Body position fixing structure for bedridden patient in rehabilitation department

Abstract

The invention discloses a rehabilitation department bedridden patient body position fixing structure, and relates to the technical field of patient nursing, the rehabilitation department bedridden patient body position fixing structure comprises a sickbed and a limiting plate, the limiting plate is mounted on one side surface of the inner wall of the sickbed, a transverse rod is mounted on the inner wall of the sickbed, and a movable sleeve is slidably mounted on the outer side surface of the transverse rod; an adjusting shell is fixedly mounted on the outer side surface of the movable sleeve; the adjusting rod integrated with the clamping ring is inserted into the worm in a penetrating mode, the axial push-pull action of the adjusting rod is used for driving the clamping ring to be selectively embedded into the matching teeth of the matching pipe on the left side or the right side, independent clutch switching of a single power source to the transmission units on the two sides is achieved, and through combination of meshing transmission of the worm and the gear, the transmission efficiency is improved. Finally, rotary jacking and mechanical self-locking of the supporting rod are achieved, and therefore the defects that in the prior art, supporting objects of a triangular pillow are fixed through friction force, materials are soft, when the body of a patient is relaxed or extruded by gravity, the supporting objects are prone to slipping, shifting or deforming, and a specific side lying angle cannot be stably kept are overcome.

Description

Technical Field

[0001] This invention relates to the field of patient care technology, and in particular to a structure for fixing the body position of bedridden patients in the rehabilitation department. Background Technology

[0002] In the clinical nursing of rehabilitation, neurology and orthopedics departments, there are a large number of patients who are bedridden for a long time due to stroke, spinal cord injury, fracture or old age and frailty. For these patients, regular changes in body position, such as turning over and lying on their side, are the most basic and important nursing measures to prevent pressure injury, promote blood circulation and prevent lung infection. It is generally recommended to change the patient's body position every 2 hours with the help of assisted means.

[0003] In the field of rehabilitation nursing, long-term bedridden patients need to have their positions changed regularly to prevent pressure sores and lung infections. Currently, clinical practice mainly relies on nurses manually turning the patient over and inserting soft pads or triangular pillows for support. However, because these supports rely on friction for fixation and are made of relatively soft materials, they are prone to slipping, shifting, or deforming when the patient relaxes or is compressed by gravity. This causes the patient to return to a supine position and is unable to maintain a specific lateral lying angle stably for a long time, thus defeating the purpose of position fixation. To address the aforementioned technical shortcomings, a solution is proposed. Summary of the Invention

[0004] The purpose of this invention is to achieve flexible sliding and precise longitudinal positioning of the entire adjustment device along the length of the bed by setting a sliding plate fixed to the side of the bed and a sliding plate with a locking mechanism. By inserting an adjustment rod with a retaining ring inside the hollow worm gear, the axial push-pull action of the adjustment rod drives the retaining ring to selectively engage with the mating teeth of the left or right mating tube, realizing independent clutch switching of the dual-sided transmission unit by a single power source. Combined with the meshing transmission of the worm gear and gear, the rotation and lifting of the support rod and mechanical self-locking are finally realized. This overcomes the shortcomings of the existing technology, which relies on nurses to manually turn the patient over and stuff soft pads or triangular pillows for support. However, because the existing support relies on friction for fixation and is made of soft material, the support is prone to slippage, displacement or deformation when the patient relaxes or is squeezed by gravity, causing the patient to return to a supine position and unable to maintain a specific lateral angle for a long time, thus losing the purpose of body position fixation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a body position fixation structure for bedridden patients in rehabilitation departments, comprising a bed and a limiting plate, wherein the limiting plate is installed on one side of the inner wall of the bed, a transverse rod is installed on the inner wall of the bed, a movable sleeve is slidably installed on the outer surface of the transverse rod, an adjusting shell is fixedly installed on the outer surface of the movable sleeve, a rotating groove is provided on the inner wall of the adjusting shell, deflection grooves are provided on one side and the other side of the adjusting shell, an adjusting groove is provided on the inner wall of the adjusting shell, a transmission mechanism is installed on the inner wall of the adjusting shell, and a limiting component is installed on one side of the bed; The transmission mechanism includes an adjustment component and a fixing component. The adjustment component includes a rotary bearing, which is fixedly installed on the inner wall of the adjustment groove. A mating tube is fixedly installed on the inner wall of the rotary bearing. A mating tooth is provided on one side surface of the mating tube, and a worm is fixedly installed on the other side surface of the mating tube. An adjustment rod is slidably installed on the inner wall of the worm. An adjustment handle is installed at one end of the adjustment rod, and a retaining ring is fixedly installed on the outer surface of the adjustment rod.

[0006] Furthermore, there are two limiting plates, which are equidistantly distributed on one side of the inner wall of the hospital bed. There are two rotating grooves, which are equidistantly distributed on the inner wall of the adjusting shell. There are four deflection grooves, which are distributed in pairs on one side and the other side of the adjusting shell. The adjusting groove and the two rotating grooves are interconnected.

[0007] Furthermore, there are two rotary bearings, which are equidistantly distributed on the inner wall of the adjusting groove. Each rotary bearing has a corresponding mating tube, and each mating tube has a mating tooth on one side surface. A worm gear is also installed on one side surface of each mating tube. The mating tubes are rotatably connected to the inner wall of the adjusting groove through the rotary bearings, and the retaining ring is movably inserted into the inner wall of the mating tooth.

[0008] Furthermore, the fixing component includes a positioning bearing, which is fixedly installed on the inner wall of the deflection groove. A connecting shaft is fixedly installed on the positioning bearing. A gear is fixedly installed on the outer surface of the connecting shaft. An adjusting plate is fixedly installed on the outer surface of the connecting shaft. A support rod is provided on the outer surface of the adjusting plate.

[0009] Furthermore, there are four positioning bearings, which are distributed on the inner walls of four deflection slots. A connecting shaft is distributed on the inner walls of every two positioning bearings. A gear is distributed on the outer surface of each connecting shaft. The gear meshes with the worm gear. There are four adjusting discs, which are distributed on the outer surfaces of two connecting shafts in pairs. There are two support rods, each of which is fixedly connected to two adjusting discs.

[0010] Furthermore, the limiting component includes a bed board, which is installed on the top surface of the hospital bed. A sliding groove plate is fixedly installed on one side surface of the hospital bed. A sliding plate is slidably installed on the outer side surface of the sliding groove plate. A rotating limiting plate is rotatably installed on one side surface of the sliding plate. A calibration positioning block is provided on the bottom surface of the sliding groove plate.

[0011] Furthermore, there are two sliding plates, which are respectively distributed on one side and the other side of the bed surface. Sliding plates are correspondingly distributed on the outer surface of both sliding plates. The sliding plates are rotatably connected to the inner wall of the adjusting rod. The rotating limiting plate is distributed on one side surface of one of the sliding plates. The calibration positioning block is a number of blocks that are linearly arrayed and equidistantly distributed on the bottom surface of the sliding plate. The positioning block is in active contact with one side surface of the rotating limiting plate.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: This rehabilitation department's bedridden patient positioning fixation structure, through the setting of a sliding plate fixed to the side of the bed and a sliding plate with a locking mechanism, achieves flexible sliding along the length of the entire adjustment device and precise longitudinal position calibration. By inserting an adjustment rod with a retaining ring inside a hollow worm gear, the axial push-pull action of the adjustment rod drives the retaining ring to selectively engage with the mating teeth of the left or right mating tube, realizing independent clutch switching of the dual-sided transmission unit by a single power source. Combined with the meshing transmission of the worm gear and gear, it ultimately realizes the rotation and lifting of the support rod and mechanical self-locking. This overcomes the shortcomings of existing technologies that rely on nurses to manually turn the patient over and stuff soft pads or triangular pillows for support. However, because these supports in existing technologies rely on friction for fixation and are made of relatively soft materials, when the patient relaxes or is squeezed by gravity, the supports are prone to slippage, displacement, or deformation, causing the patient to return to a supine position and unable to maintain a specific lateral lying angle for a long time, thus losing the purpose of positioning fixation. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall external structure of the present invention is shown; Figure 2 A schematic diagram of the overall bottom structure of the present invention is shown; Figure 3 A schematic diagram of the overall internal structure of the present invention is shown; Figure 4 A schematic diagram of the external structure of the transmission mechanism of the present invention is shown; Figure 5 This diagram shows the external structure of the transmission mechanism of the present invention from another angle; Figure 6 A schematic diagram of the internal structure of the transmission mechanism of the present invention is shown; Figure 7 A schematic diagram of the internal structure of the adjusting housing of the present invention is shown; Figure 8 A schematic diagram of the limiting component structure of the present invention is shown.

[0014] Legend: 1. Hospital bed; 101. Limiting plate; 102. Transverse bar; 103. Moving sleeve; 104. Adjusting shell; 105. Rotating groove; 106. Deflection groove; 107. Adjusting groove; 2. Rotary bearing; 201. Matching tube; 202. Matching gear; 203. Worm gear; 204. Adjusting rod; 205. Adjusting handle; 206. Snap ring; 3. Positioning bearing; 301. Connecting shaft; 302. Gear; 303. Adjusting disc; 304. Support rod; 4. Bed board; 401. Slide plate; 402. Sliding plate; 403. Rotating limit plate; 404. Calibration positioning block. Detailed Implementation

[0015] 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.

[0016] It should be noted that, in the description of this invention, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0017] like Figures 1-8 As shown, a postural fixation structure for bedridden patients in a rehabilitation department includes a bed 1 and two limiting plates 101 equidistantly installed on one side of the inner wall of the bed 1. A transverse bar 102 is installed on the inner wall of the bed 1. A movable sleeve 103 is slidably installed on the outer surface of the transverse bar 102. An adjusting shell 104 is fixedly installed on the outer surface of the movable sleeve 103. A limiting component is also installed on one side of the bed.

[0018] The inner wall of the adjusting housing 104 is provided with an adjusting groove 107 and two rotating grooves 105 that are equidistantly distributed and communicate with each other inside the adjusting groove 107. A total of four deflection grooves 106 are provided on one side and the other side surface of the adjusting housing 104, with each pair forming a group.

[0019] A transmission mechanism is installed on the inner wall of the adjusting housing 104. The mechanism includes an adjusting component and a fixing component. The adjusting component includes two rotary bearings 2 that are fixedly installed at equal intervals on the inner wall of the adjusting groove 107. The inner walls of the two rotary bearings 2 are respectively fixedly installed with mating tubes 201. The mating tubes 201 are rotatably connected to the inner wall of the adjusting groove 107 through the rotary bearings 2. Each mating tube 201 has mating teeth 202 on one side surface and a worm gear 203 fixedly installed on the other side surface. The adjusting rod 204 is slidably installed in the inner wall of the two worm gears 203. An adjusting handle 205 is installed at one end of the rod, and a retaining ring 206 is fixedly installed on the outer surface. The retaining ring 206 is movably inserted into the inner wall of the mating teeth 202.

[0020] After the position is locked, the caregiver holds the adjustment handle 205 installed at one end of the adjustment rod 204 to adjust the body position. The device employs a mechanical transmission structure based on axial movement for power selection. Inside the adjustment housing 104, two mating tubes 201 are rotatably mounted on both sides of the inner wall of the adjustment groove 107 via rotary bearings 2. Each mating tube 201 has mating teeth 202 on one side, while a worm gear 203 is fixedly installed on the other side. The adjustment rod 204 is inserted into the two mating tubes 201 and the worm gear 203, and a retaining ring 206 is fixedly installed on the outer surface of the adjustment rod 204. When the caregiver needs to lift the mattress on one side of the bed 1, for example, the left side, the caregiver... By holding the adjustment handle 205 and pushing the adjustment rod 204 axially inward, the adjustment rod 204 drives the retaining ring 206 fixed on its outer surface to move synchronously on the inner wall of the adjustment groove 107 during the sliding process. When the adjustment rod 204 moves to a specific position, the retaining ring 206 will gradually approach and eventually contact the mating teeth 202 on one side surface of the left mating tube 201. With the continuous action of the pushing force, the retaining ring 206 is fully inserted and embedded in the interior of the left mating teeth 202, so that the adjustment rod 204 and the left mating tube 201 form a circumferential fixed connection through the meshing of the retaining ring 206 and the mating teeth 202. At this time, the adjustment rod 204, the left mating tube 201 and the left worm gear 203 become a linked whole, while remaining separated from the right mating tube 201.

[0021] Reference Figures 1-8Specifically, the body positioning fixation assembly includes four positioning bearings 3 respectively fixedly installed on the inner wall of the deflection groove 106. A connecting shaft 301 is rotatably installed on the inner wall of every two positioning bearings 3. A gear 302 that meshes with the worm gear 203 is fixedly installed on the outer surface of each connecting shaft 301. A set of adjusting discs 303 is also fixedly installed on the outer surface of each connecting shaft 301, so that there are a total of four adjusting discs 303. There are two support rods 304. Each support rod 304 is fixedly connected to two adjusting discs 303 on the same connecting shaft 301.

[0022] In this embodiment of the invention, after the engagement switching is completed, the caregiver rotates the adjusting handle 205. The input rotational torque is directly transmitted to the retaining ring 206 through the adjusting rod 204. The retaining ring 206 drives the meshing teeth 202 to rotate, thereby driving the left-side meshing tube 201 and the worm 203 fixed on its outer surface to rotate synchronously on the inner wall of the rotating bearing 2. Since the outer surface of the worm 203 and the gear 302 installed in the deflection groove 106 on the inner wall of the adjusting housing 104 always maintain a meshing state, when the worm 203 rotates, the helical tooth surface of the worm 203 pushes the gear teeth of the gear 302, thereby driving the gear 302 to rotate around its axis. The rotation of the adjustment rod 204 causes the connecting shaft 301, which is fixedly connected to it, to rotate synchronously. The connecting shaft 301 then causes the adjustment disc 303, which is fixed on its outer surface, to deflect. The support rod 304, which is installed on the outer surface of the adjustment disc 303, rotates upward from the storage position under the bed board 4 under the power. The end of the support rod 304 gradually contacts the bottom surface of the mattress above. As the adjustment rod 204 continues to rotate, the support rod 304 outputs lifting force to overcome the resistance of the mattress and the weight of the patient's body, forcing the mattress to rise locally and form a slope with a support angle. This slope is close to the side of the patient's body, thereby forcing the patient's body to remain at a predetermined side-lying angle.

[0023] Reference Figures 1-8 Specifically, the limiting component includes a bed board 4 installed on the top surface of the bed 1, and two sliding plates 401 respectively fixedly installed on the two side surfaces of the bed 1. A sliding plate 402 is slidably installed on the outer surface of each sliding plate 401, and the sliding plate 402 is rotatably connected to the inner wall of the adjusting rod 204. A rotating limiting plate 403 is rotatably installed on one side surface of one of the sliding plates 402. A plurality of calibration positioning blocks 404 are arranged in a linear array and are equidistantly distributed on the bottom surface of the sliding plate 401. The calibration positioning blocks 404 are in active contact with one side surface of the rotating limiting plate 403.

[0024] In this embodiment of the invention, when using the rehabilitation department's bedridden patient positioning fixation structure to care for a patient, the assembly and laying of the basic support components must first be completed. The bed board 4 is installed and fixed on the top surface of the bed 1 to ensure the flatness and stability of the nursing surface. Then, the mattress is laid flat on the top surface of the bed board 4 to cover the bed board 4 and support the patient. When it is necessary to adjust the support position for the patient, the rotating limiting plate 403 installed on one side surface of the sliding plate 402 is rotated so that the rotated limiting plate 403 no longer contacts the calibration positioning block 404 set on the bottom surface of the sliding plate 401, thereby realizing the function of canceling the limit. When the limit is canceled... Then, the sliding plate 402 is pushed to move along the outer surface of the slide plate 401. The movement of the sliding plate 402 drives the adjusting housing 104 and the adjusting rod 204 installed inside to move synchronously along the length direction of the transverse rod 102. When the sliding plate 402 drives the adjusting housing 104 to move directly below the part of the patient that needs to be fixed, the limiting plate 403 is rotated in the opposite direction to reset it and make contact and abut against the calibration positioning block 404 on the surface of the slide plate 401 again. The mechanical block eliminates the degree of freedom of movement of the sliding plate 402, so that the position of the adjusting housing 104 in the length direction of the bed 1 is fixed, preventing positional displacement during subsequent force application.

[0025] Specific usage procedure: When using this rehabilitation department bedridden patient positioning fixation structure for patient care, the first step is to assemble and lay the basic support components. Install and fix the bed board 4 on the top surface of the bed 1, ensuring the nursing surface is flat and stable. Then, lay the mattress flat on the top surface of the bed board 4 to cover it and support the patient. When adjusting the patient's support position, rotate the rotating limiting plate 403 installed on one side of the sliding plate 402. This rotates the limiting plate 403 so that it no longer contacts the calibration positioning block 404 on the bottom surface of the sliding plate 401, thus canceling the limiting function. Then, the sliding plate 402 is pushed to move along the outer surface of the slide plate 401. The movement of the sliding plate 402 drives the adjusting housing 104 and the adjusting rod 204 installed inside to move synchronously along the length direction of the transverse rod 102. When the sliding plate 402 drives the adjusting housing 104 to move directly below the part of the patient that needs to be fixed, the limiting plate 403 is rotated in the opposite direction to reset it and make contact and abut against the calibration positioning block 404 on the surface of the slide plate 401 again. The mechanical block eliminates the degree of freedom of movement of the sliding plate 402, so that the position of the adjusting housing 104 in the length direction of the bed 1 is fixed, preventing positional displacement during subsequent force application.

[0026] After the position is locked, the caregiver holds the adjustment handle 205 installed at one end of the adjustment rod 204 to adjust the body position. The device employs a mechanical transmission structure based on axial movement for power selection. Inside the adjustment housing 104, two mating tubes 201 are rotatably mounted on both sides of the inner wall of the adjustment groove 107 via rotary bearings 2. Each mating tube 201 has mating teeth 202 on one side, while a worm gear 203 is fixedly installed on the other side. The adjustment rod 204 is inserted into the two mating tubes 201 and the worm gear 203, and a retaining ring 206 is fixedly installed on the outer surface of the adjustment rod 204. When the caregiver needs to lift the mattress on one side of the bed 1, for example, the left side, the caregiver... By holding the adjustment handle 205 and pushing the adjustment rod 204 axially inward, the adjustment rod 204 drives the retaining ring 206 fixed on its outer surface to move synchronously on the inner wall of the adjustment groove 107 during the sliding process. When the adjustment rod 204 moves to a specific position, the retaining ring 206 will gradually approach and eventually contact the mating teeth 202 on one side surface of the left mating tube 201. With the continuous action of the pushing force, the retaining ring 206 is fully inserted and embedded in the interior of the left mating teeth 202, so that the adjustment rod 204 and the left mating tube 201 form a circumferential fixed connection through the meshing of the retaining ring 206 and the mating teeth 202. At this time, the adjustment rod 204, the left mating tube 201 and the left worm gear 203 become a linked whole, while remaining separated from the right mating tube 201.

[0027] After the engagement is completed, the nurse rotates the adjusting handle 205. The input rotational torque is directly transmitted to the retaining ring 206 through the adjusting rod 204. The retaining ring 206 drives the meshing teeth 202 to rotate, which in turn drives the left-side mating tube 201 and the worm 203 fixed on its outer surface to rotate synchronously on the inner wall of the rotating bearing 2. Since the outer surface of the worm 203 and the gear 302 installed in the deflection groove 106 on the inner wall of the adjusting housing 104 are always meshed, when the worm 203 rotates, the helical tooth surface of the worm 203 pushes the teeth of the gear 302, thereby driving the gear 302 to rotate around its axis. The rotation of the gear 302 brings The connecting shaft 301, which is fixedly connected to the adjustable disc 303, rotates synchronously. The connecting shaft 301 then drives the adjustable disc 303, which is fixed on its outer surface, to deflect. The support rod 304, which is installed on the outer surface of the adjustable disc 303, rotates upward from the storage position under the bed board 4 under the power. The end of the support rod 304 gradually contacts the bottom surface of the mattress above. As the adjustable rod 204 continues to rotate, the support rod 304 outputs lifting force to overcome the resistance of the mattress and the weight of the patient's body, forcing the mattress to rise locally and form a slope with a support angle. This slope is close to the side of the patient's body, thereby forcing the patient's body to remain at a predetermined side-lying angle.

[0028] During this process, the self-locking characteristic of the mechanical structure plays a role in maintaining the patient's position. When the support rod 304 lifts the patient, the patient's body weight will exert a reverse downward pressure on the support rod 304 through the mattress. This force is converted into torque and transmitted back to the gear 302 through the adjustment plate 303 and the connecting shaft 301, attempting to drive the gear 302 to rotate in the opposite direction, thereby driving the worm 203 to rotate in the opposite direction. However, due to the reverse self-locking physical characteristic of the meshing transmission between the worm 203 and the gear 302, the gear 302 cannot drive the worm 203 to rotate in the opposite direction. This characteristic ensures that the support rod 304 remains stationary at any lifting angle. Even if the caregiver releases the adjustment handle 205, the device will not fall back, ensuring the stability of the patient's position.

[0029] If it is necessary to fix the body position on the other side, or to establish a body position with fixation on both sides, the nurse only needs to pull the adjusting rod 204 outward in the opposite direction. The adjusting rod 204 causes the retaining ring 206 to disengage from the left mating tooth 202, slide across the empty area in the middle, and until it is inserted into the mating tooth 202 on the surface of the right mating tube 201, completing the switch of the power transmission path. Then, the adjusting rod 204 is rotated again, and the power will be transmitted to the right support rod 304 through the right mating tube 201, worm gear 203, and gear 302 in the same mechanical principle, so that it rises to work. This design uses the combination of the axial sliding and radial rotation of the adjusting rod 204 to achieve independent control of the two-sided mechanism. Finally, when the nursing task is over, the support rod 304 is lowered back to its original position by rotating the adjusting rod 204 in the opposite direction, and the limiting plate 403 is rotated again to cancel the limit, thereby releasing the lock on the sliding plate 402. The device can then be pushed to the side of the bed 1 and left idle.

[0030] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A posture fixation structure for bedridden patients in a rehabilitation department, comprising a bed (1) and a limiting plate (101), wherein the limiting plate (101) is installed on one side of the inner wall of the bed (1), characterized in that: The inner wall of the bed (1) is equipped with a transverse rod (102), a movable sleeve (103) is slidably installed on the outer surface of the transverse rod (102), an adjusting shell (104) is fixedly installed on the outer surface of the movable sleeve (103), a rotating groove (105) is provided on the inner wall of the adjusting shell (104), a deflection groove (106) is provided on one side and the other side surface of the adjusting shell (104), an adjusting groove (107) is provided on the inner wall of the adjusting shell (104), a transmission mechanism is installed on the inner wall of the adjusting shell (104), and a limit component is installed on one side surface of the bed. The transmission mechanism includes an adjustment component and a fixing component. The adjustment component includes a rotary bearing (2), which is fixedly installed on the inner wall of the adjustment groove (107). A mating tube (201) is fixedly installed on the inner wall of the rotary bearing (2). A mating tooth (202) is provided on one side surface of the mating tube (201). A worm gear (203) is fixedly installed on the other side surface of the mating tube (201). An adjustment rod (204) is slidably installed on the inner wall of the worm gear (203). An adjustment handle (205) is installed at one end of the adjustment rod (204). A retaining ring (206) is fixedly installed on the outer surface of the adjustment rod (204).

2. The rehabilitation department bedridden patient positioning fixation structure according to claim 1, characterized in that, There are two limiting plates (101), which are equidistantly distributed on one side of the inner wall of the bed (1). There are two rotating grooves (105) equidistantly distributed on the inner wall of the adjusting shell (104). There are four deflection grooves (106), which are distributed in pairs on one side and the other side of the adjusting shell (104). The adjusting groove (107) is internally connected to the two rotating grooves (105).

3. The rehabilitation department bedridden patient positioning fixation structure according to claim 1, characterized in that, There are two rotary bearings (2), which are equidistantly distributed on the inner wall of the adjusting groove (107). Each of the two rotary bearings (2) has a corresponding mating tube (201). Each mating tube (201) has a mating tooth (202) on one side surface. Each mating tube (201) has a worm gear (203) installed on one side surface. The mating tube (201) is rotatably connected to the inner wall of the adjusting groove (107) through the rotary bearing (2). The retaining ring (206) is movably inserted into the inner wall of the mating tooth (202).

4. The rehabilitation department bedridden patient positioning fixation structure according to claim 1, characterized in that, The fixing assembly includes a positioning bearing (3), which is fixedly installed on the inner wall of the deflection groove (106). A connecting shaft (301) is fixedly installed on the positioning bearing (3). A gear (302) is fixedly installed on the outer surface of the connecting shaft (301). An adjusting plate (303) is fixedly installed on the outer surface of the connecting shaft (301). A support rod (304) is provided on the outer surface of the adjusting plate (303).

5. The rehabilitation department bedridden patient positioning fixation structure according to claim 4, characterized in that, There are four positioning bearings (3), which are distributed on the inner walls of four deflection grooves (106). A connecting shaft (301) is distributed on the inner wall of every two positioning bearings (3). A gear (302) is distributed on the outer surface of each connecting shaft (301). The gear (302) meshes with the worm (203). There are four adjusting discs (303), which are distributed on the outer surfaces of two connecting shafts (301) in pairs. There are two support rods (304), which are fixedly connected to two adjusting discs (303).

6. The rehabilitation department bedridden patient positioning fixation structure according to claim 1, characterized in that, The limiting component includes a bed board (4), which is installed on the top surface of the hospital bed (1). A sliding plate (401) is fixedly installed on one side surface of the hospital bed (1). A sliding plate (402) is slidably installed on the outer surface of the sliding plate (401). A rotating limiting plate (403) is rotatably installed on one side surface of the sliding plate (402). A calibration positioning block (404) is provided on the bottom surface of the sliding plate (401).

7. The rehabilitation department bedridden patient positioning fixation structure according to claim 6, characterized in that, There are two slide plates (401), which are respectively distributed on one side and the other side of the bed (1). Sliding plates (402) are distributed on the outer surfaces of the two slide plates (401). The sliding plates (402) are rotatably connected to the inner wall of the adjusting rod (204). The rotating limiting plate (403) is distributed on one side surface of one of the sliding plates (402). The calibration positioning block (404) consists of several linearly arrayed blocks equidistantly distributed on the bottom surface of the sliding plate (402). The positioning block is in active contact with one side surface of the rotating limiting plate (403).

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