Patents Examined by Ali Imam
  • Patent number: 6969353
    Abstract: Systems and methods for enhanced color-flow imaging of contrast-agent perfused blood vessels and other tissues within a patient's body are disclosed. The method generally comprises, introducing one or more contrast agents into the body, power-modulating transmit pulses into the body, receiving echoes from the body, processing the received echoes to reduce tissue-generated echoes and echoes from stationary contrast agent, using a color-flow processor to generate a color-encoded display responsive to contrast-agent motion. The method may be implemented by a system with a an excitation-signal source, a transducer, an ultrasound-processing system having multiple image processors including a color-flow processor, as well as, a clutter filter, and an arbiter, and a display-processing system.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: November 29, 2005
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: George A. Brock-Fisher, Jodi L.T. Perry, Patrick G. Rafter, McKee Dunn Poland
  • Patent number: 6968223
    Abstract: A system and method of controlling a medical device through voice commands is provided that includes an input unit, such as a microphone, for receiving a voice command identifying a function associated with one of a diagnostic and interventional procedure. The system also includes a control module for directing a medical device to perform the function based on the voice command. The system includes a voice decoder that decodes the voice command into a basic signal, and a protocol translator that converts the basic signal into a signal code associated with the voice command. The control module also includes a processing unit. The control module receives the signal code and the processing unit directs the medical device to perform the function designated by the signal code.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: November 22, 2005
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventor: Barry Keith Hanover
  • Patent number: 6968224
    Abstract: A surgical instrument navigation system comprises an ultrasound machine and a computer coupled to the ultrasound machine. A memory is coupled to the computer and includes computer instructions that when executed by the computer cause the computer to generate an icon representing the surgical instrument with a tip and the surgical instrument's trajectory and to overlay the icon on a real-time ultrasound image having an image plane, such that when the surgical instrument crosses the ultrasound image plane the format of the surgical instrument's trajectory is changed to represent the surgical instrument's crossing of the ultrasound image's plane. The system also comprises a localizer coupled to the ultrasound machine, and a display coupled to the computer for displaying the generated icon superimposed on the real-time image.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: November 22, 2005
    Assignee: Surgical Navigation Technologies, Inc.
    Inventors: Paul Kessman, Troy Holsing, Jason Trobaugh
  • Patent number: 6964639
    Abstract: A system and method of mapping irregularities of hard tissue. The method includes repeatedly transmitting ultra-sonic energy towards the hard tissue at a first angle of incidence, registering the origin of transmission if an echo-reflection the hard tissue is received, defining the origin of transmission in six degrees of freedom, calculating position co-ordinates for a point causing the echo-reflection and changing the origin of transmission. The method further includes compiling position co-ordinates to generate a map of the irregularities in the surface of the hard tissue. The system includes at least one ultrasonic transducer, a central processing unit and a position locator and adjustment mechanism operably connectable and configured to accomplish the disclosed method.
    Type: Grant
    Filed: January 5, 2003
    Date of Patent: November 15, 2005
    Assignee: GE Medical Systems Israel LTD
    Inventors: Natan Sela, Shmuel Bukshpan, Michael Kardash, Lior Cohen
  • Patent number: 6960169
    Abstract: Contrast agent imaging uses spread spectrum coding. The contrast-to-tissue ratio and signal-to-noise ratio for contrast agent imaging is improved by transmitting a waveform with pulses at two or more frequencies. In one embodiment, signals received at an intermodulation frequency responsive to the two transmitted frequencies are isolated and used for imaging. As a result of the differences in responses of contrast agent and tissue to the frequency transitions between pulses, information from contrast agent with minimal influence from tissue is identified. In another embodiment, two waveforms with pulses at two or more frequencies are sequentially transmitted.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: November 1, 2005
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Zuhua Mao, Hui Jiang, Patrick Von Behren
  • Patent number: 6958041
    Abstract: An ultrasonic imaging arrangement performs tentative scanning of ultrasound to the inside of a living body with delay time corresponding to average sonic velocity, calculates delay time error in a delay time error detecting circuit by using received signals from each channel to which delay control has been performed in a digital delay circuit, compares in a delay time comparing unit the calculated data with a plurality of delay time error data corresponding to various sonic velocities using sound velocity as the parameter stored before hand in a sound velocity-derived delay time error storing unit, selects among those sonic velocities the one matching the delay time error data with a sonic velocity selecting unit, and calculates the sonic velocity within the living body. The calculated sonic velocity is fed back to CPU, and the delay data on the delay applied in the ultrasonic scanning is provided to a delay circuit.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: October 25, 2005
    Assignee: Hitachi Medical Corporation
    Inventors: Hirotaka Baba, Ryuichi Shinomura, Yutaka Sato, Yuichi Miwa
  • Patent number: 6958040
    Abstract: A catheter system for delivering ultrasonic energy and a therapeutic compound to a treatment site within a patient's vasculature comprises a tubular body. The tubular body has a proximal end, a distal end and an energy delivery section positioned between the proximal end and the distal end. The catheter system further comprises an inner core configured for insertion into the tubular body. The inner core has an outer surface and comprises an electrically conductive core material. The catheter system further comprises a plurality of ultrasound radiating members positioned on the outer surface of the inner core. The ultrasound radiating members are electrically connected to the electrically conductive core material. The catheter system further comprises an electrically conductive tube-shaped member disposed over the inner core and over the ultrasound radiating members positioned thereon.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: October 25, 2005
    Assignee: Ekos Corporation
    Inventors: Leonard R. Oliver, Richard R. Wilson
  • Patent number: 6957096
    Abstract: A method and processing device are presented for reconstructing an absorption and/or scattering image of a region of interest inside a scattering medium. A mathematical model is provided being representative of a relation between the distribution of the intensity and phase of electromagnetic radiation components scattered from a medium and a certain attenuation factor, which is function of spatial variations of scattering and absorption coefficients of the medium. The mathematical is used for processing a map of distribution of the intensity of electromagnetic radiation components scattered from known locations within the region of interest, thereby producing a halftone pattern of the region of interest.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: October 18, 2005
    Assignee: The State of Israel, Atomic Energy Commission, Soreq nuclear Research Center
    Inventors: Bruno Gad Sfez, Erel Granot, Aner Lev, Zvi Kotler
  • Patent number: 6951544
    Abstract: A remote palpation technique in breast imaging involves the use of multiple applications of radiation force in rapid succession throughout a two-dimensional plane in the target tissue medium (10), and combination of the small, two-dimensional displacement maps from each force location into a single, larger remote palpation image (block 43). Apparatus for carrying out the foregoing method is also disclosed.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: October 4, 2005
    Assignee: Duke University
    Inventors: Gregg E. Trahey, Kathryn R. Nightingale, Roger W. Nightingale, Mark Palmeri
  • Patent number: 6951540
    Abstract: Systems and/or methods provide for ultrasound imaging through the use of a dynamic non-linear post-beamforming filter (e.g., based on a pth-order Volterra model) capable of separating the linear and non-linear components of image data. A coefficient identification algorithm for deriving coefficients for filter is also provided.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: October 4, 2005
    Assignee: Regents of the University of Minnesota
    Inventors: Emad S. Ebbini, Pornchai Phukpattaranont
  • Patent number: 6950693
    Abstract: Apparatus for recording a thermooptical image of the female breast with a casing, a thermooptical foil, a cooling box, a thermostat, an illuminating system, a digital camera, a clamping device, a contact producing device, a timing system and a release mechanism for automatic release of the digital camera.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: September 27, 2005
    Inventor: Heinrich Wehberg
  • Patent number: 6945937
    Abstract: An apparatus and method for using ultrasound augmented with microbubbles, thrombolytic drugs or other agents for clot lysis wherein at least one ultrasound transducer generates a plurality of acoustic signals and time, amplitude, phase and frequency modulation of the signals provide more uniform power delivery with fewer gaps in the ultrasound field. Interference patterns from one or multiple transducers are constantly shifted in position. A phased array of transducers may generate a beam that is swept over the area to be treated. In another embodiment, an array of transducers may generate ultrasound at a number of slightly varying frequencies to produce an interference pattern that sweeps in and out through the targeted tissue. A single array may be used to produce both effects simultaneously or separately.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: September 20, 2005
    Assignee: Board of Trustees University of Arkansas
    Inventors: William C. Culp, James D. Wilson
  • Patent number: 6947785
    Abstract: A mapping catheter is positioned in a heart chamber, and active electrode sites are activated to impose an electric field within the chamber. The blood volume and wall motion modulates the electric field, which is detected by passive electrode sites on the preferred catheter. Electrophysiology measurements, as well as geometry measurements, are taken from the passive electrodes and used to display a map of intrinsic heart activity.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: September 20, 2005
    Inventors: Graydon Ernest Beatty, Jonathan Kagan, Jeffrey Robert Budd, John Anderson Hauck
  • Patent number: 6942620
    Abstract: An ultrasound system has an ultrasound transducer having a transducer housing and a horn provided at the distal end of the transducer housing, an ultrasound transmission member, a sonic connector that is connected to the horn and the proximal end of the ultrasound transmission member, and a catheter knob having a proximal end that is coupled to the distal end of the transducer housing. The catheter knob has a proximal bore that houses the sonic connector. The system also includes a nesting piece that is retained inside the proximal bore of the catheter knob. The nesting piece can be moved from a first position where the sonic connector is received inside the nesting piece to a second position where the sonic connector is separated from the nesting piece when ultrasound energy is being propagated through the ultrasound transmission member.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: September 13, 2005
    Assignee: Flowcardia Inc
    Inventors: Henry Nita, Martinos Tran
  • Patent number: 6942618
    Abstract: Medical image processing is adaptively optimized in response to selective types of changes or motion. Adaptive optimization is applied in response to limited types of motion or at a controlled time. For example, one type of change, such as change due to heart motion or breathing motion, is distinguished from a different type of change, such as change due to repositioning of an imaging plane within a patient. Imaging parameters are adaptively optimized in response to changes of one type independent of or with minimized contribution from changes of the different type. For example, change due to repositioning of the image plane is detected while accounting for heart motion or breathing motion. Imaging parameters are adaptively optimized once the change due to anatomical motion is removed or accounted for and after detecting a change in an imaging plane position. Any of various adaptive optimizations may be responsive to the identification of one type of change from another type of change.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: September 13, 2005
    Assignee: Siemens Medical Solutions U.S.A., Inc.
    Inventor: Constantine Simopoulos
  • Patent number: 6942619
    Abstract: An ultrasound radiation device comprises a piezoelectric substrate, an interdigital arrangement of two comb-shaped electrodes formed on an upper end surface of the piezoelectric substrate, a counter electrode formed on a lower end surface of the piezoelectric substrate, an interdigital transducer formed on said upper end surface of said piezoelectric substrate, and an amplifier between one of the two comb-shaped electrodes and the interdigital transducer. If an electric signal is applied between the counter electrode and one of the two comb-shaped electrodes, a longitudinal wave composed of the main lobe and grating lobes is radiated into a material in contact with the counter electrode, as well as a Lamb wave is excited in the piezoelectric substrate. The Lamb wave is detected as a delayed electric signal at the interdigital transducer. The delayed electric signal is amplified by the amplifier, and used as an input electric signal again.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: September 13, 2005
    Inventor: Kohji Toda
  • Patent number: 6939302
    Abstract: A system for delivery of a medium having ultrasound contrast enhancement agents therein to a patient includes a pressurizing device for pressurizing the medium, a fluid path connecting the pressurizing device to the patient and a concentration sensor in communication with the fluid path. The concentration of the contrast enhancement agents is measured by the concentration sensor during injection of the medium into the patient to assist in controlling the delivery system and/or an imaging procedure.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: September 6, 2005
    Assignee: MEDRAD, Inc.
    Inventors: David M. Griffiths, Arthur E. Uber, III
  • Patent number: 6941164
    Abstract: A multimodality imaging system including a plurality of imaging systems, and at least one rail upon which at least one of the imaging systems is slidingly mounted.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: September 6, 2005
    Assignee: Elgems Ltd.
    Inventors: Benny Hajaj, Hernan Altman, Sergio Steinfeld, Yaron Hefetz
  • Patent number: 6932770
    Abstract: A method for reducing speckle in an ultrasonic image formed from a digitized scan line including linearly arranged signal intensity data points obtained from ultrasonic energy reflected by structures within a body. The scan line is divided into intensity pixels. Each intensity pixel includes at least one data point. A raw intensity level and a feature gain factor are determined for each intensity pixel. A corrected intensity level is calculated for each intensity pixel by multiplying the raw intensity level for each intensity pixel by the corresponding feature gain factor. The corrected intensity level of each intensity pixel is displayed.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: August 23, 2005
    Assignee: Prisma Medical Technologies LLC
    Inventors: Harold M. Hastings, Steven J. L. Evans, Scott L. Roth
  • Patent number: 6932769
    Abstract: An ultrasonic occupant detection and classification system transmits an ultrasonic signal and receives a composite signal containing interference created between the transmitted ultrasonic signal and a reflection of that signal from a moving occupant. A signal component of the received, composite signal is extracted by amplitude demodulation and bandpass filtered to derive a frequency characteristic that is compared to stored frequency data; and the derived and stored data are compared to identify frequencies characteristic of respiration and/or other movements characteristic of living beings.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: August 23, 2005
    Assignee: Delphi Technologies, Inc.
    Inventors: Dennis P. Griffin, William W. Fultz