Model device for simulating deep brain stimulation electrode implantation operation

Abstract

The invention belongs to the technical field of medical model devices, particularly relates to a model device for simulating deep brain stimulation electrode implantation operation, and aims to solve the problems that an existing model device cannot conveniently scan the head for modeling, the working difficulty is increased, and operation and observation cannot be performed at any time. Four supporting legs are arranged at the bottom of the working plate, and a transverse plate is fixedly mounted at the front end of the working plate; the head supporting mechanism is mounted at the top of the transverse plate and used for limiting and supporting the head of the model; the display mechanism is arranged on the side of the working plate and is used for observing during simulation operation; and the head scanning mechanism is vertically arranged on the transverse plate in a sliding manner. An electrode needing to be implanted in the head can be marked, the operation track is simulated, electrode slice implantation can be carried out while observation is carried out, comparison with an initially planned track is carried out, and the accuracy of electrode slice implantation is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical model devices, and in particular to a model device for simulating deep brain stimulation electrode implantation operations. Background Art

[0002] The subthalamic nucleus is an important structure in the human brain related to Parkinson's disease and other involuntary movements, and belongs to the field of functional neurosurgery. The current related surgeries mainly rely on a positioning iron frame with coordinate information, which is fixed on the patient's head. After the coordinates are adjusted, the patient takes the iron frame to do CT or MRI (magnetic resonance imaging). Then, combined with the image data and the recorded coordinate information, microelectrodes are implanted into the patient's brain at the subthalamic nucleus for deep electrophysiological stimulation of the subthalamic nucleus (STN-DBS). According to clinical feedback, although there are now stereotactic iron frames, this approach is actually equivalent to blind insertion, which requires doctors to have very rich experience or, in a relatively lucky case, be able to insert the electrode into the target site at one time. Otherwise, the electrode will not be inserted and will have to be moved, requiring repeated attempts. This process not only prolongs the operation time and increases the difficulty of the operation, but also increases the risk of the operation. The accuracy of deep brain stimulation (DBS) electrode implantation directly determines the final therapeutic effect of deep brain stimulation in patients with Parkinson's disease. Since the subthalamic nucleus is small in size and has unclear boundaries, the intraoperative MRI image resolution is low and the electrode artifacts are large, directly inserting electrodes based on image data will not only be difficult in operation, but the accuracy will also be greatly affected. If the subthalamic nucleus can be reconstructed in three dimensions and then printed out in combination with brain tissue, not only can the location of the nucleus and the surrounding spatial structure be intuitively seen, but preoperative electrode insertion simulation exercises can also be performed in a model with brain tissue, so that doctors can have a clear idea before the operation. In addition, preoperative simulation can exercise "feel", reduce the probability of blind insertion, save operation time, and reduce surgical risks; The patent document with the announcement number CN211979993U relates to a model device for simulating the implantation operation of deep brain stimulation electrodes. The model device includes a cranial brain model, a pressure sensor, a data processing module and an output device. The cranial brain model includes a subthalamic nucleus, the pressure sensor is arranged on the subthalamic nucleus, the pressure sensor is connected to the data processing module, and the data processing module is electrically connected or signal-connected to the output device located outside the cranial brain model. The model device can accurately simulate the cranial brain structure of the patient.

[0003] The existing model device is not convenient for scanning the head for modeling, which increases the difficulty of the work and cannot be operated and observed at all times. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the existing model device, which is inconvenient to scan the head for modeling, increases the difficulty of work, and cannot perform operation and observation at all times, and proposes a model device for simulating the deep brain stimulation electrode implantation operation.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A model device for simulating deep brain stimulation electrode implantation operation, comprising: A working plate, wherein four supporting legs are arranged at the bottom of the working plate, and a transverse plate is fixedly mounted at the front end of the working plate; The head support mechanism is installed on the top of the transverse plate and is used to provide limited support for the model head; A display mechanism, arranged on the side of the working board, for observation during simulation operation; A head scanning mechanism is vertically slidably arranged on the transverse plate, and is used to scan the model head and transmit the scanning result to the display mechanism; Two X-ray mechanisms are symmetrically slidably arranged on the transverse plate and are used to perform X-ray exploration of the model's skull when implanting electrodes; The transmission mechanism is installed at the bottom of the transverse plate and is used to control the alternating use of the head scanning mechanism and the two X-ray mechanisms.

[0006] The head support mechanism includes a support vertical plate, which is fixedly installed at the top center position of the horizontal plate. An arc plate is fixedly installed on the top of the support vertical plate to support the head. A cotton pad is arranged on the inner side of the arc plate. The head is placed in the arc plate and positioned by the arc plate to ensure the stability of medical treatment.

[0007] The display mechanism includes a base, four rollers are arranged at the bottom of the base, an electric telescopic rod is installed on the top of the base, a support frame is fixedly installed on the top of the electric telescopic rod, a computer monitor is arranged in the support frame, and a plurality of wiring ports are arranged on the rear side of the computer monitor; the computer monitor is used to display the internal structure of the skull, mark the position of the implanted electrode sheet, and the implantation trajectory of the electrode sheet.

[0008] A wiring hole is provided on the rear side of the support frame, and the rear side of the computer monitor extends to the outside of the wiring hole. Screw rods are threadedly connected to both sides of the support frame, and handles are installed at both ends of the two screw rods. The computer monitor is fixed in the support frame by the two screw rods. Two first reinforcement rods are arranged between the bottom side of the electric telescopic rod and the base, and a second reinforcement rod is arranged between the output end of the electric telescopic rod and the support frame; the electric telescopic rod controls the computer monitor to adjust its height.

[0009] The head scanning mechanism includes a vertical plate, a vertical hole is formed on the horizontal plate, the vertical plate is slidably connected to the inner wall of the vertical hole, a notch is formed on the top of the vertical plate, a servo motor is arranged in the notch, a bending rod is installed on the output shaft of the servo motor, and an X-ray scanner is arranged on the inner side of the bending rod; the servo motor drives the bending rod to rotate less than or equal to 360 degrees, and the bending rod drives the X-ray scanner to scan the model head.

[0010] Screws are threadedly connected on both sides of the vertical plate, and twist handles are fixedly installed on the outer ends of the two screws. The two screws are used to fix the servo motor. Limiting grooves are provided on both sides of the vertical plate, and limiting blocks are fixedly installed on the inner walls of the two sides of the vertical hole. The two limiting blocks are slidably connected to the inner walls of the two limiting grooves to ensure the vertical sliding of the vertical plate.

[0011] The two X-ray mechanisms include two mounting plates, the top of the transverse plates are provided with two mounting holes, the inner sides of the two mounting plates are provided with X-light boards, the two X-light boards are symmetrically arranged, both sides of the two mounting plates are provided with slide grooves, the inner walls of both sides of the two mounting holes are fixedly installed with sliders, the sliders are slidably connected to the inner walls of the slide grooves, and the tops of the two mounting plates are fixedly installed with dust baffles; the two mounting plates drive the two X-light boards to move upward and are located on both sides of the skull, so that the marks and trajectories of the skull can be scanned and displayed on a computer monitor.

[0012] The transmission mechanism includes a transmission shaft, two bearing plates are fixedly installed at the bottom of the horizontal plate, the transmission shaft is rotatably installed on the bearing plate, a first gear is fixedly installed at the center position of the transmission shaft, and second gears are fixedly installed at both ends of the transmission shaft, a first rack groove is opened at the inner center position of the vertical plate, a first rack is arranged in the first rack groove, the first gear is meshed with the first rack, second rack grooves are opened on the outer sides of the two mounting plates, second racks are arranged in the two second rack grooves, the two second gears are meshed with the two second racks, a stepper motor is fixedly installed at the bottom of the horizontal plate, a driving gear is installed on the output shaft of the stepper motor, and the driving gear is meshed with the first gear.

[0013] In the present invention, the beneficial effects of the model device for simulating deep brain stimulation electrode implantation operation are: This solution places the humanoid model on the top of the work board so that the head is placed inside the curved board. The curved board is used for positioning to ensure the stability of medical treatment. The servo motor drives the bending rod to rotate less than or equal to 360 degrees. The bending rod drives the X-ray scanner to scan the model's head. The scanning results are sent to the computer monitor to mark the electrodes that need to be implanted inside the head and simulate the surgical trajectory. In order not to interfere with the operation, the present solution needs to retract the head scanning mechanism, start the stepper motor to drive the driving gear to rotate, the driving gear meshes with the first rack to drive the vertical plate to move downward, the vertical plate drives the servo motor and the bending rod to move downward, and at the same time the driving gear drives the transmission shaft to rotate, the transmission shaft drives the two second gears to rotate, the two second gears mesh with the two second racks and drive the two mounting plates to move upward, the two mounting plates drive the two X-light boards to move upward and are located on both sides of the skull, the marks and trajectories of the skull can be scanned and displayed on a computer monitor, during operation, the trajectory of the electrode placement can also be scanned and displayed by the two X-light boards, the trajectory of the manually placed electrode is displayed on the computer monitor and compared with the initially planned trajectory, so as to improve the accuracy of the electrode implantation; The present invention can mark the electrodes that need to be implanted inside the skull and simulate the surgical trajectory. The electrode implantation can be performed while being observed and compared with the initially planned trajectory, thereby improving the accuracy of the electrode implantation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a model device for simulating deep brain stimulation electrode implantation operation proposed by the present invention; Figure 2 This is a bottom-up structural schematic diagram of a model device for simulating deep brain stimulation electrode implantation operation proposed by the present invention; Figure 3 A schematic diagram of the side structure of a model device for simulating deep brain stimulation electrode implantation operation proposed by the present invention; Figure 4 This is a schematic diagram of the structure of the present invention without the display mechanism and the protective shell; Figure 5 This is a schematic diagram of the structure of the transverse plate and the head support mechanism proposed by the present invention; Figure 6 This is a rear view structural schematic diagram of the transverse plate, head scanning mechanism, two X-ray mechanisms and transmission mechanism proposed by the present invention; Figure 7 This is a schematic diagram of the structure of the head scanning mechanism, two X-ray mechanisms and the transmission mechanism proposed by the present invention; Figure 8 This is a schematic diagram of the head scanning mechanism, two X-ray mechanisms and the transmission mechanism as viewed from the front; Fig. 9 The present invention proposes Figure 8 A schematic diagram of a rear-view structure; Fig.10 A schematic diagram of the structure of the vertical plate and its related parts proposed by the present invention; Fig.11A rear structural schematic diagram of the vertical plate and related parts proposed by the present invention; Fig.12 It is a structural schematic diagram of the display mechanism proposed by the present invention; Fig.13 A schematic diagram of the structure of a computer display proposed by the present invention; Fig.14 The present invention proposes Fig.13 A rear view structural diagram of ; Fig.15 This is a schematic diagram of the three-dimensional structure of the protective shell proposed by the present invention.

[0015] In the figure: 1. working plate; 11. supporting leg; 12. horizontal plate; 13. mounting hole; 14. sliding block; 15. vertical hole; 16. stop block; 2. head supporting mechanism; 21. supporting vertical plate; 22. arc plate; 23. cotton pad; 3. display mechanism; 31. base; 32. electric telescopic rod; 33. computer display; 331. wiring port; 34. supporting frame; 35. wiring hole; 36. screw rod; 37. handle; 38. first reinforcing rod; 39. second reinforcing rod; 310. roller; 4. head scanning mechanism; 41. vertical Plate; 42, bending rod; 421, X-scanner; 43, limit slot; 44, first rack slot; 45, first rack; 46, notch; 47, servo motor; 48, screw; 49, twist handle; 5, protective shell; 51, wiring through hole; 6, X-ray mechanism; 61, mounting plate; 62, X-ray lamp board; 63, slide slot; 64, second rack slot; 65, second rack; 66, dust shield; 7, transmission mechanism; 71, stepper motor; 72, drive gear; 73, transmission shaft; 74, bearing plate; 75, second gear; 76, first gear. DETAILED DESCRIPTION

[0016] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all of the embodiments.

[0017] Embodiment 1, refer to Figure 1-Figure 14 , a model device for simulating deep brain stimulation electrode implantation operation, comprising: A working plate 1, wherein four supporting legs 11 are arranged at the bottom of the working plate 1, and a transverse plate 12 is fixedly mounted at the front end of the working plate 1; The head support mechanism 2 is installed on the top of the transverse plate 12 and is used to provide position-limiting support for the model head; A display mechanism 3, arranged on the side of the working board 1, for observation during simulation operation; The head scanning mechanism 4 is vertically slidably disposed on the transverse plate 12, and is used to scan the model head and transmit the scanning result to the display mechanism 3; Two X-ray mechanisms 6 are symmetrically slidably arranged on the transverse plate 12, and are used to perform X-ray exploration on the head of the model when the electrode is implanted; The transmission mechanism 7 is installed at the bottom of the transverse plate 12 and is used to control the alternating use of the head scanning mechanism 4 and the two X-ray mechanisms 6.

[0018] Reference Figure 5 In this embodiment, the head support mechanism 2 includes a support vertical plate 21, which is fixedly installed at the top center position of the horizontal plate 12. An arc plate 22 is fixedly installed on the top of the support vertical plate 21 for supporting the head. A cotton pad 23 is arranged on the inner side of the arc plate 22. The head is placed in the arc plate 22 and positioned by the arc plate 22 to ensure the stability of medical treatment.

[0019] Reference Fig.12 , Fig.13 , Fig.14 In this embodiment, the display mechanism 3 includes a base 31, four rollers 310 are arranged at the bottom of the base 31, an electric telescopic rod 32 is installed on the top of the base 31, a support frame 34 is fixedly installed on the top of the electric telescopic rod 32, a computer display 33 is arranged in the support frame 34, and a plurality of wiring ports 331 are arranged on the rear side of the computer display 33; the computer display 33 is used to display the internal structure of the skull, mark the position of the implanted electrode sheet, and the implantation trajectory of the electrode sheet.

[0020] Reference Fig.12 , Fig.13 , Fig.14 In this embodiment, a wiring hole 35 is provided on the rear side of the support frame 34, and the rear side of the computer display 33 extends to the outside of the wiring hole 35. Screw rods 36 are threadedly connected to both sides of the support frame 34, and handles 37 are installed at both ends of the two screw rods 36. The computer display 33 is fixed in the support frame 34 by the two screw rods 36. Two first reinforcement rods 38 are provided between the bottom side of the electric telescopic rod 32 and the base 31, and a second reinforcement rod 39 is provided between the output end of the electric telescopic rod 32 and the support frame 34; the electric telescopic rod 32 controls the computer display 33 to adjust its height.

[0021] Reference Figure 7 , Fig. 9 , Fig.10 , Fig.11In this embodiment, the head scanning mechanism 4 includes a vertical plate 41, a vertical hole 15 is opened on the horizontal plate 12, the vertical plate 41 is slidably connected to the inner wall of the vertical hole 15, a notch 46 is opened on the top of the vertical plate 41, a servo motor 47 is arranged in the notch 46, a bending rod 42 is installed on the output shaft of the servo motor 47, and an X-ray scanner 421 is arranged on the inner side of the bending rod 42; the servo motor 47 drives the bending rod 42 to rotate less than or equal to 360 degrees, and the bending rod 42 drives the X-ray scanner 421 to scan the model head.

[0022] Reference Figure 7 , Fig. 9 , Fig.10 , Fig.11 In this embodiment, screws 48 are threadedly connected on both sides of the vertical plate 41, and twist handles 49 are fixedly installed on the outer ends of the two screws 48. The two screws 48 are used to fix the servo motor 47. Limiting grooves 43 are provided on both sides of the vertical plate 41, and limiting blocks 16 are fixedly installed on the inner walls of both sides of the vertical hole 15. The two limiting blocks 16 are slidably connected to the inner walls of the two limiting grooves 43; ensuring the vertical sliding of the vertical plate 41.

[0023] Reference Figure 6 , Figure 7 , Figure 8 In this embodiment, the two X-ray mechanisms 6 include two mounting plates 61, two mounting holes 13 are provided on the top of the transverse plate 12, and X-ray light boards 62 are provided on the inner sides of the two mounting plates 61. The two X-ray light boards 62 are symmetrically arranged, and slide grooves 63 are provided on both sides of the two mounting plates 61. Slide blocks 14 are fixedly installed on the inner walls of both sides of the two mounting holes 13, and the slide blocks 14 are slidably connected to the inner walls of the slide grooves 63. Dust baffles 66 are fixedly installed on the tops of the two mounting plates 61; the two mounting plates 61 drive the two X-ray light boards 62 to move upward and are located on both sides of the skull, so that the marks and trajectories of the skull can be scanned and displayed on the computer monitor 33.

[0024] Reference Figure 6 , Figure 7 , Figure 8In this embodiment, the transmission mechanism 7 includes a transmission shaft 73, two bearing plates 74 are fixedly installed at the bottom of the horizontal plate 12, the transmission shaft 73 is rotatably installed on the bearing plate 74, a first gear 76 is fixedly installed at the center position of the transmission shaft 73, and second gears 75 are fixedly installed at both ends of the transmission shaft 73. A first rack groove 44 is opened at the inner center position of the vertical plate 41, a first rack 45 is arranged in the first rack groove 44, and the first gear 76 is meshed with the first rack 45. Second rack grooves 64 are opened on the outer sides of the two mounting plates 61, and second racks 65 are arranged in the two second rack grooves 64. The two second gears 75 are meshed with the two second racks 65. A stepping motor 71 is fixedly installed at the bottom of the horizontal plate 12, and a driving gear 72 is installed on the output shaft of the stepping motor 71, and the driving gear 72 is meshed with the first gear 76.

[0025] Working mode: When in use, the power supply and the computer display 33 are turned on to control the electrical appliances. The prior art will not be described in detail here. The humanoid model is placed on the top of the working board 1 so that the head is placed in the arc plate 22. The arc plate 22 is used for positioning to ensure the stability of medical treatment. The servo motor 47 drives the bending rod 42 to rotate less than or equal to 360 degrees. The bending rod 42 drives the X-scanner 421 to scan the model head. The scanning result is sent to the computer display 33. The electrodes to be implanted in the head are marked and the surgical trajectory is simulated. In order not to interfere with the surgery, the head scanning mechanism 4 needs to be folded up, and the stepper motor 71 is started to drive the driving gear 72 to rotate. The driving gear 72 is engaged with the first rack 45 to drive The vertical plate 41 moves downward, and the vertical plate 41 drives the servo motor 47 and the bending rod 42 to move downward. At the same time, the driving gear 72 drives the transmission shaft 73 to rotate, and the transmission shaft 73 drives the two second gears 75 to rotate. The two second gears 75 mesh with the two second racks 65 and drive the two mounting plates 61 to move upward. The two mounting plates 61 drive the two X-light boards 62 to move upward and are located on both sides of the skull. The marks and trajectories of the skull can be scanned and displayed on the computer monitor 33. During operation, the trajectory of the electrode placement can also be scanned and displayed by the two X-light boards 62. The trajectory of the manually placed electrode is displayed on the computer monitor 33 and compared with the initially planned trajectory to improve the accuracy of electrode placement.

[0026] Example 2, refer to Fig.15 The rest of the embodiment 2 is the same as the embodiment 1, except that a protective shell 5 is fixedly provided at the bottom of the transverse plate 12, and a plurality of wiring through holes 51 are provided on the outer side of the protective shell 5, so that the electrical appliances at the bottom of the transverse plate 12 are protected by the protective shell 5. The present application includes all the structural shapes, sizes and materials of the embodiment 1, which can be selected and adjusted to meet the specific usage conditions. The accompanying drawings are all schematic structural diagrams, and the specific actual sizes can be appropriately adjusted.

[0027] The above description is only a preferred specific implementation manner of this embodiment, but the protection scope of this embodiment is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims

1. A model device for simulating deep brain stimulation electrode implantation operation, characterized in that: include: A working plate (1), wherein four supporting legs (11) are arranged at the bottom of the working plate (1), and a transverse plate (12) is fixedly mounted at the front end of the working plate (1); A head support mechanism (2) is mounted on the top of the transverse plate (12) and is used to provide position-limiting support for the model head; A display mechanism (3) is arranged on the side of the working plate (1) and is used for observation during simulation operation; A head scanning mechanism (4) is vertically slidably disposed on the transverse plate (12) and is used to scan the model head and transmit the scanning result to the display mechanism (3); Two X-ray mechanisms (6) are symmetrically slidably arranged on the transverse plate (12) and are used to perform X-ray exploration of the model's skull when the electrodes are implanted; The transmission mechanism (7) is installed at the bottom of the transverse plate (12) and is used to control the alternating use of the head scanning mechanism (4) and the two X-ray mechanisms (6).

2. A model device for simulating deep brain stimulation electrode implantation operation according to claim 1, characterized in that: The head support mechanism (2) comprises a support vertical plate (21), wherein the support vertical plate (21) is fixedly mounted at the top center position of the transverse plate (12), and an arc-shaped plate (22) is fixedly mounted on the top of the support vertical plate (21) for supporting the head, and a cotton pad (23) is arranged on the inner side of the arc-shaped plate (22).

3. A model device for simulating deep brain stimulation electrode implantation operation according to claim 1, characterized in that: The display mechanism (3) comprises a base (31), the bottom of the base (31) is provided with four rollers (310), the top of the base (31) is provided with an electric telescopic rod (32), the top of the electric telescopic rod (32) is fixedly provided with a support frame (34), a computer display (33) is provided in the support frame (34), and a plurality of wiring ports (331) are provided at the rear side of the computer display (33).

4. A model device for simulating deep brain stimulation electrode implantation operation according to claim 3, characterized in that: A wiring hole (35) is provided on the rear side of the support frame (34), and the rear side of the computer display (33) extends to the outside of the wiring hole (35). Screw rods (36) are threadedly connected to both sides of the support frame (34), and handles (37) are installed at both ends of the two screw rods (36). The computer display (33) is fixed in the support frame (34) by the two screw rods (36).

5. A model device for simulating deep brain stimulation electrode implantation operation according to claim 3, characterized in that: Two first reinforcement rods (38) are arranged between the bottom side of the electric telescopic rod (32) and the base (31), and a second reinforcement rod (39) is arranged between the output end of the electric telescopic rod (32) and the support frame (34).

6. A model device for simulating deep brain stimulation electrode implantation operation according to claim 1, characterized in that: The head scanning mechanism (4) comprises a vertical plate (41), a vertical hole (15) is formed on the horizontal plate (12), the vertical plate (41) is slidably connected to the inner wall of the vertical hole (15), a notch (46) is formed on the top of the vertical plate (41), a servo motor (47) is arranged in the notch (46), a bending rod (42) is mounted on the output shaft of the servo motor (47), and an X-ray scanner (421) is arranged on the inner side of the bending rod (42).

7. A model device for simulating deep brain stimulation electrode implantation operation according to claim 6, characterized in that: Screw rods (48) are threadedly connected to both sides of the vertical plate (41), and twist handles (49) are fixedly installed on the outer ends of the two screw rods (48). The two screw rods (48) are used to fix the servo motor (47). Limiting grooves (43) are provided on both sides of the vertical plate (41), and limiting blocks (16) are fixedly installed on the inner walls of both sides of the vertical hole (15). The two limiting blocks (16) are slidably connected to the inner walls of the two limiting grooves (43).

8. A model device for simulating deep brain stimulation electrode implantation operation according to claim 1, characterized in that: The two X-ray mechanisms (6) include two mounting plates (61), the top of each of the transverse plates (12) is provided with two mounting holes (13), the inner sides of each of the two mounting plates (61) are provided with an X-ray lamp board (62), the two X-ray lamp boards (62) are symmetrically arranged, both sides of each of the two mounting plates (61) are provided with a slide groove (63), the inner walls of both sides of the two mounting holes (13) are fixedly provided with a slider (14), the slider (14) is slidably connected to the inner wall of the slide groove (63), and the top of each of the two mounting plates (61) is fixedly provided with a dust baffle (66).

9. A model device for simulating deep brain stimulation electrode implantation operation according to claim 8, characterized in that: The transmission mechanism (7) comprises a transmission shaft (73), two bearing plates (74) are fixedly mounted at the bottom of the transverse plate (12), the transmission shaft (73) is rotatably mounted on the bearing plates (74), a first gear (76) is fixedly mounted at the center of the transmission shaft (73), and second gears (75) are fixedly mounted at both ends of the transmission shaft (73), a first rack groove (44) is opened at the center of the inner side of the vertical plate (41), a first rack (45) is arranged in the first rack groove (44), the first gear (76) is meshed with the first rack (45), the outer sides of the two mounting plates (61) are opened with second rack grooves (64), the two second rack grooves (64) are arranged with second racks (65), and the two second gears (75) are meshed with the two second racks (65).

10. A model device for simulating deep brain stimulation electrode implantation operation according to claim 9, characterized in that: A stepper motor (71) is fixedly mounted on the bottom of the transverse plate (12), a driving gear (72) is mounted on the output shaft of the stepper motor (71), and the driving gear (72) is meshed with the first gear (76).

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