Release date: 2014-08-11
It was learned from the Chinese Academy of Sciences that researchers at the Beijing Institute of Nano-Energy and Systems have made new progress in the development of long-lasting energy systems for implantable medical devices. The friction nano-generators developed for the first time use the energy generated by breathing to drive cardiac pacing. Device. The research results were published in the latest internationally renowned academic journal Advanced Materials.
Implantable medical devices such as cardiac pacemakers can greatly improve the patient's symptoms and quality of life, with significant social and economic value. However, as an emerging medical device development direction, implantable medical devices still face many problems to be solved, first of all, the problem of long-term energy supply. At this stage, implantable devices mainly rely on battery power, and the working life is limited. Once the battery is exhausted, the patient has to face a huge surgical risk and economic burden again. Therefore, the development of a long-lasting in-vivo energy supply system is of great significance for the development of implantable medical devices.
Researchers from the research group led by Academician Wang Zhonglin and Associate Professor Li Zhou of the Beijing Institute of Nano Energy and Systems have jointly developed an implantable self-driven energy system that includes implantable friction nanogenerators and energy conversion storage devices. . The size of the friction nanogenerator is only 12 mm x 12 mm x 0.7 mm. The research team implanted a self-driven energy system into the rat, successfully collecting and transforming the energy generated by multiple respiratory sites in the rat, storing it in the form of electrical energy, and driving an external pacemaker prototype to work. Produces the same electrical pulse as a medical pacemaker. According to theoretical calculations, the rat can successfully drive the pacemaker 1 time per breath by the energy collected by the implantable friction nanogenerator. If the human body is used, the pacemaker can be continuously driven by breathing alone to make it work properly.
Source: Xinhuanet
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