Far field radiative powering of implantable medical therapy delivery devices

摘要

A particular implantable device may include an antenna configured to receive a far field radiative signal. The implantable device may also include a voltage rectifier configured to rectify the far field radiative signal received by the antenna to provide a rectified voltage signal. The implantable device may further include a charge storage element operative to receive the rectified voltage signal and to store charge responsive to the rectified voltage signal. The implantable device may also include a therapy delivery unit powered by the charge storage element. The therapy delivery unit is operative to deliver a therapy to a patient.

主权项

1. A system comprising:
an external transmitter that transmits a pulsed far field radiative signal; and an implantable medical device comprising:
an antenna configured to receive the pulsed far field radiative signal, wherein a power of the pulsed far field radiative signal is inversely proportional to a square of a distance between the antenna and a transmitter of the pulsed far field radiative signal;a voltage rectifier configured to rectify the pulsed far field radiative signal received by the antenna to provide a rectified voltage signal;a charge storage element operative to receive the rectified voltage signal and to store charge responsive to the rectified voltage signal; anda therapy delivery unit powered by the charge storage element, the therapy delivery unit operative to deliver a therapy to a patient.