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Patient position detection system

  • US 10,307,111 B2
  • Filed: 10/10/2014
  • Issued: 06/04/2019
  • Est. Priority Date: 02/09/2012
  • Status: Active Grant
First Claim
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1. A system for triggering a medical bedsore warning alarm, the system comprising:

  • a wireless monitor configured to couple to an armband attached to a patient occupying a patient bed, the wireless monitor configured to receive physiological information from a physiological sensor coupled with the patient and to wirelessly transmit physiological data reflective of the physiological information to a bedside monitor;

    a removable battery that powers the wireless monitor, the removable battery configured to connect with the wireless monitor and configured to be removed from the wireless monitor and then docked with the bedside monitor in order to recharge;

    a wireless position sensor disposed in the wireless monitor or in the armband such that the wireless position sensor is configured to be coupled with the patient; and

    a patient movement detector comprising one or more hardware processors configured to;

    wirelessly receive, from the wireless position sensor, movement data indicative of movement or lack of movement of the patient during a period of time, wherein the wireless position sensor includes at least one of;

    an accelerometer, a gyroscope, or a compass;

    update the movement data to produce updated movement data based on triangulation data received from a plurality of wireless access points;

    determine, based at least in part on the updated movement data, that a portion of the patient has not moved or has moved less than a threshold amount during the period of time;

    receive, from an optical-based sensor, a baseline optical-based profile of the patient;

    receive additional optical-based profiles of the patient from the optical-based sensor, wherein the additional optical-based profiles are captured during the period of time;

    determine whether a degree of change in profile data between the additional optical-based profiles and the baseline optical-based profile has not met or exceeded a threshold degree of change; and

    transmit, over a network, an indication of a bedsore warning alarm, wherein said transmitting is responsive to a combination of both of the following;

    determining that the degree of change in the profile data has not met or exceeded the threshold degree of change, and determining that the portion of the patient has not moved or has moved less than a threshold amount during the period of time based at least in part on the updated movement data received from the wireless position sensor.

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