Osteotomy guide plate assembly based on tibia and femur

Abstract

The osteotomy guide plate assembly based on the tibia and the femur comprises a positioning plate and a guide plate, one side of the positioning plate is fixedly connected with a limiting plate, one side of the guide plate is fixedly connected with a supporting table, the limiting plate is rotationally connected with a lead screw, and the lead screw is in threaded connection with the supporting table. A first knob is rotationally connected to the top end of the limiting plate, an output shaft of the first knob penetrates through the limiting plate and is fixedly connected with the lead screw, a sliding rail is arranged on one side of the positioning plate, a sliding groove is formed in one side of the guide plate, a connecting table is fixedly connected to one side of the guide plate and is in threaded connection with a threaded column, and an osteotomy groove is formed in one side of the guide plate; and one end of the threaded column is rotationally connected with a cutter frame. According to the utility model, the osteotomy error can be reduced, the success rate of an operation can be improved, the pollution of an operation area can be reduced, the operation efficiency of an operator can be improved, the accuracy of the operation can be improved, and the trauma to a patient can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an osteotomy guide plate assembly based on the tibia and femur. Background Technique

[0002] In knee joint surgeries, especially total knee arthroplasty, accurate osteotomy is crucial. In recent years, the development of 3D printing technology has brought revolutionary changes to the design of osteotomy guide plates. Through the CT data of patients, the three-dimensional image of the lower limb can be accurately reconstructed, and on this basis, personalized osteotomy guide plates can be designed. This method can simulate the surgery on a computer in advance to determine the optimal osteotomy amount and angle, thereby reducing time and improving accuracy in actual surgeries.

[0003] Although the existing osteotomy guide plates can determine the osteotomy position through the CT data of patients, during the actual surgical process, there may still be inaccurate osteotomy positioning or deviation of the osteotomy angle of the cutter groove. Such factors may affect the accuracy of the surgery, increase the osteotomy error, and affect the success rate of the surgery. Moreover, during osteotomy, the traditional osteotomy guide plates cannot effectively clean bone chips and other debris, and the remaining bone chips may contaminate the surgical area and affect the operation efficiency of the surgeon. Content of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and to propose an osteotomy guide plate assembly based on the tibia and femur.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An osteotomy guide plate assembly based on the tibia and femur, including a positioning plate and a guide plate. One side of the positioning plate is fixedly connected with a limiting plate, one side of the guide plate is fixedly connected with a support platform, the limiting plate is rotatably connected with a lead screw, and the lead screw is in threaded connection with the support platform. The top end of the limiting plate is rotatably connected with a first knob, and the output shaft of the first knob passes through the limiting plate and is fixedly connected with the lead screw. One side of the positioning plate is provided with a slide rail, one side of the guide plate is provided with a chute, one side of the guide plate is fixedly connected with a connecting platform, the connecting platform is in threaded connection with a threaded column, one end of the threaded column is fixedly connected with a second knob, one side of the guide plate is provided with an osteotomy groove, and one end of the threaded column is rotatably connected with a cutter holder.

[0007] As a further scheme of the utility model, the positioning plate is made by importing the three-dimensional CT data of the bilateral lower limb bones into a computer before surgery and using three-dimensional printing technology, so that it can perfectly fit the patient's bones.

[0008] As a further solution of the present utility model, a plurality of fixing holes are provided on both sides of the positioning plate, and the fixing holes are evenly distributed.

[0009] As a further solution of the present utility model, micro electric dust suction pumps are provided on both sides of the osteotomy groove, and a filter is provided on one side of the micro electric dust suction pump.

[0010] As a further solution of the present utility model, a collector is fixedly connected to the top end of the limiting plate.

[0011] As a further solution of the present utility model, a gasket is provided between the connecting table and the cutter holder.

[0012] As a further solution of the present utility model, a scale is provided on the inner wall of one side of the support table.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. By providing the osteotomy groove and the slide rail, the guide plate can slide on the positioning plate, and by providing the rotatable and adjustable cutter holder, the doctor is allowed to adjust the osteotomy angle and position according to the specific conditions of the patient. This adjustability helps to accurately perform the operation, reduce osteotomy errors, and improve the success rate of the operation.

[0015] 2. By providing the micro electric dust suction pump, the filter and the collector, bone chips can be automatically absorbed and collected during the osteotomy process, reducing the pollution of the operation area and improving the operation efficiency of the operator.

[0016] 3. Based on the three-dimensional CT data of the patient's bilateral lower limb bones, the 3D printed guide plate can be customized to ensure its perfect fit with the bone surface. This not only improves the accuracy of the operation, but also reduces the trauma to the patient. Description of the Drawings

[0017] Figure 1 It is the front view structural schematic diagram of an osteotomy guide plate assembly based on the tibia and the femur proposed by the present utility model;

[0018] Figure 2 It is the side view structural schematic diagram of an osteotomy guide plate assembly based on the tibia and the femur proposed by the present utility model;

[0019] Figure 3 It is the internal structural schematic diagram of an osteotomy guide plate assembly based on the tibia and the femur proposed by the present utility model.

[0020] In the figure: 1, positioning plate; 2, guide plate; 3, limiting plate; 4, support platform; 5, lead screw; 6, first knob; 7, slide rail; 8, threaded post; 9, second knob; 10, osteotomy groove; 11, cutter holder; 12, connecting table; 13, fixing hole; 14, micro electric dust suction pump; 15, filter; 16, collector; 17, gasket; 18, chute; 19, dial. Specific embodiments

[0021] The following will be described in detail in conjunction with embodiments the implementation manner of the present utility model, so as to fully understand how the present utility model uses technical means to solve technical problems and achieve the implementation process of technical effects and implement accordingly.

[0022] Referring to Figures 1 - 3 , an osteotomy guide plate assembly based on the tibia and femur, comprising a positioning plate 1 and a guide plate 2. One side of the positioning plate 1 is fixedly provided with a limiting plate 3 through a bolt, and one side of the guide plate 2 is fixedly provided with a support platform 4 through a bolt. The limiting plate 3 is rotatably connected with a lead screw 5, and the lead screw 5 is in threaded connection with the support platform 4. The top end of the limiting plate 3 is rotatably connected with a first knob 6, and the output shaft of the first knob 6 passes through the limiting plate 3 and is key-connected with the lead screw 5. One side of the positioning plate 1 is provided with a slide rail 7, and one side of the guide plate 2 is provided with a chute 18, so that by rotating the first knob 6, the lead screw 5 is driven to rotate. Since the lead screw 5 is in threaded connection with the support platform 4, and the support platform 4 is fixedly connected to the guide plate 2 through a bolt, the movement of the guide plate 2 along the direction of the slide rail 7 is controlled. One side of the guide plate 2 is fixedly provided with a connecting table 12 through a bolt. The connecting table 12 is in threaded connection with a threaded post 8. One end of the threaded post 8 is key-connected with a second knob 9. One side of the guide plate 2 is provided with an osteotomy groove 10. One end of the threaded post 8 is rotatably connected with a cutter holder 11, so that according to the specific situation in the operation, the sliding of the guide plate 2 can be controlled by rotating the first knob 6, and then the position of the osteotomy groove 10 can be adjusted. By rotating the cutter holder 11, the osteotomy angle of the cutter can be adjusted. After determining the angle, the cutter holder 11 can be fixed on the connecting table 12 by rotating the second knob 9.

[0023] In particular, the positioning plate 1 is made by importing the three-dimensional CT data of the bilateral lower limb bones into a computer before the operation, and then through three-dimensional printing technology, so that it can perfectly fit the patient's bones.

[0024] In particular, both sides of the positioning plate 1 are provided with a plurality of fixing holes 13, and the fixing holes 13 are evenly distributed, so that when the positioning plate 1 fits the patient's bones, the positioning plate 1 can be fixed at the osteotomy site of the patient through fixing nails.

[0025] In particular, both sides of the osteotomy groove 10 are provided with micro electric dust suction pumps 14 for absorbing residual bone chips and fragments during the operation. One side of the micro electric dust suction pump 14 is provided with a filter 15 for filtering impurities.

[0026] Particularly, a collector 16 is fixed to the top end of the limit plate 3 by bolts for collecting bone chips and fragments absorbed by the micro electric dust suction pump 14.

[0027] Particularly, a gasket 17 is provided between the connecting table 12 and the cutter holder 11, which can fix the cutter holder 11 more stably after determining the cutter angle.

[0028] Particularly, a scale disk 19 is provided on the inner wall of one side of the support table 4, enabling the surgical operator to adjust the angle of the cutter holder 11 more precisely.

[0029] Working principle: When in use, before the operation, the three-dimensional CT data of the lower limb bones is imported into the computer, and then the positioning plate 1 that can perfectly fit the patient's bones is made through three-dimensional printing technology. The positioning plate 1 is fixed at the osteotomy site of the patient through the fixing holes 13 on both sides of the positioning plate 1 by fixing nails. According to the specific situation of the operation, the first knob 6 is adjusted to control the rotation of the lead screw 5. The rotation of the lead screw 5 causes the support table 4 to move. Since the support table 4 is fixedly connected to the guide plate 2, it drives the guide plate 2 to move along the direction of the guide rail 7, thereby controlling the osteotomy position of the osteotomy groove 10. At this time, the cutter holder 11 is rotated through the scale disk 19, and its angle is adjusted according to the actual situation during the operation. After the adjustment is completed, the angle of the cutter holder 11 is fixed by rotating the second knob 9. During osteotomy, the micro electric dust suction pump 14 is started to absorb the bone chips and fragments generated during the operation, and the fragments are collected into the collector 16 through the filter 15.

[0030] The above description shows and describes several preferred embodiments of the utility model. However, as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the utility model concept described herein through the above teachings or the technology or knowledge in the relevant field. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the utility model shall fall within the protection scope of the appended claims of the utility model.

Claims

1. A tibia and femur osteotomy guide assembly, comprising a positioning plate (1) and a guide plate (2), characterized in that: One side of the positioning plate (1) is fixedly connected to a limiting plate (3), one side of the guide plate (2) is fixedly connected to a support platform (4), the limiting plate (3) is rotatably connected to a screw rod (5), and the screw rod (5) and the support platform (4) are threadedly connected, the top of the limiting plate (3) is rotatably connected to a first knob (6), the output shaft of the first knob (6) passes through the limiting plate (3) and is fixedly connected to the screw rod (5), one side of the positioning plate (1) is provided with a slide rail (7), one side of the guide plate (2) is provided with a slide groove (18), one side of the guide plate (2) is fixedly connected to a connecting platform (12), the connecting platform (12) is threadedly connected to a threaded column (8), one end of the threaded column (8) is fixedly connected to a second knob (9), one side of the guide plate (2) is provided with an osteotomy groove (10), and one end of the threaded column (8) is rotatably connected to a cutting knife holder (11).

2. The osteotomy guide assembly based on tibia and femur according to claim 1, characterized in that: The positioning plate (1) is manufactured by three-dimensional printing technology by importing three-dimensional CT data of the bones of both lower limbs into a computer before surgery, so that it can perfectly fit the patient's bones.

3. The osteotomy guide assembly based on tibia and femur according to claim 2, characterized in that: A plurality of fixing holes (13) are provided on both sides of the positioning plate (1), and the fixing holes (13) are evenly distributed.

4. The osteotomy guide assembly based on tibia and femur according to claim 1, characterized in that: Micro electric vacuum pumps (14) are provided on both sides of the osteotomy groove (10), and a filter (15) is provided on one side of the micro electric vacuum pump (14).

5. The osteotomy guide assembly based on tibia and femur according to claim 1, characterized in that: The top end of the limiting plate (3) is fixedly connected to a collector (16).

6. The osteotomy guide assembly based on tibia and femur according to claim 5, characterized in that: A gasket (17) is provided between the connecting platform (12) and the cutting blade frame (11).

7. The osteotomy guide assembly based on tibia and femur according to claim 1, characterized in that: A scale plate (19) is provided on an inner wall of one side of the support platform (4).

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