"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 8159348 | Communication system with antenna box amplifier A communication system for communicating with an implanted wireless sensor is provided. A transmit antenna element can propagate an energizing signal onto a communication medium and a receive antenna element can recover a responsive implanted sensor response signal.... | 04/17/2012 |
| 8118749 | Apparatus and method for sensor deployment and fixation An implant assembly is implanted in vivo within a vascular system in which a vessel divides at a furcation into two sub-vessels, each sub-vessel having a diameter smaller than the diameter of said vessel. An implant assembly is released into a vessel such as a pulmo... | 02/21/2012 |
| 8111150 | Physiological data acquisition and management system for use with an implanted wireless sensor Aspects and embodiments of the present invention provide a system for obtaining, processing and managing data from an implanted sensor. In some embodiments, a patient or other persons can use a flexible antenna to obtain data from the implanted sensor. The flexible ... | 02/07/2012 |
| 8026729 | System and apparatus for in-vivo assessment of relative position of an implant A system and apparatus for providing an in-vivo assessment of relative movement of an implant that is positioned in a living being is provided that includes a first assembly and a second assembly that are positioned within the living being. The first assembly includ... | 09/27/2011 |
| 8025625 | Sensor with electromagnetically coupled hermetic pressure reference An electromagnetically coupled hermetic chamber includes a body defining a hermetic chamber. A first conductive structure is disposed within the hermetic chamber, and a second conductive structure is attached to the body outside of the hermetic chamber. The first co... | 09/27/2011 |
| 8021307 | Apparatus and method for sensor deployment and fixation A delivery system for fixation of an implant assembly having an intracorporeal device at a deployment site using an anchoring structure. This invention provides an implant assembly having a an anchor for fixation within a vessel. The anchoring structure adapted to b... | 09/20/2011 |
| 7966886 | Method and apparatus for measuring pressure inside a fluid system A disclosed method determines fluid pressure inside a vessel without compromising the integrity of the vessel. A sensor is positioned in operative communication with the external wall of the vessel such that expansion of the external wall of the vessel exerts a forc... | 06/28/2011 |
| 7936174 | Coupling loop A coupling loop or antenna is provided that can be used with a system that determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the s... | 05/03/2011 |
| 7932732 | Preventing a false lock in a phase lock loop The present invention determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with a low dut... | 04/26/2011 |
| 7909770 | Method for using a wireless pressure sensor to monitor pressure inside the human heart A method for measuring pressure within a heart includes the steps of: (1) providing a passive wireless pressure sensor having a characteristic impedance and a deflectable surface, the characteristic impedance changing in response to deflection of the deflectable sur... | 03/22/2011 |
| 7908018 | Flexible electrode An electrode array has a flexible body supporting a plurality of electrodes. Each electrode comprises an exposed connector pad at the upper end of the body, an exposed recording/stimulating pad at the lower end of the body, and a conductor located within the body an... | 03/15/2011 |
| 7854172 | Hermetic chamber with electrical feedthroughs A pressure cavity is durable, stable, and biocompatible and configured in such a way that it constitutes pico to nanoliter-scale volume. The pressure cavity is hermetically sealed from the exterior environment while maintaining the ability to communicate with other ... | 12/21/2010 |
| 7839153 | Communicating with an implanted wireless sensor The present invention determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with a low dut... | 11/23/2010 |
| 7829363 | Method and apparatus for microjoining dissimilar materials Disclosed are apparatus and methods that provide for electrical contacts in a substrate. For example, the apparatus may comprise a trench formed in a substrate, with an electrical contact pad formed on interior walls of the trench that comprises a narrowed opening. ... | 11/09/2010 |
| 7812416 | Methods and apparatus having an integrated circuit attached to fused silica Disclosed are methods for attaching an integrated circuit to a substrate, and in particular, a fused silica substrate, along with apparatus fabricated using the methods. Exemplary apparatus comprises a glass substrate, a metallic layer disposed on the substrate, and... | 10/12/2010 |
| 7748277 | Hermetic chamber with electrical feedthroughs An exemplary pressure cavity is disclosed that is durable, stable, and biocompatible and configured in such a way that it constitutes pico to nanoliter-scale volume. The exemplary pressure cavity is hermetically sealed from the exterior environment while maintaining... | 07/06/2010 |
| 7710103 | Preventing false locks in a system that communicates with an implanted wireless sensor The present invention determines the resonant frequency of a wireless sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with ... | 05/04/2010 |
| 7699059 | Implantable wireless sensor The progress of a endovascular aneurysm repair can be monitored by inserting a pressure transducer sensor using a catheter into the sac during endovascular aneurysm repair and then using a small, hand-held read out device to measure pressure easily, safely, inexpens... | 04/20/2010 |
| 7679355 | Communicating with an implanted wireless sensor The present invention determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with a low dut... | 03/16/2010 |
| 7667547 | Loosely-coupled oscillator Certain embodiments of the present invention provide a loosely-coupled oscillator including a circuit and an electronic device that are not physically connected. The electronic device may include an amplifier for amplifying a signal to produce an output signal and i... | 02/23/2010 |
| 7662653 | Method of manufacturing a hermetic chamber with electrical feedthroughs A method of manufacturing a hermetically-sealed chamber with an electrical feedthrough includes the step of hermetically fixing an electrode to a substrate in a predetermined location on the substrate. A passage is formed through the substrate through the predetermi... | 02/16/2010 |
| 7647836 | Hermetic chamber with electrical feedthroughs A pressure cavity is durable, stable, and biocompatible and configured in such a way that it constitutes pico to nanoliter-scale volume. The pressure cavity is hermetically sealed from the exterior environment while maintaining the ability to communicate with other ... | 01/19/2010 |
| 7647831 | Method for measuring pressure inside an anatomical fluid system A disclosed method determines fluid pressure inside a vessel without compromising the integrity of the vessel. A sensor is positioned in operative communication with the external wall of the vessel such that expansion of the external wall of the vessel exerts a forc... | 01/19/2010 |
| 7621036 | Method of manufacturing implantable wireless sensor for in vivo pressure measurement A method of manufacturing a sensor for in vivo applications includes the steps of providing two wafers of an electrically insulating material. A recess is formed in the first wafer, and a capacitor plate is formed in the recess of the first wafer. A second capacitor... | 11/24/2009 |
| 7618363 | Hydraulically actuated artificial muscle for ventricular assist A ventricular assist device comprises a sheet of hydraulically actuated material that can be affixed to prescribed locations on the surface of the heart to assist areas of the heart that do not contract normally. The material is comprised of a network of contractibl... | 11/17/2009 |
| 7595647 | Cable assembly for a coupling loop A coupling loop or antenna is provided that can be used with a system that determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the s... | 09/29/2009 |
| 7574792 | Method of manufacturing an implantable wireless sensor In the disclosed method of manufacturing an implantable wireless sensor, a cavity is etched in one side of a first substrate. A conductive structure are formed on the base of the cavity. A second conductive structureare formed on a surface of a second substrate, and... | 08/18/2009 |
| 7550978 | Communicating with an implanted wireless sensor The present invention determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with a low dut... | 06/23/2009 |
| 7498799 | Communicating with an implanted wireless sensor The present invention determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with a low dut... | 03/03/2009 |
| 7492144 | Preventing false locks in a system that communicates with an implanted wireless sensor The present invention determines the resonant frequency of a wireless sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with ... | 02/17/2009 |
| 7481771 | Implantable wireless sensor for pressure measurement within the heart The progress of a endovascular cardiac repair can be monitored by inserting a pressure transducer sensor using a catheter into a chamber of the heart during endovascular repair and then using a small, hand-held read out device to measure pressure easily, safely, ine... | 01/27/2009 |
| 7466120 | Communicating with an implanted wireless sensor Aspects of the present invention determine the resonant frequency of a sensor by obtaining sensor signals in response to three energizing signals, measuring the phase of each sensor signal, and using a group phase delay to determine the resonant frequency. The phase... | 12/16/2008 |
| 7439723 | Communicating with an implanted wireless sensor The present invention determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with a low dut... | 10/21/2008 |
| 7432723 | Coupling loop A coupling loop or antenna is provided that can be used with a system that determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the s... | 10/07/2008 |
| 7245117 | Communicating with implanted wireless sensor The present invention determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with a low dut... | 07/17/2007 |
| 6855115 | Implantable wireless sensor for pressure measurement within the heart The progress of a endovascular cardiac repair can be monitored by inserting a pressure transducer sensor using a catheter into a chamber of the heart during endovascular repair and then using a small, hand-held read out device to measure pressure easily, safely, ine... | 02/15/2005 |