Journal of Zhejiang University SCIENCE
(ISSN 1009-3095, Monthly)

2002   Vol. 3   No. 5   p.549-552


Biomechanical behavior study of dog's small intestines

CHEN Bai(陈柏)(Department of Mechanical Engineering, Zhejiang University, Hangzhou 310027,China)  
ZHOU Yin-sheng(周银生)(Department of Mechanical Engineering, Zhejiang University, Hangzhou 310027,China)  
Mu Xiao-feng(穆晓枫)(Department of Mechanical Engineering, Zhejiang University, Hangzhou 310027,China)  

Abstract:The biomechanical behavior of dog's duodenum and jejunum were studied and a formulation of the stress-strain relation is presented in this paper. The results obtained indicated that the exponential coefficient α and the incremental duodenum of the elastic modulus are both larger than those of the jejunum. It means that the duodenum is more deformable than the jejunum. The experimental results of this work provide basal data for kinematics study of a robotic endoscope.
Keywords:Biomechanics, Intestines, Biomechanical model

CLC Number:TH776+.1  Document ID:A

Foundation Item:Project supported by the National Natural Science Foundation of China (No.59805017) and the Chinese "863" High Technology Project of China (No.863-512-9805-08)
Author Resume:CHEN Bai(陈柏),E-mail: chenbye@163.net.

References:

[1]Fung, Y.C., 1983. Biomechanics. Science Press, China, p.180-236.
[2], Gegersen, H., Kassab, G., Pallencaoe, E., Lee, C., Chien, S., Skalak, R., Fung, Y.C., 1997. Morphometry and strain distribution in guinea pig duodenum with reference to the zero-stress state. Am J Physiol-Gastr L, 36(4): G865-G874.
[3], Gregersen, H., Emery J.L., McCulloch A.D., 1998. History-dependent mechanical behavior of guinea-pig small intestine. Ann Biomed Eng., 26 (5): 850-858.
[4]Hayashi, I., Iwatuki, N.,1998. Micro moving robotics. Micromechatronics and Human Science, Proceedings of the 1998 International Symposium.p. 41-50.
[5]Hoeg, H.D., Slatkin, A.B., Burdick, J.W., Grundfest, W.S., 2000. Biomechanical modeling of the small intestine as required for the design and operation of a robotic endoscope. Proceedings of the 2000 IEEE International Conference on Robotios and Automation, Vol. 2. p.1599-1606.
[6], Storkholm, J.H., Villadsen, G.E., Jensen S.L., Gregersen, H., 1998. Mechanical properties and collagen content differ between isolated guinea pig duodenum, jejunum, and distal ileum. Digest Dis Sci, 43(9): 2034-2041
[7]Zhou, Y.S., He, H.N., Gu, D.Q., An, Q., Quan, Y.X.,2000.Noninvasive method to drive medical micro-robots. Chinese science bulletin,45(7):617-620.
[8]Zhou, Y.S., Quan Y.X., Yoshinaka, K., Ikeuchi, K., 2001. A new medical microrobot for minimal invasive surgery. P I Mech Eng H, 215(H2): 215-220.


Manuscript Received:2001 Sept. 29

Manuscript Revised:2002 Jan. 6

Published:2002 Dec. 1