Wireless sensors for continuous, multimodal measurements at the skin interface with lower limb prostheses
| Autor: | Yoonseok Park, Yonggang Huang, Jean Won Kwak, Xuexian Chen, Jessica Yohay, Jongwon Kim, Anthony Banks, Dominic Grande, John A. Rogers, Donghyun Kim, Raudel Avila, Ryan Caldwell, Jong Yoon Lee, Surabhi R. Madhvapathy, Zhaoqian Xie, Inhwa Jung, Dennis Ryu, Claire Liu, Da Som Yang, Christopher Ogle, Cunman Liang, Kyeongha Kwon, Mengdi Han, Stefania Fatone, Myeong Namkoong, Manish J. Patel, Xu Guo, Shuai Xu, Ha Uk Chung |
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| Rok vydání: | 2020 |
| Předmět: |
business.industry
Computer science Interface (computing) 010401 analytical chemistry Continuous monitoring Process (computing) Temperature Artificial Limbs 02 engineering and technology General Medicine 021001 nanoscience & nanotechnology Prosthesis Design 01 natural sciences Pressure sensor Article 0104 chemical sciences Power (physics) Electric Power Supplies Transmission (telecommunications) Key (cryptography) Wireless 0210 nano-technology business Computer hardware Skin |
| Zdroj: | Sci Transl Med |
| ISSN: | 1946-6242 |
| Popis: | Precise form-fitting of prosthetic sockets is important for the comfort and well-being of persons with limb amputations. Capabilities for continuous monitoring of pressure and temperature at the skin-prosthesis interface can be valuable in the fitting process and in monitoring for the development of dangerous regions of increased pressure and temperature as limb volume changes during daily activities. Conventional pressure transducers and temperature sensors cannot provide comfortable, irritation-free measurements because of their relatively rigid construction and requirements for wired interfaces to external data acquisition hardware. Here, we introduce a millimeter-scale pressure sensor that adopts a soft, three-dimensional design that integrates into a thin, flexible battery-free, wireless platform with a built-in temperature sensor to allow operation in a noninvasive, imperceptible fashion directly at the skin-prosthesis interface. The sensor system mounts on the surface of the skin of the residual limb, in single or multiple locations of interest. A wireless reader module attached to the outside of the prosthetic socket wirelessly provides power to the sensor and wirelessly receives data from it, for continuous long-range transmission to a standard consumer electronic device such as a smartphone or tablet computer. Characterization of both the sensor and the system, together with theoretical analysis of the key responses, illustrates linear, accurate responses and the ability to address the entire range of relevant pressures and to capture skin temperature accurately, both in a continuous mode. Clinical application in two prosthesis users demonstrates the functionality and feasibility of this soft, wireless system. |
| Databáze: | OpenAIRE |
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