TY  - CPAPER
U1  - Konferenzveröffentlichung
A1  - Strittmatter, Joachim
A1  - Hör, Nikolas
A1  - Boskovic, Lazar
T1  - Intelligent Implant System for Bone Lengthening
T2  - Advances in Manufacturing Processes, Intelligent Methods and Systems in Production Engineering (GCMM 2021), 7-9th June 2021, Online, (Lecture Notes in Networks and Systems, vol 335)
N2  - A novel implant system for bone elongation will be presented. With this technique, the body's own bone material, so-called callus, can be formed by gradual distraction of the tubular bones, thus achieving an extension of femur and tibia bones. The driving principle of this fully implantable bone lengthening system is based on a shape memory element. During the surgical treatment, the intramedullary nail serves to stabilize the severed bone and enables the formation of new, endogenous bone material to lengthen the limbs or to bridge bone defects. The intramedullary nail is implanted into the medullary cavity and fixed at both ends with locking bolts. A receiver coil implanted under the skin receives the necessary energy twice a day through high-frequency energy transport to activate the thermal phase transformation of the shape memory element. This gradually increases the bone gap by 0.5 mm each time and stimulates callus formation. Consequently, osteoblasts or osteocytes are formed in the area of the desired bone extension and load-bearing bone material is formed. Three nail prototypes have already been tested for their functionality in a cadaver study in a German clinic. Currently a redesign of this intelligent implant system is underway, focusing on a novel coil geometry, a monitoring sensor system and control technology and a novel connection technology for the drive components. With this intelligent implant system, it will be possible for the first time to lengthen the bones in a patient-friendly manner and to continuously monitor, document and evaluate the entire lengthening process.
KW  - Bone elongation
KW  - Limb lengthening
KW  - NiTi
KW  - Shape memory
KW  - Joining technology
KW  - Monitoring sensor system
Y1  - 2022
SN  - 978-3-030-90531-6
SB  - 978-3-030-90531-6
SN  - 978-3-030-90532-3
SB  - 978-3-030-90532-3
U6  - https://doi.org/10.1007/978-3-030-90532-3_48
DO  - https://doi.org/10.1007/978-3-030-90532-3_48
SP  - 647
EP  - 655
PB  - Springer
CY  - Cham
ER  -