Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7917213 | MRI compatible implanted electronic medical lead An implantable biocompatible lead that is also compatible with a magnetic resonance imaging scanner for the purpose of diagnostic quality imaging is described. The implantable electrical lead comprises a plurality of coiled insulated conducting wires wound in a firs... | 03/29/2011 |
| 7881804 | Composite waveform based method and apparatus for animal tissue stimulation A medical apparatus, for artificially stimulating internal tissue of an animal, applies a composite voltage pulse to a pair of electrodes implanted in the animal. The composite voltage pulse is formed by a first segment and a second segment contiguous with the first... | 02/01/2011 |
| 7826903 | Radio frequency antenna for a wireless intravascular medical device A radio frequency antenna is provided for use with a medical device for implantation into an animal. The antenna comprises a coil formed by a wire that includes a core formed of a shape-memory material with an electrically conductive first layer applied to an outer ... | 11/02/2010 |
| 7769466 | Class-E radio frequency amplifier for use with an implantable medical device A medical apparatus includes an extracorporeal power source that transmits electrical power via a radio frequency signal to a medical device implanted inside an animal. The extracorporeal power source has a Class-E amplifier with a choke and a semiconductor switch c... | 08/03/2010 |
| 7749265 | Radio frequency antenna for a wireless intravascular medical device A radio frequency antenna is provided for use with a medical device for implantation into an animal. The antenna comprises a coil formed by a wire that includes a core formed of a shape-memory material with an electrically conductive first layer applied to an outer ... | 07/06/2010 |
| 7720547 | Extracorporeal power supply with a wireless feedback system for an implanted medical device A medical device adapted for implantation into a patient receives electrical power from an extracorporeal power supply. The medical device has a first receiver for a first wireless signal, a power circuit that extracts energy from the first wireless signal to power ... | 05/18/2010 |
| 7711434 | Wireless intravascular medical device with a double helical antenna assembly A medical device, such as a cardiac pacing device for an animal, includes an intravascular antenna that has a first coil for engaging a wall of a first blood vessel to receive a radio frequency signal. The first coil includes a first winding wound helically in a rot... | 05/04/2010 |
| 7535296 | Class-E radio frequency power amplifier with feedback control A Class-E power amplifier includes a choke and a switch connected in series between a source of a supply voltage and circuit ground and connected to an inductively coupled coil. An output node of the amplifier is formed between choke and the switch and connected to ... | 05/19/2009 |
| 7532932 | Implantable medical apparatus having an omnidirectional antenna for receiving radio frequency signals An radio frequency antenna assembly is provided for a medical device such as one capable of being implanted into a patient. The antenna assembly includes a plurality of antennas, each oriented to receive a radio frequency signal propagating along a different axis. T... | 05/12/2009 |
| 7519421 | Vagal nerve stimulation using vascular implanted devices for treatment of atrial fibrillation An abnormally rapid ventricular cardiac rate that results from atrial fibrillation can be reduced by stimulating a vagal nerve of the heart. An apparatus for such stimulation includes a power transmitter that emits a radio frequency signal. A stimulator, implanted i... | 04/14/2009 |
| 7397243 | Magnetic resonance imaging system with a class-E radio frequency amplifier having a feedback circuit A Class-E amplifier has been adapted for use in the radio frequency section that drives a transmit coil of a magnetic resonance imaging (MRI) system. The Class-E amplifier responds to a radio frequency carrier signal and a control signal by producing a radio frequen... | 07/08/2008 |
| 7382128 | Magnetic resonance imaging system with a Class-E radio frequency amplifier A Class-E amplifier has been adapted for use in the radio frequency section of a magnetic resonance imaging (MRI) system. A drive signal is produced by modulating the envelope of a radio frequency carrier signal and then is applied to a switch in the Class-E amplifi... | 06/03/2008 |
| 7310556 | Implantable medical stimulation apparatus with intra-conductor capacitive energy storage An implantable device electrically stimulates an organ of an animal in response to a trigger event. Between trigger event that device receives a wireless signal, such as a radio frequency signal, and stores energy from the signal in a plurality of capacitors. The ca... | 12/18/2007 |
| 7295879 | Double helical antenna assembly for a wireless intravascular medical device A medical device, such as a cardiac pacing device for an animal, includes an intravascular antenna that has a first coil for engaging a wall of a first blood vessel to receive a radio frequency signal. The first coil includes a first winding wound helically in a rot... | 11/13/2007 |
| 7003350 | Intravenous cardiac pacing system with wireless power supply A cardiac pacemaker includes a power transmitter which periodically transmits a pulse of a radio frequency signal to a vascular electrode-stent that is implanted in a vein or artery of an animal. The vascular electrode-stent employs energy from the radio frequency s... | 02/21/2006 |
| 6917833 | Omnidirectional antenna for wireless communication with implanted medical devices Medical devices implanted in a patient can be activated and powered by an RF signal. Unless the medical device is properly oriented with respect to the transmitting antennas enough signal energy may not be received to power that device. However, optimum orientation ... | 07/12/2005 |
| 6907285 | Implantable defibrillartor with wireless vascular stent electrodes A cardiac defibrillator includes a fibrillation detector, which determines when a medical patient requires defibrillation at which time a transmitter produces a radio frequency signal. A first stent electrode is implanted into a blood vessel at a first location in t... | 06/14/2005 |
| 6592518 | Cardiac monitoring system and method with multiple implanted transponders A plurality of radio frequency semi-passive transponders are attached to an animal's organ, such as the heart. Each semi-passive transponder may be attached to the surface of the organ or mounted on a stent that is implanted in a blood vessel of the organ... | 07/15/2003 |
| 6445953 | Wireless cardiac pacing system with vascular electrode-stents A cardiac pacing apparatus has a source of pacing pulses that are transmitted through the animal by a radio frequency signal. An electrode-stent is implanted in a blood vessel adjacent to the point at which stimulation is desired. The electrode-stent cont... | 09/03/2002 |
