Title :
Feedback-based simultaneous detection of two resonance frequencies of a MIS instrument
Author :
Araghi, M.H. ; Salisbury, S.P.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, ON, Canada
fDate :
June 30 2010-July 2 2010
Abstract :
In this paper, a feedback-based method for detecting two low-frequency resonance characteristics of a dynamic instrument integrated into a MIS tool is presented. The proposed dynamic instrument captures two resonance frequency shifts simultaneously using a phase-locked loop feedback system. Accompanied with amplitude information, these shifts are used to determine viscoelastic properties of a soft tissue. Some important advantages of this method are that it is robust and simple in comparison to other similar instruments; it works fast, and is capable of capturing dynamic mechanical properties of viscoelastic tissues.
Keywords :
biological tissues; biomechanics; biomedical equipment; feedback; surgery; viscoelasticity; MIS instrument; feedback-based method; feedback-based simultaneous detection; low-frequency resonance; mechanical properties; minimally-invasive surgery; resonance frequencies; resonance frequency shifts; soft tissue; viscoelastic properties; Biological tissues; Elasticity; Feedback loop; Instruments; Mechanical factors; Phase locked loops; Resonance; Resonant frequency; Robustness; Viscosity; Minimally-Invasive Surgery (MIS); Phase-Locked Loop (PLL); resonance frequency shift; resonator; soft tissue stiffness measurement;
Conference_Titel :
American Control Conference (ACC), 2010
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-7426-4
DOI :
10.1109/ACC.2010.5531380
