Electric sickbed based on head inclination angle alarm of critical patient

Abstract

The invention belongs to the field of medical sickbeds, and provides an electric sickbed based on critical patient head inclination angle alarming, the electric sickbed comprises a bed body, a fixed box is fixedly mounted at the bottom of the bed body, a swing rod is rotatably connected in the fixed box, and the rotation direction of the swing rod is perpendicular to the length direction of the bed body; a lifting rod assembly is vertically and slidably mounted at the top of the swing rod, a second rotating seat is mounted at one end of the lifting rod assembly, and a sliding block is mounted on the second rotating seat. A plurality of flexible film pressure sensors are arranged on the pillow, head pressure distribution of a patient can be detected, the head position and the inclination angle of the patient can be judged through processing of the data processing module, a threshold value is set in the controller in advance, and when the head inclination angle of the patient is too large, the patient can be reminded to take out the patient. The controller can control the alarm to give an alarm to remind medical staff to timely return to right the head of the patient, so that secondary injury to the head of the patient is avoided.

Description

Technical Field

[0001] The invention belongs to the field of medical beds, and in particular relates to an electric bed with an alarm based on the tilt angle of the head of a critically ill patient. Background Art

[0002] The critically ill patient bed is the nursing bed used in the intensive care unit, that is, the ICU bed. Critical care is a medical organization management form that integrates modern medical care technology and has emerged with the development of medical care, the birth of new medical equipment and the improvement of hospital management system. The ICU bed is an essential medical equipment in the ICU ward center.

[0003] Some patients who have undergone head or neck surgery usually need to be observed and recovered on the ICU bed for a period of time before being transferred to the general ward. Right after the operation, the patient's head and neck cannot be moved at will, which can easily cause secondary injuries. In order to prevent the patient from turning his head at will, medical staff usually put on a head or neck protection brace for the patient. In order to prevent the patient from feeling uncomfortable, a gap is usually left between the patient's head and the protection brace so that the patient can move the head slightly. When the patient is lying on the bed, in order to prevent the patient from being scratched by the protection brace, the patient is usually replaced with a soft protection brace, or no protection brace is worn. The medical staff then monitors the patient in real time to prevent the patient from excessively deflecting the head.

[0004] However, when medical staff are distracted or are out, they cannot supervise the patients. During this period, when the patient's head tilts, they cannot straighten the patient's head in time, which may cause injury to the patient's neck or head. Summary of the invention

[0005] The purpose of the present invention is to provide an electric hospital bed based on a head tilt angle alarm for critically ill patients, aiming to solve the technical problem in the prior art that manual care of patients may result in failure to monitor the patient's head in a timely manner.

[0006] The present invention is implemented as follows: an electric hospital bed with an alarm based on the tilt angle of the head of a critically ill patient comprises a bed body, a fixed box is fixedly installed at the bottom of the bed body, a swing rod is rotatably connected inside the fixed box, the rotation direction of the swing rod is perpendicular to the length direction of the bed body, a lifting rod assembly is vertically slidably installed on the top of the swing rod, a second rotating seat is installed at one end of the lifting rod assembly, a slider is installed on the second rotating seat, a pillow is fixedly connected at one end of the slider, the pillow is located above the bed body, the cross-section of the pillow along the width direction of the bed body is an arc shape, the cross-section of the pillow along the length direction of the bed body is also an arc shape, and the end of the pillow away from the center of the bed body is higher than the end close to the center of the bed body, so that the side of the pillow The edge of the pillow can support the patient's neck, making the patient more comfortable. The pillow is provided with a plurality of flexible film pressure sensors, which are distributed over the entire upper surface of the pillow. The flexible film pressure sensors are used to detect the pressure distribution of the patient's head. The bed body is provided with a controller and an alarm. The controller is provided with a data processing module and a control module. The data detected by the plurality of flexible film pressure sensors are transmitted to the controller, and after being processed by the data processing module, the position and inclination of the patient's head can be determined. A threshold value is set in advance in the controller. When the inclination of the patient's head is too large, the controller controls the alarm to sound an alarm, and the medical staff returns in time to straighten the patient's head.

[0007] The bed body is also provided with a mattress, the mattress is provided with an activity hole for the slider to move, the surface of the mattress is also provided with an activity groove for the pillow to move, the width of the activity groove is equal to the width of the pillow, and the length of the activity groove is greater than the length of the pillow, so as to facilitate the adjustment of the horizontal position of the pillow;

[0008] An angle sensor is also fixedly mounted on the fixed box, one end of which is fixedly connected to the pivot of the swing arm. Initially, the angle between the length direction of the swing arm and the horizontal plane is 90°. The angle sensor is used to detect the angle between the length direction of the swing arm and the horizontal plane. When the angle is less than 90°, it indicates that the center of gravity of the patient's head deviates from the vertical direction of the swing arm, and the patient's head presses the swing arm to rotate. When the angle is too small, it indicates that the patient's head tilt angle is too large, and an alarm should be issued immediately to notify medical staff to straighten the patient's head.

[0009] When the patient's head is deflected, in order to prevent the swinging angle of the swinging rod driven by the head due to inertia from being too large, two adjustable side-pull mechanisms are installed inside the fixed box, which are respectively recorded as adjustable side-pull mechanism 1 and right adjustable side-pull mechanism 2. One end of the adjustable side-pull mechanism 1 and the right adjustable side-pull mechanism 2 are respectively connected to the two sides of the swinging rod, and the adjustable side-pull mechanism 1 and the right adjustable side-pull mechanism 2 are symmetrically distributed about the center line of the swinging rod. The adjustable side-pull mechanism is used to elastically support the two sides of the swinging rod, and can adjust the support strength of the swinging rod to adapt to patients of different weights and prevent the swinging rod from swinging randomly.

[0010] A height adjustment mechanism is also installed at the bottom of the swing rod, and the output end of the height adjustment mechanism is transmission-connected to one end of the lifting rod assembly. The height adjustment mechanism is used to drive the lifting rod assembly to move along the swing rod, and the lifting rod assembly drives the second rotating seat and the pillow to move, thereby adjusting the height of the pillow so that the bed can adapt to the usage needs of different patients.

[0011] Further technical solution: The adjustable side-pull mechanism 1 comprises a first rotating seat and a hinged head, the first rotating seat is hinged at the bottom of the fixed box, a first motor is fixedly installed on the side of the first rotating seat, an output shaft of the first motor is fixedly connected to a first screw, an adjustment block is threadedly connected to the first screw, and the adjustment block is slidably connected to the inside of the fixed box;

[0012] The hinged head is hinged on the side of the swing rod, one end of the hinged head is slidably connected with an extension rod, the extension rod abuts against the side of the adjustment block, a first compression spring is connected between the extension rod and the hinged head, and a through hole is provided inside the extension rod for the first screw rod to pass through;

[0013] The structure of the right adjustable side-pull mechanism 2 is the same as that of the right adjustable side-pull mechanism 1.

[0014] Further technical solution: The adjustable side-pull mechanism also includes a first pressure sensor, which is arranged between the adjustment block and the extension rod. The first pressure sensor is used to detect the pressure of the first compression spring on the extension rod, that is, the elastic force of the first compression spring.

[0015] Further technical solution: The height adjustment mechanism includes a second motor fixedly installed at one end of the bottom of the swing rod, the output shaft of the second motor is fixedly connected to a second screw rod, and one end of the second screw rod is threadedly connected to one end of the lifting rod assembly.

[0016] Further technical solution: an angle adjustment mechanism and a position adjustment mechanism are also provided, the second rotating seat is rotatably mounted on one end of the lifting rod assembly, and the sliding block is slidably mounted on the second rotating seat;

[0017] The angle adjustment mechanism is installed on the lifting rod assembly, and the output end of the angle adjustment mechanism is transmission-connected with the second rotating seat. The angle adjustment mechanism is used to drive the second rotating seat to rotate, thereby adjusting the angle of the second rotating seat. When the patient's head deflection angle is too large, the angle adjustment mechanism can be controlled to drive the second rotating seat to rotate in the opposite direction to deflect the patient's head back;

[0018] The position adjustment mechanism is installed on the second rotating seat, and the output end of the position adjustment mechanism is transmission-connected to the slider. The position adjustment mechanism is used to drive the slider to move, thereby adjusting the position of the patient's head. When the patient's head is offset at an inclination angle that is too large, the position adjustment mechanism can be controlled to drive the slider to move in the opposite direction, thereby straightening the patient's head and avoiding damage to the patient's neck.

[0019] Further technical solution: The angle adjustment mechanism includes a third motor fixedly mounted on the side of one end of the lifting rod assembly, the output shaft of the third motor is fixedly connected to a worm, the pivot of the second rotating seat is fixedly connected to a worm wheel, and the worm wheel and the worm are meshingly connected.

[0020] Further technical solution: the position adjustment mechanism includes a fourth motor fixedly mounted on one side of the second rotating seat, the output shaft of the fourth motor is fixedly connected to a third screw rod, and the third screw rod is threadedly connected to the slider.

[0021] Further technical solution: the lifting rod assembly can be set to be retractable. Specifically, the lifting rod assembly includes an adjusting rod, which is slidably connected to one end of the swing rod, and one end of the second screw rod is threadedly connected to the adjusting rod. An installation groove is provided at one end of the adjusting rod, and a movable head is slidably connected inside the installation groove. The second rotating seat is rotatably connected to the movable head, and a second compression spring is connected between the movable head and the adjusting rod.

[0022] Further technical solution: The lifting rod assembly also includes a telescopic rod, which is installed inside the movable head. The movable end of the telescopic rod is fixedly connected to a limiting block, one end of the limiting block is located inside the mounting groove, and a second pressure sensor is provided on the side of the limiting block close to the bottom of the mounting groove.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention can detect the pressure distribution of the patient's head by arranging a plurality of flexible film pressure sensors on the pillow, and can judge the position and inclination of the patient's head after being processed by the data processing module, and set a threshold in advance in the controller. When the inclination of the patient's head is too large, the controller can control the alarm to sound an alarm, reminding the medical staff to come back in time to straighten the patient's head, so as to avoid secondary injury to the patient's head;

[0025] 2. The present invention, by providing a swingable swing rod and an angle sensor for detecting the angle of the swing rod, the angle sensor can assist a plurality of flexible film pressure sensors to determine the patient's head position, thereby improving the alarm accuracy;

[0026] 3. The present invention can prevent the swing rod from swinging randomly and its swing angle from being too large by providing an adjustable side-pull mechanism. At the same time, the support strength of the swing rod can be adjusted to adapt to patients of different weights, making the device more convenient to use.

[0027] 4. The present invention provides an angle adjustment mechanism and a position adjustment mechanism. When the patient's head is deflected at an angle that is too large, the angle adjustment mechanism can be controlled to drive the second rotating seat to rotate in the opposite direction to deflect the patient's head back. When the patient's head is deflected at an angle that is too large, the position adjustment mechanism can be controlled to drive the slider to move in the opposite direction, thereby straightening the patient's head to avoid damage to the patient's neck. This solves the problem that the medical staff is not with the patient and fails to adjust the patient's head position in time, resulting in further damage to the patient's neck.

[0028] 5. The present invention sets the lifting rod assembly to be retractable. When the bottom of the pillow contacts the bottom of the movable groove, one end of the second rotating seat will abut against the bottom of the movable groove, and the other end of the second rotating seat will tilt up, so that the movement of the second rotating seat is not hindered.

[0029] 6. The present invention, by setting a telescopic rod and a limit block, after adjusting the height of the pillow, the telescopic rod drives the limit block to extend, so that the limit block contacts the bottom of the installation groove, and the position between the movable head and the adjusting rod can be limited, thereby preventing the patient's head from moving downward again due to the pillow leaving movable space, thereby protecting the patient's neck. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0031] Figure 2 It is a schematic diagram of the overall partial cross-section structure of the present invention when viewed from above.

[0032] Figure 3 It is a schematic diagram of the partial structure of the overall top view of the present invention.

[0033] Figure 4 It is a schematic diagram of the structure inside the fixed box of the present invention.

[0034] Figure 5 It is a structural schematic diagram of the cross section of the lifting rod assembly in the present invention.

[0035] Figure 6 It is a schematic diagram of the cross-sectional structure of the adjustable side-pull mechanism 1 in the present invention.

[0036] Figure 7 It is a schematic diagram of the alarm and control flow in the present invention.

[0037] In the accompanying drawings: 1. bed body; 2. mattress; 3. pillow; 4. fixed box; 5. movable slot; 6. movable hole; 7. adjustable side-pull mechanism 1; 71. first rotating seat; 72. first motor; 73. adjustment block; 74. first screw; 75. extension rod; 76. through hole; 77. first compression spring; 78. hinge head; 8. lifting rod assembly; 81. movable head; 82. telescopic rod; 83. second compression spring; 84. mounting slot; 85. limit block; 86. adjustment rod; 9. swing rod; 10. height adjustment mechanism; 101. second screw; 102. second motor; 11. angle adjustment mechanism; 111. worm gear; 112. worm; 113. third motor; 12. second rotating seat; 13. slider; 14. angle sensor; 15. right adjustable side-pull mechanism 2; 16. position adjustment mechanism; 161. third screw; 162. fourth motor. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0040] like Figure 1-Figure 7As shown, an electric hospital bed based on a head tilt angle alarm for critically ill patients provided by the present invention comprises a bed body 1, wherein the bed body 1 comprises a frame, four legs, a plurality of reinforcement columns and a headboard, wherein the four legs are fixedly connected to the bottom of the four corners of the frame, a plurality of reinforcement columns are equidistantly fixed inside the frame, the headboard is fixedly connected to one end of the top of the frame, a fixing box 4 is fixedly installed at the bottom of the reinforcement column, openings adapted to the fixing box 4 are opened between the plurality of reinforcement columns, the openings are connected to the fixing box 4, a swing rod 9 is rotatably connected to the inside of the fixing box 4, the rotation direction of the swing rod 9 is perpendicular to the length direction of the bed body 1, a lifting rod assembly 8 is vertically slidably installed on the top of the swing rod 9, a second rotating seat 12 is installed at one end of the lifting rod assembly 8, a slider 13 is installed on the second rotating seat 12, a pillow 3 is fixedly connected to one end of the slider 13, the pillow 3 is located above the bed body 1, The cross section of the pillow 3 along the width direction of the bed body 1 is an arc shape, and the cross section of the pillow 3 along the length direction of the bed body 1 is also an arc shape, and the end of the pillow 3 away from the center of the bed body 1 is higher than the end close to the center of the bed body 1, so that the edge of the pillow 3 can support the patient's neck, making the patient more comfortable, and a plurality of flexible film pressure sensors are arranged on the pillow 3, and the plurality of flexible film pressure sensors are distributed over the entire upper surface of the pillow 3, and the flexible film pressure sensors are used to detect the patient's head pressure distribution, and a controller and an alarm are arranged on the bed body 1, and a data processing module and a control module are arranged in the controller, and the data detected by the plurality of flexible film pressure sensors are transmitted to the controller, and after being processed by the data processing module, the patient's head position and inclination angle can be judged, and a threshold value is set in the controller in advance, and when the patient's head inclination angle is too large, the controller controls the alarm to alarm;

[0041] The bed body 1 is also provided with a mattress 2, and a movable hole 6 for the slider 13 to move is provided on the mattress 2, and a movable groove 5 for the pillow 3 to move is provided on the surface of the mattress 2, and the width of the movable groove 5 is equal to the width of the pillow 3, and the length of the movable groove 5 is greater than the length of the pillow 3, so as to facilitate the adjustment of the horizontal position of the pillow 3, and to adjust the position of the patient's head when the inclination angle of the patient's head is too large;

[0042] An angle sensor 14 is also fixedly mounted on the fixed box 4, one end of which is fixedly connected to the pivot of the swing rod 9. Initially, the angle between the length direction of the swing rod 9 and the horizontal plane is 90°. The angle sensor 14 is used to detect the angle between the length direction of the swing rod 9 and the horizontal plane. When the angle is less than 90°, it indicates that the center of gravity of the patient's head deviates from the vertical direction of the swing rod 9, and the patient's head presses the swing rod 9 to rotate. When the angle is too small, it indicates that the patient's head tilt angle is too large, and an alarm should be immediately issued to notify medical staff to straighten the patient's head.

[0043] When the patient's head is deflected, in order to prevent the swing rod 9 from swinging too much due to the inertia of the head, two adjustable side-pull mechanisms are installed inside the fixed box 4, which are respectively denoted as adjustable side-pull mechanism 1 7 and right adjustable side-pull mechanism 2 15. One end of the adjustable side-pull mechanism 1 7 and the right adjustable side-pull mechanism 2 15 are respectively connected to the two sides of the swing rod 9, and the adjustable side-pull mechanism 1 7 and the right adjustable side-pull mechanism 2 15 are symmetrically distributed about the center line of the swing rod 9. The adjustable side-pull mechanism is used to elastically support the two sides of the swing rod 9, and can adjust the support strength of the swing rod 9 to adapt to patients of different weights and prevent the swing rod 9 from swinging randomly.

[0044] A height adjustment mechanism 10 is also installed at the bottom of the swing rod 9, and the output end of the height adjustment mechanism 10 is transmission-connected to one end of the lifting rod assembly 8. The height adjustment mechanism 10 is used to drive the lifting rod assembly 8 to move along the swing rod 9, and the lifting rod assembly 8 drives the second rotating seat 12 and the pillow 3 to move, thereby adjusting the height of the pillow 3 so that the bed can adapt to the usage needs of different patients.

[0045] like Figure 2 , Figure 4 and Figure 6 As shown, an electric hospital bed based on the head tilt angle alarm for critically ill patients provided by the present invention, in this embodiment, the adjustable side-pull mechanism 7 includes a first rotating seat 71 and a hinge head 78, the first rotating seat 71 is hinged to the bottom of the fixed box 4, a first motor 72 is fixedly installed on the side of the first rotating seat 71, the output shaft of the first motor 72 is fixedly connected to a first screw 74, the first screw 74 is threadedly connected to an adjustment block 73, and the adjustment block 73 is slidably connected to the inside of the fixed box 4;

[0046] The hinged joint 78 is hinged on the side of the swing rod 9, one end of the hinged joint 78 is slidably connected to an extension rod 75, the extension rod 75 abuts against the side of the adjustment block 73, a first compression spring 77 is connected between the extension rod 75 and the hinged joint 78, and a through hole 76 is provided inside the extension rod 75 for the first screw rod 74 to pass through;

[0047] The structure of the right adjustable side-pull mechanism 2 15 is the same as that of the adjustable side-pull mechanism 1 7 .

[0048] When in use, the two first compression springs 77 push the hinge joint 78 to support the two sides of the swing rod 9. When the center of gravity of the patient's head is located on the vertical extension line of the swing rod 9, the two first compression springs 77 are subjected to balanced force, so that the swing rod 9 can be kept in a vertical state. When the patient's head is offset, the center of gravity of the patient's head is located outside the vertical extension line of the swing rod 9, which breaks the balance of the swing rod 9 and causes the swing rod 9 to deflect to one side. Under the action of the first compression spring 77, the swing rod 9 will not deflect excessively, and it will only deflect according to the position of the center of gravity of the patient's head.

[0049] Patients with different weights will have different head weights. If the initial elasticity of the first compression spring 77 is too small, its supporting force on the swing arm 9 will be weakened, which will also cause the swing arm 9 to deflect excessively. At this time, the first motor 72 can be started, and the first motor 72 drives the first screw rod 74 to rotate, and the first screw rod 74 drives the adjusting block 73 to move, and the adjusting block 73 drives the extension rod 75 to move, so that the distance between the extension rod 75 and the hinge head 78 can be adjusted, and the length of the first compression spring 77 can be adjusted. Since the elastic coefficient of the first compression spring 77 remains unchanged, the initial elastic force of the first compression spring 77 can be adjusted. For patients with heavier head weight, the length of the first compression spring 77 is shortened to increase its initial elastic force. Otherwise, the initial elastic force is reduced so that the inclination angle of the patient's head can be accurately monitored.

[0050] The present invention provides an electric bed based on the head tilt angle alarm for critically ill patients. In order to better control the supporting force of the first compression spring 77 on the swing rod 9, in this embodiment, the adjustable side pulling mechanism 7 also includes a first pressure sensor, which is arranged between the adjustment block 73 and the extension rod 75. The first pressure sensor is used to detect the pressure of the first compression spring 77 on the extension rod 75, that is, the elastic force of the first compression spring 77.

[0051] The two first pressure sensors are used to monitor the elastic force of the two first compression springs 77 in real time. When the elastic force of the two first compression springs 77 is the same, it indicates that the swing rod 9 is in a balanced state. When there is a numerical difference between the elastic force of the two first compression springs 77, it indicates that the patient's head is offset. When the elastic force values ​​of the two first compression springs 77 differ greatly, it indicates that the patient's head inclination angle is too large. At this time, an alarm can be issued.

[0052] like Figure 2 , Figure 4-Figure 5As shown, an electric bed based on the head tilt angle alarm for critically ill patients is provided by the present invention. In this embodiment, the height adjustment mechanism 10 includes a second motor 102 fixedly installed at one end of the bottom of the swing rod 9, and the output shaft of the second motor 102 is fixedly connected to the second screw 101, and one end of the second screw 101 is threadedly connected to one end of the lifting rod assembly 8.

[0053] like Figure 2 , Figure 4-Figure 5 As shown, an electric hospital bed based on the alarm of the head tilt angle of a critically ill patient provided by the present invention, when the tilt angle of the patient's head is too large and the medical staff is not beside the patient, the patient's head position needs to be adjusted in time, otherwise the patient's neck will be further damaged. In this embodiment, an angle adjustment mechanism 11 and a position adjustment mechanism 16 are also provided, the second rotating seat 12 is rotatably mounted on one end of the lifting rod assembly 8, and the slider 13 is slidably mounted on the second rotating seat 12;

[0054] The angle adjustment mechanism 11 is installed on the lifting rod assembly 8, and the output end of the angle adjustment mechanism 11 is connected to the second rotating seat 12 in a transmission manner. The angle adjustment mechanism 11 is used to drive the second rotating seat 12 to rotate, thereby adjusting the angle of the second rotating seat 12. When the patient's head deflection angle is too large, the angle adjustment mechanism 11 can be controlled to drive the second rotating seat 12 to rotate in the opposite direction to deflect the patient's head back;

[0055] The position adjustment mechanism 16 is installed on the second rotating seat 12, and the output end of the position adjustment mechanism 16 is transmission-connected with the slider 13. The position adjustment mechanism 16 is used to drive the slider 13 to move, thereby adjusting the position of the patient's head. When the patient's head is deviated at an inclination angle that is too large, the position adjustment mechanism 16 can be controlled to drive the slider 13 to move in the opposite direction, thereby straightening the patient's head to avoid damage to the patient's neck.

[0056] like Figure 2 , Figure 4-Figure 5 As shown, an electric hospital bed based on the head tilt angle alarm for critically ill patients is provided by the present invention. In this embodiment, the angle adjustment mechanism 11 includes a third motor 113 fixedly mounted on the side of one end of the lifting rod assembly 8, and the output shaft of the third motor 113 is fixedly connected to a worm 112, and a worm wheel 111 is fixedly connected to the pivot of the second rotating seat 12, and the worm wheel 111 and the worm 112 are meshingly connected.

[0057] like Figure 2 , Figure 4-Figure 5As shown, an electric hospital bed based on the head tilt angle alarm for critically ill patients is provided by the present invention. In this embodiment, the position adjustment mechanism 16 includes a fourth motor 162 fixedly mounted on one side of the second rotating seat 12, and the output shaft of the fourth motor 162 is fixedly connected to the third screw 161, and the third screw 161 is threadedly connected to the slider 13.

[0058] like Figure 2 , Figure 4-Figure 5 As shown, an electric hospital bed based on the head tilt angle alarm for critically ill patients provided by the present invention, when the angle of the second rotating seat 12 is adjusted, when the bottom of the pillow 3 and the bottom of the movable groove 5 are in contact, there is no movable space between the pillow 3 and the mattress 2, so that the rotation of the second rotating seat 12 will be hindered. Therefore, in this embodiment, the lifting rod assembly 8 can be set to be retractable. Specifically, the lifting rod assembly 8 includes an adjusting rod 86, and the adjusting rod 86 is slidably connected to one end of the swing rod 9, and one end of the second screw rod 101 is threadedly connected to the adjusting rod 86, one end of the adjusting rod 86 is provided with a mounting groove 84, and the interior of the mounting groove 84 is slidably connected with a movable head 81, the second rotating seat 12 is rotatably connected to the movable head 81, and a second compression spring 83 is connected between the movable head 81 and the adjusting rod 86.

[0059] When the angle adjustment mechanism 11 drives the second rotating seat 12 to rotate, one end of the second rotating seat 12 will abut against the bottom of the movable groove 5, and the other end of the second rotating seat 12 will tilt up, so that the movement of the second rotating seat 12 can be unimpeded.

[0060] like Figure 2 , Figure 4-Figure 5 As shown, an electric hospital bed based on the head tilt angle alarm for critically ill patients provided by the present invention, when the height adjustment mechanism 10 drives the lifting rod assembly 8 to rise, the bottom of the pillow 3 and the bottom of the movable groove 5 are separated, at this time, the pillow 3 and the second rotating seat 12 are in a freely movable state, when the patient's head is resting on the pillow 3, the pillow 3 and the second rotating seat 12 will press the movable head 81 downward, and the movable head 81 presses the second compression spring 83 to make the pillow 3 drop, so that the height adjustment of the pillow 3 is inaccurate, and the flexible second compression spring 83 will also make the patient's head in a movable state, which is easy to cause secondary injury to the patient's neck. Therefore, in this embodiment, the lifting rod assembly 8 also includes a telescopic rod 82, which is installed inside the movable head 81, and the movable end of the telescopic rod 82 is fixedly connected to the limiting block 85, one end of the limiting block 85 is located inside the mounting groove 84, and the side of the limiting block 85 close to the bottom of the mounting groove 84 is provided with a second pressure sensor.

[0061] When adjusting the height of the pillow 3, first the telescopic rod 82 drives the limit block 85 to shorten, and then the height of the pillow 3 is adjusted. After the adjustment is completed, the telescopic rod 82 drives the limit block 85 to extend. When the second pressure sensor on the limit block 85 detects pressure, it indicates that the limit block 85 is in contact with the bottom of the installation groove 84, and the position between the movable head 81 and the adjusting rod 86 can be limited to prevent the pillow 3 from moving downward, thereby preventing the patient's head from moving downward again, thereby protecting the patient's neck.

[0062] How it works

[0063] First, the height of the pillow 3 is adjusted as needed, and the second motor 102 drives the lifting rod assembly 8 to rise and fall through the second screw 101. Then, the patient lies on the mattress 2 and puts the patient's head on the pillow 3. At this time, the center of gravity of the patient's head is located at the center of the pillow 3, so that the swing rod 9 is balanced in force.

[0064] When the patient's head is deflected, the patient's head rotates around the back of the head, and the center of gravity of the head deviates from the center of the pillow 3. At this time, several flexible film pressure sensors on the pillow 3 detect the pressure distribution and pressure size of the patient's head, and process the data through the data processing module. Since the patient's head only rotates around the back of the head, the contact position and contact pressure between the back of the head and the pillow 3 change, so that the data processing module can determine the inclination angle of the patient's head. When the inclination angle is too large, the controller controls the alarm to sound an alarm. At the same time, the third motor 113 drives the worm gear 111 to rotate through the worm 112, and the worm gear 111 drives the second rotating seat 12 and the pillow 3 to rotate in the opposite direction, so that the patient's head can be deflected back in time to avoid it from causing damage to the patient's neck.

[0065] When the patient's head is offset, the patient moves the head position, that is, the patient's head and body are not in a straight line. At this time, several flexible film pressure sensors on the pillow 3 detect the pressure distribution and pressure size of the patient's head, and can determine the position of the patient's head on the pillow 3. When the angle between the patient's head and the patient's body is too large, the controller controls the alarm to sound an alarm. At the same time, the fourth motor 162 drives the slider 13 and the pillow 3 to move in the opposite direction through the third screw 161, so that the patient's head is straightened to avoid continuous damage to the patient's neck.

[0066] Whether the patient's head is deflected or offset, it will cause uneven force on the swing arm 9, causing the swing arm 9 to deflect to one side. At the same time, the angle sensor 14 can detect the deflection angle of the swing arm 9, and the two first pressure sensors on the adjustable side-pull mechanism 1 7 and the right adjustable side-pull mechanism 2 15 can also detect the pressure of the swing arm 9 on the adjustable side-pull mechanism 1 7 or the right adjustable side-pull mechanism 2 15. The greater the difference in values ​​of the first pressure sensors on the adjustable side-pull mechanism 1 7 and the right adjustable side-pull mechanism 2 15, the greater the angle of deflection or offset of the patient's head, which can assist the data processing module in judging the position and angle of the patient's head, making the judgment more accurate.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0068] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An electric hospital bed with an alarm based on the head tilt angle of a critically ill patient, comprising a bed body (1), characterized in that: A fixed box (4) is fixedly installed at the bottom of the bed body (1), and a swing rod (9) is rotatably connected inside the fixed box (4). The rotation direction of the swing rod (9) is perpendicular to the length direction of the bed body (1). A lifting rod assembly (8) is vertically slidably installed on the top of the swing rod (9). A second rotating seat (12) is installed at one end of the lifting rod assembly (8). A slider (13) is installed on the second rotating seat (12). A pillow (3) is fixedly connected to one end of the slider (13). The pillow (3) is located above the bed body (1). A plurality of flexible film pressure sensors are arranged on the pillow (3). The plurality of flexible film pressure sensors cover the entire upper surface of the pillow (3). A controller and an alarm are arranged on the bed body (1), and a data processing module and a control module are arranged in the controller. The bed body (1) is also provided with a mattress (2), the mattress (2) is provided with a movable hole (6) for the slider (13) to move, and the surface of the mattress (2) is also provided with a movable groove (5) for the pillow (3) to move; An angle sensor (14) is also fixedly mounted on the fixed box (4), one end of the angle sensor (14) is fixedly connected to the pivot of the swing rod (9), and initially, the angle between the length direction of the swing rod (9) and the horizontal plane is 90°; Two adjustable side-pull mechanisms are installed inside the fixed box (4), which are respectively denoted as adjustable side-pull mechanism one (7) and right adjustable side-pull mechanism two (15). One end of the adjustable side-pull mechanism one (7) and the right adjustable side-pull mechanism two (15) are respectively connected to the two sides of the swing rod (9), and the adjustable side-pull mechanism one (7) and the right adjustable side-pull mechanism two (15) are symmetrically distributed about the center line of the swing rod (9). The adjustable side-pull mechanism is used to elastically support the two sides of the swing rod (9), and the support strength of the swing rod (9) can be adjusted; A height adjustment mechanism (10) is also installed at the bottom of the swing rod (9), and the output end of the height adjustment mechanism (10) is transmission-connected to one end of the lifting rod assembly (8). The height adjustment mechanism (10) is used to drive the lifting rod assembly (8) to move along the swing rod (9).

2. The electric hospital bed based on the head tilt angle alarm for critically ill patients according to claim 1 is characterized in that: The adjustable side-pull mechanism (7) comprises a first rotating seat (71) and a hinged head (78), wherein the first rotating seat (71) is hinged to the bottom of the fixed box (4), a first motor (72) is fixedly mounted on the side of the first rotating seat (71), an output shaft of the first motor (72) is fixedly connected to a first screw rod (74), an adjusting block (73) is threadedly connected to the first screw rod (74), and the adjusting block (73) is slidably connected to the inside of the fixed box (4); The hinge joint (78) is hinged on the side of the swing rod (9), one end of the hinge joint (78) is slidably connected to an extension rod (75), the extension rod (75) abuts against the side of the adjustment block (73), a first compression spring (77) is connected between the extension rod (75) and the hinge joint (78), and a through hole (76) for the first screw rod (74) to pass through is opened inside the extension rod (75); The structure of the right adjustable side-pull mechanism 2 (15) is the same as the structure of the adjustable side-pull mechanism 1 (7).

3. The electric hospital bed based on the head tilt angle alarm for critically ill patients according to claim 2 is characterized in that: The adjustable side-pull mechanism (7) further comprises a first pressure sensor, wherein the first pressure sensor is arranged between the adjustment block (73) and the extension rod (75).

4. The electric hospital bed based on the head tilt angle alarm for critically ill patients according to claim 1 is characterized in that: The height adjustment mechanism (10) comprises a second motor (102) fixedly mounted on one end of the bottom of the swing rod (9); an output shaft of the second motor (102) is fixedly connected to a second screw rod (101); one end of the second screw rod (101) is threadedly connected to one end of the lifting rod assembly (8).

5. The electric hospital bed based on the head tilt angle alarm for critically ill patients according to claim 1 is characterized in that: The bed body (1) is also provided with an angle adjustment mechanism (11) and a position adjustment mechanism (16); the second rotating seat (12) is rotatably mounted on one end of the lifting rod assembly (8); and the slider (13) is slidably mounted on the second rotating seat (12); The angle adjustment mechanism (11) is installed on the lifting rod assembly (8), the output end of the angle adjustment mechanism (11) is transmission-connected with the second rotating seat (12), and the angle adjustment mechanism (11) is used to drive the second rotating seat (12) to rotate; The position adjustment mechanism (16) is installed on the second rotating seat (12), the output end of the position adjustment mechanism (16) is transmission-connected with the slider (13), and the position adjustment mechanism (16) is used to drive the slider (13) to move.

6. The electric hospital bed based on the head tilt angle alarm for critically ill patients according to claim 5 is characterized in that: The angle adjustment mechanism (11) comprises a third motor (113) fixedly mounted on the side of one end of the lifting rod assembly (8); the output shaft of the third motor (113) is fixedly connected to a worm (112); the pivot of the second rotating seat (12) is fixedly connected to a worm wheel (111); the worm wheel (111) and the worm wheel (112) are meshingly connected.

7. The electric hospital bed based on the head tilt angle alarm for critically ill patients according to claim 5 is characterized in that: The position adjustment mechanism (16) comprises a fourth motor (162) fixedly mounted on one side of the second rotating seat (12); the output shaft of the fourth motor (162) is fixedly connected to a third screw rod (161); and the third screw rod (161) is threadedly connected to the slider (13).

8. The electric hospital bed based on the head tilt angle alarm for critically ill patients according to claim 4 is characterized in that: The lifting rod assembly (8) includes an adjusting rod (86), the adjusting rod (86) is slidably connected to one end of the swing rod (9), and one end of the second screw rod (101) is threadedly connected to the adjusting rod (86), one end of the adjusting rod (86) is provided with a mounting groove (84), the interior of the mounting groove (84) is slidably connected to a movable head (81), the second rotating seat (12) is rotatably connected to the movable head (81), and a second compression spring (83) is connected between the movable head (81) and the adjusting rod (86).

9. The electric hospital bed based on the head tilt angle alarm for critically ill patients according to claim 8, characterized in that: The lifting rod assembly (8) also includes a telescopic rod (82), the telescopic rod (82) being installed inside the movable head (81), the movable end of the telescopic rod (82) being fixedly connected to a limit block (85), one end of the limit block (85) being located inside the mounting groove (84), and a second pressure sensor being arranged on the side of the limit block (85) close to the bottom of the mounting groove (84).

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