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Technical Brief

Structural Changes of Small Intestine Under Compression by Laparoscopic Stapler1

[+] Author and Article Information
Yu Zhou, Jingjing Xu, Boting Li, Binbin Ren, Yiyun Jin, Chengli Song

Shanghai Institute for Minimally Invasive Therapy,
School of Medical Instrument and Food Engineering,
University of Shanghai for Science and Technology,
Shanghai 200093, China

2Y. Zhou and J. Xu contributed equally to this work.

DOI: 10.1115/1.4033787Manuscript received March 1, 2016; final manuscript received March 17, 2016; published online August 1, 2016. Editor: William Durfee.

J. Med. Devices 10(3), 030911 (Aug 01, 2016) (3 pages) Paper No: MED-16-1105; doi: 10.1115/1.4033787 History: Received March 01, 2016; Revised March 17, 2016

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References

Myers, S. R. , Rothermel, W. S., Jr. , and Shaffer, L. , 2011, “ The Effect of Tissue Compression on Circular Stapler Line Failure,” Surg. Endoscopy, 25(9), pp. 3043–3049. [CrossRef]
Baker, R. S. , Foote, J. , Kemmeter, P. , Brady, R. , Vroegop, T. , and Serveld, M. , 2004, “ The Science of Stapling and Leaks,” Obes. Surgery, 14(10), pp. 1290–1298. [CrossRef]
Chung, R. S. , 1987, “ Blood Flow in Colonic Anastomoses: Effect of Stapling and Suturing,” Ann. Surg., 206(3), pp. 335–339. [CrossRef] [PubMed]
McGuire, J. , Wright, I. C. , and Leverment, J. N. , 2001, “ An In Vitro Assessment of Tissue Compression Damage During Circular Stapler Approximation Tests, Measuring Expulsion of Intracellular Fluid and Force,” Proc. Inst. Mech. Eng. H, 215(6), pp. 589–597. [CrossRef] [PubMed]
Dodde, R. E. , Bull, J. L. , and Shih, A. J. , 2012, “ Bioimpedance of Soft Tissue Under Compression,” Physiol. Meas., 33(6), pp. 1095–109. [CrossRef] [PubMed]

Figures

Grahic Jump Location
Fig. 1

Experimental setup and modified stapler: (a) the experimental setup, (b) the position of the measurement cartridge in the stapler, and (c) a comparison of the original cartridge with the measurement cartridge

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Fig. 2

ColeY model and equation

Grahic Jump Location
Fig. 3

Pressure relaxation on small intestine

Grahic Jump Location
Fig. 4

Changes of ColeY model parameters: (a) changes of extracellular fluid conductance G0 and (b) changes of intracellular fluid conductance ΔG

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