Patent application number | Description | Published |
20120274271 | INDUCTIVELY RECHARGEABLE IMPLANTABLE DEVICE WITH REDUCED EDDY CURRENTS - A case for an implantable medical device includes a metal case portion, having an inside and an outside, configured to attach to at least one other case portion to define a biocompatible case for the implantable medical device. The metal case portion has a plurality of grooves disposed on at least one of the inside and the outside, the grooves being oriented substantially perpendicular to an expected direction of eddy currents produced by an inductive recharging coil in proximity thereto. | 11-01-2012 |
20120276854 | Slot Antenna For An Implantable Device - An implantable medical device may include a case which houses components of the implantable medical device. The implantable medical device may include an inductive coil coupled to a rechargeable battery. The inductive coil may be operative to inductively couple to an external coil and to transfer energy from the external coil to the rechargeable battery to recharge the rechargeable battery. The implantable medical device may include a cutout formed in the case of the implantable medical device and filled with a dielectric material. The cutout may be operative to reduce eddy currents in the case during recharge of the rechargeable battery. The implantable medical device may include a slot antenna disposed within the case. The slot antenna may be operative to communicate with an external device through the cutout in the case. | 11-01-2012 |
20120276856 | IMPLANTABLE MEDICAL DEVICE ANTENNA - An implantable medical device includes a case having a conductive housing defining an opening. A dielectric material is coupled to the conductive housing to hermetically seal the opening. An antenna is within the case under the dielectric material. A header block is coupled to the case over the dielectric material. | 11-01-2012 |
20120277829 | SYSTEM AND METHOD FOR CHARGING A POWER CELL IN AN IMPLANTABLE MEDICAL DEVICE - Apparatus and methods for charging a power cell in an implantable medical device (“IMD”) are disclosed herein. In one embodiment, a method includes providing an electrical pulse to an inductor external to the IMD. A frequency of an oscillation signal induced in the inductor by the current pulse is measured. The inductor is driven with an oscillating signal having a frequency based on the measured frequency of the oscillation signal. The power cell is charged using current induced in the IMD by the driving of the inductor. | 11-01-2012 |
20130018438 | FAR FIELD RADIATIVE POWERING OF IMPLANTABLE MEDICAL THERAPY DELIVERY DEVICES - 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. | 01-17-2013 |
20130018439 | IMPLANTABLE NERVE WRAP FOR NERVE STIMULATION CONFIGURED FOR FAR FIELD RADIATIVE POWERING - 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 stimulation module powered by the charge storage element. The stimulation module may be operative to generate an electrical stimulation signal to stimulate a target nerve of a patient. The implantable medical device may further include a nerve wrap configured to house the voltage rectifier, the charge storage element, and the stimulation module. The nerve wrap may include one or more electrodes operative to deliver the electrical stimulation signal to the target nerve. | 01-17-2013 |
20130018440 | POWERING OF AN IMPLANTABLE MEDICAL THERAPY DELIVERY DEVICE USING FAR FIELD RADIATIVE POWERING AT MULTIPLE FREQUENCIES - A particular implantable device may include one or more antennas configured to receive a first far field radiative signal and a second far field radiative signal. The one or more antennas may be configured to receive the first far field radiative signal in a first frequency band and to receive the second far field radiative signal in a second frequency band. The implantable device may include a voltage rectifier configured to rectify the received first far field radiative signal and the received second far field radiative signal 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 may be operative to deliver a therapy to a patient. | 01-17-2013 |
20130253612 | CIRCUIT, SYSTEM AND METHOD FOR FAR-FIELD RADIATIVE POWERING OF AN IMPLANTABLE MEDICAL DEVICE - An isolated circuit including a RF input configured to receive a far field radiative powering signal and a rectified voltage output configured to provide a rectified voltage based on the received far field radiative powering signal. The isolated circuit also includes a first power assembly comprising a first impedance coupled to the RF input where the first impedance is provided, at least in part, by activating a first switch in response to the rectified voltage satisfying a first voltage threshold. The isolated circuit also includes a second power assembly comprising a second impedance coupled to the RF input where the second impedance is provided, at least in part, by activating the first switch and a second switch in response to the rectified voltage satisfying the first voltage threshold and a second voltage threshold, respectively. | 09-26-2013 |
20130261703 | POWERING MULTIPLE IMPLANTABLE MEDICAL THERAPY DELIVERY DEVICES USING FAR FIELD RADIATIVE POWERING AT MULTIPLE FREQUENCIES - A system includes a first implantable medical device configured to receive a first far field radiative signal at a first frequency from an external transmitter to charge a first charge storage device. The first implantable medical device includes a first therapy delivery unit powered by the first charge storage device. The first therapy delivery unit delivers a first therapy to a first target tissue of a patient. The system also includes a second implantable medical device configured to receive a second far field radiative signal at a second frequency from the external transmitter to charge a second charge storage device. The second implantable medical device includes a second therapy delivery unit powered by the second charge storage device. The second therapy delivery unit delivers a second therapy to a second target tissue of the patient. | 10-03-2013 |