Titlebook: Ultrasound Energy and Data Transfer for Medical Implants; Francesco Mazzilli,Catherine Dehollain Book 2020 Springer Nature Switzerland AG

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Introduction,stic waves to energize and transmit information within the human body. To this end new implanted medical devices (IMDs) are appearing among health monitoring applications which exploit the capability of acoustic waves to penetrate deeper in the body tissue without being significantly attenuated, and

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Ultrasound in Medicine,ues for deeply implanted devices remain numerous, especially miniaturization and power consumption challenges, which are related. In addition, because of the body’s dielectric nature, communicating with implants that are located deep within the body, using conventional techniques like Radio Frequenc

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Regulations and System Specifications,e analogies with similar systems in order to define user requirements (e.g. weight and size of the medical device) and test procedures (e.g. in-vitro, in-vivo). In addition, different organizations give directions for ultrasound use to avoid potential injuries due to thermal (e.g. energy is converte

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System Architecture: Control Unit,, and transducer selections were given by conforming FDA regulations in terms of maximum acoustic intensity (.. and ..). Here, the architecture of the control unit is presented. Specifically, the circuit description addresses choices in the wireless energy transmission and half-duplex communication.

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System Architecture: Transponder, description addresses choices in the wireless energy transmission and half-duplex communication. Figure 5.1 shows the block diagram of the system architecture, where on the left side there is the control unit (CU) and on the right side the transponder (TR). The CU is made up of the following blocks

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Wireless Power Transfer (WPT) and Communication,unication. In Chap. ., the control unit (CU) architecture to drive a spherical array transducer is presented along with details about the front-end and back-end electronics. In Chap. ., the transponder (TR) architecture is shown with important considerations on energy harvesting and speed limits due

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Regulations and System Specifications,d into heat) and mechanical bioeffects (e.g. cavitation). In this chapter exposure limits to ultrasound for human tissues (e.g. cardiac) are introduced so that system specifications (e.g. operating frequency and transducers selection) can be derived.