Patent ID: 11931167
Assignee: CERNER INNOVATION, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A smart sensor for detecting conditions likely to result in pressure injury to a human patient, comprising:
a multi-layer support surface comprising:
a contact layer comprising a seat cushion configured to support a sitting person or a mattress cushion configured to support a laying person,
a pressure-measuring layer subjacent to the contact layer, the pressure-measuring layer comprising:
an inflatable air bladder configured to hold a volume of air, and
a pressure sensor in contact with the volume of air, and
a substrate layer having a density and stiffness configured to mechanically isolate the pressure-measuring layer from ambient vibrations transmitted through a floor, furniture, or other intervening articles upon which the multi-layer support surface is mounted;

a processor communicably coupled with the pressure sensor; and
a computer-readable data storage device storing program instructions that, when executed by the processor, control the smart sensor to:
acquire a plurality of time series of pressure measurements, corresponding respectively to a plurality of time periods, from the inflatable air bladder using the pressure sensor, wherein the plurality of time periods comprise substantially consecutive intervals,
determine a subset of time periods, of the plurality of time periods, that are associated with pressure injuries based on the time series of pressure measurements corresponding to individual time periods of the plurality of time periods, and
determine whether an accumulation of the subset of time periods associated with pressure injuries exceeds a threshold value; and
responsive to determining that the accumulation of the subset of time periods associated with pressure injuries exceeds a threshold value, presenting a notification.