Prone position headstock
By designing a ball joint and slider structure, combined with a quick-release wrench mechanism and positioning pins, the problem of the traditional prone head frame not being able to be freely adjusted is solved, enabling multi-directional angle and position adjustment of the head frame, improving patient comfort and surgical precision.
Patent Information
- Application Number
- CN202423120225.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Traditional prone head frames cannot freely adjust their position and angle, limiting the precise settings that medical staff can make according to patient needs and surgical requirements, leading to patient discomfort and reduced surgical accuracy.
It adopts a ball joint and slider structure, combined with a quick-release wrench mechanism, positioning pins and guide block design, to realize multi-directional angle adjustment and position adjustment of the head frame, and ensures stability and precise control through a variety of positioning pins and pulley systems.
It enables free adjustment of the head frame in multiple directions and angles to accommodate different head sizes, improving patient comfort and surgical precision.
Smart Images
Figure CN223787708U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field especially, it relates to a prone position headstock. BACKGROUND
[0002] In the medical field, especially in surgical operation, radiotherapy and some diagnostic processes, patients often need to maintain a specific body position to ensure the accuracy and safety of the operation. Prone position is a common body position, especially in spinal surgery, neurosurgery and other surgeries that require exposure of the back or abdomen. In order to provide stable head support during these surgical procedures, a specially designed headstock is usually used.
[0003] Although the traditional prone position headstock can provide basic head support, it still has limitations in actual application. The position of the traditional headstock is usually fixed, or can only be adjusted within a limited range. This limits the ability of medical staff to accurately set the head position according to the specific needs of patients and the requirements of the operation. The angle adjustment range of the traditional headstock is limited, and it can only be inclined or rotated simply, and cannot realize fine adjustment in multiple directions. This limitation may cause patients to feel uncomfortable during long-term operation, and even affect the accuracy and effect of the operation.
[0004] The utility model aims at solving the problem that the traditional prone position headstock cannot freely adjust the position and angle of the headstock. UTILITY MODEL CONTENTS
[0005] The utility model adopts the following technical scheme to solve the problem that the traditional prone position headstock cannot freely adjust the position and angle of the headstock.
[0006] A prone position headstock, comprising a crossbar, a headstock mechanism is installed on the crossbar, the headstock mechanism comprises a cylinder, a ball joint is sleeved in the cylinder, the ball joint is fixedly connected with a connecting block, a rod body is sleeved in the connecting block, sliding blocks are installed at both ends of the rod body, and the sliding blocks are slidingly connected with the rod body.
[0007] The prone position headstock described above, the crossbar is sleeved with a quick-release wrench mechanism, one side of the quick-release wrench mechanism is installed with a connecting rod, one end of the connecting rod is installed with a clamping block, the clamping block is installed with a support arm, one end of the support arm is sleeved in the clamping block, a third positioning pin is sleeved in the clamping block, the third positioning pin is threadedly connected with the clamping block, and one end of the support arm is fixedly connected with the cylinder.
[0008] As described above, in a prone head frame, a second connecting arm is provided on the outer sleeve of the rod body. The second connecting arm is snapped into the rod body. A first connecting arm is hinged to one end of the second connecting arm. A fourth positioning pin is sleeved inside one end of both the second connecting arm and the first connecting arm. Both the second connecting arm and the first connecting arm are threadedly connected to the fourth positioning pin.
[0009] In the prone headrest described above, one end of the second connecting arm and one end of the first connecting arm are provided with teeth, and the teeth at one end of the second connecting arm mesh with the teeth at one end of the first connecting arm.
[0010] In the prone headrest described above, one end of the first connecting arm is equipped with a pulley, and the first connecting arm is rotatably connected to the pulley.
[0011] As described above, in a prone head frame, a first positioning pin is fitted inside one end of the cylinder, and the first positioning pin is threadedly connected to the cylinder. A second positioning pin is fitted inside the slider, and the second positioning pin is threadedly connected to the slider.
[0012] As described above, in a prone headrest, a threaded hole is provided on one side of the connecting block.
[0013] In the prone headrest described above, one end of the slider is fixedly connected to a support block.
[0014] As described above, in a prone head frame, a plurality of guide rail blocks are installed on the crossbar. The guide rail blocks are sleeved on the outside of the crossbar, and the crossbar is slidably connected to the guide rail blocks. A sliding groove is provided on one side of the guide rail block.
[0015] As described above, in a prone headrest, the guide block has a positioning hole, the inner wall of the positioning hole has a thread, the crossbar has a slot, and the side wall of the slide groove is fitted with a fifth positioning pin.
[0016] Implementing the embodiments of this utility model has the following beneficial effects:
[0017] 1. In this utility model, the ball joint can rotate freely inside the cylinder, supporting the connecting block to perform multi-directional movements, including tilting forward and backward, and rotating left and right, so that doctors can accurately set the patient's head posture according to the specific needs of surgery or examination. The slider can slide freely on the rod, allowing the distance between the support blocks to be changed by moving the slider, adapting to different head sizes.
[0018] In summary, this invention solves the problem that traditional prone headrests cannot freely adjust their position and angle. Attached Figure Description
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0020] Figure 1 is a whole structure schematic diagram of a prone position head frame of the utility model.
[0021] Figure 2 is another angle structure schematic diagram of a prone position head frame of the utility model.
[0022] Figure 3 is another angle structure schematic diagram of a prone position head frame of the utility model.
[0023] Figure 4 is Figure 1 the structure schematic diagram of A in the enlarged view. Specific implementation
[0024] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.
[0025] As Figures 1 to 4 shown, the utility model provides a prone position head frame, including crossbar 1, the crossbar 1 is installed with head frame mechanism 2, the head frame mechanism 2 includes cylinder 23, the cylinder 23 is equipped with ball joint 24, ball joint 24 is fixedly connected with connecting block 25, the connecting block 25 is equipped with rod body 26, both ends of rod body 26 are installed with sliding block 28, sliding block 28 is connected with rod body 26 slidingly, one end of sliding block 28 is fixedly connected with support block 27, and support block 27 is used for supporting patient's head. Ball joint 24 is surrounded by cylinder 23, but can rotate freely therein, so that ball joint 24 can support connecting block 25 to carry out all-around angle adjustment, including forward and backward inclination, left and right rotation and the action of multiple directions, so as to realize the angle adjustment of head frame, so that the doctor can accurately set the head posture of patient according to the specific needs of operation or examination. Rod body 26 passes through connecting block 25, and sliding block 28 is installed at both ends thereof, sliding block 28 can slide freely on rod body 26, so that the distance between support blocks 27 can be changed by moving the sliding block, so as to adapt to different sizes of head.
[0026] Further, as a preferred embodiment of the present application but not limited, the crossbar 1 is provided with a quick release wrench mechanism 212, one side of the quick release wrench mechanism 212 is provided with a connecting rod 211, one end of the connecting rod 211 is provided with a clamping block 213, the clamping block 213 is provided with a support arm 21, one end of the support arm 21 is sleeved in the clamping block 213, the clamping block 213 is sleeved with a third positioning pin 214, the third positioning pin 214 is threadedly connected with the clamping block 213, and one end of the support arm 21 is fixedly connected with the cylinder 23. The quick release wrench mechanism 212 is sleeved on the crossbar 1, so as to allow the user to quickly lock or adjust the position of the headrest mechanism 2. When adjustment is needed, the headrest mechanism 2 can be loosened or tightened by operating the quick release wrench. One end of the support arm 21 is sleeved in the clamping block 213, the clamping block 213 clamps or releases the support arm 21 through the third positioning pin 214, specifically, when the angle of the support arm 21 is adjusted, the third positioning pin 214 is rotated to press the support arm 21, so that the support arm 21 is clamped in the set position firmly. The adjustment angle and range of the headrest are further improved.
[0027] Further, as a preferred embodiment of the present application but not limited, the rod body 26 is sleeved with a second connecting arm 215, the second connecting arm 215 is clamped with the rod body 26, one end of the second connecting arm 215 is hingedly connected with a first connecting arm 210, one end of the second connecting arm 215 and the first connecting arm 210 is sleeved with a fourth positioning pin 216, and the second connecting arm 215 and the first connecting arm 210 are threadedly connected with the fourth positioning pin 216. One end of the first connecting arm 210 is provided with a pulley, and the first connecting arm 210 is rotationally connected with the pulley. The second connecting arm 215 is sleeved on the rod body 26 and fixed by clamping. This design allows the second connecting arm 215 to slide along the rod body 26 without rotating around the rod body 26, one end of the first connecting arm 210 is hingedly connected with the second connecting arm 215, so that the first connecting arm 210 can rotate freely within a certain range, and the flexibility of the headrest mechanism 2 is increased. The rotation of the fourth positioning pin 216 can press the first connecting arm 210 and the second connecting arm 215, so as to realize the positioning of the two, and further stably maintain the set angle. The pulley is connected by a rope, and the headrest can be pulled. When the rope is pulled, the direction and size of the force can be changed through the pulley, so as to more accurately control the position and angle of the headrest. Since the rope pulls the headrest, the deformation of the headrest can be avoided.
[0028] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, one end of the second connecting arm 215 and one end of the first connecting arm 210 are both provided with teeth 217, and the teeth 217 at one end of the second connecting arm 215 and the teeth 217 at one end of the first connecting arm 210 engage with each other. Once the second connecting arm 215 and the first connecting arm 210 are adjusted to the required angle, the teeth 217 can be tightly engaged by tightening the fourth positioning pin 216, thereby preventing any accidental movement or loosening and ensuring the stability of the headframe during traction.
[0029] Furthermore, as a preferred embodiment of the invention and not a limitation thereof, a first positioning pin 22 is fitted inside one end of the cylinder 23, and the first positioning pin 22 is threadedly connected to the cylinder 23. A second positioning pin 29 is fitted inside the slider 28, and the second positioning pin 29 is threadedly connected to the slider 28. By rotating the first positioning pin 22, it can be moved forward or backward inside the cylinder 23 along the thread direction. When the first positioning pin 22 is screwed into the cylinder 23, it applies an inward pressure to the ball joint 24. This pressure makes the ball joint 24 tightly pressed against the inner wall of the cylinder 23, thereby restricting the degree of freedom of the ball joint 24 and preventing it from rotating freely. Even under long-term use or external force, the ball joint 24 will not move easily. If it is necessary to readjust the angle of the ball joint 24, simply rotate the first positioning pin 22 in the opposite direction to reduce its pressure on the ball joint 24, and the ball joint 24 can rotate freely. At this time, a new angle adjustment can be made. After the adjustment is completed, tighten the first positioning pin 22 again to relock the position of the ball joint 24. By rotating the second locating pin 29, it can be moved forward or backward along the thread direction inside the slider 28. When the second locating pin 29 is screwed into the slider 28, it applies pressure to the slider 28, which makes the slider 28 tightly pressed against the rod 26, thereby restricting the degree of freedom of the slider 28 and preventing it from sliding freely. If it is necessary to readjust the position of the slider 28, simply rotate the second locating pin 29 in the opposite direction to reduce its pressure on the slider 28, and the slider 28 can slide freely on the rod 26. At this time, a new position adjustment can be made. After the adjustment is completed, tighten the second locating pin 29 again to relock the position of the slider 28.
[0030] Furthermore, as a preferred embodiment of the invention and not a limitation thereof, a threaded hole is provided on one side of the connecting block 25. By screwing a bolt into the threaded hole, the bolt presses against the rod 26, thereby pressing the rod 26 tightly against the connecting block 25, thus restricting the degree of freedom of the rod 26 and preventing it from sliding freely.
[0031] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, a plurality of guide rail blocks 3 are installed on the crossbar 1. The guide rail blocks 3 are sleeved on the crossbar 1, and the crossbar 1 and the guide rail blocks 3 are slidably connected. A sliding groove 4 is formed on one side of the guide rail block 3, and a positioning hole 31 is formed on the guide rail block 3. The inner wall of the positioning hole 31 is threaded. A retaining groove 11 is formed on the crossbar 1, and a fifth positioning pin 5 is sleeved on the inner side wall of the sliding groove 4. The sliding groove 4 is used to connect with external components. The guide rail blocks 3 are sleeved on the crossbar 1 and can slide freely on the crossbar 1, allowing the user to adjust the position of the guide rail blocks 3 on the crossbar 1 as needed. By screwing a bolt with corresponding threads into the positioning hole 31, the guide rail blocks 3 can be locked to prevent them from sliding on the crossbar 1. The retaining groove 11 is formed on the crossbar 1. The retaining groove 11 is designed to cooperate with the bolt in the positioning hole 31. When the bolt is tightened, part of the bolt will be embedded in the retaining groove 11, thereby preventing the guide rail blocks 3 from rotating.
[0032] Optionally, in some embodiments, the guide rail block 3 is provided with a locking block that matches the locking slot 11. When the locking block of the guide rail block 3 is embedded in the locking slot 11, it provides additional mechanical locking and increases the stability of the structure.
[0033] Example 1:
[0034] This invention proposes a prone headrest, comprising a crossbar 1, on which a headrest mechanism 2 is mounted. The headrest mechanism 2 includes a cylindrical body 23, within which a ball joint 24 is fitted. A connecting block 25 is fixedly connected to the ball joint 24, and a rod 26 is fitted inside the connecting block 25. Slider blocks 28 are mounted at both ends of the rod 26, and the sliders 28 are slidably connected to the rod 26. A support block 27 is fixedly connected to one end of each slider 28, and the support block 27 supports the patient's head. The ball joint 24 is surrounded by the cylindrical body 23 but can rotate freely within it, thus enabling the ball joint 24 to support the connecting block 25 for omnidirectional angle adjustments, including forward and backward tilting, left and right rotation, and other multi-directional movements. This allows for headrest angle adjustment, enabling doctors to precisely set the patient's head posture according to the specific needs of surgery or examination. The rod 26 passes through the connecting block 25 and is equipped with sliders 28 at both ends. The sliders 28 can slide freely on the rod 26, so that the distance between the support blocks 27 can be changed by moving the sliders, thereby adapting to different sizes of heads.
[0035] A first positioning pin 22 is fitted inside one end of the cylinder 23, and the first positioning pin 22 is threadedly connected to the cylinder 23. A second positioning pin 29 is fitted inside the slider 28, and the second positioning pin 29 is threadedly connected to the slider 28. By rotating the first positioning pin 22, it can move forward or backward inside the cylinder 23 along the thread direction. When the first positioning pin 22 is screwed into the cylinder 23, it applies an inward pressure to the ball joint 24. This pressure makes the ball joint 24 tightly pressed against the inner wall of the cylinder 23, thereby restricting the degree of freedom of the ball joint 24 and preventing it from rotating freely. Even under prolonged use or external force, the ball joint 24 will not move easily. If it is necessary to readjust the angle of the ball joint 24, simply rotate the first positioning pin 22 in the opposite direction to reduce its pressure on the ball joint 24, allowing the ball joint 24 to rotate freely. At this point, a new angle adjustment can be made. After the adjustment is completed, tighten the first positioning pin 22 again to relock the position of the ball joint 24. By rotating the second locating pin 29, it can be moved forward or backward along the thread direction inside the slider 28. When the second locating pin 29 is screwed into the slider 28, it applies pressure to the slider 28, which makes the slider 28 tightly pressed against the rod 26, thereby restricting the degree of freedom of the slider 28 and preventing it from sliding freely. If it is necessary to readjust the position of the slider 28, simply rotate the second locating pin 29 in the opposite direction to reduce its pressure on the slider 28, and the slider 28 can slide freely on the rod 26. At this time, a new position adjustment can be made. After the adjustment is completed, tighten the second locating pin 29 again to relock the position of the slider 28.
[0036] A threaded hole is provided on one side of the connecting block 25. By screwing a bolt into the threaded hole, the bolt presses against the rod 26, thereby pressing the rod 26 tightly against the connecting block 25, thus restricting the degree of freedom of the rod 26 and preventing it from sliding freely.
[0037] The crossbar 1 is fitted with a quick-release wrench mechanism 212. A connecting rod 211 is installed on one side of the quick-release wrench mechanism 212, and a clamping block 213 is installed at one end of the connecting rod 211. A support arm 21 is installed on the clamping block 213, and one end of the support arm 21 is fitted inside the clamping block 213. A third positioning pin 214 is fitted inside the clamping block 213 and is threadedly connected to the clamping block 213. One end of the support arm 21 is fixedly connected to the cylinder 23. The quick-release wrench mechanism 212 is fitted on the crossbar 1, allowing the user to quickly lock or adjust the position of the head frame mechanism 2. When adjustment is needed, the head frame mechanism 2 can be loosened or tightened simply by operating the quick-release wrench. One end of the support arm 21 is fitted inside the clamping block 213. The clamping block 213 clamps or releases the support arm 21 via the third positioning pin 214. Specifically, after adjusting the angle of the support arm 21, rotating the third positioning pin 214 causes it to press against the support arm 21, thereby firmly clamping the support arm 21 in the set position. This further improves the adjustment angle and range of the headframe.
[0038] The rod 26 is fitted with a second connecting arm 215, which is snapped onto the rod 26. A first connecting arm 210 is hinged to one end of the second connecting arm 215. A fourth positioning pin 216 is fitted inside one end of both the second connecting arm 215 and the first connecting arm 210, and both are threadedly connected to the fourth positioning pin 216. A pulley is mounted on one end of the first connecting arm 210, and the first connecting arm 210 is rotatably connected to the pulley. The second connecting arm 215 is fitted onto the rod 26 and fixed by a snap-fit mechanism. This design allows the second connecting arm 215 to slide along the rod 26 without rotating around it. The hinged connection between one end of the first connecting arm 210 and the second connecting arm 215 allows the first connecting arm 210 to rotate freely within a certain range, increasing the flexibility of the headframe mechanism 2. Rotating the fourth positioning pin 216 causes the first connecting arm 210 and the second connecting arm 215 to press against each other, thereby achieving their positioning and further stabilizing the set angle. A rope connected to a pulley allows for traction of the headframe. When the rope is pulled, the pulley changes the direction and magnitude of the force, allowing for more precise control of the headframe's position and angle. Because the rope traction prevents deformation of the headframe.
[0039] Both the second connecting arm 215 and the first connecting arm 210 have teeth 217 at one end, which mesh with the teeth 217 at one end of the second connecting arm 215 and the first connecting arm 210. Once the second connecting arm 215 and the first connecting arm 210 are adjusted to the required angle, the teeth 217 can be tightly engaged by tightening the fourth positioning pin 216, thereby preventing any accidental movement or loosening and ensuring the stability of the headframe during traction.
[0040] The implementation method of Example 2 is as follows:
[0041] The difference between Embodiment 2 and Embodiment 1 is that several guide rail blocks 3 are installed on the crossbar 1. The guide rail blocks 3 are sleeved on the outside of the crossbar 1, and the crossbar 1 and the guide rail blocks 3 are slidably connected. A sliding groove 4 is provided on one side of the guide rail block 3, and a positioning hole 31 is provided on the inner wall of the positioning hole 31. A thread is provided on the inner wall of the positioning hole 31. A retaining groove 11 is provided on the crossbar 1, and a fifth positioning pin 5 is sleeved on the inner wall of the sliding groove 4. The sliding groove 4 is used to connect with external components. The guide rail blocks 3 are sleeved on the outside of the crossbar 1 and can slide freely on the crossbar 1, allowing the user to adjust the position of the guide rail blocks 3 on the crossbar 1 as needed. By screwing a bolt with corresponding threads into the positioning hole 31, the guide rail blocks 3 can be locked to prevent them from sliding on the crossbar 1. The retaining groove 11 is provided on the crossbar 1. The retaining groove 11 is designed to cooperate with the bolt in the positioning hole 31. When the bolt is tightened, part of the bolt will be embedded in the retaining groove 11, thereby preventing the guide rail blocks 3 from rotating.
[0042] Specifically, the working principle of this utility model is as follows:
[0043] The prone headrest allows for omnidirectional angle and position adjustment via ball joints 24 and sliders 28. Ball joints 24 rotate freely within the cylinder 23, supporting multi-directional movement of the connecting blocks 25. The position of the ball joints 24 is locked or released via a threaded connection of the first locating pin 22. The sliders 28 at both ends of the rod 26 can slide freely on the rod and are locked via second locating pins 29, thereby changing the distance between the support blocks 27 to accommodate different head sizes. Threaded holes on the connecting blocks 25 allow the rod 26 to be secured with bolts, preventing it from sliding freely.
[0044] A quick-release wrench mechanism 212 is mounted on the crossbar 1, allowing for rapid locking or unlocking of the headframe mechanism 2. A third locating pin 214 within the clamping block 213 clamps or releases the support arm 21, ensuring its stability at a set angle. The second connecting arm 215 and the first connecting arm 210 engage with each other via a fourth locating pin 216 and toothed threads 217, providing precise angle adjustment and mechanical locking to prevent accidental movement during traction. The rope-connecting pulley system further enhances the position control accuracy and stability of the headframe.
[0045] In summary, this invention solves the problem that traditional prone headrests cannot freely adjust their position and angle.
[0046] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0047] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.
Claims
1. A prone position headrest comprising a crossbar (1), characterized in that The crossbar (1) is provided with a headrest mechanism (2), the headrest mechanism (2) comprises a cylinder (23), the cylinder (23) is provided with a ball joint (24), the ball joint (24) is fixedly connected with a connecting block (25), the connecting block (25) is provided with a rod body (26), both ends of the rod body (26) are provided with a sliding block (28), and the sliding block (28) is in sliding connection with the rod body (26).
2. A prone position headrest according to claim 1, wherein, The crossbar (1) is provided with a quick release handle mechanism (212), one side of the quick release handle mechanism (212) is provided with a connecting rod (211), one end of the connecting rod (211) is provided with a clamping block (213), the clamping block (213) is provided with a supporting arm (21), one end of the supporting arm (21) is provided in the clamping block (213), the clamping block (213) is provided with a third positioning pin (214), the third positioning pin (214) is in threaded connection with the clamping block (213), and one end of the supporting arm (21) is fixedly connected with the cylinder (23).
3. A prone position headrest according to claim 1, wherein The rod body (26) is provided with a second connecting arm (215), the second connecting arm (215) is in clamping connection with the rod body (26), one end of the second connecting arm (215) is hingedly provided with a first connecting arm (210), the second connecting arm (215) and the first connecting arm (210) are both provided with a fourth positioning pin (216), and the second connecting arm (215) and the first connecting arm (210) are both in threaded connection with the fourth positioning pin (216).
4. A prone position headrest according to claim 3, wherein, The second connecting arm (215) and the first connecting arm (210) are both provided with a thread (217), and the thread (217) of one end of the second connecting arm (215) is in meshing connection with the thread (217) of one end of the first connecting arm (210).
5. A prone position headrest according to claim 3, wherein, One end of the first connecting arm (210) is provided with a pulley, and the first connecting arm (210) is in rotary connection with the pulley.
6. A prone position headrest according to claim 1, wherein, One end of the cylinder (23) is provided with a first positioning pin (22), the first positioning pin (22) is in threaded connection with the cylinder (23), the sliding block (28) is provided with a second positioning pin (29), and the second positioning pin (29) is in threaded connection with the sliding block (28).
7. A prone position headrest according to claim 1, wherein One side of the connecting block (25) is provided with a threaded hole.
8. A prone position headrest according to claim 1, wherein, One end of the sliding block (28) is fixedly connected with a supporting block (27).
9. A prone position headrest according to claim 1, wherein, The crossbar (1) is provided with a plurality of guide rail blocks (3), the guide rail blocks (3) are provided on the crossbar (1), the crossbar (1) is in sliding connection with the guide rail blocks (3), and one side of the guide rail blocks (3) is provided with a sliding groove (4).
10. A prone position headrest according to claim 9, wherein, The guide rail blocks (3) are provided with positioning holes (31), the inner walls of the positioning holes (31) are provided with threads, the crossbar (1) is provided with a clamping groove (11), and the side wall of the sliding groove (4) is provided with a fifth positioning pin (5).