Patents Examined by Maulin Patel
  • Patent number: 6974416
    Abstract: Disclosed is ultrasonic medical probe (10) connectable to a Doppler signal generator and processor for detecting or measuring blood flow in a vessel. In one embodiment, the distal portion (52) of the probe comprises an outer sheath (17) that includes a malleable shapeable portion (16), such as an annealed stainless steel cannula, to which a transducer head (11) containing one or more ultrasonic transducers (12), is mounted distally. Two wires (14, 15), comprising the electrical conductor (13), extend through the outer sheath from each ultrasonic transducer to a proximal connector (19). The shapeable portion can be contoured before or during a procedure, such as to access the natural spaces within brain to read flow in a cerebral artery.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: December 13, 2005
    Assignee: Cook Vascular Incorporated
    Inventors: Robert Booker, Chun Kee Lui, Bill Boyle
  • Patent number: 6863653
    Abstract: An apparatus for treatment of body tissue includes a treatment apparatus configured to be inserted into a patient. The treatment apparatus has a distal portion, a distal end, a proximal portion and an axis. An ultrasound transducer is positioned at the distal portion of the treatment apparatus. The ultrasound transducer includes a distal ultrasound energy delivery surface and a proximal ultrasound energy delivery surface. An ultrasound energy attenuator member is positioned adjacent to the proximal ultrasound energy delivery surface and is made of a material to at least partially attenuate ultrasound energy from the proximal ultrasound energy delivery surface.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: March 8, 2005
    Inventors: Claudio I. Zanelli, Michael J. Rosinko, Gregg W. Stone, Steven A. Daniel
  • Patent number: 6773399
    Abstract: Systems and methods of generating and manipulating an ultrasound beam are disclosed. The methods include using selective sets of ultrasound elements to generate an ultrasound beam, scanning the beam over a series of ultrasound elements in order to collected echo data covering an area, and generating an image from the resulting data. The scanning process includes shifting the set of ultrasound elements used to form the ultrasound beam by more then one ultrasound element (block-switching) between each step in the scanning process. This is accomplished without loss of image resolution by using area-forming techniques. The block-switching technique enables use of cross-correlation methods during image construction.
    Type: Grant
    Filed: October 20, 2001
    Date of Patent: August 10, 2004
    Assignee: Zonare Medical Systems, Inc.
    Inventors: Xufeng Xi, Glen McLaughlin, Umit Tarakci
  • Patent number: 6773401
    Abstract: The use of any micro-mechanical component in an ultrasound system is disclosed. In particular, the use of micro-relays, micro-switches and inductors in the transducer probe head, in the transducer connector, coupled with the system transducer connector(s) or anywhere else in the system. In an ultrasound system, micro-mechanical components such as micro-fabricated switches, relays and inductors permit impressive size reduction, cost reduction, signal-integrity enhancement and improved operational flexibility.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: August 10, 2004
    Assignee: Acuson Corp.
    Inventors: William R. Dreschel, Terry Kling, John W. Sliwa, Stuart L. Carp
  • Patent number: 6770031
    Abstract: A method of delivering ultrasound signals includes providing an image of at least a portion of a subject intended to receive ultrasound signals between sources of the ultrasound signals and a desired region of the subject for receiving focused ultrasound signals, identifying, from the image, physical characteristics of portions of material between the sources and the desired region, and using a spectral propagation analysis to determine at least one of phase corrections and amplitude corrections for the sources depending on the respective physical characteristics of the portions of the material disposed between each source and the desired region.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: August 3, 2004
    Assignee: Brigham and Women's Hospital, Inc.
    Inventors: Kullervo Hynynen, Gregory T. Clement
  • Patent number: 6758816
    Abstract: There is provided a pulse wave detector enabling pulse wave detection with reduced power consumption, and prolonged usage time. Ultrasonic waves having a frequency of 10 MHz are transmitted from a transmitter towards an artery, and reflected waves that have undergone frequency modulation as a result of the Doppler effect of the artery are received by a receiver, pulse waves are extracted by FM detection, and a pulse rate is counted and displayed. Transmission of ultrasonic waves by the transmitter and reception of reflected waves by the receiver are carried intermittently at a frequency of 64 Hz to reduce the power consumption, to enable installation even in a small portable device with low battery capacity such as a watch, and to enable prolonged usage time.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: July 6, 2004
    Assignee: Seiko Instruments Inc.
    Inventors: Keisuke Tsubata, Hiroshi Odagiri, Chiaki Nakamura, Kazumi Sakumoto, Masataka Shinogi, Takashi Kamimoto
  • Patent number: 6740036
    Abstract: An apparatus and method to assess the compressibility, density, and hematocrit of blood including an optical ultrasound probe clipped onto tubing in which blood is flowing. The probe includes a combination of ultrasound transducers, a light emitting diode, and photodiodes. An indicator medium is injected into the bloodstream of the subject over one or more time points. Ultrasound waves are emitted by a transducer and received by another transducer, and a novel signal-processing unit and a computer with a novel computation scheme process the ultrasound signals to assess the phase shift of ultrasound as it transmitted across the blood stream. Based on the linear relationship between compressibility and density, changes in blood density are calculated from changes in phase shift. The optical part of the probe assesses the hematocrit of blood. Two fluid media are used to calibrate the probe on the relationship between phase shift and density in the factory.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: May 25, 2004
    Inventors: Lian-Pin Lee, Jen-Shih Lee
  • Patent number: 6733456
    Abstract: The present invention provides catheter systems and imaging assemblies using off-aperture electrical connections for ultrasound transducers. In one embodiment, a catheter includes a transducer connection apparatus (10) comprising a washer (12) having a hole (15) therethrough. A transducer element (24) is at least partially disposed within the washer hole. A matching layer (26) is operably attached to the washer and to the transducer element. The washer, transducer element and matching layer provide an electrical connection between the transducer element and the washer. Signals can be sent to and received from the transducer by establishing an electrical connection with the washer.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: May 11, 2004
    Assignee: SciMed Life Systems, Inc.
    Inventors: Veijo T. Suorsa, David A. White
  • Patent number: 6702747
    Abstract: An acoustically generated image includes only selected acoustical components. When an original acoustic signal interacts with an object, the resultant acoustic signal comprises a diffracted component and an undiffracted component. The acoustical images of the present invention are generated with either the diffracted component only or the undiffracted component only. In an alternative embodiment, the acoustically generated image may comprise selected frequency component(s) from the diffracted component of the acoustic signal.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: March 9, 2004
    Assignee: Advanced Imaging Technologies, II LLC
    Inventor: George F. Garlick
  • Patent number: 6692442
    Abstract: The present invention relates to a] A device for producing an image of a body part into which a contrasting agent has been introduced, the device including an image detecting device modifying the contrasting agent to provide a modified image, and a processor acquiring and processing the modified image so as to create an image which represents a rate of flow of blood or other fluid in the body part. The device may be an ultrasound imaging device or may be a magnetic resonance imaging device.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: February 17, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: George Brock-Fisher, Patrick G. Rafter
  • Patent number: 6676602
    Abstract: Methods and systems for electronically scanning within a three dimensional volume while minimizing the number of system channels and associated cables connecting a two-dimensional array of elements to an ultrasound system are provided. An array of semiconductor or micro-machined switches electronically interconnect various elements of the two-dimensional array. Elements associated with a substantially same time delay are connected together as a macro element, reducing the number of independent elements to be connected to beamforming or system channels. To beam form in the desired direction, the macro elements are configured as a phased array or along substantially straight lines in at least two dimensions (i.e. along the face of the two-dimensional transducer). Such macro elements allow transmission and reception along beams that are at an angle other than normal to the two-dimensional transducer array.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: January 13, 2004
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Stephen R. Barnes, Todor Sheljaskow, Robert N. Phelps
  • Patent number: 6669639
    Abstract: An ultrasonic diagnostic imaging system cart is provided with an articulation mechanism for the image display. The articulation mechanism is pivotally mounted to the cart and to the display and includes an intermediate pivot elbow which allows the display to be moved laterally and forward and back from its nominal home position. One arm of the articulating mechanism is inclined to allow the display to clear other components of the cart when articulated and to prevent the development of pinch points. One of the joints of the articulating mechanism includes a locking device which selectively locks the joint to alter the articulation characteristic of the mechanism.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: December 30, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Brad A. Miller, John R. Murkowski
  • Patent number: 6663569
    Abstract: A cart-borne ultrasound system is described which includes a portable cart holding the electronic circuitry of the ultrasound system, a control panel for controlling the ultrasound system, and a display. The control panel is supported by an articulating mechanism which enables the control panel to be raised and lowered to accommodate operators of different height, and enables the control panel to move toward and away from the user to accommodate users in the sitting or standing positions. In a preferred embodiment the articulating mechanism comprises a parallelogram-shaped linkage which also maintains a constant angle of inclination of the control panel as it is raised and lowered.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: December 16, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Jay Wilkins, Robert Mesaros, Yas Matsui, Randall Dean Lord, John Russell Murkowski, William Hollman, Ulrich Rankers
  • Patent number: 6659956
    Abstract: The present invention relates to a medical instrument positioning device for controlled placement of a wide variety of medical instruments, such as an ultrasound transducer probe. The positioning device comprises a base member and a central shaft operatively associated with the base, a carriage member having a cavity configured and dimensioned to receive at least a portion of a medical instrument and slideably connected to the central shaft, a drive member coupled to the carriage member and engageable with the central shaft for movement with the central shaft and disengagement from the central shaft for sliding movement along the central shaft, and a quick release member operatively associated with the drive member. The quick release member has an inactive configuration in which the drive member engages the central shaft and an active configuration in which the drive member disengages the central shaft.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: December 9, 2003
    Assignee: Barzell-Whitmore Maroon Bells, Inc.
    Inventors: Winston E. Barzell, Willet F. Whitmore, III, Stephen E. Brauner, Roger F. Wilson, Salvatore A. Uccello
  • Patent number: 6659953
    Abstract: An ultrasound image is morphed for perfusion assessment. Various images within a sequence of images or movie clip are mapped to one frame of reference using local warping. Nonlinear local image transformations or other warping based on local estimates of motion are used to interpolate different images to the common reference. The elastic stretching and compression of local image data results in a sequence of images where the same spatial location in each image represents the substantially same spatial location of the imaged tissue. The organ, tissue or region of interest is stationary throughout the sequence of images.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: December 9, 2003
    Assignee: Acuson Corporation
    Inventors: Thilaka S. Sumanaweera, Robert W. Steins
  • Patent number: 6659955
    Abstract: The preferred embodiments described herein provide medical diagnostic ultrasound imaging system transmitter control in a modular transducer system. With these preferred embodiments, transmitters in a medical diagnostic ultrasound imaging system are enabled only when contacts in a scan head are electrically coupled with contacts in a receptacle assembly of a modular transducer system. This prevents high voltages from developing in the receptacle assembly when the scan head is removed from or is not fully engaged with the receptacle assembly. In one preferred embodiment, a detector is used to detect movement of a member comprising the contacts in the receptacle assembly. Other preferred embodiments are provided, and each of the preferred embodiments described herein can be used alone or in combination with one another.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: December 9, 2003
    Assignee: Acuson Corp.
    Inventor: Vaughn R. Marian, Jr.
  • Patent number: 6656124
    Abstract: Multilayer piezoelectric fabrication methods are used to produce nD (e.g., 1.5D and 2D) ultrasonic transducer arrays. One embodiment concerns a 1.5 linear transducer in which impedance compensation is provided between the elemental transducers forming the array by varying the number of layers in each row of transducers. In another embodiment, a 2D transducer array is provided wherein elemental transducers are produced by dicing a conventional multilayer actuator to form equal sized elements which are embedded in a polymer matrix.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: December 2, 2003
    Assignee: Vermon
    Inventors: Aimé Flesch, An Nguyen-Dinh
  • Patent number: 6645146
    Abstract: A method and apparatus for improving the penetration of the harmonic imaging while preserving the image uniformity by using signals from a similar frequency band to form a composite image. A near field image uses primarily tissue generated harmonic signal associated with a first transmitting event that has a center frequency of f1. Such tissue generated harmonic signal has a frequency band centered on 2f1. In the far field, fundamental echo signals from the second transmitting event that has a center frequency of f2 are primarily use. Since the center frequency f2 in the transmitting event is close to 2f1 and there is a significant overlap in frequency band between signals extracted from the first transmitting event and signals extracted from the second transmitting event, a composite image formed from these signals has similar speckle size across the whole image.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: November 11, 2003
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventors: Qian Zhang Adams, Satchi Panda, Richard Yung Chiao
  • Patent number: 6645147
    Abstract: A method and system for contrast agent imaging with a catheter transducer is provided. The catheter transducer may comprise an intra-vascular, intra-cardiac or other transducer for insertion into or through a small space. The catheter transducer is inserted within the heart or other portion of a patient. Contrast agents, such as micro-spheres, are injected into the patient. Using the catheter transducer, ultrasonic acoustic energy is transmitted, and reflected energy is received. The reflected energy is responsive to the contrast agents. An image processor generates an image of the tissue and contrast agents as a function of the reflected energy. The image provides an indication of perfusion. Alternatively, the ultrasound system calculates perfusion. By generating intra-vascular images or data, interference from other tissues is avoided. Therefore, the perfusion information obtained may have higher resolution. Images with better resolution better assist doctors in medical diagnosis.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: November 11, 2003
    Assignee: Acuson Corporation
    Inventors: John I. Jackson, Jay S. Plugge, Edward A. Gardner
  • Patent number: 6641539
    Abstract: An ultrasonic probe for microscopic operations in accordance with the present invention consists mainly of an ultrasonic probe body, an elongated tubular member, and a bent handle member. The ultrasonic probe body has a transducer assembly attached to the distal end of a soft elongated tube that is extended from a connector to be coupled to an ultrasonic observation apparatus, and has a coupler mounted on the tube thereof. The transducer assembly and tube are passed through the elongated tubular member. The handle member is attached to the proximal end of the tubular member and includes a coupling mechanism for use in coupling the coupler to the handle member so that the coupler can be uncoupled freely.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: November 4, 2003
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Kenji Hirooka, Ichiro Ohdachi, Shinichi Tsutaki