Wireless power transmission for implantable devices

描述(由申请人提供)：显然需要为植入式电子医疗设备开发先进的电源和充电协议。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程序成本高昂，会引起患者痛苦，并有可能导致感染。许多新的和新兴的医疗设备技术，如增强型设备间遥测、自动无线警报信号、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新方法可以提供比目前不常用的方法显著的优点。一种基于超声波技术原理的无线能量传输方法正在开发中。PMN-PT的开发使这一概念变得可行，PMN-PT是一种先进材料，显示出将声波转换为电能的巨大潜力。潜在的优势包括发射器和接收器小得多，接收器可以嵌入设备中，以及消除电磁干扰和金属加热。我们的目标是证明使用这种材料将大量的无线能量传输到身体内的位置的可行性。具体目标包括设计接收器，制造具有正确性能的材料，制造接收器，开发电路以将其与植入式电池匹配，通过实验确认有用的功率传输水平，同时小心遵守公认的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.