Massage mechanism and side turning mechanism of bedsore prevention sickbed

Abstract

The invention 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 blood of the pressed body part of the patient is smooth, 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] The present invention relates to an improved bedsore prevention hospital bed, specifically a massage mechanism and a side turning mechanism for a bedsore prevention hospital bed. Background Art

[0002] Normal people will turn over sideways autonomously many times during sleep and lying down, with more than 20 times of autonomous side turning in one night, so as to avoid bedsores or discomfort caused by poor blood circulation due to long-term local pressure, thereby improving the comfort of sleep and lying down. For patients who are ill or bedridden for a long time after surgery and cannot turn over autonomously, bedsores are very likely to occur on the back and buttocks. At this time, nursing staff need to take care of them 24 hours a day, helping them turn over and massage, which brings a great burden and pressure to families and society.

[0003] A mattress (application number 2024107768716) makes the surface of the mattress fluctuate alternately by means of alternating inflation, so that different parts of the patient's body come into contact with the mattress alternately, avoiding long-term pressure on one part. Its disadvantages are: 1. Because it is an air cushion, the alternating effect is poor, especially in cold weather, when a warm quilt is laid on it, the effect is even worse. 2. It cannot allow the patient to turn over sideways and sit up, and the patient can only lie down for a long time, affecting the patient's quality of life. 3. The air cushion has poor air permeability, affecting the comfort of the patient. 4. The use effect is greatly affected by the climate environment, such as temperature and humidity.

[0004] A bedsore prevention hospital bed (application number 2021102683224) has a bed board (a horizontal bed board and a swingable bed board) with a plurality of evenly distributed transverse long strip through-hole structures and does not have a massage function. Summary of the Invention

[0005] The purpose of the present invention is to provide a massage mechanism and a side turning mechanism for a bedsore prevention hospital bed.

[0006] A massage mechanism and a side turning mechanism for a bedsore prevention hospital bed, including a bed frame 5, a massage mechanism and a side turning mechanism installed 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. Rear plates 206 are fixed to the rear halves 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 to the transmission rack 104. The slider 105 cooperates with a slide rail 106. The slide rail 106 is fixed to the mounting plate 506. Front plates 201 are respectively hinged to the front ends of the rear plates 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 the horizontal position, the transmission gear 103 of the massage roller 101 thereon 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 consists of an arc surface 102 and a cut-out plane 108. The cut-out planes 108 of all the massage rollers 101 on the bed frame 5 face the same direction.

[0009] Two travel contacts are arranged on the transmission rack 104, one in the front and one in the back. A fixed contact point is arranged on the bed frame 5. The transmission rack 104 reciprocates between the two travel contacts. When the travel contact on the transmission rack 104 touches the fixed contact point on the bed frame 5, the PLC controller obtains a closed signal, and the PLC controller then controls the drive motor 107 to change the rotation direction, so that the massage roller 101 rotates forward and backward within a range of 180°, and 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 point on the bed frame 5, the cut-out plane 108 on the massage roller 101 is in the vertical position.

[0010] The side turning mechanism includes a left side turning rail 301 and a right side turning rail 302 (defining left and right with the patient lying on the hospital bed). The two are located below the massage roller 101. The left side turning rail 301 includes a number of evenly distributed L-shaped rods. The long sides of the L-shaped rods are horizontal and the short sides face downward. The ends of the long sides are connected to the left side turning shaft 303 on the left side of the bed frame 5. Both ends of the left side turning shaft 303 are hinged to the bed frame 5. The ends of the short sides are 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 mounted on the side turning support rod 501. The side turning support rod 501 is fixed to the bottom of the bed frame 5.

[0011] The right side turning bar 302 includes a number of evenly distributed L-shaped bars. The long sides of the L-shaped bars are horizontal, and the short sides face downward. The ends of the long sides are connected to the right side turning shaft 304 on the right side of the bed frame 5. Both ends of the right side turning shaft 304 are hinged to the bed frame 5. The ends of the short sides are connected to another fixed bar, and the fixed bar 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 bars of the right side turning bar 302 and the L-shaped bars of the left side turning bar 301 are arranged in a staggered manner.

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

[0013] The right side turning electric push rod 305 and the left side turning electric push rod 306 are controlled by a PLC controller or manually (the massage rollers do not rotate when the side turning electric push rods are working).

[0014] In the present invention, the arc surface of the massage roller rubs back and forth on the pressed body part of the patient, simulating manual massage, which is beneficial to the smooth blood circulation of the pressed body part of the patient and prevents the patient from getting bedsores. The design of the left side turning bar and the right side turning bar can help the patient turn over on the hospital bed, improving the patient's lying comfort. Brief Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the bedsore prevention hospital bed including the present invention.

[0016] Figure 2 It is a schematic diagram (end view) when the maximum distance between two adjacent massage rollers of the present invention.

[0017] Figure 3 It is a schematic diagram of the side turning mechanism of the present invention.

[0018] Figure 4 It is Figure 3 A schematic structural diagram of the right side turning bar in

[0019] Figure 5 It is a schematic structural diagram of the embodiment. Detailed Description of the Embodiment

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

[0021] Such as Figure 1As shown in the figure, the massage mechanism mainly includes: massage rollers 101, transmission gears 103, transmission racks 104, sliders 105, slide rails 106, drive motors 107, etc. Each massage roller 101 is mounted on the front plate 201 (13 massage rollers) or the rear plate 206 (15 massage rollers) by two rotating bearings. The rear plate 206 is fixed on the mounting plate 506, and the front end of the rear plate 206 is hinged to a front plate 201 respectively. The shaft of each massage roller 101 is fixed to a transmission gear 103. Below the transmission gear 103 is the transmission rack 104, and all the transmission gears 103 and the transmission racks 104 are meshed. Two sliders 105 are installed below the transmission rack 104. The slide rails 106 are fixed on the mounting plate 506, and the sliders 105 and the slide rails 106 are fitted and installed, so that the transmission rack 104 can reciprocate back and forth. The drive motor 107 is installed on the bed frame 5. The drive motor 107 drives the transmission rack 104 to reciprocate back and forth through gears. The transmission rack 104 drives all the massage rollers 101 to rotate clockwise or counterclockwise through the transmission gears 103. Since 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 at the same time, that is, it ensures that all the massage rollers 101 rotate synchronously, enabling the patient to move longitudinally on the bed board composed of the flat massage rollers 101. To ensure that the rotation angle range of the massage rollers 101 is 180°, so that the patient's body only contacts the arc surface 102, two stroke contacts are installed on the transmission rack 104, and a fixed contact point is arranged on the bed frame 5. The two stroke contacts in the front and back make the rotation angle of the massage rollers 101 be 180°. When the stroke contact touches the fixed contact point on the bed frame 5, a signal is transmitted to the controller (such as a PLC controller), and the controller makes the drive motor 107 stop rotating in this direction and rotate in the reverse direction, and so on. In this way, the patient moves longitudinally back and forth on the bed board composed of the flat massage rollers 101, alternately changing the pressure points of the patient, avoiding the occurrence of bedsores due to long-term pressure on one part.

[0022] Principle of massage: Use the cylindrical massage rollers 101 to simulate the human hand to massage the patient. The structure of the massage rollers 101 is as Figure 2As shown in the figure, the surface has two surfaces, namely the cut plane 108 and the arc surface 102. A fixed shaft passes through the center. A bed board is formed by laying a number of massage rollers 101 flat. There is a small gap between adjacent massage rollers 101. The patient lies on the bed board formed by laying the massage rollers 101 flat. The arc surface 102 of the massage roller 101 contacts the human body, and the cut plane 108 is not in contact. When all the massage rollers 101 rotate forward and backward, the human body also moves back and forth accordingly, and the contact points between the human body and the arc surface 102 also change back and forth, avoiding long-term contact pressure on a certain part of the human body and playing the role of simulating manual massage. During massage, the rotation angle of the massage roller 101 forward and backward is 180°, ensuring that the human body only contacts the arc surface of the arc surface 102 and does not contact the cut plane 108, and the gap between adjacent massage rollers 101 is 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, which not only avoids long-term contact pressure on a certain part of the human body with the support surface resulting in poor blood circulation, but also can simulate manual massage on the contact pressure surface, achieving the elimination of bedsore lesions and preventing patients from suffering from bedsores.

[0023] The side-turning mechanism is located below the massage roller 101 and is mainly composed of a left side-turning bar 301, a right side-turning bar 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, a side-turning support rod 501, etc., as Figure 3 、 Figure 4 shown. When not turning over, the long sides of the L-shaped bars in the left side-turning bar 301 and the right side-turning bar 302 are horizontal and the short sides face down; the left side-turning shaft 303 and the right side-turning shaft 304 are respectively installed on the left and right sides of the bed frame 5. The left side-turning bar 301 can rotate around the left side-turning shaft 303, and the right side-turning bar 302 can rotate around the right side-turning shaft 304. The left side-turning electric push rod 306 and the right side-turning electric push rod 305 are installed on the side-turning support rod 501. The telescopic end of the left side-turning electric push rod 306 is connected to the fixed rod of the left side-turning bar 301, and the telescopic end of the right side-turning electric push rod 305 is connected to the other fixed rod of the right side-turning bar 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 side-turning electric push rod 306 and the right side-turning electric push rod 305 are in the retracted state. At this time, the left side-turning bar 301 and the right side-turning bar 302 are in a horizontal state, and they are directly below the massage roller 101. The patient lies on the massage roller 101 and does not contact the left side-turning bar 301 and the right side-turning bar 302. When side-turning is required, the drive motor 107 drives the transmission rack 104 to move through the motor gear, and the transmission rack 104 drives the transmission gear 103 to rotate the massage roller 101. When the travel contact point on the transmission rack 104 contacts the fixed contact point on the bed frame 5 (the indicator light is on), the massage roller 101 just rotates to the vertical position of the cut plane 108, asFigure 2 As shown, at this time, the gap C between adjacent massage rollers 101 is the largest, and the driving motor 107 stops rotating. The gap C between adjacent massage rollers 101 allows the L-shaped rods (6 - 10 pieces, with 3 fewer L-shaped rods at the front end of the bed frame 5 to avoid affecting the lifting of the sitting-up electric push rod 202) on the left turning bar 301 or the right turning bar 302 to pass through the gap C. Only one bar passes through each gap C, and the left turning bar 301 and the right turning bar 302 are staggered. When right turning is needed (with reference to the patient's lying position), the right turning electric push rod 305 extends, and the left turning electric push rod 306 contracts. The right turning electric push rod 305 pushes the right turning bar 302 upwards, and the right turning bar 302 rotates around the right turning shaft 304, helping the patient to turn to the right. After the right turning is completed, the right turning electric push rod 305 contracts and returns to the horizontal state. When left turning is needed, the left turning electric push rod 306 extends, and the right turning electric push rod 305 contracts. The left turning electric push rod 306 pushes the left turning bar 301 upwards, and the left turning bar 301 rotates around the left turning shaft 303, helping the patient to turn to the left. After the left turning is completed, the left turning electric push rod 306 contracts and returns to the horizontal state.

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

[0026] The sitting-up mechanism is for the convenience of patients to sit up for taking medicine, eating, communicating with others, etc., as Figure 5 shown. The sitting-up mechanism consists of a front plate 201 and the massage rollers 101 thereon, a sitting-up electric push rod 202 installed on the bed frame 5, etc. The sitting-up electric push rod 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 push rod 202 contracts, the front plate 201 lies flat on the bed frame 5 and is in the same plane as the rear plate 206, as Figure 1 shown. At this time, the hospital bed is in a flat lying state; when the sitting-up electric push rod 202 extends, it pushes the front plate 201 and the massage rollers 101 thereon to swing upwards. The transmission gear 103 on the massage roller 101 on the front plate 201 separates from the transmission rack 104. At this time, the hospital bed is in a sitting-up state, as Figure 5 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 stroke contact 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 just in the vertical position. At this time, a signal is generated to the controller, and the controller reacts to reverse the drive motor 107. At this time, the transmission rack 104 changes to move 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 touches the front stroke contact on the transmission rack 104, and the cut-out plane 108 of the massage roller 101 is also just in the vertical position; at this time, a signal is also generated to the controller, and the controller reacts to make the drive motor 107 resume clockwise rotation, and the transmission rack 104 moves forward. Repeating like this, the transmission rack 104 is restricted to reciprocate between the front and rear stroke contacts, and the rotation angle of the massage roller 101 is about 180°. This is the massage process. The front and rear stroke contacts installed on the transmission rack 104 and the fixed contact points on the bed frame 5 are used for both side turning control and massage stroke control.

[0028] When side turning is needed, the massage function changes to the side turning function. When the cut-out plane 108 on the massage roller 101 is in the vertical position, the drive motor 107 stops rotating, and the gap C between two adjacent massage rollers 101 is the largest. Next, starting the left side turning electric push rod 306 or the right side turning electric push rod 305 can complete the corresponding side turning action.

[0029] Siemens S7-200 is used as the PLC controller to control the massage function, side turning function and sitting-up function of the anti-bedsore bed through a program. The control includes automatic control and manual control. The automatic massage function and automatic side turning function of the anti-bedsore bed are automatically controlled through the program. After automatically massaging for a certain period of time (for example, 1 - 2 hours), it changes from the massage function to the left side turning function. After turning left for a certain period of time (for example, 5 - 10 minutes), it changes to the automatic massage function. After a certain period of time (for example, 1 - 2 hours), it changes from the massage function to the right side turning function. After turning right for a certain period of time (for example, 5 - 10 minutes), it changes back to the automatic massage function again, and so on in a cycle. When the patient needs to sit up, by pressing a manual button, the anti-bedsore bed changes from the massage function or side turning function to the sitting-up function. After the sitting-up function is completed, pressing the manual button again, the anti-bedsore bed resumes to the original massage function or side turning function.

Claims

1. A massage mechanism and a side turning mechanism for a bedsore prevention hospital bed, characterized in that: Comprising 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). At the front end of the rear plate (206), a front plate (201) is respectively hinged. 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) thereon 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, 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 the massage rollers (101) on the bed frame (5) face the same direction. Two travel contacts are arranged on the transmission rack (104) in the front and rear directions. A fixed contact point is arranged on the bed frame (5). The transmission rack (104) reciprocates between the two travel contacts in the front and rear directions. When the travel contact on the transmission rack (104) touches the fixed contact point on the bed frame (5), the PLC controller obtains a closed signal. The PLC controller then controls the drive motor (107) to change the rotation direction, so that the massage roller (101) rotates forward and backward within 180°, and 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) in the front and rear directions contact the fixed contact point 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), which are located below the massage roller (101). The left side turning bar (301) includes a number of evenly distributed L-shaped bars. The long side of the L-shaped bar is horizontal and the short side faces 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 bar. The fixed bar 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). The side turning support rod (501) is fixed to the bottom of the bed frame (5). The right side turning bar (302) includes a number of evenly distributed L-shaped bars. The long sides of the L-shaped bars are horizontal, and the short sides face downward. The ends of the long sides are connected to the right side turning shaft (304) on the right side of the bed frame (5). Both ends of the right side turning shaft (304) are hinged to the bed frame (5). The ends of the short sides are connected to another fixed bar, and the fixed bar 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 bars of the right side turning bar (302) and the L-shaped bars of the left side turning bar (301) are arranged in a staggered manner. When the cut plane (108) of the massage roller (101) is in the vertical position, the distance C between two adjacent massage rollers (101) is the largest. The L-shaped bars on the left side turning bar (301) or the right side turning bar (302) can swing within the distance C between the corresponding massage rollers (101) under the action of the corresponding electric push rods. The right side turning electric push rod (305) and the left side turning electric push rod (306) are controlled by a PLC controller or manually.

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