CN215537041U

CN215537041U - Supplementary knee joint chamber drawing liquid device

Info

Publication number: CN215537041U
Application number: CN202121840813.3U
Authority: CN
Inventors: 刘云龙
Original assignee: Luoyang Orthopedic Traumatological Hospital of Henan Orthopedic Hospital
Current assignee: Luoyang Orthopedic Traumatological Hospital of Henan Orthopedic Hospital
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-01-18
Anticipated expiration: 2031-08-09

Abstract

A supplementary knee joint cavity drawing liquid device, the purpose of saving manpower when effectively achieving knee joint cavity extrusion, including bed body and rotating plate, the upside front and back symmetry of said rotating plate respectively connects with a first magic subsides, the upside front and back symmetry of said rotating plate respectively connects with a moving plate, the left side of each said moving plate has a fixed band, the right side of each fixed band has a rotating rod fixedly connected with, one side of each rotating rod near the corresponding first magic subsides has a ratchet wheel slidably connected, the top of each ratchet wheel has a ratchet block rotatably connected with the corresponding moving plate, the top of each said ratchet block has a tension spring fixedly connected, the inside of each said rotating rod has a first spring, the utility model is novel in structure, ingenious in conception, simple and convenient in operation, effectively solves the function of conveniently bandaging after operation, the purpose of avoiding secondary injury to the patient during dressing is achieved.

Description

Supplementary knee joint chamber drawing liquid device

Technical Field

The utility model relates to the technical field of medical auxiliary devices, in particular to an auxiliary knee joint cavity liquid pumping device.

Background

The synovial membrane in the knee joint is a layer of membranous tissue that surrounds the knee joint and not only protects the joint, but also produces joint fluid, which provides "lubricating fluid" for the movement of the joint. The generation and absorption of the joint fluid are dynamic balance, when the reabsorption obstacle of the joint fluid appears, the generation and absorption dynamic balance of the joint fluid is broken, the generation of the joint fluid is larger than the reabsorption, joint effusion appears, most of the current hospitals have excessive effusion, an assistant is enabled to help a doctor to squeeze a patient, the squeezing pressure degree of the assistant is gradually reduced under the long-time squeezing, the incomplete liquid pumping effect is influenced, manpower waste is also caused, after the liquid pumping of the patient, the rehabilitation training of the patient cannot be assisted, the recovery speed of the patient is easily influenced, when the leg of the patient needs to be lifted, a good auxiliary tool is not provided, the discomfort of wrapping the leg of the patient can be caused, after the liquid pumping, the effusion cup does not have a collection function, and the trouble needs to be found additionally, there is therefore a need for a knee joint fluid extraction device that can squeeze the knee joint and raise the patient's leg.

SUMMERY OF THE UTILITY MODEL

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the auxiliary knee joint cavity liquid pumping device which is novel in structure, ingenious in conception and simple and convenient to operate, effectively achieves the purpose of saving manpower during knee joint cavity extrusion, increases the function of wrapping a patient after an operation, achieves the purpose of avoiding secondary damage to the patient during wrapping, increases the functions of facilitating collection and collection of a doctor, and achieves the purpose of facilitating collection and assay while collecting effusion.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model comprises a bed body and a rotating plate, wherein the upper side of the rotating plate is fixedly connected with a first magic tape in a front-back symmetrical manner, the upper side of the rotating plate is connected with a moving plate in a front-back symmetrical manner, the left side of each moving plate is provided with a fixing band, the right side of each fixing band is fixedly connected with a rotating rod, one side of each rotating rod, which is close to the corresponding first magic tape, is connected with a ratchet wheel in a sliding manner, a ratchet block rotatably connected with the corresponding moving plate is arranged above each ratchet wheel, a tension spring is fixedly connected above each ratchet block, a first spring is arranged inside each rotating rod, each first spring, each tension spring, each ratchet block and the corresponding ratchet wheel are mutually matched to form a limiting structure of the corresponding rotating rod, the lower side of the rotating plate is rotatably connected with a screw rod, the left side of the screw rod is meshed with a gear, and the outer side of the screw rod is connected with a moving block in a threaded manner, the downside of movable block rotates and is connected with a first sole, and the front side rotation of first sole is connected with a second sole, and lead screw, gear and movable block mutually support and form the limit structure of first sole and second sole, the rear side of the bed body is equipped with a folding mechanism, the bed body downside is equipped with a plurality of storing boxes, and the inside of every storing box all is equipped with a collection mechanism.

Preferably, the folding mechanism comprises a sliding block in sliding connection with the bed body, a first rotating plate is rotatably connected to the upper side of the sliding block, a second rotating plate is rotatably connected to the right side of the first rotating plate, a third rotating plate is rotatably connected to the right side of the second rotating plate, and a detachable sponge cushion is arranged on the rear side of the third rotating plate.

Preferably, the collecting mechanism comprises a base, a small collecting bottle is fixedly connected to the upper surface of the base, a liquid accumulation bottle is fixedly connected to the upper side of the small collecting bottle, a conical leakage opening is formed in the upper side of the liquid accumulation bottle, a fixing cover is arranged on the upper side of the conical leakage opening, a top plate is connected to the small collecting bottle in a sliding mode, a pull rod is fixedly connected to the lower side of the top plate, a second spring is sleeved on the outer side of the pull rod, and the pull rod and the second spring are matched with each other to form a limiting structure of the top plate.

Preferably, the upside of the bed body is connected with a backup plate in a rotating manner, the bilateral symmetry of the downside of the backup plate is respectively connected with a hydraulic rod in a rotating manner, the lower surface of the bed body is fixedly connected with a fixing plate, the lower end of each hydraulic rod is connected with the fixing plate in a rotating manner, and each hydraulic rod and the bed body are matched with each other to form a limiting structure of the backup plate.

Preferably, the upside bilateral symmetry of the bed body respectively rotates and is connected with a backup pad, and the upside of every backup pad all rotates and is connected with two stoppers, and every stopper mutually supports with the bed body and forms the limit structure who corresponds the backup pad, two third magic subsides of downside fixedly connected with of first sole.

Preferably, a plurality of spouts, every have all been seted up to the left and right sides of the bed body the both sides all are arranged in corresponding spout and can follow the spout horizontal slip that corresponds around the commentaries on classics board, and the left side of commentaries on classics board is rotated and is connected with two latch blocks, and every latch block forms the limit structure who changes the board with the spout that corresponds mutually supporting, the upside of changeing the board is equipped with two second magic subsides, and every second magic is pasted all with the movable plate fixed connection that corresponds, change a motor of downside fixedly connected with of board, motor and gear fixed connection.

The utility model has novel structure, ingenious design and simple and convenient operation, effectively achieves the purpose of saving manpower during knee joint cavity extrusion through the design, adds the function of wrapping the patient after the operation, achieves the purpose of not secondarily hurting the patient during wrapping, adds the function of convenient collection and collection of doctors, and achieves the purposes of collecting the accumulated liquid and conveniently collecting and testing the accumulated liquid.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of the overall folding of the present invention.

FIG. 3 is an enlarged view of the position A in FIG. 1 according to the present invention.

Fig. 4 is a schematic cross-sectional view of leg extrusion according to the present invention.

Fig. 5 is a right side view of leg compression in accordance with the present invention.

FIG. 6 is a schematic diagram of the gear and the rotating rod of the present invention.

FIG. 7 is a schematic cross-sectional view of the gear and the rotating shaft of the present invention.

Fig. 8 is a schematic view of a leg exercise structure according to the present invention.

FIG. 9 is a schematic view of the collection mechanism of the present invention.

FIG. 10 is a cross-sectional view of the collecting mechanism of the present invention.

Fig. 11 is a schematic view of the folding mechanism of the present invention.

In the figure: 1-bed body, 2-rotating plate, 3-first magic tape, 4-moving plate, 5-fixing band, 6-rotating rod, 7-ratchet wheel, 8-ratchet block, 9-tension spring, 10-first spring, 11-screw rod, 12-gear, 13-first foot plate, 14-second foot plate, 15-fixing plate, 16-folding mechanism, 17-collecting mechanism, 18-sliding block, 19-first rotating plate, 20-second rotating plate, 21-third rotating plate, 22-sponge pad, 23-base, 24-small collecting bottle, 25-liquid-accumulating bottle, 26-top plate, 27-pulling rod, 28-second spring, 29-storage box, 30-backing plate, 31-hydraulic rod, 32-second magic tape, 32-first magic tape, 6-rotating rod, 7-ratchet wheel, 9-tension spring, 10-first spring, 11-screw rod, 12-second rotating plate, 23-second rotating plate, 24-small collecting bottle, 25-liquid-collecting bottle, 26-top plate, 27-pulling rod, 28-second spring, 30-storage box, 31-backing plate, 32-second magic tape, 32-second rotating plate, 32-rotating rod, 3-second rotating plate, and 32-second rotating plate, 33-a motor, 34-a supporting plate, 35-a limiting block, 36-a third magic tape, 37-a moving block, 38-a conical leak, 39-a fixed cover, 40-a chute and 41-a locking block.

Detailed Description

The following description of the present invention will be made in detail with reference to the accompanying drawings 1 to 11.

In the first embodiment, as shown in fig. 1, fig. 2, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10 and fig. 11, the utility model comprises a bed body 1 and a rotating plate 2, in order to achieve the purpose of not occupying more manpower when extruding, the bed body 1 comprises a bed body 1, the upper side of the rotating plate 2 is symmetrically and fixedly connected with a first magic tape 3 in front and back, after the leg of a patient is anesthetized, the first magic tape 3 fixes the leg to prevent the leg from shaking when extruding, the upper side of the rotating plate 2 is symmetrically and slidably connected with a moving plate 4 in front and back, the left side of each moving plate 4 is provided with a fixing band 5, the left end of the fixing band 5 is buckled in the hole of the moving plate 4 by a harder material, the right side of each fixing band 5 is fixedly connected with a rotating rod 6, one side of each rotating rod 6 close to the corresponding first magic tape 3 is slidably connected with a ratchet wheel 7, a ratchet block 8 which is rotatably connected with the corresponding moving plate 4 is arranged above each ratchet wheel 7, a tension spring 9 is fixedly connected above each ratchet block 8, a first spring 10 is arranged inside each rotating rod 6, each first spring 10, each tension spring 9, each ratchet block 8 and the corresponding ratchet wheel 7 are matched with each other to form a limiting structure of the corresponding rotating rod 6, when in use, the middle of the moving plate 4 with legs placed on the rotating plate 2 is buckled in a hole of the moving plate 4 by a harder material at the left end of the fixing belt 5, the position of the moving plate 4 is adjusted, the ratchet wheel 7 drives the rotating rod 6 by rotating the ratchet wheel 7 to the right, the rotating rod 6 drives the fixing belt 5 to fix the legs of a patient, the moving plates 4 at two ends slide to move oppositely after fixing is finished, when the moving plates move to a designated position, the moving plates 4 at two ends are fixed by a second magic tape 32, and effusion can be extracted, manpower is saved, the fixing belt 5 can drive meat of the leg to be extruded when the fixing belt moves, the force for extruding the leg up and down can be adjusted through the ratchet wheel 7, the force for extruding the leg of the patient can be adjusted, the leg can be taken out conveniently, after liquid pumping is finished, the ratchet wheel 7 is pressed, the ratchet wheel 7 extrudes the first spring 10 to move inwards, the outer side of the ratchet wheel 7 is separated from the fixing of the ratchet block 8, the ratchet wheel 7 can rotate rapidly from fingers, so that the fixing of the ratchet wheel 7 is released, the left end of the fixing belt 5 is released from the hole of the moving plate 4, the problem of manpower saving during extrusion is solved, the lower side of the rotating plate 2 is rotatably connected with a screw rod 11, the left side of the screw rod 11 is meshed with a gear 12, the outer side of the screw rod 11 is in threaded connection with a moving block 37, the lower side of the moving block 37 is rotatably connected with a first foot plate 13, the front side of the first foot plate 13 is rotatably connected with a second foot plate 14, the screw rod 11, the gear 12 and the moving block 37 are mutually matched to form a limiting structure of the first foot plate 13 and the second foot plate 14, when a patient needs rehabilitation exercise, the rotating plate 2 slides out of the sliding groove 40 to turn over and then slides in, the locking block 41 is rotated into the sliding groove 40 to be fixed, the locking block 41 is in interference fit with the sliding groove 40 at the moment, the leg part is fixed on the third magic paste 36, then the motor 33 is started, the motor 33 drives the gear 12, the gear 12 drives the screw rod 11 to rotate, the screw rod 11 drives the moving block 37 to move, the moving block 37 drives the first foot plate 13 to turn over, the second foot plate 14 is driven to rotate and lift while rotating, at the moment, the second foot plate 14 rotates along the rotating plate 2, the lifting angle is smaller than 180 degrees, the first foot plate 13 moves along the auxiliary rod while rotating, the patient can conveniently take rehabilitation exercise, and simultaneously the first foot plate 13 and the second foot plate 14 are supported, also make things convenient for the patient to sit the drawing of fluid, the rear side of bed body 1 is equipped with a folding mechanism 16, 1 downside of bed body is equipped with a plurality of storing boxes 29, and the inside of every storing box 29 all is equipped with a collection mechanism 17 and deposits collection mechanism 17 through storing box 29 when not using.

In the second embodiment, based on the first embodiment, as shown in fig. 1, 2 and 11, in order to achieve the purpose of better wrapping the legs, the folding mechanism 16 includes a sliding block 18 slidably connected to the bed body 1, a first rotating plate 19 is rotatably connected to an upper side of the sliding block 18, a transverse block is fixedly connected to one side of the first rotating plate 19, the transverse block is inserted into the bed body 1 when being unfolded to form an interference fit, so that the stability of the folding mechanism 16 is enhanced, a second rotating plate 20 is rotatably connected to a right side of the first rotating plate 19, a third rotating plate 21 is rotatably connected to a right side of the second rotating plate 20, a detachable sponge pad 22 is arranged at a rear side of the third rotating plate 21, a limiting plate is rotatably connected to both sides of the bed body 1 to fix the left and right sides of the folding mechanism 16, the limiting plate is opened when in use, and then the first rotating plate 19 is opened, Second rotor plate 20, third rotor plate 21 is folded, position according to the shank after the folding completion, move by slider 18 and put the shank above and conveniently wrap, move slider 18 to one end when not using, then with first rotor plate 19, second rotor plate 20 and third rotor plate 21 expand, expand the back and insert the horizontal piece of second rotor plate 20 one side in the bed body 1, increase the fixity, then carry on spacingly by the limiting plate, do not occupy the position, make things convenient for the patient to wrap.

Third embodiment, based on the first embodiment, as shown in fig. 1, 4, 10 and 11, in order to achieve the purpose of better collecting, the collecting mechanism 17 includes a base 23, a small collecting bottle 24 is fixedly connected to the upper surface of the base 23, a liquid accumulating bottle 25 is fixedly connected to the upper side of the small collecting bottle 24, a tapered leak 38 is provided on the upper side of the liquid accumulating bottle 25, a fixing cover 39 is provided on the upper side of the tapered leak 38, a top plate 26 is slidably connected to the inside of the small collecting bottle 24, a pull rod 27 is fixedly connected to the lower side of the top plate 26, a second spring 28 is sleeved on the outer side of the pull rod 27, the pull rod 27 and the second spring 28 cooperate to form a limiting structure of the top plate 26, the collecting mechanism 17 is opened, and a doctor holds the needle with one hand during the liquid drawing process to prevent the secondary injury to the legs of the patient due to tilting, the other hand aims the extracted liquid at the conical leakage opening 38 of the collecting mechanism 17, so that the doctor can conveniently press with one hand, the situation that bacterial infection is caused when the other hand touches the needle opening when pressing with two hands is avoided, after the liquid is completely extracted, the pull rod 27 at the bottom is pressed, the pull rod 27 extrudes the second spring 28, the top plate 26 moves upwards, a gap is formed during the movement, the accumulated liquid flows into the small collecting bottle 24, the pull rod 27 is loosened after the accumulated liquid is completely extracted, the pull rod 27 and the top plate 26 are driven to reset by the second spring 28, the small collecting bottle 24 is sealed at the moment, the redundant accumulated liquid is treated, the fixing cover 39 is buckled after the treatment, when the color of the accumulated liquid changes, the bottle opening of the collecting mechanism 17 is downward when the assay is needed, the pull rod 27 is pressed to drive the top plate 26 to move downwards, the accumulated liquid flows into the accumulated liquid bottle 25, the pull rod 27 is loosened after the accumulated liquid flows out, the fixing cover 39 and the conical leakage opening 38 are removed, the assay can be carried out, and the collection and assay are convenient.

Fourth embodiment, on the basis of the first embodiment, as shown in fig. 1 and 2, the upper side of the bed body 1 is rotatably connected with a backup plate 30, the lower side of the backup plate 30 is respectively rotatably connected with a hydraulic rod 31 in a bilateral symmetry manner, the prior art is not described much, the lower surface of the bed body 1 is fixedly connected with a fixing plate 15, the lower end of each hydraulic rod 31 is rotatably connected with the fixing plate 15, each hydraulic rod 31 and the bed body 1 are mutually matched to form a limiting structure of the backup plate 30, and the backup plate 30 can be lifted by the hydraulic rods 31 according to the condition of a patient.

Fifth embodiment, on the basis of second embodiment, by figure 1, figure 2 and figure 8, for the better purpose that reaches the support shank, each backup pad 34 of bilateral symmetry of the upside of bed body 1, the upside of every backup pad 34 all rotates and is connected with two stopper 35, every stopper 35 and bed body 1 mutually support and form the limit structure who corresponds backup pad 34, according to the condition of the leg about the patient, can carry out corresponding backup pad 34 and rotate the use, carry out the rotation spacing and the release to backup pad 34 through rotating stopper 35, the downside fixedly connected with of second sole 14 has two third magic subsides 36 to reach the effect of fixed shank.

Sixth embodiment, on the basis of the second embodiment, with reference to fig. 1, 2, 3, 4 and 5, in order to better adjust the position of the rotating plate 2 according to the left and right legs of the patient, the left and right sides of the bed body 1 are both provided with a plurality of sliding slots 40, the front and rear sides of each rotating plate 2 are both disposed in the corresponding sliding slots 40 and can slide left and right along the corresponding sliding slots 40, the left side of the rotating plate 2 is rotatably connected with two locking blocks 41, each locking block 41 and the corresponding sliding slot 40 are mutually matched to form a limiting structure of the rotating plate 2, when fixed, the locking blocks 41 are rotated into the sliding slots 40, at this time, an interference fit is formed, for the purpose of better fixing the legs, the upper side of the rotating plate 2 is provided with two second magic tapes 32, each second magic tape 32 is fixedly connected with the corresponding moving plate 4, the second magic tape 32 plays a role of fixing the legs, the lower side of the rotating plate 2 is fixedly connected with a motor 33, the motor 33 is fixedly connected with the gear 12 to achieve the effect of rotating the screw rod 11.

When the utility model is used, the middle of a moving plate 4 with legs placed on a rotating plate 2 is buckled in a hole of the moving plate 4 by a harder material at the left end of a fixing belt 5, the position of the moving plate 4 is adjusted, the ratchet 7 is rotated rightwards, the ratchet 7 drives a rotating rod 6, the rotating rod 6 drives the fixing belt 5 to fix the legs of a patient, the moving plates 4 at two ends are slid to move oppositely after the fixing is finished, when the moving plates are moved to a specified position, the moving plates 4 at two ends are fixed by a second magic tape 32, effusion can be extracted, manpower is saved, the fixing belt 5 can drive meat of the legs to be extruded when the moving plates move, the force of up-down extrusion can be adjusted by the ratchet 7, the force of extrusion of the legs of the patient can be adjusted, the legs of the patient can be conveniently taken out, after liquid extraction is finished, the ratchet 7 is pressed, the ratchet 7 extrudes a first spring 10 to move inwards, and the outer side of the ratchet 7 is separated from the fixing of a ratchet block 8, the ratchet 7 can rapidly rotate from the fingers, so that the fixation of the ratchet 7 is released, the left end of the fixing belt 5 is released from the hole of the moving plate 4 for limiting, and the problem of labor saving during extrusion is solved, when a patient needs rehabilitation exercise, the rotating plate 2 slides out of the sliding groove 40 for overturning and then slides in, the locking block 41 is rotated into the sliding groove 40 for fixation, the locking block 41 and the sliding groove 40 are in interference fit, the leg part is fixed on the third magic tape 36, then the motor 33 is started, the motor 33 drives the gear 12, the gear 12 drives the screw rod 11 to rotate, the screw rod 11 drives the moving block 37 to move, the moving block 37 drives the first foot plate 13 to overturn, the second foot plate 14 is driven to rotate and rise while rotating, the second foot plate 14 rotates along the rotating plate 2, the rising angle is smaller than 180 degrees, the first foot plate 13 moves along the auxiliary rod while rotating, make things convenient for the patient to carry out the rehabilitation exercise, first sole 13 and second sole 14 support the time simultaneously, also make things convenient for the patient to sit the drawing liquid, open through the limiting plate when using, then with first rotor plate 19, second rotor plate 20, third rotor plate 21 is folded, position according to the shank after the folding completion, remove by slider 18 and put the shank above and conveniently wrap, move slider 18 to one end when not using, then with first rotor plate 19, second rotor plate 20 and third rotor plate 21 expand, insert the bed body 1 with the horizontal piece of second rotor plate 20 one side after the expansion, increase the fixity, then it is spacing by the limiting plate, do not occupy the position, make things convenient for the patient to wrap.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an auxiliary knee joint cavity liquid pumping device, includes the bed body (1) and changes board (2), its characterized in that, the upside of changeing board (2) respectively fixedly connected with a first magic subsides (3) of symmetry around the upside, the upside of changeing board (2) respectively sliding connection have a movable plate (4) around the upside, every the left side of movable plate (4) all is equipped with a fixed band (5), the right side of every fixed band (5) all fixedly connected with a bull stick (6), one side that every bull stick (6) is close to corresponding first magic subsides (3) all sliding connection has a ratchet (7), the top of every ratchet (7) all is equipped with a thorn piece (8) of rotating connection with corresponding movable plate (4), every the top of thorn piece (8) all fixedly connected with an extension spring (9), every the inside of bull stick (6) is equipped with a first spring (10), each first spring (10), each tension spring (9), each ratchet block (8) and the corresponding ratchet wheel (7) are mutually matched to form a limiting structure corresponding to the rotating rod (6), the lower side of the rotating plate (2) is rotationally connected with a screw rod (11), the left side of the screw rod (11) is engaged with a gear (12), a moving block (37) is connected to the outer side of the lead screw (11) in a threaded manner, a first foot plate (13) is rotatably connected to the lower side of the moving block (37), a second foot plate (14) is rotatably connected to the front side of the first foot plate (13), the lead screw (11), the gear (12) and the moving block (37) are matched with each other to form a limiting structure of the first foot plate (13) and the second foot plate (14), the utility model discloses a bed, including bed body (1), the rear side of bed body (1) is equipped with a folding mechanism (16), bed body (1) downside is equipped with a plurality of storing boxes (29), and the inside of every storing box (29) all is equipped with one and collects mechanism (17).

2. The auxiliary knee joint cavity fluid pumping device according to claim 1, wherein the folding mechanism (16) comprises a sliding block (18) slidably connected with the bed body (1), a first rotating plate (19) is rotatably connected to the upper side of the sliding block (18), a second rotating plate (20) is rotatably connected to the right side of the first rotating plate (19), a third rotating plate (21) is rotatably connected to the right side of the second rotating plate (2), and a detachable sponge pad (22) is arranged at the rear side of the third rotating plate (21).

3. The auxiliary knee joint cavity fluid extraction device according to claim 1, wherein the collection mechanism (17) comprises a base (23), a small collection bottle (24) is fixedly connected to the upper surface of the base (23), a fluid accumulation bottle (25) is fixedly connected to the upper side of the small collection bottle (24), a conical leakage opening (38) is formed in the upper side of the fluid accumulation bottle (25), a fixing cover (39) is arranged on the upper side of the conical leakage opening (38), a top plate (26) is slidably connected to the inside of the small collection bottle (24), a pull rod (27) is fixedly connected to the lower side of the top plate (26), a second spring (28) is sleeved on the outer side of the pull rod (27), and the pull rod (27) and the second spring (28) are matched with each other to form a limit structure of the top plate (26).

4. The auxiliary knee joint cavity fluid extraction device according to claim 1, wherein the upper side of the bed body (1) is rotatably connected with a backup plate (30), the lower side of the backup plate (30) is respectively rotatably connected with a hydraulic rod (31) in a bilateral symmetry manner, the lower surface of the bed body (1) is fixedly connected with a fixing plate (15), the lower end of each hydraulic rod (31) is rotatably connected with the fixing plate (15), and each hydraulic rod (31) and the bed body (1) are mutually matched to form a limiting structure of the backup plate (30).

5. The auxiliary knee joint cavity liquid pumping device according to claim 1, wherein the upper side of the bed body (1) is bilaterally symmetrical and is respectively and rotatably connected with one support plate (34), the upper side of each support plate (34) is rotatably connected with two limit blocks (35), each limit block (35) and the bed body (1) are mutually matched to form a limit structure corresponding to the support plate (34), and the lower side of the first foot plate (13) is fixedly connected with two third magic tapes (36).

6. The auxiliary knee joint cavity liquid pumping device according to claim 1, wherein a plurality of sliding grooves (40) are formed in the left side and the right side of the bed body (1), the front side and the rear side of each rotating plate (2) are arranged in the corresponding sliding grooves (40) and can slide left and right along the corresponding sliding grooves (40), two locking blocks (41) are rotatably connected to the left side of the rotating plate (2), each locking block (41) is matched with the corresponding sliding groove (40) to form a limiting structure of the rotating plate (2), two second magic tapes (32) are arranged on the upper side of the rotating plate (2), each second magic tape (32) is fixedly connected with the corresponding sliding groove (4), a motor (33) is fixedly connected to the lower side of the moving plate of the rotating plate (2), and the motor (33) is fixedly connected with the gear (12).