An adjustable drilling guide device for femoral head modeling experiments

Abstract

This utility model relates to the field of femoral head drilling guidance technology. It provides an adjustable femoral head modeling experimental drilling guidance device, including a fixed frame. The upper end of the fixed frame is rotatably connected to both sides of a support plate. The inner cavity of the support plate is rotatably connected to a rotating mechanism. The rotating mechanism includes a rotating plate, the outer wall of which is rotatably connected to the inner cavity of the support plate. A displacement drilling mechanism is mounted on the upper end of the rotating plate. This utility model uses the displacement drilling mechanism on the rotating plate to move the femoral head drill. When it reaches the desired position, the displacement drilling mechanism fixes the drill to the rotating plate, preventing displacement of the drill during femoral head drilling, reducing errors, and ensuring accuracy.

Description

Technical Field

[0001] This utility model relates to the field of femoral head drilling guidance technology, and in particular to an adjustable drilling guidance device for femoral head necrosis modeling experiment. Background Technology

[0002] Femoral head drilling guidance is an important technique in orthopedic surgery, especially in hip joint surgery, such as femoral head core decompression.

[0003] Whether the femoral head collapses after necrosis is closely related to the location of the necrotic lesion. Therefore, animal experiments are conducted to explore the collapse factors in different necrotic sites and the efficacy of different treatment methods for necrosis in different locations, with the aim of providing personalized treatment plans for patients with femoral head necrosis.

[0004] Existing drilling guide devices only point to a single location on the femoral head and cannot extend to other locations. However, the location of early-stage femoral head necrosis lesions in clinical patients is diverse, and the probability of collapse varies depending on the location of the necrotic lesion. Current drilling guide devices cannot meet clinical needs. Therefore, it is essential to design an adjustable drilling guide device for femoral head necrosis modeling. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0006] An adjustable drilling guide device for femoral head modeling experiments includes a fixing frame, the upper end of which is rotatably connected to both sides of a support plate, and the inner cavity of the support plate is rotatably connected to a rotating mechanism.

[0007] The rotating mechanism includes a rotating plate, the outer wall of which is rotatably connected to the inner cavity of the support plate, and a displacement drilling mechanism is installed on the upper end of the rotating plate.

[0008] As an improvement to the above technical solution, the displacement drilling mechanism includes a through groove, a displacement block, a limiting hole, a fixing rod, a spring, a push plate, and a fixing hole. The through groove is opened on the upper end face of the rotating plate. The outer wall of the displacement block is engaged with the inner cavity of the through groove. The limiting hole is opened in the inner cavity of the through groove. One end of the fixing rod is engaged with the inner cavity of the displacement block and with the inner cavity of the limiting hole. One end of the spring is fixedly connected to one end of the inner cavity of the displacement block, and the other end of the spring is fixedly connected to the other end of the fixing rod. The lower end of the push plate penetrates the inner cavity of the displacement block and is fixedly connected to one end of the fixing rod. The fixing hole is opened on the upper end face of the displacement block.

[0009] As an improvement to the above technical solution, the rotating mechanism includes a first gear, a second motor, and a drive gear. One end of the first gear is fixedly connected to the outer wall of the rotating plate, one end of the second motor is fixedly connected to the upper end face of the support plate, and the output end of the second motor passes through the upper end face of the support plate and extends into the inner cavity of the support plate. The upper end of the drive gear is fixedly connected to the output end of the second motor, and the outer wall of the drive gear meshes with the first gear.

[0010] As an improvement to the above technical solution, one end of the fixing frame is fixedly connected to one end of the first motor, and the output end of the first motor is fixedly connected to one side of the support plate.

[0011] As an improvement to the above technical solution, a scale is installed on the upper surface of the support plate and the rotating plate.

[0012] As an improvement to the above technical solution, a rotating ball is installed in the inner cavity of the fixing hole, and a fixing plate is attached to one end of the rotating ball. One end of the fixing plate is fixedly connected to one end of the screw, and the outer wall of the screw is threadedly connected to the inner cavity of the displacement block.

[0013] The beneficial effects of this utility model are:

[0014] The displacement drilling mechanism on the rotating plate drives the femoral head drill to move. When it moves to the required position, the displacement drilling mechanism drives the drill to be fixed on the rotating plate, preventing the drill from shifting when drilling the femoral head, reducing errors when drilling the femoral head, and ensuring the accuracy of drilling the femoral head. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the present utility model;

[0016] Figure 2 This utility model Figure 1 The front view;

[0017] Figure 3 This utility model Figure 2 Top view;

[0018] Figure 4 This utility model Figure 3 Sectional view at point aa;

[0019] Figure 5 This utility model Figure 2 Sectional view at point bb;

[0020] Figure 6 This utility model Figure 2 Sectional view at cc;

[0021] Figure 7 This utility model Figure 6 Enlarged view at point d;

[0022] Figure 8 This is a drawing of the present utility model.

[0023] Reference numerals in the attached drawings: 1. Fixing frame; 2. Support plate; 3. First motor; 4. Rotating mechanism; 41. Rotating plate; 42. First gear; 43. Second motor; 44. Drive gear; 5. Displacement drilling mechanism; 51. Through slot; 52. Displacement block; 53. Limiting hole; 54. Fixing rod; 55. Spring; 56. Push plate; 57. Fixing hole; 571. Rotating ball; 572. Screw. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0025] Please see Figure 1-7 This utility model provides a technical solution: an adjustable drilling guide device for femoral head modeling experiment, including a fixing frame 1, the upper end of the fixing frame 1 being rotatably connected to both sides of the support plate 2, and the inner cavity of the support plate 2 being rotatably connected to the rotating mechanism 4.

[0026] The rotating mechanism 4 includes a rotating plate 41, the outer wall of which is rotatably connected to the inner cavity of the support plate 2, and a displacement drilling mechanism 5 is installed on the upper end of the rotating plate 41.

[0027] The displacement drilling mechanism 5 on the rotating plate 41 drives the femoral head drill to move. When it moves to the required position, the displacement drilling mechanism 5 drives the drill to be fixed on the rotating plate 41, preventing the drill from shifting when drilling the femoral head, reducing the occurrence of errors when drilling the femoral head, and ensuring the accuracy of drilling the femoral head.

[0028] Specifically, the displacement drilling mechanism 5 includes a through groove 51, a displacement block 52, a limiting hole 53, a fixing rod 54, a spring 55, a push plate 56, and a fixing hole 57. The through groove 51 is opened on the upper end face of the rotating plate 41. The outer wall of the displacement block 52 is engaged with the inner cavity of the through groove 51. The limiting hole 53 is opened in the inner cavity of the through groove 51. One end of the fixing rod 54 is engaged with the inner cavity of the displacement block 52 and with the inner cavity of the limiting hole 53. One end of the spring 55 is fixedly connected to one end of the inner cavity of the displacement block 52, and the other end of the spring 55 is fixedly connected to the other end of the fixing rod 54. The lower end of the push plate 56 passes through the inner cavity of the displacement block 52 and is fixedly connected to one end of the fixing rod 54. The fixing hole 57 is opened on the upper end face of the displacement block 52.

[0029] By pulling the push plate 56, the fixed rod 54 is disengaged from the inner cavity of the limiting hole 53, thereby freeing the fixed rod 54 from fixing the displacement block 52. This allows the personnel to move the displacement block 52. When it is moved to the desired position, the personnel release the push plate 56, which, under the action of the spring 55, causes the fixed rod 54 to engage with the limiting hole 53. The drill is then installed in the fixed hole 57, thus achieving the accuracy of drilling the femoral head.

[0030] Specifically, the rotating mechanism 4 includes a first gear 42, a second motor 43, and a drive gear 44. One end of the first gear 42 is fixedly connected to the outer wall of the rotating plate 41. One end of the second motor 43 is fixedly connected to the upper end face of the support plate 2, and the output end of the second motor 43 passes through the upper end face of the support plate 2 and extends into the inner cavity of the support plate 2. The upper end of the drive gear 44 is fixedly connected to the output end of the second motor 43, and the outer wall of the drive gear 44 meshes with the first gear 42.

[0031] The rotation of the second motor 43 causes the drive gear 44 to rotate, and the drive gear 44 is in a meshing state with the first gear 42. The rotation of the drive gear 44 drives the first gear 42 and then the rotating plate 41 to rotate. The displacement drilling mechanism 5 is also installed on the rotating plate 41, so that when the rotating plate 41 rotates, it drives the displacement drilling mechanism 5 to rotate. The rotation of the displacement drilling mechanism 5 drives the drill to rotate, thereby increasing the flexibility of drilling guidance.

[0032] Specifically, one end of the fixing frame 1 is fixedly connected to one end of the first motor 3, and the output end of the first motor 3 is fixedly connected to one side of the support plate 2.

[0033] The start of the first motor 3 can drive the support plate 2 to deflect. Since the femoral head is cylindrical, the deflection of the support plate 2 can drive the rotating mechanism 4 and the displacement drilling mechanism 5 to deflect, which in turn drives the drill to deflect, so that the drill and the femoral head are always in a perpendicular state, indirectly ensuring the accuracy of drilling the femoral head.

[0034] Specifically, scales are installed on the upper surfaces of the support plate 2 and the rotating plate 41.

[0035] The scale installed on its support plate 2 and rotating plate 41 can drive the drill to move more accurately, thereby drilling the femoral head more accurately.

[0036] Specifically, a rotating bead 571 is installed in the inner cavity of the fixing hole 57, and a fixing plate is attached to one end of the rotating bead 571. One end of the fixing plate is fixedly connected to one end of the screw 572, and the outer wall of the screw 572 is threadedly connected to the inner cavity of the displacement block 52.

[0037] The drill is fixed by a rotating bead 571 installed inside the fixing hole 57. The inner cavity of the fixing hole 57 is tapered, which increases the flexibility of the drill in drilling the femoral head. When it is necessary to fix the rotating bead 571, the rotation of the screw 572 causes the fixing plate to overlap with the rotating bead 571, thereby preventing the rotating bead 571 from being fixed and preventing the rotating bead 571 from rotating. This increases the accuracy and stability of drilling the femoral head.

[0038] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An adjustable drilling guide device for femoral head modeling experiments, comprising a fixing frame (1), characterized in that: The upper end of the fixed frame (1) is rotatably connected to both sides of the support plate (2), and the inner cavity of the support plate (2) is rotatably connected to the rotating mechanism (4). The rotating mechanism (4) includes a rotating plate (41), the outer wall of the rotating plate (41) is rotatably connected to the inner cavity of the support plate (2), and a displacement drilling mechanism (5) is installed on the upper end of the rotating plate (41).

2. The adjustable drilling guide device for femoral head modeling experiment according to claim 1, characterized in that: The displacement drilling mechanism (5) includes a through groove (51), a displacement block (52), a limiting hole (53), a fixing rod (54), a spring (55), a push plate (56), and a fixing hole (57). The through groove (51) is opened on the upper end face of the rotating plate (41). The outer wall of the displacement block (52) is engaged with the inner cavity of the through groove (51). The limiting hole (53) is opened in the inner cavity of the through groove (51). One end of the fixing rod (54) is engaged with the inner cavity of the displacement block (52) and with the inner cavity of the limiting hole (53). One end of the spring (55) is fixedly connected to one end of the inner cavity of the displacement block (52), and the other end of the spring (55) is fixedly connected to the other end of the fixing rod (54). The lower end of the push plate (56) penetrates the inner cavity of the displacement block (52) and is fixedly connected to one end of the fixing rod (54). The fixing hole (57) is opened on the upper end face of the displacement block (52).

3. The adjustable drilling guide device for femoral head modeling experiment according to claim 1, characterized in that: The rotating mechanism (4) includes a first gear (42), a second motor (43) and a drive gear (44). The first gear (42) is fixedly connected to the outer wall of the rotating plate (41) at one end close to each other. The second motor (43) is fixedly connected to the upper end face of the support plate (2) at one end. The output end of the second motor (43) passes through the upper end face of the support plate (2) and extends to the inner cavity of the support plate (2). The upper end of the drive gear (44) is fixedly connected to the output end of the second motor (43), and the outer wall of the drive gear (44) meshes with the first gear (42).

4. The adjustable drilling guide device for femoral head modeling experiment according to claim 1, characterized in that: One end of the fixed frame (1) is fixedly connected to one end of the first motor (3), and the output end of the first motor (3) is fixedly connected to one side of the support plate (2).

5. The adjustable drilling guide device for femoral head modeling experiment according to claim 1, characterized in that: A scale is installed on the upper surface of the support plate (2) and the rotating plate (41).

6. The adjustable drilling guide device for femoral head modeling experiment according to claim 2, characterized in that: The inner cavity of the fixing hole (57) is equipped with a rotating bead (571), and one end of the rotating bead (571) is connected to a fixing plate. One end of the fixing plate is fixedly connected to one end of the screw (572), and the outer wall of the screw (572) is threadedly connected to the inner cavity of the displacement block (52).

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