outside of the storage tank (5).
2. The arthroscopic waste fluid suction device with rapid self-cleaning function according to claim 1, characterized in that, The filter drum (21) is rotatably connected to the outside of the can cover (6), the separation drum (22) is rotatably connected to the bottom side of the can cover (6), the output end of the servo motor (23) is fixedly connected to the rotating shaft (24), the other end of the rotating shaft (24) is fixedly connected to the inside of the filter drum (21), and the outside of the rotating shaft (24) is fixedly connected to the linkage gear (25).
3. The arthroscopic waste fluid suction device with rapid self-cleaning function according to claim 1, characterized in that, The crushing and pushing mechanism (3) includes an outer block (31), which is located inside the placement hook (7) and engages with it. An L-shaped syringe (32) is fixedly connected to the inner side of the outer block (31), and a drive motor (33) is fixedly connected to the outer side of the outer block (31). A drive sleeve (34) is fixedly connected to the output end of the drive motor (33). A sliding rod (36) is slidably connected to the inner side of the drive sleeve (34), and a serrated thread plate (37) is fixedly connected to the outer side of the sliding rod (36). The serrated thread plate (37) is located inside the L-shaped syringe (32).
4. The arthroscopic waste fluid aspiration device with rapid self-cleaning function according to claim 3, characterized in that, The cleaning mechanism (4) includes a cleaning bottle (41) installed outside the negative pressure device (1). The cleaning bottle (41) is positioned directly below the placement hook (7). The L-shaped syringe (32) is connected to a suction tube (42) at one end away from the external block (31). The other end of the suction tube (42) is connected to the negative pressure device (1). A guide tube (43) is connected to the outside of the negative pressure device (1). The other end of the guide tube (43) is connected to a three-way valve (44). The three-way valve (44) is connected to the feed inlet of the can lid (6).
5. The arthroscopic waste fluid aspiration device with rapid self-cleaning function according to claim 1, characterized in that, The emptying valve (45) is located on the outside of the bottom of the storage tank (5). The emptying valve (45) is connected to the inside of the storage tank (5). The negative pressure device (1) is connected to the outside of the suction plate (8).
6. The arthroscopic waste fluid aspiration device with rapid self-cleaning function according to claim 2, characterized in that, The bottom end of the can lid (6) is rotatably connected to a central gear (26), the outer side of the central gear (26) meshes with the linkage gear (25), the inner side of the separating drum (22) is fixedly connected to a drive sleeve (28) sleeved on the outer side of the rotating shaft (24), the outer side of the drive sleeve (28) is fixedly connected to a reduction gear (27), and the reduction gear (27) meshes with the central gear (26).
7. The arthroscopic waste fluid suction device with rapid self-cleaning function according to claim 6, characterized in that, The bottom end of the can cover (6) is detachably fitted with a collection sleeve (29), which is sleeved on the outside of the filter drum (21). The separation drum (22) is attached to the inside of the filter drum (21). A spiral push plate is fixedly connected to the outside of the separation drum (22). A discharge port is opened at the top of the filter drum (21).
8. The arthroscopic waste fluid suction device with rapid self-cleaning function according to claim 3, characterized in that, A return spring (35) is fixedly connected to the inner side of the drive sleeve (34), and the other end of the return spring (35) is fixedly connected to the sliding rod (36). An inclined block (39) is fixedly connected to the inner side of the L-shaped syringe (32), and a limiting block (38) that abuts against the inclined block (39) is fixedly connected to the outer side of the sliding rod (36).
9. The arthroscopic waste fluid suction device with rapid self-cleaning function according to claim 8, characterized in that, The central axis of the sliding rod (36) coincides with the central axis of the drive sleeve (34). Multiple limiting blocks (38) are provided, and the multiple limiting blocks (38) are arranged in a ring array on the outside of the sliding rod (36). The number of inclined blocks (39) is matched with the number of limiting blocks (38). The outer side of the sawtooth thread plate (37) has a sawtooth structure.
10. An arthroscopic waste fluid aspiration device with rapid self-cleaning function according to claim 4, characterized in that, The straw (42) is a flexible connecting tube. The two ends of the guide tube (43) are fixedly connected to the negative pressure device (1) and the three-way valve (44) respectively. When the external block (31) is engaged with the placement hook (7), the L-shaped syringe (32) extends into the interior of the cleaning bottle (41).