Review
Materials Science, Multidisciplinary
Jungang Zhang, Rupam Das, Jinwei Zhao, Nosrat Mirzai, John Mercer, Hadi Heidari
Summary: This article reviews comprehensive power solutions for cardiovascular implantable devices (cIMDs), with a focus on the prospects of wireless power transfer technology. By eliminating the need for fixed capacity batteries, wireless power transfer technology helps to reduce the risks and treatment costs associated with high-risk surgeries, and provides better biocompatibility. Additionally, the article covers related wireless data transmission and modulation-demodulation techniques.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Engineering, Electrical & Electronic
Daibin Jing, Hua Li, Xiao Ding, Wei Shao, Shaoqiu Xiao
Summary: This letter presents a compact and broadband circularly polarized implantable antenna for wireless implantable medical devices in the 2.4 GHz ISM band. The proposed antenna is designed with a modified square ring and a stacked parasitic structure, reducing the size and achieving circular polarization. It provides satisfactory axial ratio bandwidth and impedance bandwidth, with a peak realized gain of -24.7 dBi. The device-level performance and robustness of the antenna were evaluated in human phantoms and validated through measurement in minced pork.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Computer Science, Information Systems
Muhammad Ali Siddiqi, Robert H. S. H. Beurskens, Pieter Kruizinga, Chris I. De Zeeuw, Christos Strydis
Summary: Modern implantable medical devices are at risk of security attacks due to their wireless connectivity, with SecureEcho being proposed as a device-pairing scheme to establish trust between IMD and external reader, achieving ZPD without energy harvesting, and successfully testing the security of the ultrasound channel.
Review
Energy & Fuels
Md Maruf Hossain Shuvo, Twisha Titirsha, Nazmul Amin, Syed Kamrul Islam
Summary: Modern healthcare is shifting towards individual-centric systems, with implantable and wearable medical devices playing a crucial role in making healthcare affordable and accessible. Harvesting energy from the human body and ambient environment is necessary for prolonging device lifetime and ensuring high-performance real-time operation.
Article
Engineering, Biomedical
Nima Soltani, Maged ElAnsary, Jianxiong Xu, Jose Sales Filho, Roman Genov
Summary: A tutorial and comprehensive guide for the design of planar spiral inductors with maximum energy delivery in biomedical implants is presented in this paper. By comparing the proposed methodology with the conventional approach, it is demonstrated that the presented technique increases the maximum deliverable power significantly while maintaining moderate link efficiencies.
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2021)
Article
Engineering, Electrical & Electronic
Xianbo Cao, Hiroyasu Sato, Kai-Da Xu, Wen Jiang, Shuxi Gong, Qiang Chen
Summary: Wireless power transfer technology has played a crucial role in the development of biomedical devices. A systematic method to improve the efficiency of wireless power transfer is proposed, which includes the application of a Fresnel zone plate and an air layer-artificial matching layer to reduce propagation loss and interface reflection. Simulation and experimental results demonstrate that the proposed method significantly enhances the efficiency of wireless power transfer.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Review
Chemistry, Analytical
Sadeque Reza Khan, Andrew J. Mugisha, Andreas Tsiamis, Srinjoy Mitra
Summary: In the past decade, the increasing number of medical patients around the world has put a strain on healthcare resources. To address this issue, healthcare institutions are increasingly relying on smart commercial off-the-shelf (COTS) implantable wireless medical devices (IWMDs) to provide routine medical services. These devices reduce the need for frequent visits to healthcare institutions by monitoring patients' physiological signals and delivering therapeutic drugs remotely. They also minimize physical contact, thus reducing the risk of contagious diseases and allowing patients to recover in familiar surroundings. As a result, low-cost, ubiquitous COTS IWMDs have played a significant role in advancing telemedicine.
Article
Engineering, Electrical & Electronic
Tarakeswar Shaw, Gopinath Samanta, Debasis Mitra
Summary: This article introduces a novel approach for designing an efficient wireless power transfer system for implantable medical devices. By utilizing circular polarized antennas, a polarization conversion-based metamaterial structure is employed to enhance power transfer efficiency. The performance of the system is verified in human torso and head models, with detailed study on specific absorption rate for human safety.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Chemistry, Multidisciplinary
Semin Jo, Wonwoo Lee, Hojin Lee
Summary: Wireless power transfer (WPT) systems enable long-term operation and miniaturization of implantable devices by eliminating the need for battery replacement and wired power supplies. However, the practical application of wireless power transfer systems for implantable devices is challenging due to constraints and requirements of the human body, such as tissue reflection loss, small device size, and electromagnetic wave attenuation.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Jingchen Wang, Eng Gee Lim, Mark Paul Leach, Zhao Wang, Rui Pei, Zhenzhen Jiang, Yi Huang
Summary: This study proposes a near-field wireless power transfer system for implantable medical devices and demonstrates good power transfer efficiency through simulation and experimental results. The system consists of a primary loop and an implantable loop, enabling efficient wireless power transmission.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Ali Asghar Razavi Haeri, Aminghasem Safarian
Summary: This paper presents a cycle by cycle FSK demodulator capable of demodulating a FSK signal with 1% frequency modulation index in a single cycle. It breaks the tradeoff between power transfer efficiency and data rate by establishing a high-rate data transmission link through a high-Q inductive coupling link.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2022)
Review
Biophysics
H. Dinis, P. M. Mendes
Summary: Microfabrication techniques, sensor and actuator miniaturization, optimization of microelectronic circuits, and wireless communication capabilities have enabled the development of implants for previously impossible applications. However, the scaling down of implants raises challenges in powering them, leading to emerging energy sources that do not rely on batteries. This paper reviews recent implantable bioelectronic devices that employ alternative powering methods and discusses their suitability for future devices.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Cedric Girerd, Qiming Zhang, Agrim Gupta, Manideep Dunna, Dinesh Bharadia, Tania K. Morimoto
Summary: A new wireless force sensor based on wave backscattering has been developed, capable of accurately sensing force magnitude and location in surgical tools. The sensor has an average error of 0.01N and a standard deviation of 0.49N for force magnitudes, and an average error of -0.33mm and a standard deviation of 0.82mm for application locations. This sensor shows potential for applications beyond medical instruments, especially in environments where wire routing is challenging.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Biomedical
Jangyong Ahn, Seongho Woo, Haerim Kim, Kyunghwan Song, Sungryul Huh, Seon-Eui Hong, Jedok Kim, Hyung-Do Choi, Seungyoung Ahn
Summary: This paper proposes an out-of-phase coupled wireless power transfer system for implantable medical devices to reduce human exposure to electromagnetic fields. Through simulation and measurements, it is verified that the proposed system can effectively reduce the impact of electromagnetic fields on the human body.
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Nattakarn Wuthibenjaphonchai, Makito Haruta, Kiyotaka Sasagawa, Takashi Tokuda, Sandro Carrara, Jun Ohta
Summary: Wireless epidermal wearable devices are gaining interest as a personalized, low-cost health monitoring technology, especially when combined with biosensors. The implementation of a battery-free approach has successfully extended the device's lifetime and reduced its volume, resulting in a wireless power system and painless measuring system. The device, exemplified by a glucose sensor for diabetes monitoring, utilizes energy harvesting technology and noninvasive sensors to achieve optimal functionality for a variety of glucose concentrations.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Salil Sidharthan Karipott, Praharsh Madappaly Veetil, Bradley D. Nelson, Robert E. Guldberg, Keat Ghee Ong
IEEE SENSORS JOURNAL
(2018)
Article
Engineering, Multidisciplinary
Bradley D. Nelson, Salil Sidharthan Karipott, Robert E. Guldberg, Keat Ghee Ong
MEASUREMENT SCIENCE AND TECHNOLOGY
(2020)
Article
Endocrinology & Metabolism
Brett S. Klosterhoff, Jarred Kaiser, Bradley D. Nelson, Salil S. Karipott, Marissa A. Ruehle, Scott J. Hollister, Jeffrey A. Weiss, Keat Ghee Ong, Nick J. Willett, Robert E. Guldberg
Article
Biotechnology & Applied Microbiology
Sudhanshu Shekhar, Salil S. Karipott, Robert E. Guldberg, Keat G. Ong
Summary: In this study, a commercially available ME material was used to develop a sensor system that can monitor the attachment of anchorage-dependent mammalian cells. The results showed a linear relationship between sensor response and attached fibroblast cells on the sensor surface, and the system was capable of providing temporal profiles of cell growth in real-time at different stages of cell attachment and proliferation.
BIOTECHNOLOGY AND BIOENGINEERING
(2021)
Article
Engineering, Electrical & Electronic
Michael A. McGeehan, Salil Sidharthan Karipott, Michael E. Hahn, David C. Morgenroth, Keat Ghee Ong
Summary: An RGB LED-based optoelectronic sensor was designed in this study to measure multi-axial shear stresses, suitable for orthopedic devices such as prostheses or shoes. The sensor, simple and low-cost, determines shear forces by capturing reflected light intensity and demonstrated efficacy under benchtop testing conditions, showing promise for future medical applications.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Salil Sidharthan Karipott, Bradley D. Nelson, Robert E. Guldberg, Keat Ghee Ong
Summary: A passively powered wireless sensor based on an LCR sensor is developed to measure tensile stress at suture anchors for soft tissue repair. The sensor is embedded within the suture anchor and consists of a strain gauge and a loop connector. The advantages of this sensor include small size, wireless detection, and battery-free operation, making it suitable for both short- and long-term implants.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Michael A. McGeehan, Michael E. Hahn, Salil S. Karipott, Maryam Shuaib, Keat G. Ong
Summary: This paper introduces an optical-based sensor for measuring shear strain, which is suitable for biomedical and robotics applications. The sensor uses a red, green, and blue (RGB) light-emitting diode (LED) to project a cyclical pattern of RGB light onto a color pattern, and measures shear strain by analyzing the shift of the color pattern.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Engineering, Multidisciplinary
Michael McGeehan, Michael Hahn, Salil Karipott, Keat Ghee Ong
Summary: This paper presents the design, fabrication, and characterization of a miniaturized shear force sensor for biomedical applications. The sensor measures two-axis shear force by detecting displacement between a color panel and a light-sensing photodiode. It exhibited strong agreement with gold standard measurements and is well-suited for various biomedical applications.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Multidisciplinary
Salil S. Karipott, Karly Fear, Bradley Nelson, Kelly Leguineche, Angela Lin, Sudhanshu Shekhar, Robert E. Guldberg, Keat Ghee Ong
Summary: The study developed a bone fixation device that provides localized mechanical strains across a bone fracture site to promote healing. Results showed the device can provide highly focused and localized mechanical loading, with high off-axis compressive stiffness, and demonstrated good biocompatibility after being implanted in rodent subjects for 8 weeks.
ENGINEERING RESEARCH EXPRESS
(2021)
