Auxiliary knee joint effusion extraction device for orthopedics department

Abstract

The invention belongs to the field of extraction devices, and particularly relates to an orthopedic knee joint effusion auxiliary extraction device which comprises a fixing plate, a round hole is formed in the middle of the fixing plate, a needle cylinder and a needle head penetrate through the round hole, a pressing mechanism is arranged at the rear end of the fixing plate, and the pressing mechanism is used for pressing the needle cylinder and the needle head in the effusion extraction process. The knee joint of a patient is automatically pressed, clamping mechanisms are arranged on the left side, the right side and the top end of the needle and used for clamping and fixing the needle in the hydrops extraction process, and a supporting assembly is arranged at the bottom end of the needle cylinder and used for supporting and fixing the needle cylinder. Through the structural design of the pressing mechanism, the two sets of pressing plates can be close to each other to achieve the pressing purpose while medical staff keep the needle tube in an extraction state, so that the knee joint of a patient can be automatically pressed when effusion is extracted, and the extraction process is more convenient and faster.

Description

Technical Field

[0001] The invention relates to the field of extraction devices, in particular to an auxiliary extraction device for knee joint effusion used in orthopedics. Background Art

[0002] Under normal circumstances, the synovial fluid content in the human knee joint is relatively small, and it will continuously circulate and renew in a dynamic equilibrium state. However, once this balance is broken, joint effusion will form, causing joint swelling and discomfort. When there is a lot of effusion, medical staff will use a syringe to extract the excess joint effusion.

[0003] According to the patent document CN202210303421.6, an orthopedic knee joint effusion auxiliary extraction device is proposed. The present invention provides an orthopedic knee joint effusion auxiliary extraction device that can fix the patient's legs and will not affect the extraction operation of the staff. The present invention provides such an orthopedic knee joint effusion auxiliary extraction device, including: a base, a first slider is symmetrically arranged in the front and rear sliding manner in the right part of the base; a seat, a seat for the patient to sit on is arranged between the two first sliders; a support seat, a support seat is arranged on the left part of the base. Under the action of the first arc plate, the patient's calf is limited, and the pressing block slides downward through the first connecting rod and the third guide rod to drive the second arc plate to move downward and contact the patient's thigh, thereby limiting the patient's thigh, avoiding the patient from moving his legs due to pain during the extraction of the effusion auxiliary extraction device, which causes inconvenience to the staff.

[0004] However, in the knee joint effusion auxiliary extraction device of the above-mentioned technology, in order to facilitate the smooth extraction of joint effusion, the medical staff will press the swollen part of the patient's knee joint towards the needle tube during the extraction using a needle tube. Since the medical staff still needs to support the needle tube and keep the needle tube in the extraction state during the pressing process, the operation process will be more inconvenient and fluid residue will easily occur. Therefore, in view of the above-mentioned problem, an orthopedic knee joint effusion auxiliary extraction device is proposed. Summary of the invention

[0005] In order to solve the problem of knee joint effusion auxiliary extraction device in the above-mentioned technology, in order to facilitate the smooth extraction of joint effusion, medical staff will press the swollen part of the patient's knee joint towards the needle tube during the extraction using a needle tube. Since the medical staff still needs to support the needle tube and keep the needle tube in the extraction state during the pressing process, the operation process will be more inconvenient and the problem of residual effusion will easily occur. The present invention proposes an orthopedic knee joint effusion auxiliary extraction device.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the orthopedic knee joint effusion auxiliary extraction device described in the present invention comprises a fixing plate, a circular hole is opened in the middle of the fixing plate, a syringe and a needle are passed through the circular hole, a pressing mechanism is arranged at the rear end of the fixing plate, the pressing mechanism is used to automatically press the patient's knee joint during the process of extracting the effusion, the left and right sides and the top of the needle are both provided with clamping mechanisms, the clamping mechanism is used to clamp and fix the needle during the process of extracting the effusion, and a supporting assembly is arranged at the bottom end of the syringe, the supporting assembly is used to clamp the syringe The supporting and fixing is performed, and the pressing mechanism includes two groups of pressing plates, the front end of the pressing plate is fixedly connected to the special-shaped rod, the front end of the special-shaped rod is fixedly connected to the slider, the slider is slidably connected to the inside of the through slot, the through slot passes through the fixed plate, the inner wall of the through slot is fixedly connected with a mounting rod, the mounting rod passes through the slider, the front end of the slider is fixedly connected with a T-shaped block, the T-shaped block is slidably connected to the inside of the guide groove, the guide groove is opened on the rotating disk, the rear end of the rotating disk is fixedly connected with a rotating block, the rotating block is rotatably connected to the fixed plate, and a transmission mechanism is arranged at the bottom end of the rotating disk.

[0007] Preferably, the transmission mechanism includes a worm wheel, which is rotatably connected to the fixed plate, the worm wheel is meshed with the bottom end portion of the rotating disk, the bottom end of the worm wheel is meshed with a worm, the worm is sleeved in the middle of the rotating shaft, a plurality of sets of retaining frames are sleeved on the left and right sides of the rotating shaft, the retaining frames are fixedly connected to the fixed plate, the left and right sides of the rotating shaft are fixedly connected with gears, the side of the gear away from the rotating shaft is rotatably connected to the inner wall of the fixed shell, the fixed shell is fixedly connected to the fixed plate, the gear is meshed with a rack, and the top end of the rack is fixed A sliding rod is connected, and the sliding rod and the rack are both slidably connected in the sliding groove, the sliding groove is opened at the front end of the fixed plate, the front end of the sliding rod is rotatably connected with a connecting rod, the front end of the connecting rod is rotatably connected to the moving frame, the rear end of the moving frame abuts against the piston inside the syringe, a trapezoidal block is fixedly connected to the moving frame, the trapezoidal block is slidably connected to the trapezoidal groove, the trapezoidal groove is opened on the fixed rod, the rear end of the fixed rod is fixedly connected to a protective shell, the protective shell is fixedly connected to the fixed plate, and the protective shell is sleeved on the outside of the rotating disk.

[0008] Preferably, the clamping mechanism includes three groups of clamping blocks, the clamping blocks are all in contact with the needle, the clamping blocks are located on the left and right sides of the syringe and the top of the syringe, the clamping blocks on both sides are fixedly connected with an insertion rod, the insertion rod is inserted in the interior of the insertion column, the insertion column is fixedly connected to the sliding block, the insertion rod is fixedly connected to the second spring, the second spring is inserted in the interior of the insertion column, the second spring is fixedly connected to the inner wall of the insertion column, the clamping block at the top is fixedly connected to the sliding frame, the top of the sliding frame is fixedly connected with a first spring, the first spring is in a stretched state, the top of the first spring is fixedly connected to the fixed block, the fixed block is fixedly connected to the fixed plate, the bottom end of the fixed block is fixedly connected with two groups of guide columns, the guide columns are inserted in the interior of the sliding frame, the left and right sides of the top of the sliding frame both abut against the top of the top block, and the bottom end of the top block is fixedly connected to the sliding block.

[0009] Preferably, the support assembly includes a support block, the top of the support block is semicircular in design, the top of the support block contacts the bottom end of the syringe, the bottom end of the support block is inserted into the interior of the fixed seat, the fixed seat is fixedly connected to the fixed plate, the bottom end of the support block is fixedly connected to two groups of third springs, the bottom end of the third spring is fixedly connected to the inner wall of the fixed seat, the front end of the support block is fixedly connected to a slot, and the slot engages with the front end of the syringe.

[0010] Preferably, the rear end of the fixed plate is fixedly connected with two groups of side panels and a group of bottom panels, the two groups of side panels are located on the left and right sides of the bottom panel, the side panels and the bottom panel are close to the bottom end of the fixed plate, the rear ends of the side panels and the bottom panel are both provided with inclined surfaces, the top end of the bottom panel is fixedly connected with two groups of mounting columns, lifting columns are inserted into the interior of the mounting columns, multiple groups of pin holes are provided on the mounting columns and the lifting columns, a pin is inserted into the interior of one group of pin holes, the top end of the lifting column is fixedly connected with a support plate, and the top end of the support plate is designed to be arc-shaped.

[0011] Preferably, two groups of limiting columns are fixedly connected to the front end of the rotating disk, one group of limiting columns abuts against limiting blocks, two groups of limiting blocks are provided, the limiting blocks are fixedly connected to the inner wall of the protective shell, and the limiting blocks are semicircular in design.

[0012] Preferably, a long rod passes through the middle of the sliding rod and the rack, the top and bottom ends of the long rod are respectively fixedly connected to the inner wall of the sliding groove and the extension column, the extension column is fixedly connected to the bottom end of the fixed plate, the top part of the long rod is sleeved with a return spring, the return spring is in a compressed state, the top and bottom ends of the return spring are respectively fixedly connected to the inner wall of the sliding groove and the top of the sliding rod.

[0013] Preferably, three groups of guide wheels are fixedly connected to the inner wall of the protective shell, and the three groups of guide wheels are respectively located on both sides and the top of the rotating disk, and the guide wheels are in contact with the side of the rotating disk.

[0014] Preferably, two groups of mounting blocks are fixedly connected to the rear end of the fixing plate, the mounting blocks are located at the bottom end of the fixing plate, the bottom end of the mounting blocks are fixedly connected to extension blocks, and bolts are threadedly connected on the mounting blocks and the extension blocks.

[0015] Preferably, a sponge pad is fixedly connected to the bottom end of the pressing plate, and both the pressing plate and the sponge pad are arc-shaped.

[0016] The present invention is beneficial in that: 1. The present invention adopts the structural design of the pressing mechanism. While the medical staff keeps the needle tube in the extraction state, the two groups of pressing plates will approach each other to achieve the purpose of pressing, so that the patient's knee joint can be automatically pressed when the effusion is extracted, making the extraction process more convenient, and solving the knee joint effusion auxiliary extraction device in the prior art. In the process of using the needle tube for extraction, in order to facilitate the smooth extraction of the joint effusion, the medical staff will press the swollen part of the patient's knee joint towards the needle tube while extracting. Because the medical staff still needs to support the needle tube and keep the needle tube in the extraction state during the pressing process, it will be inconvenient during the operation process, and the problem of residual effusion is likely to occur.

[0017] 2. The present invention realizes the function of clamping the left and right sides of the needle and the top of the needle during the process of using a needle tube to extract the accumulated fluid through the structural design of the clamping mechanism, so that the position of the needle can be kept fixed during extraction and the needle can be prevented from tilting up, thereby eliminating the need to manually support and fix the needle, making the extraction process more convenient.

[0018] 3. The present invention realizes the function of providing support for the bottom end of the syringe during the process of using the needle tube to extract the accumulated fluid through the structural design of the support component, so that when the syringe is pulled to put the syringe into the extraction state, there is no need to hold the syringe by hand, and only the piston on the syringe needs to be pulled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a structural schematic diagram of the back end of the present invention; Figure 3 It is a schematic diagram of the connection structure of the support plate of the present invention; Figure 4 It is a structural schematic diagram of the clamping mechanism of the present invention; Figure 5 It is a schematic diagram of the connection structure of the pressing plate of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 7 It is a schematic diagram of the connection structure of the worm of the present invention; Figure 8 It is a schematic diagram of the structure inside the protective shell of the present invention; Fig. 9 It is a structural schematic diagram of the support assembly of the present invention; Fig.10 It is a schematic diagram of the connection structure of the gasket long rod of the present invention; Fig.11 It is a schematic diagram of the position structure of the rotating disk and the T-shaped block of the present invention; Fig.12 It is a schematic diagram of the connection structure of the mounting rod of the present invention.

[0021] In the figure: 1, fixed plate; 20, syringe; 21, needle; 22, moving frame; 23, trapezoidal block; 24, trapezoidal groove; 25, fixed rod; 26, connecting rod; 27, sliding rod; 28, sliding groove; 29, rack; 30, gear; 31, rotating shaft; 32, worm gear; 33, retaining frame; 34, worm; 35, rotating disk; 36, guide groove; 37, protective shell; 38, rotating block; 39, T-shaped block; 40, slider; 41, mounting rod; 42, through groove; 43, top block; 44, special-shaped rod; 45, pressing plate; 46, fixed Block; 47, guide column; 48, first spring; 49, sliding frame; 50, clamping block; 51, plug rod; 52, plug column; 53, second spring; 54, sponge pad; 55, support block; 56, slot; 57, third spring; 58, fixed seat; 59, reset spring; 61, long rod; 62, extension column; 63, limit column; 64, limit block; 65, guide wheel; 66, side plate; 67, bottom plate; 68, mounting column; 69, latch; 70, lifting column; 71, support plate; 72, mounting block; 73, extension block; 74, fixed shell. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0023] See also Figure 1 - Fig.12 As shown, an orthopedic knee joint effusion auxiliary extraction device comprises a fixing plate 1, a circular hole is opened in the middle of the fixing plate 1, a syringe 20 and a needle 21 are passed through the circular hole, a pressing mechanism is arranged at the rear end of the fixing plate 1, and the pressing mechanism is used to automatically press the patient's knee joint during the process of extracting the effusion, and clamping mechanisms are arranged on the left and right sides and the top of the needle 21, and the clamping mechanism is used to clamp and fix the needle 21 during the process of extracting the effusion, and a supporting assembly is arranged at the bottom end of the syringe 20, and the supporting assembly is used to support and fix the syringe 20, and the pressing mechanism comprises two sets of pressing plates 45, and the pressing mechanism comprises two sets of pressing plates 45. The front end of the plate 45 is fixedly connected to the special-shaped rod 44, and the front end of the special-shaped rod 44 is fixedly connected to the slider 40. The slider 40 is slidably connected to the inside of the through slot 42. The through slot 42 passes through the fixed plate 1. The inner wall of the through slot 42 is fixedly connected with a mounting rod 41. The mounting rod 41 passes through the slider 40. The front end of the slider 40 is fixedly connected with a T-shaped block 39. The T-shaped block 39 is slidably connected to the inside of the guide groove 36. The guide groove 36 is provided on the rotating disk 35. The rear end of the rotating disk 35 is fixedly connected with a rotating block 38. The rotating block 38 is rotatably connected to the fixed plate 1. The bottom end of the rotating disk 35 is provided with a transmission mechanism. Further, the transmission mechanism includes a worm wheel 32, which is rotatably connected to the fixed plate 1, and the worm wheel 32 is meshed with the bottom end portion of the rotating disk 35, and the bottom end of the worm wheel 32 is meshed with a worm 34, and the worm 34 is sleeved in the middle of the rotating shaft 31, and multiple sets of retaining frames 33 are sleeved on the left and right sides of the rotating shaft 31, and the retaining frames 33 are fixedly connected to the fixed plate 1, and the left and right sides of the rotating shaft 31 are fixedly connected with a gear 30, and the side of the gear 30 away from the rotating shaft 31 is rotatably connected to the inner wall of the fixed shell 74, and the fixed shell 74 is fixedly connected to the fixed plate 1, and the gear 30 is meshed with the rack 29, and the top of the rack 29 is fixedly connected A sliding rod 27 is connected, and the sliding rod 27 and the rack 29 are both slidably connected in the sliding groove 28. The sliding groove 28 is opened at the front end of the fixed plate 1. The front end of the sliding rod 27 is rotatably connected with a connecting rod 26. The front end of the connecting rod 26 is rotatably connected to the mobile frame 22. The rear end of the mobile frame 22 abuts against the piston inside the syringe 20. The mobile frame 22 is fixedly connected with a trapezoidal block 23. The trapezoidal block 23 is slidably connected to the trapezoidal groove 24. The trapezoidal groove 24 is opened on the fixed rod 25. The rear end of the fixed rod 25 is fixedly connected to a protective shell 37. The protective shell 37 is fixedly connected to the fixed plate 1, and the protective shell 37 is sleeved on the outer side of the rotating disk 35. Through the structural design of the pressing mechanism, while the medical staff maintains the state of extraction of the needle tube, the two groups of pressing plates 45 will approach each other to achieve the purpose of pressing, so that the patient's knee joint can be automatically pressed when extracting the effusion, making the extraction process more convenient. When working, first place the fixing plate 1 on one side of the patient's leg, and ensure that the circular hole in the middle of the fixing plate 1 is roughly aligned with the position to be punctured. At this time, the two groups of pressing plates 45 on the rear end of the fixing plate 1 will be located on both sides of the patient's knee joint. Then the needle 21 is inserted into the patient's knee joint, and finally the joint effusion is extracted by pulling the piston inside the syringe 20. At this time, ensure that the rear end of the piston inside the syringe 20 is in contact with the moving frame 22, and drive the moving frame 22 to move synchronously during the pulling process. The moving frame 22 will move forward, and the sliding of the trapezoidal block 23 in the trapezoidal groove 24 ensures that the moving frame 22 can move stably in the front and rear directions. The moving frame 22 is connected to the sliding rod 27 through the connecting rod 26, so as to pull the sliding rod 2 7 moves inside the sliding groove 28, and the sliding rod 27 is connected with the rack 29. At this time, the rack 29 will drive the gear 30 meshing with it to rotate, and the rotation of the gear 30 will drive the rotating shaft 31 to rotate. The rotating shaft 31 is ensured to be stable in the rotation process by multiple sets of retaining frames 33 set on the left and right sides. A worm 34 is set in the middle of the rotating shaft 31. When the worm 34 rotates, it will drive the worm wheel 32 meshing with it to rotate. The worm wheel 32 meshes with the bottom part of the rotating disk 35, thereby driving the rotating disk 35 to rotate. The rotating disk 35 rotates. During the process, the two groups of T-shaped blocks 39 will slide in the guide groove 36, allowing the T-shaped blocks 39 to approach each other, and the rear end of the T-shaped block 39 is connected to the slider 40, and the slider 40 slides in the through groove 42 to limit the slider 40 to move only along the left and right sides. At this time, the special-shaped rod 44 fixed at the rear end of the slider 40 will drive the pressing plate 45 to move synchronously, and the two groups of pressing plates 45 will gradually approach and press the patient's knee joint, so that the joint effusion can gather towards the needle 21 for easy extraction operation, wherein the worm gear The self-locking of 32 and the worm 34 can ensure that the pressing plate 45 can move normally only when operated by medical staff, and the pressing plate 45 cannot be pushed by external force to drive the pressing plate 45 to move, thereby improving the safety of the pressing plate 45 when pressing the patient's knee joint, and avoiding excessive squeezing of the patient by the pressing plate 45 due to accidental contact with the pressing plate 45. The rotating disk 35 is rotatably connected to the fixed plate 1 through the rotating block 38. The cross-section of the rotating block 38 is designed to be T-shaped, and a slot corresponding to the rotating block 38 is opened at the front end of the fixed plate 1.

[0024] Furthermore, the clamping mechanism includes three groups of clamping blocks 50, and the clamping blocks 50 are all in contact with the needle 21. The clamping blocks 50 are located on the left and right sides of the syringe 20 and the top of the syringe 20. The clamping blocks 50 on both sides are fixedly connected with a plug rod 51, and the plug rod 51 is inserted in the inside of the plug column 52. The plug column 52 is fixedly connected to the slider 40, and the plug rod 51 is fixedly connected to the second spring 53. The second spring 53 is inserted in the inside of the plug column 52, and the second spring 53 is fixedly connected to the inner wall of the plug column 52. The holding block 50 is fixedly connected to the sliding frame 49, the top of the sliding frame 49 is fixedly connected to the first spring 48, the first spring 48 is in a stretched state, the top of the first spring 48 is fixedly connected to the fixed block 46, the fixed block 46 is fixedly connected to the fixed plate 1, the bottom of the fixed block 46 is fixedly connected to two groups of guide columns 47, the guide columns 47 are inserted into the inside of the sliding frame 49, the left and right sides of the top of the sliding frame 49 are both in contact with the top of the top block 43, and the bottom of the top block 43 is fixedly connected to the slider 40; Through the structural design of the clamping mechanism, the function of clamping the left and right sides of the needle 21 and the top of the needle 21 is realized in the process of using the needle tube to extract the effusion, so that the position of the needle 21 can be kept fixed during extraction, and the needle 21 is prevented from tilting up, so that there is no need to manually support and fix the needle 21, making the extraction process more convenient. When working, when the slider 40 slides in the through groove 42, the plug post 52 fixed on the slider 40 will gradually approach the needle 21, and the plug post A second spring 53 and an insertion rod 51 are inserted inside 52, and the insertion rod 51 is driven to approach the needle 21 until the clamping block 50 fixed on the insertion rod 51 contacts the needle 21. At this time, when the insertion column 52 continues to move, the second spring 53 will be compressed, and the fixed clamping block 50 on the insertion rod 51 will continue to squeeze the needle 21. The clamping block 50 fixed on the insertion rod 51 is used to clamp and fix the left and right sides of the needle 21 to ensure that the position of the needle 21 will not shift. When the sliders 40 are approaching each other, The top block 43 fixed on the top of the slider 40 will abut against the bottom of the sliding frame 49 and push the sliding frame 49 to move downward, and the first spring 48 fixed on the sliding frame 49 will be gradually stretched until the clamping block 50 fixed at the bottom of the sliding frame 49 also contacts the top of the needle 21. The clamping block 50 fixed at the bottom of the sliding frame 49 can prevent the needle 21 from tilting upward during the extraction process. Similarly, when the sliders 40 move away from each other, the clamping block 50 can still clamp the needle 21 under the action of the second spring 53. The clamping block 50 is clamped until the second spring 53 is no longer compressed. At this time, the plug 52 will drive the clamping block 50 away from the needle 21, and the top of the sliding frame 49 will also move upward under the action of the first spring 48, so that the clamping block 50 fixed at the bottom of the sliding frame 49 is no longer in contact with the needle 21, and two groups of guide columns 47 are fixed on the bottom of the fixed block 46. The guide columns 47 are inserted into the interior of the sliding frame 49 to limit the moving direction of the sliding frame 49, thereby ensuring that the sliding frame 49 can move stably in the vertical direction.

[0025] Further, the support assembly includes a support block 55, the top of which is semicircular in design, the top of which contacts the bottom of the syringe 20, the bottom of which is inserted into a fixed seat 58, the fixed seat 58 is fixedly connected to the fixed plate 1, the bottom of which is fixedly connected to two groups of third springs 57, the bottom of which is fixedly connected to the inner wall of the fixed seat 58, the front end of which is fixedly connected to a slot 56, the slot 56 engages with the front end of the syringe 20; Through the structural design of the support component, the function of providing support for the bottom end of the syringe 20 is achieved in the process of using the needle tube to extract the effusion, so that when the syringe 20 is pulled to put the syringe in the extraction state, there is no need to hold the syringe 20 by hand, and only the piston on the syringe 20 needs to be pulled. During operation, before the needle 21 is inserted into the patient's knee joint, by pressing the support block 55 downward, the third spring 57 fixed at the bottom end of the support block 55 will be compressed, and the bottom end of the support block 55 will move downward inside the fixing seat 58. At this time, the needle 21 can be smoothly aligned with the circular hole opened in the middle of the fixing plate 1. After the needle 21 is inserted into the patient's knee joint, the support block 55 is no longer pressed at this time. The support block 55 will be reset under the action of the third spring 57, thereby supporting the bottom end of the syringe 20, and the slot 56 fixed at the front end of the support block 55 will also be engaged with the front end of the syringe 20, thereby fixing the syringe 20. At this time, when performing the extraction operation, it is only necessary to pull the piston inside the syringe 20.

[0026] Further, the rear end of the fixed plate 1 is fixedly connected with two groups of side plates 66 and a group of bottom plates 67, the two groups of side plates 66 are located on the left and right sides of the bottom plate 67, the side plates 66 and the bottom plate 67 are close to the bottom end of the fixed plate 1, the rear ends of the side plates 66 and the bottom plate 67 are provided with inclined surfaces, the top end of the bottom plate 67 is fixedly connected with two groups of mounting columns 68, the interior of the mounting columns 68 is inserted with lifting columns 70, the mounting columns 68 and the lifting columns 70 are provided with multiple groups of pin holes, the interior of one group of pin holes is inserted with a latch 69, the top end of the lifting column 70 is fixedly connected with a support plate 71, the top end of the support plate 71 is designed in an arc shape; During operation, the rear ends of the side plates 66 and the bottom plate 67 are both provided with inclined surfaces so as to enable smooth passage through the patient's legs. Since some patients with knee joint effusion have difficulty in bending and stretching their knee joints, or the angles at which they can bend and stretch are small, the bottom end of the patient's knee joint can be supported by the support plate 71. Two groups of lifting columns 70 are fixed to the bottom end of the support plate 71. Pins 69 are inserted into the mounting columns 68 and the lifting columns 70. The position height of the support plate 71 can be adjusted by pulling out the pins 69.

[0027] Furthermore, two groups of limiting columns 63 are fixedly connected to the front end of the rotating disk 35, one group of limiting columns 63 abuts against limiting blocks 64, two groups of limiting blocks 64 are provided, and the limiting blocks 64 are fixedly connected to the inner wall of the protective shell 37, and the limiting blocks 64 are semicircular in design; During operation, the limit column 63 is fixed on the rotating disk 35, and the limit block 64 is fixed on the inner wall of the protective shell 37. When the rotating disk 35 rotates to the maximum angle, the limit column 63 will abut against one set of limit blocks 64, thereby preventing the rotating disk 35 from continuing to rotate, causing wear between the T-shaped block 39 and the guide groove 36 and between the inner wall of the through groove 42 and the slider 40 due to excessive extrusion.

[0028] Furthermore, a long rod 61 is passed through the middle of the sliding rod 27 and the rack 29, and the top and bottom ends of the long rod 61 are respectively fixedly connected to the inner wall of the sliding groove 28 and the extension column 62, and the extension column 62 is fixedly connected to the bottom end of the fixed plate 1. The top part of the long rod 61 is sleeved with a return spring 59, and the return spring 59 is in a compressed state. The top and bottom ends of the return spring 59 are respectively fixedly connected to the inner wall of the sliding groove 28 and the top of the sliding rod 27; During operation, the long rod 61 passes through the sliding rod 27 and the rack 29 to guide the movement of the sliding rod 27 and the rack 29, and a return spring 59 is sleeved on the top of the long rod 61. When the sliding rod 27 moves upward, the return spring 59 will be compressed, so that when the moving frame 22 is not pulled, the moving frame 22 can be moved back to its original position under the action of the return spring 59. The extension column 62 is fixed to the bottom end of the fixed plate 1 to support the bottom end of the long rod 61 and the rack 29 to prevent the rack 29 from detaching from the gear 30.

[0029] Furthermore, three sets of guide wheels 65 are fixedly connected to the inner wall of the protective shell 37, and the three sets of guide wheels 65 are respectively located on both sides and the top of the rotating disk 35, and the guide wheels 65 are in contact with the side of the rotating disk 35; During operation, the three sets of guide wheels 65 are in contact with the rotating disk 35 so as to support the side of the rotating disk 35 during the rotation of the rotating disk 35, thereby making the rotation of the rotating disk 35 more stable and less prone to shaking. Embodiment 2

[0030] See also Figure 4 and Fig.12 As shown, comparative example 1 is another embodiment of the present invention, the rear end of the fixing plate 1 is fixedly connected with two sets of mounting blocks 72, the mounting blocks 72 are located at the bottom end of the fixing plate 1, the bottom end of the mounting blocks 72 is fixedly connected with extension blocks 73, and bolts are threadedly connected on the mounting blocks 72 and the extension blocks 73; During operation, since most patients lie flat on the bed during the process of extracting fluid from the patient's knee joint, after the fixing plate 1 is close to one side of the patient's knee joint, the bolt on the mounting block 72 can be continuously rotated to fix the bottom end of the fixing plate 1 to the bottom end of the bed, thereby facilitating the fixation of the fixing plate 1. An extension block 73 is fixed to the bottom end of the mounting block 72. The extension block 73 is used to extend the threaded connection length between the mounting block 72 and the bolt, so that the fixing effect of the bolt is better.

[0031] The bottom end of the pressing plate 45 is fixedly connected with a sponge pad 54, and both the pressing plate 45 and the sponge pad 54 are designed to be arc-shaped; During operation, the sponge pad 54 can reduce the discomfort caused by the pressing plate 45 to the patient during the pressing process of the pressing plate 45 , and both the pressing plate 45 and the sponge pad 54 are designed to be arc-shaped so as to better fit the patient's knee joint.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An orthopedic knee joint effusion auxiliary extraction device, comprising a fixing plate (1), a circular hole is opened in the middle of the fixing plate (1), a syringe (20) and a needle (21) penetrate the circular hole, and the characteristics are: A pressing mechanism is provided at the rear end of the fixing plate (1), and the pressing mechanism is used to automatically press the patient's knee joint during the process of extracting the effusion. Clamping mechanisms are provided on both the left and right sides and the top end of the needle (21), and the clamping mechanism is used to clamp and fix the needle (21) during the process of extracting the effusion. A supporting assembly is provided at the bottom end of the syringe (20), and the supporting assembly is used to support and fix the syringe (20). The pressing mechanism includes two groups of pressing plates (45), and the front end of the pressing plate (45) is fixedly connected to the special-shaped rod (44), and the front end of the special-shaped rod (44) is fixedly connected to the slider (40). The slider (40) is slidably connected to the interior of the through groove (42), the through groove (42) passes through the fixed plate (1), the inner wall of the through groove (42) is fixedly connected to a mounting rod (41), the mounting rod (41) passes through the slider (40), the front end of the slider (40) is fixedly connected to a T-shaped block (39), the T-shaped block (39) is slidably connected to the interior of the guide groove (36), the guide groove (36) is provided on the rotating disk (35), the rear end of the rotating disk (35) is fixedly connected to a rotating block (38), the rotating block (38) is rotatably connected to the fixed plate (1), and the bottom end of the rotating disk (35) is provided with a transmission mechanism.

2. The orthopedic knee joint effusion auxiliary extraction device according to claim 1, characterized in that: The transmission mechanism comprises a worm wheel (32), the worm wheel (32) being rotatably connected to the fixed plate (1), the worm wheel (32) being meshed with the bottom end portion of the rotating disk (35), the bottom end of the worm wheel (32) being meshed with a worm (34), the worm (34) being sleeved on the middle portion of the rotating shaft (31), a plurality of sets of retaining frames (33) being sleeved on the left and right sides of the rotating shaft (31), the retaining frames (33) being fixedly connected to the fixed plate (1), the left and right sides of the rotating shaft (31) being fixedly connected with a gear (30), the side of the gear (30) away from the rotating shaft (31) being rotatably connected to the inner wall of a fixed shell (74), the fixed shell (74) being fixedly connected to the fixed plate (1), the gear (30) being meshed with a rack (29), the top end of the rack (29) being fixedly connected with a sliding The movable rod (27) is provided with a sliding rod (27) and a rack (29) which are both slidably connected in a sliding groove (28). The sliding groove (28) is provided at the front end of the fixed plate (1). The front end of the sliding rod (27) is rotatably connected to a connecting rod (26). The front end of the connecting rod (26) is rotatably connected to a movable frame (22). The rear end of the movable frame (22) abuts against a piston inside a syringe (20). The movable frame (22) is fixedly connected with a trapezoidal block (23). The trapezoidal block (23) is slidably connected to a trapezoidal groove (24). The trapezoidal groove (24) is provided on a fixed rod (25). The rear end of the fixed rod (25) is fixedly connected to a protective shell (37). The protective shell (37) is fixedly connected to the fixed plate (1). The protective shell (37) is sleeved on the outer side of the rotating disk (35).

3. The orthopedic knee joint effusion auxiliary extraction device according to claim 1, characterized in that: The clamping mechanism comprises three groups of clamping blocks (50), each of which is in contact with the needle (21). The clamping blocks (50) are located on the left and right sides of the syringe (20) and the top of the syringe (20). The clamping blocks (50) on both sides are fixedly connected with an insertion rod (51), and the insertion rod (51) is inserted into the inside of the insertion column (52). The insertion column (52) is fixedly connected to the slider (40). The insertion rod (51) is fixedly connected to the second spring (53), and the second spring (53) is inserted into the inside of the insertion column (52). The second spring (53) is fixedly connected to the inner wall of the insertion column (52). The clamping block (50) on the top The block (50) is fixedly connected to the sliding frame (49); the top end of the sliding frame (49) is fixedly connected to a first spring (48), the first spring (48) is in a stretched state, the top end of the first spring (48) is fixedly connected to the fixed block (46), the fixed block (46) is fixedly connected to the fixed plate (1), the bottom end of the fixed block (46) is fixedly connected to two groups of guide columns (47), the guide columns (47) are inserted into the interior of the sliding frame (49), the left and right sides of the top end of the sliding frame (49) are both in contact with the top end of the top block (43), and the bottom end of the top block (43) is fixedly connected to the sliding block (40).

4. The orthopedic knee joint effusion auxiliary extraction device according to claim 1, characterized in that: The support assembly comprises a support block (55), the top end of the support block (55) is designed to be semicircular, the top end of the support block (55) contacts the bottom end of the syringe (20), the bottom end of the support block (55) is inserted into the interior of a fixing seat (58), the fixing seat (58) is fixedly connected to the fixing plate (1), the bottom end of the support block (55) is fixedly connected to two groups of third springs (57), the bottom end of the third spring (57) is fixedly connected to the inner wall of the fixing seat (58), and the front end of the support block (55) is fixedly connected to a slot (56), and the slot (56) is engaged with the front end of the syringe (20).

5. The orthopedic knee joint effusion auxiliary extraction device according to claim 4, characterized in that: The rear end of the fixed plate (1) is fixedly connected to two groups of side plates (66) and a group of bottom plates (67), the two groups of side plates (66) are located on the left and right sides of the bottom plate (67), the side plates (66) and the bottom plate (67) are close to the bottom end of the fixed plate (1), the rear ends of the side plates (66) and the bottom plate (67) are both provided with inclined surfaces, the top end of the bottom plate (67) is fixedly connected to two groups of mounting columns (68), the interior of the mounting columns (68) is provided with a lifting column (70), the mounting columns (68) and the lifting columns (70) are both provided with a plurality of groups of pin holes, the interior of one group of pin holes is provided with a latch (69), the top end of the lifting column (70) is fixedly connected to a support plate (71), the top end of the support plate (71) is designed to be arc-shaped.

6. The orthopedic knee joint effusion auxiliary extraction device according to claim 2, characterized in that: Two groups of limiting columns (63) are fixedly connected to the front end of the rotating disk (35), one group of limiting columns (63) abuts against a limiting block (64), two groups of limiting blocks (64) are provided, the limiting blocks (64) are fixedly connected to the inner wall of the protective shell (37), and the limiting blocks (64) are semicircular in design.

7. The orthopedic knee joint effusion auxiliary extraction device according to claim 2, characterized in that: A long rod (61) passes through the middle of the sliding rod (27) and the rack (29); the top and bottom ends of the long rod (61) are respectively fixedly connected to the inner wall of the sliding groove (28) and the extension column (62); the extension column (62) is fixedly connected to the bottom end of the fixed plate (1); the top portion of the long rod (61) is sleeved with a return spring (59); the return spring (59) is in a compressed state; the top and bottom ends of the return spring (59) are respectively fixedly connected to the inner wall of the sliding groove (28) and the top of the sliding rod (27).

8. The orthopedic knee joint effusion auxiliary extraction device according to claim 6, characterized in that: Three groups of guide wheels (65) are fixedly connected to the inner wall of the protective shell (37), and the three groups of guide wheels (65) are respectively located on both sides and the top end of the rotating disk (35), and the guide wheels (65) are in contact with the side of the rotating disk (35).

9. The orthopedic knee joint effusion auxiliary extraction device according to claim 7, characterized in that: Two groups of mounting blocks (72) are fixedly connected to the rear end of the fixing plate (1); the mounting blocks (72) are located at the bottom end of the fixing plate (1); the bottom ends of the mounting blocks (72) are fixedly connected to extension blocks (73); bolts are threadedly connected to the mounting blocks (72) and the extension blocks (73).

10. The orthopedic knee joint effusion auxiliary extraction device according to claim 1, characterized in that: The bottom end of the pressing plate (45) is fixedly connected to a sponge pad (54), and both the pressing plate (45) and the sponge pad (54) are designed to be arc-shaped.

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