A tibial platform osteotome

Abstract

The utility model relates to the technical field of bone cutting apparatus, and disclose a tibial plateau bone cutting apparatus, including bone shovel, the top fixed connection of bone shovel has the sleeve rod, the outer surface sliding connection of sleeve rod has the sleeve, the top thread connection of sleeve rod has the connecting rod, the top fixed connection of connecting rod has the top block, the top surface fixed connection of top block has the arc plate, the outer surface of connecting rod is sleeved with spring, the top fixed connection of sleeve has the top plate, the top surface of top plate is connected with the casing through screw, the utility model discloses through the eccentric wheel of frequency conversion motor drive, drive bone shovel vibration cutting osteophyte, compared with traditional bone rongeur manual operation, can quickly remove the redundant osteophyte on tibial plateau, effectively shorten the operation time, reduce patient anaesthesia risk and medical staff work intensity. Moreover, the arc blade of bone shovel bottom end cooperates vibration cutting, can get the regular shape inside tibial plateau, reduces the situation of the influence of subsequent operation because of the osteophyte removal shape is not good.

Description

Technical Field

[0001] This utility model relates to the field of osteotomy equipment technology, specifically a tibial plateau osteotomy equipment. Background Technology

[0002] In routine clinical work, a necessary step in total knee replacement is tibial plateau osteotomy. Usually, after the tibial plateau osteotomy, there will be excess bone spurs on the tibial plateau that need to be removed. We usually use bone forceps to remove the excess bone spurs little by little until the shape after removal is satisfactory before proceeding to the next step. This is both time-consuming and may result in unsatisfactory shape after removal.

[0003] In total knee replacement surgery, tibial plateau osteotomy is a crucial and essential step. After the osteotomy, excess osteophytes often remain on the surface of the tibial plateau. According to current clinical practice, surgeons typically use bone forceps to remove these osteophytes.

[0004] However, this traditional method has many drawbacks. First, removing osteophytes using bone forceps requires the doctor to manually remove them bit by bit, which is extremely time-consuming, prolonging the operation time, increasing the patient's anesthesia risks, and increasing the workload of medical staff. Second, the operation of bone forceps is highly dependent on the doctor's experience and skills, making it difficult to guarantee that the shape of the osteophyte removed each time will perfectly match the surgical expectations. This can easily lead to unsatisfactory shapes, which may affect the smooth progress of subsequent surgical steps and the final outcome of the total knee replacement surgery. Utility Model Content

[0005] Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a tibial plateau osteotomy device, which has the advantages of being easy and quick to operate, and being able to quickly remove excess bone spurs from the tibial plateau to obtain a regularly shaped medial tibial plateau, thus solving the aforementioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a tibial plateau osteotomy device, comprising a bone shovel, a sleeve fixedly connected to the top end of the bone shovel, a sleeve slidably connected to the outer surface of the sleeve, a connecting rod threadedly connected to the top end of the sleeve, a top block fixedly connected to the top end of the connecting rod, an arc-shaped plate fixedly connected to the top surface of the top block, a spring sleeved on the outer surface of the connecting rod, a top plate fixedly connected to the top end of the sleeve, a cover connected to the top surface of the top plate by screws, and a side plate fixedly connected to the top surface of the top plate, a variable frequency motor mounted on the outer surface of the side plate by screws, an eccentric wheel connected to the output shaft of the variable frequency motor, a handle fixedly connected to the center of the top surface of the cover, and a slider connected to the outer surface of the sleeve by screws.

[0009] Preferably, the bottom end of the bone shovel has an arc-shaped cutting edge, the output shaft of the variable frequency motor is connected to the eccentric wheel by a key, and an operation button is installed on the outer surface of the cover. The operation button is used to control the variable frequency motor.

[0010] Preferably, two sliders are connected to the outer peripheral surface of the sleeve near the top end by screws, and two sliding grooves are formed through the outer surface of the sleeve, with the sliders sliding in contact with the sliding grooves.

[0011] Preferably, the outer shaft surface of the eccentric wheel slides in contact with the arc-shaped plate, the top end of the spring abuts against the lower surface of the top block, and the bottom end of the spring abuts against the top end of the sleeve rod.

[0012] Preferably, the back of the cover is provided with heat dissipation holes, and a cooling fan is installed on the inner wall of the cover, the cooling fan being connected in parallel with the power supply of the variable frequency motor.

[0013] Preferably, the outer surface of the handle is covered with a non-slip rubber layer.

[0014] Compared with the prior art, this utility model provides a tibial plateau osteotomy device, which has the following beneficial effects:

[0015] This invention utilizes a variable frequency motor to drive an eccentric wheel, which in turn causes a bone scraper to vibrate and cut osteophytes. Compared to traditional manual operation with bone forceps, this method can quickly remove excess osteophytes from the tibial plateau, effectively shortening the operation time and reducing the patient's anesthesia risk and the workload of medical staff. Furthermore, the arc-shaped cutting edge at the bottom of the bone scraper, combined with vibratory cutting, produces a regularly shaped medial tibial plateau, reducing the likelihood of poorly shaped osteophytes affecting subsequent surgeries and ensuring the final outcome of total knee replacement surgery. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2This is a schematic diagram of the explosive decomposition of the structure of this utility model;

[0018] Figure 3 The structure of this utility model Figure 2 A magnified view of part A in the diagram.

[0019] The components are: 1. bone shovel; 2. sleeve rod; 3. sleeve; 4. connecting rod; 5. top block; 6. arc plate; 7. spring; 8. top plate; 9. cover; 10. side plate; 11. frequency conversion motor; 12. eccentric wheel; 13. handle; 14. slider; 15. groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-3 A tibial plateau osteotomy device includes a bone shovel 1, a sleeve 2 fixedly connected to the top of the bone shovel 1, a sleeve 3 slidably connected to the outer surface of the sleeve 2, a connecting rod 4 threadedly connected to the top of the sleeve 2, a top block 5 fixedly connected to the top of the connecting rod 4, an arc-shaped plate 6 fixedly connected to the top surface of the top block 5, a spring 7 sleeved on the outer surface of the connecting rod 4, a top plate 8 fixedly connected to the top of the sleeve 3, a cover 9 connected to the top surface of the top plate 8 by screws, and a side plate 10 fixedly connected to the top surface of the top plate 8, a variable frequency motor 11 mounted on the outer surface of the side plate 10 by screws, an eccentric wheel 12 connected to the output shaft of the variable frequency motor 11, a handle 13 fixedly connected to the center of the top surface of the cover 9, and a slider 14 connected to the outer surface of the sleeve 2 by screws.

[0022] Specifically, the bottom of the bone shovel 1 has an arc-shaped cutting edge, the output shaft of the variable frequency motor 11 is connected to the eccentric wheel 12 by a key, and the outer surface of the cover 9 is equipped with an operation button, which is used to control the variable frequency motor 11.

[0023] Specifically, two sliders 14 are connected to the outer periphery of the sleeve 2 near the top by screws, and two grooves 15 are opened through the outer surface of the sleeve 3, with the sliders 14 sliding in contact with the grooves 15.

[0024] The advantage is that the bottom end of the bone shovel 1 has an arc-shaped cutting edge that fits the outer periphery of the tibial plateau. By contacting the bone shovel 1 with the osteophytes on the tibial plateau, the variable frequency motor 11 is started by the operation button on the outer surface of the housing 9, which then drives the eccentric wheel 12 to rotate. During the rotation of the eccentric wheel 12, it will continuously contact the outer surface of the arc plate 6. Due to the eccentric structure of the eccentric wheel 12, the contact position and force between it and the arc plate 6 change continuously during rotation. This causes the arc plate 6, under the action of the eccentric wheel 12, to drive the sleeve rod 2 to reciprocate along the sleeve 3 through the top block 5 and the connecting rod 4, and to move in the groove 15 by setting the slider 14. The sleeve 2 is moved repeatedly to prevent it from rotating under vibration. The sleeve 2 is connected to the bone shovel 1, which in turn drives the bone shovel 1 to vibrate at a certain frequency and amplitude. This vibration enables the bone shovel 1 to cut osteophytes on the tibial plateau more efficiently. By using the arc-shaped cutting edge of the bottom end of the bone shovel 1 to fit the outer periphery of the tibial plateau, excess osteophytes can be quickly removed, which helps to obtain a regular-shaped medial tibial plateau. Compared with the traditional manual operation of bone forceps, this method greatly improves the efficiency and accuracy of osteophyte removal, reduces operation time and the workload of medical staff, reduces the occurrence of unsatisfactory osteophyte shapes due to improper operation, and ensures the smooth progress of subsequent operations.

[0025] Specifically, the outer shaft surface of the eccentric wheel 12 slides in contact with the arc plate 6, the top end of the spring 7 abuts against the lower surface of the top block 5, and the bottom end of the spring 7 abuts against the top end of the sleeve rod 2.

[0026] Specifically, the back of the cover 9 has heat dissipation holes, and a cooling fan is installed on the inner wall of the cover 9. The cooling fan is connected in parallel with the power supply of the variable frequency motor 11.

[0027] Specifically, the outer surface of the handle 13 is covered with a non-slip rubber layer.

[0028] The advantages are as follows: The spring 7 primarily serves as a buffer and reset mechanism. When the eccentric wheel 12 rotates, driving the arc plate 6, top block 5, and connecting rod 4, the sleeve rod 2 moves accordingly. During this process, the spring 7 buffers the impact force generated by the movement of the sleeve rod 2, preventing damage to components due to excessive instantaneous force. Simultaneously, when the eccentric wheel 12 stops or its direction of movement changes, the spring 7 can use its own elasticity to quickly reset the sleeve rod 2, ensuring the continuous and stable vibration cutting action of the bone shovel 1. A cooling fan is included because the variable frequency motor 11 generates a large amount of heat during operation. If this heat accumulates, it will affect the performance and lifespan of the variable frequency motor 11. The cooling fan is connected in parallel with the power supply of the variable frequency motor 11, allowing the heat generated by the motor to be dissipated through the heat dissipation holes on the back of the casing 9, maintaining the variable frequency motor 11 at a suitable operating temperature. A handle 13 is provided, and its outer surface is covered with a non-slip rubber layer, making it convenient for the surgeon to hold and operate the entire osteotomy device. During surgery, the surgeon can use the handle 13 to stably control the position and angle of the osteotomy device, ensuring precise operation.

[0029] In use, firstly, the doctor holds the entire osteotome by the handle 13 and places the curved blade at the bottom of the bone shovel 1 on the osteophyte of the tibial plateau. Next, the doctor starts the variable frequency motor 11 via the operation button mounted on the outer surface of the housing 9. The variable frequency motor 11 drives the eccentric wheel 12 to rotate. During the rotation of the eccentric wheel 12, its outer shaft surface continuously slides in contact with the curved plate 6, causing the curved plate 6 to drive the top block 5, connecting rod 4, and sleeve rod 2 to reciprocate along the sleeve 3. The slider 14 on the sleeve rod 2 slides within the groove 15 of the sleeve 3, ensuring smooth movement. Stability is ensured, while spring 7 acts as a buffer and reset mechanism; the reciprocating motion of the sleeve 2 drives the bone shovel 1 to vibrate, using its arc-shaped cutting edge to cut bone spurs and remove excess bone spurs; during use, the cooling fan works synchronously with the power supply of the variable frequency motor 11, and the heat generated by the variable frequency motor 11 is discharged in time through the heat dissipation holes on the back of the cover 9; during the operation, the doctor can hold the handle 13 to stably control the position and angle of the osteotome, and the anti-slip rubber layer on the outer surface of the handle 13 can prevent the osteotome from slipping during operation.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tibial platform osteotome comprising a bone spud (1), characterized in that: The top end of the bone shovel (1) is fixedly connected to a sleeve rod (2), the outer surface of the sleeve rod (2) is slidably connected to a sleeve (3), the top end of the sleeve rod (2) is threadedly connected to a connecting rod (4), the top end of the connecting rod (4) is fixedly connected to a top block (5), the top surface of the top block (5) is fixedly connected to an arc plate (6), the outer surface of the connecting rod (4) is sleeved with a spring (7), the top end of the sleeve (3) is fixedly connected to a top plate (8), the top surface of the top plate (8) is connected to a cover (9) by screws, and the top surface of the top plate (8) is fixedly connected to a side plate (10), the outer surface of the side plate (10) is mounted with a variable frequency motor (11) by screws, the output shaft of the variable frequency motor (11) is connected to an eccentric wheel (12), the center of the top surface of the cover (9) is fixedly connected to a handle (13), and the outer surface of the sleeve rod (2) is connected to a slider (14) by screws.

2. A tibial platform osteotome according to claim 1, wherein: The bottom end of the bone shovel (1) has an arc-shaped cutting edge. The output shaft of the variable frequency motor (11) is connected to the eccentric wheel (12) by a key. An operation button is installed on the outer surface of the cover (9). The operation button is used to control the variable frequency motor (11).

3. A tibial platform osteotome according to claim 1, wherein: Two sliders (14) are connected to the outer periphery of the sleeve (2) near the top by screws. Two grooves (15) are opened through the outer surface of the sleeve (3). The sliders (14) slide in contact with the grooves (15).

4. A tibial platform osteotome according to claim 1, wherein: The outer shaft surface of the eccentric wheel (12) slides in contact with the arc plate (6), the top end of the spring (7) abuts against the lower surface of the top block (5), and the bottom end of the spring (7) abuts against the top end of the sleeve rod (2).

5. A tibial platform osteotome according to claim 1, wherein: The back of the cover (9) is provided with heat dissipation holes, and a cooling fan is installed on the inner wall of the cover (9). The cooling fan is connected in parallel with the power supply of the variable frequency motor (11).

6. A tibial platform osteotome according to claim 1, wherein: The outer surface of the handle (13) is covered with an anti-slip rubber layer.

Images