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Special Section Technical Briefs

Processing and Analysis of Small Intestine Pressure Signal Based on Empirical Mode Decomposition1

[+] Author and Article Information
Pengbo Li, Benjamin S. Terry

Department of Mechanical and Material Engineering,
University of Nebraska–Lincoln,
Lincoln, NE 68588

Vishal Kothari

Department of Surgery,
University of Nebraska College of Medicine,
Omaha, NE 68198

Accepted and presented at The Design of Medical Devices Conference (DMD2015), April 13-16, 2015, Minneapolis, MN, USA.

Manuscript received March 3, 2015; final manuscript received March 16, 2015; published online April 24, 2015. Editor: Arthur Erdman.

J. Med. Devices 9(2), 020925 (Jun 01, 2015) (2 pages) Paper No: MED-15-1118; doi: 10.1115/1.4030137 History: Received March 03, 2015; Revised March 16, 2015; Online April 24, 2015

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Copyright © 2015 by ASME
Topics: Pressure , Signals
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References

Arshak, A., Arshak, K., Morris, D., Korostynska, O., Jafer, E., and Lyons, G., 2005, “Review of the Potential of a Wireless MEMS and TFT Microsystems for the Measurement of Pressure in the GI Tract,” Med. Eng. Phys., 27(5), pp. 347–356. [CrossRef] [PubMed]
Tsubaki, A., Lewis, W., and Terry, B., 2014, “Implantation and Carrier Mechanism for Long term Biosensing in the Small Intestines,” ASME J. Med. Devices, 8(3), p. 030956. [CrossRef]
Connell, A. M., 1961, “The Motility of the Small Intestine,” Postgrad. Med. J., 37(434), pp. 703–716. [CrossRef] [PubMed]

Figures

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Fig. 1

Designed capsule and the inner structure of the measurement unit

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Fig. 2

Pressure signal during an animal test

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Fig. 3

Flow chart of the presented signal process method (Pcontact: contact pressure, Pambient: ambient pressure)

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Fig. 4

IMFs of pressure signal

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Fig. 5

Oil leaking induced decay in pressure signal

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Fig. 6

FFT of processed initial signal (contraction)

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