Modularized pressure sore prevention turning-over cushion and using method thereof

Abstract

The invention discloses a modularized pressure sore prevention turning-over cushion and a using method thereof, and relates to the technical field of medical nursing equipment, the modularized pressure sore prevention turning-over cushion comprises a cushion body, supporting plates are symmetrically arranged in the cushion body, a flexible frame is arranged on the outer surface of each supporting plate, a massage mechanism used for massaging a patient is arranged in each flexible frame, and a bed sheet is arranged on the outer surface of the cushion body; a supporting plate is arranged on the cushion body, rolling shafts are arranged on the two sides of the bed sheet, a turning-over mechanism used for adjusting the positions of the rolling shafts is arranged on the side face of the cushion body, and the turning-over mechanism comprises a first wedge-shaped block which is arranged in the cushion body in a sliding mode and used for pushing the supporting plate to rotate. The body of the patient is stably and upwards held up, the rolling shaft on the other side releases the bed sheet to complete turning over, the patient is stably held up and guided to turn over by means of flexible tension of the bed sheet, meanwhile, the supporting plate deflects, a gap in the back of the patient is dynamically filled, and safety and comfort of the patient in the body position changing process are improved.

Description

Technical Field

[0001] This application relates to the field of medical care equipment technology, and in particular to modular pressure ulcer prevention turning mats and methods of using them. Background Technology

[0002] Pressure ulcers, as one of the major complications faced by long-term bedridden patients, have become a major challenge in the global healthcare field. According to statistics from the World Health Organization, the incidence of pressure ulcers in hospitalized patients is as high as 8% to 40%, and the incidence rate in intensive care unit patients is as high as 33% to 56%. Pressure ulcers not only cause severe physical pain and reduced quality of life for patients, but also significantly prolong hospital stays, increase the risk of infection, and may even endanger life in severe cases. Pressure ulcer prevention mainly relies on the regular turning care and experience judgment of nursing staff, usually adopting a fixed pattern of turning every two hours.

[0003] Existing turning pads often rely on the alternating inflation and deflation of multiple independent airbags to achieve position changes, or use simple mechanical structures for overall side turning. These methods are prone to causing unnecessary shaking of the patient's body during operation, and may even cause the patient to slip off the turning pad, posing a risk of slipping. In addition, the patient's turning movements are relatively stiff, affecting the patient's comfort. Furthermore, the position after side turning often depends on the shape of the pad to be passively maintained, which is not stable enough and may cause secondary injury to the patient, increasing the risk of nursing care. Summary of the Invention

[0004] To address the issue of patient instability during turning, this application provides a modular anti-pressure ulcer turning mat and its usage method.

[0005] The modular pressure ulcer prevention turning pad and its usage method provided in this application adopt the following technical solution: A modular pressure ulcer prevention turning pad includes a pad body. The pad body has symmetrically arranged support plates for supporting the patient inside. The outer surface of the support plates has a flexible frame for providing flexible support to the patient. The flexible frame has a massage mechanism for massaging the patient inside. A sheet is placed under the patient on the outer surface of the pad body. Rollers for turning the patient are provided on both sides of the sheet. A turning mechanism for adjusting the position of the rollers is provided on the side of the pad body. The turning mechanism includes a wedge-shaped block slidably disposed inside the pad body for pushing the support plates to rotate.

[0006] By adopting the above technical solution, the pad serves as the basic platform of the entire device, with symmetrically arranged support plates inside acting as the main support and functional carrier. The flexible frame on the surface of the support plate provides initial cushioning contact, while the massage mechanism within the frame performs active massage. The sheet covering the pad is the medium that directly contacts the patient. Rollers on both sides of the sheet move the patient's body by raising and lowering the sheet. The turning mechanism on the side coordinates the drive rollers and the support plate. The wedge-shaped block is a key transmission component that converts the drive into changes in the angle of the support plate, realizing the linkage between turning and back support. By extending an electric push rod on one side, the sheet forms a natural slope, and then the drive motor drives the rollers to rotate and retract the sheet, smoothly "lifting" the patient's body upward. The other roller releases the sheet to complete the turning. The flexible tension of the sheet smoothly lifts and guides the patient to turn to the side. At the same time, the support plate deflects, dynamically filling the gaps in the patient's back, improving the patient's safety and comfort during position changes, reducing the risk of the patient's body swaying and slipping, and improving the safety of the turning process.

[0007] Preferably, the turning mechanism includes fixed plates symmetrically arranged on the side of the pad, electric push rods symmetrically arranged on the top surface of the fixed plates, slides symmetrically arranged on the side of the pad, a moving plate slidably arranged inside the slide groove at the moving end of the electric push rod, a fixed column symmetrically arranged on the top surface of the slide groove, a roller rotatably arranged inside the fixed column, and a moving device for driving the wedge block to move inside the pad.

[0008] By adopting the above technical solution, the symmetrical fixed plate and electric push rod provide a detachable modular power source. The slide and moving plate ensure the linearity and stability of the lifting movement. Fixed column one provides a rotation fulcrum for the roller. When one side of the electric push rod extends, it pushes the moving plate up along the slide, thereby lifting the roller on that side through fixed column one, so that the sheet forms an inclined slope, creating the initial conditions for subsequent rolling and turning. At the same time, the moving device integrated into the mattress body begins to drive wedge block one, preparing for synchronous adjustment of the support plate angle.

[0009] Preferably, the moving device includes a protective frame symmetrically arranged on the side of the pad, a threaded rod symmetrically rotatably arranged inside the pad, a sliding block slidably arranged on the outer surface of the threaded rod, a sliding rod fixed to a wedge block on the outer surface of the sliding block, and the sliding rod slidably arranged inside the pad, and a snap-fit ​​device for supporting the support plate is arranged inside the pad.

[0010] By adopting the above technical solution, the protective frame 1 accommodates and protects the driving component. The threaded rod is driven to rotate by the motor, converting the rotational motion into linear motion. The sliding block moves horizontally along the threaded rod as a nut. The sliding rod 1 connects the sliding block and the wedge block 1, transmitting the linear thrust to the wedge block 1. When the wedge block 1 is pushed, its inclined surface acts on the inclined surface on the back of the support plate, thereby converting the horizontal thrust into the rotational torque of the support plate, realizing stepless adjustment of the support angle. The integrated snap-fit ​​device is used to automatically lock the position after adjustment.

[0011] Preferably, the snap-fit ​​device includes rectangular grooves symmetrically arranged inside the pad body, a plurality of protrusions are arranged inside the rectangular grooves, a baffle is arranged inside the rectangular grooves, an H-shaped connecting block is arranged on the bottom surface of the first wedge block, an auxiliary frame is arranged at the bottom of the H-shaped connecting block, a second wedge block adapted to snap-fit ​​the protrusions is arranged inside the auxiliary frame, a first reset spring is arranged between the second wedge block and the auxiliary frame, and a reset device for adjusting the position of the H-shaped connecting block is arranged inside the rectangular groove.

[0012] By adopting the above technical solution, the rectangular groove and the linear array of protrusions at its bottom form a rack and pinion track. The H-shaped connecting block slides in the groove following the first wedge block. The second wedge block is installed in the auxiliary frame at its bottom through a rotating shaft and is pressed down by the first return spring. During the adjustment of the support plate angle, the inclined surface of the second wedge block is pushed open by the protrusions, allowing the H-shaped connecting block to pass freely. When the support plate reaches the required angle and bears the pressure of the patient's back, the first wedge block has a tendency to retreat. At this time, the second wedge block is locked between two adjacent protrusions under the action of the spring, forming a reverse stop and realizing self-locking. The reset device is used to release this lock when needed.

[0013] Preferably, the reset device includes a displacement block disposed inside a rectangular groove, a reset block disposed on the side of the rectangular groove away from the displacement block, a cylinder 1 disposed inside the H-shaped connecting block and slidably disposed inside the rectangular groove, a sliding column 1 disposed on the side of the H-shaped connecting block near the displacement block, and a sliding column 2 disposed on the side of the H-shaped connecting block away from the sliding column 1.

[0014] By adopting the above technical solution, the displacement block and the reset block are fixed at both ends of the rectangular groove. The first cylinder is the sliding connecting shaft between the H-shaped connecting block and the first wedge block. The first sliding column and the second sliding column are the probes that trigger unlocking. When reset is required, the first wedge block is driven to continue to move in the reset direction. The second sliding column will contact the inclined surface on the reset block. This inclined surface forces the H-shaped connecting block to move perpendicular to the direction of movement (upward) along the first cylinder, thereby causing the second wedge block to disengage from the protrusion. The self-locking is released, and the support plate can be reset under its own structure or external force.

[0015] Preferably, the massage mechanism includes a second protective frame disposed inside the support plate, a third protective frame disposed on the side of the second protective frame close to the flexible frame, a plurality of massage columns disposed on the side of the third protective frame away from the second protective frame, a plurality of massage devices for performing massage disposed inside the second protective frame, and a driving device for driving the massage devices to perform massage disposed inside the second protective frame.

[0016] By adopting the above technical solution, the second and third protective frames together form a sealed cavity for installing massage drive and execution components. The first massage column is fixed in a ring on the surface of the third protective frame, providing a static contact support point. The internal drive device generates rotational power and converts the rotational motion into a specific composite motion trajectory, thereby driving multiple massage devices distributed in the cavity to make the massage head produce a vertical reciprocating pressing motion, which, in conjunction with the static first massage column, forms a composite massage effect combining point and surface.

[0017] Preferably, the driving device includes a rotating shaft disposed inside the second protective frame, a connecting rod disposed at one end of the rotating shaft, a rotating rod disposed on the side of the connecting rod away from the rotating shaft, a fixed column two disposed inside the second protective frame, a rotating sphere fixed to the rotating rod disposed inside the second fixed column, and a disc disposed on the outer surface of the rotating sphere.

[0018] By adopting the above technical solution, the rotating shaft is driven to rotate by a motor, and the connecting rod and rotating bar transmit the rotational motion of the rotating shaft to the rotating sphere. The fixed column two provides spherical support for the rotating sphere, enabling it to roll stably in a circular motion. The rotation of the rotating sphere drives the disk fixed to it to make synchronous circular planar motion. The motion trajectory of the disk is the mechanical basis for realizing multi-point, periodic pressing.

[0019] Preferably, the massage device includes a sliding rod II disposed inside the protective frame II, an auxiliary ball abutting against the disc on one side of the sliding rod II, and a return spring II sleeved on the outer surface of the sliding rod II between the auxiliary ball and the protective frame II.

[0020] By adopting the above technical solution, the sliding rod 2 is a rod that performs massage actions. The auxiliary ball at its top keeps in contact with the bottom surface of the circular disk that is making circular motion. When the disk rotates, different points on its circumference will periodically press down on different auxiliary balls, forcing the corresponding sliding rod 2 to overcome the elasticity of the return spring 2 and slide downward, thereby driving the massage head at the bottom to press on the patient's body surface. After the disk rotates past the point, under the action of the return spring 2, the sliding rod 2 drives the massage head to rebound, and so on, forming a rhythmic vertical massage.

[0021] Preferably, a limit block is provided on the outer surface of the cylinder.

[0022] By adopting the above technical solution, the function of the limiting block is to limit the axial sliding range of the H-shaped connecting block on the cylinder one. This ensures that during the reset process, when the sliding column two acts on the inclined surface of the reset block, the displacement of the H-shaped connecting block is controlled within a precise and limited stroke. This ensures that the wedge block two can be accurately and reliably lifted to the height of disengagement from the protrusion, while preventing the H-shaped connecting block from excessive displacement or dislodging from the connecting shaft, thus ensuring the stability and repeatability of the self-locking and unlocking actions.

[0023] The method of using a modular pressure ulcer prevention turning pad, applied to one type of modular pressure ulcer prevention turning pad mentioned above, includes the following steps: S1: Lay the mattress flat on the bed, then lay the sheet flat on top of the mattress, and place the two sides of the sheet on the rollers on the left and right sides of the mattress. Then, make sure the patient is lying supine on the sheet in the center of the mattress. S2: Control the extension of one side electric push rod. At this time, the moving plate on the same side drives the roller to rise upward. Then, drive the roller on that side to rotate and slowly roll up the sheet. At the same time, the roller on the opposite side releases the sheet. At this time, the sheet, like a hammock, steadily and gradually "lifts" the patient's body and moves it to one side, completing the turning from supine to lateral position. S3: While turning over, drive the threaded rod to rotate, causing the sliding block, sliding rod one, and wedge block one to move synchronously, thereby pushing the support plate to rotate around the axis, so that it conforms to the back curve of the patient after lying on the side, providing stable support; S4: During the adjustment of the support plate angle, the displacement block at the bottom of wedge block one moves synchronously, and wedge block two below it slides on the 417 array of the rectangular groove and is periodically pressed down. When the support plate reaches the preset angle and bears the pressure of the patient's back, wedge block two is locked between two adjacent protrusions under the action of reset spring one, realizing mechanical self-locking and preventing the support plate from rebounding. S5: After the patient is stably lying on the support board, the motor drives the rotating shaft, connecting rod and rotating bar to rotate, which in turn drives the rotating ball to make a circular motion on the fixed column two. The rotating ball drives the disc to rotate, and the auxiliary ball on the surface of the disc also makes a circular motion and periodically presses down the corresponding sliding rod two. The sliding rod two overcomes the elasticity of the return spring two and drives the massage head at the bottom to press the patient's back.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. By extending one side of the electric actuator to create a natural slope in the bed sheet, and then driving the rollers to rotate and retract the bed sheet, the patient's body is smoothly lifted upwards. The other side roller releases the bed sheet to complete the turning. The flexible tension of the bed sheet smoothly lifts and guides the patient to turn to the side. At the same time, the support plate deflects to dynamically fill the gaps in the patient's back, improving the patient's safety and comfort during the position change process, reducing the risk of the patient's body swaying and slipping, and improving the safety of the turning process.

[0025] Driven by a motor, the threaded rod rotates, which in turn moves the wedge block and pushes the support plate to rotate. The tilt angle can be adjusted synchronously with the turning process, providing active and close-fitting additional support for the back. Through the interlocking structure between the wedge block and the protrusion, the support can automatically lock when subjected to patient pressure, forming a rigid support structure. This effectively disperses local pressure and prevents the body from slipping back to the supine position, thus achieving a long-lasting pressure relief effect superior to purely flexible pads, providing dynamic support for the patient's back.

[0026] By rotating the sphere, the disc moves in a circular motion, which compresses the auxiliary sphere, causing the sliding rod and massage head to press down elastically. This creates a complex massage trajectory of spiral and vertical motion, simulating manual massage techniques to promote blood circulation and tissue fluid flow in the pressure area. This proactively prevents pressure sores from forming at a physiological level, achieving a functional upgrade from "passive pressure relief" to "active prevention". Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 For the purposes of this application Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 3 This is a schematic diagram of the connection structure of the support plates in this application; Figure 4 This is a schematic diagram of the connection structure of the sliding rod in this application; Figure 5 This is a partial exploded view of the structure of this application; Figure 6 This is a schematic diagram of the connection relationship structure of the H-type connecting block in this application; Figure 7 This is a partial exploded view of the structure of this application; Figure 8 This is a schematic diagram of the internal structure of the flexible frame in this application; Figure 9 This is a schematic diagram of the internal structure of the second protection frame of this application.

[0028] Reference numerals: 1. Mat; 2. Support plate; 3. Sheet; 31. Roller; 4. Turning mechanism; 41. Fixed plate; 42. Electric actuator; 43. Moving plate; 44. Slide rail; 45. Fixed column one; 46. Protective frame one; 47. Threaded rod; 48. Sliding block; 49. Sliding rod one; 410. Wedge block one; 411. Displacement block; 412. Reset block; 413. H-type connecting block; 414. Cylinder one; 415. Sliding column one; 416. Sliding column two; 417. Protrusion; 418. Baffle; 419. Auxiliary frame; 420. Wedge block two; 421. Reset spring one; 422. Rectangular groove; 5. Flexible frame; 6. Massage mechanism; 61. Protective frame two; 62. Protective frame three; 63. Massage column one; 64. Fixed column two; 65. Rotating ball; 66. Rotating rod; 67. Connecting rod; 68. Rotating shaft; 69. Disc; 610. Auxiliary ball; 611. Sliding rod II; 612. Return spring II. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0030] This application discloses a modular anti-pressure sore turning mat and its usage method.

[0031] Example 1 Reference Figures 1-3 The modular anti-pressure ulcer turning pad includes a pad body 1. A support plate 2 is symmetrically and rotatably connected to the upper inner wall of the pad body 1. The support plate 2 supports the patient's back. Several flexible frames 5 are fixedly connected to the outer surface of the support plate 2, providing flexible support for the patient. A massage mechanism 6 is installed inside the flexible frames 5, massaging the patient's back. A sheet 3 is placed on the outer surface of the pad body 1, and the sheet 3 is placed under the patient. Rollers 31 are connected to both sides of the sheet 3 via Velcro, and the rollers 31 are used for... When the patient turns over, a turning mechanism 4 is provided on the side of the pad 1. The turning mechanism 4 is used to adjust the position of the roller 31. The turning mechanism 4 includes a wedge block 410, which is slidably connected inside the pad 1. The wedge block 410 is used to push the support plate 2 to rotate. The side of the support plate 2 near the roller 31 is set as an inclined surface. The inclined surface of the wedge block 410 abuts against the inclined surface of the support plate 2. In the initial state, the support plate 2 is tilted due to the support of the wedge block 410, with an inclination angle of about 5 degrees. The turning mechanism 4 includes a fixed plate 41, which is symmetrically mounted on the side of the pad 1 by bolts. Electric push rods 42 are symmetrically mounted on the top surface of the fixed plate 41 by bolts. Slide tracks 44 are symmetrically opened on the side of the pad 1. A movable plate 43 is fixedly mounted on the moving end of the electric push rod 42 by bolts, and the movable plate 43 is slidably connected inside the slide track 44. A fixed column 45 is symmetrically fixedly connected to the top surface of the slide track 44. A roller 31 is rotatably connected inside the fixed column 45, and the roller 31 is driven to rotate by a motor.

[0032] The patient lies supine on the sheet 3 laid on top of the pad 1. When it is necessary to assist the patient to turn to the right, the control system commands the electric push rod 42 on the right to extend. The piston rod of the electric push rod 42 pushes the moving plate 43, causing it to slide vertically upward along the slide rail 44 on the side of the pad 1. Since the roller 31 is mounted on the moving plate 43 through the fixed column 45, the roller 31 also rises. This lifts the right side of the sheet 3 connected to the roller 31, naturally forming an upward smooth slope on the right side of the patient's body, preparing for subsequent movement of the body using the sheet 3. This design replaces the traditional sudden turning with mechanical lifting, making the start more stable. The flexible frame 5 on the surface of the support plate 2 ensures comfortable contact, while the massage mechanism 6 inside the frame can be activated after the patient is turned into position to actively massage the pressure on the back and prevent pressure sores.

[0033] Reference Figure 4 The pad 1 has a moving device inside, which drives the wedge block 410 to move. The moving device includes a protective frame 46, which is symmetrically fixed to the side of the pad 1 by bolts. The protective frame 46 is fixedly installed inside the protective frame 46 by bolts. The pad 1 has a threaded rod 47 symmetrically rotatably connected inside, and the threaded rod 47 is fixedly connected to the drive shaft of the motor 2. The outer surface of the threaded rod 47 is slidably connected to a sliding block 48. The sliding block 48 has a ball inside, and the sliding block 48 slides inside the pad 1. The sliding rod 49 is fixedly connected to the arc surface of the sliding block 48. The sliding rod 49 is fixedly connected to the wedge block 410, and the sliding rod 49 is slidably connected inside the pad 1.

[0034] As the turning and lifting begins, the motor (not shown in the figure) drives the threaded rod 47 to rotate. The sliding block 48, which forms a screw-nut pair with the threaded rod 47, moves horizontally accordingly. The sliding block 48 pushes the wedge block 410 to slide within the pad 1 through the sliding rod 49. The inclined surface of the wedge block 410 contacts the inclined surface on the back of the support plate 2 and generates relative motion, thereby converting the horizontal linear motion of the wedge block 410 into the rotational motion of the support plate 2 around its axis. This achieves precise and synchronous adjustment of the angle of the support plate 2, matching it with the lateral lying position that is about to be formed.

[0035] Reference Figures 5-7The pad 1 has a snap-fit ​​device inside, which supports the support plate 2. The snap-fit ​​device includes a rectangular groove 422, which is symmetrically opened inside the pad 1. Several protrusions 417 are fixedly installed on the bottom of the inner wall of the rectangular groove 422. The protrusions 417 are arranged linearly. A baffle 418 is fixedly installed on the bottom of the inner wall of the rectangular groove 422, and there is a gap between the baffle 418 and the protrusions 417. An H-shaped connector is fixedly connected to the bottom surface of the wedge block 410. Connecting block 413, H-shaped connecting block 413 is slidably connected inside rectangular groove 422. An auxiliary frame 419 is fixedly connected to the center of the bottom surface of H-shaped connecting block 413. A wedge block 420 is rotatably connected to the inner wall of auxiliary frame 419. Wedge block 420 can be snapped between two adjacent protrusions 417. A return spring 421 is fixedly connected to the inclined surface of wedge block 420. The side of return spring 421 away from wedge block 420 is fixedly connected to auxiliary frame 419. A reset device is provided inside the rectangular groove 422. The reset device is used to adjust the position of the H-type connecting block 413. The reset device includes a displacement block 411, which is fixedly installed inside the rectangular groove 422 and located on the side close to the wedge-shaped block 410. A reset block 412 is fixedly installed on the side of the rectangular groove 422 away from the displacement block 411. The displacement block 411 has a sliding groove 1 inside, and a slope 1 is formed on the side of the sliding groove 1 away from the wedge-shaped block 410. The reset block 412 has a sliding groove 2 inside, and a slope 2 is formed on the side of the sliding groove 1 close to the wedge-shaped block 410. The slope 1 and slope 2 are connected. In the opposite direction, a cylinder 414 is slidably connected through the interior of the H-shaped connecting block 413. The cylinder 414 is slidably connected to the inner wall of the rectangular groove 422, and a limit block is fixedly connected to the outer surface of the cylinder 414. The limit block makes the H-shaped connecting block 413 slide horizontally only on the outer surface of the cylinder 414 and not rotate. A sliding column 415 is fixedly connected to the side of the H-shaped connecting block 413 near the displacement block 411, and a sliding column 416 is fixedly connected to the side of the H-shaped connecting block 413 away from the sliding column 415. The sliding column 415 is slidably adapted to the first groove, and the sliding column 416 is slidably adapted to the second groove.

[0036] During the angle adjustment of the support plate 2, the H-shaped connecting block 413 fixed to the bottom of the first wedge block 410 moves synchronously within the rectangular groove 422. When the second wedge block 420 at the bottom of the H-shaped connecting block 413 moves, it will interfere with the protrusions 417 arranged linearly on the bottom of the groove. Since the second wedge block 420 is designed with an inclined surface and its tail is connected to the auxiliary frame 419 through the first reset spring 421, when it moves forward, the protrusions 417 will squeeze the inclined surface of the second wedge block 420, causing it to overcome the spring force and rotate (lift up), thus smoothly passing over each protrusion 417. At this time, the support plate 2 can be freely adjusted. When the adjustment is in place and the patient's body leans against the support plate 2 to generate reverse pressure, the second wedge block 420 swings back under the action of the spring, and its vertical surface is locked into the gap of the rear protrusion 417, forming a mechanical self-locking to prevent the support plate 2 from retracting under the patient's weight. When the nursing care is completed and the patient needs to be put back in a supine position, the threaded rod 47 continues to rotate, causing the wedge block 410 to move. Subsequently, the sliding post 416 on the H-shaped connecting block 413 will be embedded in the inclined groove (sliding groove 2) of the reset block 412. As the wedge block 410 continues to retract, the inclined surface forces the sliding post 416, together with the entire H-shaped connecting block 413, to move axially along the cylinder 414. This displacement causes the wedge block 420 to completely disengage from the two protrusions 417 it is engaged with, thereby releasing the self-locking. After unlocking, the support plate 2 can rotate back to its original position.

[0037] Reference Figures 8-9 The massage mechanism 6 includes a second protective frame 61, which is fixedly connected inside the support plate 2 and located inside the flexible frame 5. A third protective frame 62 is fixedly connected to the side of the second protective frame 61 closest to the flexible frame 5. Several massage columns 63 are fixedly connected to the side of the third protective frame 62 away from the second protective frame 61. The massage columns 63 are arranged in a circular array. A massage device is installed inside the second protective frame 61. Several massage devices are used to perform massage. A drive device is installed inside the second protective frame 61 to drive the massage device to perform massage. The drive device includes a rotating shaft 68, which is rotatably connected inside the second protective frame 61. A connecting rod 67 is fixedly connected to the end of the rotating shaft 68 away from the third protective frame 62. A rotating rod 66 is rotatably connected to the side of the connecting rod 67 away from the rotating shaft 68. A fixing column 64 is fixedly connected to the inner wall of the second protective frame 61. A rotating ball 65 is rotatably connected inside the fixing column 64. The rotating ball 65 is fixedly connected to the rotating rod 66. A disc 69 is fixedly connected to the outer surface of the rotating ball 65. The massage device includes a second sliding rod 611, which is slidably connected inside the second protective frame 61. An auxiliary ball 610 is rotatably connected to the side of the second sliding rod 611 near the disc 69, and the auxiliary ball 610 rolls and rubs against the disc 69. A return spring 612 is fixedly connected to the side of the auxiliary ball 610 away from the disc 69. The side of the return spring 612 away from the auxiliary ball 610 is fixedly connected to the second protective frame 61, and the return spring 612 is sleeved on the outer surface of the second sliding rod 611.

[0038] After the patient lies on their side on the support plate 2 and remains stable, the massage function can be activated. The drive device inside the massage mechanism 6 starts to work and generates power. This power drives the massage heads of multiple massage devices to move. At the same time, the massage column 63 fixed on the surface of the protective frame 62 provides a support point for the patient's back. The dynamic pressing of the massage head and the static support of the massage column 63 combine to form a dynamically changing pressure distribution on the surface of the patient's back, effectively simulating the combination of "kneading" and "fixed-point pressing" in manual massage, promoting local blood circulation. The massage drive process begins with the motor driving the rotating shaft 68 to rotate. The rotating shaft 68 drives the connecting rod 67 to move. The connecting rod 67 pushes the rotating rod 66, causing the rotating ball 65 to roll in a circle under the constraint of the ball socket provided by the fixed column 64. Since the disc 69 is fixedly installed on the rotating ball 65, the disc 69 also follows the rotating ball 65 to perform a strict circular planar motion. The trajectory of this circular motion is constant, providing a periodic and predictable downward pressure power source for all the massage execution units below. When the disc 69 rotates in a circular motion, the auxiliary balls 610 at different positions on its bottom surface are pressed down by the disc 69 in sequence. After being pressed, the auxiliary balls 610 transmit the force to the sliding rod 611 fixed to it, forcing the sliding rod 611 to slide downward along its guide hole, compressing the return spring 612, and finally causing the massage head installed at the bottom of the sliding rod 611 to protrude from the plane of the massage column 63, applying pressure to the skin. After the disc 69 has rotated past this point, the pressure on the auxiliary balls 610 disappears, the compressed return spring 612 releases its elasticity, pushes the sliding rod 611 back to its original position, and the massage head retracts accordingly. The disc 69 rotates continuously, thus realizing the cyclical and alternating pressing of different massage heads.

[0039] This application allows the device to be connected to a standard power outlet (AC220V) at the head of a hospital bed via a power cord, and then converted to the low-voltage DC power required by the device via an adapter. The motors and electric push rods 42 mentioned in this application are all existing technologies, and their structural principles will not be described in detail. The motors used in the roller 31, massage motors, and threaded rods 47 are all miniature geared motors of the JGA25370 series. The pad body 1 is equipped with a PLC control system. The PLC control system is electrically connected to the electric push rods 42 and the motors. The start and stop of the electric push rods 42 and the motors are controlled by the PLC control system. The electric push rods 42 are 24VDC medical silent electric push rods (recommended model: TiMotionTA15 or equivalent). After receiving the turning command, the PLC control system drives the electric push rods 42 using an S-shaped speed curve. The motor used by roller 31 is located on the side of fixed plate 45, the motor used by massage device is located inside protective frame 62, and the motor used by threaded rod 47 is located inside protective frame 46. The threaded rod 47 is made of Tr14x3 stainless steel trapezoidal threaded rod, and the sliding block 48 is fitted with a ZCuSn10Pb1 tin bronze nut. The disc 69 is made of 40Cr alloy steel and the surface is nitrided to withstand long-term friction with the auxiliary ball 610. The fixed plate 41, cylinder 42, roller 31, moving plate 43, etc. in this application can be disassembled and replaced as a whole.

[0040] Example 2 Instructions for using the modular pressure ulcer prevention turning mat include the following steps: S1: Lay the mattress 1 flat on the bed, then lay the sheet 3 flat on the top surface of the mattress 1, and attach the two sides of the sheet 3 to the rollers 31 on the left and right sides of the mattress 1 with Velcro. Then, ensure that the patient lies supine on the sheet 3 in the center of the mattress 1 to complete the initial positioning. S2: When it is necessary to turn the patient axially (e.g., to the right), the control system is activated. First, the electric push rod 42 on the right is instructed to extend. At this time, the moving plate 43 on the same side drives the roller 31 to lift upward. This action lifts the right side sheet 3, forming a natural slope on the side of the patient's body. Then, the roller 31 on that side is driven to rotate, slowly rolling up the sheet 3. At the same time, the roller 31 on the opposite side releases the sheet 3. Through the coordinated action of the rollers 31 on both sides, the sheet 3 acts like a soft hammock, generating a continuous lateral traction force, which smoothly and gradually "lifts" the patient's body and moves and rotates it to the right as a whole, thus completing the turn from supine to lateral position. S3: While turning over, drive the threaded rod 47 to rotate. The rotation of the threaded rod 47 causes the sliding block 48 on it to move horizontally, and then pushes the wedge block 410 to slide in the set direction through the sliding rod 49. The inclined surface of the wedge block 410 contacts the inclined surface on the back of the support plate 2, converting the horizontal thrust into the rotational torque of the support plate 2 around its axis of rotation, thereby increasing the inclination angle of the support plate 2 synchronously, dynamically conforming to the back curve formed after the patient lies on his side, and providing active, conforming and stable support for the spine and trunk. S4: During the movement of wedge block 410 to adjust the angle of support plate 2, the H-shaped connecting block 413 fixed at its bottom moves within the rectangular groove 422. Under the action of the return spring 421, the inclined surface of wedge block 420 at the bottom of the H-shaped connecting block 413 continuously interacts with the protrusions 417 of the linear array at the bottom of the groove. During movement, the protrusions 417 push wedge block 420 up to pass it. When support plate 2 is adjusted to the target angle and bears the pressure of the patient's body, wedge block 410 tends to slightly retract. At this time, wedge block 420 quickly swings back under the action of the spring force, and its vertical surface engages with the gap between two adjacent protrusions 417, forming a reliable mechanical self-locking mechanism. This mechanism effectively prevents support plate 2 from unexpectedly rebounding under the pressure of the patient's weight, ensuring long-term stability of the lateral decubitus position. S5: After the patient is stably positioned in a lateral decubitus position, the second motor drives the rotating shaft 68 to rotate. Through the connecting rod 67 and the rotating rod 66, the power is transmitted to the rotating ball 65. The rotating ball 65 moves in a circular motion under the constraint of the second fixed column 64, and drives the fixed disc 69 to rotate synchronously. The auxiliary ball 610 arranged in a circular pattern on the bottom surface of the disc 69 moves accordingly and periodically presses down on the corresponding sliding rod 611. Under pressure, the sliding rod 611 overcomes the elastic force of the return spring 612 and moves downward, driving the massage head at the end to protrude and apply fixed-point pressure to the patient's back. When the pressure point on the disc 69 is turned off, the sliding rod 611 quickly returns to its original position under the action of the spring. This cycle is repeated, forming a composite physical stimulation in the area of ​​the support plate 2 that combines a circular movement trajectory with vertical tapping, simulating artificial massage techniques to promote local blood circulation.

[0041] The implementation principle of the modular anti-pressure sore turning mat and its usage method in this application embodiment is as follows: When in use, the patient lies supine on the sheet 3. When turning over, the control system commands one side electric push rod 42 to raise the same side roller 31, making the sheet 3 slope, and drives the roller 31 to roll up the sheet 3. The opposite side roller 31 is released simultaneously, thus smoothly "lifting" the patient's body and turning them to the side. At the same time, the motor drives the wedge block 410 to move horizontally. Its inclined surface pushes the support plate 2 to rotate to conform to the curve of the patient's back. During the adjustment of the angle of the support plate 2, the self-locking mechanism (wedge block 420) linked with it can automatically lock into the gap of the protrusions 417 after passing the array of protrusions 417 to achieve mechanical locking when bearing weight, ensuring stable support. After the patient is stable in the side-lying position, the massage function can be activated: the motor drives the rotating ball 65 and the disc 69 to make circular motion, periodically pressing down multiple sliding rods 611 and the massage heads at their bottom, so that they perform vertical reciprocating pressing between the static massage columns, forming a compound massage trajectory to promote local blood circulation.

[0042] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A modular anti-pressure ulcer turning mattress, characterized in that: The utility model provides a patient support device, including the pad (1), the inside symmetry of pad (1) is provided with the support plate (2) for supporting the patient, the outside surface of support plate (2) is provided with the flexible frame (5) for the flexible support of patient, the inside of flexible frame (5) is provided with the massage mechanism (6) for the massage of patient, the outside surface of pad (1) is provided with the bed sheet (3) that places under the patient, both sides of bed sheet (3) are provided with the rolling axle (31) for the turning over of patient, the side of pad (1) is provided with the turning over mechanism (4) for adjusting the position of rolling axle (31), and the turning over mechanism (4) includes the wedge block one (410) that is slidably arranged in the inside of pad (1) for pushing support plate (2) to rotate.

2. The modular anti-pressure ulcer turnover mattress according to claim 1, characterized in that: The turning over mechanism (4) includes the fixed plate (41) that is symmetrically arranged on the side of the pad (1), the top surface of the fixed plate (41) is symmetrically provided with an electric push rod (42), the side of the pad (1) is symmetrically provided with a slide (44), the moving end of the electric push rod (42) is provided with a moving plate (43) slidably arranged in the inside of the slide (44), the top surface of the slide (44) is symmetrically provided with a fixed column one (45), the rolling axle (31) is rotatably arranged in the inside of the fixed column one (45), and the inside of the pad (1) is provided with a moving device for driving the wedge block one (410) to move.

3. The modular anti-pressure ulcer turnover mattress according to claim 2, characterized in that: The moving device includes a protection frame one (46) symmetrically arranged on the side of the pad (1), a threaded rod (47) is symmetrically rotatably arranged in the inside of the pad (1), a sliding block (48) is slidably arranged on the outer surface of the threaded rod (47), a sliding rod one (49) is arranged on the outer surface of the sliding block (48) and fixed with the wedge block one (410), the sliding rod one (49) is slidably arranged in the inside of the pad (1), and the inside of the pad (1) is provided with a clamping device for supporting the support plate (2).

4. The modular anti-pressure ulcer turnover mattress according to claim 3, characterized in that: The clamping device includes a rectangular groove (422) symmetrically arranged in the inside of the pad (1), a plurality of protrusions (417) are arranged in the inside of the rectangular groove (422), a baffle (418) is arranged in the inside of the rectangular groove (422), an H-shaped connecting block (413) is arranged on the bottom surface of the wedge block one (410), an auxiliary frame (419) is arranged on the bottom of the H-shaped connecting block (413), a wedge block two (420) is arranged in the inside of the auxiliary frame (419) and clamped with the protrusion (417), a reset spring one (421) is arranged between the wedge block two (420) and the auxiliary frame (419), and a reset device is arranged in the inside of the rectangular groove (422) for adjusting the position of the H-shaped connecting block (413).

5. The modular anti-pressure ulcer turnover mattress according to claim 4, characterized in that: The reset device comprises a displacement block (411) arranged inside a rectangular groove (422), a reset block (412) is arranged on the side of the rectangular groove (422) away from the displacement block (411), the inside of the H-shaped connecting block (413) is provided with a cylindrical one (414) slidingly arranged inside the rectangular groove (422), the side of the H-shaped connecting block (413) close to the displacement block (411) is provided with a sliding column one (415), and the side of the H-shaped connecting block (413) away from the sliding column one (415) is provided with a sliding column two (416).

6. The modular anti-pressure ulcer turnover mattress of claim 1, wherein: The massage mechanism (6) comprises a protection frame two (61) arranged inside the support plate (2), the side of the protection frame two (61) close to the flexible frame (5) is provided with a protection frame three (62), the side of the protection frame three (62) away from the protection frame two (61) is provided with a plurality of massage columns one (63), the inside of the protection frame two (61) is provided with a plurality of massage devices for realizing massage, and the inside of the protection frame two (61) is provided with a driving device for driving the massage device to massage.

7. The modular anti-pressure ulcer turnover mattress according to claim 6, characterized in that: The driving device comprises a rotating shaft (68) arranged inside the protection frame two (61), one end of the rotating shaft (68) is provided with a connecting rod (67), the side of the connecting rod (67) away from the rotating shaft (68) is provided with a rotating rod (66), the inside of the protection frame two (61) is provided with a fixed column two (64), the inside of the fixed column two (64) is provided with a rotating ball (65) fixedly arranged with the rotating rod (66), and the outer surface of the rotating ball (65) is provided with a disc (69).

8. The modular anti-pressure ulcer turnover mattress according to claim 7, characterized in that: The massage device comprises a sliding rod two (611) arranged inside the protection frame two (61), the side of the sliding rod two (611) is provided with an auxiliary ball (610) abutting against the disc (69), and a reset spring two (612) is arranged between the auxiliary ball (610) and the protection frame two (61) and sleeved on the outer surface of the sliding rod two (611).

9. The modular anti-pressure ulcer turnover mattress of claim 5, wherein: The outer surface of the cylindrical one (414) is provided with a limiting block.

10. The use method of the modular anti-pressure ulcer turning pad, applied to the modular anti-pressure ulcer turning pad of any one of claims 1-9, characterized in that, The method comprises the following steps: S1: lay the cushion (1) on the bed, then lay the bed sheet (3) on the top surface of the cushion (1), and arrange the edges of the bed sheet (3) on the left and right sides of the cushion (1) on the rollers (31) on the left and right sides of the cushion (1), then ensure that the patient lies on the bed sheet (3) in the center of the cushion (1); S2: control the extension of the electric push rod (42) on one side, at this time, the moving plate (43) on the same side drives the rollers (31) to lift upward, then drive the rollers (31) on the same side to rotate, slowly roll up the bed sheet (3), at the same time, the rollers (31) on the opposite side release the bed sheet (3), at this time, the bed sheet (3) "holds up" the patient's body like a hammock and moves to one side, completing the turning from the supine position to the lateral position; S3: while turning, drive the threaded rod (47) to rotate, drive the sliding block (48), the sliding rod one (49) and the wedge-shaped block one (410) to move synchronously, and then drive the support plate (2) to rotate around the shaft, so as to fit the back curve of the patient after lying on the side and provide stable support; S4: During the angle adjustment process of the support plate (2), the displacement block (411) at the bottom of the wedge-shaped block one (410) moves synchronously, and the wedge-shaped block two (420) below it slides on the 417 array of the rectangular groove (422) and is periodically pressed down. When the support plate (2) reaches the preset angle and bears the pressure of the patient's back, the wedge-shaped block two (420) is clamped between two adjacent protrusions (417) under the action of the reset spring one (421), realizing mechanical self-locking and preventing the support plate (2) from rebounding; S5: After the patient stably lies on the support plate (2), the rotating shaft (68), connecting rod (67) and rotating rod (66) are driven to rotate by the motor, and then the rotating ball (65) is driven to do circular motion on the fixed column two (64), the rotating ball (65) drives the disc (69) to rotate, the auxiliary ball (610) on the surface of the disc (69) does circular motion and periodically presses down the corresponding sliding rod two (611), the sliding rod two (611) overcomes the elastic force of the reset spring two (612), and drives the massage head at the bottom to press the patient's back.

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