Technical Brief

Design Evaluation of an Automated Bed for Early Detection and Prevention of Decubitus Ulcers in Nonambulatory Patients1

[+] Author and Article Information
Sharmila Nageswaran, Rekha Vijayakumar

School of Bio Sciences and Technology,
VIT University,
Vellore 632014, India

Sudesh Sivarasu

MRC/MIRU—Division of Biomedical Engineering,
Department of Human Biology,
Faculty of Health Sciences,
University of Cape Town,
Cape Town 7925, South Africa
e-mail: sudesh.sivarasu@uct.ac.za

Accepted and presented at the Design of Medical Devices Conference (DMD2014), Minneapolis, MN, April 7–10, 2014.DOI: 10.1115/1.4027025

Manuscript received February 21, 2014; final manuscript received March 3, 2014; published online April 28, 2014. Editor: Arthur G. Erdman.

J. Med. Devices 8(2), 020925 (Apr 28, 2014) (2 pages) Paper No: MED-14-1054; doi: 10.1115/1.4027025 History: Received February 21, 2014; Revised March 03, 2014

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Copyright © 2014 by ASME
Topics: Pressure , Design , Sensors
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Grahic Jump Location
Fig. 2

(a) No pressure is sensed; (b) pressure is sensed and inner ring deflated (blue balloon); (c) more pressure is sensed and outer ring inflated (orange balloon)

Grahic Jump Location
Fig. 1

Schema of working prototype: 1, patient; 2, PVR; 3, sensor; 4, outer inflatable unit; 5, inner deflatable unit; 6, MCU; 7, solenoid valve 2 working when voltage is >3 V; 8, solenoid valve 1 working when voltage is >2 V, 3 and 6—EU, 4 and 5—PCS; 9, MAU




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