A medical care pressure injury prevention device

Abstract

The application discloses a medical nursing pressure injury prevention device and belongs to the technical field of medical auxiliary devices. The device comprises a bed frame, the inside of the bed frame is fixedly connected with a first lying plate, one side of the first lying plate is provided with a second lying plate, the inside of the second lying plate is provided with a rotating roller, the lower end of the bed frame is provided with an adjusting assembly, and the lower end of the first lying plate is provided with a lower limb massage assembly. The adjusting assembly is arranged to adjust the angle of the second lying plate, so that the risk of exacerbation of the illness of the patient due to forced getting up is reduced. The handle structure is arranged to facilitate the patient to hold, so that the patient is prevented from falling due to the weakness of the upper limbs. The lower limb massage assembly is arranged to massage the lower limbs of the patient, so that the pressure injury of the patient due to long-time prohibition of the lower limbs is avoided. The practicality of the device is improved. The limiting mechanism is arranged to limit the massage block, so that the massage block is prevented from being separated from the inside of the first lying plate due to gravity.

Description

Technical Field

[0001] This invention belongs to the field of medical auxiliary device technology, specifically relating to a device for preventing pressure injuries in internal medicine nursing. Background Technology

[0002] Pressure ulcers, also known as bedsores or pressure injuries, are injuries, ulcers, or necrosis caused by prolonged pressure on local tissues, leading to impaired blood circulation, ischemia, hypoxia, and malnutrition of the skin and subcutaneous tissues. They are commonly found on bony prominences such as the sacrum, coccyx, heels, and buttocks.

[0003] Chinese Patent Application No. 202223085189.8 discloses a device for preventing pressure injuries in internal medicine care. The device includes two U-shaped legs, with two crossbars fixedly installed between the two U-shaped legs. A backrest is fixedly installed on the top of each U-shaped leg. A first reclining board is fixedly installed on one side between the two crossbars. A second reclining board is rotatably installed in the middle of the two crossbars, located on the other side between the two crossbars. Multiple rotating plates are rotatably installed at equal intervals on one side of the inner side of the second reclining board. A rectangular rod is fixedly installed at one end of each rotating plate. An adjusting rod is rotatably installed in a mounting hole, with the rectangular rod inserted into the adjusting rod. Limiting blocks located inside limiting holes are fixedly installed on both sides of the adjusting rod. This invention can prevent patients from being supported by a hard board, thereby preventing pressure injuries. It has a simple structure, is easy to use, and has good practical value.

[0004] The aforementioned patent has the following drawbacks: the preventive device lacks an adjustment component. When the patient's upper body lies on the upper part of the second reclining board, the lack of measures to adjust the angle of the second reclining board makes it difficult for the patient to get up. Forcing the patient to get up can easily cause the condition of the affected area to worsen. The preventive device also lacks a lower limb massage component. When the patient's lower limbs are placed on the upper part of the first reclining board, the lack of massage for a long time can easily lead to pressure injuries to the lower limbs, which is not conducive to improving the practicality of the device. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides a medical nursing pressure injury prevention device, featuring an adjustable second reclining board angle and lower limb massage capabilities.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an internal medicine nursing pressure injury prevention device, comprising a bed frame, a first reclining board fixedly connected inside the bed frame, a second reclining board disposed on one side of the first reclining board, a rotating roller disposed inside the second reclining board, an adjustment component disposed at the lower end of the bed frame, and a lower limb massage component disposed at the lower end of the first reclining board.

[0007] Preferably, the adjustment assembly includes a fixed plate, a vertical plate, a fixed shaft, a lead screw, a sliding plate, an armrest mechanism, a support plate, a first gear, a rotating rod, a transmission rod, and a worm gear. The lower end of the bed frame is fixedly connected to the fixed plate, the upper end of the fixed plate is fixedly connected to the vertical plate, the interior of the vertical plate is rotatably connected to the fixed shaft, one side of the interior of the vertical plate is rotatably connected to the lead screw, the surface of the lead screw is threadedly connected to the sliding plate, a support plate is symmetrically arranged on one side of the sliding plate, rotating rods are rotatably arranged at both ends of the support plate, the other end of the surface of the lead screw is fixedly connected to the first gear, the upper end of the first gear is provided with a worm gear, the interior of the worm gear is fixedly connected to the transmission rod, and armrest mechanisms are symmetrically arranged on both sides of the fixed plate.

[0008] Preferably, the handrail mechanism includes a fixed cylinder, bolts, a telescopic rod, a handrail plate, and a sponge pad. Fixed cylinders are symmetrically arranged on both sides of the fixed plate. A telescopic rod is slidably connected inside the fixed cylinder. Bolts are threaded inside the telescopic rod. A handrail plate is fixedly connected to the upper end of the telescopic rod. A sponge pad is fixedly connected to the upper end of the handrail plate.

[0009] Preferably, the lower end of the sliding plate is symmetrically provided with sliders, and the inside of the fixed plate is symmetrically provided with grooves, and the sliders are slidably connected inside the grooves.

[0010] Preferably, limit blocks are fixedly connected to both ends of the lead screw, and a turntable is fixedly connected to one end of the transmission rod, with several grooves formed on the surface of the turntable.

[0011] Preferably, the lower limb massage assembly includes a fixed frame, a sliding frame, a rotating shaft, a second gear, a rack, a motor, a top plate, push bars, massage blocks, a ramp, and a limiting mechanism. The lower end of the first reclining plate is fixedly connected to the fixed frame. The sliding frame is slidably connected inside the fixed frame. The rotating shaft is rotatably connected inside the sliding frame. A second gear is fixedly connected to the surface of the rotating shaft. A motor is installed at one end of the rotating shaft. A rack meshes with the lower end of the second gear. The upper end of the sliding frame is fixedly connected to the top plate. Push bars are symmetrically arranged at the upper end of the top plate. Several massage blocks are slidably connected inside the first reclining plate. Limiting mechanisms are symmetrically arranged on both sides of the massage blocks. A ramp is fixedly connected to the lower end of each massage block.

[0012] Preferably, the limiting mechanism includes a connecting plate, a sliding rod, a spring, and a limiting ring, wherein connecting plates are symmetrically arranged on both sides of the massage block, a sliding rod is slidably connected inside the connecting plate, a spring is provided at the upper end of the connecting plate, and a limiting ring is fixedly connected to the lower end of the sliding rod.

[0013] Preferably, the lower end of the top plate is symmetrically provided with support blocks, the lower end of the support blocks is provided with rollers, and the support blocks are internally connected with limit rods.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention enables the adjustment of the angle of the second reclining board by setting an adjustment component, which makes it easier for the patient to get up safely, reduces the risk of the patient's condition worsening due to forcibly getting up, improves the reliability of the device, and sets up a handrail mechanism to facilitate the patient's grip and prevent the patient from falling due to upper limb weakness.

[0015] 2. By setting up a lower limb massage component, the present invention realizes the massage of the patient's lower limbs, avoids pressure injury caused by prolonged immobilization of the patient's lower limbs, improves the practicality of the device, and sets up a limiting mechanism to limit the massage block and prevent the massage block from falling out of the interior of the first reclining board due to gravity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 This is a schematic diagram of the adjustment component of the present invention; Figure 4 This is a schematic diagram of the adjustable armrest mechanism of the present invention; Figure 5 This is a schematic diagram of the lower limb massage component of the present invention; Figure 6 This is a schematic diagram of the limiting mechanism of the lower limb massage component of the present invention.

[0017] In the diagram: 100, Bed frame; 110, First reclining board; 120, Second reclining board; 130, Rotating roller; 200, Adjustment assembly; 210, Fixed plate; 211, Upright plate; 212, Fixed shaft; 220, Lead screw; 230, Sliding plate; 240, Armrest mechanism; 241, Fixed cylinder; 242, Bolt; 243, Telescopic rod; 244, Armrest board; 245, Sponge pad; 250, Support plate; 260, Gear No. 1; 2 70. Rotating rod; 280. Transmission rod; 290. Worm gear; 300. Lower limb massage component; 310. Fixing frame; 320. Sliding frame; 321. Rotating shaft; 322. Gear No. 2; 323. Rack; 330. Motor; 340. Top plate; 350. Push bar; 360. Massage block; 370. Inclined plate; 380. Limiting mechanism; 381. Connecting plate; 382. Sliding rod; 383. Spring; 384. Limiting ring. Detailed Implementation

[0018] 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.

[0019] Example 1 Please see Figure 1-6 The present invention provides the following technical solution: an internal medicine nursing pressure injury prevention device, including a bed frame 100, a first reclining board 110 fixedly connected inside the bed frame 100, a second reclining board 120 provided on one side of the first reclining board 110, a rotating roller 130 provided inside the second reclining board 120, an adjustment component 200 provided at the lower end of the bed frame 100, and a lower limb massage component 300 provided at the lower end of the first reclining board 110.

[0020] Specifically, the adjustment assembly 200 includes a fixed plate 210, a vertical plate 211, a fixed shaft 212, a lead screw 220, a sliding plate 230, a handrail mechanism 240, a support plate 250, a first gear 260, a rotating rod 270, a transmission rod 280, and a worm gear 290. The lower end of the bed frame 100 is fixedly connected to the fixed plate 210, and the upper end of the fixed plate 210 is fixedly connected to the vertical plate 211. The fixed shaft 212 is rotatably connected inside the vertical plate 211. A lead screw 220 is rotatably connected to one side, and a sliding plate 230 is threadedly connected to the surface of the lead screw 220. A support plate 250 is symmetrically arranged on one side of the sliding plate 230, and a rotating rod 270 is rotatably arranged at both ends of the support plate 250. A first gear 260 is fixedly connected to the other end of the surface of the lead screw 220. A worm gear 290 is arranged at the upper end of the first gear 260, and a transmission rod 280 is fixedly connected inside the worm gear 290. Handrail mechanisms 240 are symmetrically arranged on both sides of the fixed plate 210.

[0021] By adopting the above technical solution, when adjusting the angle of the second lying plate 120, the transmission rod 280 is rotated to drive the worm gear 290 to rotate. The worm gear 290 drives the first gear 260 and the lead screw 220 to rotate. The lead screw 220 drives the sliding plate 230 to move. The sliding plate 230 drives the support plate 250 to move. During the movement, the rotating rod 270 at one end of the support plate 250 is driven to rotate by the support plate 250. This allows the support plate 250 to push the second lying plate 120 to rotate around the fixed shaft 212, thereby realizing the adjustment of the angle of the second lying plate 120.

[0022] Specifically, the handrail mechanism 240 includes a fixed cylinder 241, a bolt 242, a telescopic rod 243, a handrail plate 244, and a sponge pad 245. The fixed cylinders 241 are symmetrically arranged on both sides of the fixed plate 210. The telescopic rod 243 is slidably connected inside the fixed cylinder 241. The bolt 242 is threaded inside the telescopic rod 243. The handrail plate 244 is fixedly connected to the upper end of the telescopic rod 243. The sponge pad 245 is fixedly connected to the upper end of the handrail plate 244.

[0023] By adopting the above technical solution, when a handrail is needed, the handrail board 244 is pulled upward to move the two telescopic rods 243 upward. When it moves to the appropriate position, the bolt 242 is turned to pass through the fixing cylinder 241 and enter the interior of the telescopic rod 243, thereby fixing the handrail board 244. The patient can place their hands on the upper end of the sponge pad 245 at the upper end of the handrail board 244 to use force to support the body, while also preventing the patient's upper limbs from losing strength and causing a fall.

[0024] Specifically, the lower end of the sliding plate 230 is symmetrically provided with sliders, and the inside of the fixed plate 210 is symmetrically provided with grooves, and the sliders are slidably connected inside the grooves.

[0025] By adopting the above technical solution, when the sliding plate 230 moves, the sliding plate 230 drives the slider to slide inside the groove, which can stabilize the movement trajectory of the sliding plate 230.

[0026] Specifically, limit blocks are fixedly connected to both ends of the lead screw 220, and a turntable is fixedly connected to one end of the transmission rod 280. Several grooves are opened on the surface of the turntable.

[0027] By adopting the above technical solution, when using the adjustment component 200, the limiting block can prevent the lead screw 220 from disengaging from the interior of the upright plate 211 and the bed frame 100 when rotating, the turntable facilitates the user to rotate the transmission rod 280, and the groove can increase the friction of the turntable against the hand.

[0028] In this embodiment, during use: rotating the transmission rod 280 causes the worm gear 290 to rotate, which in turn drives the first gear 260 and the lead screw 220 to rotate. The lead screw 220 then moves the sliding plate 230, which in turn moves the support plate 250. During this movement, the rotating rod 270 at one end of the support plate 250 is rotated by the support plate 250, thereby causing the support plate 250 to push the second reclining plate 120 to rotate around the fixed axis 212, thus adjusting the angle of the second reclining plate 120. Pulling the handrail plate 244 upward causes the two telescopic rods 243 to move upward. When moved to the appropriate position, rotate bolt 242 to allow it to pass through fixed cylinder 241 and enter the interior of telescopic rod 243, thereby fixing handrail 244. Patients can place their hands on the upper end of sponge pad 245 of handrail 244 for support, while also preventing upper limb weakness that could lead to falls. Sliding plate 230 drives slider to slide inside the groove, stabilizing the movement trajectory of sliding plate 230. Limit block prevents lead screw 220 from disengaging from upright plate 211 and bed frame 100 when rotating. Turntable facilitates user rotation of transmission rod 280, and groove increases the friction of turntable on the hand.

[0029] Example 2 The difference between this embodiment and Embodiment 1 is that, specifically, the lower limb massage component 300 includes a fixed frame 310, a sliding frame 320, a rotating shaft 321, a second gear 322, a rack 323, a motor 330, a top plate 340, a push bar 350, a massage block 360, a ramp 370, and a limiting mechanism 380. The lower end of the first reclining plate 110 is fixedly connected to the fixed frame 310, the sliding frame 320 is slidably connected inside the fixed frame 310, and the rotating shaft is rotatably connected inside the sliding frame 320. 321, a second gear 322 is fixedly connected to the surface of the rotating shaft 321, a motor 330 is provided at one end of the rotating shaft 321, a rack 323 is meshed at the lower end of the second gear 322, a top plate 340 is fixedly connected to the upper end of the sliding frame 320, push bars 350 are symmetrically arranged at the upper end of the top plate 340, a number of massage blocks 360 are slidably connected inside the first lying plate 110, limit mechanisms 380 are symmetrically arranged on both sides of the massage blocks 360, and a ramp plate 370 is fixedly connected to the lower end of the massage blocks 360.

[0030] By adopting the above technical solution, when massaging the lower limbs, the motor 330 is started to drive the rotating shaft 321 and the second gear 322 to rotate. The second gear 322 and the rack 323 cooperate with each other, so that the rotating shaft 321 drives the sliding frame 320 to slide inside the fixed frame 310. The sliding frame 320 drives the top plate 340 and the push bar 350 to move. The push bar 350 pushes the ramp plate 370 to move upward. The ramp plate 370 can then push the massage block 360 upward through the first reclining plate 110 to lift and massage the patient's lower limbs. The limiting mechanism 380 resets the massage block 360 back into the interior of the first reclining plate 110.

[0031] Specifically, the limiting mechanism 380 includes a connecting plate 381, a sliding rod 382, ​​a spring 383, and a limiting ring 384. The massage block 360 is symmetrically provided with connecting plates 381 on both sides. The sliding rod 382 is slidably connected inside the connecting plate 381. The upper end of the connecting plate 381 is provided with a spring 383. The lower end of the sliding rod 382 is fixedly connected with the limiting ring 384.

[0032] By adopting the above technical solution, when the massage block 360 is reset, the spring 383 pushes the connecting plate 381 to move downward, and the connecting plate 381 drives the massage block 360 to move downward until the connecting plate 381 contacts the limiting ring 384 at the lower end of the sliding rod 382 and stops moving. This can realize the reset of the massage block 360 and prevent the massage block 360 from leaving the interior of the first reclining plate 110 due to gravity.

[0033] Specifically, support blocks are symmetrically arranged at the lower end of the top plate 340, and rollers are provided at the lower end of the support blocks. Limit rods are slidably connected inside the support blocks.

[0034] By adopting the above technical solution, when using the lower limb massage component 300, the top plate 340 drives the support block to move along the direction of the limit rod, preventing the top plate 340 from tilting when it moves. The rollers can reduce friction and facilitate the support block to slide at the bottom inside the fixed frame 310.

[0035] In this embodiment, during use: the motor 330 is started to drive the rotating shaft 321 and the second gear 322 to rotate. The second gear 322 and the rack 323 cooperate with each other, causing the rotating shaft 321 to drive the sliding frame 320 to slide inside the fixed frame 310. The sliding frame 320 drives the top plate 340 and the push bar 350 to move. The push bar 350 pushes the ramp plate 370 to move upward. The ramp plate 370 then pushes the massage block 360 upward through the first reclining plate 110, providing a massage to the patient's lower limbs. The limiting mechanism 380 then resets the massage block 360 to the first reclining plate 110. Inside the first reclining plate 110, the spring 383 pushes the connecting plate 381 to move downwards. The connecting plate 381 drives the massage block 360 to move downwards until the connecting plate 381 contacts the limiting ring 384 at the lower end of the sliding rod 382 and stops moving. This allows the massage block 360 to be reset, preventing the massage block 360 from leaving the inside of the first reclining plate 110 due to gravity. The top plate 340 drives the support block to move along the direction of the limiting rod, preventing the top plate 340 from tilting when moving. The rollers can reduce friction and facilitate the sliding of the support block at the bottom of the fixed frame 310.

[0036] In this invention, the motor 330 is a prior art technology, and the selected model is RS-540SH-1.

[0037] The structure and operating principle of the bed frame 100, the first reclining board 110, the second reclining board 120 and the rotating roller 130 in this invention have been disclosed in a medical nursing pressure injury prevention device disclosed in Chinese patent application number 202223085189.8.

[0038] The working principle and usage of this invention: When using the internal medicine nursing pressure injury prevention device, rotating the transmission rod 280 causes the worm gear 290 to rotate. The worm gear 290 drives the first gear 260 and the lead screw 220 to rotate. The lead screw 220 drives the sliding plate 230 to move, and the sliding plate 230 drives the support plate 250 to move. During the movement, the rotating rod 270 at one end of the support plate 250 is driven to rotate by the support plate 250, thereby causing the support plate 250 to push the second reclining plate 120 to rotate around the fixed axis 212, realizing the adjustment of the angle of the second reclining plate 120. Pulling up the handrail 244 causes the two telescopic rods 243 to move upwards. When they reach the appropriate position, rotating the bolt 242 allows it to pass through the fixing cylinder 241 and enter the interior of the telescopic rods 243, thus fixing the handrail 244. The patient can place their hands on the upper end of the sponge pad 245 of the handrail 244 for support, preventing the patient from falling due to upper limb weakness. The sliding plate 230 drives the slider to slide inside the groove, stabilizing the movement trajectory of the sliding plate 230. The limiting block prevents the lead screw 220 from disengaging from the upright plate 211 and the bed frame 100 when rotating, and the turntable then... When the user rotates the transmission rod 280, the groove increases the friction of the turntable against the hand, activating the motor 330 to drive the rotating shaft 321 and the second gear 322 to rotate. The second gear 322 and the rack 323 cooperate with each other, causing the rotating shaft 321 to drive the sliding frame 320 to slide inside the fixed frame 310. The sliding frame 320 drives the top plate 340 and the push bar 350 to move. The push bar 350 pushes the ramp plate 370 upward, which in turn pushes the massage block 360 upward through the first reclining plate 110, lifting and massaging the patient's lower limbs. The limiting mechanism 380 then ensures that the massage block... The massage block 360 is reset inside the first reclining plate 110. The spring 383 pushes the connecting plate 381 to move downward. The connecting plate 381 drives the massage block 360 to move downward until the connecting plate 381 contacts the limiting ring 384 at the lower end of the sliding rod 382 and stops moving. This resets the massage block 360 and prevents it from being removed from the inside of the first reclining plate 110 due to gravity. The top plate 340 drives the support block to move along the direction of the limiting rod to prevent the top plate 340 from tilting when moving. The rollers reduce friction and facilitate the sliding of the support block at the bottom of the fixed frame 310.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for preventing pressure injuries in internal medicine care, comprising a bed frame (100), characterized in that: The bed frame (100) is internally fixedly connected to a first reclining board (110), a second reclining board (120) is provided on one side of the first reclining board (110), a rotating roller (130) is provided inside the second reclining board (120), an adjustment component (200) is provided at the lower end of the bed frame (100), and a lower limb massage component (300) is provided at the lower end of the first reclining board (110).

2. The internal medicine nursing pressure injury prevention device according to claim 1, characterized in that: The adjustment assembly (200) includes a fixed plate (210), a vertical plate (211), a fixed shaft (212), a lead screw (220), a sliding plate (230), an armrest mechanism (240), a support plate (250), a first gear (260), a rotating rod (270), a transmission rod (280), and a worm gear (290). The lower end of the bed frame (100) is fixedly connected to the fixed plate (210), and the upper end of the fixed plate (210) is fixedly connected to the vertical plate (211). The fixed shaft (212) is rotatably connected inside the vertical plate (211). A lead screw (220) is rotatably connected to one side of the inner surface of the screw (220), and a sliding plate (230) is threadedly connected to the surface of the lead screw (220). A support plate (250) is symmetrically arranged on one side of the sliding plate (230), and a rotating rod (270) is rotatably arranged at both ends of the support plate (250). A first gear (260) is fixedly connected to the other end of the surface of the lead screw (220), and a worm (290) is arranged at the upper end of the first gear (260). A transmission rod (280) is fixedly connected inside the worm (290), and a handrail mechanism (240) is symmetrically arranged on both sides of the fixed plate (210).

3. The internal medicine nursing pressure injury prevention device according to claim 2, characterized in that: The handrail mechanism (240) includes a fixed cylinder (241), a bolt (242), a telescopic rod (243), a handrail plate (244), and a sponge pad (245). The fixed cylinder (241) is symmetrically arranged on both sides of the fixed plate (210). The telescopic rod (243) is slidably connected inside the fixed cylinder (241). The bolt (242) is threaded inside the telescopic rod (243). The handrail plate (244) is fixedly connected to the upper end of the telescopic rod (243). The sponge pad (245) is fixedly connected to the upper end of the handrail plate (244).

4. The internal medicine nursing pressure injury prevention device according to claim 2, characterized in that: The lower end of the sliding plate (230) is symmetrically provided with sliders, and the inside of the fixed plate (210) is symmetrically provided with grooves, and the sliders are slidably connected inside the grooves.

5. The internal medicine nursing pressure injury prevention device according to claim 2, characterized in that: Limiting blocks are fixedly connected to both ends of the lead screw (220), and a turntable is fixedly connected to one end of the transmission rod (280). Several grooves are opened on the surface of the turntable.

6. The internal medicine nursing pressure injury prevention device according to claim 1, characterized in that: The lower limb massage assembly (300) includes a fixed frame (310), a sliding frame (320), a rotating shaft (321), a second gear (322), a rack (323), a motor (330), a top plate (340), a push bar (350), a massage block (360), a ramp (370), and a limiting mechanism (380). The lower end of the first reclining plate (110) is fixedly connected to the fixed frame (310). The sliding frame (320) is slidably connected inside the fixed frame (310). The rotating shaft (321) is rotatably connected inside the sliding frame (320). A second gear (322) is fixedly connected to the surface of the shaft (321). A motor (330) is provided at one end of the shaft (321). A rack (323) meshes with the lower end of the second gear (322). A top plate (340) is fixedly connected to the upper end of the sliding frame (320). Push bars (350) are symmetrically arranged at the upper end of the top plate (340). Several massage blocks (360) are slidably connected inside the first lying plate (110). Limiting mechanisms (380) are symmetrically arranged on both sides of the massage blocks (360). A ramp plate (370) is fixedly connected to the lower end of the massage blocks (360).

7. The internal medicine nursing pressure injury prevention device according to claim 6, characterized in that: The limiting mechanism (380) includes a connecting plate (381), a sliding rod (382), a spring (383), and a limiting ring (384). The massage block (360) is symmetrically provided with connecting plates (381) on both sides. The sliding rod (382) is slidably connected inside the connecting plate (381). The upper end of the connecting plate (381) is provided with a spring (383), and the lower end of the sliding rod (382) is fixedly connected with a limiting ring (384).

8. The internal medicine nursing pressure injury prevention device according to claim 6, characterized in that: The lower end of the top plate (340) is symmetrically provided with support blocks, the lower end of the support blocks is provided with rollers, and the support blocks are internally connected with limit rods.

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