Head fixing device for ear-nose-throat and head-neck surgery

Abstract

The application discloses an ear-nose-throat head and neck surgery head fixing device, which comprises a bottom frame, and clamping blocks for clamping the head are arranged on the top surface of the bottom frame. The head of a patient is clamped by the two clamping blocks under the driving of a pulling structure, the weight of the head of the patient is applied to the two clamping blocks, the clamping blocks move downwards in the vertical grooves under the pressing condition, the pressure of the head of the patient on the clamping blocks is gradually reduced by the elastic force of the first springs, and the bottom of the clamping blocks avoids directly impacting on the top surface of the bottom frame by the elastic force of the first springs. The back of the head of the patient contacts the elastic cloth, the pressure of the head of the patient on the elastic cloth makes the elastic cloth pull the sliding bars to move downwards in the arc-shaped grooves, the sliding bars move downwards to drive the rotating sleeves to rotate and the torsional springs to twist by the pulling pieces, and the twisting force of the torsional springs and the elastic force of the first springs facilitate the head of different patients to be steadily limited between the two clamping blocks and increase the protection of the head.

Description

Technical Field

[0001] This invention belongs to the field of otolaryngology surgery technology, and specifically relates to a head fixation device for otolaryngology head and neck surgery. Background Technology

[0002] Otorhinolaryngology is a surgical discipline that diagnoses and treats the ear, nose, pharynx, larynx, and related head and neck regions. With advancements in science and technology, and the mutual penetration and promotion among various medical specialties, the scope of otolaryngology has expanded. The emergence of specialties such as ear microsurgery, otopathic surgery, lateral skull base surgery, audiology and balance science, endoscopic sinus surgery, nasal neurosurgery (nasal skull base surgery), head and neck surgery, laryngeal microsurgery, voice and speech disorders, and pediatric otolaryngology has greatly enriched the field.

[0003] During otolaryngology-head and neck surgery, head immobilization devices are used to fix the patient's head and prevent it from shaking during treatment, which could affect the doctor's treatment. However, traditional head immobilization devices do not have a cushioning structure for the patient's head when fixing it. This can cause discomfort to the patient's head if the doctor applies too much force during treatment, affecting the patient's comfort during treatment.

[0004] Therefore, it is necessary to invent a head fixation device for otolaryngology-head and neck surgery to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, the present invention provides a head fixation device for otolaryngology-head and neck surgery, thereby resolving the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a head fixation device for otolaryngology-head and neck surgery, comprising a base frame, wherein clamping blocks for holding the head are provided on both sides of the top surface of the base frame, the concave sides of the two clamping blocks are arranged opposite to each other, and the convex surfaces of the clamping blocks are movably engaged with a movable structure that pushes the clamping blocks to move by means of a movable block, the movable structure comprising two inner strips, the two inner strips being correspondingly installed on the inner side of the base frame, the two inner strips being arranged one-to-one with the two clamping blocks, a vertical frame being fixedly installed at the top center of the inner strips, the outer end of the movable block being correspondingly snapped into the inner side of the vertical frame, grooves for sliding cooperation with the vertical frame being provided on both the top and bottom surfaces of the base frame, and a pulling structure for pushing the inner strips to move at the center of the inner side of the base frame, the inner strips using the vertical frame to drive the clamping blocks to move at the top of the base frame.

[0007] Furthermore, the vertical frame is configured as a square-round rod, and the two vertical frames are provided with vertical grooves on opposite sides that slide with the movable block. The outer side of the movable block is in contact with the inner side of the vertical frame, and the clamping block moves up and down inside the vertical groove of the vertical frame using the movable block. A first spring is provided inside the vertical frame, and the movable block is fixedly connected to the top surface of the inner bar using the first spring.

[0008] Furthermore, a limiting rod is installed at the top of the clamping block, and a rotating sleeve is movably sleeved on the surface of the limiting rod. Both ends of the rotating sleeve are fixedly connected to the two sides of the top of the clamping block by torsion springs. An arc-shaped groove is provided inside the clamping block, and a slide is provided inside the arc-shaped groove. A pull tab is wound around the surface of the rotating sleeve. The bottom end of the pull tab passes through the top of the clamping block and is fixedly connected to the slide. An elastic cloth is connected between the two opposing clamping blocks.

[0009] Furthermore, the two ends of the elastic cloth are respectively fixedly connected to two sliders. The end of the elastic cloth passes through the center of the bottom end of the clamping block, and the elastic cloth is connected to the arc surface of the slider. The elastic cloth pulls the slider to move down inside the arc groove. The slider moves down smoothly inside the arc groove using the arc surface. Elastic rods are provided on both sides of the bottom surface of the clamping block, and the bottom end of the elastic rod does not contact the top surface of the base frame.

[0010] Furthermore, support columns are provided at the four corners of the bottom surface of the base frame, and a protruding rod is provided at the center of the bottom surface of the inner strip, which slides in conjunction with the groove of the bottom surface of the base frame. The length of the protruding rod is less than the length of the support column, and a nut is spirally sleeved on the surface of the protruding rod, with the top surface of the nut correspondingly fitting against the bottom surface of the base frame.

[0011] Furthermore, the pulling structure includes a rotating frame, a central column that rotates and engages with the rotating frame is provided at the center of the inner side of the base frame, a fixed rod is provided on one side of the inner side of the base frame, the two ends of the fixed rod pass through the inner strips and are fixedly connected to the two inner side walls of the base frame, a limiting block is fixedly connected at the center of the fixed rod, and the length of the limiting block is the same as the outer diameter of the rotating frame, the two inner strips are fixedly connected by a second spring, and the second spring is sleeved on the surface of the fixed rod, and the second spring is fixedly connected to the limiting block.

[0012] Furthermore, the pulling structure also includes a gear, which is rotatably mounted at the center of the front side of the base frame and meshes with the teeth on the surface of the rotating frame. The top and bottom of the circumferential side of the rotating frame are respectively fixedly connected to the inner sides of the two inner strips by means of a roll plate.

[0013] Furthermore, the base frame has frame plates at the top and bottom of the front side, and a rack is slidably engaged between the two frame plates. The rear side of the rack meshes with a gear. Both sides of the front side of the base frame have clips corresponding to the rack. The clips are fixedly connected to the base frame using multiple elastic pieces, and the clips are engaged with the teeth of the rack. The clips are also sleeved on the surface of the inner rod, which is fixedly connected to the base frame and is configured as a square-round rod.

[0014] The technical effects and advantages of this invention are as follows:

[0015] 1. This invention uses two clamping blocks to hold the patient's head under the action of a pulling structure. The weight of the patient's head is applied to the two clamping blocks. Under pressure, the clamping blocks move downwards inside the vertical groove using a movable block. The elastic force of the first spring gradually reduces the pressure of the patient's head on the clamping blocks and prevents the bottom of the clamping blocks from directly impacting the top surface of the base frame. The back of the patient's head will contact the elastic cloth. The pressure of the head on the elastic cloth causes the two ends of the elastic cloth to pull the slide strips downwards inside the arc-shaped groove. During the downward movement of the slide strips, the pull tabs cause the rotating sleeve to rotate and twist the torsion spring. The torsional force of the torsion spring and the elastic force of the first spring are used to ensure that the heads of different patients can be stably confined between the two clamping blocks, increasing the protection of the head.

[0016] 2. This invention utilizes a pulling structure to clamp the patient's head with two clamping blocks. During the movement of the clamping blocks, the inner strip, driven by the vertical frame, also drives the protruding rod to slide inside the groove on the bottom surface of the base frame. After the two clamping blocks clamp the head, the nut is tightened. The spiral effect of the nut and the protruding rod ensures that the top surface of the nut fits tightly against the bottom surface of the base frame. The static friction between the top surface of the nut and the bottom surface of the base frame prevents the inner strip from moving inside the base frame. The inner strip's constraint on the vertical frame improves the horizontal stability of the clamping blocks.

[0017] 3. This invention moves a rack between two frames by pulling it. The meshing effect of the rack and gear causes the gear to drive the rotating frame to rotate. When the rotation of the gear and the rotating frame allows the two clamping blocks to tightly clamp the patient's head, the teeth of the rack and the corresponding locking head snap into place. The elasticity of the elastic sheet causes the end of the locking head to directly engage with the gap between the teeth of the rack, preventing the rack from moving between the two frames and thus limiting the gear. The locking position of the locking head and the rack can be adjusted in real time according to the size of the patient's head, making it convenient for the entire fixing device to clamp the heads of different patients. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the head fixation device for otolaryngology-head and neck surgery according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic cross-sectional view of the base frame according to an embodiment of the present invention;

[0021] Figure 3 This is an embodiment of the present invention. Figure 2 Enlarged view of part A in the diagram;

[0022] Figure 4 This is a schematic diagram of the bottom structure of the base frame according to an embodiment of the present invention;

[0023] In the diagram: 1. Base frame; 2. Clamping block; 3. Movable block; 4. Inner strip; 5. Vertical frame; 6. Groove; 7. Vertical groove; 8. First spring; 9. Limiting rod; 10. Rotating sleeve; 11. Torsion spring; 12. Arc groove; 13. Sliding strip; 14. Pulling piece; 15. Elastic cloth; 16. Elastic rod; 17. Support column; 18. Protruding rod; 19. Nut; 20. Rotating frame; 21. Central column; 22. Fixed rod; 23. Second spring; 24. Gear; 25. Roller; 26. Frame plate; 27. Rack; 28. Clamping head; 29. ​​Elastic sheet; 30. Inner rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides a head fixation device for otolaryngology-head and neck surgery, such as... Figure 1 As shown, the system includes a base frame 1. Clamping blocks 2 for holding heads are provided on both sides of the top surface of the base frame 1. The concave sides of the two clamping blocks 2 are arranged opposite each other, and the convex surfaces of the clamping blocks 2 are movably engaged with a movable structure that pushes the clamping blocks 2 to move using movable blocks 3. The movable structure includes two inner strips 4, which are correspondingly installed inside the base frame 1. Each inner strip 4 corresponds to one clamping block 2. A vertical frame 5 is fixedly installed at the center of the top of each inner strip 4. The outer end of the movable block 3 is correspondingly snapped into the inner side of the vertical frame 5. The top and bottom surfaces of the base frame 1 are provided with grooves 6 that slide with the vertical frame 5. A pulling structure that pushes the inner strips 4 to move is provided at the center of the inner side of the base frame 1. The inner strips 4 use the vertical frame 5 to drive the clamping blocks 2 to move at the top of the base frame 1. When it is necessary to restrain the patient's head, after the patient's head is between the two clamping blocks 2, the two inner strips 4 are pushed closer to each other by the pulling structure. When the inner strips 4 move inside the base frame 1, the inner strips 4 drive the vertical frame 5 to move inside the groove 6. When the vertical frame 5 uses the movable block 3 to drive the clamping blocks 2 to move, the two clamping blocks 2 gradually move closer to each other during the movement. The two clamping blocks 2 restrain and hold the patient's head, so that the patient's head is stably restrained at the top of the base frame 1.

[0026] When the two clamping blocks 2 that are furthest apart move closer to each other under the action of the pulling structure, the two clamping blocks 2 can clamp the heads of different patients in a limited manner, thus ensuring the adaptability of the head fixation device to different patients.

[0027] exist Figure 1 and Figure 2 In this design, the vertical frame 5 is constructed as a square-round rod. Each of the two vertical frames 5 has a vertical groove 7 on its opposite sides that slides with the movable block 3. The outer side of the movable block 3 is flush with the inner side of the vertical frame 5. The clamping block 2 moves up and down within the vertical groove 7 of the vertical frame 5 using the movable block 3. A first spring 8 is installed inside the vertical frame 5, and the movable block 3 is fixedly connected to the top surface of the inner strip 4 using the first spring 8. After the two clamping blocks 2 clamp the patient's head under the pull of the pulling structure, the weight of the patient's head is applied to the two clamping blocks 2. Under pressure, the clamping blocks 2 move downwards within the vertical groove 7 using the movable block 3. During this downward movement, the movable block 3 compresses the first spring 8, gradually reducing the pressure of the patient's head on the clamping blocks 2 using the elastic force of the first spring 8 until the clamping blocks 2 can no longer move downwards. The elastic force of the first spring 8 prevents the bottom of the clamping blocks 2 from directly impacting the top surface of the base frame 1, thus facilitating head protection for the patient.

[0028] exist Figure 2 and Figure 3 In this design, a limiting rod 9 is installed at the top of the clamping block 2. A rotating sleeve 10 is movably sleeved on the surface of the limiting rod 9, and both ends of the rotating sleeve 10 are fixedly connected to the two sides of the top of the clamping block 2 by torsion springs 11. An arc-shaped groove 12 is provided inside the clamping block 2, and a sliding strip 13 is provided inside the arc-shaped groove 12. A pull tab 14 is wound around the surface of the rotating sleeve 10. The bottom end of the pull tab 14 passes through the top of the clamping block 2 and is fixedly connected to the sliding strip 13. An elastic cloth 15 is connected between two opposing clamping blocks 2. When the two clamping blocks 2 are at their farthest distance, the elastic cloth 15 is located between the two clamping blocks 2, and both ends of the elastic cloth 15 pull the two sliding strips 13, so that the two sliding strips 13 are at the lowest point of the arc-shaped groove 12. When the two clamping blocks 2 approach each other, the torsional force of the torsion spring 11 causes the rotating sleeve 10 to rotate on the surface of the limiting rod 9. During the rotation, the rotating sleeve 10 rolls the pull tab 14 onto the surface of the rotating sleeve 10. During the rolling process, the pull tab 14 gradually pulls the slide bar 13 upward inside the arc groove 12. During the upward movement of the slide bar 13 inside the arc groove 12, the two slide bars 13 gradually pull the elastic cloth 15 back into the elastic cloth 15 of the two clamping blocks 2.

[0029] exist Figure 2 and Figure 3In the middle, the two ends of the elastic cloth 15 are fixedly connected to two slide bars 13 respectively. The end of the elastic cloth 15 passes through the center of the bottom end of the clamping block 2, and the elastic cloth 15 is connected to the arc surface of the slide bar 13. The elastic cloth 15 pulls the slide bar 13 to move down inside the arc groove 12. The slide bar 13 moves down smoothly inside the arc groove 12 using the arc surface. Elastic rods 16 are provided on both sides of the bottom surface of the clamping block 2, and the bottom end of the elastic rod 16 does not contact the top surface of the base frame 1. When the patient's head is large, the two clamps 2 clamp the head accordingly. At this time, the back of the patient's head will contact the elastic cloth 15. The pressure of the head on the elastic cloth 15 causes the center of the elastic cloth 15 to move downward. The two ends of the elastic cloth 15 pull the slider 13 downward inside the arc groove 12. During the downward movement, the slider 13 pulls the pull tab 14 out from the surface of the rotating sleeve 10. The rotating sleeve 10 rotates during the pull tab 14 being pulled out, and the rotating sleeve 10 twists the torsion spring 11 when it rotates. By using the torsional force of the torsion spring 11 and the elastic force of the first spring 8, it is convenient to stably limit the heads of different patients between the two clamps 2.

[0030] exist Figure 2 and Figure 4 In the case, support columns 17 are provided at the four corners of the bottom surface of the base frame 1, and a protruding rod 18 is provided at the center of the bottom surface of the inner strip 4, which slides with the groove 6 on the bottom surface of the base frame 1. The length of the protruding rod 18 is less than the length of the support column 17, and a nut 19 is spirally sleeved on the surface of the protruding rod 18. The top surface of the nut 19 is in contact with the bottom surface of the base frame 1. After the two clamping blocks 2 clamp the patient's head using the pulling structure, the inner strip 4, driven by the vertical frame 5, moves the clamping blocks 2. During this movement, the inner strip 4 also drives the protruding rod 18 to slide inside the groove 6 on the bottom surface of the base frame 1 until the two clamping blocks 2 clamp the head. Then, the nut 19 is tightened. The spiral effect of the nut 19 and the protruding rod 18 makes the top surface of the nut 19 fit tightly against the bottom surface of the base frame 1. The static friction between the top surface of the nut 19 and the bottom surface of the base frame 1 prevents the inner strip 4 from moving inside the base frame 1. The inner strip 4's restriction of the vertical frame 5 improves the horizontal stability of the clamping blocks 2.

[0031] After the base frame 1 is placed using multiple support columns 17, since the length of the support column 17 is greater than the length of the protruding rod 18, the inner strip 4 can drive the protruding rod 18 to move.

[0032] exist Figure 1 and Figure 2In the above, the pulling structure includes a rotating frame 20. A central column 21 that rotates with the rotating frame 20 is provided at the center of the inner side of the base frame 1. A fixing rod 22 is provided on one side of the inner side of the base frame 1. The two ends of the fixing rod 22 pass through the inner strips 4 and are fixedly connected to the inner side walls of the base frame 1. A limiting block is fixedly connected at the center of the fixing rod 22, and the length of the limiting block is the same as the outer diameter of the rotating frame 20. The two inner strips 4 are fixedly connected by a second spring 23, and the second spring 23 is sleeved on the surface of the fixing rod 22. The second spring 23 is fixedly connected to the limiting block. When the two inner strips 4 approach each other on the inner side of the base frame 1, the fixing rod 22 restricts the inner strips 4, allowing them to move smoothly on the inner side of the base frame 1. During the process of the two inner strips 4 approaching each other, they compress the second spring 23 on the surface of the fixing rod 22 until the two inner strips 4 can no longer compress the second spring 23. At this point, the distance between the two inner strips 4 is minimized. Since the outer diameter of the limiting block is equal to that of the rotating frame 20, and the length of the second spring 23 after contraction ensures that the inner strips 4 will not contact the rotating frame 20, thus avoiding contact and collision between the inner strips 4 and the rotating frame 20.

[0033] exist Figure 1 and Figure 2 In the process, the pulling structure also includes a gear 24, which is rotatably mounted at the center of the front side of the base frame 1, and the gear 24 meshes with the teeth on the surface of the rotating frame 20. The top and bottom of the circumferential side of the rotating frame 20 are respectively fixedly connected to the inner sides of the two inner strips 4 by means of a roll plate 25. When the inner strip 4 needs to be moved inside the base frame 1, the gear 24 rotates, causing the rotating frame 20 to rotate on the surface of the central column 21. During the rotation of the rotating frame 20, the two rolls 25 are wound up. During the winding process, the rolls 25 pull the inner strip 4 to move inside the base frame 1. The tension of the rolls 25 makes the two inner strips 4 move closer to each other, and the inner strips 4 squeeze the second spring 23. When the gear 24 rotates, causing the rotating frame 20 to rotate in the opposite direction, the elastic force of the second spring 23 rebounds, which causes the two inner strips 4 to separate from each other. During the separation process, the two inner strips 4 pull the rolls 25. The rotating frame 20 rotates in the opposite direction, which makes it easy for the rolls 25 to be pulled out from the surface of the rotating frame 20. At this time, the two clamps 2 separate from each other, and the patient's head separates from the clamps 2.

[0034] exist Figure 1 and Figure 2In the case, the top and bottom of the front side of the base frame 1 are provided with frame plates 26, and a rack 27 is slidably engaged between the two frame plates 26. The rear side of the rack 27 meshes with a gear 24. Both sides of the front side of the base frame 1 are provided with clips 28 corresponding to the rack 27. The clips 28 are fixedly connected to the base frame 1 by multiple elastic pieces 29, and the clips 28 are engaged with the teeth of the rack 27. The clips 28 are sleeved on the surface of the inner rod 30, and the inner rod 30 is fixedly connected to the base frame 1. The inner rod 30 is set as a square-round rod. When it is necessary to control the rotation of gear 24, the rack 27 is pulled to move between the two frame plates 26. The meshing effect of rack 27 and gear 24 causes gear 24 to drive the rotating frame 20 to rotate. When the rotation of gear 24 and rotating frame 20 is coordinated, the two clamping blocks 2 tightly clamp the patient's head. At this time, the teeth of rack 27 and the corresponding locking head 28 are engaged. The elasticity of elastic sheet 29 causes the end of locking head 28 to directly engage with the gap between the teeth of rack 27, preventing rack 27 from moving between the two frame plates 26, thereby completing the limitation of gear 24. The locking position of locking head 28 and rack 27 can be adjusted in real time according to the size of the patient's head, so that the entire fixing device can be used to clamp the heads of different patients.

[0035] Working principle of this invention:

[0036] Refer to the attached diagram in the instruction manual. Figures 1-4 When it is necessary to restrict the patient's head, after the patient's head is between the two clamping blocks 2, the rack 27 is pulled to move between the two frame plates 26. The meshing effect of the rack 27 and the gear 24 causes the gear 24 to drive the rotating frame 20 to rotate. When the gear 24 rotates, it drives the rotating frame 20 to rotate on the surface of the central column 21. During the rotation of the rotating frame 20, the two rolls 25 are wound up. During the winding process, the rolls 25 pull the inner strips 4 to move inside the base frame 1. The pulling force of the rolls 25 makes the two inner strips 4 move closer to each other, and the inner strips 4 compress the second spring 23.

[0037] When the inner strip 4 moves inside the base frame 1, it drives the vertical frame 5 to move inside the groove 6. When the vertical frame 5 uses the movable block 3 to drive the clamping block 2 to move, the two clamping blocks 2 gradually approach each other during the movement, and the two clamping blocks 2 restrict and clamp the patient's head, so that the patient's head is stably restricted to the top of the base frame 1. After the two clamping blocks 2 clamp the head, the elasticity of the elastic piece 29 causes the end of the clamping head 28 to directly engage with the gap between the teeth of the rack 27, preventing the rack 27 from moving between the two frame plates 26, thereby completing the restriction of the gear 24. The clamping position of the clamping head 28 and the rack 27 can be adjusted in real time according to the size of the patient's head, so that the entire fixing device can be used to clamp the heads of different patients.

[0038] Two clamping blocks 2 are clamped on the head. At this time, the back of the patient's head will contact the elastic cloth 15. The pressure of the head on the elastic cloth 15 causes the center of the elastic cloth 15 to move downward. The two ends of the elastic cloth 15 pull the slider 13 downward inside the arc groove 12. During the downward movement, the slider 13 pulls the pull tab 14 out from the surface of the rotating sleeve 10. The rotating sleeve 10 rotates during the pull tab 14 being pulled out, and the rotating sleeve 10 twists the torsion spring 11 when it rotates. By using the torsional force of the torsion spring 11 and the elastic force of the first spring 8, the heads of different patients can be stably confined between the two clamping blocks 2.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A head fixation device for otolaryngology-head and neck surgery, characterized in that: The base frame (1) is provided with clamping blocks (2) for holding heads on both sides of the top surface of the base frame (1). The concave sides of the two clamping blocks (2) are arranged opposite to each other, and the convex surface of the clamping blocks (2) is movably engaged with the moving structure that pushes the clamping blocks (2) to move by means of the movable block (3). The moving structure includes two inner strips (4). The two inner strips (4) are installed on the inner side of the base frame (1) respectively. The two inner strips (4) are arranged in a one-to-one correspondence with the two clamping blocks (2). A vertical frame (5) is fixedly installed at the center of the top of the inner strip (4). The outer end of the movable block (3) is correspondingly snapped into the inner side of the vertical frame (5). The top and bottom surfaces of the base frame (1) are provided with slots (6) that slide with the vertical frame (5). A pulling structure that pushes the inner strips (4) to move is provided at the center of the inner side of the base frame (1). The inner strips (4) use the vertical frame (5) to drive the clamping blocks (2) to move at the top of the base frame (1). A limiting rod (9) is installed at the top of the clamping block (2). A rotating sleeve (10) is movably sleeved on the surface of the limiting rod (9). Both ends of the rotating sleeve (10) are fixedly connected to the two sides of the top of the clamping block (2) by torsion springs (11). An arc groove (12) is provided inside the clamping block (2). A slide bar (13) is provided inside the arc groove (12). A pull tab (14) is wound on the surface of the rotating sleeve (10). The bottom end of the pull tab (14) passes through the top of the clamping block (2). The bottom end of the pull tab (14) is fixedly connected to the slide bar (13). An elastic cloth (15) is connected between the two opposing clamping blocks (2). The elastic cloth (15) is fixedly connected to two slide bars (13) at both ends. The end of the elastic cloth (15) passes through the center of the bottom end of the clamping block (2), and the elastic cloth (15) is connected to the arc surface of the slide bar (13). The elastic cloth (15) pulls the slide bar (13) down inside the arc groove (12). The slide bar (13) moves down smoothly inside the arc groove (12) using the arc surface. Elastic rods (16) are provided on both sides of the bottom surface of the clamping block (2), and the bottom end of the elastic rod (16) does not contact the top surface of the base frame (1). Two clamps (2) are clamped on the head. At this time, the back of the patient's head will contact the elastic cloth (15). The pressure of the head on the elastic cloth (15) causes the center of the elastic cloth (15) to move down. The two ends of the elastic cloth (15) pull the slider (13) to move down inside the arc groove (12). The vertical frame (5) is configured as a square-round rod. The two vertical frames (5) are provided with vertical grooves (7) on opposite sides that slide with the movable block (3). The outer side of the movable block (3) is in contact with the inner side of the vertical frame (5). The clamping block (2) moves up and down inside the vertical groove (7) of the vertical frame (5) using the movable block (3). The inner side of the vertical frame (5) is provided with a first spring (8), and the movable block (3) is fixedly connected to the top surface of the inner strip (4) using the first spring (8). Support columns (17) are provided at the four corners of the bottom surface of the base frame (1). A protruding rod (18) is provided at the center of the bottom surface of the inner strip (4) and slides with the groove (6) on the bottom surface of the base frame (1). The length of the protruding rod (18) is less than the length of the support column (17), and a nut (19) is spirally sleeved on the surface of the protruding rod (18). The top surface of the nut (19) is in contact with the bottom surface of the base frame (1).

2. The head fixation device for otolaryngology-head and neck surgery according to claim 1, characterized in that: The pulling structure includes a rotating frame (20). A central column (21) is provided at the center of the inner side of the base frame (1) to rotate with the rotating frame (20). A fixed rod (22) is provided on one side inside the base frame (1). The two ends of the fixed rod (22) pass through the inner strips (4) and are fixedly connected to the inner side walls of the base frame (1). A limiting block is fixedly connected at the center of the fixed rod (22), and the length of the limiting block is the same as the outer diameter of the rotating frame (20). The two inner strips (4) are fixedly connected by a second spring (23), and the second spring (23) is sleeved on the surface of the fixed rod (22). The second spring (23) is fixedly connected to the limiting block.

3. The head fixation device for otolaryngology-head and neck surgery according to claim 2, characterized in that: The pulling structure also includes a gear (24), which is rotatably mounted at the center of the front side of the base frame (1), and the gear (24) meshes with the teeth on the surface of the rotating frame (20). The top and bottom of the circumferential side of the rotating frame (20) are respectively fixedly connected to the inner sides of the two inner strips (4) by means of a roll plate (25).

4. The head fixation device for otolaryngology-head and neck surgery according to claim 3, characterized in that: The base frame (1) has a frame plate (26) on the top and bottom of the front side. A rack (27) is slidably engaged between the two frame plates (26). The rear side of the rack (27) meshes with a gear (24). Both sides of the front side of the base frame (1) have a clip (28) corresponding to the rack (27). The clip (28) is fixedly connected to the base frame (1) by multiple elastic pieces (29). The clip (28) and the teeth of the rack (27) are correspondingly engaged. The clip (28) is sleeved on the surface of the inner rod (30). The inner rod (30) is fixedly connected to the base frame (1). The inner rod (30) is set as a square-round rod.

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