Arthroscopic knee patella dislocation anterior and posterior cruciate ligament reconstruction and auxiliary stress device

Abstract

The invention belongs to the technical field of medical instruments, and discloses an arthroscopic knee patella dislocation anterior and posterior cruciate ligament reconstruction and auxiliary stress device which comprises four supports, the upper ends of the supports are connected with top steel needles through buckles, and the lower ends of the supports are connected with bottom steel needles through buckles; a gear device is connected to the lower portion of the bottom steel needle, four elastic devices are connected to a gear in a buckled mode, and the tail ends of the elastic devices are locked to the thighbone end and the tibia end through specific steel nails. The device is convenient to wear through the bracket with the buckle, and is convenient to fix through the elastic device; the fixing strength is conveniently adjusted through the gear; the device is simple in structure, convenient to wear, light in weight and labor-saving.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an arthroscopic anterior and posterior cruciate ligament reconstruction and auxiliary stress device for knee patellar dislocation. Background Art

[0002] Congenital patellar dysplasia is a bone problem caused by congenital developmental abnormalities, mainly involving abnormalities in the morphology, structure and function of the patella. Congenital patellar dysplasia refers to abnormalities in the morphology, structure or function of the patella that exist in the fetal period or at birth. Genetic factors: When similar cases exist in the family, the risk of children suffering from patellar dysplasia increases. Fetal malnutrition: The formation and growth of the patella require adequate nutrition supply, and insufficient nutrition during pregnancy affects the development of the patella. Maternal diseases during pregnancy: such as diabetes, hypothyroidism, etc., lead to maternal endocrine disorders and affect the bone growth of the fetus. However, the existing method of stabilizing the knee joint by wearing protective gear is bulky and inconvenient to wear.

[0003] Through the above analysis, the problems and defects of the prior art are as follows:

[0004] The existing method of stabilizing the knee joint is to wear a protective gear, which is bulky and inconvenient to wear. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides an arthroscopic anterior and posterior cruciate ligament reconstruction and auxiliary stress device for patellar dislocation.

[0006] The present invention is achieved as follows: an arthroscopic anterior and posterior cruciate ligament reconstruction and auxiliary stress device for patellar dislocation of the knee comprises four brackets, wherein the upper end of the bracket is connected to the top steel needle by a snap buckle, and the lower end of the bracket is connected to the bottom steel needle by a snap buckle; a gear device is connected below the bottom steel needle, and four elastic devices are buckled and connected on the gear, and the ends of the elastic devices are locked at the femoral end and the tibial end by specific steel nails.

[0007] Furthermore, the gear has a groove buckle, which can lock the elastic device at various angles.

[0008] Furthermore, the elastic device is a retractable elastic device made of impermeable material.

[0009] Furthermore, two adjacent elastic devices are screwed in and fixed to the femoral end by steel nails, and another two elastic devices are screwed in and fixed to the tibial end by steel nails.

[0010] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solutions to be protected by the present invention are as follows:

[0011] The anterior and posterior cruciate ligament reconstruction and auxiliary stress device for patellar dislocation under arthroscopy provided by the present invention is easy to wear through a bracket with a buckle, and is easy to fix through an elastic device; the fixing force is easy to adjust through gears; the device of the present invention has a simple structure, is easy to wear, and is light and labor-saving.

[0012] The technical problems of the prior art solved by the present invention are:

[0013] 1. Unstable patellar fixation: In surgery for congenital patellar dysplasia, traditional patellar fixation methods are usually difficult to maintain the stability of the patella, especially during the reconstruction of the anterior and posterior cruciate ligaments, the patella is prone to displacement, affecting the accuracy and effect of the surgery.

[0014] 2. Difficulty in adjusting the fixation force: Existing patellar fixation devices lack an effective force adjustment mechanism, and are difficult to adjust in real time according to the different conditions of the patient. The tightness of the fixation belt is difficult to control, which can easily lead to over-tight or over-loose fixation, thus affecting the recovery and stability of the patella.

[0015] 3. Complex operation and low efficiency: The design of traditional patellar fixation devices is complicated and often requires multiple steps during use, which increases the operation time and the doctor's operating burden. Especially in complex arthroscopic surgery, delicate operations are limited.

[0016] 4. Uneven stress distribution after surgery: After patellar fixation, traditional devices can hardly ensure uniform stress distribution of the patella and surrounding tissues after surgery, which can easily lead to postoperative stress concentration and affect ligament recovery and long-term rehabilitation effects.

[0017] The significant technical progress achieved by the present invention:

[0018] 1. The stability of patella fixation is greatly improved: The present invention provides a multi-point fixation design through the synergistic effect of the clip 1, the fixing belt 2 and the adhesive belt 3, thereby ensuring the stability of the patella during the anterior and posterior cruciate ligament reconstruction surgery, avoiding the displacement of the patella during the surgery, and improving the accuracy and success rate of the surgery.

[0019] 2. Real-time adjustable fixing force: The present invention designs a combination of gear 4, rotary knob 7 and connecting rope 6, and adjusts the tightness of the fixing belt by rotary knob, so as to achieve real-time adjustment of the fixing force. The doctor can flexibly control the strength of the fixing belt according to the actual situation of the operation, ensuring that the support of the patella is both stable and does not cause unnecessary pressure, which significantly improves the flexibility of operation.

[0020] 3. Easy to operate and improve surgical efficiency: Compared with traditional devices, the design of the present invention simplifies the operation process. The adhesive tape and rotation adjustment mechanism make the fixing device easy to install and adjust, reducing the operation steps and time of the operation, improving the surgical efficiency, and reducing the workload of the doctor. It is especially suitable for complex arthroscopic surgery environments.

[0021] 4. Uniform stress distribution after surgery: Through the adjustable fixing strap and clip structure, the present invention can provide uniform stress distribution, which helps to evenly bear stress on the patella and surrounding tissues after surgery, reduce postoperative stress concentration, promote the recovery of the patella and anterior and posterior cruciate ligaments, and improve the long-term rehabilitation effect of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of an arthroscopic anterior and posterior cruciate ligament reconstruction and auxiliary stress device for patellar dislocation provided by an embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of the bottom structure of the device provided by an embodiment of the present invention.

[0024] In the figure: 1. Top steel needle; 2. Bracket; 3. Bottom steel needle; 4. Gear; 5. Elastic device; 6. Buckle. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] The arthroscopic anterior and posterior cruciate ligament reconstruction and auxiliary stress device for knee patellar dislocation of the present invention is mainly used in the surgical process of knee patellar dislocation to assist in fixing the patella and ligaments, making the postoperative recovery more stable and efficient. The working principle of the device includes multiple parts, as follows:

[0027] 1. Functions of clips and fixing straps

[0028] As the main part of the device, the clamp has good support and fixation functions. The four corners of the clamp are connected with fixing straps, which wrap the knee joint to provide stable external support. The length of the fixing strap is adjustable and connected to the fixing point outside the knee through the clamp to ensure that the ligaments and patella of the knee joint remain in a stable position after surgery. The function of the clamp is to limit the displacement of the patella and provide additional stress support for the knee joint after ligament reconstruction, helping patients recover quickly.

[0029] 2. How to use the adhesive tape

[0030] The right side of the clip is equipped with an adhesive tape, which is designed to allow the device to be quickly fixed to the patient's knee joint, providing a non-invasive external fixation method. The adhesive tape contacts the skin and forms a strong bond, ensuring that the device is not easy to slide or shift after surgery. The use of the adhesive tape allows the device to adapt to knee joints of different sizes, while facilitating adjustment and removal, reducing patient discomfort.

[0031] 3. Gear and knob adjustment mechanism

[0032] A gear is embedded on the back of the device, and the gear controls the tightness of the fixation belt by rotating the knob. By rotating the knob, the user can adjust the position of the gear, thereby changing the tension of the fixation belt. This design ensures that the device can flexibly adjust the pressure on the knee joint as needed after surgery to meet the rehabilitation needs of different stages after surgery. The precise adjustment mechanism of the rotary knob enables the device to provide uniform stress distribution, avoid excessive pressure on the knee joint, and ensure the comfort and safety of postoperative rehabilitation.

[0033] 4. Stress conduction function of connecting rope

[0034] The gear and the fixation belt are connected by a connecting rope. When the knob adjusts the rotation angle of the gear, the connecting rope simultaneously adjusts the tension of the fixation belt. The connecting rope plays the role of transmitting the adjustment force from the gear to the fixation belt, so that the entire device can quickly adjust the stress. This design ensures that the device can accurately adjust the support force for the knee joint, effectively reducing the risk of secondary injury or poor surgical results caused by improper tightness.

[0035] 5. The fixing function of the fixing hole

[0036] A fixing hole is provided at the end of the fixation belt, which is used to insert a fixing bolt or other fixing device, so that the fixation belt can be firmly fixed on the operating table or support device. This design can ensure that the knee joint remains in a stable position during surgery and postoperative rehabilitation, reducing the risk of patellar displacement. The close connection between the fixation hole and the external support structure ensures the stability of the device and avoids the interference of accidental displacement on the ligament reconstruction effect.

[0037] 6. Stress control and auxiliary functions

[0038] Through the coordinated work of the device's rotating knob, gears, fixing belt, connecting rope and other components, the device can monitor and adjust the stress state of the knee joint in real time. For patients with patellar dysplasia, the recovery stage after ligament reconstruction is very critical. The auxiliary stress function provided by the device helps to reduce postoperative patellar dislocation and ligament re-injury, ensure the correct growth and repair of ligaments and patella after surgery, and ultimately improve the overall effect of the surgery.

[0039] Through the coordinated work of the above functions, the device can effectively improve the recovery quality of patients after surgery for congenital patellar dysplasia and ensure the stability of the knee joint after ligament reconstruction.

[0040] like Figure 1 , 2 As shown, an arthroscopic anterior and posterior cruciate ligament reconstruction and auxiliary stress device for patellar dislocation provided by an embodiment of the present invention comprises:

[0041] Protective clip 1, fixing belt 2, adhesive belt 3, gear 4, fixing hole 5, connecting rope 6, rotating knob 7.

[0042] The four corners of the guard clip 1 are provided with fixing belts 2; the right side of the guard clip 1 is provided with an adhesive belt 3; the back of the guard clip 1 is embedded with a gear 4; and the gear 4 is provided with a rotating button 7.

[0043] The gear 4 provided in the embodiment of the present invention is connected to the fixing belt 2 via a connecting rope 6 .

[0044] The fixing belt 2 provided in the embodiment of the present invention has a fixing hole 5 at its rear end.

[0045] When the present invention is working, first, the protective clamp 1 is opened by the adhesive tape 3; the protective clamp 1 is placed at the patella position; the protective clamp 1 is fixed by the adhesive tape 3; the fixing belt 2 is fixed at the patella; the gear 4 is turned by the rotating knob 7 to pull the fixing belt 2 with the connecting rope 6, so as to adjust the strength of the fixing belt.

[0046] The arthroscopic anterior and posterior cruciate ligament reconstruction and auxiliary stress device for patellar dislocation provided by the present invention provides targeted patellar fixation and stress adjustment through precise mechanical design. First, the protective clip 1 of the device can be flexibly opened and fitted to the patella through the opening function of the adhesive tape 3. The structural design of the protective clip allows it to fit tightly above the patella, ensuring that the device will not shift during the operation and providing a stable support effect.

[0047] During the fixation process, the fixation belt 2 is fixed through the four corners of the clip 1, and is firmly fixed to the patella through the fixation hole 5 at its tail end. The fixation belt provides initial support and fixation to prevent the patella from unnecessary movement or rotation during the operation, and ensures that the patella is in the correct position for reconstruction of the anterior and posterior cruciate ligaments.

[0048] Next, the surgeon can use the rotating knob 7 to rotate the gear 4 provided on the back of the clip 1. The gear 4 pulls the fixing belt 2 through the connecting rope 6, and the tightness of the fixing belt is further adjusted by the mechanical traction principle. The design of the rotating knob allows the surgeon to flexibly adjust the fixing force according to the progress of the operation to ensure that the patella is adequately supported without excessive pressure.

[0049] The design of the entire device ensures that during the anterior and posterior cruciate ligament reconstruction surgery, the force of patella fixation can be adjusted through simple mechanical operations, thereby accurately controlling the position and pressure distribution of the patella, avoiding patella position deviation, providing efficient surgical assistance, and improving surgical results and recovery quality.

[0050] Example 1: Auxiliary stress device for rehabilitation after knee surgery

[0051] After a patient with knee patellar dislocation and anterior and posterior cruciate ligament injury underwent knee arthroscopy, the doctor selected the auxiliary stress device of the present invention to help the patient recover. After the operation, the doctor fixed the device on the patient's knee joint, and the clip wrapped around the knee joint to ensure that the knee joint was in a stable state. The device was tightly attached to the patient's skin by an adhesive tape, and the fixing belt was precisely adjusted by a gear and a rotating knob to ensure that the tension of the fixing belt was moderate and provided moderate pressure.

[0052] At this time, the fine adjustment function of the rotating knob helps the doctor gradually reduce the pressure of the fixation belt according to the patient's recovery, avoiding excessive stress on the knee joint and preventing secondary injury caused by excessive pressure. At the same time, the flexible material of the device makes the patient feel comfortable during use without causing discomfort to the skin. The doctor also uses the fixing hole to firmly fix the device to the operating table or rehabilitation equipment to ensure that the device remains stable when the patient moves or undergoes physical therapy, helping the patient recover safely.

[0053] Example 2: Knee joint fixation device in sports rehabilitation

[0054] Another patient suffered a tear of the anterior and posterior cruciate ligaments of the knee while participating in sports and required ligament reconstruction surgery. After the surgery, in order to ensure the stability of the patella and ligaments during the rehabilitation process, the doctor used the auxiliary stress device of the present invention for the patient's rehabilitation treatment.

[0055] During the postoperative rehabilitation stage, the doctor controls the operation of the gears by adjusting the rotary knob, so that the pressure applied by the fixation belt is gradually reduced to adapt to the gradual recovery of the knee joint. The connecting rope ensures the linkage operation of the gears and the fixation belt, ensuring precise control of pressure. By adjusting the adhesive belt, the device can fit the patient's knee joint area closely and provide the necessary support during the patient's early sports rehabilitation.

[0056] In order to ensure that the device does not slip during exercise, the doctor uses the fixing hole to firmly connect the fixing belt to the rehabilitation equipment. During the entire rehabilitation process, the device helps patients maintain the stability of the knee joint, avoids unnecessary patellar dislocation or ligament strain, and accelerates the patient's recovery process.

[0057] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. An arthroscopic anterior and posterior cruciate ligament reconstruction and auxiliary stress device for patellar dislocation, characterized in that: It includes 4 brackets, the upper end of the bracket is connected to the top steel needle by a snap buckle, and the lower end of the bracket is connected to the bottom steel needle by a snap buckle; the bottom of the bottom steel needle is connected to a gear device, and the gear is buckled and connected to 4 elastic devices, and the ends of the elastic devices are locked at the femoral end and the tibial end by specific steel nails.

2. The arthroscopic anterior and posterior cruciate ligament reconstruction and auxiliary stress device for patellar dislocation as claimed in claim 1, characterized in that: The gear has grooved snaps to lock the elastic device at all angles.

3. The arthroscopic anterior and posterior cruciate ligament reconstruction and auxiliary stress device for patellar dislocation as claimed in claim 1, characterized in that: The elastic device is a retractable elastic device made of impermeable material.

4. The arthroscopic anterior and posterior cruciate ligament reconstruction and auxiliary stress device for patellar dislocation as claimed in claim 1, characterized in that: Two adjacent elastic devices are screwed in and fixed at the femoral end by steel nails, and the other two elastic devices are screwed in and fixed at the tibial end by steel nails.

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