TY - GEN
T1 - Contact force evaluation of orthoses for the treatment of malformed ears
AU - Hanafusa, Akihiko
AU - Isomura, Tsuneshi
AU - Sekiguchi, Yukio
AU - Takahashi, Hajime
AU - Dohi, Takeyoshi
N1 - Publisher Copyright:
© Springer-Verlag Berlin Heidelberg 2002.
PY - 2002
Y1 - 2002
N2 - In most cases, malformed ears of neonates can be effectively treated by fitting a suitably shaped orthosis. In this study, a finite element analysis system was developed to evaluate the contact force between the orthosis and auricle. In order to reduce the contact force, two methods for modifying orthosis shape were developed. One entailed the addition of a detour curve, while the other canceled out the insertion of the nodal point where maximum force exceeded the limit during the incremental step of finite element analysis. Moreover, two small sensors were developed, one using a silicon tube and the other a strain gauge, for mounting on the orthosis and measuring contact force. Straight, curved and maximum force-restricted orthoses were manufactured for an adult auricle. Simulation and insertion experiments using silicon tube and strain gauge sensors were performed. Results demonstrated that the strength of contact force between the orthosis and auricle decreased from straight type, through curved type to the maximum force-restricted type.
AB - In most cases, malformed ears of neonates can be effectively treated by fitting a suitably shaped orthosis. In this study, a finite element analysis system was developed to evaluate the contact force between the orthosis and auricle. In order to reduce the contact force, two methods for modifying orthosis shape were developed. One entailed the addition of a detour curve, while the other canceled out the insertion of the nodal point where maximum force exceeded the limit during the incremental step of finite element analysis. Moreover, two small sensors were developed, one using a silicon tube and the other a strain gauge, for mounting on the orthosis and measuring contact force. Straight, curved and maximum force-restricted orthoses were manufactured for an adult auricle. Simulation and insertion experiments using silicon tube and strain gauge sensors were performed. Results demonstrated that the strength of contact force between the orthosis and auricle decreased from straight type, through curved type to the maximum force-restricted type.
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U2 - 10.1007/3-540-45786-0_28
DO - 10.1007/3-540-45786-0_28
M3 - Conference contribution
AN - SCOPUS:33748979393
SN - 9783540457862
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 224
EP - 231
BT - Medical Image Computing and Computer-Assisted Intervention - MICCAI 2002 - 5th International Conference, Proceedings
A2 - Dohi, Takeyoshi
A2 - Kikinis, Ron
PB - Springer Verlag
T2 - 5th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2002
Y2 - 25 September 2002 through 28 September 2002
ER -