Mattress and adjusting method thereof

Abstract

The invention relates to a mattress and an adjusting method thereof. The mattress comprises a mattress main body, a pressure sensor, a first position sensor, an execution part and a control device, the mattress main body comprises an elastic mattress surface and a liquid filling grid arranged below the elastic mattress surface; the liquid filling grids are filled with liquid, and the driving device drives the execution part to move in the liquid in the corresponding liquid filling grids; the elastic mattress surface is provided with a pressure sensor and a first position sensor, the pressure sensor is used for monitoring a pressure value on the elastic mattress surface, and the first position sensor is used for determining a liquid filling grid corresponding to a body part of a user in contact with the mattress according to the pressure value monitored by the pressure sensor; and the control device controls the driving device in the determined liquid filling grid to drive the corresponding execution part to move, so that the body part, in surface contact with the elastic cushion, of the user is changed. When the execution part moves, the elastic cushion surface is pushed to slightly protrude upwards, and the mattress can be locally adjusted according to some body parts to prevent bedsores.

Description

Technical Field

[0001] The invention relates to the technical field of medical rehabilitation nursing, in particular to a mattress and an adjustment method thereof. Background Art

[0002] With the advancement of modern medicine and nursing technology, how to effectively prevent common complications such as bedsores and thrombosis for bedridden patients or patients with limited mobility has become an important research topic in the medical field. Bedridden patients, especially those who have suffered a stroke, spinal cord injury, or are recovering from surgery, are prone to blood circulation disorders due to their long-term posture, which further leads to thrombosis. At the same time, due to the continuous effect of pressure, local blood flow to the skin is reduced, and symptoms of local tissue ischemia and hypoxia occur, leading to the occurrence of bedsores and local tissue necrosis. Therefore, timely and effective changes in the patient's position to prevent irreversible necrosis of local tissues have become an important part of clinical nursing.

[0003] Air mattresses are a type of mattress commonly used in clinical practice. They adjust the softness and hardness of the mattress by inflating and deflating, helping to disperse the pressure on the patient's body and prevent the occurrence of bedsores.

[0004] It has the following technical problems: There is a certain noise problem when inflating and deflating the air mattress, which affects the user's rest; the inflation and deflation adjustment action is large, and it can only adjust the overall softness and hardness of the air mattress. It is difficult to locally adjust the mattress for certain parts of the body to prevent bedsores, and the user experience is poor. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a mattress and an adjustment method thereof, which can locally adjust the mattress for certain body parts to prevent bedsores, with low noise during the adjustment process and good user experience.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: A mattress comprises a mattress body, a pressure sensor, a first position sensor, an actuator and a control device; The mattress body comprises an elastic cushion surface and a plurality of liquid-filled cells arranged below the elastic cushion surface; Each liquid-filled compartment is filled with liquid and is provided with an actuator, the diameter of which is slightly larger than the height of the mattress body; Each liquid-filled cell is provided with a driving device, which is connected to the actuator and is used to drive the actuator to move in the liquid in the corresponding liquid-filled cell; The elastic pad surface is provided with a plurality of pressure sensors and a plurality of first position sensors, and the plurality of pressure sensors, the plurality of first position sensors and the plurality of liquid-filled grids correspond to each other one by one; A plurality of pressure sensors are used to respectively monitor the pressure values ​​on the elastic pad surface to determine whether a part of the user's body is in contact with the mattress; The first position sensor is used to determine the liquid-filled cell corresponding to the user's body part that is in contact with the mattress according to the pressure value monitored by the pressure sensor; The control device is respectively connected to the driving device, the pressure sensor and the first position sensor, and is used to control the driving device in the determined liquid-filled cell to drive the corresponding actuator to move, so that the part of the user's body in contact with the elastic pad surface changes.

[0007] Furthermore, it also includes a timer, which is used to monitor the contact time of the maximum pressure among multiple pressure values ​​monitored by multiple pressure sensors; the first position sensor is used to locate the liquid-filled grid corresponding to the contact part of the maximum pressure; the control device is used to control the driving device in the liquid-filled grid corresponding to the contact part of the maximum pressure to drive the actuator in the liquid-filled grid to move when it is monitored that the contact time of the maximum pressure reaches a set value, so as to change the part of the body of the user that applies the maximum pressure on the elastic pad surface.

[0008] Furthermore, the liquid-filled grid is rectangular, and the driving device is a linear motor; the linear motor is fixed to the side wall of the liquid-filled grid and connected to the actuator, and is used to drive the actuator to move linearly in the liquid-filled grid.

[0009] Furthermore, the liquid-filled grid is circular, the driving device is a rotating motor, the rotating motor is arranged at the center of the liquid-filled grid, the rotating motor is connected to the actuator, and is used to drive the actuator to rotate in the liquid-filled grid. The rotating motor is provided with a telescopic arm, and the telescopic arm is connected to the actuator to adjust the rotation radius of the actuator.

[0010] Furthermore, the driving device is an adjustable magnetic field device, a plurality of adjustable magnetic field devices are provided on the inner wall of the liquid-filled grid, the actuator is made of a magnetically absorbable material, and the adjustable magnetic field device drives the actuator to move through the adjustable magnetic field.

[0011] Furthermore, the elastic pad surface corresponding to each liquid-filled grid is provided with a plurality of first position sensors, the actuator is equipped with a built-in second position sensor, and the control device is wirelessly connected to the second position sensor for controlling the movement of the corresponding actuator according to the position information monitored by any first position sensor in each liquid-filled grid until the position information monitored by the second position sensor is consistent with the position information monitored by the first position sensor.

[0012] Furthermore, the execution part is a sphere.

[0013] A mattress adjustment method comprises the following steps: A plurality of pressure sensors respectively monitor the pressure values ​​on the elastic cushion surface to determine whether a part of the user's body is in contact with the mattress; The first position sensor determines the liquid-filled cell corresponding to the user's body part that is in contact with the mattress according to the pressure value monitored by the pressure sensor; The driving device in the determined liquid-filled cell is controlled to drive the corresponding actuator to move, so that the part of the user's body in contact with the elastic pad surface changes.

[0014] Further, the multiple pressure sensors respectively monitor multiple pressure values ​​applied to the elastic cushion surface when different body parts of the user contact the mattress; The timer monitors the contact duration of the maximum pressure among multiple pressure values; The first position sensor locates the liquid-filled grid corresponding to the contact part of the maximum pressure; When it is monitored that the contact time of the maximum pressure reaches a set value, the driving device in the liquid-filled grid corresponding to the contact part of the maximum pressure is controlled to drive the actuator in the liquid-filled grid to move, so that the part of the body of the user that applies the maximum pressure on the elastic pad surface changes.

[0015] Further, maintaining the body position after the part of the user's body in contact with the elastic cushion surface changes includes the following steps: according to the pressure value monitored by the pressure sensor, the first position sensor determines the liquid-filled cell corresponding to the part of the user's body that is in contact with the mattress; The magnetic field strength of the adjustable magnetic field device in the determined liquid-filled cell is enhanced so that the corresponding actuator is fixed at the current position and abuts against the user's body part through the elastic pad surface.

[0016] In general, the present invention has the following advantages: Multiple pressure sensors monitor the pressure value on the elastic pad surface respectively, and can determine that the user's body part is in contact with the mattress; according to the pressure value monitored by the pressure sensor, the first position sensor can determine the liquid-filled grid corresponding to the user's body part in contact with the mattress; according to the determined liquid-filled grid, the control device can control the driving device in these liquid-filled grids to drive the corresponding actuator to move, so that the user's body part in contact with the elastic pad surface changes. Since the diameter of the actuator is slightly larger than the height of the mattress body, when the actuator in these liquid-filled grids moves, it will push the elastic pad surface to bulge slightly upward, and the contact position and force of the user's body part with the elastic pad surface will change gently. Since there are multiple liquid-filled grids, the mattress can be locally adjusted for certain body parts, thereby avoiding blood circulation disorders caused by certain body parts being under heavy pressure for a long time, and effectively preventing the occurrence of bedsores. The actuator moves in the liquid, which effectively reduces noise, moves more gently, and provides a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a mattress of the present invention.

[0018] Figure 2Schematic diagram of the structure of a linear motor configured for a rectangular liquid-filled grid.

[0019] Figure 3 Schematic diagram of the structure of a rotating motor configured for a circular liquid-filled grid.

[0020] Figure 4 It is a schematic diagram of the structure using an adjustable magnetic field device as a driving device.

[0021] Figure 5 The state of the user using the mattress of the present invention Figure 1 .

[0022] Figure 6 The state of the user using the mattress of the present invention Figure 2 .

[0023] In the figure: 11-elastic cushion surface, 12-mattress body, 121-liquid-filled grid; 21-pressure sensor, 22-first position sensor; 3-Executive Department; 4-Linear motor; 51-rotating motor, 52-telescopic arm; 6-Adjustable magnetic field device. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below.

[0025] like Figure 1 , Figure 5 As shown, a mattress includes a mattress body 12, a pressure sensor 21, a first position sensor 22, an execution unit 3 and a control device; The mattress body 12 includes an elastic cushion surface 11 and a plurality of liquid-filled cells 121 disposed below the elastic cushion surface 11; Each liquid-filled compartment 121 is filled with liquid and is provided with an actuator 3, the diameter of the actuator 3 is slightly larger than the height of the mattress body 12, so that the elastic pad surface 11 area corresponding to the actuator 3 is slightly raised upwards; Each liquid-filled grid 121 is provided with a driving device, which is connected to the actuator 3 and is used to drive the actuator 3 to move in the liquid in the corresponding liquid-filled grid 121; The elastic pad surface 11 is provided with a plurality of pressure sensors 21 and a plurality of first position sensors 22, and the plurality of pressure sensors 21, the plurality of first position sensors 22 and the plurality of liquid-filled grids 121 correspond to each other one by one; The plurality of pressure sensors 21 are used to respectively monitor the pressure values ​​on the elastic pad surface 11 to determine whether a part of the user's body is in contact with the mattress; The first position sensor 22 is used to determine the liquid-filled compartment 121 corresponding to the user's body part that is in contact with the mattress according to the pressure value monitored by the pressure sensor 21; The control device is respectively connected to the driving device, the pressure sensor 21 and the first position sensor 22, and is used to control the driving device in the determined liquid-filled compartment 121 to drive the corresponding actuator 3 to move, so that the part of the user's body in contact with the elastic pad surface 11 changes.

[0026] When the actuator 3 in the liquid-filled grid 121 determined by the first position sensor 22 moves, it will push the corresponding elastic pad surface 11 to bulge slightly upward, and the contact position and force between the user's body parts and the elastic pad surface 11 will change gently. Since there are multiple liquid-filled grids 121, the mattress can be locally adjusted for certain body parts, thereby avoiding blood circulation disorders caused by certain body parts being under heavy pressure for a long time, and effectively preventing the occurrence of bedsores. Controlling the actuator 3 to move back and forth in the liquid-filled grid 121 can make the corresponding elastic pad surface 11 rise and fall, thereby playing a role in massaging the user. The actuator 3 moves in the liquid of the liquid-filled grid 121, which effectively reduces working noise, and the movement is gentler, providing a good user experience.

[0027] When the user is lying in bed and keeping the same posture, the part of the body with the greatest pressure is often the most prone to bedsores and other problems. For this reason, the mattress of the present invention is also provided with a timer, which is used to monitor the contact time of the maximum pressure among the multiple pressure values ​​monitored by the multiple pressure sensors 21; the first position sensor 22 is used to locate the liquid-filled grid 121 corresponding to the contact part of the maximum pressure; the control device is used to control the driving device in the liquid-filled grid 121 corresponding to the contact part of the maximum pressure to drive the actuator 3 in the liquid-filled grid 121 to move when the contact time of the maximum pressure reaches the set value, so that the part of the body with the maximum pressure applied by the user on the elastic pad surface 11 changes. With this structure, the part of the body with the maximum pressure when the user is lying in bed can be quickly found, and the part of the body with the maximum pressure can be continuously changed by moving the actuator 3, so as to avoid a single part being in the maximum pressure state for a long time, thereby more effectively preventing the occurrence of bedsores and other problems.

[0028] like Figure 2 As shown, optionally, the liquid-filled grid 121 is rectangular, and the driving device is a linear motor 4; the linear motor 4 is fixed to the side wall of the liquid-filled grid 121 and connected to the actuator 3, and is used to drive the actuator 3 to move linearly in the liquid-filled grid 121. The linear motor 4 has the advantages of rapid action and controllable position, which is conducive to accurately controlling the movement of the actuator 3.

[0029] like Figure 3As shown, optionally, the liquid-filled grid 121 is circular, the driving device is a rotary motor 51, the rotary motor 51 is arranged at the center of the liquid-filled grid 121, the rotary motor 51 is connected to the actuator 3, and is used to drive the actuator 3 to rotate in the liquid-filled grid 121, and the rotary motor 51 is provided with a telescopic arm 52, and the telescopic arm 52 is connected to the actuator 3, and is used to adjust the rotation radius of the actuator 3. By adjusting the rotation radius of the actuator 3, the actuator 3 can be moved to more positions in the rotation plane, which is conducive to accurately controlling the movement of the actuator 3 and increasing the controllable adjustment area.

[0030] like Figure 4 As shown, optionally, the driving device is an adjustable magnetic field device 6, the actuator 3 is made of a magnetically absorbable material, the adjustable magnetic field device 6 drives the actuator 3 to move through an adjustable magnetic field, the liquid-filled grid 121 can be of any shape, and a plurality of adjustable magnetic field devices 6 are arranged around the inner wall of the liquid-filled grid 121, which can form a composite magnetic field in multiple directions and multiple intensities through combination, thereby realizing flexible control of the actuator 3, and outputting appropriate driving force as needed, so that the actuator 3 can reach any position in the liquid-filled grid 121, thereby greatly improving the application scenarios.

[0031] Optionally, the elastic pad surface 11 corresponding to each liquid-filled grid 121 is provided with a plurality of first position sensors 22, and the execution part 3 is built with a second position sensor. The control device is wirelessly connected to the first position sensor 22 and the second position sensor respectively, and is used to control the movement of the corresponding execution part 3 according to the position information monitored by any first position sensor 22 in each liquid-filled grid 121, until the position information monitored by the second position sensor is consistent with the position information monitored by the first position sensor 22, at which time the execution part 3 moves to the position of the first position sensor 22. With this structure, the execution part 3 can be more finely controlled in each liquid-filled grid 121, so as to achieve fine-tuning of different body parts of the user.

[0032] Preferably, the actuator 3 is a sphere. The spherical structure is not easy to damage the elastic pad surface 11, and it is softer when contacting the user's body parts through the elastic pad surface 11, which is conducive to enhancing the experience. The resistance of the sphere in the liquid is small, which can reduce the power consumption of the driving device. When the sphere is driven by the adjustable magnetic field device 6, the sphere can also roll in the liquid, which can achieve a softer massage function.

[0033] Optionally, the liquid-filled grids 121 are arranged in two rows along the longitudinal direction of the mattress body 12, and are symmetrically arranged on the mattress body 12. Normally, each ball can be adjusted to the edge of each row of the mattress, leaving the middle space of the elastic pad surface 11 for the user to lie in bed. When the ball adjustment function is needed, the driving device is used to move the required ball from the edge of the mattress to the required position.

[0034] A mattress adjustment method comprises the following steps: A plurality of pressure sensors 21 respectively monitor the pressure values ​​on the elastic cushion surface 11 to determine whether a part of the user's body is in contact with the mattress; According to the pressure value monitored by the pressure sensor 21, the first position sensor 22 determines the liquid-filled cell 121 corresponding to the user's body part that is in contact with the mattress; The driving device in the determined liquid-filled compartment 121 is controlled to drive the corresponding actuator 3 to move, so that the part of the user's body that contacts the elastic pad surface 11 changes.

[0035] Through the above steps, the mattress can be adjusted locally for certain parts of the body, thereby preventing certain parts of the body from being under heavy pressure for a long time and causing blood circulation disorders, and effectively preventing bedsores. When the execution part 3 moves back and forth in the liquid-filled grid 121, it can also play a role in massaging the user.

[0036] Further, the multiple pressure sensors 21 respectively monitor multiple pressure values ​​applied to the elastic cushion surface 11 when different body parts of the user contact the mattress; The timer monitors the contact duration of the maximum pressure among multiple pressure values; The first position sensor 22 locates the liquid-filled grid 121 corresponding to the contact position of the maximum pressure; When it is monitored that the contact time of the maximum pressure reaches the set value, the driving device in the liquid-filled grid 121 corresponding to the contact part of the maximum pressure is controlled to drive the actuator 3 in the liquid-filled grid 121 to move, so that the part of the body of the user that applies the maximum pressure on the elastic pad surface 11 changes.

[0037] Through the above steps, the body part with the maximum pressure when the user is in bed can be quickly found, and the body part with the maximum pressure can be continuously changed by moving the execution part 3 to avoid a single part being in the maximum pressure state for a long time, thereby more effectively preventing the occurrence of bedsores and other problems.

[0038] like Figure 6 As shown, further, when the part of the user's body in contact with the elastic pad surface 11 changes, taking the driving device using the adjustable magnetic field device 6 as an example, the current body position can be maintained by the following steps: According to the pressure value monitored by the pressure sensor 21, the first position sensor 22 determines the liquid-filled cells 121 corresponding to the user's body part that is in contact with the mattress, that is, first determines which execution parts 3 in the liquid-filled cells 121 need to take action; Then, the magnetic field strength of the adjustable magnetic field device 6 in the determined liquid-filled grid 121 is enhanced, so that the corresponding actuator 3 is subjected to a stronger magnetic force, so that it can be fixed in the current position by forcibly contacting the user's body part through the elastic pad surface 11. This method is used to maintain the user's current body position without complex mechanical structure control, and the actuator 3 can reach any position in the liquid-filled grid 121 to achieve fine adjustment.

[0039] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A mattress, characterized in that: It includes a mattress body, a pressure sensor, a first position sensor, an actuator and a control device; The mattress body comprises an elastic cushion surface and a plurality of liquid-filled cells arranged below the elastic cushion surface; Each liquid-filled compartment is filled with liquid and is provided with an actuator, the diameter of which is slightly larger than the height of the mattress body; Each liquid-filled cell is provided with a driving device, which is connected to the actuator and is used to drive the actuator to move in the liquid in the corresponding liquid-filled cell; The elastic pad surface is provided with a plurality of pressure sensors and a plurality of first position sensors, and the plurality of pressure sensors, the plurality of first position sensors and the plurality of liquid-filled grids correspond to each other one by one; A plurality of pressure sensors are used to respectively monitor the pressure values ​​on the elastic pad surface to determine whether a part of the user's body is in contact with the mattress; The first position sensor is used to determine the liquid-filled cell corresponding to the user's body part that is in contact with the mattress according to the pressure value monitored by the pressure sensor; The control device is respectively connected to the driving device, the pressure sensor and the first position sensor, and is used to control the driving device in the determined liquid-filled cell to drive the corresponding actuator to move, so that the part of the user's body in contact with the elastic pad surface changes.

2. A mattress according to claim 1, characterized in that: It also includes a timer, which is used to monitor the contact time of the maximum pressure among multiple pressure values ​​monitored by multiple pressure sensors; the first position sensor is used to locate the liquid-filled grid corresponding to the contact part of the maximum pressure; the control device is used to control the driving device in the liquid-filled grid corresponding to the contact part of the maximum pressure to drive the actuator in the liquid-filled grid to move when it is monitored that the contact time of the maximum pressure reaches a set value, so as to change the part of the body of the user that applies the maximum pressure on the elastic pad surface.

3. A mattress according to claim 1, characterized in that: The liquid-filled grid is rectangular, and the driving device is a linear motor; the linear motor is fixed to the side wall of the liquid-filled grid and connected to the actuator, and is used to drive the actuator to move linearly in the liquid-filled grid.

4. The mattress according to claim 1, characterized in that: The liquid-filled grid is circular, and the driving device is a rotary motor, which is arranged at the center of the liquid-filled grid and connected to the actuator to drive the actuator to rotate in the liquid-filled grid. The rotary motor is provided with a telescopic arm, which is connected to the actuator to adjust the rotation radius of the actuator.

5. The mattress according to claim 1, characterized in that: The driving device is an adjustable magnetic field device. The inner wall of the liquid-filled grid is provided with a plurality of adjustable magnetic field devices. The actuator is made of a magnetically absorbable material. The adjustable magnetic field device drives the actuator to move through the adjustable magnetic field.

6. The mattress according to claim 1, characterized in that: The elastic pad surface corresponding to each liquid-filled grid is provided with multiple first position sensors, the actuator is built with a second position sensor, and the control device is wirelessly connected to the second position sensor for controlling the movement of the corresponding actuator according to the position information monitored by any first position sensor in each liquid-filled grid until the position information monitored by the second position sensor is consistent with the position information monitored by the first position sensor.

7. The mattress according to claim 1, characterized in that: The actuator is a sphere.

8. A mattress adjustment method according to any one of claims 1 to 7, characterized in that: The following steps are included: A plurality of pressure sensors respectively monitor the pressure values ​​on the elastic cushion surface to determine whether a part of the user's body is in contact with the mattress; The first position sensor determines the liquid-filled cell corresponding to the user's body part that is in contact with the mattress according to the pressure value monitored by the pressure sensor; The driving device in the determined liquid-filled cell is controlled to drive the corresponding actuator to move, so that the part of the user's body in contact with the elastic pad surface changes.

9. The adjustment method according to claim 8, characterized in that: A plurality of pressure sensors respectively monitor a plurality of pressure values ​​applied to the elastic cushion surface when different parts of the user's body contact the mattress; The timer monitors the contact duration of the maximum pressure among multiple pressure values; The first position sensor locates the liquid-filled grid corresponding to the contact part of the maximum pressure; When it is monitored that the contact time of the maximum pressure reaches a set value, the driving device in the liquid-filled grid corresponding to the contact part of the maximum pressure is controlled to drive the actuator in the liquid-filled grid to move, so that the part of the body of the user that applies the maximum pressure on the elastic pad surface changes.

10. The adjustment method according to claim 8, characterized in that: Maintaining the body position after the part of the user's body in contact with the elastic cushion surface changes includes the following steps: according to the pressure value monitored by the pressure sensor, the first position sensor determines the liquid-filled cell corresponding to the part of the user's body that is in contact with the mattress; The magnetic field strength of the adjustable magnetic field device in the determined liquid-filled cell is enhanced so that the corresponding actuator is fixed at the current position and abuts against the user's body part through the elastic pad surface.

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