TY - JOUR
T1 - Towards deployable meta-implants
AU - Bobbert, Francoise
AU - Janbaz, S.
AU - Zadpoor, A. A.
PY - 2018
Y1 - 2018
N2 - Meta-biomaterials exhibit unprecedented or rare combinations of properties not usually found in nature. Such unusual mechanical, mass transport, and biological properties could be used to develop novel categories of orthopedic implants with superior performance, otherwise known as meta-implants. Here, we use bi-stable elements working on the basis of snap-through instability to design deployable meta-implants. Deployable meta-implants are compact in their retracted state, allowing them to be brought to the surgical site with minimum invasiveness. Once in place, they are deployed to take their full-size load-bearing shape. We designed five types of meta-implants by arranging bi-stable elements in such a way to obtain a radially-deployable structure, three types of auxetic structures, and an axially-deployable structure. The intermediate stable conditions (i.e. multi-stability features), deployment force, and stiffness of the meta-implants were found to be strongly dependent on the geometrical parameters of the bi-stable elements as well as on their arrangement.
AB - Meta-biomaterials exhibit unprecedented or rare combinations of properties not usually found in nature. Such unusual mechanical, mass transport, and biological properties could be used to develop novel categories of orthopedic implants with superior performance, otherwise known as meta-implants. Here, we use bi-stable elements working on the basis of snap-through instability to design deployable meta-implants. Deployable meta-implants are compact in their retracted state, allowing them to be brought to the surgical site with minimum invasiveness. Once in place, they are deployed to take their full-size load-bearing shape. We designed five types of meta-implants by arranging bi-stable elements in such a way to obtain a radially-deployable structure, three types of auxetic structures, and an axially-deployable structure. The intermediate stable conditions (i.e. multi-stability features), deployment force, and stiffness of the meta-implants were found to be strongly dependent on the geometrical parameters of the bi-stable elements as well as on their arrangement.
KW - OA-Fund TU Delft
UR - http://resolver.tudelft.nl/uuid:35081b39-006f-4b9e-bbf0-39f4c7006a89
UR - http://www.scopus.com/inward/record.url?scp=85048046151&partnerID=8YFLogxK
U2 - 10.1039/c8tb00576a
DO - 10.1039/c8tb00576a
M3 - Article
AN - SCOPUS:85048046151
SN - 2050-7518
VL - 6
SP - 3449
EP - 3455
JO - Journal of Materials Chemistry B
JF - Journal of Materials Chemistry B
IS - 21
ER -