Patents by Inventor John G. Webster

John G. Webster 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: 10709879
    Abstract: The present invention provides a cerebrospinal fluid shunt system that monitors the intracranial pressures over a portion of a monitoring cycle to calculate short intervals of drainage for every monitoring cycle necessary to produce the desired pressure correction. The system operates to significantly reduce the time during which draining occurs allowing tissue surrounding the catheter to rebound from the catheter holes returning to its normal position for a sufficient amount of time to recover its normal shape.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: July 14, 2020
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Bermans J. Iskandar, Joshua Medow, Christopher Luzzio, John G. Webster, Mehdi Shokoueinejad Maragheh, Fa Wang, Xuan Zhang
  • Patent number: 10130415
    Abstract: An electrode array supports multiple electrodes and energizes them so that adjacent electrodes do not have the same polarity. In one embodiment, the electrodes are held about a circumference outside and surrounding a tumor and opposed electrodes are energized in a round robin fashion to promote current flow through the center of the tumor from a variety of angles.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: November 20, 2018
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: John G. Webster, Dieter Haemmerich, James Arthur Will, David Mahvi, Ann O'Rourke, David James Schutt
  • Publication number: 20180280670
    Abstract: The present invention provides a cerebrospinal fluid shunt system that monitors the intracranial pressures over a portion of a monitoring cycle to calculate short intervals of drainage for every monitoring cycle necessary to produce the desired pressure correction. The system operates to significantly reduce the time during which draining occurs allowing tissue surrounding the catheter to rebound from the catheter holes returning to its normal position for a sufficient amount of time to recover its normal shape.
    Type: Application
    Filed: March 29, 2017
    Publication date: October 4, 2018
    Inventors: Bermans J. Iskandar, Joshua Medow, Christopher Luzzio, John G. Webster, Mehdi Shokoueinejad Maragheh, Fa Wang, Xuan Zhang
  • Patent number: 9424734
    Abstract: The device to monitor distance between people measures a pre-defined distance between a first person and other persons, and alerts the user when the pre-defined distance has been breached or violated for more than a pre-determined time. Intended to protect a first human from the deleterious effects of radiation (nuclear) associated with a second human, but useful in other circumstances, the device is designed to detect the presence of a first person within a protective radius of one to two meters of a second person by pairing the combination of one heat sensor with one distance sensor. In the event the first person is within that radius for the predetermined time, the device will alert the user of that circumstance. Alert feedback mechanisms can include an acoustic audible signal, a visible signal, a vibratory signal, or phone notification.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: August 23, 2016
    Assignee: KING ABDULAZIZ UNIVERSITY
    Inventors: Sarah Hagi, Nazeeh Alothmany, John G. Webster, Adam Strebel, Jack Goss, Emily Carroll, Michael Ouirk, Tommy Zipp, David Mott, Elliot Saldivar, Justin Faanes, Jesse Wang
  • Publication number: 20160183803
    Abstract: The shape of the urine stream can be used to measure both the flow rate and orifice geometry. The measurement of the shape of the urine stream can be a useful diagnostic tool for medical practitioners since it provides a noninvasive method of measuring urine flow rate and urethral dilation. A novel diagnostic visual voiding device (VVD) measures Symptoms of Lower Urinary Tract Dysfunction (LUTD) such as urinary incontinence. The VVD consists of a lightweight foldable booth with LED lights, microphone, video cameras on left side, top, face, and container that display stream height, width, angle, distance, face grimacing, container height and flow versus time. The VVD will improve the initial diagnosis of Lower Urinary Tract Dysfunction (LUTD) and also improve LUTD by providing subsequent diagnosis after treatment. It enables the patient to video and audio record urinary voiding in privacy.
    Type: Application
    Filed: March 14, 2014
    Publication date: June 30, 2016
    Applicant: KING ABDULAZIZ UNIVERSITY
    Inventors: Hisham A. Mosli, Nazeeh Alothmany, John G. Webster, Mehdi Shokoueinejad Maragheh, Rayan Alkashgari
  • Patent number: 8777938
    Abstract: A method of resection of an organ employs a handheld microwave waveguide that receives a microwave signal and applies a substantially planar microwave beam into the organ for coagulation of a strip of tissue in an organ providing a barrier against blood loss during resection operations.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: July 15, 2014
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: David M. Mahvi, Mark C. Converse, Punit Prakash, John G. Webster
  • Patent number: 8486065
    Abstract: Efficient ablation with multiple electrodes is obtained by rapidly switching electric power to the electrodes. In this way, shielding effects caused by the field around each electrode which would otherwise create cool spots, are avoided. Complex inter-electrode current flows are also avoided.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: July 16, 2013
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Fred T. Lee, Dieter Haemmerich, John G. Webster, Andrew S. Wright, Chris D. Johnson, David M. Mahvi
  • Publication number: 20100312234
    Abstract: A handheld microwave waveguide provides a planar microwave beam for rapid coagulation of a strip of tissue in an organ providing a barrier against blood loss during resection operations.
    Type: Application
    Filed: June 4, 2009
    Publication date: December 9, 2010
    Inventors: David M. Mahvi, Mark C. Converse, Punit Prakash, John G. Webster
  • Publication number: 20090036882
    Abstract: An electrode array supports multiple electrodes and energizes them so that adjacent electrodes do not have the same polarity. In one embodiment, the electrodes are held about a circumference outside and surrounding a tumor and opposed electrodes are energized in a round robin fashion to promote current flow through the center of the tumor from a variety of angles.
    Type: Application
    Filed: February 25, 2008
    Publication date: February 5, 2009
    Inventors: John G. Webster, Dieter Haemmerich, James Arthur Will, David Mahvi, Ann O'Rourke, David James Schutt
  • Patent number: 7431703
    Abstract: An apparatus and method for detecting, monitoring, measuring and recording the motion of a patient's spine is disclosed. The apparatus includes a vertical member attached to a belt that fits around the patient's waist. A first sensor for detecting and monitoring flexion and extension of the patient's spine in the midsagittal plane is mounted to the lower end of the vertical member. A second sensor for detecting and monitoring lateral bending and movement of the patient's spine in the frontal plane is mounted to the upper end of the vertical member.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: October 7, 2008
    Inventors: Frank J. Salvi, John G. Webster, Gabriel J. Donatell, David W. Meister, Jeremy R. O'Brien, John S. Thurlow
  • Patent number: 7367974
    Abstract: An electrode array allows for rapid ablation of a strip of tissue in an organ providing a barrier to blood loss during resection operations.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: May 6, 2008
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Dieter Haemmerich, David M. Mahvi, John G. Webster, David J. Schutt
  • Publication number: 20040230187
    Abstract: In radiofrequency ablation, larger lesion volumes are obtained for a given energy delivery by energizing at least two electrodes on either side of the tumor so that current is focused between them rather than dispersed radially to a large area ground plate. Modified standard umbrella probes may be used or a specialized dual electrode array may be fabricated for simplified use. Differential impedance between tumor and non-tumor tissues at certain frequencies is exploited to further improve lesion shape and size.
    Type: Application
    Filed: March 9, 2004
    Publication date: November 18, 2004
    Inventors: Fred T. Lee, Dieter Haemmerich, John G. Webster, Andrew S. Wright, Chris D. Johnson, David M. Mahvi
  • Publication number: 20030109802
    Abstract: A method and apparatus for reducing bleeding in biopsy procedures provides a cauterizing electrical current through an introducer needle as the needle is withdrawn. A majority of the length of the introducer needle may be insulated to concentrate the cauterization at its tip, and a field smoothing cauterizing stylet may be used in conjunction with the tube to provide more even cauterization and/or instrumentation to monitor cauterization. Cauterization may be controlled by the speed of withdrawal of the introducer needle as guided manually or automatically by the instrumentation.
    Type: Application
    Filed: December 12, 2001
    Publication date: June 12, 2003
    Inventors: Paul F. Laeseke, Kelly Rose Stevens, Thomas C. Winter, Fred T. Lee, Frank J. Fronczak, John G. Webster, Connie L. Davis
  • Publication number: 20020156472
    Abstract: Efficient ablation with multiple electrodes is obtained by rapidly switching electric power to the electrodes. In this way, shielding effects caused by the field around each electrode which would otherwise create cool spots, are avoided. Complex inter-electrode current flows are also avoided.
    Type: Application
    Filed: June 10, 2002
    Publication date: October 24, 2002
    Inventors: Fred T. Lee, Dieter Haemmerich, John G. Webster, Andrew S. Wright, Chris D. Johnson, David M. Mahvi
  • Publication number: 20020022864
    Abstract: In radio frequency ablation, larger lesion volumes are obtained for a given energy delivery by energizing at least two electrodes on either side of the tumor so that current is focused between them rather than dispersed radially to a large area ground plate. Modified standard umbrella probes may be used or a specialized dual electrode array may be fabricated for simplified use. Differential impedance between tumor and non-tumor tissues at certain frequencies is exploited to further improve lesion shape and size.
    Type: Application
    Filed: June 4, 2001
    Publication date: February 21, 2002
    Inventors: David M. Mahvi, John G. Webster, Fred T. Lee, Stephen T. Staelin, Dieter Haemmerich, Supan Tungjitkusolmun