Patient-Specific Self-Powered Metamaterial Implants for Detecting Bone Healing Progress

Kaveh Barri; Qianyun Zhang; Isaac SwinkYashar AucieKyle HolmbergRyan SauberDaniel T. AltmanBoyle C. ChengZhong Lin WangAmir H. Alavi

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Patient-Specific Self-Powered Metamaterial Implants for Detecting Bone Healing Progress

机译：Patient-Specific Self-Powered Metamaterial Implants for Detecting Bone Healing Progress

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There is an unmet need for developing a new class of smart medical implants with novel properties and advanced functionalities. Here, the concept of “selfaware implants” is proposed to enable the creation of a new generation of multifunctional metamaterial implantable devices capable of responding to their environment, empowering themselves, and self-monitoring their condition. These functionalities are achieved via integrating nano energy harvesting and mechanical metamaterial design paradigms. Various aspects of the proposed concept are highlighted by developing proof-of-concept interbody spinal fusion cage implants with self-sensing, self-powering, and mechanical tunability features. Bench-top testing is performed using synthetic biomimetic and human cadaver spine models to evaluate the electrical and mechanical performance of the developed patient-specific metamaterial implants. The results show that the self-aware cage implants can diagnose bone healing process using the voltage signals generated internally through their built-in contact-electrification mechanisms. The voltage and current generated by the implants under the axial compression forces of the spine models reach 9.2 V and 4.9 nA, respectively. The metamaterial implants can serve as triboelectric nanogenerators to empower low-power electronics. The capacity of the proposed technology to revolutionize the landscape of implantable devices and to achieve better surgical outcomes is further discussed.

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《Advanced functional materials》 |2022年第32期|2203533.1-2203533.11|共11页
作者
Kaveh Barri; Qianyun Zhang; Isaac SwinkYashar AucieKyle HolmbergRyan SauberDaniel T. AltmanBoyle C. ChengZhong Lin WangAmir H. Alavi;
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作者单位

Department of Civil and Environmental Engineering University of Pittsburgh Pittsburgh, PA 15261, USA;

Department of Neurosurgery Allegheny Health Network Pittsburgh, PA 15212, USA;

Department of Bioengineering University of Pittsburgh Pittsburgh, PA 15260, USASchool of Materials Science and Engineering Georgia Institute of Technology Atlanta, GA 30332, USA,Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083, ChinaDepartment of Civil and Environmental Engineering University of Pittsburgh Pittsburgh, PA 15261, USA,Department of Bioengineering University of Pittsburgh Pittsburgh, PA 15260, USA,Department of Computer Science and Information Engineering Asia University;

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正文语种英语
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bone healing; diagnostic; energy harvesting; medical implant; metamaterial; triboelectric nanogenerators;

Patient-Specific Self-Powered Metamaterial Implants for Detecting Bone Healing Progress

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