PRP injection device for knee joint pain treatment

Abstract

The invention aims at providing a PRP injection device for knee joint pain treatment, and relates to the technical field of medical instruments. A gear set is rotated through a rotating disc to drive a lead screw to rotate, a sliding plate is driven to slide on a base, and the distance from the joint of the sliding plate and a supporting plate to a U-shaped frame is changed, so that the supporting plate rotates to change the angle under the action of the U-shaped frame; therefore, the angle of the support plate is changed according to the bending angle of the knee joint while moving the support plate back and forth along with the shank; the arc-shaped rod is slidably arranged on the supporting plate, the multiple injection assemblies are slidably arranged on the arc-shaped rod, a plurality of injectors can be fixed, and the positions and angles of the injectors in the fixing cylinder can be adjusted by sliding the injection assemblies, rotating the rotating sleeves of the injection assemblies, stretching out and drawing back of the telescopic rod and rotating of the sliding base; the function of directional navigation of the injectors is achieved at the same time, a doctor can puncture the knee joint more accurately, and the time for finding the position angle in each time of puncture injection is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a PRP injection device for treating knee joint pain. Background Art

[0002] PRP treatment refers to platelet-rich plasma treatment, which can be used to treat discomfort such as knee joint pain caused by diseases such as osteoarthritis and osteonecrosis of the femoral head. PRP treatment involves extracting one's own blood and through a series of operations such as centrifugation, making it into a high-concentration plasma rich in platelets, and then injecting it by a doctor into painful areas such as the knee joint. Because platelet-rich plasma contains abundant cytokines, growth factors, etc., it has a certain therapeutic effect on diseases such as bone defect, nonunion, osteoarthritis, and chondropathy, and can also be used to treat discomfort such as knee joint swelling and pain caused by diseases such as osteoarthritis and osteonecrosis of the femoral head. In addition, the continuously released growth factors of PRP can stimulate the synthesis and metabolism of glycosaminoglycans in the cartilage matrix, and can promote the repair of articular cartilage by promoting the cartilage matrix. The wound surface of PRP treatment is relatively small, and may only leave a wound the size of a needle eye locally, with relatively few adverse reactions and side effects, and does not require a long recovery period.

[0003] Currently, when injecting PRP into the knee joint, the patient needs to lie on the bed with the knee joint bent and lifted up to a certain height. The higher the knee joint is bent and lifted up, the more the patient's calf retracts backward along with the knee joint. On the contrary, the flatter the knee joint is placed downward, the more the patient's calf extends forward along with the knee joint;

[0004] Although existing lower limb support devices can adjust the angle and height to adjust the position of the knee joint, the adjustment is only through simple angle adjustment. It is necessary to adjust the angle in advance to support the knee joint and the leg, and cannot move forward and backward along with the calf while adjusting the angle, resulting in poor support comfort. And if you want to improve comfort, you need to move the entire support device or move the patient's body position, which is cumbersome to operate and increases the workload of doctors; currently, when injecting PRP into the knee joint, multiple positions of the knee joint need to be injected, and different angles are required for injection. It is not easy for novices to find the right angle, which affects the effect of PRP injection treatment. And when injecting at multiple positions, each injection requires time to align the injection position, which consumes time and affects the effect of PRP injection treatment. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides the following technical solutions:

[0006] A PRP injection device for treating knee joint pain, comprising a base and a support plate. A sliding plate is slidably mounted on the base. One end of the support plate is rotatably connected to the sliding plate, and a U-shaped frame is arranged between the support plate and the sliding plate. The U-shaped frame is fixedly mounted on the base and abuts against the bottom of the support plate. By sliding the sliding plate, the distance from the connection point between the sliding plate and the support plate to the U-shaped frame is changed, so that the support plate rotates under the action of the U-shaped frame, thereby adjusting the position and angle of the support plate.

[0007] An arc-shaped rod is slidably arranged on the support plate, and a plurality of injection components are slidably arranged on the arc-shaped rod.

[0008] Furthermore, the injection component includes a fixed cylinder, a sliding seat, a telescopic rod, a rotating sleeve and a short column. The short column is slidably sleeved on the arc-shaped rod and slides along the arc-shaped rod. The rotating sleeve is rotatably sleeved outside the short column. The tail end of the telescopic rod is fixedly connected to the rotating sleeve, and the front end of the telescopic rod is rotatably connected to the sliding seat. The fixed cylinder is slidably mounted on the sliding seat.

[0009] Furthermore, a short board extends out of the short column, and a bolt is threadedly mounted on the short board. By tightening the bolt to contact the arc-shaped rod, the sliding of the short column is restricted. A bolt is threadedly mounted on the rotating sleeve. By tightening the bolt to contact the short column, the rotation of the rotating sleeve is restricted. A bolt is arranged on the telescopic rod to restrict the telescoping, and a bolt is arranged at the rotating connection between the telescopic rod and the sliding seat to restrict the rotation.

[0010] Furthermore, a fixed slider is fixedly arranged on the fixed cylinder. The fixed slider slides along the sliding seat, and a bolt is arranged on the fixed slider. By tightening the bolt to contact the sliding seat, the sliding of the fixed cylinder is restricted. A bolt is threadedly mounted on the outer wall of the fixed cylinder.

[0011] Furthermore, a sliding groove is opened on the base, a lead screw is rotatably mounted in the sliding groove, a sliding plate slider is fixedly arranged below the sliding plate, and the sliding plate slider is threadedly sleeved on the lead screw. An installation seat is fixedly arranged at the front end of the base. A gear set is arranged in the installation seat, and a turntable is rotatably mounted on the installation seat. By rotating the turntable to drive the gear set to rotate, the lead screw is driven to rotate, driving the sliding plate slider to slide along the sliding groove, thereby driving the sliding plate to slide.

[0012] Furthermore, the gear set is composed of two spur gears meshing with each other up and down. The two spur gears are rotatably mounted in the installation seat. One of the spur gears is fixedly connected to the lead screw, and the other spur gear is fixedly connected to the turntable.

[0013] Furthermore, a side groove is opened on one side of the support plate, a connecting block is slidably arranged in the side groove, and a bolt is arranged on the connecting block to restrict the sliding of the connecting block. One end of the arc-shaped rod is rotatably connected to the connecting block, and a bolt is arranged at the rotating connection to restrict the rotation of the arc-shaped rod.

[0014] Further, a plurality of restraint straps are provided on the support plate.

[0015] Further, both ends of the U-shaped frame are fixedly connected to the base. The sliding plate slides through the U-shaped frame, and the middle part of the U-shaped frame is a structure that can be telescopically extended and retracted vertically.

[0016] Further, the support plate is a telescopic structure.

[0017] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0018] 1. In the present invention, a sliding plate is slidably arranged on the base, and the support plate for supporting the patient's calf is rotatably installed on the sliding plate. A U-shaped frame is arranged between the sliding plate and the support plate to abut against the support plate. By rotating the turntable to drive the gear set to drive the lead screw to rotate, the sliding plate is driven to slide on the base, changing the distance from the connection between the sliding plate and the support plate to the U-shaped frame, so that the support plate rotates under the action of the U-shaped frame to change the angle, thereby realizing moving the support plate back and forth following the calf while changing the angle of the support plate according to the bending angle of the knee joint. Through the telescopic movement of the middle part of the U-shaped frame and the telescopic movement of the support plate, the angle of the support plate when it is propped up in the initial state and the length of the support plate can be adjusted according to the patient's leg length, so that the ratio of the moving distance of the support plate to the rotation angle of the support plate can be changed according to the patient's body type, better adapting to different patient body types, and solving the problem that the existing lower limb support device cannot move forward and backward following the calf while adjusting the angle, resulting in poor support comfort. If the comfort is to be improved, the entire support device needs to be moved, or the patient's body position needs to be moved, which is cumbersome to operate and increases the workload of doctors.

[0019] 2. In the present invention, an arc-shaped rod is slidably arranged on the support plate, and a plurality of injection assemblies are slidably arranged on the arc-shaped rod. A plurality of syringes can be fixed. By sliding the injection assembly, rotating the rotating sleeve of the injection assembly, telescoping the telescopic rod, and rotating the sliding seat, the position and angle of the syringe in the fixed cylinder can be adjusted. By sliding the fixed cylinder along the sliding seat, puncture can be achieved, playing a role of simultaneously guiding the orientation of a plurality of syringes, facilitating doctors to puncture the knee joint more precisely, and shortening the time for finding the position and angle during each puncture injection by simultaneously guiding the orientation of a plurality of syringes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structure schematic diagram of the left side of the present invention;

[0021] Figure 2 is a three-dimensional structure schematic diagram of the right side of the present invention;

[0022] Figure 3 is a sectional structure schematic diagram of the base of the present invention;

[0023] Figure 4This is a schematic structural diagram of the injection component of the present invention.

[0024] In the figure: base - 1, sliding groove - 101, mounting seat - 102, sliding plate - 2, sliding plate slider - 201, U-shaped frame - 3, support plate - 4, side groove - 401, restraint belt - 5, arc rod - 6, injection component - 7, fixed cylinder - 701, fixed slider - 7011, sliding seat - 702, telescopic rod - 703, rotating sleeve - 704, short column - 705, connecting block - 8, turntable - 9, lead screw - 10, gear set - 11. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1:

[0027] Please refer to Figures 1-4 , a PRP injection device for treating knee joint pain includes a base 1 and a support plate 4. The sliding plate 2 is slidably mounted on the base 1. One end of the support plate 4 is rotatably connected to the sliding plate 2, and a U-shaped frame 3 is provided between the support plate 4 and the sliding plate 2. The U-shaped frame 3 is fixedly mounted on the base 1, and the bottom of the U-shaped frame 3 abuts against the support plate 4. By sliding the sliding plate 2, the distance from the connection between the sliding plate 2 and the support plate 4 to the U-shaped frame 3 is changed, so that the support plate 4 rotates under the action of the U-shaped frame 3, thereby adjusting the position and angle of the support plate 4;

[0028] In this embodiment, a sliding groove 101 is opened on the base 1, and a lead screw 10 is rotatably mounted in the sliding groove 101. A sliding plate slider 201 is fixedly provided below the sliding plate 2, and the sliding plate slider 201 is threadedly sleeved on the lead screw 10. An installation seat 102 is fixedly provided at the front end of the base 1, a gear set 11 is provided in the installation seat 102, and a turntable 9 is rotatably mounted on the installation seat 102. By rotating the turntable 9, the gear set 11 is driven to rotate, driving the lead screw 10 to rotate, driving the sliding plate slider 201 to slide along the sliding groove 101, thereby driving the sliding plate 2 to slide. The gear set 11 is composed of two spur gears meshing up and down. The two spur gears are rotatably mounted in the installation seat 102. One of the spur gears is fixedly connected to the lead screw 10, and the other spur gear is fixedly connected to the turntable 9;

[0029] In this embodiment, a sliding plate 2 is slidably arranged on a base 1, and a support plate 4 for supporting a patient's calf is rotatably installed on the sliding plate 2. A U-shaped frame 3 is arranged between the sliding plate 2 and the support plate 4 to abut against the support plate 4. A gear set 11 is driven to rotate by a turntable 9 to drive a lead screw 10 to rotate, so as to drive the sliding plate 2 to slide on the base 1, change the distance from the connection part of the sliding plate 2 and the support plate 4 to the U-shaped frame 3, and enable the support plate 4 to rotate under the action of the U-shaped frame 3 to change the angle. Thus, while the support plate 4 follows the forward and backward movement of the calf, the angle of the support plate 4 is changed according to the bending angle of the knee joint, solving the problem that the existing lower limb support device cannot move forward and backward following the calf while adjusting the angle, resulting in poor support comfort. If the comfort is to be improved, the entire support device needs to be moved, or the patient's body position needs to be moved, which is cumbersome to operate and increases the workload of doctors.

[0030] Embodiment 2:

[0031] Please refer to Figures 1-4 , according to Embodiment 1, an arc-shaped rod 6 is slidably arranged on the support plate 4, and a plurality of injection components 7 are slidably arranged on the arc-shaped rod 6. The injection component 7 includes a fixed cylinder 701, a sliding seat 702, a telescopic rod 703, a rotating sleeve 704 and a short column 705. The short column 705 is slidably sleeved on the arc-shaped rod 6 and slides along the arc-shaped rod 6. The rotating sleeve 704 is rotatably sleeved outside the short column 705. The tail end of the telescopic rod 703 is fixedly connected to the rotating sleeve 704, and the front end of the telescopic rod 703 is rotatably connected to the sliding seat 702. The fixed cylinder 701 is slidably installed on the sliding seat 702. A plurality of restraint belts 5 are arranged on the support plate 4, and the patient's calf can be fixed on the support plate 4;

[0032] In this embodiment, a short board extends out of the short column 705, and a bolt is threadedly installed on the short board. By tightening the bolt to contact the arc-shaped rod 6, the sliding of the short column 705 is restricted. A bolt is threadedly installed on the rotating sleeve 704. By tightening the bolt to contact the short column 705, the rotation of the rotating sleeve 704 is restricted. The telescopic rod 703 is restricted in extension by setting a bolt. A bolt is arranged at the rotational connection between the telescopic rod 703 and the sliding seat 702 to restrict rotation. A fixed slider 7011 is fixedly arranged on the fixed cylinder 701. The fixed slider 7011 slides along the sliding seat 702, and a bolt is arranged on the fixed slider 7011. By tightening the bolt to contact the sliding seat 702, the sliding of the fixed cylinder 701 is restricted. A bolt is threadedly installed on the outer wall of the fixed cylinder 701. A side groove 401 is opened on one side of the support plate 4. A connecting block 8 is slidably arranged in the side groove, and a bolt is arranged on the connecting block 8 to restrict the sliding of the connecting block 8. One end of the arc-shaped rod 6 is rotatably connected to the connecting block 8, and a bolt is arranged at the rotational connection to restrict the rotation of the arc-shaped rod 6;

[0033] In this embodiment, an arc-shaped rod 6 is slidably arranged on the support plate 4, and a plurality of injection assemblies 7 are slidably arranged on the arc-shaped rod 6. A plurality of syringes can be fixed. By sliding the injection assembly 7, rotating the rotating sleeve 704 of the injection assembly 7, telescoping the telescopic rod 703, and rotating the sliding seat 702, the position and angle of the syringe in the fixed cylinder 701 can be adjusted. Puncturing can be achieved by sliding the fixed cylinder 701 along the sliding seat 702, which plays a role in simultaneously performing directional navigation on a plurality of syringes, facilitating more accurate puncture of the knee joint by the doctor. And by simultaneously performing directional navigation on a plurality of syringes, the time for finding the position and angle during each puncture injection is shortened.

[0034] Embodiment 3:

[0035] Please refer to Figures 1-4 , according to Embodiments 1-2, both ends of the U-shaped frame 3 are fixedly connected to the base 1, the sliding plate 2 slidably passes through the U-shaped frame 3, the middle part of the U-shaped frame 3 is a structure that can be telescopically extended and retracted up and down, and the support plate 4 is a telescopic structure;

[0036] In this embodiment, by telescoping the middle part of the U-shaped frame 3 and the telescoping of the support plate 4, the angle of the support plate 4 when propped up in the initial state and the length of the support plate 4 can be adjusted according to the leg length of the patient, so that the ratio of the distance of moving the support plate 4 to the rotation angle of the support plate 4 can be changed according to the body type of the patient, better adapting to the body types of different patients.

[0037] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art in the technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A PRP injection device for treating knee pain, comprising a base and a support plate, characterized in that: The slide plate is slidably mounted on the base, one end of the support plate is rotatably connected to the slide plate, and a U-shaped frame is arranged between the support plate and the slide plate, the U-shaped frame is fixedly mounted on the base, the U-shaped frame abuts against the bottom of the support plate, and the distance from the connection between the slide plate and the support plate to the U-shaped frame is changed by sliding the slide plate, so that the support plate is rotated by the action of the U-shaped frame, thereby adjusting the position and angle of the support plate; An arc-shaped rod is slidably arranged on the support plate, and a plurality of injection assemblies are slidably arranged on the arc-shaped rod.

2. A PRP injection device for treating knee pain according to claim 1, characterized in that: The injection assembly includes a fixed cylinder, a sliding seat, a telescopic rod, a rotating sleeve and a short column. The short column is slidably sleeved on the arc rod and slides along the arc rod. The rotating sleeve is rotatably sleeved outside the short column. The tail end of the telescopic rod is fixedly connected to the rotating sleeve, and the front end of the telescopic rod is rotatably connected to the sliding seat. The fixed cylinder is slidably installed on the sliding seat.

3. A PRP injection device for treating knee pain according to claim 2, characterized in that: A short plate extends out of the short column, and a threaded mounting bolt is arranged on the short plate. By tightening the bolt, the bolt contacts the arc rod to limit the sliding of the short column. A threaded mounting bolt is arranged on the rotating sleeve. By tightening the bolt, the bolt contacts the short column to limit the rotation of the rotating sleeve. The telescopic rod is provided with a bolt to limit the telescopic movement, and a bolt is arranged at the rotation connection between the telescopic rod and the sliding seat to limit the rotation.

4. A PRP injection device for treating knee pain according to claim 2, characterized in that: A fixed slide block is fixedly arranged on the fixed cylinder, and the fixed slide block slides along the sliding seat. A bolt is arranged on the fixed slide block, and the bolt is contacted with the sliding seat by tightening the bolt to limit the sliding of the fixed cylinder. The outer wall of the fixed cylinder is threaded with the bolt.

5. A PRP injection device for treating knee pain according to claim 1, characterized in that: A sliding groove is provided on the base, and a screw rod is rotatably installed in the sliding groove. A skateboard slider is fixedly arranged under the skateboard, and the skateboard slider is threadedly sleeved on the screw rod. A mounting seat is fixedly arranged at the front end of the base, and a gear set is arranged in the mounting seat. A turntable is rotatably installed on the mounting seat, and the gear set is driven to rotate by rotating the turntable, driving the screw rod to rotate, driving the skateboard slider to slide along the sliding groove, thereby driving the skateboard to slide.

6. A PRP injection device for treating knee pain according to claim 1, characterized in that: The gear set is composed of two spur gears meshing up and down. The two spur gears are rotatably mounted in a mounting seat, one of the spur gears is fixedly connected to the lead screw, and the other spur gear is fixedly connected to the turntable.

7. A PRP injection device for treating knee pain according to claim 1, characterized in that: A side groove is provided on one side of the support plate, a connecting block is slidably arranged in the side groove, and a bolt is arranged on the connecting block to limit the sliding of the connecting block, one end of the arc rod is rotatably connected to the connecting block, and a bolt is arranged at the rotation connection to limit the rotation of the arc rod, and a plurality of constraint belts are arranged on the support plate.

8. A PRP injection device for treating knee pain according to claim 1, characterized in that: The two ends of the U-shaped frame are fixedly connected to the base, the slide plate slides through the U-shaped frame, and the middle part of the U-shaped frame is a structure that can be telescoped up and down.

9. A PRP injection device for treating knee pain according to claim 1, characterized in that: The support plate is a telescopic structure.

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