Adjustable body position supporting device for protecting pressure sores of severe sepsis patient

Abstract

The invention relates to the technical field of medical instruments, and discloses a sepsis critical patient pressure sore protection adjustable body position supporting device which comprises two seesaw turnover mechanisms and an air pressure type telescopic mechanism. The upper hollow shell is connected with the ends of the two lower supporting base plates in a rotatable mode, the piston plate is placed in the upper hollow shell and can drive the upwarp plate to turn over, and the first spiral spring can enable the piston plate and the upper hollow shell to retract. According to the adjustable body position supporting device for protecting the pressure sores of the severe sepsis patient, when the patient turns over, the seesaw turning-over mechanism can be inserted into the body of the patient, and when the seesaw turning-over mechanism is inserted, the negative influence on the patient is small, so that the negative influence of the device on the use of the patient is reduced; and one side of the patient is limited, so that the control capability on the posture position is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an adjustable body position support device for protecting pressure ulcers in critically ill sepsis patients. Background Technology

[0002] Pressure ulcers, also known as bedsores or pressure sores, are caused by prolonged pressure on local tissues, leading to continuous ischemia, hypoxia, malnutrition, and tissue necrosis. Skin pressure ulcers are a common problem in rehabilitation and nursing care, especially for patients with severe sepsis who are bedridden for long periods. Their skin and blood vessels are prone to stiffening or blockage, requiring frequent turning to prevent pressure ulcers. However, the turning process is not only very painful for bedridden patients with severe sepsis, but also very time-consuming and laborious for doctors.

[0003] To this end, Chinese Patent Publication No. CN214049460U discloses a "Clinical Anti-Pressure Ulcer Protective Nursing Device," whose main structure includes a floating air cushion, a control box, and a footrest. The floating air cushion and the control box are connected via a ventilation pipe. The floating air cushion is composed of a left and a right air cushion, which are alternately joined together. The left air cushion is divided into an air cushion layer and an air column layer on both sides of the midline. The air cushion layer is wavy, and the air column layer is composed of air columns extending to the right from the raised portion of the air cushion layer. The right air cushion has the same structure as the left air cushion, but the air columns extend in opposite directions. The air cushion layers of the left and right air cushions are joined together along the midline, and the air column layers are alternately arranged in the concave portions of the opposite air cushion layers to form the floating air cushion. This clinical anti-pressure ulcer protective nursing device can prevent pressure ulcers from forming on the pressure points of bedridden patients, without requiring patient movement, and is flexible and convenient to use. The air columns on the floating air cushion can be inflated and deflated alternately, allowing patients to alternate between pressure and relief while lying in bed. This increases the ventilation area of ​​the pressure-bearing surface, prevents pressure sores, improves patient comfort, and reduces the workload of medical staff.

[0004] However, in actual use, the aforementioned clinical pressure ulcer protection device uses a relatively soft floating air cushion for turning over, which can easily cause the patient to slide, leading to improper body posture adjustment. In addition, the floating air cushion needs to be placed under the patient beforehand. Due to the air cushion's sealing properties, the air flow at the contact points is poor when the patient is lying down, which can worsen pressure ulcers due to lack of ventilation. Therefore, its use poses significant safety risks. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an adjustable body position support device for pressure ulcer protection in critically ill sepsis patients. This device allows a rocker-shaped turning mechanism to be inserted under the patient's body during repositioning, minimizing negative impacts on the patient during insertion and reducing the negative impact of the device on patient use. Furthermore, the device allows for lateral restriction of the patient during repositioning, thereby improving the ability to control body position and solving the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an adjustable body position support device for pressure ulcer protection in patients with severe sepsis, comprising two rocker-type turning mechanisms, the structure of which includes a lower support base plate that can be inserted under the patient's body, an upper rocker plate that cooperates with the lower support base plate and can turn the patient over, and an arc-shaped limiting platform that cooperates with the lower support base plate and can limit one side of the patient; and a pneumatic telescopic mechanism, the structure of which includes an upper hollow shell that is rotatably connected to the ends of the two lower support base plates, a piston plate placed inside the upper hollow shell and capable of driving the upper rocker plate to turn over, and a first helical spring that can cause a retraction phenomenon between the piston plate and the upper hollow shell.

[0007] Preferably, the rocker tilting mechanism further includes an integrally formed ramp structure at one end of the lower support base plate. The horizontal upper surface of the ramp structure is fitted with an arc-shaped limiting platform via a snap-fit ​​structure. The lower support base plate and the upper rocker plate are connected by a shaft pin structure on both sides near the ramp structure. A first connecting shaft is fixedly installed at the other end of the lower support base plate, and a second connecting shaft is fixedly installed at the other end of the upper rocker plate. The end of the first connecting shaft is mounted inside a first rotating cylinder via a bearing, and the end of the second connecting shaft is mounted inside a second rotating cylinder via a bearing.

[0008] Preferably, the shaft pin structure includes a fixed shaft installed on both sides of the support base plate and a sleeve installed on both sides of the upper tilting plate, and the sleeve is installed on the shaft body of the fixed shaft by bearing.

[0009] Preferably, the snap-in structure includes a concave groove disposed in the horizontal upper surface of the ramp structure and a convex snap post integrally disposed on the bottom surface of the arc-shaped limiting platform, and the concave groove and the convex snap post are compatible.

[0010] Preferably, the pneumatic telescopic mechanism further includes a lower mounting shaft fixedly installed on the periphery of the upper hollow shell. The two ends of the lower mounting shaft are respectively fixedly connected to the ends of the two second rotating cylinders. The upper hollow shell has an upper component movable cavity inside. The top of the upper hollow shell has a first shaft hole connecting the external space and the top of the upper component movable cavity. The bottom of the upper hollow shell has a first air hole connecting the space below it and the bottom of the upper component movable cavity. A piston plate capable of moving axially along the upper component movable cavity is placed inside the upper hollow shell. An axial telescopic rod penetrating the first shaft hole is fixedly installed on the upper surface of the piston plate. A first helical spring in a compressed state is sleeved around the rod body inside the upper component movable cavity. A fixed sleeve integrally formed with the axial telescopic rod is provided at the top of the axial telescopic rod. An upper mounting shaft is fixedly installed in the sleeve hole of the fixed sleeve. The two ends of the upper mounting shaft are fixedly connected to the ends of the two first rotating cylinders.

[0011] Preferably, the cross-sectional shape of the first shaft hole is consistent with the cross-sectional shape of the axial telescopic rod, both being polygonal structures, and the structural dimensions of the cross-sectional shape of the first shaft hole match the structural dimensions of the cross-sectional shape of the axial telescopic rod.

[0012] Preferably, it also includes an elastic pressure control mechanism, the structure of which includes a lower hollow shell fixedly installed at the bottom of the upper hollow shell and having a hollow internal structure, an internal movable plate placed inside the lower hollow shell and capable of controlling air pressure, and a second helical spring that generates an upward elastic force on the internal movable plate.

[0013] Preferably, the elastic pressure control mechanism further includes a lower component movable cavity disposed inside the lower hollow shell. The top of the lower hollow shell is provided with an upper connecting plate integrally formed with it and fixedly installed at the bottom of the upper hollow shell. The center of the upper connecting plate is provided with a second air hole connecting the top of the lower component movable cavity and the bottom of the first air hole. The bottom of the lower hollow shell is provided with a limiting through hole connecting the space below it and the bottom of the lower component movable cavity. An internal movable plate capable of moving along its axial direction is placed inside the lower component movable cavity. The upper surface of the internal movable plate is provided with an annular embedding groove with a concave structure. An annular sealing ring is embedded in the annular embedding groove. The bottom of the internal movable plate is provided with a movable inflation rod integrally formed with it and passing through the limiting through hole. The center of the movable inflation rod and the internal movable plate is provided with a third air hole with an open structure at both ends. An air valve is installed inside the third air hole. A second helical spring in a compressed state is placed at the bottom of the internal movable plate. The circumferential surface of the internal movable plate is provided with a gas flow groove with a concave structure.

[0014] Preferably, the structural radius of the inner circumferential surface of the annular sealing ring is greater than the structural radius of the second air hole, and the structural radius of the outer ring of the annular sealing ring is less than the distance between the gas flow groove and the center line of the built-in movable plate.

[0015] Preferably, there is a gap between the limiting perforation and the movable inflation rod for gas flow.

[0016] Compared with the prior art, the present invention provides an adjustable body position support device for pressure ulcer protection in critically ill sepsis patients, which has the following beneficial effects: The rocker-turning mechanism can be inserted under the patient's body during turning over, and the rocker-turning mechanism has minimal negative impact on the patient when inserted, thereby reducing the negative impact of the device on the patient's use. In addition, the device can restrict the patient's position on one side during turning over, thereby improving the patient's ability to control their body position. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the present invention; Figure 3 This is a perspective view of the rocker tilting mechanism in this invention; Figure 4 This is a three-dimensional cross-sectional view of the rocker tilting mechanism in this invention; Figure 5 This is a perspective view of the pneumatic telescopic mechanism in this invention; Figure 6 This is a three-dimensional cross-sectional view of the pneumatic telescopic mechanism in this invention; Figure 7 This is a perspective view of the elastic pressure control mechanism in this invention; Figure 8 This is a three-dimensional cross-sectional view of the elastic pressure control mechanism in this invention.

[0018] The components include: 1. Rocker tilting mechanism; 11. Lower support base plate; 12. Upper rocker; 13. Shaft pin structure; 14. Slope structure; 15. Snap-in structure; 16. Arc-shaped limiting platform; 17. No. 1 connecting shaft; 18. No. 2 connecting shaft; 19. No. 1 rotating cylinder; 110. No. 2 rotating cylinder; 2. Pneumatic telescopic mechanism; 21. Upper hollow shell; 22. Lower mounting shaft; 23. Upper mounting shaft; 24. Upper component movable cavity; 25. No. 1 shaft hole; 26. No. 1 air hole. 27. Piston plate; 28. Axial telescopic rod; 29. ​​No. 1 helical spring; 210. Fixed sleeve; 3. Elastic pressure control mechanism; 31. Lower hollow shell; 32. Upper connecting plate; 33. Lower component movable cavity; 34. No. 2 air hole; 35. Limiting perforation; 36. Internal movable plate; 37. Annular embedded groove; 38. Annular sealing ring; 39. Gas flow groove; 310. Movable inflation rod; 311. No. 2 helical spring; 312. No. 3 air hole. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1 and Figure 2 An adjustable body position support device for pressure ulcer protection in patients with severe sepsis, wherein the structural strength of the lower support base plate 11 and the upper tilting plate 12 must meet the structural stiffness that the patient needs to overcome when turning over, and an inflation device is used, with the air outlet of the inflation device connected to the bottom of the movable inflation rod 310.

[0021] To achieve the insert-style turning effect, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4Two rocker-turning mechanisms 1 need to be set up. The structure includes a lower support base plate 11 that can be inserted under the patient, an upper rocker plate 12 that cooperates with the lower support base plate 11 and can turn the patient over, and an arc-shaped limiting platform 16 that cooperates with the lower support base plate 11 and can limit the patient on one side. First, the arc-shaped limiting platform 16 is removed. Then, the two lower support base plates 11 and the upper rocker plate 12 are inserted between the bed and the patient's back until the ramp structure 14 is exposed on the other side of the patient. Then, the arc-shaped limiting platform 16 is installed on the upper surface of the ramp structure 14, which completes the preparation work before operation. When the upper mounting shaft 23 moves upward, it will drive the two upper rocker plates 12 to rotate. Since the ramp structure 14 is against the patient on one side, it can prevent the patient from shifting. The rotating upper rocker plate 12 can cause the patient to turn over to one side, thereby achieving the support effect of body position adjustment.

[0022] For details regarding the specific structure of the rocker tilting mechanism 1, please refer to [link / reference]. Figure 3 and Figure 4 It also includes an integrally formed ramp structure 14 at one end of the lower support base plate 11. The horizontal upper surface of the ramp structure 14 is fitted with an arc-shaped limiting platform 16 via a snap-fit ​​structure 15. The lower support base plate 11 and the upper rocker plate 12 are connected on both sides near the ramp structure 14 via a shaft pin structure 13. A first connecting shaft 17 is fixedly installed at the other end of the lower support base plate 11, and a second connecting shaft 18 is fixedly installed at the other end of the upper rocker plate 12. The end of the first connecting shaft 17 is mounted to the inner part of a first rotating cylinder 19 via a bearing. The end of the second connecting shaft 18 is mounted inside a second rotating cylinder 110 via a bearing. The shaft pin structure 13 includes a fixed shaft mounted on both sides of the support base plate 11 and a sleeve mounted on both sides of the upper tilting plate 12. The sleeve is mounted on the shaft body of the fixed shaft via a bearing. The snap-fit ​​structure 15 includes a concave groove set in the horizontal upper surface of the ramp structure 14 and a convex locking post integrally set on the bottom surface of the arc-shaped limiting platform 16. The concave groove and the convex locking post are compatible.

[0023] To achieve pneumatic drive functionality, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 5 and Figure 6A pneumatic telescopic mechanism 2 needs to be set up. Its structure includes an upper hollow shell 21 that is rotatably connected to the ends of the two lower support base plates 11, a piston plate 27 placed inside the upper hollow shell 21 and capable of driving the upper tilting plate 12 to flip, and a first helical spring 29 that can cause the piston plate 27 and the upper hollow shell 21 to retract. After the gas enters the upper component movable cavity 24, it will generate an upward force on the piston plate 27. The piston plate 27 will drive the upper mounting shaft 23 to move upward through the axial telescopic rod 28, and the first helical spring 29 will be compressed, thereby realizing the pneumatic drive function.

[0024] For details regarding the specific structure of the pneumatic telescopic mechanism 2, please refer to [link / reference]. Figure 5 and Figure 6 It also includes a lower mounting shaft 22 fixedly installed on the periphery of the upper hollow shell 21. Both ends of the lower mounting shaft 22 are fixedly connected to the ends of the two second rotating cylinders 110, respectively. The upper hollow shell 21 has an upper component movable cavity 24 inside. The top of the upper hollow shell 21 has a first shaft hole 25 connecting the external space and the top of the upper component movable cavity 24. The bottom of the upper hollow shell 21 has a first air hole 26 connecting the space below it and the bottom of the upper component movable cavity 24. A piston plate 27 capable of moving axially along the upper component movable cavity 24 is placed inside the upper hollow shell 21 within the upper component movable cavity 24. A through-hole is fixedly installed on the upper surface of the piston plate 27. An axial telescopic rod 28 is passed through the first shaft hole 25. A first helical spring 29 in a compressed state is placed around the rod body inside the upper component movable cavity 24. The top end of the axial telescopic rod 28 is provided with a fixed sleeve 210 integrally formed with it. An upper mounting shaft 23 is fixedly installed in the sleeve hole of the fixed sleeve 210. The two ends of the upper mounting shaft 23 are fixedly connected to the ends of the two first rotating cylinders 19. The cross-sectional shape of the first shaft hole 25 is consistent with the cross-sectional shape of the axial telescopic rod 28, both being polygonal structures, and the cross-sectional dimensions of the first shaft hole 25 match the cross-sectional dimensions of the axial telescopic rod 28.

[0025] To achieve pressure control, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 7 and Figure 8An elastic pressure control mechanism 3 needs to be set up. Its structure includes a lower hollow shell 31 fixedly installed at the bottom of the upper hollow shell 21 and having a hollow internal structure, an internal movable plate 36 placed inside the lower hollow shell 31 and capable of controlling the air pressure, and a second helical spring 311 that generates an upward elastic force on the internal movable plate 36. The gas pressure will also generate a downward force on the internal movable plate 36. When this force is greater than the elastic strength of the second helical spring 311, the second helical spring 311 will be compressed, and the internal movable plate 36 will move downward. At this time, the gas that is filled in will be discharged outward in sequence along the movement gap of the internal movable plate 36, the gas flow groove 39, the lower component movable cavity 33, and the limiting perforation 35, so as to achieve timely pressure relief and prevent the equipment components from being damaged due to overload of the filling pressure.

[0026] For details regarding the specific structure of the elastic pressure control mechanism 3, please refer to [link / reference]. Figure 7 and Figure 8 It also includes a lower component movable cavity 33 disposed inside the lower hollow shell 31. The top of the lower hollow shell 31 is provided with an upper connecting plate 32 integrally formed with it and fixedly installed at the bottom of the upper hollow shell 21. The center of the upper connecting plate 32 is provided with a second air hole 34 connecting the top of the lower component movable cavity 33 and the bottom of the first air hole 26. The bottom of the lower hollow shell 31 is provided with a limiting through hole 35 connecting the space below it and the bottom of the lower component movable cavity 33. The interior of the lower component movable cavity 33 is provided with an internal movable plate 36 that can move along its axial direction. The upper surface of the internal movable plate 36 is provided with an annular embedding groove 37 with a concave structure. An annular sealing ring 38 is embedded in the annular embedding groove 37. The bottom of the internal movable plate 36 is provided with... The device includes an integral structure with a through-hole 35 for inflatable rod 310. A third air hole 312 with open ends is located at the center of the movable rod 310 and the built-in movable plate 36. An air valve is installed inside the third air hole 312. A second helical spring 311 in a compressed state is placed at the bottom of the built-in movable plate 36. A concave gas flow groove 39 is provided on the circumferential surface of the built-in movable plate 36. The structural radius of the inner circumferential surface of the annular sealing ring 38 is larger than the structural radius of the second air hole 34. The structural radius of the outer ring of the annular sealing ring 38 is smaller than the distance between the gas flow groove 39 and the axis of the built-in movable plate 36. A gap for gas flow exists between the through-hole 35 and the movable rod 310.

[0027] In use, take an inflation device, connect the air outlet of the inflation device to the bottom of the movable inflation rod 310, remove the arc-shaped limiting platform 16, and then insert the two lower support base plates 11 and the upper rocker plate 12 between the bed and the patient's back until the ramp structure 14 is exposed from the other side of the patient. Then install the arc-shaped limiting platform 16 on the upper surface of the ramp structure 14 to complete the preparation work before work. Start the inflation device. After the gas enters the upper component movable cavity 24, it will generate an upward force on the piston plate 27. The piston plate 27 will drive the upper mounting shaft 23 to move upward through the axial telescopic rod 28, and the first helical spring 29 will be compressed. When the upper mounting shaft 23 moves upward, it will simultaneously drive the two upper rocker plates 12 to rotate. Since the ramp structure 14 is against one side of the patient, it can prevent the patient from shifting. The rotating upper rocker plate 12 can cause the patient to turn to one side, thereby achieving the support effect of body position adjustment.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable body position support device for protecting pressure ulcers in severely sepsis patients, characterized in that: include, Two rocker-turning mechanisms (1) are provided, the structure of which includes a lower support base plate (11) that can be inserted from under the patient, an upper rocker plate (12) that cooperates with the lower support base plate (11) and can turn the patient over, and an arc-shaped limiting platform (16) that cooperates with the lower support base plate (11) and can limit one side of the patient. And a pneumatic telescopic mechanism (2), the structure of which includes an upper hollow shell (21) rotatably connected to the ends of two lower support base plates (11), a piston plate (27) placed inside the upper hollow shell (21) and capable of driving the upper rocker plate (12) to flip, and a first helical spring (29) capable of causing a retraction between the piston plate (27) and the upper hollow shell (21).

2. The adjustable body position support device for pressure ulcer protection in critically ill sepsis patients according to claim 1, characterized in that: The rocker tilting mechanism (1) also includes an integral ramp structure (14) set at one end of the lower support base plate (11). The horizontal upper surface of the ramp structure (14) is equipped with an arc-shaped limiting platform (16) through a snap-fit ​​structure (15). The lower support base plate (11) and the upper rocker plate (12) are connected by a shaft pin structure (13) on both sides near the ramp structure (14). A first connecting shaft (17) is fixedly installed at the other end of the lower support base plate (11), and a second connecting shaft (18) is fixedly installed at the other end of the upper rocker plate (12). The end of the first connecting shaft (17) is installed inside a first rotating cylinder (19) through a bearing, and the end of the second connecting shaft (18) is installed inside a second rotating cylinder (110) through a bearing.

3. The adjustable body position support device for pressure ulcer protection in critically ill sepsis patients according to claim 2, characterized in that: The pin structure (13) includes a fixed shaft installed on both sides of the support base plate (11) and a sleeve installed on both sides of the upper tilting plate (12), and the sleeve is installed on the shaft body of the fixed shaft by bearing.

4. The adjustable body position support device for pressure ulcer protection in critically ill sepsis patients according to claim 3, characterized in that: The snap-in structure (15) includes a concave groove inside the horizontal upper surface of the ramp structure (14) and a convex snap post integrally set on the bottom surface of the arc-shaped limiting platform (16), and the concave groove and the convex snap post are compatible.

5. An adjustable body position support device for pressure ulcer protection in critically ill sepsis patients according to claim 4, characterized in that: The pneumatic telescopic mechanism (2) further includes a lower mounting shaft (22) fixedly installed on the periphery of the upper hollow shell (21). The two ends of the lower mounting shaft (22) are respectively fixedly connected to the ends of the two second rotating cylinders (110). The upper hollow shell (21) is provided with an upper component movable cavity (24). The top of the upper hollow shell (21) is provided with a first shaft hole (25) connecting the external space and the top of the upper component movable cavity (24). The bottom of the upper hollow shell (21) is provided with a first air hole (26) connecting the space below it and the bottom of the upper component movable cavity (24). The upper hollow shell (21) is located in the upper component movable cavity (24). 4) A piston plate (27) capable of moving axially along the upper component movable cavity (24) is placed inside. An axial telescopic rod (28) passing through the first shaft hole (25) is fixedly installed on the upper surface of the piston plate (27). A first helical spring (29) in a compressed state is placed around the rod body inside the upper component movable cavity (24). A fixed sleeve (210) with an integral structure is provided at the top of the axial telescopic rod (28). An upper mounting shaft (23) is fixedly installed in the sleeve hole of the fixed sleeve (210). The two ends of the upper mounting shaft (23) are fixedly connected to the ends of the two first rotating cylinders (19).

6. An adjustable body position support device for pressure ulcer protection in critically ill sepsis patients according to claim 5, characterized in that: The cross-sectional shape of the first shaft hole (25) is consistent with the cross-sectional shape of the axial telescopic rod (28), both being polygonal structures, and the structural dimensions of the cross-sectional shape of the first shaft hole (25) match the structural dimensions of the cross-sectional shape of the axial telescopic rod (28).

7. An adjustable body position support device for pressure ulcer protection in critically ill sepsis patients according to claim 6, characterized in that: It also includes an elastic pressure control mechanism (3), the structure of which includes a lower hollow shell (31) fixedly installed at the bottom of the upper hollow shell (21) and having a hollow structure inside, an internal movable plate (36) placed inside the lower hollow shell (31) and capable of controlling air pressure, and a second helical spring (311) that generates an upward elastic force on the internal movable plate (36).

8. An adjustable body position support device for pressure ulcer protection in critically ill sepsis patients according to claim 7, characterized in that: The elastic pressure control mechanism (3) further includes a lower component movable cavity (33) disposed inside the lower hollow shell (31). The top of the lower hollow shell (31) is provided with an upper connecting plate (32) integrally formed with it and fixedly installed at the bottom of the upper hollow shell (21). The center of the upper connecting plate (32) is provided with a second air hole (34) connecting the top of the lower component movable cavity (33) and the bottom of the first air hole (26). The bottom of the lower hollow shell (31) is provided with a limiting through hole (35) connecting the space below it and the bottom of the lower component movable cavity (33). The interior of the lower component movable cavity (33) is provided with an internal movable plate (36) capable of moving along its axial direction. The upper surface of the inner movable plate (36) is provided with an annular embedded groove (37) with a concave structure. An annular sealing ring (38) is embedded in the annular embedded groove (37). The bottom end of the inner movable plate (36) is provided with an integral structure and a through-hole (35) for limiting. The center of the inner movable plate (36) and the inner movable plate (36) is provided with a No. 3 air hole (312) with open structure at both ends. An air valve is installed inside the No. 3 air hole (312). A No. 2 helical spring (311) in a compressed state is placed at the bottom of the inner movable plate (36). The circumferential surface of the inner movable plate (36) is provided with a gas flow groove (39) with a concave structure.

9. An adjustable body position support device for pressure ulcer protection in critically ill sepsis patients according to claim 8, characterized in that: The structural radius of the inner circumference of the annular sealing ring (38) is greater than the structural radius of the second air hole (34), and the structural radius of the outer ring of the annular sealing ring (38) is less than the distance between the centerline of the gas flow groove (39) and the built-in movable plate (36).

10. An adjustable body position support device for pressure ulcer protection in critically ill sepsis patients according to claim 9, characterized in that: There is a gap for gas flow between the limiting perforation (35) and the movable inflation rod (310).

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