System and method for using a video monitoring system to prevent and manage decubitus ulcers in patients
First Claim
1. A method for using a video monitoring system to prevent and manage decubitus ulcers in patients, comprising:
- receiving a first image frame containing the patient on a support structure from a video camera;
describing a first patient position with regard to a pixel attribute at each of a plurality of vertical positions within the first image frame, the plurality of vertical positions corresponding to different parts of the patient;
receiving a second image frame containing the patient from the video camera, the second image generated by the video camera after the first image;
describing a second patient position with regard to the pixel attribute at each of the plurality of vertical positions within the second image frame;
detecting a patient repositioning event by respectively comparing the pixel attribute at each of the plurality of vertical positions of the second patient position with the pixel attribute at each of the plurality of vertical positions of the first patient position; and
issuing an alert for the patient repositioning event.
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Accused Products
Abstract
A video monitoring system captures image frames of a patient in various positions. The captured image frames are analyzed by the system for changes in a patient'"'"'s position or movement, frames in which the system detects one or both of patient movement and repositioning are retained. The system analyzes an area of interest within each image frame that corresponds to an area in the camera'"'"'s view field with the patient. Sequential image frames are compared for motion, only frames without motion, where the patient is still, are analyzed. Analysis techniques include selecting a plurality of vertical positions in the area of interest, each vertical position corresponding to a part of the patient body indicative of the patient'"'"'s position, horizontally scanning values along the horizontal pixel row at each vertical position in the area of interest, finding an average value for each vertical position and identifying a patient interval of the horizontal pixel row having pixel values different from the average and a representative horizontal position of the patient interval for each vertical interval. Then, comparing those median horizontal positions from a current image frame to the representative horizontal positions from a previous image frame to determine a change in the patient'"'"'s position.
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Citations
43 Claims
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1. A method for using a video monitoring system to prevent and manage decubitus ulcers in patients, comprising:
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receiving a first image frame containing the patient on a support structure from a video camera; describing a first patient position with regard to a pixel attribute at each of a plurality of vertical positions within the first image frame, the plurality of vertical positions corresponding to different parts of the patient; receiving a second image frame containing the patient from the video camera, the second image generated by the video camera after the first image; describing a second patient position with regard to the pixel attribute at each of the plurality of vertical positions within the second image frame; detecting a patient repositioning event by respectively comparing the pixel attribute at each of the plurality of vertical positions of the second patient position with the pixel attribute at each of the plurality of vertical positions of the first patient position; and issuing an alert for the patient repositioning event. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method for using a video monitoring system to prevent and manage decubitus ulcers in patients, comprising:
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receiving a decubitus ulcer patient repositioning schedule at the video monitoring system, said patient repositioning schedule comprises a plurality of patient positions, each of the plurality of patient positions corresponding to a patient position time interval of a plurality of patient position time intervals, the plurality of patient positions respectively corresponding to a plurality of different body orientations on a support surface; receiving a plurality of image frames from a surveillance camera at the video monitoring system, each of the plurality of image frames containing the patient on a support structure; determining a first patient position of the patient with the video monitoring system based on a plurality of vertical positions corresponding to different parts of the patient in a first image frame of the plurality of image frames, the first patient position corresponding to one of the plurality of different body orientations and to one of the plurality of patient position time intervals; monitoring the time in which the patient remains in the first patient position with the video monitoring system based on the plurality of vertical positions of the patient in one or more image frames of the plurality of image frames received after the first image frame is received; issuing a first alert with the video monitoring system based on the time in which the patient remains in the first patient position exceeding the patient position time interval that corresponds to the first patient position; detecting a patient repositioning event with the video monitoring system based on the plurality of vertical positions of the patient in at least one image frame of the plurality of image frames received after the first frame is received and indicating that the patient has moved; determining whether the patient repositioning event is in compliance with the patient repositioning schedule with the video monitoring system; and issuing a second alert with the video monitoring system based on the patient repositioning event not being in compliance with the patient repositioning schedule. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42)
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43. A system for video monitoring to prevent and manage decubitus ulcers in patients, the system comprising:
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a video camera configured to generate a plurality of image frames of a patient on a support structure; an interface; and a processor connected with memory and configured to; receive and store a decubitus ulcer patient repositioning schedule, the patient repositioning schedule comprising a plurality of patient positions, each of the plurality of patient positions corresponding to a patient position time interval of a plurality of patient position time intervals, the plurality of patient positions respectively corresponding to a plurality of different body orientations on a support surface; receive the plurality of image frames from the video camera; determine a first patient position of the patient on the supporting structure based on a plurality of vertical positions corresponding to different parts of the patient in a first image frame of the plurality of image frames, the first patient position corresponding to one of the plurality of different body orientations and to one of the plurality of patient position time intervals; monitor the time in which the patient remains in the first patient position based on the plurality of vertical positions of the patient in one or more image frames of the plurality of image frames received after the first frame is received; issue a first alert with the interface based on the time in which the patient remains in the first patient position exceeding the patient position time interval that corresponds to the first patient position; detect a patient repositioning event based on the plurality of vertical positions of the patient in at least one image frame of the plurality of image frames received after the first frame is received and indicating that the patient has moved; determine whether the patient repositioning event is in compliance with the patient repositioning schedule; and issue a second alert with the interface based on the patient repositioning event not being in compliance with the patient repositioning schedule.
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Specification