Famous Patents
The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7704209 | Method and apparatus for continuous pulse contour cardiac output A system and method are provided for sensing cardiac electrogram (EGM) signals and ventricular pressure signals and for using the sensed EGM and sensed pressure signals for estimating stroke volume (SV). A measure of cardiac output can be computed from the estimated... | 04/27/2010 |
| 7302294 | Subcutaneous cardiac sensing and stimulation system employing blood sensor Cardiac systems and methods using ECG and blood information for arrhythmia detection and discrimination. Detection circuitry is configured to produce an ECG. An implantable blood sensor configured to produce a blood sensor signal is coupled to a processor. The proce... | 11/27/2007 |
| 7074189 | Endoscopically deliverable ultrasound imaging system and method of use An ultrasound imaging system has an ultrasound probe adapted to be placed in an instrument working channel of an endoscope, the ultrasound probe having a probe housing; an ultrasound transducer mounted within the probe housing; and an elongate flexible cord extendin... | 07/11/2006 |
| 7048691 | Method and apparatus for assessing hemodynamic parameters within the circulatory system of a living subject An improved method and apparatus for non-invasively assessing one or more hemodynamic parameters associated with the circulatory system of a living organism. In one aspect, the invention comprises a method of measuring a hemodynamic parameter by measuring a non-cali... | 05/23/2006 |
| 7044913 | Ultrasonic diagnosis apparatus An ultrasonic diagnosis apparatus comprises an ultrasound probe, a transmitter (including a transmitting pulse generator and a transmitting beamformer), a receiver (including a preamplifier and a receiving beamformer), a CFM processor (including a moving-element sig... | 05/16/2006 |
| 7037267 | Medical diagnostic methods, systems, and related equipment A medical diagnostic method, system and related equipment particularly adapted to diagnose disorders of the blood circulation serving the head and neck, and especially the brain. A preferred use of the system is early, rapid, accurate, diagnosis of stroke, especiall... | 05/02/2006 |
| 6942617 | Automatic stone-tracking system A tracking system for stone treatment by extracorporeal shock wave lithotripsy includes a data processing unit, a motion controller, a servo-moving platform, a stone image-processing module, a stone localization module, and a moving-mechanism control module. With th... | 09/13/2005 |
| 6912471 | Processing method for a volume dataset A volume dataset describes at least one tubular vessel and its environment. For processing the volume dataset, an operating point is first defined. A computer then determines slice planes containing the operating point and a sectional area enclosed by the vessel and... | 06/28/2005 |
| 6843771 | Ultrasonic monitor for measuring heart rate and blood flow rate The invention provides an ultrasonic monitor for measuring pulse rate values in a living subject, including a module with at least one source of ultrasonic energy, a gel pad comprised of a polymer and from about 50 to about 95% by weight of an ultrasound conductive ... | 01/18/2005 |
| 6782284 | Method and apparatus for semi-automatic aneurysm measurement and stent planning using volume image data An apparatus for measuring parameters preparatory to a stent replacement of an aneurytic blood vessel in a patient (26) includes a computed tomography (CT) scanner (10) that acquires image data (28) corresponding to multiple two-dimensional imag... | 08/24/2004 |
| 6773403 | Ultrasonic apparatus and method for measuring the velocities of human tissues using the doppler effects Apparatuses and methods for measuring a velocity component of tissue and blood flow within a human body may generate sample data by transmitting ultrasound signals to and sampling echo signals reflected from the human body, generate frequency distribution data conta... | 08/10/2004 |
| 6770034 | Ultrasonic diagnostic apparatus The present invention provides an ultrasonic diagnostic apparatus. The ultrasonic diagnostic apparatus comprises an ultrasonic probe (1) for transmitting ultrasonic pulses into a living body and receiving ultrasonic reflected waves from the living body, a pha... | 08/03/2004 |
| 6719697 | Ultrasonic quantification of valvular regurgitant blood flow Valvular regurgitation is assessed by identifying a characteristic regurgitation jet in a colorflow image. An M-line is placed over the region of regurgitation and Doppler M-mode information is acquired from the flow convergence region adjacent the regurgitant orifi... | 04/13/2004 |
| 6689064 | Ultrasound clutter filter A method for adaptive filtering of clutter from a sample stream having a blood signal component and a clutter signal component comprises the steps of (a) estimating a signal strength of the sample stream, and (b) determining an order of a filter based on ... | 02/10/2004 |
| 6663568 | Ultrasound techniques A method of estimating the volume flow in a vessel utilizing ultrasound techniques including the steps of imaging the vessel utilizing an ultrasonic transducer array so as to produce fluid velocity information for the vessel, the plane formed by the beams... | 12/16/2003 |
| 6626838 | Blood flow meter apparatus and method of use A strobed blood flow meter provides periodic measurements of blood flow velocity or volumetric blood flow over a cardiac cycle at reduced average power consumption, which is advantageous for reducing battery size, and extending device battery life, such a... | 09/30/2003 |
| 6595923 | Ultrasonic doppler flow phantom An ultrasonic Doppler flow phantom is described which is formed of tissue-mimicking material containing a plurality of fluid flow paths through which fluid is pumped. The fluid flow paths are made of tubing and each extends over a different portion of the... | 07/22/2003 |
| 6589179 | Three-dimensional doppler ultrasonic imaging system and method An ultrasonic imaging system uses a specially configured scanhead to provide ultrasound return signals that are processed by an imaging unit to generate a three-dimensional Doppler ultrasound image. One embodiment of the scanhead includes a first pair of ... | 07/08/2003 |
| 6425868 | Ultrasonic imaging system An ultrasound imaging system provides for high density scanning (transmit/receive) of color flow signals. The ultrasound scan sequence of each transmitted and received color flow ultrasound beam is laterally spaced through the imaging field to calculate f... | 07/30/2002 |
| 6293914 | Ultrasonic system and method for measurement of fluid flow A system and methods for measuring the volume flow of fluid in an enclosed structure with an ultrasound system is provided. Manual designation of flow angles and areas may not be necessary. Velocities along two or more different scan lines in a first scan... | 09/25/2001 |
| 6287260 | Method and apparatus for improving the accuracy with which the speed of a fluid is measured The present invention relates to a method and associated apparatus for improving the accuracy with which the speed of a fluid, such as a liquid, in particular blood flowing in a duct, such as a blood vessel, in particular the aorta, is measured by means o... | 09/11/2001 |
| 6193667 | Methods of determining the effect(s) of materials, conditions, activities and lifestyles A blood viscosity measuring system and method that monitors the rising head of a column of fluid representing a living being's blood in-vivo to determine the blood viscosity over a range of shears. The system includes a capillary tube, at least a portion ... | 02/27/2001 |
| 6074349 | Acoustic imaging and doppler catheters and guidewires The invention features an acoustic medical device for making Doppler measurements and imaging within a body fluid conduit using a single-transducer. The device has an elongated device body, defining a device axis, constructed for positioning a distal end ... | 06/13/2000 |
| 6045512 | System and method for continuous estimation and display of cardiac ejection fraction and end diastolic volume The cardiac ejection fraction EF is estimated based on the parameters of a model of an indicator (such as thermal) dilution through the heart. A channel model is defined by an upstream indicator injector, such as a heater, positioned preferably in the rig... | 04/04/2000 |
| 6036645 | Ultrasonic probe A probe includes a handle, neck, and sensor head. The neck consists of a stiff portion and a flexible portion. The neck is offset from the handle so that a hand of a surgeon holding the handle does not block the surgeon's view of sensor head. In another e... | 03/14/2000 |
| 5967987 | Ultrasonic system and method for measurement of fluid flow In an ultrasound system and method, a transducer connects to an estimator for obtaining first and second blood flow parameters associated with first and second scan line directions, respectively, in a first scan plane. One beam substantially covering a cr... | 10/19/1999 |
| 5891039 | Ultrasonic echography system including sequencing means for the examination of arteries An ultrasonic echography system includes a probe (1) which is connected to an echograph provided with a transmission stage (32), receiving and processing stages (34, 38) for ultrasonic echo signals, and a device (21) for displaying images of an artery. Th... | 04/06/1999 |
| 5570692 | Ultrasonic doppler blood flow detector for hemorrhoid artery ligation An ultrasonic doppler blood flow detector used for hemorrhoid artery ligation having a hollow insertion cylinder which is enclosed at the distal end and open at the near end, and can be inserted through the anus; the cylinder has an ultrasound transducer ... | 11/05/1996 |
| 5479928 | Ultrasonic method and apparatus for flow measurement An ultrasonic probe for flow rate measurement by the Doppler effect includes at least one wide-beam ultrasound transducer fixed on a support block and at least one narrow-beam ultrasound transducer fixed on a support block and whose beam position is known... | 01/02/1996 |
| 5453575 | Apparatus and method for detecting blood flow in intravascular ultrasonic imaging An apparatus and method are described for imaging blood flow from within a vasculature. An ultrasound catheter probe carrying an ultrasound transducer array is inserted within a blood vessel. The transducer array emits ultrasound excitation signals and re... | 09/26/1995 |
| 5437283 | Endosurgical ultrasonic probe with integrated biopsy actuator A medical endosurgical device is provided having both ultrasonic imaging and biopsy capabilities for easy grasping and manipulation by a surgeon. The medical endosurgical apparatus includes an ultrasonic imaging probe having an insertion portion with an u... | 08/01/1995 |
| 5351693 | Ultrasound probe for use with transport catheter and method of making same A probe for use within a catheter is disclosed. The probe transducer portion is constructed of a crystal hollow cylinder with an inside lead attached to the inner surface of the crystal cylinder. One end of the outside lead is positioned close to the oute... | 10/04/1994 |
| 5305758 | Ultrasonic apparatus for use in obtaining blood flow information The present invention provides an apparatus that is useful in obtaining blood flow information. The device includes a carrier that, in preferred embodiments of the invention, includes either a catheter or guide wire. The device further includes at least o... | 04/26/1994 |
| 5271404 | Method and apparatus for processing signal data to form an envelope on line An apparatus for generating a velocity spectrogram is described. The apparatus includes a transducer which is positionable within a vessel. The transducer receives a time-varying Doppler signal which contains information related to fluid velocity values w... | 12/21/1993 |
| 5246007 | Vascular catheter for measuring flow characteristics and method Vascular catheter for measuring flow characteristics of a liquid in a vessel having a wall and an axis extending longitudinally of the vessel parallel to the vessel wall comprising a flexible elongate tubular member adapted to be introduced into the vesse... | 09/21/1993 |
| 5190045 | Method and device for doppler-guided and imaged retrograde catheterization A method and apparatus for Doppler-guided, imaged intravascular catheterization of a higher mammal includes inserting into a peripheral blood vessel a steerable catheter which has a Doppler ultrasound transceiver at its tip, generating from signals produc... | 03/02/1993 |
| 5144955 | Doppler velocity measuring medical unit A medical probe such as a catheter comprises a flexible, elongated member having distal and proximal ends, with Doppler-type velocity measuring means carried within said probe adjacent said distal end, and electrical wires carried within the probe and com... | 09/08/1992 |
| 5121749 | Position in dependent volumetric flow measuring apparatus Apparatus for measuring the volumetric flow of a liquid in a vessel having a wall and having an axis extending longitudinally of the vessel parallel to the vessel wall. A flexible catheter is provided which has a longitudinal axis adapted to be disposed i... | 06/16/1992 |
| 5105818 | Apparatus, system and method for measuring spatial average velocity and/or volumetric flow of blood in a vessel and screw joint for use therewith System for measuring a characteristic of flow of liquid in a vessel of a patient comprising a transducer positioned in a vessel in a patient for supplying ultrasonic energy. The transducer produces a substantially uniform beam which encompasses the vessel... | 04/21/1992 |
| 5058595 | Judkins-type angiographic catheter with Doppler crystal, and method of use A Judkins-type angiographic catheter adapted to be inserted in a coronary artery for measuring the velocity of coronary blood flow, comprising a tube of flexible relatively soft material having a proximal end and a distal end terminating in a tip, a Doppl... | 10/22/1991 |
