Patent application number | Description | Published |
20100179628 | Neurostimulator - Methods and devices of stimulating nerves are disclosed. In one embodiment adapted for stimulating excitable tissue, the invention includes drive circuitry ( | 07-15-2010 |
20110077722 | NEUROSTIMULATOR - Methods and devices of stimulating nerves are disclosed. In one embodiment adapted for stimulating excitable tissue, the invention includes drive circuitry ( | 03-31-2011 |
20130096435 | PIEZO MICRO-MARKERS FOR ULTRASOUND MEDICAL DIAGNOSTICS - An imaging system is disclosed that uses piezoelectric markers. The piezoelectric fields in combination with ultrasound reflections can be used to construct an image of an otherwise difficult to detect feature within a subject's body. In one embodiment, the invention includes a piezoelectric marker, including at least one piece of piezoelectric material, an ultrasound transducer connected to an ultrasound pulser and a receiver, a computer sequencing control connected to the receiver and the ultrasound pulser, a display connected to the computer sequencing control and electrodes connected to the computer sequencing control via amplification circuitry. | 04-18-2013 |
20130096656 | NEUROSTIMULATOR - Methods and devices for stimulating nerves are disclosed. In one embodiment adapted for stimulating excitable tissue, the invention includes drive circuitry, an acoustic transducer and a pair of electrodes. | 04-18-2013 |
20140316499 | NEUROSTIMULATOR - Methods and devices for stimulating nerves are disclosed. In one embodiment adapted for stimulating excitable tissue, the invention includes drive circuitry, an acoustic transducer and a pair of electrodes. | 10-23-2014 |
Patent application number | Description | Published |
20100198039 | Systems and Methods for Wireless Transmission of Biopotentials - The invention relates to wireless biotelemetry of low level bioelectric and biosensor signals by means of directly modulating the backscatter of a resonant circuit. Low level electrical analog or digital signals are directly applied to a resonant circuit containing a voltage-variable capacitor such as a varactor diode, that proportionally shifts the resonant frequency and so amplitude of radiofrequency backscatter in a way that represents analog bioelectric or biosensor waveform data. By strongly driving the resonant circuit with a radiofrequency source, a voltage variable capacitance can be caused to amplify the bio-signal level by a parametric process and so provide sufficient sensitivity to telemeter for low millivolt and microvolt level signals without additional amplification. A feature of the device is its simplicity and that it accomplishes both modulation and preamplification of low level sensor signals by the same variable capacitance circuit which reduces the device size and power consumption. | 08-05-2010 |
20120041310 | Apparatus, System and Method for Ultrasound Powered Neurotelemetry - The present embodiments provide an apparatus, system, and method for ultrasound powered neurotelemetry. In one embodiment, the apparatus includes a piezoelectric element configured to receive an ultrasonic pulse and convert the electronic pulse into an electric potential. A diode may be coupled to the piezoelectric element, the diode configured to cause an electric current to flow in response to the electric potential. The apparatus may additionally include a reference electrode and a stimulating electrode coupled to the diode. The reference electrode may sense bioelectric activity in a region of body tissue located in proximity to the reference diode. The stimulating electrode may emit a carrier signal, wherein the carrier signal is modulated in response to the bioelectric activity sensed by the reference electrode. | 02-16-2012 |
20120041499 | Neurostimulator - Methods and devices for stimulating nerves are disclosed. In one embodiment adapted for stimulating excitable tissue, the invention includes drive circuitry, an acoustic transducer and a pair of electrodes. | 02-16-2012 |
20120197342 | SYSTEMS, AND METHODS FOR NEUROSTIMULATION AND NEUROTELEMETRY USING SEMICONDUCTOR DIODE SYSTEMS - Methods and systems for neurostimulation and/or neurotelemetry of electrically-excitable biological tissue. Embodiments include implanting single or multiple semiconductor diodes and applying a high frequency electrical volume current. Neurostimulation embodiments include local rectification of the volume current by the diode, which can provide a pulsating electrical waveform capable of locally stimulating neural tissue, hi neurotelemetry embodiments, semiconductor diodes can be placed in contact with excitable tissue and a low level electrical carrier wave can be passed through the tissue and implanted diode whereby low level tissue bioelectric events intermodulate with the carrier wave and encode bioelectrical effects. Remote detection and amplitude demodulation of the volume-conducted carrier wave can allow recovery of the bioelectrical waveform and provide a neurotelemetry function, hi other embodiments, implanted diodes are placed in series with a pressure switch or piezoelectric material which enables their function only with the focal application of an acoustic pressure wave. This enables a selectivity amongst multiple diode channels by acoustic wave focusing or alternately by a process of range-gating of a surface applied electrical current to the arrival time of an acoustic wave at a particular device. | 08-02-2012 |
20130123882 | DIPOLAR ANTENNA SYSTEM AND RELATED METHODS - Some embodiments include a dipolar antenna system to electrically power an implantable miniature device and/or to stimulate bioelectrically excitable tissue. Other related systems and methods are also disclosed. | 05-16-2013 |
20130144361 | Apparatus, Systems, and Methods for Neurostimulation and Neurotelemetry Using Semiconductor Diode Systems - Methods and systems for neurostimulation and/or neurotelemetry of electrically-excitable biological tissue. In one embodiment, a method includes providing a radio frequency output to a diode implanted in biological tissue. The radio frequency output cause current to flow in the diode that is sufficient to provide neurostimulation. Additionally, a radio frequency receiver is configured to receive a second harmonic signal from the diode, which can be used to control the radio frequency output. | 06-06-2013 |
20130324891 | APPARATUS, SYSTEMS, AND METHODS FOR CURRENT MONITORING IN ULTRASOUND POWERED NEUROSTIMULATION - Apparatus, systems, and methods for current monitoring in ultrasound powered neurostimulation. The apparatus may include an ultrasound transmitter configured to emit an ultrasound output directed at a piezoelectric device implanted in biological tissue. The apparatus may also include a detector configured to detect an induced current in response to the ultrasound output in the biological tissue. The piezoelectric device may include a piezoelectric material and a diode. The apparatus may include a feedback mechanism to control the amount of induced current in the biological tissue. | 12-05-2013 |