Massage mechanism and side turning mechanism of bedsore prevention sickbed

Abstract

The utility model relates to an improved bedsore prevention sickbed, in particular to a massage mechanism and a side turning mechanism of the bedsore prevention sickbed. The arc surface of the massage roller rubs the pressed body part of a patient back and forth to simulate human hand massage, so that the blood circulation of the pressed body part of the patient is facilitated, and the patient is prevented from suffering from bedsores. Due to the design of the left turnover fence and the right turnover fence, the patient can be helped to turn over on the sickbed, and the lying comfort of the patient is improved.

Description

Technical Field

[0001] This utility model relates to an improved anti-bedsore bed, specifically a massage mechanism and a side-turning mechanism for an anti-bedsore bed. Background Technology

[0002] Normal people will spontaneously turn over to their side multiple times during sleep or while lying down, up to 20 times a night, to avoid prolonged pressure on certain areas, which can lead to poor blood circulation and cause bedsores or discomfort, thus improving sleep and lying comfort. For patients who are bedridden for extended periods due to illness or surgery and cannot turn over independently, bedsores are easily developed on their backs and buttocks. In such cases, caregivers are required to provide 24-hour care, assisting with turning and massage, which places a significant burden and stress on families and society.

[0003] A mattress (application number 2024107768716) uses alternating air inflation to create an alternating undulation on the mattress surface, allowing different parts of the patient's body to alternate contact with the mattress, preventing prolonged pressure on one area. Its disadvantages are: 1. Because it is an air mattress, the alternating effect is relatively poor, especially in cold weather when warm blankets are placed underneath. 2. It does not allow the patient to turn over or sit up, forcing them to lie down for extended periods, affecting their quality of life. 3. The air mattress has poor breathability, affecting patient comfort. 4. Its effectiveness is greatly affected by climate conditions, such as temperature and humidity.

[0004] The anti-bedsore bed (application number 2021102683224) has a bed board (horizontal bed board and swingable bed board) with several evenly distributed transverse long strip through holes, and does not have a massage function. Summary of the Invention

[0005] The purpose of this invention is to provide a massage mechanism and a side-turning mechanism for an anti-bedsore bed.

[0006] A massage mechanism and a side-turning mechanism for an anti-bedsore bed include a bed frame 5 and a massage mechanism and a side-turning mechanism mounted on the bed frame 5.

[0007] The massage mechanism includes mounting plates 506 symmetrically arranged on both sides of the upper part of the bed frame 5. A rear plate 206 is fixed to the rear half of the two mounting plates 506. Massage rollers 101 are evenly distributed between the two rear plates 206. The massage rollers 101 are mounted on the rear plates 206 via bearings. A transmission gear 103 is mounted on a shaft on one side of the massage roller 101. The transmission gear 103 meshes with a transmission rack 104. A slider 105 is fixed on the transmission rack 104. The slider 105 cooperates with a slide rail 106, which is fixed in place. On the mounting plate 506, a front plate 201 is hinged to the front end of the rear plate 206. Massage rollers 101 are evenly distributed between the two front plates 201. The massage rollers 101 are mounted on the front plates 201 through bearings. A transmission gear 103 is mounted on the shaft on one side of the massage roller 101. When the front plate 201 is in a horizontal position, the transmission gear 103 of the massage roller 101 on it meshes with the transmission rack 104. The transmission rack 104 meshes with the gear on the shaft of the drive motor 107. The drive motor 107 is mounted on the bed frame 5.

[0008] The massage roller 101 is an incomplete cylinder, that is, it is formed by cutting off a piece parallel to the axis of the cylinder. Its circumferential surface is composed of an arc surface 102 and a cut-out plane 108. The cut-out planes 108 of all massage rollers 101 on the bed frame 5 face the same direction.

[0009] Two travel contacts are provided on the transmission rack 104, and a fixed contact is provided on the bed frame 5. The transmission rack 104 reciprocates between the two travel contacts. When the travel contacts on the transmission rack 104 touch the fixed contact on the bed frame 5, the PLC controller receives a closed signal. The PLC controller then controls the drive motor 107 to change the rotation direction, so that the massage roller 101 can rotate forward and backward within a 180° range. The cut-out plane 108 on the massage roller 101 can only move back and forth downward. When the two travel contacts on the transmission rack 104 contact the fixed contact on the bed frame 5, the cut-out plane 108 on the massage roller 101 is in a vertical position.

[0010] The side-turning mechanism includes a left side turning rail 301 and a right side turning rail 302 (defined as left and right based on the patient's position on the bed), both located below the massage roller 101. The left side turning rail 301 includes several evenly distributed L-shaped rods, the long side of which is horizontal and the short side is downward. The end of the long side is connected to the left side turning shaft 303 on the left side of the bed frame 5, and the two ends of the left side turning shaft 303 are hinged to the bed frame 5. The end of the short side is connected to a fixed rod, which is hinged to the telescopic end of the left side turning electric push rod 306. The left side turning electric push rod 306 is mounted on the side-turning support rod 501, which is fixed to the bottom of the bed frame 5.

[0011] The right-side turning rail 302 includes several evenly distributed L-shaped rods. The long side of each L-shaped rod is horizontal, and the short side is downward. The end of the long side is connected to the right-side turning shaft 304 on the right side of the bed frame 5. The two ends of the right-side turning shaft 304 are hinged to the bed frame 5. The end of the short side is connected to another fixed rod. The fixed rod is hinged to the telescopic end of the right-side turning electric push rod 305. The right-side turning electric push rod 305 is installed on the side turning support rod 501. The L-shaped rods of the right-side turning rail 302 are staggered with the L-shaped rods of the left-side turning rail 301.

[0012] When the cut-out plane 108 of the massage roller 101 is in a vertical position, the distance C between two adjacent massage rollers 101 is at its maximum. The L-shaped rod on the left turning bar 301 or the right turning bar 302 can swing in the distance C between the corresponding massage rollers 101 under the action of the corresponding electric push rod (only used when side turning is required).

[0013] The right-side flip electric push rod 305 and the left-side flip electric push rod 306 are controlled by a PLC controller or manually (the massage roller will not rotate when the side flip electric push rod is working).

[0014] This invention uses the arc surface of the massage roller to rub back and forth against the patient's pressure points, simulating a human hand massage. This promotes blood circulation in the pressure areas and helps prevent bedsores. The design of the left and right turning rails assists the patient in turning over in bed, improving bed rest comfort. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the anti-bedsore bed that includes this utility model.

[0016] Figure 2 This is a schematic diagram (end view) showing the maximum distance between two adjacent massage rollers of this utility model.

[0017] Figure 3 This is a schematic diagram of the side-turning mechanism of this utility model.

[0018] Figure 4 for Figure 3 Schematic diagram of the right-side turning fence structure.

[0019] Figure 5 This is a schematic diagram of the structure of an embodiment. Detailed Implementation

[0020] This embodiment includes a bed frame 5, and a massage mechanism, a side-turning mechanism, and a sitting-up mechanism installed on the bed frame 5.

[0021] like Figure 1As shown, the massage mechanism mainly includes: massage rollers 101, transmission gears 103, transmission racks 104, sliders 105, slide rails 106, and drive motors 107. Each massage roller 101 is mounted on a front plate 201 (13 massage rollers) or a rear plate 206 (15 massage rollers) by two rotating bearings. The rear plate 206 is fixed to a mounting plate 506, and a front plate 201 is hinged to the front end of the rear plate 206. The shaft of each massage roller 101 is fixed to a transmission gear 103, and the transmission rack 104 is below the transmission gear 103. All transmission gears 103 and transmission racks 104 mesh. Two sliders 105 are installed below the transmission rack 104, and the slide rails 106 are fixed to the mounting plate 506. The sliders 105 and slide rails 106 are installed together, so that the transmission rack 104 can move back and forth. The drive motor 107 is mounted on the bed frame 5. The drive motor 107 drives the transmission rack 104 to move back and forth via gears. The transmission rack 104 drives all the massage rollers 101 to rotate clockwise or counterclockwise via transmission gears 103. Because all the transmission gears 103 are driven by the same transmission rack 104, the drive motor 107 can drive all the massage rollers 101 to rotate clockwise or counterclockwise simultaneously, thus ensuring that all the massage rollers 101 rotate synchronously, allowing the patient to move longitudinally on the bed board formed by the massage rollers 101. To ensure the massage roller 101 rotates within a 180° range, so that the patient's body only contacts the curved surface 102, two travel contacts are installed on the transmission rack 104, and a fixed contact is placed on the bed frame 5. The two travel contacts allow the massage roller 101 to rotate 180°. When the travel contact touches the fixed contact on the bed frame 5, a signal is transmitted to the controller (such as a PLC controller). The controller causes the drive motor 107 to stop rotating in that direction and rotate in the opposite direction, repeating this process. In this way, the patient moves longitudinally back and forth on the bed board formed by the massage rollers 101, alternating the pressure points and preventing bedsores caused by prolonged pressure on one area.

[0022] The principle of massage: A cylindrical massage roller 101 is used to simulate a human hand massaging the patient. The structure of the massage roller 101 is as follows... Figure 2As shown, the surface has two surfaces: a cut-out plane 108 and an arcuate surface 102, with a fixed shaft passing through its center. A bed board composed of several massage rollers 101 laid flat has small gaps between adjacent rollers. The patient lies on this bed board. The body contacts the arcuate surface 102 of the massage rollers 101, not the cut-out plane 108. As all the massage rollers 101 rotate clockwise and counterclockwise, the body moves back and forth, and the contact point between the body and the arcuate surface 102 changes accordingly, preventing prolonged pressure on any one part of the body and simulating a human hand massage. During the massage, the massage rollers 101 rotate 180° clockwise and counterclockwise, ensuring that the body only contacts the arcuate surface 102 and not the cut-out plane 108, and the gaps between adjacent massage rollers 101 are also small. Therefore, by repeatedly rotating all the massage rollers 101 clockwise and counterclockwise, the support points between the entire human body and the bed board can be changed. This avoids long-term contact and pressure between a certain part of the body and the support surface, which can lead to poor blood circulation. It can also simulate the massage of the contact and pressure surface by human hands, thereby eliminating bedsore lesions and preventing patients from developing bedsores.

[0023] The side-turning mechanism is located below the massage roller 101 and mainly consists of a left side-turning rail 301, a right side-turning rail 302, a left side-turning shaft 303, a right side-turning shaft 304, a left side-turning electric push rod 306, a right side-turning electric push rod 305, and a side-turning support rod 501, etc. Figure 3 , Figure 4 As shown. When not turning over, the long sides of the L-shaped rods in the left turning rail 301 and right turning rail 302 are horizontal, and the short sides face downwards; the left turning shaft 303 and right turning shaft 304 are respectively installed on the left and right sides of the bed frame 5. The left turning rail 301 can rotate around the left turning shaft 303, and the right turning rail 302 can rotate around the right turning shaft 304. The left turning electric push rod 306 and the right turning electric push rod 305 are installed on the side turning support rod 501. The telescopic end of the left turning electric push rod 306 is connected to the fixed rod of the left turning rail 301, and the telescopic end of the right turning electric push rod 305 is connected to another fixed rod of the right turning rail 302. The side turning support rod 501 is fixed to the bottom of the bed frame 5.

[0024] When side turning is not required, both the left and right electric turning levers 306 and 305 are in the retracted state. At this time, the left and right turning rails 301 and 302 are horizontal and directly below the massage roller 101. The patient lies on the massage roller 101 without contact with either the left or right turning rails 301 or 302. When side turning is required, the drive motor 107 drives the transmission rack 104 via a motor gear. The transmission rack 104 drives the transmission gear 103, causing the massage roller 101 to rotate. When the travel contact point on the transmission rack 104 contacts the fixed contact point on the bed frame 5 (indicator light illuminates), the massage roller 101 rotates to the vertical position of the cut-out plane 108. Figure 2 As shown, the gap C between adjacent massage rollers 101 is at its maximum at this time, and the drive motor 107 stops rotating. The gap C between adjacent massage rollers 101 allows the L-shaped bars (6-10 bars, 3 fewer at the front end of the bed frame 5 to avoid affecting the lifting and lowering of the sitting-up electric push rod 202) on the left turning rail 301 or the right turning rail 302 to pass through the gap C. Only one rail can pass through each gap C, and the left turning rail 301 and the right turning rail 302 are staggered. When turning to the right is required (based on the patient's lying position), the right turning electric push rod 305 extends, the left turning electric push rod 306 retracts, and the right turning electric push rod 305 pushes the right turning rail 302 upward. The right turning rail 302 rotates around the right turning axis 304, helping the patient to turn to the right. After turning to the right is completed, the right turning electric push rod 305 retracts and returns to the horizontal state. When the patient needs to turn to the left, the left-side turning actuator 306 extends, while the right-side turning actuator 305 retracts. The left-side turning actuator 306 pushes the left-side turning rail 301 upward, causing the left-side turning rail 301 to rotate around the left-side turning axis 303, thus helping the patient turn to the left. After the left-side turning is complete, the left-side turning actuator 306 retracts and returns to a horizontal position.

[0025] The two travel contacts installed on the transmission rack 104 and the fixed contact on the bed frame 5 are also used for side-turning control.

[0026] Sitting-up aids are designed to help patients sit up to take medication, eat, and communicate with others, such as... Figure 5 As shown. The sitting-up mechanism consists of a front plate 201 and its massage rollers 101, and a sitting-up electric actuator 202 mounted on the bed frame 5. The sitting-up electric actuator 202 is located at the bottom of the front end of the bed frame 5, and its telescopic end is hinged to the connecting plate at the front end of the front plate 201. When the sitting-up electric actuator 202 retracts, the front plate 201 lies flat on the bed frame 5, in the same plane as the rear plate 206, as shown. Figure 1 As shown, the bed is in a supine position at this time; when the electric actuator 202 extends, it pushes the front plate 201 and its massage rollers 101 upwards, and the transmission gear 103 on the massage rollers 101 on the front plate 201 separates from the transmission rack 104, at which point the bed is in a sitting position, as shown. Figure 5 As shown.

[0027] When the drive motor 107 rotates clockwise, the transmission rack 104 moves forward, and the massage roller 101 also rotates clockwise. When the rear travel contact point on the transmission rack 104 contacts the fixed contact point on the bed frame 5, the cut-out plane 108 of the massage roller 101 is in a vertical position. At this time, a signal is generated to the controller, which reacts by causing the drive motor 107 to reverse. The transmission rack 104 then moves backward, and the massage roller 101 rotates counterclockwise. After the transmission rack 104 moves backward for a period of time, the fixed contact point on the bed frame 5 contacts the front travel contact point on the transmission rack 104, and the cut-out plane 108 of the massage roller 101 is again in a vertical position. At this time, a signal is also generated to the controller, which reacts by causing the drive motor 107 to resume clockwise rotation, and the transmission rack 104 moves forward. This process repeats, restricting the transmission rack 104 to reciprocate between the front and rear travel contacts. The massage roller 101 rotates approximately 180°, which constitutes the massage process. The two travel contacts installed on the transmission rack 104 and the fixed contact on the bed frame 5 are used for both side-turning control and massage travel control.

[0028] When a side-turning motion is needed, the massage function is switched to the side-turning function. When the cut-out plane 108 on the massage roller 101 is in a vertical position, the drive motor 107 stops rotating, and the gap C between two adjacent massage rollers 101 is at its maximum. Then, activating the left side-turning electric actuator 306 or the right side-turning electric actuator 305 will complete the corresponding side-turning action.

[0029] The Siemens S7-200 PLC controller is used to program the massage, side-turning, and sitting-up functions of the anti-decubitus bed. The control system includes both automatic and manual control. The automatic massage and side-turning functions are programmed to switch to left side turning after a certain period (e.g., 1-2 hours). After a certain period (e.g., 5-10 minutes), it switches back to automatic massage. After another period (e.g., 1-2 hours), it switches to right side turning after a certain period (e.g., 5-10 minutes), and then back to automatic massage, and so on. When the patient needs to sit up, pressing a manual button switches the bed from massage or side-turning to sitting-up. After sitting up, pressing the manual button again returns the bed to its original massage or side-turning function.

Claims

1. A massage mechanism and a side-turning mechanism for an anti-bedsore bed, characterized in that: Includes a bed frame (5), a massage mechanism and a side-turning mechanism mounted on the bed frame (5), The massage mechanism includes mounting plates (506) symmetrically arranged on both sides of the upper part of the bed frame (5). A rear plate (206) is fixed to the rear half of the two mounting plates (506). Massage rollers (101) are evenly distributed between the two rear plates (206). The massage rollers (101) are mounted on the rear plates (206) through bearings. A transmission gear (103) is mounted on the shaft on one side of the massage roller (101). The transmission gear (103) meshes with a transmission rack (104). A slider (105) is fixed on the transmission rack (104). The slider (105) cooperates with a slide rail (106). The slide rail (106) is fixed. On the mounting plate (506); a front plate (201) is hinged to the front end of the rear plate (206), and massage rollers (101) are evenly distributed between the two front plates (201). The massage rollers (101) are mounted on the front plates (201) through bearings. A transmission gear (103) is mounted on the shaft on one side of the massage rollers (101). When the front plate (201) is in a horizontal position, the transmission gear (103) of the massage rollers (101) on it meshes with the transmission rack (104). The transmission rack (104) meshes with the gear on the shaft of the drive motor (107). The drive motor (107) is mounted on the bed frame (5). The massage roller (101) is an incomplete cylinder, that is, it is formed by cutting off a piece parallel to the axis of the cylinder. Its circumferential surface is composed of an arc surface (102) and a cut-out plane (108). The cut-out planes (108) of all massage rollers (101) on the bed frame (5) face the same direction. Two travel contacts are set on the transmission rack (104), and a fixed contact is provided on the bed frame (5). The transmission rack (104) reciprocates between the two travel contacts. When the travel contacts on the transmission rack (104) touch the fixed contact on the bed frame (5), the PLC controller receives a closed signal. The PLC controller then controls the drive motor (107) to change the rotation direction, so that the massage roller (101) rotates in both directions within a 180° range. The cut-out plane (108) on the massage roller (101) can only move back and forth downwards. When the two travel contacts on the transmission rack (104) contact the fixed contact on the bed frame (5), the cut-out plane (108) on the massage roller (101) is in a vertical position. The side-turning mechanism includes a left-side turning bar (301) and a right-side turning bar (302), both located below the massage roller (101); the left-side turning bar (301) includes several evenly distributed L-shaped rods, the long side of the L-shaped rods is horizontal, the short side is downward, the end of the long side is connected to the left-side turning shaft (303) on the left side of the bed frame (5), the two ends of the left-side turning shaft (303) are hinged to the bed frame (5); the end of the short side is connected to a fixed rod, the fixed rod is hinged to the telescopic end of the left-side turning electric push rod (306), the left-side turning electric push rod (306) is installed on the side-turning support rod (501), and the side-turning support rod (501) is fixed to the bottom of the bed frame (5); The right-side turning rail (302) includes several evenly distributed L-shaped rods. The long side of the L-shaped rod is horizontal and the short side is downward. The end of the long side is connected to the right-side turning shaft (304) on the right side of the bed frame (5). The two ends of the right-side turning shaft (304) are hinged to the bed frame (5). The end of the short side is connected to another fixed rod. The fixed rod is hinged to the telescopic end of the right-side turning electric push rod (305). The right-side turning electric push rod (305) is installed on the side turning support rod (501). The L-shaped rods of the right-side turning rail (302) are staggered with the L-shaped rods of the left-side turning rail (301). When the cut-out plane (108) of the massage roller (101) is in a vertical position, the distance C between two adjacent massage rollers (101) is the largest. The L-shaped rod on the left turning bar (301) or the right turning bar (302) can swing in the distance C between the corresponding massage rollers (101) under the action of the corresponding electric push rod. The right-side flip-up electric actuator (305) and the left-side flip-up electric actuator (306) are controlled by a PLC controller or manually.

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