# US 12,112,541 B2 · Bed system

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- Number: US 12,112,541 B2
- Document ID: US12112541B2
- Status: Granted
- Kind: B2
- Application number: 18/133,720
- Filed: 2023-04-12
- Published: 2023-08-03
- Granted: 2024-10-08
- Earliest claimed: 2020-10-07
- Assignees: Paramount Bed Co., Ltd.
- Applicants: Paramount Bed Co., Ltd.
- Inventors: Mao Yoshida; Takeshi Nagayasu; Yosuke Yamazaki; Junichi Tamura
- Web page: https://patentgrep.com/patent/US12112541B2

## CPC

- G06V 20/52: Surveillance or monitoring of activities, e.g. for recognising suspicious objects (recognising microscopic objects G06V20/69)
- G08B 21/0461: {integrated or attached to an item closely associated with the person but not worn by the person, e.g. chair, walking stick, bed sensor}
- A61B 5/1115: {Monitoring leaving of a patient support, e.g. a bed or a wheelchair}
- A61B 5/1117: {Fall detection}
- A61B 5/1128: {using image analysis (A61B5/1127 takes precedence)}
- A61B 5/7275: {Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor}
- A61G 7/00: Beds specially adapted for nursing; Devices for lifting patients or disabled persons (stretchers with facilities for picking up patients or disabled persons A61G1/003)
- G06T 7/70: Determining position or orientation of objects or cameras (camera calibration G06T7/80)
- G06T 7/73: using feature-based methods
- G06V 40/103: {Static body considered as a whole, e.g. static pedestrian or occupant recognition}
- G06V 40/20: Movements or behaviour, e.g. gesture recognition (recognition of facial expressions G06V40/16)
- G08B 21/0446: {worn on the body to detect changes of posture, e.g. a fall, inclination, acceleration, gait}
- G08B 21/0492: {Sensor dual technology, i.e. two or more technologies collaborate to extract unsafe condition, e.g. video tracking and RFID tracking}
- H04N 7/18: Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N 7/183: {for receiving images from a single remote source}
- A61G 7/0507: {Side-rails}
- A61G 2203/36: for motion
- G06T 2207/30196: Human being; Person
- G06T 2207/30232: Surveillance
- G08B 31/00: Predictive alarm systems characterised by extrapolation or other computation using updated historic data
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00)
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A bed system includes: an imaging device; a bed on which the imaging device is to be installed; and a controller configured to process an image acquired by the imaging device to predict a possibility of overturning of a user, in which, when it is determined that a state of the user is a first state, the controller predicts the possibility of overturning of the user based on a first parameter, when it is determined that the state of the user is a second state, the controller predicts the possibility of overturning of the user based on a second parameter, the first state is a state of the user different from the second state, and the first parameter is different from the second parameter.

## Claims

### Claim 1

A bed system comprising:
a first bed including a first imaging device attached to the first bed;
a second bed including a second imaging device attached to the second bed; and
a controller configured to: detect a motion of a first patient, predict a location which the first patient using the first bed would reach based on the motion of the first patient, specify the second imaging device which is capable of capturing an image of the location, and activate the second imaging device if the controller determines that the first imaging device is not capable of monitoring the first patient based on the location of the first patient and the second imaging device is capable of monitoring the first patient.

### Claim 2 (depends on 1)

The bed system according to claim 1, wherein the controller is configured to specify the scope of monitoring of the first imaging device after determining the location of the first patient.

### Claim 3 (depends on 1)

The bed system according to claim 1, wherein the controller includes a first unit to acquire environment information from the first or second imaging device, a second unit to acquire a posture of the first patient from the first or second imaging device, a third unit to acquire a motion of the first patient the first or second imaging device, a fourth unit to acquire biological information of the first patient from a sensor which is provided on the bed and is different from the first or second imaging device, a fifth unit to acquire disease information of the first patient from a server.

### Claim 4 (depends on 3)

The bed system according to claim 3, wherein the controller is configured to predict a possibility of falling of the first patient in accordance with information acquired from the first and fifth units.

### Claim 5 (depends on 1)

The bed system according to claim 1, wherein the bed includes a bed board, and the first imaging device is installed on upper side of a bed board.

### Claim 6 (depends on 3)

He bed system according to claim 3, wherein the controller is configured to change parameters to be acquired from the first to fifth units based on the location of the first patient, the location indicating whether the first patient is in the bed or not, whether the first patient is sitting on the edge of the bed or not.

### Claim 7 (depends on 6)

The bed system according to claim 6, wherein the controller is configured to acquire information related to whether or not a side rail of the bed is installed or whether a bed board is installed as environment information when the first patient is in the bed.

### Claim 8 (depends on 6)

The bed system according to claim 6, wherein the controller is configured to acquire information related to a state of the castor or whether there is equipment surrounding the bed as environment information when the first patient is standing outside the bed.

### Claim 9 (depends on 6)

The bed system according to claim 6, wherein the controller is configured to acquire information related to a bed height of the bed or whether the sensor is provided on the bed as environment information when the first patient is sitting on the edge of the bed.

### Claim 10

A method for use with a bed system including a first bed including a first imaging device attached to the first bed, a second bed including a second imaging device attached to the second bed, and a controller, the method comprising:
with the controller, detecting a motion of a first patient, predicting a location which the first patient using the first bed would reach based on the motion of the first patient, specifying the second imaging device which is capable of capturing an image of the location, and activating the second imaging device if the controller determines that the first imaging device is not capable of monitoring the first patient based on the location of the first patient and the second imaging device is capable of monitoring the first patient.

### Claim 11 (depends on 10)

The method according to claim 10, further comprising specifying the scope of monitoring of the first imaging device after determining the location of the first patient.

### Claim 12 (depends on 10)

The method according to claim 10, further comprising performing a first unit process of acquiring environment information from the first or second imaging device, a second unit process of acquiring a posture of the first patient from the first or second imaging device, a third unit process of acquiring a motion of the first patient the first or second imaging device, a fourth unit process of acquiring biological information of the first patient from a sensor which is provided on the bed and is different from the first or second imaging device, a fifth unit process of acquiring disease information of the first patient from a server.

### Claim 13 (depends on 12)

The method according to claim 12, further comprising predicting a possibility of falling of the first patient in accordance with information acquired from the first and fifth unit processes.

### Claim 14 (depends on 10)

The method according to claim 10, wherein the bed includes a bed board, and the first imaging device is installed on upper side of a bed board.

### Claim 15 (depends on 12)

The method according to claim 12, further comprising changing parameters to be acquired from the first to fifth unit processes based on the location of the first patient, the location indicating whether the first patient is in the bed or not, or whether the first patient is sitting on the edge of the bed or not.

### Claim 16 (depends on 15)

The method according to claim 15, further comprising acquiring information related to whether or not a side rail of the bed is installed or whether a bed board is installed as environment information when the first patient is in the bed.

### Claim 17 (depends on 15)

The method according to claim 15, further comprising acquiring information related to a state of the castor or whether there is equipment surrounding the bed as environment information when the first patient is standing outside the bed.

### Claim 18 (depends on 15)

The method according to claim 15, further comprising acquiring information related to a bed height of the bed or whether the sensor is provided on the bed as environment information when the first patient is sitting on the edge of the bed.