Patents by Inventor Andrew H. Proctor

Andrew H. Proctor 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).

  • Patent number: 6500133
    Abstract: A medical instrument uses solid tapered cones mounted to a preferably concave, spherically curved, piezoelectric ultrasound transducer which focuses and concentrates the ultrasound energy to a narrow tip so very high levels of ultrasound can be delivered to the tissue adjacent to the tip. Ultrasound matching layers or variable curvature geometries are employed at the tip aid in transferring the energy from the tip to the tissue.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: December 31, 2002
    Assignee: University of Washington
    Inventors: Roy W. Martin, Mark D. Brentnall, Andrew H. Proctor
  • Publication number: 20010014780
    Abstract: A medical instrument uses solid tapered cones mounted to a preferably concave, spherically curved, piezoelectric ultrasound transducer which focuses and concentrates the ultrasound energy to a narrow tip so very high levels of ultrasound can be delivered to the tissue adjacent to the tip. Ultrasound matching layers or variable curvature geometries are employed at the tip aid in transferring the energy from the tip to the tissue.
    Type: Application
    Filed: December 1, 2000
    Publication date: August 16, 2001
    Inventors: Roy W. Martin, Mark D. Brentnall, Andrew H. Proctor
  • Patent number: 6217530
    Abstract: A medical instrument uses solid tapered cones mounted to a preferably concave, spherically curved, piezoelectric ultrasound transducer which focuses and concentrates the ultrasound energy to a narrow tip so very high levels of ultrasound can be delivered to the tissue adjacent to the tip. Ultrasound matching layers or variable curvature geometries are employed at the tip aid in transferring the energy from the tip to the tissue.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: April 17, 2001
    Assignee: University of Washington
    Inventors: Roy W. Martin, Mark D. Brentnall, Andrew H. Proctor
  • Patent number: 5247938
    Abstract: Devices are described which can be used to study the physiological function of the intestinal wall. These devices include an ultrasonic transducer that can be attached to a region of the intestinal wall. The transducer interrogates the wall and echoes are obtained from the different wall layers. The echoes are processed to produce an M-mode display of the wall. This allows monitoring how the wall changes with time. For example, as the wall contracts the muscle layer thickens and this action may be observed with the device. Other sensors and electrodes can be combined with this probe to correlate various physiological action. Finally, several such probes can be combined into a common introducible probe but which will monitor several regions along the intestinal wall. The major advantage of the disclosed device is that it provides a measurement of intestinal motility previously unattainable and it is introducible by endoscopy. This makes it a suitable tool for studying patient disease.
    Type: Grant
    Filed: January 11, 1990
    Date of Patent: September 28, 1993
    Assignee: University of Washington
    Inventors: Fred E. Silverstein, Roy W. Martin, Michael B. Kimmey, Michael D. Schuffler, Andrew H. Proctor, Geoffrey C. Jiranek
  • Patent number: 5229799
    Abstract: A collapsible slide carousel which allows for more efficient storage and transport thereof. The collapsible slide carousel includes an upper portion, a lower portion and a plurality of slide dividers pivotally secured to the upper and lower portions such that the slides can be positioned in an erect position or a collapsed position. In the erect position the slides are disposed substantially vertically as in a conventional carousel such that the slides can be viewed utilizing a conventional carousel projector. Alternatively, in the collapsed position the slides are disposed in an angular position overlapping one another in a domino-like manner allowing for more efficient storage and transportation of the carousel. The upper portion of the carousel is rotatably disposed with respect to the lower portion such that the carousel can be adjusted from the erect position to the collapsed position, and vice versa, by rotating the upper portion with respect to the lower portion.
    Type: Grant
    Filed: March 19, 1992
    Date of Patent: July 20, 1993
    Assignee: Silversquare
    Inventors: Fred E. Silverstein, Andrew H. Proctor
  • Patent number: 5178150
    Abstract: A miniature ultrasound imaging probe that may be delivered through the biopsy channel of an endoscope. The probe includes a probe tip mounted at the distal end of a flexible catheter. The probe tip includes a transducer body mounted on the distal end of a distal actuating rod with the transducer body carrying an ultrasound transducer. The distal actuating rod is mounted on the distal end of a plurality of concentric, springs wound in opposite directions extending concentrically through the catheter and terminating in a proximal actuating rod. A flexible bag filled with an acoustic coupling fluid is mounted at the distal end of the catheter. The bag surrounds the transducer body to isolate it from the external environment and retain the acoustic coupling fluid. When the probe is to be inserted through a narrow passage, the proximal actuating rod is advanced into the catheter to extend the transducer body against the flexible bag. As a result, the bag elongates and its width is reduced.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: January 12, 1993
    Inventors: Fred E. Silverstein, Andrew H. Proctor