Multifunctional head fixator for neurosurgery department

Abstract

The invention belongs to the technical field of head fixers, and particularly relates to a multifunctional head fixator for the neurosurgery department. Comprising a support, a supporting transverse rod is arranged at the lower end of the support, a connecting rod adjusting mechanism is connected to the supporting transverse rod, a head supporting mechanism is arranged at the end of the adjusting mechanism, a supporting plate is arranged on the side wall of the support, the supporting plate comprises a transverse plate and a vertical plate which are integrally formed, and a driving mechanism is arranged on the support and the supporting plate. A neck fixing and adjusting mechanism driven by a driving mechanism is further arranged on the side wall of the support. By arranging the support and the connecting rod adjusting mechanism, the head supporting mechanism can be adjusted to the proper position and angle, meanwhile, a gasket can be lifted or lowered to the proper position, and a patient can have better comfort. In addition, a U-shaped head frame is adopted for fixing the side face of the brain, and sight shielding in the surgical operation process is reduced.

Description

Technical Field

[0001] This invention belongs to the field of head fixation technology, specifically relating to a multifunctional head fixation device for neurosurgery. Background Technology

[0002] During neurosurgical procedures, the patient's head is typically positioned to allow the surgeon to better locate the correct position and gain a wider field of vision for the operation. Furthermore, the patient's head and neck may need adjustment and fixation as needed during the procedure. This facilitates the use of surgical instruments such as forceps and endoscopes, provides the surgeon with better posture and a wider field of vision, and allows for adjustments to the patient's head and neck position using equipment, eliminating the need for manual intervention (as the patient is under anesthesia and lacks voluntary control).

[0003] Typically, a U-shaped head frame is used for fixation. This only involves placing the patient's head on the head frame for fixation, and the angle and position of fixation are fixed, without the ability to adjust the height or angle.

[0004] To address this issue, patent number 201921439301.9, entitled "A Multifunctional Head Fixator for Neurosurgery," comprises a mounting base, an electric push rod, and a screw. The upper end of the mounting base is connected to a base plate via the electric push rod, and a receiving plate is fixed to the top of the base plate. A support plate is provided on the upper end of the support plate, and an auxiliary support rod is fixed to the top edge of the support plate, with its end connected to the bottom of the support plate. A bracket is fixed to the top edge of the mounting base, and a screw is threadedly connected to the middle of the bracket. A movable block is mounted on one end of the screw, and a guide ball is fixed to one end of the movable block. The guide ball is located within a guide groove, which is located inside the clamping plate. A telescopic rod connects the clamping plate and the bracket. This multifunctional head fixator for neurosurgery clamps and fixes the patient's head in three directions, allowing adjustment of the patient's head height and real-time fixation during height adjustment.

[0005] However, this neurosurgical multifunctional head fixator still has the following problems:

[0006] 1. This device can only support the patient's head and cannot support the patient's neck. Moreover, the head support structure has a certain height, which will inevitably create a height difference between the head and neck, thus causing discomfort to the patient's neck.

[0007] 2. This device is not well adapted for neurosurgical procedures on the head. The support and fixation structures on the bottom and sides fit closely to the patient's head over a large area, which reduces the surgical space on the patient's head and affects the operation of surgical instruments, which is actually detrimental to the operation.

[0008] 3. This device cannot fix the patient's neck, nor can it rotate or adjust the patient's neck.

[0009] 4. This device cannot adjust the patient's head vertically, horizontally, or laterally. Summary of the Invention

[0010] The purpose of this invention is to provide a multifunctional head fixation device for neurosurgery. By setting up a bracket and a linkage adjustment mechanism, the head support mechanism can be adjusted to a suitable position and angle, and the pads can be raised or lowered to a suitable position, so as to give the patient better comfort.

[0011] To achieve the above-mentioned technical effects, the technical solution adopted by the present invention is as follows:

[0012] A multifunctional head fixation device for neurosurgery includes a bracket with a supporting crossbar at its lower end. A linkage adjustment mechanism is connected to the supporting crossbar, and a head support mechanism is provided at the end of the adjustment mechanism. A support plate is provided on the side wall of the bracket, and the support plate includes an integrally formed horizontal plate and a vertical plate. A driving mechanism is provided on the horizontal plate, and a neck fixation adjustment mechanism driven by the driving mechanism is also provided on the side wall of the bracket.

[0013] Preferably, the drive mechanism includes a motor, a first bevel gear, a second bevel gear, and an end gear. The motor is mounted on the side wall of the bracket, and the other end of the motor's output shaft is mounted on the vertical plate. The first bevel gear is mounted on the output shaft and meshes with the second bevel gear. A connecting shaft is mounted on the second bevel gear, and the other end of the connecting shaft is connected to a disc. The outer wall of the disc has a concave structure, and an elastic component is abuttingly connected in the concave structure of the outer wall of the disc. The elastic component is connected to a rotating rod, and the end of the rotating rod is fixedly connected to the end gear.

[0014] Preferably, the elastic component includes a slip ring, a spring, a hinge rod, and an I-beam. The rotating rod is fixedly connected to the I-beam. A sliding groove is provided on the I-beam, and a sliding block is slidably disposed in the sliding groove. The hinge rod is hinged between the sliding block and the slip ring. The spring is disposed on the rotating rod and is located outside the slip ring.

[0015] Preferably, the rotating rod is provided with a limiting frame, which is integrally formed by a crossbar, a first limiting plate, a second limiting plate, and a locking bar. The first limiting plate and the second limiting plate are slidably disposed on the rotating rod and are connected at the ends of the spring.

[0016] Preferably, a limiting block is provided on the horizontal plate, a limiting arc groove is formed on the limiting block, an arc plate is slidably arranged in the limiting arc groove, an internal toothed rack is provided on the concave surface of the arc toothed plate, a drive gear is provided on the output shaft, the drive gear meshes with the arc toothed plate, and a fixing strip is fixedly connected to the upper part of the arc toothed plate.

[0017] Preferably, the neck fixing and adjusting mechanism includes a guide cylinder, an arc-shaped block, and a moving strip. A support rod is provided on the side wall of the bracket, and the other end of the support rod is fixedly mounted on a vertical plate. The fixing strip is slidably mounted on the support rod. Two guide rods are provided on the side wall of the support rod. The moving strip is slidably mounted on the support rod and the guide rods. Grooves are formed on the lower surfaces of both ends of the moving strip. Several guide strips are arranged horizontally in the grooves. A hinge rod is slidably mounted on the guide strip. A rack is connected to the lower end of the hinge rod. The rack meshes with an end gear, and a mounting plate is provided on the gear. The upper end of the mounting plate is slidably connected to the rack. A connecting spring is also provided between the upper end face of the rack and the lower end face of the moving strip. The arc-shaped block is slidably mounted on the surface of the moving strip, and the guide cylinder drives the arc-shaped block to slide.

[0018] Preferably, a cylinder is provided directly in front of the moving strip, and the end of the piston rod of the cylinder is provided on the side wall of the vertical plate. The cylinder is connected in sequence to a fixed air pipe and a flexible air pipe. The flexible air pipe is connected to an arc-shaped block, and an airbag pad communicating with the flexible air pipe is provided on the surface of the arc-shaped block.

[0019] Preferably, the head support mechanism includes a U-shaped head frame, with electrode needles rotatably mounted on the two arms of the U-shaped head frame. The middle part of the U-shaped head frame is connected to the output shaft via a rotating connecting rod. A U-shaped limiting seat is provided on the U-shaped head frame, and a lifting electric cylinder is provided inside the U-shaped limiting seat. A triangular bracket is provided on the top of the lifting electric cylinder, and a pad is provided on the top of the triangular bracket. The pad is connected to the inflatable bladder.

[0020] Preferably, the linkage adjustment mechanism includes a first rod, a second rod, and a third rod. The first rod is rotatably mounted on the support crossbar. The first rod and the second rod are connected by a first screw. The end of the second rod is connected to a rotating block by a second screw. The upper end face of the rotating block is connected to the third rod via a rotating rod. The third rod is rotatably connected to the U-shaped head frame.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. A support frame is installed at the front of the existing operating table to facilitate neurosurgery on the patient's brain. In addition, the existing U-shaped head frame is used for fixation of the side of the brain to reduce obstruction of vision during the operation.

[0023] 2. The device is equipped with a linkage adjustment mechanism and a head support mechanism. The linkage adjustment mechanism includes three rods (rod 1, rod 2, and rod 3), a rotating rod, and a screw. It allows for fine-tuning of the head support mechanism by moving it left and right. Rods 1 and 2 can be rotated for adjustment. After adjustment, tighten the screw. Then adjust rod 2 and the rotating block to the appropriate angle and tighten the screw. Finally, rod 3 and the rotating block are rotated to the desired position and stopped. Tightening is not necessary at this point; they are secured by friction, facilitating subsequent adjustments. After this series of operations, the head support mechanism can be rotated to a suitable angle to facilitate surgery.

[0024] 3. Equipped with a lifting cylinder and a pad, the height of the pad can be adjusted to a suitable height by operating the lifting cylinder. At the same time, the pad is inflated to form an arc shape, which provides a more comfortable contact feel and stability.

[0025] 4. Equipped with a drive mechanism, the cervical fixation adjustment mechanism rotates through a linkage, simultaneously moving it back and forth. This movement further activates a cylinder, filling the surface of the arc-shaped block with gas for a tighter fit around the patient's neck. Additionally, a guide electric cylinder drives the arc-shaped block to move left and right, resulting in a more stable and secure fixation. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0027] In the attached diagram:

[0028] Figure 1 This is a schematic diagram of the main structure of the head fixation device of the present invention;

[0029] Figure 2 This is a bottom view of the fixture of the present invention.

[0030] Figure 3 This is a top view of the fixture of the present invention;

[0031] Figure 4 This is a schematic diagram of the fixator structure of the present invention without a neck fixation adjustment mechanism;

[0032] Figure 5 for Figure 4 Enlarged view of part A in the middle;

[0033] Figure 6 This is a structural schematic diagram of the limit frame and the drive mechanism;

[0034] Figure 7 This is a schematic diagram of the structure of the elastic component;

[0035] Figure 8 This is a schematic diagram of the arc-shaped block structure;

[0036] Figure 9 This is a schematic diagram of the linkage adjustment mechanism;

[0037] Figure 10 This is a schematic diagram of the head support mechanism;

[0038] Figure 11 This is a schematic diagram of the arc-shaped toothed plate.

[0039] Figure 12 This is a structural schematic diagram of the support plate;

[0040] Figure 13 This is a schematic diagram of the limit frame structure;

[0041] Figure 14 This is a side-view structural diagram of the fixator of the present invention;

[0042] Figure 15 for Figure 14 Enlarged view of part B;

[0043] Figure 16 This is a schematic diagram of the hinge rod of the present invention.

[0044] The components are as follows: 1. Bracket, 2. Moving bar, 3. Supporting crossbar, 4. Horizontal plate, 5. Vertical plate, 6. Guide cylinder, 7. Arc-shaped block, 8. Shim, 9. Round block, 10. Electrode needle, 11. Rod No. 1, 12. Rod No. 1, 13. Rod No. 2, 14. No. 2 screw, 15. Rotating block, 16. Rotating shaft, 17. Rod No. 3, 18. Hinge rod, 19. U-shaped head frame, 20. Motor, 21. Output shaft, 22. Drive gear, 23. Limiting block, 24. Limiting arc groove, 25. Fixing strip, 26. Arc-shaped plate, 27. First bevel gear, 28. Second bevel gear, 29. Connecting shaft. 30. Disc, 31. End gear, 32. Rack, 33. Support rod, 34. Rotating connecting rod, 35. Slip ring, 36. Rotating rod, 37. Spring, 38. Hinge rod, 39. I-beam, 40. Sliding groove, 41. Sliding block, 42. Horizontal bar plate, 43. First limiting plate, 44. Second limiting plate, 45. Locking bar rod, 46. Locking slot plate, 47. Locking slot, 48. U-shaped limiting seat, 49. Triangular bracket, 50. Lifting electric cylinder, 51. Guide bar, 52. Inflatable bag, 53. Flexible air tube, 54. Fixed air tube, 55. Cylinder, 56. Connecting spring, 57. Mounting plate. Detailed Implementation

[0045] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0046] Example:

[0047] See attached document Figure 1-13 A multifunctional head fixation device for neurosurgery includes a bracket 1. The lower end of the bracket 1 is connected to a supporting crossbar 3 via a cuboid block. A linkage adjustment mechanism is connected to the supporting crossbar 3. A head support mechanism is provided at the end of the adjustment mechanism. A support plate is provided on the side wall of the bracket 1. The support plate includes an integrally formed horizontal plate 4 and a vertical plate 5. The vertical plate 5 is vertically arranged at the end of the horizontal plate 4. The horizontal plate 4 is fixedly arranged on the lower end face of the supporting crossbar 3. A driving mechanism is provided on the bracket 1 and the support plate. A neck fixation adjustment mechanism driven by the driving mechanism is also provided on the side wall of the bracket 1.

[0048] The drive mechanism includes a motor 20, a first bevel gear 27, a second bevel gear 28, and an end gear 31. The front side wall of the bracket 1 has a mounting groove, in which the motor 20 is installed. The other end of the output shaft 21 of the motor 20 is rotatably mounted on the vertical plate 5. The first bevel gear 27 is fixedly mounted on the output shaft 21 and meshes with the second bevel gear 28. A connecting shaft 29 is provided on the second bevel gear 28. A support plate is fixedly mounted on the horizontal plate 4. The connecting shaft 29 passes through the support plate and is rotatably mounted. The support plate supports the connecting shaft 29.

[0049] The other end of the connecting shaft 29 is fixedly connected to a concave disk 30, the concave surface of the disk 30 faces outward, and an elastic component is abutted in the concave surface of the disk 30. The elastic component is connected to the rotating rod 36, and the end of the rotating rod 36 is fixedly connected to the end gear 31.

[0050] The elastic component includes a slip ring 35, a spring 37, a hinge rod 38, and an I-beam 39. The rotating rod 36 is fixedly connected to the I-beam 39. The end of the I-beam 39 is provided with a rod body of the same specification and diameter as the rotating rod 36. This rod body is rotatably positioned at the center of the concave surface of the disc 30.

[0051] The I-beam 39 has a sliding groove 40, and a sliding block 41 is slidably disposed in the sliding groove 40. The hinge rod 38 is hinged between the sliding block 41 and the slip ring 35. The spring 37 is disposed on the rotating rod 36 and is located outside the slip ring 35.

[0052] A limiting frame is provided on the rotating rod 36. The limiting frame is integrally formed by a horizontal bar 42, a first limiting plate 43, a second limiting plate 44, and a locking bar 45. The first limiting plate 43 and the second limiting plate 44 are slidably disposed on the rotating rod 36 and are connected to the end of the spring 37.

[0053] When in use, moving the limiting frame to the left or right will compress the spring 37 by the first limiting plate 43 or the second limiting plate 44, thereby causing the slip ring 35 to slide, the hinge rod 38 to be opened, and the two sliding blocks 41 to slide in opposite directions. Finally, the sliding block 41 abuts against the concave side wall of the disc 30, and the bevel gear rotates to drive the disc 30 to rotate. Under the action of friction, the disc 30 and the sliding block 41 drive the sliding block 41 and the I-beam 39 to rotate, thereby driving the rotating rod 36 to rotate.

[0054] Furthermore, to increase friction, the outer surface of the sliding block 41 is made of rubber.

[0055] A limiting block 23 is fixedly provided on the upper end face of the horizontal plate 4. A limiting arc groove 24 is provided on the limiting block 23. An arc plate 26 is slidably provided in the limiting arc groove 24. An internal rack is provided on the inner arc surface of the arc plate 26. A drive gear 22 is provided on the output shaft 21. The drive gear 22 meshes with the internal rack of the arc plate 26. A fixing strip 25 is fixedly connected to the upper end of the arc plate 26.

[0056] The neck fixing adjustment mechanism includes a guide cylinder 6, an arc-shaped block 7, and a moving bar 2. A support rod 33 is provided on the side wall of the bracket 1. The other end of the support rod 33 is fixedly mounted on the vertical plate 5. The fixing bar 25 is slidably mounted on the support rod 33. Two guide rods are provided on the side wall of the support rod 33. The moving bar 2 is slidably mounted on the support rod 33 and the guide rods. Grooves are formed on the lower surfaces of both ends of the moving bar 2. Several guide bars 51 are horizontally arranged in the grooves. A hinge rod 18 is slidably mounted on each guide bar 51. The hinge rod 18 is formed by… The device consists of two hinged rods. The lower end of the hinge rod 18 is connected to a rack 32, which meshes with an end gear 31. A mounting plate 57 is provided on the gear 31, and the upper end of the mounting plate 57 is slidably connected to the rack 32. A connecting spring 56 is also provided between the upper end face of the rack 32 and the lower end face of the moving rod 2. The arc-shaped block 7 is slidably disposed on the surface of the moving rod 2. The guide electric cylinder 6 drives the arc-shaped block 7 to slide. The patient's neck is located between the two arc-shaped blocks 7. By adjusting the distance between the two arc-shaped blocks 7, the fixation and limitation of the patient's neck can be better achieved.

[0057] In use, the motor starts, driving the output shaft 21 to rotate. The output shaft 21 drives the drive gear 22 to rotate, which in turn drives the arc-shaped toothed plate 26 to rotate, thereby driving the fixed plate 25 to rotate. The fixed plate 25 then drives the moving bar 2 to rotate. When the patient's neck is positioned between the two arc-shaped blocks 7, the degree of rotation of the patient's neck can be adjusted to fix a better position, facilitating the surgeon's operation.

[0058] A cylinder 55 is provided directly in front of the moving bar 2. The end of the piston rod of the cylinder 55 is located on the side wall of the vertical plate 5. The cylinder 55 is connected in sequence to a fixed air pipe 54 and a flexible air pipe 53. The flexible air pipe 53 is connected to an arc-shaped block 7. An airbag pad communicating with the flexible air pipe 53 is provided on the surface of the arc-shaped block 7.

[0059] When the moving bar 2 moves towards the vertical plate 5, it compresses the piston rod, thereby inflating the airbag on the surface of the arc-shaped block 7, achieving the effect of linked inflation.

[0060] The side wall of the movable bar 2 is fixedly provided with a slot plate 46, and the slot plate 46 is provided with three slots 47, which can hold the bar rod 45.

[0061] The head support mechanism includes a U-shaped head frame 19. Two circular blocks 9 are fixedly mounted on the two arms of the U-shaped head frame 19, and electrode needles 10 are rotatably mounted on the circular blocks 9. The electrode needles 10 are existing structures that fix the patient's brain. The middle part of the U-shaped head frame 19 is connected to the output shaft 21 through a rotating connecting rod 34. When the output shaft 21 rotates, it drives the rotating connecting rod 34 to rotate, which in turn drives the U-shaped head frame 19 to rotate accordingly.

[0062] The U-shaped head frame 19 is equipped with a U-shaped limiting seat 48, and a lifting electric cylinder 50 is installed inside the U-shaped limiting seat. A triangular bracket 49 is installed on the top of the lifting electric cylinder 50. When the lifting electric cylinder 50 is activated, the triangular bracket 49 will move up and down. A pad 8 is installed on the top of the triangular bracket 49. The pad 8 is connected to the air bag 52. When in use, the pad 8 is inflated by the air bag 52 to ensure better patient comfort.

[0063] The linkage adjustment mechanism includes a first rod 11, a second rod 13, and a third rod 17. The first rod 11 is rotatably mounted on the support crossbar 3. The first rod 11 and the second rod 13 are connected by a first screw 12. The end of the second rod 13 is connected to a rotating block 15 by a second screw 14. The upper end face of the rotating block 15 is connected to the third rod 17 by a rotating rod 16. The third rod 17 is rotatably connected to the U-shaped head frame 19.

[0064] Principles and usage of this invention:

[0065] When in use, the motor 20 is started. The output shaft 21 of the motor 20 drives the drive gear 21 and the first bevel gear 27 to rotate. The first bevel gear 27 meshes with the second bevel gear 28 to rotate. The second bevel gear 28 drives the connecting shaft 29 to rotate. The connecting shaft 29 drives the disc 30 to rotate.

[0066] At the same time, the drive gear 21 drives the arc-shaped toothed plate 26 to rotate, which in turn drives the fixed strip plate 25 to rotate, and the fixed strip plate 25 drives the moving strip 2 to rotate.

[0067] Insert the locking bar 45 into either the leftmost or rightmost locking slot 47. For example, when inserted into the rightmost locking slot 47, the leftmost spring 37 is compressed by the first limiting plate 43, the slip ring 35 moves towards the center, the hinge rod 38 is opened, and the two sliding blocks 41 slide in opposite directions. Finally, the sliding block 41 contacts the concave sidewall of the disc 30, causing the bevel gear to rotate and drive the disc 30 to rotate. Under the action of friction, the disc 30 and the sliding block 41 drive the sliding block 41 and the I-beam 39 to rotate, which in turn drives the rotating rod 36 to rotate, further driving the left gear 31 to rotate. At this time, since the right sliding block 41 does not contact the concave sidewall of the disc 30, the right disc 30 is spinning freely and cannot drive the right gear to rotate.

[0068] Since the distance between the lower end face of the moving bar 2 and the gear 31 changes when the moving bar 2 rotates, it may cause the rack and gear to fail to mesh. Therefore, in addition to meshing, the rack and gear are also provided with a mounting plate 57 to ensure that the gear and rack do not separate.

[0069] Meanwhile, when the moving bar 2 changes direction, the hinge 18 will remain in place under the action of the connecting spring 56. The hinge 18 slides on the guide bar 51 to ensure that the rotation of the moving bar 2 is not restricted. In addition, during the movement, the hinge 18 can be raised or compressed, and the connecting spring 56 is in an extended state, which can press the rack downward to ensure meshing with the gear.

[0070] When gear 31 and rack are engaged, the rack moves forward, which in turn moves the moving bar 2 forward, adjusting it to a suitable position. During this movement, the piston rod is compressed, inflating the airbag on the surface of the arc-shaped block 7, achieving a synchronized inflation effect. Simultaneously, the guide electric cylinder 6 is activated to drive the arc-shaped block 7 to slide. The patient's neck is positioned between the two arc-shaped blocks 7. By adjusting the distance between the two arc-shaped blocks 7, the patient's neck can be better fixed and confined.

[0071] As the output shaft rotates, it also drives the rotating connecting rod 34 to rotate, turning the U-shaped head frame 19 to a suitable angle. After rotation, the connecting rod adjustment mechanism is adjusted, and screws 12 and 2 are tightened to fix the U-shaped head frame 19. Finally, the lifting cylinder 50 is activated, raising the triangular support 49 to a suitable height. The air bag 52 inflates the pad 8 to ensure better patient comfort. Simultaneously, electrodes are fixed to the patient's brain. Subsequent surgical procedures are then completed.

[0072] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional head holder for neurosurgery, characterized by: The bracket (1) includes a support crossbar (3) at its lower end. A linkage adjustment mechanism is connected to the support crossbar (3). A head support mechanism is provided at the end of the adjustment mechanism. A support plate is provided on the side wall of the bracket (1). The support plate includes an integrally formed horizontal plate (4) and a vertical plate (5). A drive mechanism is provided on the bracket (1) and the support plate. A neck fixing adjustment mechanism driven by the drive mechanism is also provided on the side wall of the bracket (1).

2. The multi-functional head holder for neurosurgery according to claim 1, characterized in that: The drive mechanism includes a motor (20), a first bevel gear (27), a second bevel gear (28), and an end gear (31). The motor (20) is mounted on the side wall of the bracket (1). The other end of the output shaft (21) of the motor (20) is mounted on the vertical plate (5). The first bevel gear (27) is mounted on the output shaft (21). The first bevel gear (27) meshes with the second bevel gear (28). A connecting shaft (29) is mounted on the second bevel gear (28). The other end of the connecting shaft (29) is connected to a concave disc (30). An elastic component is abutted in the concave surface of the disc (30). The elastic component is connected to a rotating rod (36). The end of the rotating rod (36) is fixedly connected to the end gear (31).

3. The multi-functional head holder for neurosurgery according to claim 2, characterized in that: The elastic component includes a slip ring (35), a spring (37), a hinge rod (38), and an I-beam (39). The rotating rod (36) is fixedly connected to the I-beam (39). A sliding groove (40) is provided on the I-beam (39). A sliding block (41) is slidably disposed in the sliding groove (40). The hinge rod (38) is hinged between the sliding block (41) and the slip ring (35). The spring (37) is disposed on the rotating rod (36) and located outside the slip ring (35).

4. A multifunctional head fixation device for neurosurgery according to claim 3, characterized in that: The rotating rod (36) is provided with a limiting frame. The limiting frame is integrally formed by a horizontal bar (42), a first limiting plate (43), a second limiting plate (44), and a locking bar (45). The first limiting plate (43) and the second limiting plate (44) are slidably disposed on the rotating rod (36) and are connected to the end of the spring (37).

5. A multifunctional head fixation device for neurosurgery according to claim 4, characterized in that: A limiting block (23) is provided on the horizontal plate (4), and a limiting arc groove (24) is provided on the limiting block (23). An arc plate (26) is slidably arranged in the limiting arc groove (24). An internal toothed rack is provided on the concave surface of the arc plate (26). A drive gear (22) is provided on the output shaft (21). The drive gear (22) meshes with the arc plate (26). A fixing strip (25) is fixedly connected to the upper part of the arc plate (26).

6. The multi-functional head holder for neurosurgery according to claim 5, characterized in that: The neck fixing adjustment mechanism includes a guide electric cylinder (6), an arc block (7), and a moving bar (2). The side wall of the bracket (1) is provided with a support rod (33). The other end of the support rod (33) is fixedly mounted on the vertical plate (5). The fixing bar (25) is slidably mounted on the support rod (33). The side wall of the support rod (33) is provided with two guide rods. The moving bar (2) is slidably mounted on the support rod (33) and the guide rods. The lower surfaces of both ends of the moving bar (2) are provided with grooves, and several guides are arranged horizontally in the grooves. The guide bar (51) has a hinge rod (18) slidably disposed on it. The lower end of the hinge rod (18) is connected to a rack (32). The rack (32) meshes with the end gear (31). The gear (31) is provided with a mounting plate (57). The upper end of the mounting plate (57) is slidably connected to the rack (32). A connecting spring (56) is also provided between the upper end face of the rack (32) and the lower end face of the moving bar (2). The arc-shaped block (7) is slidably disposed on the surface of the moving bar (2). The guide electric cylinder (6) drives the arc-shaped block (7) to slide.

7. The multi-functional head holder for neurosurgery according to claim 6, characterized in that: A cylinder (55) is provided in front of the moving bar (2). The end of the piston rod of the cylinder (55) is provided on the side wall of the vertical plate (5). The cylinder (55) is connected in sequence to a fixed air pipe (54) and a flexible air pipe (53). The flexible air pipe (53) is connected to the arc block (7). The surface of the arc block (7) is provided with an airbag pad that communicates with the flexible air pipe (53).

8. The multi-functional head holder for neurosurgery according to claim 7, characterized in that: The head support mechanism includes a U-shaped head frame (19), on which electrode needles (10) are rotatably mounted. The middle part of the U-shaped head frame (19) is connected to the output shaft (21) via a rotating connecting rod (34). A U-shaped limiting seat (48) is provided on the U-shaped head frame (19). A lifting electric cylinder (50) is provided inside the U-shaped limiting seat (48). A triangular bracket (49) is provided on the top of the lifting electric cylinder (50). A pad (8) is provided on the top of the triangular bracket (49). The pad (8) is connected to the airbag (52).

9. The multi-functional head holder for neurosurgery according to claim 8, characterized in that: The linkage adjustment mechanism includes a first rod (11), a second rod (13), and a third rod (17). The first rod (11) is rotatably mounted on the support crossbar (3). The first rod (11) and the second rod (13) are connected by a first screw (12). The end of the second rod (13) is connected to a rotating block (15) by a second screw (14). The upper end face of the rotating block (15) is connected to the third rod (17) through a rotating shaft (16). The third rod (17) is rotatably connected to the U-shaped head frame (19).

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