KR20230125453A - A medical bed that controls the side rails by estimating the patient's posture - Google Patents

Abstract

According to an embodiment, provided is a medical bed for controlling side rails by estimating a posture of a patient, in which the medical bed comprises: a bed mattress; a frame which receives and fixes the bed mattress; a plurality of side rails which are installed along an edge of the frame to be received inside the frame by a descending operation or to be withdrawn from the frame by an ascending operation, and which may ascend or descend independently; a weight sensing unit which measures a pressure in each of a plurality of sections divided on the frame; and a control unit which controls the ascending or descending operation of at least a part of the side rails by estimating a posture of a user based on detection information of the weight sensing unit.

Description

A medical bed that controls the side rails by estimating the patient's posture}

The present invention relates to a medical bed for controlling a side rail by estimating a patient's posture. More specifically, the present invention relates to a medical bed for estimating a posture of a user, who is a patient using the medical bed, and controlling side rails to prevent a fall according to the posture.

In general, for the convenience of medical practice, medical beds provided in nursing homes, nursing homes, hospitals, etc. have headboards and footrests installed to prevent falls, and side rails are provided on both sides in the longitudinal direction, respectively.

Among them, the side rails are installed by closing the entire sides of the bed in the longitudinal direction of the bed or spaced apart from the headboard or footboard at regular intervals. It has a structure that is raised or lowered by a user's manipulation.

However, since the main user of the side rail is an elderly person with low agility or a patient with poor mobility, an accident of falling while manipulating the side rail has occurred.

In addition, there is still a risk of falling due to forgetting to lift the side rail due to inconvenience in use due to repetition of raising or lowering the side rail and stuffiness due to a sense of closure.

According to various conventional technologies for solving this risk, a bed having various types of side rails for preventing a fall is disclosed, and a warning message is transmitted by detecting a patient's fall or the risk of a fall through image taking. Features and the like are also disclosed.

However, the prior art cannot distinguish whether the descent of the side rail is due to the patient's manipulation or forced manipulation in a fall situation, etc., and the side rail is uniformly controlled regardless of whether the patient is located on the bed, and its effectiveness is reduced. There is a problem.

In addition, there is a disadvantage in that immediate action is not performed only indirectly notifying the patient or a third party of the patient's fall and the risk of falling.

In addition, a problem such as a fall prevention rate may occur because the patient's physical condition and posture of the patient using the bed are not considered, and thus a related invention is required.

KR 10-2099378 B1

The present invention has been made to solve the problems of the prior art as described above, and an object of the present invention is to provide a medical bed that controls side rails by estimating a patient's posture.

In addition, the present invention is to provide a medical bed that controls side rails that determine the user's physical condition.

In addition, the present invention is intended to provide a medical bed that controls side rails by estimating a patient's posture including a plurality of side rails that operate individually/automatically.

In addition, the present invention is to provide a medical bed that controls the side rails by estimating the patient's posture, including a configuration that replaces the role of the side rails.

In addition, the present invention is to provide a medical bed that controls the side rails by measuring the degree of risk for each user according to the lifting state of the side rails and estimating the posture of the patient.

However, the technical problems to be achieved by the present invention and the embodiments of the present invention are not limited to the technical problems described above, and other technical problems may exist.

Examples include bed mattresses; a frame for storing and fixing the bed mattress; a plurality of side rails installed along the edge of the frame and accommodated into the frame in a descending motion, or pulled out from the frame in an upward motion, and capable of independently lifting or lowering; a weight sensor for measuring pressure in each of a plurality of sections divided on the frame; and a control unit for estimating the user's posture based on the detection information of the weight sensor and controlling a lifting or lowering operation of at least some of the side rails among the plurality of side rails. We can provide a medical bed that does.

On the other hand, the control unit monitors the pressure detected in each of the plurality of sections for a predetermined period of time to set a body classification standard, and the upper portion of the bed mattress is centered on sections in which pressure is detected according to the body classification standard. Zone information for dividing a surface into a plurality of zones is set, user posture data is obtained based on pressure information detected in the plurality of zones according to the zone information, and user posture data is obtained based on the user posture data. It is possible to provide a medical bed for controlling a side rail by estimating a patient's posture controlling a lifting or lowering operation.

In another aspect, the plurality of zones include a first zone of an upper region of the upper surface of the bed mattress, a third zone of a lower region, and a third zone between the first and second zones, the user's posture The data is first posture data estimated as a sleeping position when a pressure exceeding a preset value is detected for a preset time in the first to third zones, and for a preset time in two of the first to third zones. When a pressure exceeding a preset value is detected, when a change in pressure exceeding a preset value is detected in two of the first to third zones and the second posture data estimated as a sitting posture and a change in pressure exceeding the preset value for a preset time, the desired posture to go out It is possible to provide a medical bed that controls the side rails by estimating the patient's posture including the third posture data estimated as .

In another aspect, when the user posture data is first posture data or second posture data, the control unit determines whether the side rail is raised or lowered, and outputs a predetermined feedback signal when the side rail is in a lowered state; It is possible to provide a medical bed in which the side rails are controlled by estimating the posture of a patient performing an automatic lifting process of lifting the side rails.

In another aspect, the side rail includes a plurality of side rails that can be raised or lowered independently of each other, and a plurality of auxiliary units installed at the lower side of the frame corresponding to the positions of each of the plurality of side rails; It is possible to provide a medical bed that controls the side rails by estimating the posture.

In another aspect, the control unit determines whether a side rail in a lowered state among the plurality of side rails can be switched to a raised state, and draws out an auxiliary unit corresponding to a side rail that cannot be switched to a raised state to maintain the frame. It is possible to provide a medical bed that controls the side rails by estimating the patient's extended posture.

In another aspect, in each of the plurality of auxiliary units, the control unit detects a separation length of the body detached from the medical bed, the control unit adjusts the withdrawal length of the auxiliary unit based on the separation length, withdraws the auxiliary unit, and withdraws the auxiliary unit. It is possible to provide a medical bed that controls the side rails by estimating the patient's posture extending the frame by driving the auxiliary side rails upward.

On the other side, each of the plurality of auxiliary parts includes a plurality of lifting parts, and the control unit raises at least some of the lifting parts of the plurality of lifting parts to be flush with the upper surface of the bed mattress according to the withdrawal length of the auxiliary part. It is possible to provide a medical bed that controls side rails by estimating a patient's posture.

The medical bed for controlling the side rails by estimating the posture of the patient according to an embodiment of the present invention determines the user's physical condition, thereby preventing the user from falling more accurately by changing the side rail control method according to each user's physical condition. has the effect of

In addition, the medical bed that controls the side rails by estimating the patient's posture according to an embodiment of the present invention includes a plurality of side rails that operate individually/automatically, so that the user can use the side rails in an easy-to-operate position. Therefore, there is an effect of resolving the inconvenience of the user moving to the place where the side rail is located.

In addition, the medical bed that controls the side rails by estimating the patient's posture according to an embodiment of the present invention includes a configuration that replaces the role of the side rails, so that a fall accident that may occur in the case of non-operation/malfunction of the side rails It has the effect of reducing the incidence rate.

In addition, the medical bed that controls the side rails by estimating the patient's posture according to an embodiment of the present invention measures the risk level for each user according to the lifting state of the side rails and outputs a feedback signal according to the risk level to prevent the user's fall accident. It has a preventive effect.

However, the effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood from the description below.

1 is a perspective view of a medical bed installed in a medical environment according to an embodiment of the present invention.
2 is an enlarged view of a frame of a medical bed according to an embodiment of the present invention.
3 is an internal block diagram of a device for controlling a side rail according to an embodiment of the present invention.
4 is a flowchart illustrating a method of controlling side rails of a medical bed by estimating a patient's posture according to an embodiment of the present invention.
5 is an example for explaining a criterion for classifying a body of a user using a medical bed that controls a side rail by estimating a patient's posture according to an embodiment of the present invention.
6 is an example of a side view of an auxiliary part of a medical bed that controls a side rail by estimating a patient's posture according to another embodiment of the present invention.
7 is a flowchart illustrating a method of controlling an auxiliary unit of a medical bed according to another embodiment of the present invention.
8 is an example of how an auxiliary unit of a medical bed according to another embodiment of the present invention is controlled.

Since the present invention can apply various transformations and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. Effects and features of the present invention, and methods for achieving them will become clear with reference to the embodiments described later in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms. In the following embodiments, terms such as first and second are used for the purpose of distinguishing one component from another component without limiting meaning. Also, expressions in the singular number include plural expressions unless the context clearly dictates otherwise. In addition, terms such as include or have mean that features or elements described in the specification exist, and do not preclude the possibility that one or more other features or elements may be added. In addition, in the drawings, the size of components may be exaggerated or reduced for convenience of description. For example, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to the illustrated bar.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and when describing with reference to the drawings, the same or corresponding components are assigned the same reference numerals, and overlapping descriptions thereof will be omitted. .

An apparatus for controlling side rails of a medical bed according to an embodiment of the present invention divides an area where a user lies on a bed into zones according to a predetermined criterion, measures pressure or weight for each zone, and detects the user's motion and state. Thus, the side rails can be controlled according to the user's movement and condition.

To this end, a bed mattress on which a user lies on a bed and a bed frame on which the bed mattress is located may be divided into a plurality of sections.

- Medical bed (100)

1 is a perspective view of a medical bed installed in a medical environment according to an embodiment of the present invention.

Referring to FIG. 1 , the medical bed 100 may include a bed mattress m, a weight sensor 110, and side rails 120.

In an embodiment of the present invention, the weight sensor 110 may be installed on the medical bed 100 to detect the weight of a patient (hereinafter referred to as a user) lying on the bed.

As the user takes a sleeping posture on the bed, the area where the user lies on the bed mattress (m), which is the contact area between the surface of the bed mattress (m) and the user's body, is, for example, the bed mattress (m) and the bed mattress (m ), and may mean a bed frame for storing and fixing, and in the embodiment of the present invention, it may be described based on the frame for convenience of description.

The weight sensor 110 detects pressure for each section based on sections (hereinafter referred to as sections) dividing the frame F according to a predetermined criterion to detect weight information for each section, or to detect weight information for each section. Based on the weight information of the user can be estimated.

2 schematically shows a frame of a medical bed according to an embodiment of the present invention.

Referring to FIG. 2 , the frame F may be divided into a predetermined number of sections to determine the body shape and posture of a user lying on the medical bed 100 .

In the embodiment of the present invention, sections divided into 16 divisions are described for convenience of explanation. If so, the number of divisions is not limited thereto.

In the embodiment, the frame F may be divided into a first section S1 to a sixteenth section S16 as shown in FIG. 2 . At this time, the arrangement of the plurality of sections S1 to S16 shown in FIG. 2 is an example, and the first section S1 to the fourth section S4 are adjacent to the head of the medical bed 100. can be defined as

In order to measure pressure or weight for each of the first section (S1) to the sixteenth section (S16), in the embodiment, the weight sensor 110 uses a plurality of pressure measuring sensors (PS) located in each of a plurality of sections. can include

At this time, the pressure measurement sensor PS is a sensor capable of measuring pressure according to the user's body weight, and may be, for example, a Force Sensitive Resistor (FSR) and a strain gauge, but is not limited thereto.

Each pressure measuring sensor PS is included in the plurality of sections S1 to S16 and can measure the pressure applied to each section.

In an embodiment of the present invention, the pressure applied to each section is due to the user's body weight, and the pressure applied to each section can be flexibly changed as the user changes his/her posture.

For example, assuming that the user is positioned in the right posture at the center of the bed mattress m, the user's head may be located on a portion of the second section S2 or the third section S3. Accordingly, the pressure sensor included in the second section (S2) or the third section (S3) can detect the pressure due to the weight of the user's head.

The weight sensor 110 may acquire various data and information related to the user through at least one pressure sensor PS.

In an embodiment, the weight sensor 110 may sense various types of data (eg, pressure measurement data) for the user based on at least one pressure measurement sensor PS.

In the same way, the weight sensor 110 may sense pressure according to the weight of other body parts of the user, and the processing unit may obtain pressure measurement data based on the sensed pressure.

In the embodiment, the pressure measurement data may refer to sections in which pressure is sensed when the user lies down on the bed mattress m and information related to the degree of pressure sensed for each section.

At this time, the pressure measurement data performed initially may be measurement data in a state in which the user lies in the right posture in the middle of the bed mattress m. At this time, the pressure measurement data includes the section where the pressure is sensed according to the user's body information (eg, height information, head size information, shoulder width information, leg length information, weight information, etc.) and the degree of pressure sensed for each section. can be different

For example, user A with a height of 180 cm and a weight of 80 kg has more pressure-detected sections than user B with a height of 150 cm and a weight of 50 kg, and the degree of pressure detected for each section may be greater.

In addition, the degree of pressure detected for each section may be different according to the curvature of the user's body. For example, in the section of the user's body where the head, buttocks, and feet touch, the contact pressure is higher than the detected pressure on the location where other areas of the body touch. Pressure can be measured.

In addition, the processing unit may transmit pressure measurement data measured by the sensor to a processor of a device that controls the side rail.

In an embodiment of the present invention, the side rails 120 may refer to a structure mounted on at least one side of the medical bed 100 to prevent a user from falling on the bed mattress m. In detail, the side rail 120 is installed along the edge of the frame (F), and may be configured to descend or rise at each of the left and right edges of the frame (F).

Referring back to FIG. 1 , a plurality of side rails 120 may be mounted on both sides of the frame F of the medical bed 100 . At this time, the side rails 120 include first side rails 120-1 to third side rails 120-3 mounted on the left side and fourth side rails 120-4 to sixth side rails mounted on the right side. (120-6).

In the embodiment of the present invention, description is made based on three side rails mounted on both sides, but the number is not limited to that shown and may be composed of more than three side rails on each side.

The plurality of side rails 120-1 to 120-6 may be independently controlled to individually ascend or descend.

In detail, the plurality of side rails 120-1 to 120-6 may be in an elevated state to prevent the user from falling when the user is positioned on the bed mattress (m), and the user may be removed from the medical bed 100. If you want to escape, it can be converted to a descending state.

At this time, a motor device for automatically performing lifting and lowering operations may be provided on each of the plurality of side rails 120-1 to 120-6.

The plurality of side rails 120-1 to 120-6 are driven by a motor device of each side rail under the control of a processor included in a device for controlling the side rails installed on the medical bed 100, so that they can be raised or lowered. You can perform lowering movements.

Each of the plurality of side rails 120-1 to 120-6 may include a detection sensor, and accordingly, when a user's body part approaches, a predetermined operation may be individually performed.

A device for controlling side rails (hereinafter referred to as side rail control device 200) may be installed on one side of the medical bed 100 having the above configuration.

- Side rail control device (200)

In the embodiment of the present invention, the side rail control device 200 determines the movement and posture of the user located on the bed mattress m, controls the lifting or lowering operation of the side rail 120 according to the identified information, and It means a device for monitoring the lifting or lowering state of the rail 120 .

The side rail control device 200 interlocks with the weight sensor 110 to sense whether the user is located on the medical bed 100, and detects the current state of the user located on the medical bed 100 to thereby detect the user's current state. The side rail 120 can be controlled according to the movement of the user and the user's positional condition.

3 is an internal block diagram of a device for controlling a side rail according to an embodiment of the present invention.

Referring to FIG. 3 , the side rail control device 200 of the medical bed 100 includes a communication processor 210, a memory 220, a sensor system 230, an input system 240, a display system 250 and A controller 260 may be included.

The communication processor 210 may include one or more devices for communicating with external devices. Such a communication processor 210 may communicate through a wireless network.

In detail, the communication processor 210 may receive pressure measurement result data detected by the pressure measurement sensor PS for realizing the side rail 120 control environment from the pressure measurement sensor PS. In various embodiments, the communications processor 210 may receive input signals by communicating with various user input components, such as wired or wirelessly connected external controllers.

In various embodiments, a command signal commanding the raising or lowering of the side rail 120 may be input from an external controller. The controller 260 may drive the side rail 120 based on the received command signal.

In various embodiments, the communication processor 210 may transmit and receive various types of data for controlling the side rails 120 to other terminals and/or external servers.

This communication processor 210, technical standards or communication schemes for mobile communication (eg, LTE (Long Term Evolution), LTE-A (Long Term Evolution-Advanced), 5G NR (New Radio), WIFI) Alternatively, data may be transmitted and received wirelessly with at least one of a base station, an external terminal, and an arbitrary server on a mobile communication network established through a communication device capable of performing a short-distance communication method, but is not limited thereto.

The memory 220 may store any one or more of various application programs, data, and commands for providing a control environment for the side rail 120 .

In addition, the memory 220 may store commands and data that may be used to control the side rail 120 according to a user's movement.

Also, the memory 220 may include a program area and a data area.

Here, the program area according to the embodiment may be linked between an Operating System (OS) that boots the processor and functional elements, and the data area stores data generated according to the use of the medical bed 100. It can be.

At this time, in the embodiment, data generated according to the use of the medical bed 100 may mean pressure measurement data, user body data, user posture data, and elevation state data, etc., and the memory 220 stores these data. can be saved

Also, the memory 220 may include at least one or more non-transitory computer-readable storage media and temporary computer-readable storage media.

For example, the memory 220 may be various storage devices such as ROM, EPROM, flash drive, hard drive, etc., and web storage that performs the storage function of the memory 220 on the Internet can include

The sensor system 230 may include various sensors such as an image sensor, a position sensor, an audio sensor, a distance sensor, a proximity sensor, a touch sensor, and a detection sensor.

Here, the image sensor may capture an image and/or video of a physical space around the side rail control device 200 .

In an embodiment, the image sensor may capture and obtain an image (eg, a user image, etc.) related to side rail control.

In addition, the image sensor is disposed on the front or/or rear side of the side rail control device 200 to obtain an image by photographing the front, and through a camera disposed toward the outside of the side rail control device 200, physical space can be photographed.

Such an image sensor may include an image sensor device and an image processing module. In detail, the image sensor may process still images or moving images obtained by an image sensor device (eg, CMOS or CCD).

In addition, the image sensor may extract necessary information by processing a still image or video acquired through the image sensor device using an image processing module, and transmit the extracted information to the controller 260 .

Such an image sensor may be a camera assembly including at least one camera. The camera assembly may include a general camera that captures a visible light band, and may further include a special camera such as an infrared camera and a stereo camera.

In addition, the above image sensor may be included in the side rail control device 200 and operated according to embodiments, or may be included in an external device (eg, an external server) and based on the communication processor 210 described above. It can also operate through interlocking.

The position sensor IMU may detect at least one of movement and acceleration of the side rail 120 . For example, it may be made of a combination of various position sensors such as an accelerometer, a gyroscope, and a magnetometer.

Also, the position sensor (IMU) may recognize spatial information about a physical space around the side rail control device 200 .

The audio sensor may recognize sounds around the side rail control device 200 .

In detail, the audio sensor may include a microphone capable of detecting voice input.

In the embodiment, the audio sensor may output a predetermined signal sound for notifying a user or the like of a state change of the side rail 120 .

In addition, the detection sensor may detect the lifting/lowering state of the side rail 120 .

For example, the detection sensor may detect an operating state of the side rail 120 included in the medical bed 100 by using a detection sensor operating based on ultrasonic waves and infrared rays.

The input system 240 may detect a user's input of the medical bed 100 (eg, a gesture, voice command, actuation of a button, or other type of input).

In detail, the input system 240 may include a predetermined button, a touch sensor, and/or an image sensor that receives a user motion input.

Also, the input system 240 may be connected to an external controller to receive a user's input.

The display system 250 may output various information related to the control environment of the side rail 120 as a graphic image.

In detail, the display system 250 may include a display that outputs an image and a touch sensor that detects a user's touch input.

For example, the display may be implemented as a touch screen by forming a mutual layer structure or integrally with the touch sensor. Such a touch screen may function as a user input unit providing an input interface between the side rail control device 200 and the user, and may provide an output interface between the side rail control device 200 and the user.

Such displays include a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display. , a 3D display, and an e-ink display.

The controller 260 may include at least one processor capable of executing commands stored in the memory 220 to perform various tasks for creating a control environment for the side rail 120 .

In the embodiment of the present invention, the control unit 260 may control the side rails 120 included in the medical bed 100 according to the user's movement by controlling and driving the overall operation of each unit described above.

In detail, the controller 260 processes and analyzes pressure sensors located in a plurality of sections of the medical bed 100 and pressure measurement result data measured from the pressure sensors to determine the pressure range and pressure range of the plurality of pressure sensors PS. It is possible to determine the pressing speed, determine the user's movement and posture based on the pressure measurement result data, and operate the side rails 120 included in the medical bed 100 according to the determination.

The control unit 260 may be a system-on-a-chip (SOC) suitable for a terminal including a central processing unit (CPU) and/or a graphics processing unit (GPU), and an operating system (OS) stored in the memory 220 and / or an application program may be executed, and each component mounted in the terminal may be controlled.

In addition, the control unit 260 may internally communicate with each component through a system bus, and may include one or more predetermined bus structures including a local bus.

The controller 260 includes application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, It may be implemented using at least one of micro-controllers, microprocessors, and electrical units for performing other functions.

- How the side rail control device 200 controls the side rail

The control unit 260 included in the side rail control device 200 may control the side rails by detecting a user's motion based on the pressure measurement data obtained from the weight sensor 110 of the medical bed 100. .

4 is a flowchart illustrating a method of controlling side rails of a medical bed according to an embodiment of the present invention.

Referring to FIG. 4 , in the method of controlling the side rails of the medical bed (S100) according to an embodiment of the present invention, the controller 260 may determine whether a user exists in the medical bed 100. . (S101)

In detail, the control unit 260 determines whether a user is located in the medical bed 100 by determining whether a pressure equal to or higher than a predetermined reference value is detected based on the analysis result of the pressure measurement data from the processing unit of the medical bed 100. can do.

That is, the control unit 260 may determine that no user is present on the medical bed 100 and maintain the lowered state of the side rails 120 when pressure equal to or higher than a predetermined reference value is not detected. (S101-1)

On the other hand, the controller 260 may determine that a user exists in the medical bed 100 when it is determined that a pressure equal to or greater than a predetermined reference value is detected.

In addition, the controller 260 estimates the posture of the user located on the medical bed 100 based on the determination, obtains user posture data matching the estimated posture of the user, and based on the obtained user posture data It is possible to determine whether the side rail 120 is raised or lowered.

To this end, the controller 260 may set a body classification criterion for each user in the pressure measurement data.

In various embodiments, the controller 260 may monitor the pressure detected in each of the plurality of sections for a predetermined period of time to set a body classification criterion.

In some embodiments, the user or medical personnel transmits a body division criterion setting command to the controller 260 through an external controller or an external input device so that the body division criterion is set while the user maintains a comfortable sleeping position. can

The controller 260 may monitor the pressure detected in each of the plurality of sections for a predetermined period of time in response to a command for setting the body classification criteria. And, it is possible to detect sections in which a pressure equal to or greater than a predetermined reference value is detected. Also, the control unit 260 may set zone information dividing the upper surface of the bed mattress m into a plurality of zones based on sections where pressure is detected.

In detail, in an embodiment, the control unit 260, among the sections where pressure is/sensed, the section where the user's head touches is the upper portion (F-1), and the section from the beginning of the upper body excluding the user's head to the hip touches the middle portion. Areas of the pressure measurement data may be divided into (F-2) and a lower portion (F-3) from a section where the user's buttocks touch to a section where the user's feet touch.

If the area that the user's body touches is defined differently, the upper area of the upper surface of the bed is the upper area (F-1), the lower area is the lower area (F-3), and the area between them is the middle area (F-2). can be distinguished.

5 is an example for explaining a criterion for classifying a user's body using a medical bed that controls side rails according to an embodiment of the present invention.

Taking the above-described example again in the description of the medical bed 100, FIG. 5 (a) is an example showing user A located on the medical bed 100, and (b) is an example of user B located on the medical bed 100. is an example showing

Typically, when the user lies down, the head of the user is located on the upper side of the frame, so the upper part of user A (F-1a) and the upper part of user B (F-1b) may be the same.

Since user A is taller than user B, user A's middle (F-2a) may be set to a wider area than user B's middle (F-2b).

Also, the lower part of user A (F-3a) and the lower part of user B (F-3b) may have different zones set due to the height difference between the two users.

In an embodiment, the controller 260 may obtain user posture data by estimating the posture of the user based on a zone set according to a body classification criterion for each user.

In detail, the controller 260 may obtain user posture data by estimating the posture of the user based on a change in pressure sensed in real time in each zone divided according to the set body classification criterion for each user.

The change in the pressure detected in each of the divided zones may be different according to the user's posture, such as a sleeping posture and a sitting posture. Accordingly, the user's posture data may include a plurality of posture data for each posture taken by the user. .

The user posture data is the first posture data estimated as a sleeping posture when a pressure exceeding a predetermined value is detected for a preset time in the first to third zones, and two zones of the first to third zones. When a pressure exceeding a preset value is detected for a preset time, a change in pressure exceeding a preset value for a preset time is detected in two of the first to third zones and the second posture data estimated as a sitting posture Third posture data estimated as a desired posture to go out may be included.

For example, when a user normally takes a sleeping position on the medical bed 100, at least one or more sections included in the upper portion F-1 and at least one or more sections included in the middle portion F-2 are included. And pressure sensors of at least one or more of the sections included in the lower section F-3 may sense the pressure.

At this time, when the user changes the posture from the sleeping position to the sitting position, the pressure of at least one section included in the upper portion F-1 may not be measured in the corresponding section, and at the same time, the pressure included in the middle portion F-2 At least one section may have an increased pressure measured in that section.

That is, the controller 260 may obtain user posture data based on the change in pressure detected for each zone.

At this time, the user's posture may include a sleeping posture, a sitting posture, a desired posture to go out, and the like, taken by the user on a bed.

Here, the posture desired to go out means a posture in which the user wishes to go out in order to escape from the bed.

Referring back to FIG. 2, assuming that the side rail 120 of the medical bed 100 is located on the left side of the ninth section S9 and the thirteenth section S13, the pressure is measured only in at least one section of area A. and if the sum of the pressures measured in the corresponding section shows a difference between the weight of the user and less than a preset value, it can be estimated that the user has taken a posture desired to go out.

That is, the user posture data may include first posture data estimated that the user is sleeping, second posture data estimated that the user is sitting, and third posture data estimated that the user wishes to go out. there is.

Referring back to FIG. 4 , next, when it is determined that a user exists in the medical bed 100, the controller 260 may determine whether the side rails 120 are in an elevated state. (S103)

In detail, in the embodiment, the control unit 260 may determine whether the side rail 120 is in an elevated state according to the acquired user posture data.

In more detail, in the embodiment, the controller 260 may determine whether the side rail 120 is in an elevated state when the obtained user posture data is the first and second posture data.

At this time, when the side rail 120 is in an elevated state, the controller 260 may maintain the elevated state of the side rail 120 by returning to step S101.

In addition, when the side rail 120 is not in an elevated state, the controller 260 determines that the user is present on the medical bed 100 but is in a dangerous state because the side rail 120 is not elevated to perform step S105. can

The controller 260 may output a feedback signal when the side rail 120 is not in an elevated state. (S105)

At this time, the feedback signal may be output to a separate monitoring device that monitors the patient owned by the patient's guardian or hospital staff, or controls the side rail of the monitoring device owned by the user and the medical bed 100 where the user is located. It may also be output to device 200 .

In addition, the feedback signal may be output in various ways such as visual, auditory, and physical. For example, a visual method of displaying a notification window on the screen of the monitoring device, an auditory method of outputting a signal to the monitoring device and the side rail control device 200, and a physical method of applying a predetermined vibration to the medical bed 100, etc. It may be output as, but is not limited thereto.

That is, in the embodiment, the control unit 260 may inform the patient, the patient's guardian, and hospital personnel of the patient's dangerous condition by outputting a feedback signal.

After outputting the feedback signal, the control unit 260 may lift and drive the side rail 120 maintained in a lowered state. (S107)

At this time, the controller 260 automatically moves the side rails 120 according to a predetermined automatic lifting process in order to prevent a fall accident when the user is positioned on the medical bed 100 but does not lift the side rails 120. can ascend

The preset automatic lifting process may be a process in which the control unit 260 that receives the feedback signal operates the motor of the side rail 120 .

To this end, the control unit 260 automatically operates the motor device of the side rail 120 based on a result of measuring the time for which the pressure detected for each zone is maintained at a pressure value within a preset range based on the user's posture data. The lifting process can be set in advance.

In an embodiment, the control unit 260 may perform an automatic lifting process when the pressure sensed for each zone is maintained for a predetermined time (eg, 5 to 30 minutes).

For example, if at least one section in each of the upper (F-1), middle (F-2), and lower (F-3) sections senses pressure, and the sensed pressure is maintained for 30 minutes, the controller 260 An automatic elevating process may be performed by considering that the user is sleeping on the medical bed 100 .

In addition, if at least one or more sections of at least one of the upper (F-1), middle (F-2) and lower (F-3) zones senses the pressure, and the sensed pressure is maintained for 5 minutes, The controller 260 may perform an automatic lifting process by considering that the user is resting on the medical bed 100 .

In addition, the control unit 260 may receive a predetermined command signal from an external monitoring device and move the side rail 120 up and down accordingly.

For example, the control unit 260 may move the side rail 120 up and down in response to a command signal from a separate monitoring device that monitors the patient carried by the patient's guardian and hospital staff.

In addition, the control unit 260 may determine the weight of the user based on the pressure measurement data of the raised side rail 120 and set the load that the side rail 120 can withstand.

This means that even when the user's arm or leg is placed on the side rail 120 and applies a predetermined pressure to the side rail 120 for various reasons while the user is sleeping or resting, the side rail 120 is forcibly descended so that the user This is to prevent exposure to the risk of falling.

In addition, in order to prevent a user from falling while applying force to the side rails 120 when trying to leave the medical bed 100, in the embodiment, the controller 260 controls the side rails when certain conditions are met. (120) can also be lowered.

The predetermined condition may refer to a case in which 1) the user is in a desired posture to go out and 2) the user's touch input is detected on the display included in the side rail control device 200 .

The user's desired posture to go out may mean that, as in the example shown in FIG. 2 , the user's pressure is sensed only in a section of area A, which is a predetermined area adjacent to the side rail 120 . Area A here is an area of the bed adjacent to either the left or right side rail of the medical bed 100, and can come down from the bed in the left or right direction depending on the surrounding environment where the medical bed 100 is located. It can be an area of the bed adjacent to the side rail in that direction.

That is, when the user's pressure is detected only in the section of area A and the user's touch input is detected on the display of the side rail control device 200 at the same time, the controller 260 can automatically lower the side rail 120. .

On the other hand, in another embodiment, in preparation for a case in which a motor included in the side rail 120 is loaded or a lifting operation cannot be performed due to a predetermined obstacle when the side rail 120 is raised or lowered, the medical bed ( 100), at least one or more auxiliary units (SUB) may be further installed.

Referring back to FIG. 1 , in another embodiment, at least one auxiliary unit (SUB) may be further installed below the frame (F) of the medical bed (100).

In detail, in another embodiment, a number corresponding to the number of the plurality of side rails (120-1 to 120-3 or 120-4 to 120-6) installed on the left or right side of the frame (F) of the medical bed (100). An auxiliary unit (SUB) of may be further installed.

The auxiliary unit (SUB) installed on each of the plurality of side rails (120-1 to 120-3 or 120-4 to 120-6) maintains level with the ground under the control of the control unit 260 and moves the left or right side of the medical bed 100 It can move in one of the right directions and assist the role of the matching side rail.

That is, when at least some of the plurality of side rails (120-1 to 120-3 or 120-4 to 120-6) that individually perform lifting and lowering operations do not operate normally, matching the side rails that do not operate The auxiliary unit (eg, at least one or more of SUB-1 to SUB-3) may operate.

A predetermined device may be provided on the lower side of the frame (F) for smooth movement of the auxiliary unit (SUB).

6 is an example of a side view of an auxiliary part of a medical bed for controlling a side rail according to an embodiment of the present invention.

In another embodiment, the auxiliary part SUB may include a slide part SL, an auxiliary frame SUB-F, and an auxiliary side rail SUB-R.

Referring to (a) of FIG. 6, the slide part (SL) is installed on the lower surface of the frame (F) of the medical bed (100), and is positioned so that the auxiliary frame (SUB-F) is fastened to the frame (F). It is so that it can move left and right along the lower surface of the frame (F) in a direction horizontal to the ground.

To this end, the slide unit SL may include a rail device for moving the auxiliary frame SUB-F and a motor device for providing driving force to the auxiliary frame SUB-F.

At this time, the slide unit SL controls the control unit 260 when pressure is input to an area closest to the side rail (hereinafter referred to as a pressure point PS-1) among the pressure measuring sensors PS included in the frame F. can be operated under the control of

The auxiliary frame SUB-F may play a role as a kind of extra frame that minimizes the user's risk of falling by expanding the area of the frame F instead of serving as a non-operating side rail.

The auxiliary frame SUB-F moves along the rail device of the slide part SL and protrudes from the side surface of the frame F, thereby extending one area of the side surface of the medical bed 100 as a whole.

Also, the auxiliary frame SUB-F may include at least one detection sensor on its surface, and its drawing length may be adjusted based on detection information of the at least one detection sensor.

The auxiliary side rail SUB-R means a predetermined side rail included in the auxiliary frame SUB-F, and can replace the role of the non-operating side rail.

In addition, the auxiliary side rail SUB-R is housed inside the auxiliary frame SUB-F and can be drawn upward from the auxiliary frame SUB-F when the auxiliary part SUB operates. A motor device for driving the auxiliary side rail SUB-R up and down may be installed inside the auxiliary frame SUB-F. In addition, the control unit 260 may control the motor device to drive the auxiliary side rail SUB-R upward when it is necessary to drive the auxiliary side rail SUB-R upward.

7 is a flowchart illustrating a method of controlling an auxiliary unit of a medical bed according to another embodiment of the present invention.

Referring to FIG. 7 , in the method for controlling the auxiliary part of the medical bed (S300) according to another embodiment, the control unit 260 moves the side rail 120 upward to control the auxiliary part (SUB) of the medical bed 100. It is possible to determine whether a transition to the state is possible. (S301)

At this time, the control unit 260 may determine that the shift to the lifting state is impossible when a predetermined load is applied to the motor included in the side rail 120 or when the lifting operation cannot be performed due to obstacles or the like.

The control unit 260 may elevate the side rail 120 when it is possible to switch the side rail 120 to an elevated state. (S301-1) In various embodiments, switching to step S101 described in FIG. 4, the control unit 260 may drive the side rail 120 according to each step.

When determining that the side rail 120 cannot be switched to the raised state, the controller 260 may determine whether pressure is detected by the local pressure detection unit PS-1. (S303)

A plurality of local pressure detection units PS-1 may be installed along the upper surface of the side rail 120 . In the case of a plurality of side rails 120, at least one may be installed on each of them. Also, the local pressure detection unit PS- 1 may be configured to detect physical pressure applied to the upper surface of the side rail 120 .

When a pressure exceeding a preset value is detected by the local pressure detection unit PS-1, it may occur when a part of the user's body located on the medical bed 100 moves out of the bed or is in a position with a risk of falling. That is, a case in which a part of the user's body moves out of the bed pressurizes the local pressure detection unit PS-1, and a case in which a part of the user's body moves out of the bed due to a struggle or the like while sleeping may be cited as an example.

When pressure exceeding a preset value is not detected by the local pressure detection unit PS-1, the control unit 260 determines that the user is located on the medical bed 100 but is not in a position at risk of falling, and returns to step S301. can do.

In addition, when pressure is input to the local pressure detection unit PS-1, the control unit 260 determines that the user is positioned on the medical bed 100 and has a risk of falling, and operates the slide unit SL. . (S305)

In detail, the control unit 260 operates the motor included in the slide unit SL to move the auxiliary frame SUB-F along the installed rail in the direction of the outer circumferential surface of the frame F, as shown in (b) of FIG. It can be moved by a predetermined length (eg, 30 cm, etc.).

At this time, the control unit 260 withdraws the auxiliary frame SUB-F by the degree to which the user's body is separated from the frame F based on at least one detection sensor included on the surface of the auxiliary frame SUB-F. The length can be adjusted.

8 is an example of how an auxiliary unit of a medical bed according to another embodiment of the present invention is controlled.

(a) of FIG. 8 shows that after the user 1 located on the medical bed 100 is taken out of the frame F during sleep and rest, the control unit 260 withdraws the auxiliary frame SUB-F. This is an example of how the length has been adjusted.

The controller 260 may obtain the deviation length L1 at which the body of the user 1 is sensed based on at least one detection sensor included in the surface of the auxiliary frame SUB-F.

The departure length L1 may be equal to or smaller than the lead-out length L of the frame.

At this time, the control unit 260 may adjust the extension length L of the auxiliary frame SUB-F according to the separation length L1 based on the slide unit SL.

When the withdrawal length L of the auxiliary frame SUB-F is adjusted according to the separation length L1, the control unit 260 controls the stored auxiliary side rail SUB-R as shown in FIG. 6(c). The storage state of the can be released and lifted in the upper direction. (S307)

In this way, in another embodiment, due to a predetermined load or obstacle caused by a pressure applied as a part of the body is placed on at least some of the side rails of the plurality of side rails 120, it can be converted into an upward motion. If not, the control unit 260 may drive the auxiliary frame SUB-F corresponding to the side rail that has not been switched to the lifting operation, that is, located below the corresponding side rail among the plurality of auxiliary frames SUB-F. . According to various embodiments, the control unit 260, when a part of the user's body deviates from the medical bed 100, withdraws the auxiliary frame SUB-F by the amount of deviation and lifts the auxiliary side rail SUB-R. Thus, the user's risk of falling can be prevented.

Meanwhile, in another embodiment, the control unit 260 may output a feedback signal by determining the user's risk of falling according to the elevation state of each of the plurality of side rails 120-1 to 120-6.

Each of the plurality of side rails 120-1 to 120-6 may not be able to perform a lifting operation for various reasons, and any side rail among the plurality of side rails 120-1 to 120-6 is in a lifting or lowering state. Depending on the perception, the user's risk of falling may be determined.

In this case, even when the side rail is raised or lowered in the same state, the user's fall risk may be different according to the user's height.

To this end, in another embodiment, the controller 260 may detect height information of the user from the acquired pressure measurement data.

In detail, the controller 260 may detect height information of the user included in the obtained pressure measurement data and measured based on the section in which the pressure is sensed.

Subsequently, in another embodiment, the control unit 260 may obtain elevation state data.

In another embodiment, the elevation state data refers to information obtained by the control unit 260 ascertaining the elevation and descent states of each of the plurality of side rails 120-1 to 120-6.

If only the first side rail 120-1 to the third side rail 120-3 shown with reference to FIG. 1 are taken as an example, the controller 260 may perform eight cases according to the elevation state of each side rail. Since the number exists, a total of 8 elevation state data can be acquired.

In detail, the controller 260 provides 1) first elevation state data in which all of the first side rails 120-1 to 3 side rails 120-3 are in an elevation state, 2) the first side rail 120-1 ) is the lowering state, the second and third side rails 120-2 and 120-3 are the second lifting state data in the lifting state, 3) the second side rail 120-2 is the lowering state, and the first and second side rails 120-2 are in the lowering state. 3 The third side rails 120-1 and 120-3 are in a lifting state, the third lifting state data, 4) The third side rails 120-3 are in a lowering state, and the first and second side rails 120-1 and 120 -2) is the fourth elevation state data in the elevation state, 5) the first and second side rails 120-1 and 120-2 are in the descent state, and the third side rail 120-3 is in the elevation state; Elevation state data, 6) sixth elevation state data in which the first and third side rails 120-1 and 120-3 are in a descending state and the second side rail 120-2 is in an elevated state, 7) the second and Seventh elevation state data in which the third side rails 120-2 and 120-3 are in a lowered state and the first side rail 120-1 in an elevated state, 8) the first side rails 120-1 to the third One of the eighth elevation state data in which all of the side rails 120-3 are in a descending state may be obtained.

Next, the controller 260 may analyze the user's fall risk (eg, percentage (%)) based on the obtained height information and the lifting state data.

Taking the above example again, assuming that the obtained elevation state data is the third elevation state, the fall risk of user B with a height of 150 cm may be higher than that of user A with a height of 180 cm. This is because if you are short, you are more likely to get out of the gap between the side rails and fall.

Also, assuming that the obtained elevation state data is the fourth elevation state, the fall risk of user A with a height of 180 cm may be higher than that of user B with a height of 150 cm. This is because if the height is small, the entire kidney can be protected only with the raised side rail.

In general, as the height decreases, the user's risk of falling may increase, and the lifting state data is the first lifting state data < the second, third, and fourth lifting state data < the fifth, sixth, and seventh lifting state data < The user's fall risk may increase in order of the eighth elevation state data.

Based on the analyzed user fall risk, in another embodiment, the controller 260 may set a predetermined mode.

For example, the controller 260 may set a safe mode when the analyzed user fall risk is 20% or less.

Also, for example, the controller 260 may set a risk mode when the analyzed user fall risk is 70% or more.

At this time, when the set mode is a risk mode, in another embodiment, the controller 260 may output a feedback signal.

As for the feedback signal, the above-described content in S104 applies mutatis mutandis, and as the feedback signal is output, the control unit 260 conveys the patient's risk of falling to the patient, the patient's guardian, and hospital personnel so that they can take appropriate measures. can

Referring back to (b) of FIG. 8 , in various embodiments, the auxiliary unit SUB may further include a plurality of lifting units SUB-U. The lifting unit SUB-U may be accommodated inside the auxiliary frame SUB-F and may operate upward in response to a control command signal. The plurality of lift units SUB-U are sequentially positioned from right to left, and each of them may move up or down independently of each other. The control unit 260 may lift and drive an elevating portion among the plurality of elevating portions SUB-U based on the length information of the auxiliary frame SUB-F drawn from the frame F.

A plurality of elevating parts (SUB-U) may rise to a height that is the same line as the upper surface of the bed mattress (m).

As the plurality of elevating units SUB-U rises, the area of the mattress is expanded so that the user's body separated from the bed mattress m can be stably supported.

As described above, the medical bed for controlling the side rails according to the embodiment of the present invention has an effect of preventing the user from falling more accurately by determining the user's physical condition and changing the side rail control method according to each user's physical condition. .

In addition, the medical bed controlling the side rails according to an embodiment of the present invention includes a plurality of side rails that operate individually/automatically, so that the user can use the side rails in a position that is easy to operate, so that the user can use the side rails It has the effect of relieving the inconvenience of moving to the location.

In addition, the medical bed for controlling the side rails according to an embodiment of the present invention includes a configuration that replaces the role of the side rails, thereby reducing the rate of fall accidents that may occur in the case of non-operation / malfunction of the side rails. there is.

In addition, the medical bed for controlling the side rails according to an embodiment of the present invention measures the risk level for each user according to the lifting state of the side rails and outputs a feedback signal according to the risk level, thereby preventing the user from falling. there is.

However, the effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood from the description below.

Embodiments according to the present invention described above may be implemented in the form of program instructions that can be executed through various computer components and recorded on a computer-readable recording medium. The computer readable recording medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the computer-readable recording medium may be specially designed and configured for the present invention, or may be known and usable to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical recording media such as CD-ROMs and DVDs, and magneto-optical media such as floptical disks. medium), and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter or the like as well as machine language codes generated by a compiler. A hardware device may be modified with one or more software modules to perform processing according to the present invention and vice versa.

Specific implementations described in the present invention are examples and do not limit the scope of the present invention in any way. For brevity of the specification, description of conventional electronic components, control systems, software, and other functional aspects of the systems may be omitted. In addition, the connection of lines or connecting members between the components shown in the drawings are examples of functional connections and / or physical or circuit connections, which can be replaced in actual devices or additional various functional connections, physical connection, or circuit connections. In addition, if there is no specific reference such as “essential” or “important”, it may not be a component necessarily required for the application of the present invention.

In addition, the detailed description of the present invention described has been described with reference to preferred embodiments of the present invention, but those skilled in the art or those having ordinary knowledge in the art will find the spirit of the present invention described in the claims to be described later. And it will be understood that the present invention can be variously modified and changed without departing from the technical scope. Therefore, the technical scope of the present invention is not limited to the contents described in the detailed description of the specification, but should be defined by the claims.

Claims (8)

Bed Mattress;
a frame for storing and fixing the bed mattress;
a plurality of side rails installed along the edge of the frame and accommodated into the frame in a descending motion, or pulled out from the frame in an upward motion, and capable of independently lifting or lowering;
a weight sensor for measuring pressure in each of a plurality of sections divided on the frame; and
A control unit for estimating the user's posture based on the detection information of the weight sensor and controlling a lifting or lowering operation of at least some of the side rails among the plurality of side rails.
A medical bed that controls the side rails by estimating the patient's posture. According to claim 1,
The control unit,
Monitoring the pressure detected in each of the plurality of sections for a predetermined time to set a body classification standard,
Setting zone information that divides the upper surface of the bed mattress into a plurality of zones around the sections in which pressure is detected according to the body classification criterion,
Obtaining user posture data based on pressure information detected in the plurality of zones according to the zone information;
Controlling the lifting or lowering operation of the side rail based on the acquired user posture data
A medical bed that controls the side rails by estimating the patient's posture. According to claim 2,
The plurality of zones include a first zone of an upper region of the upper surface of the bed mattress, a third zone of a lower region, and a third zone between the first and second zones,
The user posture data,
When a pressure exceeding a preset value is detected in the first to third zones for a preset time, the first posture data estimated as a sleeping position and a preset value for a preset time in two of the first to third zones When a pressure exceeding a preset value is detected, the second posture data estimated as a sitting posture and a change in pressure exceeding a preset value for a preset time in two of the first to third zones are detected, estimated as a desired posture to go out Including third posture data
A medical bed that controls the side rails by estimating the patient's posture. According to claim 3,
The control unit,
When the user posture data is first posture data or second posture data, determining whether the side rail is raised or lowered;
Outputting a predetermined feedback signal when the side rail is in a descending state;
Performing an automatic lifting process of lifting the side rail
A medical bed that controls the side rails by estimating the patient's posture. According to claim 1,
The side rail includes a plurality of side rails that can be raised or lowered independently of each other,
A plurality of auxiliary parts installed at the lower side of the frame corresponding to the positions of each of the plurality of side rails; further comprising
A medical bed that controls the side rails by estimating the patient's posture. According to claim 5,
The control unit,
Determining whether a side rail in a descending state among the plurality of side rails can be switched to an ascending state;
Expanding the frame by withdrawing the auxiliary part corresponding to the side rail that cannot be switched to the raised state
A medical bed that controls the side rails by estimating the patient's posture. According to claim 6,
In each of the plurality of auxiliary units, the control unit detects a separation length of the body separated from the medical bed,
The controller extends the frame by adjusting the withdrawal length of the auxiliary part based on the separation length to withdraw the auxiliary part and driving the auxiliary side rail of the auxiliary part drawn out upward.
A medical bed that controls the side rails by estimating the patient's posture. According to claim 7,
Each of the plurality of auxiliary parts includes a plurality of lifting parts,
The control unit raises at least some of the lifting parts of the plurality of lifting parts according to the withdrawal length of the auxiliary part to be flush with the upper surface of the bed mattress.
A medical bed that controls the side rails by estimating the patient's posture.