Patent application number | Description | Published |
20080272428 | Semiconductor Device Structure With a Tapered Field Plate and Cylindrical Drift Region Geometry - A vertically oriented self terminating discrete trench MOS device ( | 11-06-2008 |
20080281202 | Transducer Cuff for Guidance and Application of High Intensity Focused Ultrasound for Control of Bleeding Due to Severed Limbs - An ultrasonic diagnostic and therapy system is described for stopping the bleeding of severely damaged blood vessels or vessels severed in a limb amputation. A cuff ( | 11-13-2008 |
20080306414 | Method and Apparatus for Guidance and Application of High Intensity Focused Ultrasound for Control of Bleeding Due to Severed Limbs - An ultrasonic diagnostic and therapy system is described for stopping the bleeding of severely damaged blood vessels or vessels severed in a limb amputation. A cuff ( | 12-11-2008 |
20080312562 | Method and Apparatus for Guidance and Application of High Intensity Focused Ultrasound for Control of Bleeding Due to Severed Limbs - An ultrasonic diagnostic and therapy system is described for stopping the bleeding of severely damaged blood vessels or vessels severed in a limb amputation. A cuff is attached to the stump of the severed limb which contains a diagnostic transducer array and a HIFU transducer. The diagnostic transducer surveys the tissue of the severed limb, searching for a Doppler flow signal. When a Doppler flow signal is detected, the range to and coordinates of the sample volume where the flow was detected are determined, as well as the flow velocity. This information is supplied to a HIFU therapy transducer controller, which controls the HIFU transducer to transmit focused ultrasound to the sample volume of the flow locus, the center of the lumen of a blood vessel. The focused ultrasound heats and coagulates blood in the severed vessel to stem the bleeding. Heat dissipation due to the blood flow is reduced by tracking and continuously heating the same bolus of blood as it flows, or by heating a significant length of the blood vessel instead of a fixed spot in the vessel. | 12-18-2008 |
20100274130 | SYSTEMS AND METHODS FOR TRACKING AND GUIDING HIGH INTENSITY FOCUSED ULTRASOUND BEAMS - The present disclosure provides systems and methods for tracking and guiding high intensity focused ultrasound beams (HIFU). More particularly, the disclosed systems and methods involve use of acoustic radiation force impulse (ARFI) imaging to detect the focal position of an HIFU capable transducer relative to a target area. The focal position may then be 5 compared to a desired treatment location and the orientation and focus of the transducer may be adjusted accordingly so as to reconfigure and/or refocus the HIFU beam relative to the desired treatment location. The desired treatment location may be dynamically determined using bleed detection and localization (BD&L) techniques. Thus, the desired treatment location may be determined using 3D Doppler ultrasound based techniques, wherein changes in quantitative 10 parameters extracted from the Doppler spectra, e.g., Resistance Index (RI), are used to detect and localize a bleeding site for treatment. | 10-28-2010 |
20110040189 | COLLAPSED MODE OPERABLE CMUT INCLUDING CONTOURED SUBSTRATE - A capacitive ultrasound transducer capable of operation in collapsed mode either with a reduced bias voltage, or with no bias voltage, is provided. The transducer includes a substrate that is contoured so that a middle region of the flexible membrane is collapsed against the substrate in the absence of a bias voltage. A non-collapsible gap may exists between the substrate and peripheral regions of the flexible membrane. The contour of the substrate may be such as to strain the flexible membrane past the point of collapse, or to mechanically interfere with the flexible membrane. The substrate may include a further membrane disposed beneath the flexible membrane, the further membrane being contoured so that the flexible membrane is collapsed against it. The substrate may a support disposed beneath the further membrane to deflect a corresponding portion of the further membrane upward toward the flexible membrane. The support may be a post. The transducer may be operated in collapse mode with an improved efficiency (k | 02-17-2011 |
20110251529 | REAL-TIME ABLATION MONITORING FOR DESIRED LESION SIZE - An ablation control device ( | 10-13-2011 |
20120086789 | IMAGING SYSTEM FOR IMAGING A VISCOELASTIC MEDIUM - An imaging system for imaging a viscoelastic medium is disclosed. The imaging system comprises a variable refractive lens ( | 04-12-2012 |
20130096597 | REAL-TIME MONITORING AND CONTROL OF HIFU THERAPY IN MULTIPLE DIMENSIONS - Energy is transferred ( | 04-18-2013 |
20130274607 | AUTOMATED DOPPLER VELOCIMETRY USING A LOW-COST TRANSDUCER - An automatic, stand-alone, hand-held ultrasound blood-vessel examination device ( | 10-17-2013 |
20140180114 | METHOD AND DEVICE FOR DETECTING OCCLUSION/REOPENING OF AN ARTERY AND SYSTEM FOR MEASURING SYSTOLIC BLOOD PRESSURE - This invention provides a method and a device for detecting occlusion and/or reopening of an artery of a body caused by a changing pressure applied on the artery as well as a system for measuring the systolic blood pressure of an artery of a body. The method comprises the steps of: obtaining a blood flow signal indicative of a change of the blood flow in the artery caused by the changing pressure, using a Doppler Ultrasound transducer attached to the exterior of the body; deriving, from the blood flow signal, at least one variable of a first variable indicative of the magnitude of the blood flow and a second variable indicative of the periodicity of the blood flow; and detecting the occlusion and/or reopening of the artery on the basis of the at least one variable. In this way, the occlusion/reopening of the artery can be detected automatically. Since the need to manually detect the occlusion and reopening of the artery by listening with a stethoscope or a Doppler probe is eliminated, the detecting result is more predictable and repeatable, and therefore also more accurate. | 06-26-2014 |
20140243673 | EXCITATION SCHEMES FOR LOW-COST TRANSDUCER ARRAYS - A device images time-wise in parallel using transducer elements of a group ( | 08-28-2014 |
20140343431 | AUTOMATIC BLOOD VESSEL IDENTIFICATION BY NAME - A device is configured for interrogating a blood vessel to derive flow characteristics (S | 11-20-2014 |
20140350405 | SYSTEM AND METHOD FOR IDENTIFYING HIGH RISK PREGNANCIES - Method, system and software product for identifying high risk pregnancies comprising the step of generating a spectrogram from ultrasound Doppler signals reflected from the uterine artery and determining the maximum frequency envelope of said spectrogram, and of defining a systolic part and a diastolic part of the maximum frequency envelope and calculating an area ratio under said systolic and diastolic part (AR). This area ratio relates to the blood volume in the uterine artery. | 11-27-2014 |
20140358000 | AUTOMATED DOPPLER PULSE CYCLE SELECTION | 12-04-2014 |