Modelling and characterization of an instrumented medical needle in sight of new microsensor design for its insertion guidance

Author

Yang, Wenbin ; Bonvilain, Agnès ; Alonso, Thierry ; Moreau-Gaudry, Alexandre ; Basrour, Skandar

Author_Institution

TIMA Lab., UJF, Grenoble, France

fYear

2010

fDate

Aug. 31 2010-Sept. 4 2010

Firstpage

6465

Lastpage

6468

Abstract

A needle used in in-vivo medical percutaneous procedures is subject to auto-deflection coming from its interactions with inhomogeneous and anisotropic tissues and organs in human body. In this paper we present the modelling and the characterization of microsensors glued on a medical needle in order to detect its real-time deflection by measuring strain variations on the needle. A first prototype has been developed by gluing metal foil strain gauges to the surface of a biopsy needle. The characterization of this prototype is carried out in comparison with theoretical analysis and finite element method (FEM) modelling. Results acquired through these different methods show an excellent conformity and confirm the feasibility of an instrumented medical device.

Keywords

bioMEMS; biomedical equipment; biomedical measurement; finite element analysis; foils; microsensors; needles; strain gauges; strain measurement; anisotropic tissues; biopsy needle; finite element method; human body; inhomogeneous tissues; insertion guidance; instrumented medical needle; metal foil strain gauges; microsensors; organs; real-time deflection; strain variations; Biomedical imaging; Finite element methods; Instruments; Needles; Prototypes; Strain; Trajectory; Equipment Design; Humans; Models, Theoretical; Needles;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2010 Annual International Conference of the IEEE

Conference_Location

Buenos Aires

ISSN

1557-170X

Print_ISBN

978-1-4244-4123-5

Type

conf

DOI

10.1109/IEMBS.2010.5627342

Filename

5627342