US 12,336,809 B2
Contactless patient motion monitoring
Jennifer Meddings, Ann Arbor, MI (US); James A. Ashton-Miller, Ann Arbor, MI (US); Shiyu Wang, Seattle, WA (US); Jessica Marie Ameling, Ann Arbor, MI (US); Shuai Xiong, Shanghai City (CN); and Zizheng Zhang, Fort Lee, NJ (US)
Assigned to THE REGENTS OF THE UNIVERSITY OF MICHIGAN, Ann Arbor, MI (US)
Appl. No. 17/630,367
Filed by THE REGENTS OF THE UNIVERSITY OF MICHIGAN, Ann Arbor, MI (US)
PCT Filed Jul. 24, 2020, PCT No. PCT/US2020/043428
§ 371(c)(1), (2) Date Jan. 26, 2022,
PCT Pub. No. WO2021/021609, PCT Pub. Date Feb. 4, 2021.
Claims priority of provisional application 62/879,021, filed on Jul. 26, 2019.
Prior Publication US 2022/0322971 A1, Oct. 13, 2022
Int. Cl. A61B 5/11 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/1114 (2013.01) [A61B 5/1115 (2013.01); A61B 5/1116 (2013.01); A61B 5/4094 (2013.01); A61B 5/6892 (2013.01); A61B 5/7405 (2013.01); A61B 5/742 (2013.01); A61B 5/746 (2013.01); A61B 2562/0219 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A system for real-time monitoring of movement of a person on a mattress, the mattress having top and bottom surfaces connected by peripheral surfaces, the peripheral surfaces including first and second side surfaces and first and second end surfaces, and the system comprising:
a plurality of sensor devices positioned on one or more of the peripheral surfaces and configured to sense lateral accelerations of the one or more peripheral surfaces in directions orthogonal to the one or more peripheral surfaces, wherein the plurality of sensor devices includes at least (i) a first sensor device positioned on the first side surface and closer to the first end surface than to the second end surface and (ii) a second sensor device positioned on the first side surface and closer to the second end surface than to the first end surface; and
a processing subsystem communicatively coupled to the plurality of sensor devices and configured to
receive signals indicative of the sensed lateral accelerations of the one or more peripheral surfaces from the plurality of sensor devices,
determine, by processing at least the received signals, whether at least the sensed lateral accelerations of the one or more peripheral surfaces correspond to one or more alert conditions, and
selectively cause, or not cause, one or more visual and/or audio alert indicators to be generated based on whether at least the sensed lateral accelerations of the one or more peripheral surfaces correspond to the one or more alert conditions.