A device for assisting body position change in prone position ventilation of critical patients

Abstract

The application discloses a kind of auxiliary body position change device of severe patient prone position ventilation, it is related to medical auxiliary instrument technical field, including bed body part, lifting part and pulling part, realize the linkage effect of single power input synchronous drive lifting part and pulling part.The linkage design simplifies the power structure of device, reduces the number of parts and failure risk, while it can make the patient be pulled by pulling part to one side close to the bed sheet, first with the inclined state formed by lifting part lifting, through self gravity and bed sheet continue to move and occur similar self-rotating effect, finally naturally realize turning over, medical staff maintains the ventilation of severe patient's head and neck pipeline, single person can complete the turning over and maintenance work of previous each needing multiple operations.

Description

Technical Field

[0001] This invention relates to the field of medical assistive device technology, specifically to an assistive body position change device for prone ventilation of critically ill patients. Background Technology

[0002] In the field of critical care medicine, prone ventilation is a key treatment for improving patients' physical condition. By changing patients from a supine to a prone position, lung tissue compression can be effectively reduced, secretion drainage can be promoted, and the mortality rate from respiratory failure can be decreased. However, critically ill patients often have multiple organ function support needs and require multiple devices and tubes such as endotracheal tubes, infusion tubes, and monitoring leads. These tubes are mostly concentrated in critical areas such as the neck and face, which means that changing the patient's position requires multiple nursing staff to perform the procedure.

[0003] Currently, the clinical turning method is done manually, mainly with the assistance of bed sheets. Multiple medical staff work together to first move the patient to one side of the bed using the bed sheet, then assist the patient to turn to the side, and finally adjust to the prone position with soft pillows to support the head, chest and abdomen. At the same time, the bed sheet is changed and the new bed sheet fills the position where the old bed sheet was. During manual turning, the tubes in the neck and face are easily pulled, squeezed or displaced. If the endotracheal tube is displaced, it may cause ventilation interruption. Pulling on other tubes may cause fatal risks such as tube blockage and infection. In addition, medical staff need to pay attention to both the tubes and the turning movement, which increases the difficulty of the operation. Manual transfer and turning require continuous effort from medical staff, and each operation takes a long time. In addition, improper coordination can cause skin friction damage to the patient, or the patient's back can be overextended due to incorrect positioning, reducing the patient's comfort. Some patients are heavy, and medical staff may even suffer muscle strains during the transfer process. In summary, an auxiliary body position change device that simplifies the operation process and stabilizes the tubing was designed to address practical clinical needs. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, the present invention provides an auxiliary body position change device for prone ventilation in critically ill patients.

[0005] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution: An auxiliary positional change device for prone ventilation of critically ill patients includes a bed body, a lifting part, and a pulling part. The bed body includes a bed board, and a lifting part is provided on the upper side of the bed board. The lifting part includes a lifting component that rotates symmetrically upward. A pulling part is provided on one side of the lifting component. The pulling part includes a fixing component for fixing the bed sheet and a driving component for driving the fixing component to rotate.

[0006] Furthermore, a middle plate is fixedly connected to the upper middle of the bed board, a first rotating shaft is rotatably connected to one side of the middle plate, and a second rotating shaft is rotatably connected to the other side of the middle plate. The lifting assembly includes a first side plate and a second side plate, the first side plate is rotatably connected to the first rotating shaft, and the second side plate is rotatably connected to the second rotating shaft. The first and second side panels on both sides allow the patient to tilt, assisting medical staff in turning the patient over. At the same time, when the opposite side is lifted, the patient's drop during the turning process will not be too large. After the medical staff places a pillow, the patient can be turned over smoothly without tiring the medical staff. Furthermore, the design of the middle panel prevents the first and second side panels on both sides from squeezing the patient's limbs near the middle panel when they are closed, ensuring that the limbs on the side closest to the middle panel have space when turning over.

[0007] Furthermore, a connecting plate is fixedly connected to one side of the bed board, and a drive motor is fixedly connected to the connecting plate. The output shaft of the drive motor is fixedly connected to the first rotating shaft. A drive gear is fixedly connected at the connection position between the output shaft of the drive motor and the first rotating shaft. A driven gear is fixedly connected to the second rotating shaft at the end near the drive gear. The drive gear and the driven gear are meshed together.

[0008] Furthermore, a fixing frame is fixedly connected to the side of the second side plate away from the first side plate, and a lower plate is fixedly connected to the fixing frame. Side frames are fixedly connected to both ends of the lower plate. A manual end is rotatably connected to one side of the side frame outside the two side frames, and a drive end is provided on the other side of the side frame outside the two side frames. A rotating round frame is rotatably connected to the side frame inside the two side frames. A rotating round frame is fixedly connected to the manual end on one side, and a rotating round frame is fixedly connected to the drive end on the other side. Two side plates are provided between the two rotating round frames. Sliders are fixedly connected to both ends of the plates. The rotating round frames also have sliding grooves. The sliders are slidably connected in the sliding grooves. The lower sides of both ends of the upper frame are fixedly connected to locking balls. The lower sides of both ends of the lower frame have locking grooves. The locking balls engage with the locking grooves.

[0009] Furthermore, a lever plate is fixedly connected to the side of the frame away from the other frame, and the width of the lever plate is greater than the width of the frame.

[0010] Furthermore, a lower pad is fixedly connected to the side of the lower frame near the upper frame, and an upper pad is fixedly connected to the side of the upper frame near the lower frame, with the lower pad and the upper pad being staggered.

[0011] Furthermore, the drive end includes a motor, and a fixing block is fixedly connected to a side frame near the motor, and the motor is fixedly connected to the fixing block.

[0012] Furthermore, the driving end includes a driving shaft, a pulley is fixedly connected to the second rotating shaft, a pulley is fixedly connected to the driving shaft, and a ring belt is wound between the two pulleys; With a single input to the drive motor, both the lifting and pulling parts are simultaneously activated. As the patient is pulled towards one side by the pulling part, the tilting state caused by the lifting part results in the patient turning over, creating an unexpected turning effect.

[0013] Furthermore, end plates are fixedly connected to both ends of the bed board along its length, a base frame is fixedly connected to the underside of the bed board, and bottom wheels are fixedly connected to the underside of the base frame.

[0014] Furthermore, the first and second side plates are provided with a four-fold structure perpendicular to the length direction.

[0015] Furthermore, the fixing frame consists of a side frame, a side shaft, and a middle frame. The side frame is fixedly connected to the end plate and the second side plate. A rotating shaft is fixedly connected to the lower side of the side frame. The middle frame is rotatably connected to the rotating shaft. The middle frame is fixedly connected to the lower plate. Limiting balls are fixedly connected to both sides of the middle frame. The side frame has ball grooves that engage with the limiting balls. The fixing block is fixedly connected with a retaining rod, which engages with the connecting plate.

[0016] The beneficial effects of this invention are: An auxiliary positional change device for prone ventilation in critically ill patients enhances the safety of positional changes. The device utilizes a central plate fixed to the upper middle of the bed board to effectively prevent compression of the patient's limbs near the central plate when the first and second side plates are closed, providing ample space for the limbs near the central plate during patient turning and minimizing the risk of limb compression injury. Simultaneously, the four-fold structure along the length of the first and second side plates conforms to the patient's body curve relative to their existing bed position. Combined with the staggered lower and upper pads on the pull-out mechanism, the bed sheet is effectively secured. Moving the bed sheet stabilizes the patient's body. During the entire assisted operation, only one side of the patient needs to be lifted and tilted. The final prone position change is controlled by medical staff, ensuring stable overall ventilation without excessive fluctuations. The final position change is also under the control of medical staff, ensuring the safety of the tubing and improving the comfort and safety of patient positional changes.

[0017] At the same time, it reduces the workload of medical staff and improves nursing efficiency. With the lifting components consisting of the first and second side plates that rotate symmetrically upward, the patient can be tilted smoothly without the need for medical staff to manually lift the patient. During the patient's turning process, due to the synergistic effect of the lifting components on both sides, the body drop is small. Medical staff only need to place a pillow, and the device can assist in completing the patient's turning action. The tilted patient that has been lifted can be gently controlled to complete the final repositioning, reducing the physical exertion of medical staff and avoiding fatigue. The pulling part, through the rotating frame, slide, slider and ball-and-socket structure, can fix the bed sheet and pull it. With the help of the lever, the bed sheet can be easily fixed and released, simplifying the operation steps of medical staff, shortening the preparation time for changing body position, and eliminating the need for medical staff to manually pull the bed sheet.

[0018] In another transmission method, the device achieves coordinated action of multiple components through a single drive motor. The output shaft of the drive motor is fixedly connected to the first rotating shaft and drives the drive gear to rotate. The drive gear meshes with the driven gear on the second rotating shaft, synchronously driving the first and second side plates to rotate to achieve the lifting function. Simultaneously, the second rotating shaft drives the drive shaft of the pulling part to rotate through a pulley and belt, causing the rotating frame to drive the closing frame of the fixed bed sheet, achieving a linkage effect of single power input synchronously driving the lifting part and the pulling part. This linkage design simplifies the device's power structure, reduces the number of parts and the risk of failure, and allows the patient to be pulled to one side by the pulling part, and then, as the lifting part lifts the bed sheet to a tilted state, the patient's own weight and the continued movement of the bed sheet create a rotation-like effect, ultimately achieving natural rotation and turning. Medical staff can then focus all their energy on maintaining the ventilation and other head and neck tubes of critically ill patients, allowing a single person to complete the turning and maintenance work that previously required multiple people.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the auxiliary body position changing device for prone ventilation of critically ill patients according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structural connection of the bed board, connecting plate, and first side plate according to an embodiment of the present invention; Figure 3This is a schematic diagram of the structure of the first side plate and the drive motor in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the bed board and the middle board according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the second side plate, lower plate, and fixing block according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the lower plate, side frame, manual end, drive end, and fixing block according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the manual end and the drive end as described in an embodiment of the present invention; Figure 8 This is a schematic diagram of the rotating frame and lever plate described in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the dial plate and the upper pad according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the second rotating shaft, drive end, pulley, and belt in an embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of the bed board and the first side plate according to an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of the first side plate and the second side plate in an embodiment of the present invention; Figure 13 This is a schematic diagram of the structure of the second side plate, side frame, and lower plate according to an embodiment of the present invention; Figure 14 This is a schematic diagram of the side frame and lower plate according to an embodiment of the present invention; Figure 15 This is a schematic diagram of the structure of the side frame, side shaft, middle frame, ball groove, and limiting ball according to an embodiment of the present invention; Figure 16 This is a schematic diagram of the connecting plate and fixing block according to an embodiment of the present invention; The attached diagram lists the components represented by each number as follows: 1-Bed board, 101-End plate, 102-Middle plate, 103-Base frame, 104-Bottom wheel, 110-Connecting plate, 2-First side plate, 201-First pivot, 202-Second side plate, 203-Second pivot, 204-Fixed frame, 2041-Side frame, 2042-Side shaft, 2043-Middle frame, 2044-Ball groove, 2045-Limiting ball, 2046-Clamping ring, 210-Drive 211-Drive gear, 212-Driven gear, 3-Lower plate, 301-Side frame, 302-Manual end, 303-Drive end, 304-Fixed block, 305-Rotating round frame, 306-Slide groove, 310-Pulley, 311-Assembly plate, 312-Card slot, 313-Ball clamp, 314-Lower pad, 315-Upper pad, 316-Slider, 320-Pulley, 321-Belt. Detailed Implementation

[0022] 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, and 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.

[0023] Example 1

[0024] like Figure 1-11 As shown The present invention provides an auxiliary position change device for prone ventilation of critically ill patients, comprising a bed body, a lifting part and a pulling part. The bed body includes a bed board (1), and a lifting part is provided on the upper side of the bed board (1). The lifting part includes a lifting component that rotates symmetrically upward. A pulling part is provided on one side of the lifting component. The pulling part includes a fixing component for fixing the bed sheet and a driving component for driving the fixing component to rotate. A middle plate (102) is fixedly connected to the upper middle of the bed board (1). A first rotating shaft (201) is rotatably connected to one side of the middle plate (102), and a second rotating shaft (203) is rotatably connected to the other side of the middle plate (102). The lifting assembly includes a first side plate (2) and a second side plate (202). The first side plate (2) is rotatably connected to the first rotating shaft (201), and the second side plate (202) is rotatably connected to the second rotating shaft (203). The lifting assembly is connected by the first side plate (2) and the second rotating shaft (203) on both sides. The two side panels (202) allow the patient to tilt, assisting medical staff in turning over. At the same time, when the opposite side is lifted, the patient's drop during the turning process will not be too large. After the medical staff places a pillow, the patient can be turned over smoothly without tiring the medical staff. Furthermore, the middle panel (102) prevents the first side panels (2) and the second side panels (202) from squeezing the patient's limbs near the middle panel (102) when they are closed, ensuring space for the limbs on the side near the middle panel (102) during turning over. A connecting plate (110) is fixedly connected to one side of the bed board (1), and a drive motor (210) is fixedly connected to the connecting plate (110). The output shaft of the drive motor (210) is fixedly connected to the first rotating shaft (201). A drive gear (211) is fixedly connected at the connection position between the output shaft of the drive motor (210) and the first rotating shaft (201). A driven gear (212) is fixedly connected to the second rotating shaft (203) at one end near the drive gear (211). The drive gear (211) and the driven gear (212) are meshed together. Example 2

[0025] like Figure 3-11 As shown A fixed frame (204) is fixedly connected to the side of the second side plate (202) away from the first side plate (2). A lower plate (3) is fixedly connected to the fixed frame (204). Side frames (301) are fixedly connected to both ends of the lower plate (3). A manual end (302) is rotatably connected to the outside of the two side frames (301) on one side of the side frame (301). A drive end (303) is provided on the outside of the two side frames (301) on the other side of the side frame (301). A rotating round frame (305) is rotatably connected to the inside of the two side frames (301) on one side of the side frame (301). The rotating frame (305) on the other side is fixedly connected to the manual end (302), and the rotating frame (305) on the other side is fixedly connected to the drive end (303); there is a two-sided plate (311) between the two rotating frames (305), and a slider (316) is fixedly connected to both ends of the plate (311). There is also a groove (306) on the rotating frame (305), and the slider (316) is slidably connected in the groove (306). The lower sides of both ends of the upper frame are fixedly connected to a ball (313), and the lower sides of both ends of the lower frame are opened with a slot (312). The ball (313) engages with the slot (312). A lever plate (310) is fixedly connected to the side of the frame away from the other frame, and the width of the lever plate (310) is greater than the width of the frame. The lower frame is fixedly connected to a lower pad (314) on the side near the upper frame, and the upper frame is fixedly connected to an upper pad (315) on the side near the lower frame. The lower pad (314) and the upper pad (315) are staggered. The drive end (303) includes a motor, and a fixing block (304) is fixedly connected to the side frame (301) near the motor, and the motor is fixedly connected to the fixing block (304); Example 3

[0026] like Figure 10 As shown The drive end (303) includes a drive shaft, and a pulley (320) is fixedly connected to the second rotating shaft (203). A belt (321) is wound between the two pulleys (320). With one input from the drive motor (210), the lifting part and the pulling part are simultaneously achieved. Under the simultaneous action of the lifting part and the pulling part, the patient is pulled to one side by the pulling part, and tilts after the lifting part is lifted, resulting in the effect of the patient turning over and forming an unexpected turning effect. The bed board (1) has end plates (101) fixedly connected to both ends along its length, and a base frame (103) fixedly connected to the lower side of the bed board (1). The base frame (103) has wheels (104) fixedly connected to the lower side of its lower side. The first side plate (2) and the second side plate (202) are provided with a four-fold structure perpendicular to the length direction.

[0027] Example 4

[0028] like Figure 11-16 As shown The fixing frame (204) consists of a side frame (2041), a side shaft (2042), and a middle frame (2043). The side frame (2041) is fixedly connected to the end plate (101) and the second side plate (202). A rotating shaft is fixedly connected to the lower side of the side frame (2041). The middle frame (2043) is rotatably connected to the rotating shaft. The middle frame (2043) is fixedly connected to the lower plate (3). Limiting balls (2045) are fixedly connected to both sides of the middle frame (2043). The side frame (2041) has a ball groove (2044) that engages with the limiting balls (2045). A retaining plate (2046) is fixedly connected to the fixing block (304), and the retaining plate (2046) engages with the connecting plate (110).

[0029] In summary, the present invention provides an auxiliary positional change device for prone ventilation of critically ill patients, which improves the safety of patient position changes. The device effectively avoids the compression of the patient's limbs near the middle plate (102) when the first side plates (2) and the second side plates (202) are closed by a middle plate (102) fixed on the upper side of the bed board (1), and provides sufficient space for the limbs near the middle plate (102) during the patient's turning process, avoiding the risk of limb compression injury; at the same time, the first side plates (2) and the second side plates (202) are set along a direction perpendicular to the length direction. Some four-fold structures can conform to the patient's body curve relative to the existing bed conditions of critically ill patients. With the lower pad (314) and upper pad (315) set in a staggered position on the pull-out part, the bed sheet is effectively fixed. By moving the bed sheet, the patient's body can be moved stably. In the overall auxiliary work, only one side of the patient is lifted and tilted. The final prone position change is controlled by medical staff to ensure the stability of the overall ventilation without excessive fluctuations. The final position change can also be controlled by medical staff to ensure the safety of the pipeline and improve the comfort and safety of the patient when changing position.

[0030] At the same time, it reduces the workload of medical staff and improves nursing efficiency. With the help of the lifting components composed of the first side plate (2) and the second side plate (202) that rotate symmetrically upward, the patient can be tilted smoothly without the need for medical staff to manually lift the patient. During the patient's turning process, due to the synergistic effect of the lifting components on both sides, the body drop is small. Medical staff only need to place a pillow, and the device can assist in completing the patient's turning action. The tilted patient that has been lifted can be slightly controlled to complete the final repositioning and transformation, reducing the physical exertion of medical staff and avoiding fatigue. Meanwhile, in another transmission mode, the pulling part can fix the bed sheet and pull it after rotating the circular frame (305), the slide (306), the slider (316), and the locking ball (313) and the locking groove (312) structure. With the help of the lever (310), the bed sheet can be easily fixed and released, simplifying the operation steps of medical staff, shortening the preparation time for changing body position, and eliminating the need for medical staff to manually pull the bed sheet.

[0031] The device achieves coordinated action of multiple components through a single drive motor (210). The output shaft of the drive motor (210) is fixedly connected to the first rotating shaft (201) and drives the drive gear (211) to rotate. The drive gear (211) meshes with the driven gear (212) on the second rotating shaft (203) to synchronously drive the first side plate (2) and the second side plate (202) to rotate to achieve the lifting function. At the same time, the second rotating shaft (203) drives the drive shaft of the pulling part to rotate through the pulley (320) and the ring belt (321), so that the rotating round frame (305) drives the frame of the fixed bed sheet to move, realizing the linkage effect of single power input synchronously driving the lifting part and the pulling part. This linkage design simplifies the device's power structure, reduces the number of parts and the risk of failure, and allows the patient to be pulled closer to one side by the pulled part while the lifted part is tilted. Through its own weight and the continued movement of the bed sheet, it creates a rotation-like effect, ultimately achieving a natural rotation and turning over. Medical staff can then focus all their energy on maintaining the ventilation and other head and neck tubes of critically ill patients. A single person can complete the turning and maintenance work that previously required multiple people.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An auxiliary body position changing device for prone ventilation in critically ill patients, characterized in that: The bed includes a bed frame, a lifting section, and a pulling section. The bed frame includes a bed board, and a lifting section is provided on the upper side of the bed board. The lifting section includes a lifting assembly that rotates symmetrically upwards. A pulling section is provided on one side of the lifting assembly. The pulling section includes a fixing assembly for fixing the bed sheet and a driving assembly for driving the fixing assembly to rotate.

2. The auxiliary body position changing device for prone ventilation of critically ill patients as described in claim 1, characterized in that: A middle plate is fixedly connected to the upper middle of the bed board. A first rotating shaft is rotatably connected to one side of the middle plate, and a second rotating shaft is rotatably connected to the other side of the middle plate. The lifting assembly includes a first side plate and a second side plate. The first side plate is rotatably connected to the first rotating shaft, and the second side plate is rotatably connected to the second rotating shaft.

3. The auxiliary body position changing device for prone ventilation of critically ill patients as described in claim 2, characterized in that: A connecting plate is fixedly connected to one side of the bed board, and a drive motor is fixedly connected to the connecting plate. The output shaft of the drive motor is fixedly connected to the first rotating shaft. A drive gear is fixedly connected at the connection position between the output shaft of the drive motor and the first rotating shaft. A driven gear is fixedly connected to the second rotating shaft at the end near the drive gear. The drive gear and the driven gear are meshed together.

4. The auxiliary body position changing device for prone ventilation of critically ill patients as described in claim 3, characterized in that: A fixing frame is fixedly connected to the side of the second side plate away from the first side plate. A lower plate is fixedly connected to the fixing frame. Side plates are fixedly connected to both ends of the lower plate. A manual end is rotatably connected to one side plate on the outside of the two side plates. A drive end is provided on the outside of the two side plates on the other side plate. A rotating round frame is rotatably connected to the inside of the two side plates. A rotating round frame on one side is fixedly connected to the manual end. A rotating round frame on the other side is fixedly connected to the drive end. Two side plates are provided between the two rotating round frames. Sliders are fixedly connected to both ends of the plates. The rotating round frames also have sliding grooves. The sliders are slidably connected in the sliding grooves. The lower sides of both ends of the upper frame are fixedly connected to locking balls. The lower sides of both ends of the lower frame have locking grooves. The locking balls engage with the locking grooves.

5. The auxiliary body position changing device for prone ventilation of critically ill patients as described in claim 4, characterized in that: A lever is fixedly connected to the side of the frame away from the other frame, and the width of the lever is greater than the width of the frame.

6. The auxiliary body position changing device for prone ventilation of critically ill patients as described in claim 5, characterized in that: The lower frame is fixedly connected to a lower pad on the side near the upper frame, and the upper frame is fixedly connected to an upper pad on the side near the lower frame. The lower pad and the upper pad are staggered.

7. The auxiliary body position changing device for prone ventilation of critically ill patients as described in claim 6, characterized in that: The drive end includes a motor, and a fixing block is fixedly connected to the side plate near the motor, and the motor is fixedly connected to the fixing block.

8. The auxiliary body position changing device for prone ventilation of critically ill patients as described in claim 7, characterized in that: The driving end includes a driving shaft, a pulley is fixedly connected to the second rotating shaft, a pulley is fixedly connected to the driving shaft, and a ring belt is wound between the two pulleys.

9. The auxiliary body position changing device for prone ventilation of critically ill patients as described in claim 8, characterized in that: End plates are fixedly connected to both ends of the bed board along its length, a base frame is fixedly connected to the underside of the bed board, and bottom wheels are fixedly connected to the underside of the base frame.

10. The auxiliary body position changing device for prone ventilation of critically ill patients as described in claim 9, characterized in that: The first and second side plates have a four-fold structure perpendicular to the length direction.

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