Granted Patent B2

US 12,329,536 · App. 17/368,479 · Granted Jun 17, 2025

Inventors: Barrett J. Larson (Palo Alto, CA); Mark V. Weckwerth (Pleasanton, CA); Charles Matthew Peterson Hammond (Pleasant Hill, CA); Daniel Z. Shen (Palo Alto, CA)

Assignee: LEAF HEALTHCARE, INC.

A61B5/447A41B9/00A61B5/002A61B5/01A61B5/0205A61B5/02055A61B5/024A61B5/026A61B5/1113A61B5/1114A61B5/1115A61B5/1118A61B5/1121A61B5/4833A61B5/4866A61B5/4884A61B5/6801A61B5/6823A61B5/6843A61B5/6891A61B5/6892A61B5/721A61B5/7246A61B5/7275A61B5/7282A61B5/746A61G7/057A61G7/05769G01P21/00G16H20/00G16H20/40G16H40/63G16H40/67A61B5/0261A61B5/0531A61B5/0816A61B5/1116A61B5/113A61B5/14542A61B5/14551A61B5/363A61B5/6804A61B7/00A61B2560/0223A61B2562/02A61B2562/0214A61B2562/0219A61B2562/0223A61B2562/0247A61B2562/0261A61B2562/029A61B2562/043A61B2562/046A61G2203/42A61G2203/46G01P15/18

Abstract

Claims (35)

1. A method for managing a turn protocol for a person,

the method comprising:

providing the turn protocol for the person supported at least temporarily by a support surface, wherein the turn protocol defines a pressurization measure representing a pressurization of a particular body region and at least one pressurization threshold value,

receiving, at a processor, sensor signals from one or more sensors,

identifying, by the processor, based on the received sensor signals, when the person is in a pressurization position corresponding with the particular body region,

monitoring the pressurization measure over time, including (a) increasing the pressurization measure as a function of a first pressurization period spent on the support surface and in the pressurization position and (b) decreasing the pressurization measure, at a first depressurization rate, as a proportional function of a first depressurization period spent on the support surface but out of the pressurization position;

comparing the monitored pressurization measure to the at least one pressurization threshold value over time;

outputting turn protocol alerts based on the comparison;

detecting, based on the received sensor signals, the person exiting the support surface and subsequently returning to the support surface, defining a second depressurization period spent off the support surface; and

decreasing the pressurization measure, at a second depressurization rate, as a proportional function of the second depressurization period spent off the support surface;

wherein the second depressurization rate is greater than the first depressurization rate.

2. The method of claim 1 , further comprising:

automatically suspending the turn protocol alerts in response to the detection that the person has exited the support surface; and

automatically resuming the turn protocol alerts in response to the detection that the person has returned to the support surface.

3. The method of claim 1 , wherein the pressurization measure representing the pressurization of the particular body region comprises a pressurization time representing a duration spent in the pressurization position.

4. The method of claim 1 , wherein the step of receiving the sensor signals from the one or more sensors comprises receiving the sensor signals from the one or more sensors provided in a sensor device affixed to the person or carried by an article worn by the person.

5. The method of claim 1 , wherein the step of receiving the sensor signals from the one or more sensors comprises receiving acceleration data from one or more accelerometers.

6. A system for automated monitoring of a person, comprising:

a wearable sensor device body configured to be secured to the person or to an article worn by the person;

at least one sensor provided in the wearable sensor device body and configured to generate sensor signals regarding an orientation of the person; and

a processor configured to:

receive the sensor signals from the at least one sensor,

identify, based on the received sensor signals, when the person is in a pressurization position corresponding with a particular body region,

monitor a pressurization measure over time, including (a) increasing the pressurization measure as a function of a first pressurization period spent on the support surface and in the pressurization position and (b) decreasing the pressurization measure, at a first depressurization rate, as a proportional function of a first depressurization period spent on the support surface but out of the pressurization position;

compare the monitored pressurization measure to at least one pressurization threshold value over time;

output turn protocol alerts based on the comparison;

detect, based on the received sensor signals, the person exiting the support surface and subsequently returning to the support surface, defining a second depressurization period spent off the support surface; and

decrease the pressurization measure, at a second depressurization rate, as a proportional function of the second depressurization period spent off the support surface;

wherein the second depressurization rate is greater than the first depressurization rate.

7. The system of claim 6 , wherein the processor is provided in the wearable sensor device body.

8. The system of claim 6 , wherein the processor is remote from the wearable sensor device body and configured to receive the sensor signals from the at least one sensor via wireless communications.

9. The system of claim 6 , wherein the processor is configured to:

automatically suspend the turn protocol alerts in response to the detection that the person has exited the support surface; and

resume the turn protocol alerts in response to the detection that the person has returned to the support surface.

10. The system of claim 6 , wherein the pressurization measure comprises a pressurization time representing a duration spent in the pressurization position.

Assignments (1)

Continuity (17)

References Cited (377)

Cited By (1)

US 1,128,718