Matches 1 - 45 out of 45
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7621876 Continuous, non-invasive technique for determining blood pressure using a transmission line model and transcutaneous ultrasound measurements  
A method and technique for the continuous, non-invasive measurement of blood pressure. The blood pressure measurement technique of the present invention utilizes ultrasound measurements to...
7547282 Ultrasonic monitor for measuring heart and pulse rates  
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...
7493219 Method of discriminating particle groups and particle analyzer  
A method for discriminating particle groups comprises generating, by a particle analyzer, a particle characteristic distribution histogram in which the abscissa indicates respective channels for...
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...
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...
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...
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...
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...
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...
6786917 Method and device for producing a helper signal  
With a method and a device for producing a helper signal for determining the point in time for a defibrillation or a cardiac massage given a cardiac arrest, the value (W) of the blood flow (B) into...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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....
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....
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,...
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...
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...
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...
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...
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...
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...
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....
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...
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...
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...
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...
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...
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...
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...
5054492 Ultrasonic imaging catheter having rotational image correlation  
An ultrasonic imaging catheter comprises a catheter body having a distal end and a proximal end. An ultrasonic imaging transducer is located within the distal end and is arranged to produce an...
4967753 Apparatus, system and method for measuring spatial average velocity and/or volumetric flow of blood in a vessel  
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...
4957111 Method of using a doppler catheter  
A steerable catheter having a Doppler crystal at the tip to measure the velocity of blood in vivo--and inferentially the blood flow. The catheter includes two passageways, one passageway being...
4920967 Doppler tip wire guide  
An invasive, fluid velocity measuring wire guide particularly adapted and of a size (less than 0.030 inch) for subselective placement in the coronary arterial tree, which includes a Doppler...
4733669 Blood flow measurement catheter  
A catheter having a mechanism for positioning a doppler shift transducer carried by the catheter against a side wall of a blood vessel. A portion of the catheter near the distal end is adjustable...
4722347 Apparatus for measuring cardiac output  
Blood flow in the aorta and pulmonary artery of a mammal, most typically a human, is measured volumetrically by a non-invasive, ultrasound apparatus. A piezoelectric ultrasound transducer mounted...
4671295 Method for measuring cardiac output  
Blood flow in the aorta and pulmonary artery of a mammal, most typically a human, is measured volumetrically by a non-invasive, ultrasound method and apparatus. The method comprises placing a...
4259870 Doppler method of measuring flow  
A method of determining the volume flow of a fluid through a conduit usable with a single crystal, whereby at least one of the fluid and the conduit have energy-scattering interfaces. The method in...
Matches 1 - 45 out of 45