Video monitoring system

• US 10,368,039 B2
• Filed: 03/20/2018
• Issued: 07/30/2019
• Est. Priority Date: 09/23/2010
• Status: Active Grant

• Current Assignee: Stryker Corporation
• Original Assignee: Stryker Corporation
• Inventors: Derenne, Richard A., DeLuca, Richard Thomas, Wroblewski, Jason James, Dhall, Sanjay, Duan, Xiyu, Lowalekar, Vishal P.
• Primary Examiner(s): Le, Peter D
• Application Number:
  US15/926,275
• Publication Number:
  US 20180227547A1
• Time in Patent Office: 497 Days
• Field of Search: None
• CPC Class Codes: A61B 2505/03 Intensive care
• CPC Class Codes: A61B 5/0013 Medical image data A61B1/00011, A61B6/56, A61B8/56 take precedence
• CPC Class Codes: A61B 5/002 Monitoring the patient using a local or closed circuit, e.g. in a room or building A61B5/0017 takes precedence
• CPC Class Codes: A61B 5/0036 including treatment, e.g., using an implantable medical device, ablating, ventilating
• CPC Class Codes: A61B 5/1113 Local tracking of patients, e.g. in a hospital or private home
• CPC Class Codes: A61B 5/1115 Monitoring leaving of a patient support, e.g. a bed or a wheelchair
• CPC Class Codes: A61B 5/1117 Fall detection
• CPC Class Codes: A61B 5/112 Gait analysis
• CPC Class Codes: A61B 5/1123 Discriminating type of movement, e.g. walking or running A61B5/1116, A61B5/112 take precedence
• CPC Class Codes: A61B 5/1128 using image analysis A61B5/1127 takes precedence
• CPC Class Codes: A61B 5/6889 Rooms
• CPC Class Codes: A61B 5/6892 Mats
• CPC Class Codes: A61B 5/7445 Display arrangements, e.g. multiple display units
• CPC Class Codes: A61B 5/7475 User input or interface means, e.g. keyboard, pointing device, joystick
• CPC Class Codes: G01B 11/026 by measuring distance between sensor and object G01B11/0608 takes precedence
• CPC Class Codes: G06Q 50/22 Social work or social welfare, e.g. community support activities or counselling services
• CPC Class Codes: G06V 20/52 Surveillance or monitoring of activities, e.g. for recognising suspicious objects recognising microscopic objects G06V20/69
• CPC Class Codes: G06V 40/20 Movements or behaviour, e.g. gesture recognition recognition of facial expressions G06V40/16
• CPC Class Codes: G08B 21/043 detecting an emergency event, e.g. a fall
• CPC Class Codes: G08B 21/0476 Cameras to detect unsafe condition, e.g. video cameras
• CPC Class Codes: G08B 21/22 : responsive to presence or absence of persons
• CPC Class Codes: G08B 21/245 : Reminder of hygiene compliance policies, e.g. of washing hands
• CPC Class Codes: G16H 40/20 : for the management or administration of healthcare resources or facilities, e.g. managing hospital staff or surgery rooms
• CPC Class Codes: G16H 40/67 : for remote operation
• CPC Class Codes: H04N 23/23 : from thermal infrared radiation
• CPC Class Codes: H04N 5/33 : Transforming infrared radiation cameras or camera modules for generating image signals from infrared radiation H04N23/20; circuitry of SSIS for transforming infrared radiation into image signals H04N25/20
• CPC Class Codes: H04N 7/185 : from a mobile camera, e.g. for remote control

Abstract

An asset tracking system includes a camera adapted to capture images and output signals representative of the images. The camera may include one or more depth sensors that detect distances between the depth sensor and objects positioned within the field of view of the one or more cameras. A computer device processes the image signals and or depth signals from cameras and determines any one or more of the following: (a) whether a patient care protocol has been properly followed; (b) what condition a patient is in; (c) whether an infection control protocol has been properly followed; and (d) whether steps have been taken to reduce the risk of a patient from falling. Alerts may be issued if any conditions of importance are detected.

Claims

1. A bed system for a patient care facility comprising:

a bed comprising a base, a plurality of wheels coupled to the base, a brake for braking the wheels, and a patient support surface supported on the base and configured to support a patient thereon;

a camera positioned within a room of the patient care facility and configured to capture images of a location within the room and output signals representative of the images;

a database containing shape information regarding a shape of the bed and identity information regarding identities of staff of the patient care facility; and

a computer device in communication with the camera, the database, and the bed, the computer device configured to use the signals and the shape information to determine when the bed is moved into the location, to use the signals and the identity information to identify a staff member accompanying the bed when the bed is moved into the location, to use the signals and the identity information to determine when the staff member departs from the room, and to automatically send a signal to the bed causing the bed to activate the brake on the bed if the staff member does not activate the brake.

2. The bed system of claim 1 wherein the computer device is further configured to generate a skeleton of the staff member.

3. The bed system of claim 2 wherein the camera includes a depth sensing device configured to detect a distance between the depth sensing device and objects positioned within a field of view of the camera, and the computer device is further configured to determine a three dimensional position of a plurality of points of the skeleton.

4. The bed system of claim 3 wherein the plurality of points of the skeleton correspond to at least two of the following locations of the staff member'"'"'s body:

a head, neck, shoulders, elbows, wrists, hands, trunk, hips, knees, ankles, and feet.

5. The bed system of claim 1 wherein the identity information includes information regarding a badge worn by the staff member.

6. The bed system of claim 1 wherein the database further includes nurse call cable information regarding a nurse call cable used with the bed, and wherein the computer device is further configured to use the nurse call cable information and signals to determine if the nurse call cable is plugged into a nurse call cable outlet.

7. The bed system of claim 6 wherein the computer device issues an alert if the nurse call cable is not plugged into a nurse call cable outlet prior to the staff member departing the room.

8. The bed system of claim 1 wherein the bed further comprises a bed exit signaling system in communication with the computer device, and wherein the computer device is further configured to send a pause signal to the bed causing the bed to pause the exit signaling device when the computer device detects the staff member in the room.

9. The bed system of claim 8 wherein the computer device is further configured to send a signal to the bed causing the bed to stop pausing the exit signaling device when the computer device detects the staff member departing the room.

10. The bed system of claim 1 wherein the computer device is a server coupled to a computer network of the patient care facility.

11. A bed system for a patient care facility comprising:

a bed comprising a base, a patient support surface supported on the base and configured to support a patient thereon, and an exit signaling device configured to issue an alert when a patient exits from the patient support surface;

a camera positioned within a room of the patient care facility and configured to capture images of a location within the room and output signals representative of the images;

a database containing identity information regarding identities of staff of the patient care facility; and

a computer device in communication with the camera, the database, and the bed, the computer device configured to use the signals and the identity information to identify a staff member when the staff member is positioned within the room, the computer device further configured to send a message to the bed causing the bed to pause the exit signaling device when the staff member is positioned within the room.

12. The bed system of claim 11 wherein the computer device is further configured to use the signals and identity information to determine when the staff member departs from the room and to send a message to the bed to stop the pause of the exit signaling device.

13. The bed system of claim 11 wherein the camera includes a depth sensing device configured to detect a distance between the depth sensing device and objects positioned within a field of view of the camera, and wherein the computer device is further configured to generate a skeleton of the staff member and to determine a three dimensional position of a plurality of points of the skeleton, the plurality of points corresponding to at least two of the following locations of the staff member'"'"'s body:

a head, neck, shoulders, elbows, wrists, hands, trunk, hips, knees, angles, and feet.

14. The bed system of claim 11 wherein the identity information includes information regarding a badge worn by the staff member.

15. The bed system of claim 11 wherein the identity information includes characteristics of the staff member'"'"'s face.

16. The bed system of claim 11 wherein the identity information includes characteristics of the staff member'"'"'s attire.

17. The bed system of claim 11 wherein the computer device is further configured to identify a location of the patient'"'"'s head in the images, to automatically blur that location in the images, and to store the blurred head images without storing any unblurred images of the patient'"'"'s head.

18. The bed system of claim 11 wherein the computer device is a server coupled to a computer network of the patient care facility.

19. The bed system of claim 11 wherein the camera is a thermal camera and the images are thermal images.

20. The bed system of claim 11 wherein the database include information about at least one of a shape, color, and size of the bed, and the computer device is further configured to determine from the signals a current angle of a head portion of a bed and initiate an alert to the staff member if the current angle of the head portion of the bed is less than a predetermined value.