Prone position ventilation aid

Abstract

The utility model provides a prone position ventilation auxiliary tool, including the shoulder support module of pad in the chest and the head support module of supporting and lifting the head, the head support module swing plug -in is in the shoulder support module, the shoulder support module has the support shell and pad shell, the support shell opening faces upwards and is located in the middle part and sets up the U shape mouth, the support shell is processed with the slope surface mouth that inclines along the both sides of U shape mouth, the pad shell both sides are through setting up the load ring and are suitable for engaging in the U shape mouth rotation and have the inclination of rotation, the support shell is provided with the differential mechanism in, and the inclination of pad shell and head support module same direction rotation is adjusted with differential, and the head support module deflection in load ring is inserted, the utility model discloses realize head and the trunk cooperation angle adjustment, and improve the operation efficiency of medical staff, improve patient comfort, reduce complication risk, convenient dismounting and cleaning.

Description

Technical Field

[0001] This utility model relates to the field of medical assistive devices, specifically a prone ventilation aid. Background Technology

[0002] Prone ventilation is a key treatment for patients with severe respiratory failure, such as those with acute respiratory distress syndrome (ARDS). It reduces mortality to some extent by improving the ventilation / perfusion ratio, promoting dorsal alveolar re-expansion, and reducing atelectasis. However, when patients maintain a prone position for extended periods, bony prominences such as the face, chest, pelvis, and knees are prone to complications such as pressure sores, nerve compression, and even eye injuries due to continuous pressure.

[0003] Currently, commonly used prone positioning aids in clinical practice are mostly static foam pads or fixed support structures, which have significant limitations: First, the head support angle is fixed and cannot be dynamically adjusted according to the patient's head shape or treatment needs, leading to concentrated local pressure on the face; Second, the headrest and shoulder support are adjusted independently, requiring medical staff to operate them separately, which is not only inefficient but also prone to causing non-physiological flexion or rotation of the cervical spine, increasing the risk of nerve damage; Third, there is a lack of independent support modules for key stress points such as the waist, knees, and ankles, making it difficult to achieve individualized positional adaptation; Fourth, some adjustable structures rely on bolts or buckles for locking, which are prone to loosening during patient turning over or changing position, posing a safety hazard of support failure or slippage.

[0004] Therefore, there is an urgent need for a prone ventilation device that is structurally sound, easy to adjust, provides comprehensive support, and has a linkage adjustment function, so as to balance patient comfort, safety, and clinical operation efficiency.

[0005] Therefore, we provide a prone ventilation aid. Utility Model Content

[0006] The main purpose of this invention is to provide a prone ventilation aid that can effectively solve the problems mentioned in the background art, such as inconvenient adjustment of the patient's headrest and shoulder support, increased risk of injury, poor patient fit, and low clinical operation efficiency.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A prone ventilation aid includes a shoulder support module placed on the chest and a head support module that supports the head, wherein the head support module is movably inserted into the shoulder support module. The shoulder support module has a support shell and a pad shell. The support shell has an upward opening and a U-shaped opening in its middle. The support shell is machined with a sloping opening that slopes down along both sides of the U-shaped opening. The pad shell is fitted and rotated in the U-shaped opening by load-bearing rings on both sides and has a rotation angle. A differential mechanism is provided inside the support shell to differentially adjust the angle of rotation of the pad shell and the head support module in the same direction, causing the head support module inserted in the load-bearing ring to deflect. The differential mechanism has a screw shaft and a threaded block. The screw shaft is rotatably connected to the support shell. The threaded block is threadedly connected to the screw shaft and a round rod is fixed thereon. A triangular bracket fixed to the pad shell is sleeved on the round rod. The triangular bracket adjusts the tilt angle of the pad shell as the round rod moves. A rack is fixed to the upper end of the threaded block. A gear column is fixed on the head support module. The gear column meshes with the rack and rotates as the threaded block moves.

[0008] Preferably, the headrest module has a headrest, a forehead support block, and side support blocks. The headrest is U-shaped and has a fixed insertion shaft at one end. The insertion shaft is inserted into the load ring and connected to the gear column. The forehead support block is arc-shaped and is slidably adjusted on the headrest. There are two side support blocks, which are slidably adjusted on the headrest.

[0009] Preferably, the tripod has an adjustment groove, and the round rod is inserted into the adjustment groove.

[0010] Preferably, the support shell has a circular hole with the same diameter and coaxiality as the load ring, and the free end of the gear column extends out of the load ring and is fitted with an anti-detachment cap.

[0011] Preferably, it also includes a lumbar support module, a knee support module, and a wrist support module arranged sequentially along the insertion direction of the head support module and on the same plane as the shoulder support module.

[0012] Preferably, it also includes an adjustment mechanism, which is disposed on the lower side of the shoulder support module. The adjustment mechanism has a frame tube, a crossbeam and multiple slides. The frame tube and the crossbeam each have two and form a frame to install multiple slides. The multiple slides are respectively installed on the shoulder support module, the waist support module, the knee support module and the wrist support module.

[0013] Preferably, the slide has two translation blocks and a mounting platform, a baffle plate is provided in the middle of the support tube to form a sliding cavity with the top of the support tube, and the translation blocks are slidably disposed in the sliding cavity and fixed to the mounting platform.

[0014] Preferably, the bottom of the scaffold tube is provided with an opening groove, and a carrier bar that can move up and down in the opening groove is provided inside the scaffold tube. A friction strip is fixed on the upper side of the carrier bar. A long groove for the friction strip to be inserted is provided on the partition plate. Notches are provided at both ends of the partition plate. A support spring is provided at the notch. The support spring abuts and fits the lower side of the carrier bar against the scaffold tube. The carrier bar moves upward and causes the support spring to yield. The friction strip inserts into the long groove and abuts against the translation block.

[0015] Preferably, the horizontal tilt angle of the pad shell is in the range of -8° to 8°, and the horizontal tilt angle of the head support module is in the range of -80° to 80°.

[0016] Preferably, both ends of the screw shaft extend to the outside of the housing and are equipped with folding rocker arms.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. Achieve coordinated head and torso angle adjustment: Through the built-in differential mechanism, when the pad shell (shoulder support) is finely adjusted within a range of ±8°, the head support module simultaneously achieves a large angle deflection of ±80°, ensuring that the pressure area of ​​the head can switch between the forehead, left skull, and right skull, effectively dispersing facial pressure, reducing the risk of pressure sores and eye injuries, and avoiding excessive twisting of the cervical spine.

[0018] 2. Convenient operation and improved medical efficiency: Simply rotate the folding rocker arm on the screw shaft to simultaneously adjust the shoulder support tilt angle and head orientation, eliminating the cumbersome process of multiple adjustments in traditional assistive devices.

[0019] 3. Modular design for easy cleaning and disinfection: The headrest module is movably connected to the load-bearing ring via a pin and is equipped with a detachable anti-slip cap, supporting quick assembly and disassembly to meet the strict requirements for cleaning and disinfection of assistive devices in hospital infection control.

[0020] 4. Full-body support for optimized ventilation: The addition of lumbar support, knee support, and wrist support modules forms a continuous support chain from the chest to the ankles, keeping the abdomen suspended and reducing pressure on the diaphragm, further improving ventilation efficiency; each module adopts an ergonomic curved design and sponge padding, significantly improving patient comfort.

[0021] 5. Self-locking adjustment mechanism, safe and reliable: The adjustment mechanism adopts the principle of gravity-triggered friction locking - when the patient is not in position, each support module can slide freely to adapt to the body shape; after the patient lies prone, its own weight compresses the support spring, so that the friction strip presses against the slide, automatically locking the position without the need for additional tightening operations, taking into account both adjustment flexibility and use safety. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0024] Figure 2 This is a front view structural diagram of Embodiment 1 of this utility model.

[0025] Figure 3 This utility model Figure 2 A schematic diagram of the cross-sectional structure along the AA direction.

[0026] Figure 4 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0027] Figure 5 This is a structural schematic diagram of Embodiment 3 of the present invention.

[0028] Figure 6 This utility model Figure 5 A partial cross-sectional view of the positioning mechanism.

[0029] Figure 7 This utility model Figure 6 Enlarged structural diagram at point B.

[0030] Figures 1-7 middle: 1. Shoulder support module; 11. Support shell; 12. Pad shell; 13. Load ring; 2. Head support module; 21. Head support bracket; 22. Forehead support block; 23. Side support block; 24. Insert shaft; 3. Differential mechanism; 31. Screw shaft; 32. Threaded block; 33. Round rod; 34. Triangular frame; 35. Rack; 36. Gear column; 4. Waist support module; 5. Knee support module; 6. Wrist support module; 7. Adjustment mechanism; 71. Support tube; 72. Crossbeam; 73. Translation block; 74. Mounting platform; 75. Carrier bar; 76. Friction bar; 77. Support spring. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments. Example

[0032] like Figures 1-4 As shown, a prone ventilation aid includes a shoulder support module 1 placed on the chest and a head support module 2 supporting the head, with the head support module 2 movably connected to the shoulder support module 1. The shoulder support module 1 has a support shell 11 and a pad shell 12. The support shell 11 has an upward opening and a U-shaped opening in its middle. The support shell 11 has a sloping opening that slopes down along both sides of the U-shaped opening. The pad shell 12 is fitted and rotated in the U-shaped opening by a load ring 13 on both sides and has a rotation angle. A differential mechanism 3 is provided in the support shell 11 to adjust the angle of rotation of the pad shell 12 and the head support module 2 in the same direction, causing the head support module 2 inserted in the load ring 13 to deflect. The differential mechanism 3 has a screw shaft 31 and a threaded block 32. The screw shaft 31 is rotatably connected to the support shell 11. The threaded block 32 is threadedly connected to the screw shaft 31 and a round rod 33 is fixed thereon. A triangular frame 34 fixed to the pad shell 12 is sleeved on the round rod 33. The triangular frame 34 adjusts the tilt angle of the pad shell 12 as the round rod 33 moves. A rack 35 is fixed to the upper end of the threaded block 32. A gear column 36 is fixed on the head support module 2. The gear column 36 meshes with the rack 35 and rotates as the threaded block 32 moves.

[0033] It should be noted that a load-bearing ring 13 is placed inside the U-shaped opening in the middle of the support shell 11, which detachably fixes the pad shell 12 to the support shell 11. A sloping opening is provided on the support shell 11 to ensure that there are no obstructions on either side of the chest when the pad shell 12 rotates or tilts. See the specific reference for details. Figure 3 The slope opening is in the shape of an acute triangle, with the acute angle pointing towards its U-shaped opening at an angle of 8°. To improve comfort when lying on the shoulder support module 1, a sponge pad is installed on the top of the support shell 11 on both sides of the pad shell 12 and on the top of the pad shell 12 in a fully covered manner. The sponge pad consists of an outer protective leather and an inner sponge layer. To adjust the deflection angle of the pad shell 12 and the headrest module 2, the horizontal tilt angle of the pad shell 12 is in the range of -8° to 8°. A differential mechanism 3 is used for differential adjustment to increase the deflection angle of the headrest module 2 by multiples. To better rotate the screw shaft 31, folding rocker arms are provided at both ends of the screw shaft 31, which can be folded when not in use and unfolded when in use; the folding rocker arms here use existing technology and are not considered an invention point, so they will not be described in detail here.

[0034] When the screw shaft 31 is rotated using the folding rocker arm, the threaded block 32 on the screw shaft 31 moves in contact with the inner bottom of the support shell 11 as it rotates. The round rod 33 fixed on it moves along with the screw shaft 32, causing the tripod 34 fixed on the pad shell 12 and the head support module 2 to deflect simultaneously. An adjustment groove is machined on the tripod 34. The round rod 33 moves within the adjustment groove according to the movement of the threaded block 32. The rack 35 fixed at the upper end of the threaded block 32 moves along with the threaded block 32. The rack 35 and the gear column... The gear column 36 is deflected by the meshing transmission; to prevent the gear column 36 from being pulled out when the head support module 2 is pulled out, the free end of the gear column 36 is inserted into the load ring 13 on one side and protrudes, and an anti-dislodgement cap is installed and fixed on the free end to block the gear column 36; the gear column 36 deflects in the load ring 13, and the head support module 2 deflects in the U-shaped opening through the load ring 13. The horizontal tilt angle of the head support module 2 is from -80° to 80°.

[0035] Optionally, the head support module 2 has a head support frame 21, a forehead support block 22 and a side support block 23. The head support frame 21 is U-shaped and has a fixed insertion shaft 24 at its end. The insertion shaft 24 is inserted into the load ring 13 and connected to the gear column 36. The forehead support block 22 is arc-shaped and is slidably adjusted on the head support frame 21. There are two side support blocks 23 and they are slidably adjusted on the head support frame 21.

[0036] It should be noted that, for better comfort, both the forehead support block 22 and the side support block 23 are fully covered with soft foam padding. The side support block 23 has a sloping surface on the side that vertically conforms to the face. Both the forehead support block 22 and the side support block 23 are adjusted towards the head, using existing technology with screws and matching nuts fixed at their bottoms. The headrest 21 has mounting grooves facing the head, through which the forehead support block 22 and the side support block 23 are installed. When the headrest module 2 rotates in the same direction as the pad shell 12, its insertion shaft 24 rotates synchronously via the gear column 36 connected to it, causing the headrest 21 to deflect. Furthermore, when the headrest module 2 is in a horizontal position, the pad shell 12 is also in a horizontal position.

[0037] For the insertion of the shaft 24 and the gear post 36, the support shell 11 has a circular hole with the same diameter and coaxiality as the inner ring of the load ring 13. To facilitate cleaning of the head support module 2, the diameter of the gear post 36 is set to be the same as that of the shaft 24. The disassembly can be completed by removing the anti-detachment cap installed at one end of the gear post 36 and pulling out the shaft 24 and the gear post 36, which facilitates cleaning and disinfection of the head support module 2.

[0038] The working principle of this embodiment is as follows: When the patient adjusts their facial orientation to avoid pressure sores or for comfort, the facial orientation angle needs to be adjusted via the screw shaft 31. The screw shaft 31 is rotated using a folding rocker arm, and the threaded block 32 on the screw shaft 31 moves with the rotation. The round rod 33 fixed on it moves along with the rotation, causing the fixed tripod 34 on the pad shell 12 and the headrest module 2 to deflect simultaneously. The round rod 33 moves within the adjustment groove according to the movement of the threaded block 32. The rack 35 fixed at the upper end of the threaded block 32 moves along with the threaded block 32. The rack 35 meshes with the gear column 36, causing the gear column 36 to deflect. The insert shaft 24 rotates synchronously with the gear column 36 connected to it, causing the headrest 21 to deflect. The deflection directions of the pad shell 12 and the headrest module 2 are the same. When the headrest module 2 is in a horizontal position, the pad shell 12 is also in a horizontal position. When the pad shell 12 is in an 8° deflection position, the headrest module 2 is in an 80° deflection position. This design better supports the patient's head, dividing the head area into three parts: the forehead, the sides of the skull, and the forehead. This alternating force distribution among the three parts can further reduce the risk of pressure sores. It also avoids excessive cervical spine rotation that can cause discomfort when adjusting the patient's face orientation alone. Compared to the cumbersome adjustments to the shoulders and head in existing technologies, this solution allows for a one-time adjustment while maintaining comfort. Example

[0039] like Figure 5 As shown, based on Embodiment 1, this embodiment further includes: a lumbar support module 4, a knee support module 5, and a wrist support module 6 arranged sequentially along the insertion direction of the head support module 2 and on the same plane as the shoulder support module 1.

[0040] The lumbar support module 4 is used to support the waist, forming support for the chest and waist, keeping the abdomen suspended when breathing in a prone position, avoiding pressure that affects breathing; the upper side of the lumbar support module 4 has a positioning groove that conforms to the shape of the limb, and the top of the lumbar support module 4 has an arc-shaped design to better maintain comfort; the upper top of the knee support module 5 has an inward-curved design to facilitate knee positioning; the wrist support module 6 has a convex design to facilitate fit around the ankle; and the lumbar support module 4, knee support module 5 and wrist support module 6 are all made of full sponge soft padding to provide better comfort.

[0041] The working principle based on the new technical content in this embodiment is as follows: the lumbar support module 4 is used to support the pelvis at the waist, the knee support module 5 is used to support the patella at the knee, and the wrist support module 6 is used to support the ankle, providing support comfort through sponge soft padding. Example

[0042] like Figures 6-7As shown, based on Embodiment 2, this embodiment further includes: an adjustment mechanism 7, which is disposed on the lower side of the shoulder support module 1. The adjustment mechanism 7 has a support tube 71, a crossbeam 72 and multiple slides. The support tube 71 and the crossbeam 72 each have two and form a frame to install multiple slides. The multiple slides are respectively installed on the shoulder support module 1, the waist support module 4, the knee support module 5 and the wrist support module 6.

[0043] The slide has two translation blocks 73 and a mounting platform 74. A rib plate is provided in the middle of the support tube 71 to form a sliding cavity with the top of the support tube 71. The translation blocks 73 are slidably disposed in the sliding cavity and fixed to the mounting platform 74.

[0044] The bottom of the scaffolding tube 71 is provided with an opening groove. Inside the scaffolding tube 71, there is a support bar 75 that can move up and down in the opening groove. A friction bar 76 is fixed on the upper side of the support bar 75. A long groove for the friction bar 76 to be inserted is provided on the rib plate. Notches are provided at both ends of the rib plate. A support spring 77 is provided at the notch. The support spring 77 abuts and fits the lower side of the support bar 75 against the scaffolding tube 71. When the support bar 75 moves up, the support spring 77 yields. The friction bar 76 inserts into the long groove and abuts against the translation block 73.

[0045] It should be noted that the adjustment mechanism 7 consists of two support tubes 71 and two crossbeams 72. A slide is formed by two translation blocks 73 that slide within the two support tubes 71 respectively, and a mounting platform 74 fixed to the top of the two translation blocks 73. The slide is used to fix the shoulder support module 1, waist support module 4, knee support module 5, and wrist support module 6 using bolts, screws, or rivets. A reinforcing rib is installed inside the support tube 71 to improve overall strength, and a sliding cavity is formed on its upper side, within which the translation blocks 73 slide. A translation groove is also provided on the upper side of the support tube 71 to allow the translation blocks 73 and mounting platform 74 to slide. This allows for the adjustment of the positions of the shoulder support module 1, waist support module 4, knee support module 5, and wrist support module 6. To facilitate locking the position of the slide, a carrier bar 75 is installed inside the support tube 71. The carrier bar 75 is T-shaped and movable. The lower end of the support strip 75 protrudes from the lower end of the support tube 71 and is placed in the opening slot. The friction strip 76 on the top of the support strip 75 corresponds to the long slot of the rib plate. When no patient is lying down, the support springs 77 at both ends of the support tube 71 keep the support strip 75 protruding from the bottom of the support tube 71 through elasticity. When a patient is lying on the shoulder support module 1, waist support module 4, knee support module 5 and wrist support module 6, the adjustment mechanism 7 is subjected to force as a whole. The support strip 75 contacts the force-bearing surface, causing the support springs 77 to be compressed. The friction strip 76 on the support strip 75 contacts the translation block 73 through the long slot, and prevents the translation block 73 from sliding through friction. The friction strip 76 is made of rubber and has raised texture to increase friction. In order to avoid potential danger to the user from the opening at the end of the support tube 71, end caps are provided at both ends of the support tube 71 for protection.

[0046] Based on the new technical content of this embodiment, its working principle is as follows: the sliding block 73 slides within the support tube 71, and the mounting platform 74 slides accordingly, realizing the position adjustment of the shoulder support module 1, lumbar support module 4, knee support module 5, and wrist support module 6; when no patient is lying down, the support springs 77 at both ends of the support tube 71 keep the carrier strip 75 protruding from the bottom of the support tube 71 through elasticity; when a patient lies on the shoulder support module 1, lumbar support module 4, knee support module 5, and wrist support module 6, the adjustment mechanism 7 is subjected to force as a whole, and the carrier strip 75 contacts the force-bearing surface, causing the support spring 77 to be compressed. The friction strip 76 on the carrier strip 75 contacts the sliding block 73 through the long groove, and the friction prevents the sliding block 73 from sliding, thus fixing the shoulder support module 1, lumbar support module 4, knee support module 5, and wrist support module 6; compared with the ordinary bolt fixing in the prior art, fixing can be achieved more quickly.

[0047] The preferred embodiments of the present invention disclosed above are merely illustrative of the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific implementations. The present invention is not limited to the above embodiments; the embodiments and descriptions in the specification are merely outlining the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A prone ventilation aid, characterized in that, It includes a shoulder support module (1) that is placed on the chest and a head support module (2) that supports the head, wherein the head support module (2) is movably inserted into the shoulder support module (1); The shoulder support module (1) has a support shell (11) and a pad shell (12). The support shell (11) has an upward opening and a U-shaped opening in its middle. The support shell (11) has a slope opening that slopes downward along both sides of the U-shaped opening. The pad shell (12) is fitted and rotated in the U-shaped opening by a load ring (13) on both sides and has a rotation angle. The support shell (11) is provided with a differential mechanism (3) to adjust the angle of rotation of the pad shell (12) and the head support module (2) in the same direction, so that the head support module (2) inserted in the load ring (13) deflects. The differential mechanism (3) has a screw shaft (31) and a threaded block (32). The screw shaft (31) is rotatably connected to the support shell (11). The threaded block (32) is threadedly connected to the screw shaft (31) and a round rod (33) is fixed thereon. A triangular frame (34) fixed on the pad shell (12) is sleeved on the round rod (33). The triangular frame (34) adjusts the tilt angle of the pad shell (12) as the round rod (33) moves. A rack (35) is fixed at the upper end of the threaded block (32). A gear column (36) is fixed on the head support module (2). The gear column (36) meshes with the rack (35) and rotates as the threaded block (32) moves.

2. The prone ventilation aid according to claim 1, characterized in that, The head support module (2) has a head support (21), a forehead support block (22) and a side support block (23). The head support (21) is U-shaped and has a fixed insertion shaft (24) at its end. The insertion shaft (24) is inserted into the load ring (13) and connected to the gear column (36). The forehead support block (22) is arc-shaped and is slidably adjusted on the head support (21). There are two side support blocks (23) and they are slidably adjusted on the head support (21).

3. The prone ventilation aid according to claim 1, characterized in that, The tripod (34) has an adjustment groove, and the round rod (33) is inserted into the adjustment groove.

4. The prone ventilation aid according to claim 1, characterized in that, The support shell (11) has a circular hole with the same diameter as the load ring (13), and the free end of the gear column (36) passes through the load ring (13) and is equipped with an anti-detachment cap.

5. The prone ventilation aid according to claim 1, characterized in that, It also includes a waist support module (4), a knee support module (5) and a wrist support module (6) arranged sequentially along the insertion direction of the head support module (2) and the same plane as the shoulder support module (1).

6. The prone ventilation aid according to claim 5, characterized in that, It also includes an adjustment mechanism (7), which is located on the underside of the shoulder support module (1). The adjustment mechanism (7) has a support tube (71), a crossbeam (72) and multiple slides. The support tube (71) and the crossbeam (72) each have two and form a frame to install multiple slides. The multiple slides are respectively installed on the shoulder support module (1), the waist support module (4), the knee support module (5) and the wrist support module (6).

7. The prone ventilation aid according to claim 6, characterized in that, The slide has two translation blocks (73) and a mounting platform (74). A rib plate is provided in the middle of the support tube (71) to form a sliding cavity with the top of the support tube (71). The translation blocks (73) are slidably disposed in the sliding cavity and fixed to the mounting platform (74).

8. The prone ventilation aid according to claim 7, characterized in that, The bottom of the support tube (71) is provided with an opening groove. The support tube (71) is provided with a carrier strip (75) that can move up and down in the opening groove. A friction strip (76) is fixed on the upper side of the carrier strip (75). The partition plate is provided with a long groove for the friction strip (76) to be inserted. Both ends of the partition plate are provided with notches. A support spring (77) is provided at the notch. The support spring (77) abuts and fits the lower side of the carrier strip (75) against the support tube (71). The carrier strip (75) moves up and causes the support spring (77) to yield. The friction strip (76) inserts into the long groove and abuts against the translation block (73).

9. The prone ventilation aid according to claim 1, characterized in that, The horizontal tilt angle of the pad shell (12) is -8° to 8°, and the horizontal tilt angle of the head support module (2) is -80° to 80°.

10. The prone ventilation aid according to claim 1, characterized in that, Both ends of the screw shaft (31) extend to the outside of the support shell (11) and are equipped with folding rocker arms.

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