Patents by Inventor Barry R. Lutz

Barry R. Lutz 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: 20200395127
    Abstract: In some embodiments, a system for using various types of information to augment the determination of a post-test probability of the presence of a condition is provided. In some embodiments, the information may include detailed health status or sub-population prevalence information, gathered in real-time, in order to provide a more accurate pre-test probability value. In some embodiments, the information may include augmentation information that helps provide a more accurate likelihood ratio for a given analytical test. In some embodiments, the more accurate likelihood ratios that are calculated using the augmentation information can be used to select a most-useful test for a given situation. In some embodiments, the augmentation information may include a multivariate model that allows a post-test probability to be determined using an analytic test result and various factors related to the subject without explicitly determining a pre-test probability nor a likelihood ratio.
    Type: Application
    Filed: November 19, 2018
    Publication date: December 17, 2020
    Applicant: University of Washington
    Inventors: Barry R. Lutz, Rahil Jain, Blythe Adamson
  • Publication number: 20190126018
    Abstract: Drainage systems for excess body fluids and associated methods are disclosed herein. A body fluid drainage system in accordance with an embodiment of the present technology, for example, can include a catheter that has an exterior surface, a proximal portion, and a distal portion opposite the proximal portion. The body fluid drainage system can further include a valve device, a pressure sensor, and a controller operatively coupled to the valve device and the pressure sensor. The valve device can include an actuator positioned over the exterior surface of the catheter. The actuator is movable between an open position that allows body fluid flow through the catheter, a closed position that at least substantially obstructs the body fluid flow through the catheter, and intermediate positions that partially obstruct the body fluid flow through the catheter. The controller can change the position of the actuator in response to a predetermined condition of the pressure sensor.
    Type: Application
    Filed: December 27, 2018
    Publication date: May 2, 2019
    Inventors: Samuel R. Browd, Barry R. Lutz
  • Patent number: 10166375
    Abstract: Drainage systems for excess body fluids and associated methods are disclosed herein. A body fluid drainage system in accordance with an embodiment of the present technology, for example, can include a catheter that has an exterior surface, a proximal portion, and a distal portion opposite the proximal portion. The body fluid drainage system can further include a valve device, a pressure sensor, and a controller operatively coupled to the valve device and the pressure sensor. The valve device can include an actuator positioned over the exterior surface of the catheter. The actuator is movable between an open position that allows body fluid flow through the catheter, a closed position that at least substantially obstructs the body fluid flow through the catheter, and intermediate positions that partially obstruct the body fluid flow through the catheter. The controller can change the position of the actuator in response to a predetermined condition of the pressure sensor.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: January 1, 2019
    Assignee: University of Washington
    Inventors: Samuel R. Browd, Barry R. Lutz
  • Publication number: 20180326418
    Abstract: The present technology is directed to capillarity-based devices for performing chemical processes and associated system and methods. In one embodiment, for example, a device can include a base configured to receive one or more fluids, a porous wick carried by the base portion, and a flow-metering element along the porous wick to modify a rate or volume of fluid flow along the porous wick. The porous wick can comprise a first pathway, a second pathway, and an intersection at which the first pathway and the second pathway converge. Input ends of the first and second pathways can be wettably distinct. Upon wetting of the input ends, fluid is configured to travel by capillary action along each pathway. The device may also include volume-metering features configured to automatically and independently control or modify a volume of fluid flow along one or more pathways of the porous wick.
    Type: Application
    Filed: May 14, 2018
    Publication date: November 15, 2018
    Applicant: University of Washington
    Inventors: Paul Yager, Barry R. Lutz, Elain S. Fu, Peter C. Kauffman
  • Publication number: 20180028794
    Abstract: Drainage systems for excess body fluids and associated methods are disclosed herein. A body fluid drainage system in accordance with an embodiment of the present technology, for example, can include a catheter that has an exterior surface, a proximal portion, and a distal portion opposite the proximal portion. The body fluid drainage system can further include a valve device, a pressure sensor, and a controller operatively coupled to the valve device and the pressure sensor. The valve device can include an actuator positioned over the exterior surface of the catheter. The actuator is movable between an open position that allows body fluid flow through the catheter, a closed position that at least substantially obstructs the body fluid flow through the catheter, and intermediate positions that partially obstruct the body fluid flow through the catheter. The controller can change the position of the actuator in response to a predetermined condition of the pressure sensor.
    Type: Application
    Filed: October 6, 2017
    Publication date: February 1, 2018
    Inventors: Samuel R. Browd, Barry R. Lutz
  • Patent number: 9662478
    Abstract: Drainage systems for excess body fluids and associated methods are disclosed herein. A body fluid drainage system in accordance with an embodiment of the present technology, for example, can include a catheter that has an exterior surface, a proximal portion, and a distal portion opposite the proximal portion. The body fluid drainage system can further include a valve device, a pressure sensor, and a controller operatively coupled to the valve device and the pressure sensor. The valve device can include an actuator positioned over the exterior surface of the catheter. The actuator is movable between an open position that allows body fluid flow through the catheter, a closed position that at least substantially obstructs the body fluid flow through the catheter, and intermediate positions that partially obstruct the body fluid flow through the catheter. The controller can change the position of the actuator in response to a predetermined condition of the pressure sensor.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: May 30, 2017
    Assignee: University of Washington
    Inventors: Samuel R. Browd, Barry R. Lutz
  • Patent number: 9528987
    Abstract: The present technology describes various embodiments of devices for processing, analyzing, detecting, measuring, and separating fluids. The devices can be used to perform these processes on a microfluidic scale, and with control over fluid and reagent transport. In one embodiment, for example, a device for performing chemical processes can include a porous wick comprising a pathway defined by an input end, an output end, and a length between the input end and the output end. The pathway is configured to wick fluid from the input end to the output end by capillary action. The device can further include a reagent placed on the pathway. The reagent can be placed in a pattern configured to control a spatial or temporal distribution of the reagent along the pathway upon wetting of the pathway.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: December 27, 2016
    Assignee: University of Washington
    Inventors: Paul Yager, Barry R. Lutz, Elain S. Fu, Gina Fridley, Huy Quang Le, Peter C. Kauffman
  • Publication number: 20160101270
    Abstract: Drainage systems for excess body fluids and associated methods are disclosed herein. A body fluid drainage system in accordance with an embodiment of the present technology, for example, can include a catheter that has an exterior surface, a proximal portion, and a distal portion opposite the proximal portion. The body fluid drainage system can further include a valve device, a pressure sensor, and a controller operatively coupled to the valve device and the pressure sensor. The valve device can include an actuator positioned over the exterior surface of the catheter. The actuator is movable between an open position that allows body fluid flow through the catheter, a closed position that at least substantially obstructs the body fluid flow through the catheter, and intermediate positions that partially obstruct the body fluid flow through the catheter. The controller can change the position of the actuator in response to a predetermined condition of the pressure sensor.
    Type: Application
    Filed: December 17, 2015
    Publication date: April 14, 2016
    Inventors: Samuel R. Browd, Barry R. Lutz
  • Publication number: 20150196742
    Abstract: Drainage systems for excess body fluids and associated methods are disclosed herein. A body fluid drainage system in accordance with an embodiment of the present technology, for example, can include a catheter that has an exterior surface, a proximal portion, and a distal portion opposite the proximal portion. The body fluid drainage system can further include a valve device, a pressure sensor, and a controller operatively coupled to the valve device and the pressure sensor. The valve device can include an actuator positioned over the exterior surface of the catheter. The actuator is movable between an open position that allows body fluid flow through the catheter, a closed position that at least substantially obstructs the body fluid flow through the catheter, and intermediate positions that partially obstruct the body fluid flow through the catheter. The controller can change the position of the actuator in response to a predetermined condition of the pressure sensor.
    Type: Application
    Filed: March 24, 2015
    Publication date: July 16, 2015
    Inventors: Samuel R. Browd, Barry R. Lutz
  • Publication number: 20140227707
    Abstract: The present technology describes various embodiments of devices for processing, analyzing, detecting, measuring, and separating fluids. The devices can be used to perform these processes on a microfluidic scale, and with control over fluid and reagent transport. In one embodiment, for example, a device for performing chemical processes can include a porous wick comprising a pathway defined by an input end, an output end, and a length between the input end and the output end. The pathway is configured to wick fluid from the input end to the output end by capillary action. The device can further include a reagent placed on the pathway. The reagent can be placed in a pattern configured to control a spatial or temporal distribution of the reagent along the pathway upon wetting of the pathway.
    Type: Application
    Filed: June 25, 2012
    Publication date: August 14, 2014
    Applicant: University of Washington Through itsCenter for Com
    Inventors: Paul Yager, Barry R. Lutz, Elain S. Fu, Gina Fridley, Huy Quang Le, Peter C. Kauffman
  • Publication number: 20130197422
    Abstract: Drainage systems for excess body fluids and associated methods are disclosed herein. A body fluid drainage system in accordance with an embodiment of the present technology, for example, can include a catheter that has an exterior surface, a proximal portion, and a distal portion opposite the proximal portion. The body fluid drainage system can further include a valve device, a pressure sensor, and a controller operatively coupled to the valve device and the pressure sensor. The valve device can include an actuator positioned over the exterior surface of the catheter. The actuator is movable between an open position that allows body fluid flow through the catheter, a closed position that at least substantially obstructs the body fluid flow through the catheter, and intermediate positions that partially obstruct the body fluid flow through the catheter. The controller can change the position of the actuator in response to a predetermined condition of the pressure sensor.
    Type: Application
    Filed: March 21, 2011
    Publication date: August 1, 2013
    Applicant: UW CENTER FOR COMMERCIALIZATION
    Inventors: Samuel R. Browd, Barry R. Lutz
  • Publication number: 20120302938
    Abstract: Drainage systems for excess body fluids and associated methods are disclosed herein. A body fluid drainage system in accordance with an embodiment of the present technology, for example, can include a catheter having an exterior surface, a proximal portion, and a distal portion. The body fluid drainage system can further include a valve device, a pressure sensor, and a controller operatively coupled to the valve device and the pressure sensor. The valve device can include an actuator positioned over the exterior surface of the catheter. The actuator is movable between an open position that allows body fluid flow through the catheter, a closed position that at least substantially obstructs the body fluid flow through the catheter, and intermediate positions that partially obstruct the body fluid flow through the catheter. The controller can change the position of the actuator in response to a predetermined condition of the pressure sensor.
    Type: Application
    Filed: June 4, 2012
    Publication date: November 29, 2012
    Applicant: University of Washington
    Inventors: Samuel R. Browd, Barry R. Lutz
  • Publication number: 20120288961
    Abstract: The present technology is directed to capillarity-based devices for performing chemical processes and associated system and methods. In one embodiment, for example, a device can include a base configured to receive one or more fluids, a porous wick carried by the base portion, and a flow-metering element along the porous wick to modify a rate or volume of fluid flow along the porous wick. The porous wick can comprise a first pathway, a second pathway, and an intersection at which the first pathway and the second pathway converge. Input ends of the first and second pathways can be wettably distinct. Upon wetting of the input ends, fluid is configured to travel by capillary action along each pathway. The device may also include volume-metering features configured to automatically and independently control or modify a volume of fluid flow along one or more pathways of the porous wick.
    Type: Application
    Filed: December 21, 2010
    Publication date: November 15, 2012
    Applicant: University of Washington
    Inventors: Paul Yager, Barry R. Lutz, Elain S. Fu, Peter C. Kauffman
  • Patent number: 7803599
    Abstract: A microfluidic fluid flow system (100) is disclosed having a fluid chamber or channel (150) with inlet and outlet ports (104, 106), allowing the fluid channel to be filled with a fluid. One or more flow obstructions or perturbances, such as cylinders (152), are provided in the channel. An oscillatory boundary condition is applied, for example, with a piezoelectric driver (130), that is selected to induce a conservative, low-intensity steady streaming flow in the channel. The low-intensity streaming flow produces distinct eddies that can be utilized, for example, for fluid-dynamically trapping or retaining particles (90) such as cells (92) at well defined locations in the channel. The system may be used to trap and study individual cells or for concentrating or filtering particles in a fluid.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: September 28, 2010
    Assignee: University of Washington
    Inventors: Barry R. Lutz, Daniel T. Schwartz