SYSTEM AND METHOD FOR PREDICTING PATIENT FALLS

摘要

A patient fall prediction system receives video image frames from a surveillance camera positioned in a patient's room and analyses the video image frames for movement that may be a precursor to a patient fall. In set up phase, the viewpoint of the camera is directed at a risk area associated with patient falls, beds, chairs, wheelchairs, etc. A risk area is defined graphically in the viewport. The patient fall prediction system generates a plurality of concurrent motion detection zones that are situated proximate to the graphic markings of the risk areas. These motion detection zones are monitored for changes between video image frames that indicate a movement. The pattern of detections is recorded and compared to a fall movement detection signature.

主权项

1. A surveillance system for detecting an elevated fall risk condition, the system comprising:
a surveillance camera configured to generate a plurality of frames showing a surveillance viewport of an area including an elevated patient area having a left edge and a right edge opposite the left edge, the left edge and the right edge associated with an elevated risk of patient falls from the elevated patient area; and a computer system comprising memory and logic circuitry configured to:
monitor for motion in each zone of each of a left set of zones and a right set of zones based on the plurality of frames, the zones of the left set of zones located to the left of the left edge and proximate to the left edge, the zones of the right set of zones located to the right of the right edge and proximate to the right edge, each of the left set of zones and the right set of zones respectively comprising at least an inner zone and an outer zone, the inner zone of the left set of zones extending along the left edge, the inner zone of the left set positioned between the left edge and the outer zone of the first set of zones, the inner zone of the right set of zones extending along the right edge, the inner zone of the right set of zones positioned between the right edge and the outer zone of the right set of zones;detect an outward movement signature associated with high patient fall risk from the elevated patient area, the outward movement signature detected based on motion being detected within the inner zone of either of the left set of zones or the right set of zones before motion is detected in any other zone of the same set;issue a fall alert with the user interface based on the detection of the outward movement signature, the fall alert comprising one or both of a visual indication and an audible indication; anddetect presence of a healthcare professional proximate the area, wherein the computer system is configured to refrain from issuing the fall alert based on the detected presence of the healthcare professional proximate the area.