Wireless power transmission for implantable devices

描述（由申请人提供）：明确需要开发用于植入电子医疗设备的先进电源和充电协议。大多数植入物的使用寿命受到电源寿命的限制。起搏器和其他植入式电池更换手术价格昂贵，会导致患者痛苦，并有可能引起感染。许多新兴的医疗设备技术，如增强的设备间遥测、自动无线报警信号、先进的传感器和输液泵疗法，继续对电力提出要求。一种新的二次电池充电方法比目前不常用的充电方法具有显著的优点。一种基于超声技术原理的无线电力传输方法正在被开发。PMN-PT是一种先进的材料，具有将声波转化为电能的巨大潜力。潜在的优势包括更小的发射器和接收器，接收器可以嵌入到设备中，消除电磁干扰和金属加热。目的是证明使用这种材料将大量无线电力传输到体内各部位的可行性。具体目标包括设计接收器，使材料具有正确的性能，制造接收器，开发电路使其与可植入电池相匹配，实验确认有用的功率传输水平，同时要小心遵守公认的FDA超声安全指南。

DESCRIPTION (provided by applicant): A clear need exists for the development of advanced power sources and recharging protocols for implanted electro-medical devices. The useful lifetime of most implants is constrained by the longevity of the power source. Pacemaker and other implantable battery replacement procedures are expensive, cause patient distress, and have the potential for causing infections. Many new and emerging medical device technologies, such as enhanced inter-device telemetry, automated wireless alarm signaling, advanced sensors, and infusion pump therapies, continue to place demands on power. A novel new method for recharging secondary batteries can provide significant advantages over the infrequently used currently method. A wireless power transmission method based on the principle of ultrasound technology is being developed. The concept is made feasible by the development of PMN-PT, an advanced material that exhibits significant potential for transforming acoustic to electrical power. The potential advantages include much smaller transmitters and receivers, receivers that can be embedded in devices, and elimination of electromagnetic interference and metal heating. The goal is to demonstrate the feasibility of significant wireless power transfer to sites within the body using this material. Specific aims include designing the receiver, making the material with the correct properties, fabricating the receiver, developing the circuitry to mate it to the implantable battery, confirming useful power transmission levels experimentally, meanwhile being careful to adhere to accepted FDA ultrasound safety guidelines.