Operation head fixing device
By designing a fixing device for the safety switch and transmission mechanism, the technical problems of complex operation in the prior art have been solved, the traditional technical problems have been solved, safety and ease of operation have been provided, multi-position requirements have been met, and the precision and safety of surgery have been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LEHENG MEDICAL TECH (TIANJIN) CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional surgical head fixation devices are complex to operate, difficult to adapt to multiple body positions, and lack safety mechanisms to prevent misoperation, thus affecting surgical precision and safety.
A fixing device including a support, adjuster, and connector is designed. It adopts a safety switch and a transmission mechanism. The flexion and extension arm is unlocked by the double operation of the safety switch, which reduces accidental operation. It supports supine, lateral, and prone positions and provides a convenient adjustment method.
It improves the safety and efficiency of surgical procedures, reduces the possibility of misoperation, adapts to multiple body positions, ensures head stability, and supports intubation and real-time observation.
Smart Images
Figure CN224220374U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a surgical head fixation device. Background Technology
[0002] During craniocerebral and cervical spine surgeries, head stability directly affects surgical precision and patient safety, thus requiring high levels of fixation effectiveness from head immobilization devices. However, traditional head immobilization devices have the following shortcomings: First, most traditional devices rely on manual knobs to adjust the joints of various components, thereby regulating the angle and position of the patient's head and neck. This operation is complex, requiring repeated adjustments during surgery and resulting in low efficiency. Second, they are difficult to adapt to various body positions, including supine, lateral, and prone positions. Especially in the prone position, traditional headrests can easily compress the patient's facial organs, affecting intubation and intraoperative observation.
[0003] In critical surgical procedures, head stability is crucial, but traditional fixation devices lack safety mechanisms to prevent accidental operation. Medical staff may accidentally touch the adjustment components, causing the device to unlock unintentionally and affecting surgical safety. Utility Model Content
[0004] The purpose of this invention is to provide a surgical head fixation device that solves the problems of existing surgical head fixation devices, such as complex and simple operation methods and lack of safety mechanisms to prevent misoperation. It provides key safety guarantees and operational controllability, and is suitable for complex multi-position surgical scenarios with extremely high requirements for precision and reliability.
[0005] To achieve the above objectives, this utility model provides a surgical head fixation device, including a support, an adjuster, and a connector. One end of the adjuster is connected to the support via a first insertion mechanism, and the other end is connected to the connector. The adjuster includes a first adjustment device, a second adjustment device, a lateral support member, a first flexion-extension arm, and a second flexion-extension arm.
[0006] The first adjustment device includes a first grip, a first handle, a first safety switch and a first transmission mechanism. The first handle is hinged to the first grip. The first safety switch is located below the first grip and is hinged to it. When the first safety switch is pressed into the first grip and the first handle is close to the first grip, the first transmission mechanism triggers the first extension arm to unlock.
[0007] The second adjustment device includes a second grip, a second handle, a second safety switch, and a second transmission mechanism. The second handle is hinged to the second grip. The second safety switch is located below the second grip and is hinged to it. When the second safety switch is pressed into the second grip and the second handle is close to the second grip, the second transmission mechanism triggers the second extension arm to unlock.
[0008] Preferably, the first insertion mechanism includes a first adapter arm and a socket, wherein the first adapter arm is fixedly connected to the socket via a first set screw and a locking handle;
[0009] The support is a U-shaped head clamp with a first toothed disc on it and a second toothed disc on the first adapter arm. The first adapter arm and the U-shaped head clamp are connected by the first toothed disc and the second toothed disc and fixedly connected by a second set screw.
[0010] The U-shaped head clamp includes a fixed arm and a movable arm, and the fixed arm and the movable arm are fixedly connected by a handle;
[0011] The fixed arm is provided with a nail seat, the rotation angle of which is adjusted by a first knob. The nail seat is provided with two first head nails, and the movable arm is provided with a second head nail, which is driven by a second knob to embed into the skull.
[0012] Preferably, the first extension arm is fixedly connected to the transverse support member by a first bushing and a first bolt, and a first disc spring is provided on the first bolt. The first extension arm is connected to the second extension arm by a second bushing and a second bolt, and a second disc spring is provided on the second bolt. The second extension arm is connected to the connector by a third bushing and a third bolt, and a third disc spring is provided on the third bolt.
[0013] Preferably, the first transmission mechanism includes a first rotating component, a second rotating component, a first transmission rod, a third rotating component, a second transmission rod, a first spring, and a second spring. The two ends of the first spring are respectively connected to the first safety switch and the first handle, and the two ends of the second spring are respectively connected to the first handle and the first grip.
[0014] The first rotating member is hinged to the first safety switch, the second rotating member is hinged to the first handle, the first handle abuts against one end of the second rotating member via a ball bearing, and the other end of the second rotating member abuts against the first transmission rod, the first transmission rod being disposed inside the transverse support member;
[0015] The third rotating component is connected to the first bending arm via the first fixed seat, the third rotating component is hinged to the first fixed seat, and the first transmission rod abuts against the third rotating component;
[0016] The second transmission rod moves horizontally on the side of the first extension arm. The third rotating member abuts against the second transmission rod. The second transmission rod is provided with a first fixed post and a second fixed post. The first fixed post and the second fixed post abut against the first swing member and the second swing member respectively. A first positioning member and a second positioning member are coaxially connected to the first swing member and the second swing member respectively. A first limiting member and a second limiting member are provided on the outside of the first positioning member and the second positioning member respectively.
[0017] The first positioning member and the second positioning member are respectively connected to the first bolt and the second bolt.
[0018] Preferably, the second transmission mechanism includes a fourth rotating component, a fifth rotating component, a third transmission rod, a sixth rotating component, a fourth transmission rod, a third spring, and a fourth spring. The two ends of the third spring are respectively connected to the second safety switch and the second handle, and the two ends of the fourth spring are respectively connected to the second handle and the second grip.
[0019] The fourth rotating member is hinged to the second safety switch, the fifth rotating member is hinged to the second handle, and the second handle abuts against one end of the fifth rotating member via a ball bearing;
[0020] The third transmission rod is disposed inside the transverse support member, and the other end of the fifth rotating member abuts against the third transmission rod;
[0021] The sixth rotating component is connected to the first bending and extending arm via the second fixed seat, the sixth rotating component is hinged to the second fixed seat, and the third transmission rod abuts against the sixth rotating component;
[0022] The fourth transmission rod moves on the side of the first extension arm. One end of the fourth transmission rod abuts against the sixth rotating member, and the other end abuts against the seventh rotating member. The seventh rotating member is hinged to the first extension arm. The seventh rotating member abuts against the fifth transmission rod via ball bearings. The fifth transmission rod moves on the side of the second extension arm. A third fixed post is provided on the fifth transmission rod. The third fixed post abuts against the third swing member. A third positioning member rotates coaxially with the third swing member. A third limiting member is provided on the outside of the third positioning member. The third limiting member is connected to a third bolt.
[0023] Preferably, the connector includes a crossbeam, a movable shaft, and a second adapter arm. The movable shaft is fixedly connected to the crossbeam via a third set screw, and the second adapter arm is disposed at both ends of the crossbeam and fixedly connected to it via a fourth set screw.
[0024] The second adapter arm is fixedly connected to the side rail clamp via the fifth set screw and the third gear plate. One end of the side rail clamp is provided with a plug rod, and the plug rod is connected to the side rail clamp via the sixth set screw.
[0025] Preferably, the connector is connected to the side rail of the operating table or to a plug-in connection.
[0026] Preferably, the axis of the moving shaft is set as an arc surface.
[0027] Preferably, the first adapter arm is configured as a right-angle adapter arm, a 45° angle adapter arm, or a short adapter arm.
[0028] Therefore, the surgical head fixation device provided by this utility model has the following beneficial effects: by setting a first safety switch and a second safety switch, the first handle and the second handle can only be unlocked when the first safety switch and the second safety switch are pressed into the first handle and the second handle respectively. The safety switch and the handle must be operated simultaneously to adjust the flexion and extension arms. This setting reduces the possibility of misoperation and avoids the device being accidentally unlocked due to medical staff accidentally touching the adjustment parts during the operation, thus ensuring safe operation of the surgery.
[0029] By setting the first handle to be linked with the first transmission mechanism and the second handle to be linked with the second transmission mechanism, the first and second flexion and extension arms can be unlocked and locked, which facilitates one-handed operation and allows medical staff to operate conveniently when quick adjustments are needed without affecting the continuity of the surgical procedure.
[0030] The U-shaped head clamp supports supine, lateral, and prone positions. In the prone position, the face is suspended to avoid organ compression, while also facilitating intubation and real-time observation. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the overall structure of a surgical head fixation device according to an embodiment of the present invention;
[0032] Figure 2 This is a schematic diagram of the internal structure of the first grip;
[0033] Figure 3 This is a partial structural diagram of the first transmission mechanism;
[0034] Figure 4 A schematic diagram of the internal structure of the second grip;
[0035] Figure 5 This is a schematic diagram of the overall structure of a surgical head fixation device from a first-view perspective in an embodiment of the present invention.
[0036] Figure 6 for Figure 5Internal structure diagram at point A;
[0037] Figure 7 This is a schematic diagram of the overall structure of a surgical head fixation device from a second perspective in an embodiment of the present invention.
[0038] Figure 8 for Figure 7 Internal structure diagram at point B;
[0039] Figure 9 This is a front view of a surgical head fixation device according to an embodiment of the present invention;
[0040] Figure 10 It is a 45° angle adapter arm;
[0041] Figure 11 For short adapter arms;
[0042] Figure Labels
[0043] 1. U-shaped head clamp; 11. First gear plate; 12. Second set screw; 13. Fixing arm; 131. Pin seat; 132. First knob; 133. First pin; 134. Second pin; 135. Second knob; 14. Moving arm; 15. Handle; 2. Adjuster; 21. First adjusting device; 211. First grip; 212. First handle; 213. First safety switch; 22. Second adjusting device; 221. Second grip; 222. Second handle; 223. Second safety switch; 23. 24. Lateral support; 241. First extension arm; 242. First bushing; 243. First disc spring; 244. Second bushing; 245. Second bolt; 246. Second disc spring; 25. Second extension arm; 251. Third bushing; 252. Third bolt; 253. Third disc spring; 3. Connector; 31. Crossbeam; 32. Moving shaft; 33. Second adapter arm; 34. Third set screw; 35. Fourth set screw; 36. Fifth set screw; 37. Third gear plate; 38. Side rail clamp; 3 9. Insert rod; 310. Sixth set screw; 4. First insertion mechanism; 41. First adapter arm; 42. Socket; 43. First set screw; 44. Clamp; 45. Second gear plate; 5. First transmission mechanism; 51. First rotating component; 52. Second rotating component; 53. First transmission rod; 54. Third rotating component; 55. Second transmission rod; 56. First spring; 57. Second spring; 58. First fixed post; 59. Second fixed post; 510. First fixed base; 511. First swing component; 512. 513. First positioning component; 514. Second positioning component; 515. First limiting component; 516. Second limiting component; 6. Second transmission mechanism; 61. Fourth rotating component; 62. Fifth rotating component; 63. Third transmission rod; 64. Sixth rotating component; 65. Fourth transmission rod; 66. Third spring; 67. Fourth spring; 68. Second fixed seat; 69. Seventh rotating component; 610. Fifth transmission rod; 611. Third swing component; 612. Third positioning component; 613. Third limiting component. Detailed Implementation
[0044] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0045] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.
[0046] Example
[0047] like Figure 1-11 As shown, this utility model discloses a surgical head fixation device, including a support, an adjuster 2, and a connector 3. One end of the adjuster 2 is connected to the support through a first insertion mechanism 4, and the other end is connected to the connector 3. The adjuster 2 includes a first adjusting device 21, a second adjusting device 22, a transverse support 23, a first flexion-extension arm 24, and a second flexion-extension arm 25.
[0048] The first adjustment device 21 includes a first grip 211, a first handle 212, a first safety switch 213, and a first transmission mechanism 5. The first handle 212 is hinged to the first grip 211. The first safety switch 213 is located below the first grip 211 and is hinged to it. When the first safety switch 213 is pressed into the first grip 211 and the first handle 212 is close to the first grip 211, the first transmission mechanism 5 triggers the first extension arm 24 to unlock.
[0049] The second adjustment device 22 includes a second grip 221, a second handle 222, a second safety switch 223, and a second transmission mechanism 6. The second handle 222 is hinged to the second grip 221. The second safety switch 223 is located below the second grip 221 and is hinged to it. When the second safety switch 223 is pressed into the second grip 221 and the second handle 222 is close to the second grip 221, the second transmission mechanism 6 triggers the second extension arm 25 to unlock.
[0050] The first plug-in mechanism 4 includes a first adapter arm 41 and a socket 42. The first adapter arm 41 is fixedly connected to the socket 42 via a first set screw 43 and a locking handle 44.
[0051] The support is a U-shaped head clamp 1, on which a first toothed disc 11 is provided, and a second toothed disc 45 is provided on a first adapter arm 41. The first adapter arm 41 and the U-shaped head clamp 1 are connected by the first toothed disc 11 and the second toothed disc 45 and are fixedly connected by a second set screw 12.
[0052] The U-shaped head clamp 1 includes a fixed arm 13 and a movable arm 14. The fixed arm 13 and the movable arm 14 are fixedly connected by a handle 15. Pulling out the handle 15 can adjust the distance between the movable arm 14 and the fixed arm 13 to suit different patient head sizes. Releasing the handle 15 can lock the movable arm 14.
[0053] The fixed arm 13 is equipped with a pin holder 131, the rotation angle of which is adjusted by a first knob 132. Two first-headed pins 133 are mounted on the pin holder 131. A second-headed pin 134 is mounted on the movable arm 14. The second-headed pin 134 is driven by a second knob 135 to embed itself into the skull. Loosening the first knob 132 adjusts the rotation angle of the pin holder 131; tightening the first knob 132 locks the position of the pin holder 131; rotating the second knob 135 applies pressure to the second-headed pin 134, embedding it into the skull, thus securely mounting the U-shaped head clamp 1 to the patient's head.
[0054] The first extension arm 24 and the transverse support 23 are fixedly connected by the first bushing 241 and the first bolt 242. The first bolt 242 is provided with a first disc spring 243. The first extension arm 24 and the second extension arm 25 are connected by the second bushing 244 and the second bolt 245. The second bolt 245 is provided with a second disc spring 246. The second extension arm 25 and the connector 3 are connected by the third bushing 251 and the third bolt 252. The third bolt 252 is provided with a third disc spring 253.
[0055] The first transmission mechanism 5 includes a first rotating component 51, a second rotating component 52, a first transmission rod 53, a third rotating component 54, a second transmission rod 55, a first spring 56, and a second spring 57. The two ends of the first spring 56 are respectively connected to the first safety switch 213 and the first grip 211, and the two ends of the second spring 57 are respectively connected to the first handle 212 and the first grip 211.
[0056] The first rotating member 51 is hinged to the first safety switch 213, the second rotating member 52 is hinged to the first handle 211, the first handle 212 abuts against one end of the second rotating member 52 through a ball bearing, and the other end of the second rotating member 52 abuts against the first transmission rod 53, which is located inside the transverse support member 23.
[0057] The third rotating member 54 is connected to the first bending arm 24 through the first fixed seat 510. The third rotating member 54 is hinged to the first fixed seat 510, and the first transmission rod 53 abuts against the third rotating member 54.
[0058] The second transmission rod 55 moves horizontally on the side of the first extension arm 24. The third rotating member 54 abuts against the second transmission rod 55. The second transmission rod 55 is provided with a first fixed post 58 and a second fixed post 59. The first fixed post 58 and the second fixed post 59 abut against the first swing member 511 and the second swing member 512 respectively. The first positioning member 513 and the second positioning member 514 are coaxially connected to the first swing member 511 and the second swing member 512 respectively. The first positioning member 513 and the second positioning member 514 are respectively provided with a first limiting member 515 and a second limiting member 516 on their exteriors.
[0059] The first positioning element 513 and the second positioning element 514 are respectively connected to the first bolt 242 and the second bolt 245.
[0060] The second transmission mechanism 6 includes a fourth rotating member 61, a fifth rotating member 62, a third transmission rod 63, a sixth rotating member 64, a fourth transmission rod 65, a third spring 66, and a fourth spring 67. The two ends of the third spring 66 are respectively connected to the second safety switch 223 and the second handle 221, and the two ends of the fourth spring 67 are respectively connected to the second handle 222 and the second handle 221.
[0061] The fourth rotating member 61 is hinged to the second safety switch 223, the fifth rotating member 62 is hinged to the second handle 221, and the second handle 222 abuts against one end of the fifth rotating member 62 via a ball bearing.
[0062] The third transmission rod 63 is located inside the transverse support member 23, and the other end of the fifth rotating member 62 abuts against the third transmission rod 63.
[0063] The sixth rotating component 64 is connected to the first bending arm 24 via the second fixed seat 68. The sixth rotating component 64 is hinged to the second fixed seat 68, and the third transmission rod 63 abuts against the sixth rotating component 64.
[0064] The fourth transmission rod 65 moves on the side of the first bending arm 24. One end of the fourth transmission rod 65 abuts against the sixth rotating member 64, and the other end abuts against the seventh rotating member 69. The seventh rotating member 69 is hinged to the first bending arm 24. The seventh rotating member 69 abuts against the fifth transmission rod 610 through ball bearings. The fifth transmission rod 610 moves on the side of the second bending arm 25. A third fixed post is provided on the fifth transmission rod 610. The third fixed post abuts against the third swing member 611. A third positioning member 612 rotates coaxially with the third swing member 611. A third limiting member 613 is provided on the outside of the third positioning member 612. The third limiting member 613 is connected to the third bolt 252.
[0065] Connector 3 includes a crossbeam 31, a movable shaft 32, and a second adapter arm 33. The movable shaft 32 is fixedly connected to the crossbeam 31 by a third set screw 34. Loosening the third set screw 34 allows the movable shaft 32 to be adjusted laterally along the crossbeam 31, enabling the second flexion-extension arm 25 to move laterally. Tightening the third set screw 34 fixes the position of the movable shaft 32 on the crossbeam 31. The second adapter arm 33 is located at both ends of the crossbeam 31 and is fixedly connected to it by a fourth set screw 35. Loosening the fourth set screw 35 allows the position of the second adapter arm 33 on the crossbeam 31 to adapt to the width of different operating tables.
[0066] The second adapter arm 33 is fixedly connected to the side rail clamp 38 via the fifth set screw 36 and the third gear plate 37. One end of the side rail clamp 38 is provided with a plug 39, which is connected to the side rail clamp 38 via the sixth set screw 310. Loosening the fifth set screw 36 can adjust the angle of the side rail clamp 38 relative to the second adapter arm 33, and tightening the fifth set screw 36 can lock the angle of the side rail clamp 38 relative to the second adapter arm 33.
[0067] Connector 3 can be connected to the operating table via a side rail or a plug-in connection.
[0068] The axis of the movable shaft 32 is set as an arc surface. When the second handle 222 approaches the second grip 221, the third bushing 251 can adjust its angle around the axis of the movable shaft 32, thereby adjusting the angle of the second flexor arm 25 relative to the crossbeam 31, making the patient's head adjustment more flexible. When the second handle 222 is reset, the third bushing 251 is in a locked state.
[0069] In this embodiment, the first adapter arm 41 is set as a right-angle adapter arm, but it can also be replaced with a 45° angle adapter arm or a short adapter arm.
[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.
Claims
1. A surgical head fixation device, characterized in that: It includes a support, an adjuster, and a connector. One end of the adjuster is connected to the support via a first plug-in mechanism, and the other end is connected to the connector. The adjuster includes a first adjusting device, a second adjusting device, a lateral support, a first flexing arm, and a second flexing arm. The first adjustment device includes a first grip, a first handle, a first safety switch and a first transmission mechanism. The first handle is hinged to the first grip. The first safety switch is located below the first grip and is hinged to it. When the first safety switch is pressed into the first grip and the first handle is close to the first grip, the first transmission mechanism triggers the first extension arm to unlock. The second adjustment device includes a second grip, a second handle, a second safety switch, and a second transmission mechanism. The second handle is hinged to the second grip. The second safety switch is located below the second grip and is hinged to it. When the second safety switch is pressed into the second grip and the second handle is close to the second grip, the second transmission mechanism triggers the second extension arm to unlock.
2. The surgical head fixation device according to claim 1, characterized in that: The first insertion mechanism includes a first adapter arm and a socket, wherein the first adapter arm is fixedly connected to the socket via a first set screw and a locking handle; The support is a U-shaped head clamp with a first toothed disc on it and a second toothed disc on the first adapter arm. The first adapter arm and the U-shaped head clamp are connected by the first toothed disc and the second toothed disc and fixedly connected by a second set screw. The U-shaped head clamp includes a fixed arm and a movable arm, and the fixed arm and the movable arm are fixedly connected by a handle; The fixed arm is provided with a nail seat, the rotation angle of which is adjusted by a first knob. The nail seat is provided with two first head nails, and the movable arm is provided with a second head nail, which is driven by a second knob to embed into the skull.
3. The surgical head fixation device according to claim 1, characterized in that: The first extension arm is fixedly connected to the transverse support member by a first bushing and a first bolt, and a first disc spring is provided on the first bolt. The first extension arm is connected to the second extension arm by a second bushing and a second bolt, and a second disc spring is provided on the second bolt. The second extension arm is connected to the connector by a third bushing and a third bolt, and a third disc spring is provided on the third bolt.
4. The surgical head fixation device according to claim 1, characterized in that: The first transmission mechanism includes a first rotating component, a second rotating component, a first transmission rod, a third rotating component, a second transmission rod, a first spring, and a second spring. The two ends of the first spring are respectively connected to the first safety switch and the first handle, and the two ends of the second spring are respectively connected to the first handle and the first grip. The first rotating member is hinged to the first safety switch, the second rotating member is hinged to the first handle, the first handle abuts against one end of the second rotating member via a ball bearing, and the other end of the second rotating member abuts against the first transmission rod, the first transmission rod being disposed inside the transverse support member; The third rotating component is connected to the first bending arm via the first fixed seat, the third rotating component is hinged to the first fixed seat, and the first transmission rod abuts against the third rotating component; The second transmission rod moves horizontally on the side of the first extension arm. The third rotating member abuts against the second transmission rod. The second transmission rod is provided with a first fixed post and a second fixed post. The first fixed post and the second fixed post abut against the first swing member and the second swing member respectively. A first positioning member and a second positioning member are coaxially connected to the first swing member and the second swing member respectively. A first limiting member and a second limiting member are provided on the outside of the first positioning member and the second positioning member respectively. The first positioning member and the second positioning member are respectively connected to the first bolt and the second bolt.
5. A surgical head fixation device according to claim 2, characterized in that: The second transmission mechanism includes a fourth rotating component, a fifth rotating component, a third transmission rod, a sixth rotating component, a fourth transmission rod, a third spring, and a fourth spring. The two ends of the third spring are respectively connected to the second safety switch and the second handle, and the two ends of the fourth spring are respectively connected to the second handle and the second grip. The fourth rotating member is hinged to the second safety switch, the fifth rotating member is hinged to the second handle, and the second handle abuts against one end of the fifth rotating member via a ball bearing; The third transmission rod is disposed inside the transverse support member, and the other end of the fifth rotating member abuts against the third transmission rod; The sixth rotating component is connected to the first bending and extending arm via the second fixed seat, the sixth rotating component is hinged to the second fixed seat, and the third transmission rod abuts against the sixth rotating component; The fourth transmission rod moves on the side of the first extension arm. One end of the fourth transmission rod abuts against the sixth rotating member, and the other end abuts against the seventh rotating member. The seventh rotating member is hinged to the first extension arm. The seventh rotating member abuts against the fifth transmission rod via ball bearings. The fifth transmission rod moves on the side of the second extension arm. A third fixed post is provided on the fifth transmission rod. The third fixed post abuts against the third swing member. A third positioning member rotates coaxially with the third swing member. A third limiting member is provided on the outside of the third positioning member. The third limiting member is connected to a third bolt.
6. A surgical head fixation device according to claim 2, characterized in that: The connector includes a crossbeam, a movable shaft, and a second adapter arm. The movable shaft is fixedly connected to the crossbeam via a third set screw, and the second adapter arm is disposed at both ends of the crossbeam and fixedly connected to it via a fourth set screw. The second adapter arm is fixedly connected to the side rail clamp via the fifth set screw and the third gear plate. One end of the side rail clamp is provided with a plug rod, and the plug rod is connected to the side rail clamp via the sixth set screw.
7. A surgical head fixation device according to claim 6, characterized in that: The connector is connected to the side rail of the operating table or to a plug-in type.
8. A surgical head fixation device according to claim 6, characterized in that: The axis of the moving shaft is set as an arc surface.
9. A surgical head fixation device according to claim 2, characterized in that: The first adapter arm is configured as a right-angle adapter arm, a 45° angle adapter arm, or a short adapter arm.