Bizarre Patents
Nicotine Containing Dental Floss
Keep away cavities and cancer at the same time.
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 |
| 5411028 | Device and method for measuring the elasticity of an artery by ultrasonic echography An ultrasonic echograph is used as a profilometer for the measurement of the instantaneous blood flow rate Q(t) and the instantaneous radius variation Ɗr(t) and the mean radius r0 of the artery along a first excitation line A. In accordance wi... | 05/02/1995 |
| 5409009 | Methods for measurement of arterial blood flow A sensor for measurement of one or more parameters of arterial blood flow, located on a transvenously inserted lead. The sensor may be inserted into a vein that is anatomically adjacent to the artery in which blood flow parameters are to be monitored, rat... | 04/25/1995 |
| 5409007 | Filter to reduce speckle artifact in ultrasound imaging A method for reducing speckle artifact in an ultrasound image using a two-dimensional median filter having a diamond-shaped five-point kernel. The entire pixel image data is passed through the filter in a manner such that the center point of the kernel is... | 04/25/1995 |
| 5398216 | Method for detecting two-dimensional flow for ultrasound color flow imaging A triangulation method and apparatus for measuring the velocity of a flowing material at a point of interest along two lines of sight which have different vector components. The flow velocity along two different image vectors is measured simultaneously by... | 03/14/1995 |
| 5383462 | Wideband time-domain cross-correlation method using baseband data A method for estimating the velocity of flow containing a cloud of ultrasound scatterers using time-domain cross-correlation of baseband data. When the scatterers move from one range cell to another between firings, the returning echo signals from adjacen... | 01/24/1995 |
| 5363849 | Enhancing intravascular ultrasonic blood vessel image In an intraluminal ultrasound imaging system, ultrasound echoes representing vessel walls are distinguished from ultrasound echoes from blood by detecting and examining the phase of all received ultrasound echoes, extracting selected parameters from the p... | 11/15/1994 |
| 5363851 | Ultrasound color flow extended velocity estimation A multi-lag method for estimating both high and low velocities of blood flow from a single set of firings in situations where both high-velocity and low-velocity signals are of interest. A color flow processor uses multiple lags in the firing sequence. Th... | 11/15/1994 |
| 5363850 | Method for recognition and reduction of blood speckle in blood vessel imaging system In an ultrasound imaging system, ultrasound echoes representing vessel walls are distinguished from ultrasound echoes from blood by using a classifier which employs the mean and variance of the raw data of gray intensities as acquired directly from an ult... | 11/15/1994 |
| 5360005 | Medical diagnosis device for sensing cardiac activity and blood flow A medical diagnostic method comprises the steps of automatically sensing an acoustic vibration inside a person, converting the sensed acoustic vibration to an electrical signal, amplifying the electrical signal, and converting the amplified electrical sig... | 11/01/1994 |
| 5357965 | Method for controlling adaptive color flow processing using fuzzy logic A color flow processor has a fuzzy logic processor for determining when an adaptive wall filter can be turned off in response to the condition wherein flow signal will be treated as wall signal. The fuzzy logic processor uses details of wall velocity and ... | 10/25/1994 |
| 5349524 | Color flow imaging system utilizing a time domain adaptive wall filter An ultrasonic imaging system for displaying color flow images includes a receiver which demodulates ultrasonic echo signals received by a transducer array and dynamically focuses the baseband echo signals. A color flow processor includes a time domain ada... | 09/20/1994 |
| 5327893 | Detection of cholesterol deposits in arteries A method of diagnosing arterial stenosis from a received Doppler shifted acoustic signal from an artery during multiple heartbeats, each having systolic and diastolic phases uses pattern recognition techniques that are applied to the signal to determine t... | 07/12/1994 |
| 5327894 | Wall filter using circular convolution for a color flow imaging system An ultrasonic imaging system includes a receiver which demodulates the echo signals received by a transducer array and dynamically focuses the baseband echo signals, and a color flow processor which includes an adaptive wall filter in the form of a circul... | 07/12/1994 |
| 5320105 | Ultrasonic echograph for measuring high velocities of blood flows An echograph includes a transmission stage (20), a circuit (31) for suppressing fixed echos, and a correlation-interpolation circuit (33). The the transmission stage (20) transmits a pulsed signal having two neighboring, alternating recurrent periods T1 | 06/14/1994 |
| 5316001 | Cardiac measurement system for measuring blood flow velocity by use of a sensor implanted inside the heart A cardiac electrotherapy system has flow velocity measurement capability for measuring a velocity of blood flow at a region of a tricuspid valve of a heart. A pacing system is provided which outputs a pacing electrical signal to the heart. A control unit ... | 05/31/1994 |
| 5305753 | Method and apparatus for determining the velocity of a flowing liquid Calculation of the two-dimensional velocity vector of liquid flowing through a region which is imaged in a B-mode ultrasonic echoscopy display involves dividing the region into a number of small, preferably rectangular, cells. One of the cells is scanned ... | 04/26/1994 |
| 5291892 | Ultrasonic flow imaging A phased array sector scanning ultrasonic imaging system produces simultaneously, and samples, three receive beams for each transmitted ultrasonic pulse directed upon flowing reflectors. Flow velocity is measured in the cross range direction using a corre... | 03/08/1994 |
| 5289821 | Method of ultrasonic Doppler monitoring of blood flow in a blood vessel A method of employing ultrasonic Doppler monitoring of blood flow in a patient's blood vessel includes, providing an ultrasonic transducer operatively associated with an ultrasonic processor by connection through an electrically conductive wire. The ultra... | 03/01/1994 |
| 5284148 | Intracavity ultrasound diagnostic probe using fiber acoustic waveguides An intracavity ultrasound diagnostic probe has a fiber acoustic waveguide that guides acoustic signals generated by a piezoelectric transducer located outside the body, through a body cavity and to an imaging site within the body where they reflect back i... | 02/08/1994 |
| 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 |
| 5267565 | Method and apparatus for determining the patency of a blood vessel A method and apparatus for testing the vascular condition of a patient including applying a pulsatile waveform to a part of a patient's body, observing the resultant blood flow at a location spaced from the point of application, and comparing the observed... | 12/07/1993 |
| 5261407 | Ultrasonic doppler blood-flow meter There is provided an ultrasonic Doppler blood-flow meter which can suppress the occurrence of unwanted frequency components by suppressing the jump of signal to thereby produce images of high quality A DC feedback circuit is provided which negatively feed... | 11/16/1993 |
| 5261280 | Tissue signature tracking transceiver An ultrasound transceiver providing enhanced imaging by selective filtering of the received signal to provide a variable frequency, constant bandwidth filtering of the received echo signals. The resulting signals are then detected to produce a signal, whi... | 11/16/1993 |
| 5233994 | Detection of tissue abnormality through blood perfusion differentiation A method for accentuating the differences in blood perfusion between normal and tumorous tissue is provided which comprises the steps of measuring the blood perfusion in a local area of the body, heating the local area, then measuring the blood perfusion ... | 08/10/1993 |
| 5231573 | Method and system for acquiring flow velocities in ultrasound diagnosis apparatus In an ultrasound diagnosis apparatus, a plurality of transducers arranged in an ultrasound probe are classified into two transducer groups. By using a parallel simultaneous reception method, ultrasound beams from an observation point of an object to be ex... | 07/27/1993 |
| 5224482 | Ultrasound high velocity flow correlation measurement using coded pulses An ultrasound high velocity flow measurement apparatus uses cross-correlation between consecutive echoes of coded pulses which are matched filtered at the receiver to determine velocity profiles of flowing blood. Because coded pulses are used, the interva... | 07/06/1993 |
| 5215094 | Ultrasonic flow velocity imaging systems with velocity image presistence An ultrasonic diagnostic imaging system is described which enhances the presentation of flow velocity images through asymmetric persistence of visually displayed changes in fluid velocity. Preferably the asymmetric persistence employs a shorter (i.e., fas... | 06/01/1993 |
| 5211169 | Blood pool imaging and analysis technique using ultrasound A blood pool imaging and analysis technique and apparatus uses ultrasound to examine areas of interest within the human body. The Doppler effect is used to determine the velocity of blood and tissue movement. Color flow imaging is used to display the movi... | 05/18/1993 |
| 5207226 | Device and method for measurement of blood flow A device and method for measuring fluid flow within a vessel having fluctuating elastic walls, such as, for example, an artery. The device includes a catheter; an internal stablizer or frame for establishing an invariant cross-section in the vessel wall; ... | 05/04/1993 |
| 5197477 | Ultrasonic Doppler flow measurement system with tissue motion discrimination An ultrasonic diagnostic system for measuring fluid flow velocities through Doppler techniques is provided which eliminates the effects of tissue motion from fluid flow velocity information. In a preferred embodiment Doppler information signal are discrim... | 03/30/1993 |
| 5195519 | Miniaturized mechanically-steerable ultrasonic probe A miniaturized ultrasonic probe includes a housing encasing a motor, an ultrasonic transducer mounted for controlled rotation on the motor shaft, and an angular position sensor connected to the shaft. The housing has a radiating dome about the transducer ... | 03/23/1993 |
| 5188106 | Method and apparatus for chronically monitoring the hemodynamic state of a patient using doppler ultrasound A hemodynamic control apparatus and method for regulating blood flow within the cardiovascular system in a closed-loop control system using ultrasound measurement techniques to determine a hemodynamic status of the patient and to derive a control paramete... | 02/23/1993 |
| 5168877 | Ultrasonic diagnostic apparatus An object of the present invention is to obtain an ultrasonic diagnostic apparatus including a CFM system which is designed so that the algorithm for computing a flow velocity or the like can be changed easily. The ultrasonic diagnostic apparatus according to ... | 12/08/1992 |
| 5156152 | Ultrasonic diagnosing apparatus An ultrasonic diagnosing apparatus displaying blood flow data. A Doppler shift signal is detected from a reception signal obtained by an ultrasonic transducer by transmitting/receiving an ultrasonic wave to/from an object. Doppler data obtained from this ... | 10/20/1992 |
| 5152291 | Acoustic fiber measurement of intravascular blood One or more acoustic fiber guides are used to carry certain modes of acoustic energy to the tip of a catheter. Using these fibers, reflected sound (Doppler Sound) measurements are made in a blood environment without the risk to the patient associated with... | 10/06/1992 |
| 5152292 | Adaptive rejection filter for color flow ultrasound imaging An adaptive flash rejection filter for a color flow imaging apparatus uses a flash strength identifier to make an initial determination of flash content. The identifier assigns a flash strength to each signal portion of a scan line according to a velocity... | 10/06/1992 |
| 5127409 | Ultrasound Doppler position sensing A method of position sensing using ultrasound that allows unconstrained motion of a scanhead or sensing probe. Combined with ultrasound echo sensing, a static, B-mode ultrasound imaging system is obtained that does not require mechanical arms or similar s... | 07/07/1992 |
| 5119821 | Diverging signal tandem doppler probe A dual transducer probe for measuring blood flow by Doppler effect measurement in which quantitative flow data can be compiled and flow constriction points as small as 10% and less can be pinpointed with relative ease. The probe is formed with two transdu... | 06/09/1992 |
| 5107840 | Device for measuring and displaying of ultrasonic echography the flow rate of a blood flow and the dilation of the associated vessel The blood flow rate Q(t) is obtained from a first unit (300) measuring the speed V(t, z), z being the depth of examination, independent of the frequency of the ultrasonic wave used. In a similar manner a second measuring unit (500) enables the measurement... | 04/28/1992 |
| 5105815 | Non-invasive monitoring of cardiac output A device for positioning/retaining a transducer relative to a body characterized in that it comprises a supporting member for placement on the body, connected thereto one end of a flexible and elongate arm, which has a mount for the transducer at or near ... | 04/21/1992 |
