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 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;
accessing a second patient position with regard to the pixel attribute at each of the plurality of vertical positions within a second image frame;
detecting a patient repositioning event between the second patient position and the first patient position;
associating information related to the patient repositioning event with the first image frame;
retaining the first image frame and the associated information; 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
39 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 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; accessing a second patient position with regard to the pixel attribute at each of the plurality of vertical positions within a second image frame; detecting a patient repositioning event between the second patient position and the first patient position; associating information related to the patient repositioning event with the first image frame; retaining the first image frame and the associated information; 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)
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34. 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 patient position time interval; receiving a first image frame from a surveillance camera, said image frame containing the patient in a current position; monitoring an elapsed time in the current patient position; identifying the current patient position in the decubitus ulcer patient repositioning schedule; comparing the elapsed time and the patient position time interval from the decubitus ulcer patient repositioning schedule corresponding to the current patient position; detecting a patient repositioning event based on the comparison; associating information related to the patient repositioning event with the first image frame; retaining the first image frame and the associated information; and issuing an alert for the patient repositioning event. - View Dependent Claims (35, 36, 37, 38, 39)
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Specification