Patents by Inventor Worth B. Walters

Worth B. Walters has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200222666
    Abstract: Flexible elongate device systems and methods include a flexible elongate device having a flexible body and an axial support structure. The axial support structure includes at least one groove extending along a length of the axial support structure. The flexible elongate device further includes a plurality of control elements for actuating the flexible elongate device. Each of the plurality of control elements extends through one of the at least one groove of the axial support structure. In some embodiments, the at least one groove includes a plurality of grooves spaced circumferentially around the axial support structure. In some embodiments, the flexible body includes lumens that extend through the at least one of the grooves. The control elements are disposed in the lumens. In some embodiments, the flexible body includes a main lumen that extends centrally through the flexible body. The main lumen provides a channel for a medical tool.
    Type: Application
    Filed: July 20, 2018
    Publication date: July 16, 2020
    Inventors: Jason K. Chan, Joseph R. Callol, Lucas S. Gordon, Anoop B. Kowshik, Randall L. Schlesinger, Hans F. Valencia, Worth B. Walters
  • Publication number: 20190254649
    Abstract: Systems and methods for integrated real-time visualization while performing a minimally invasive procedure within anatomic passageways include a flexible catheter having one or more first lumens and a first positioning system, an imaging probe having one or more imaging elements, and a sealing device. In some embodiments, the sealing device includes a plurality of second lumens and the flexible catheter and the imaging probe are each optionally deployed through a respective one of the second lumens. In some embodiments, the one or more imaging elements include one or more ultrasound transducers. In some embodiments, the sealing device seals the anatomic passageways at a sealing location using one or more balloons, and the anatomic passageways distal to the sealing location are collapsed. In some embodiments, the first positioning system includes one or more position sensors. In some embodiments, the procedure is performed after the passageways are collapsed.
    Type: Application
    Filed: June 13, 2017
    Publication date: August 22, 2019
    Inventors: Worth B. Walters, Randall L. Schlesinger, Oliver J. Wagner
  • Patent number: 8014231
    Abstract: A capacitive membrane is used as a digital sensor. Membranes act as binary devices, such as being in a collapsed or non-collapsed state. By providing drum heads (membranes and associated gaps) with different response characteristics, the drum heads of an element digitally indicate the amplitude of the acoustic force by which of the drum heads are triggered or change states. The digital transducer may be used for different types of sensors, such as a CMUT, an air pressure, a temperature, a humidity, a chemical or biological stimulus or other sensor.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: September 6, 2011
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Nelson H. Oliver, Worth B. Walters
  • Patent number: 7589456
    Abstract: A capacitive membrane is used as a digital sensor. Membranes act as binary devices, such as being in a collapsed or non-collapsed state. By providing drum heads (membranes and associated gaps) with different response characteristics, the drum heads of an element digitally indicate the amplitude of the acoustic force by which of the drum heads are triggered or change states. The digital transducer may be used for different types of sensors, such as a CMUT, an air pressure, a temperature, a humidity, a chemical or biological stimulus or other sensor.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: September 15, 2009
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Nelson H. Oliver, Worth B. Walters
  • Patent number: 7567016
    Abstract: In k31 mode, a vibration is along an axis or orthogonal to the poling or electric field orientation. The direction of vibration is toward a face of an ultrasound transducer array. For each element of the array, electrodes are formed perpendicular to the face of the array, such as along the sides of the elements. Piezoelectric material is poled along a dimension parallel with the face of the transducer and perpendicular to the direction of acoustic energy propagation. Using elements designed for k31 resonant mode operation may provide for a better electrical impedance match, such as where small elements sizes are provided for a multi-dimensional transducer arrays. For additional impedance matching, the elements may be made from multiple layers of piezoelectric ceramic. Since the elements operate from a k31 mode, the layers are stacked along the poling direction or perpendicular to a face of the transducer array for transmitting or receiving acoustical energy.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: July 28, 2009
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Xuan-Ming Lu, Timothy L. Proulx, Lewis J. Thomas, III, Worth B. Walters
  • Publication number: 20090020001
    Abstract: A capacitive membrane is used as a digital sensor. Membranes act as binary devices, such as being in a collapsed or non-collapsed state. By providing drum heads (membranes and associated gaps) with different response characteristics, the drum heads of an element digitally indicate the amplitude of the acoustic force by which of the drum heads are triggered or change states. The digital transducer may be used for different types of sensors, such as a CMUT, an air pressure, a temperature, a humidity, a chemical or biological stimulus or other sensor.
    Type: Application
    Filed: September 25, 2008
    Publication date: January 22, 2009
    Inventors: NELSON H. OLIVER, WORTH B. WALTERS
  • Patent number: 7368852
    Abstract: Matching layers are provided, including: electrically conductive acoustic matching layers, methods for conducting electric current through matching layers, methods for manufacturing multi-dimensional arrays using conductive matching layers, and multi-dimensional arrays with electrically conducting matching layers. Matching layers with conductors aligned for providing electrical conduction through the thickness or range dimension of the matching layer are provided. For example, vias, aligned magnetic particles, or conductive films at least partially or entirely within the matching layer of each element allow electrical conduction from the transducer material to a ground foil or flex circuit. By using multiple electrical conductive matching layers, a gradation in acoustic impedance for better matching is provided while allowing dicing of the entire stack, including the matching layers and the electroceramic material, in one step.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: May 6, 2008
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Gregg W. Frey, Todor Sheljaskow, Walt T. Wilser, Worth B. Walters, Nelson H. Oliver
  • Patent number: 7344501
    Abstract: Multiple layer elements for a transducer array are provided. Each element comprises two or more layers of transducer material. Various of the elements include one or more of: (1) multiple-layer, multiple-dimensional arrays where the layers are polymericly bonded together and electrically connected through asperity contact, (2) multiple layer array of elements where air or gas separates at least two elements, (3) an even number of layers where each layer is electrically connected through asperity contact, (4) multiple-layers where each layer comprises transducer material and electrodes in a substantially same configuration, and (5) electrically isolating electrodes on layers by kerfing or cutting after bonding the layers together.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: March 18, 2008
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: John P. Mohr, III, Worth B. Walters, Sevig Ayter
  • Patent number: 7314447
    Abstract: An ultrasound transducer assembly is disclosed having a housing, a transducer array mounted in the housing and an electronics assembly mounted in the housing, the electronics assembly including one or more sub-assemblies having heat generating components disposed thereon. The electronics sub-assemblies further include thermal conducting features which conduct heat generated by the heat generating components out of the electronics assembly where it can be further removed by other thermal management techniques. These other thermal management techniques may include techniques utilized to cool the transducer array.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: January 1, 2008
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: William J. Park, Vaughn Marian, David Petersen, Todor Sheljaskow, Mirsaid S. Boloforosh, Worth B. Walters, Sevig Ayter
  • Patent number: 6971148
    Abstract: Multiple layer elements for a transducer array are provided. Each element comprises two or more layers of transducer material. Various of the elements are manufactured by one or more of: (1) stacking to form a multiple-layer, multiple-dimensional array where the layers are polymericly bonded and electrically connected through asperity contact, (2) using air or gas to separate at least two elements, (3) stacking an even number of layers where each layer is electrically connected through asperity contact, (4) using multiple-layers where each layer comprises transducer material and electrodes in a substantially same configuration, and (5) electrically isolating electrodes on layers by kerfing or cutting after bonding the layers together.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: December 6, 2005
    Assignee: Acuson Corporation
    Inventors: John P. Mohr, III, Worth B. Walters, Sevig Ayter
  • Patent number: 6761688
    Abstract: Multiple layer elements for a transducer array are provided. Each element comprises two or more layers of transducer material. Various of the elements include one or more of: (1) multiple-layer, multiple-dimensional arrays where the layers are polymericly bonded and electrically connected through asperity contact, (2) multiple layer array of elements where air or gas separates at least two elements, (3) an even number of layers where each layer is electrically connected through asperity contact, (4) multiple-layers where each layer comprises transducer material and electrodes in a substantially same configuration, and (5) electrically isolating electrodes on layers by kerfing or cutting after bonding the layers together.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: July 13, 2004
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: John P. Mohr, III, Worth B. Walters, Sevig Ayter
  • Publication number: 20040002655
    Abstract: An ultrasound transducer assembly having a housing, a transducer array mounted in the housing, and active cooling mechanism positioned adjacent to the transducer array for actively removing heat generated by the array by transport of heat energy from the affected site. The active cooling mechanism comprises a thermo-electric cooler which utilizes active thermal transport to remove heat from the transducer. The thermoelectric cooler may be used alone or in combination with a phase change material or other system to subsequently remove the heat from the thermo-electric cooler. The thermo-electric cooler is coupled with the flex-circuit layers of the transducer to efficiently remove heat generated within the component layers of the transducer.
    Type: Application
    Filed: June 27, 2002
    Publication date: January 1, 2004
    Applicant: Acuson, a Siemens Company
    Inventors: Mirsaid S. Bolorforosh, Worth B. Walters, Sevig Ayter
  • Patent number: 6664717
    Abstract: Multiple layer elements for a transducer array are provided. Each element comprises two or more layers of transducer material. Various of the elements include one or more of: (1) multiple-layer, multiple-dimensional arrays where the layers are electrically connected through asperity contact, (2) multiple layer array of elements where air or gas separates at least two elements, (3) an even number of layers polymerically bonded together where each layer is electrically connected through asperity contact, (4) multiple-layers where each layer comprises transducer material and electrodes in a substantially same configuration, and (5) electrically isolating electrodes on layers by kerfing or cutting after bonding the layers together.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: December 16, 2003
    Assignee: Acuson Corporation
    Inventors: John P. Mohr, III, Worth B. Walters, Sevig Ayter
  • Publication number: 20030107303
    Abstract: Multiple layer elements for a transducer array are provided. Each element comprises two or more layers of transducer material. Various of the elements include one or more of: (1) multiple-layer, multiple-dimensional arrays where the layers are electrically connected through asperity contact, (2) multiple layer array of elements where air or gas separates at least two elements, (3) an even number of layers where each layer is electrically connected through asperity contact, (4) multiple-layers where each layer comprises transducer material and electrodes in a substantially same configuration, and (5) electrically isolating electrodes on layers by kerfing or cutting after bonding the layers together.
    Type: Application
    Filed: June 28, 2002
    Publication date: June 12, 2003
    Applicant: Acuson Corporation
    Inventors: John P. Mohr, Worth B. Walters, Sevig Ayter
  • Publication number: 20020117941
    Abstract: Multiple layer elements for a transducer array are provided. Each element comprises two or more layers of transducer material. Various of the elements include one or more of: (1) multiple-layer, multiple-dimensional arrays where the layers are electrically connected through asperity contact, (2) multiple layer array of elements where air or gas separates at least two elements, (3) an even number of layers where each layer is electrically connected through asperity contact, (4) multiple-layers where each layer comprises transducer material and electrodes in a substantially same configuration, and (5) electrically isolating electrodes on layers by kerfing or cutting after bonding the layers together.
    Type: Application
    Filed: February 28, 2001
    Publication date: August 29, 2002
    Applicant: Acuson Corporation
    Inventors: John P. Mohr, Worth B. Walters, Sevig Ayter
  • Patent number: 6437487
    Abstract: Multiple layer elements for a transducer array are provided. Each element comprises two or more layers of transducer material. Various of the elements include one or more of: (1) multiple-layer, multiple-dimensional arrays where the layers are polymericly bonded and electrically connected through asperity contact, (2) multiple layer array of elements where air or gas separates at least two elements, (3) an even number of layers where each layer is electrically connected through asperity contact, (4) multiple-layers where each layer comprises transducer material and electrodes in a substantially same configuration, and (5) electrically isolating electrodes on layers by kerfing or cutting after bonding the layers together.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: August 20, 2002
    Assignee: Acuson Corporation
    Inventors: John P. Mohr, III, Worth B. Walters, Sevig Ayter
  • Patent number: 6429574
    Abstract: Multiple layer elements for a transducer array are provided. Each element comprises two or more layers of transducer material. Various of the elements include one or more of: (1) multiple-layer, multiple-dimensional arrays where the layers are poymericly electrically connected through asperity contact, (2) multiple layer array of elements where air or gas separates at least two elements, (3) an even number of layers where each layer is electrically connected through asperity contact, (4) multiple-layers where each layer comprises transducer material and electrodes in a substantially same configuration, and (5) electrically isolating electrodes on layers by kerfing or cutting after bonding the layers together.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: August 6, 2002
    Assignee: Acuson Corporation
    Inventors: John P. Mohr, III, Worth B. Walters, Sevig Ayter
  • Patent number: 6093150
    Abstract: An ultrasonic imaging device for imaging the middle and inner ear is here described. It includes a thin, flattened shaft, a deformable support structure, a mounting surface, and an ultrasonic imaging array. Imaging is effected by the introduction of an acoustically conductive fluid into the middle ear space. Access to the tympanum through the external auditory canal and adjacent to the probe shaft for the purpose of injecting fluid into the middle ear space both before and during the exam is permitted by the flattened probe shaft. The deformable probe shaft may be bent or angulated to best fit a particular patients ear thus permitting optimal access for imaging through the tympanum and around the manubrium of the malleus attached down the midline of the tympanum. High resolution imaging of all structures within the middle and inner ear is achievable.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: July 25, 2000
    Assignee: Acuson Corporation
    Inventors: Paul E. Chandler, John W. Sliwa, Joan C. Main, Worth B. Walters
  • Patent number: 5410208
    Abstract: A transducer has tapered piezoelectric layer sides in order to reduce the sidelobe levels. In addition, matching layers disposed on the piezoelectric layer may similarly be tapered to further increase performance. Alternative to tapering the piezoelectric layer, the top electrode and/or the matching layers may be reduced in size relative to the piezoelectric layer such that they generate a wave which destructively interferes with the undesirable lateral wave. There are also described methods for manufacturing a reduced sidelobe transducer.
    Type: Grant
    Filed: April 12, 1993
    Date of Patent: April 25, 1995
    Assignee: Acuson Corporation
    Inventors: Worth B. Walters, Sevig Ayter, John A. Hossack, Kathy J. Jackson, Jing Liu