Patents by Inventor Douglas G. Evans

Douglas G. Evans 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: 20170080223
    Abstract: A catheter may include electrodes for transvascular nerve stimulation. The electrodes may be positioned within lumens of the catheter and aligned with apertures in the outer wall of the catheter. The electrodes may produce focused electrical fields for stimulation of one or more nerves. In one embodiment, the catheter may include a set of proximal electrodes and a set of distal electrodes, and the proximal electrodes may stimulate a patient's left phrenic nerve and the distal electrodes may stimulate a patient's right phrenic nerve.
    Type: Application
    Filed: December 6, 2016
    Publication date: March 23, 2017
    Inventors: Viral THAKKAR, Joaquin Andres HOFFER, Bao Dung TRAN, Douglas G. EVANS, John NASH
  • Patent number: 9545511
    Abstract: A catheter may include electrodes for transvascular nerve stimulation. The electrodes may be positioned within lumens of the catheter and aligned with apertures in the outer wall of the catheter. The electrodes may produce focused electrical fields for stimulation of one or more nerves. In one embodiment, the catheter may include a set of proximal electrodes and a set of distal electrodes, and the proximal electrodes may stimulate a patient's left phrenic nerve and the distal electrodes may stimulate a patient's right phrenic nerve.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: January 17, 2017
    Assignee: Simon Fraser University
    Inventors: Viral Thakkar, Joaquin Andres Hoffer, Bao Dung Tran, Douglas G. Evans, John Nash
  • Publication number: 20170007825
    Abstract: A catheter may include electrodes for transvascular nerve stimulation. The electrodes may be positioned within lumens of the catheter and aligned with apertures in the outer wall of the catheter. The electrodes may produce focused electrical fields for stimulation of one or more nerves. In one embodiment, the catheter may include a set of proximal electrodes and a set of distal electrodes, and the proximal electrodes may stimulate a patient's left phrenic nerve and the distal electrodes may stimulate a patient's right phrenic nerve.
    Type: Application
    Filed: September 22, 2016
    Publication date: January 12, 2017
    Inventors: Viral THAKKAR, Joaquin Andres HOFFER, Bao Dung TRAN, Douglas G. EVANS, John Nash
  • Patent number: 9532862
    Abstract: A system for supporting the urethra using an introducer needle, the ends of which are flattened and which have openings therethrough, a handle having a latch mechanism which engages the opening in the flattened portion of the first end of the introducer needle, an implant, and a connector joining the end of the implant to the flattened portion of one of the ends of the introducer needle. These components are used to draw the implant into position, either through vaginal or abdominal incisions, to form a U-shaped loop beneath the urethra. The ends of the implant are adjusted to provide proper support for the urethra.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: January 3, 2017
    Assignee: Coloplast A/S
    Inventors: Douglas G. Evans, Ken Butcher, Michele Gandy Davis
  • Patent number: 9532861
    Abstract: A system for supporting the urethra using an introducer needle, the ends of which are flattened and which have openings therethrough, a handle having a latch mechanism which engages the opening in the flattened portion of the first end of the introducer needle, an implant, and a connector joining the end of the implant to the flattened portion of one of the ends of the introducer needle. These components are used to draw the implant into position, either through vaginal or abdominal incisions, to form a U-shaped loop beneath the urethra. The ends of the implant are adjusted to provide proper support for the urethra. The implant can have slits that open under applied tensile force.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: January 3, 2017
    Assignee: Coloplast A/S
    Inventors: Douglas G. Evans, Ken Butcher, Michele Gandy Davis
  • Patent number: 9474897
    Abstract: A catheter may include electrodes for transvascular nerve stimulation. The electrodes may be positioned within lumens of the catheter and aligned with apertures in the outer wall of the catheter. The electrodes may produce focused electrical fields for stimulation of one or more nerves. In one embodiment, the catheter may include a set of proximal electrodes and a set of distal electrodes, and the proximal electrodes may stimulate a patient's left phrenic nerve and the distal electrodes may stimulate a patient's right phrenic nerve.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: October 25, 2016
    Assignee: Simon Fraser University
    Inventors: Viral Thakkar, Joaquin Andres Hoffer, Bao Dung Tran, Douglas G. Evans, John Nash
  • Publication number: 20160101280
    Abstract: A catheter may include electrodes for transvascular nerve stimulation. The electrodes may be positioned within lumens of the catheter and aligned with apertures in the outer wall of the catheter. The electrodes may produce focused electrical fields for stimulation of one or more nerves. In one embodiment, the catheter may include a set of proximal electrodes and a set of distal electrodes, and the proximal electrodes may stimulate a patient's left phrenic nerve and the distal electrodes may stimulate a patient's right phrenic nerve.
    Type: Application
    Filed: December 15, 2015
    Publication date: April 14, 2016
    Inventors: Viral THAKKAR, Joaquin Andres HOFFER, Bao Dung TRAN, Douglas G. EVANS, John Nash
  • Patent number: 9283074
    Abstract: An implant for deployment in select locations or select tissue for regeneration of tissue is disclosed. The implant includes collagen and or other bio-resorbable materials, where the implant may also be used for therapy delivery. Additionally, the implant may include, or have blended in, an additive, such as an osteoinductive factor, for example biocompatible ceramics and glass.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: March 15, 2016
    Assignee: Kensey Nash BVF Technology, LLC
    Inventors: Douglas G. Evans, Scott M. Goldman, Russell T. Kronengold
  • Patent number: 9242088
    Abstract: A catheter may include electrodes for transvascular nerve stimulation. The electrodes may be positioned within lumens of the catheter and aligned with apertures in the outer wall of the catheter. The electrodes may produce focused electrical fields for stimulation of one or more nerves. In one embodiment, the catheter may include a set of proximal electrodes and a set of distal electrodes, and the proximal electrodes may stimulate a patient's left phrenic nerve and the distal electrodes may stimulate a patient's right phrenic nerve.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: January 26, 2016
    Assignee: Simon Fraser University
    Inventors: Viral Thakkar, Joaquin Andres Hoffer, Bao Dung Tran, Douglas G. Evans, John Nash, Steven Campbell Reynolds
  • Publication number: 20150250573
    Abstract: A surgical system for treating urinary incontinence includes an introducer needle and a handle. The introducer needle has a first section that is straight and is provided with a first flat, a second flat opposite the first flat, and a latch receptacle formed into the first section. The introducer needle has a second section extending from the first section, with the second section being curved. The handle includes a housing with a needle opening configured to receive the first section of the introducer needle and a latching mechanism that includes a latch member. The latching mechanism is configured to engage the latch receptacle of the introducer needle.
    Type: Application
    Filed: May 22, 2015
    Publication date: September 10, 2015
    Inventors: Douglas G. Evans, Ken Butcher
  • Publication number: 20150148877
    Abstract: A catheter may include electrodes for transvascular nerve stimulation. The electrodes may be positioned within lumens of the catheter and aligned with apertures in the outer wall of the catheter. The electrodes may produce focused electrical fields for stimulation of one or more nerves. In one embodiment, the catheter may include a set of proximal electrodes and a set of distal electrodes, and the proximal electrodes may stimulate a patient's left phrenic nerve and the distal electrodes may stimulate a patient's right phrenic nerve.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 28, 2015
    Inventors: Viral THAKKAR, Joaquin Andres HOFFER, Bao Dung TRAN, Douglas G. EVANS, John NASH, Steven Campbell REYNOLDS
  • Patent number: 9005250
    Abstract: A method of supporting a defect in the tissue of a living being includes the steps of: a) providing a delivery instrument that includes an elongated instrument, at least one barrier element, and a plurality of connecting members; b) inserting the elongated instrument into the tissue at or near the defect; c) deploying the barrier element from the delivery instrument into tissue at or near the defect, the barrier element having at least one connecting member attached thereto; d) extending at least one passage means from the delivery instrument; e) engaging at least a portion of the at least one connecting member with the at least one passage means, whereby the at least one passage means causes the at least one connecting member to pass through the tissue, and f) withdrawing the elongated instrument from the tissue, thereby deploying and securing the barrier element to support the tissue.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: April 14, 2015
    Assignee: Kensey Nash Corporation
    Inventor: Douglas G. Evans
  • Patent number: 9005222
    Abstract: A system for supporting the urethra using an introducer needle, the ends of which are flattened and which have openings therethrough, a handle having a latch mechanism which engages the opening in the flattened portion of the first end of the introducer needle, an implant, and a connector joining the end of the implant to the flattened portion of one of the ends of the introducer needle. These components are used to draw the implant into position, either through vaginal or abdominal incisions, to form a U-shaped loop beneath the urethra. The ends of the implant are adjusted to provide proper support for the urethra. The implant can have slits that open under applied tensile force.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: April 14, 2015
    Assignee: Coloplast A/S
    Inventors: Douglas G. Evans, Ken Butcher, Michele Gandy Davis
  • Publication number: 20150094748
    Abstract: A device suitable for removing material from a living being is provided, featuring at least an aspiration pump, powered by a motor. The aspiration pump and any optional infusate pump preferably feature a helical pumping mechanism, and operate at a high rate of rotation, thereby ensuring adequate pumping performance and flexibility. The helical pumping mechanism may be a helical coiled wire about a central core tube. The helical coil wire, whether together with, or independent of, the core tube, may be rotated to cause a pumping action. Additionally, a narrow crossing profile is maintained, ensuring that the device may reach more tortuous regions of the vasculature. In one embodiment, the system comprises a wire-guided mono-rail catheter with a working head mounted on a flexible portion of the catheter that can laterally displace away from the guide wire to facilitate thrombus removal.
    Type: Application
    Filed: December 5, 2014
    Publication date: April 2, 2015
    Inventors: John E. NASH, Greg WALTERS, Dennis M. SAURO, Mark EBERHARDT, William T. FISHER, Douglas G. EVANS
  • Publication number: 20150011822
    Abstract: The present disclosure is generally directed to surgical articles useful for implanting support members in patients. The articles disclosed herein include a support member, such as a sling for urinary incontinence, tissue anchors, filamentary elements for associating the support member with the anchors, and introducer needles for placing the anchors in a patient. The support members can also be configured for use in pelvic floor repair, such as for treating cystoceles, rectoceles, and enteroceles.
    Type: Application
    Filed: September 26, 2014
    Publication date: January 8, 2015
    Inventor: Douglas G. Evans
  • Publication number: 20150005149
    Abstract: Centrifuges are useful to, among other things, remove red blood cells from whole blood and retain platelets and other factors in a reduced volume of plasma. Platelet rich plasma (PRP) and or platelet poor plasma (PPP) can be obtained rapidly and is ready for immediate injection into the host. Embodiments may include valves, operated manually or automatically, to open ports that discharge the excess red blood cells and the excess plasma into separate receivers while retaining the platelets and other factors in the centrifuge chamber. High speeds used allow simple and small embodiments to be used at the patient's side during surgical procedures. The embodiments can also be used for the separation of liquids or slurries in other fields such as, for example, the separation of pigments or lubricants.
    Type: Application
    Filed: September 17, 2014
    Publication date: January 1, 2015
    Inventors: JOHN E. NASH, WILLIAM T. FISHER, Douglas G. Evans
  • Patent number: 8920402
    Abstract: A device suitable for removing material from a living being is provided, featuring at least an aspiration pump, powered by a motor. The aspiration pump and any optional infusate pump preferably feature a helical pumping mechanism, and operate at a high rate of rotation, thereby ensuring adequate pumping performance and flexibility. The helical pumping mechanism may be a helical coiled wire about a central core tube. The helical coil wire, whether together with, or independent of, the core tube, may be rotated to cause a pumping action. Additionally, a narrow crossing profile is maintained, ensuring that the device may reach more tortuous regions of the vasculature. In one embodiment, the system comprises a wire-guided mono-rail catheter with a working head mounted on a flexible portion of the catheter that can laterally displace away from the guide wire to facilitate thrombus removal.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: December 30, 2014
    Assignee: The Spectranetics Corporation
    Inventors: John E. Nash, Greg Walters, Dennis M. Sauro, Mark Eberhardt, William T. Fisher, Douglas G. Evans
  • Patent number: 8911406
    Abstract: A guide wire exchange system including an elongate, flexible, guide wire exchange catheter capable exchanging one guide wire for another in a safe, efficient, and secured manner, where a primary guide wire, after having been advanced through the body, is to be replaced with a secondary guide wire that is to be securely advanced through the body to the target site by the advancement of the exchange catheter over the path of the primary wire. The exchange catheter may include a securement element in order to releasably secure at least one guide wire to the exchange catheter at or near the distal end of the exchange catheter. Once secured, both the exchange catheter and the secured guide wire(s) may be advanced or retracted in a synchronous manner, without the possibility of divergence at the distal ends of the secured components as they are being manipulated by an operator.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: December 16, 2014
    Assignee: Kensey Nash Corporation
    Inventors: Douglas G. Evans, John E. Nash, Steven J. Link
  • Patent number: 8870733
    Abstract: Centrifuges are useful to, among other things, remove red blood cells from whole blood and retain platelets and other factors in a reduced volume of plasma. Platelet rich plasma (PRP) and or platelet poor plasma (PPP) can be obtained rapidly and is ready for immediate injection into the host. Embodiments may include valves, operated manually or automatically, to open ports that discharge the excess red blood cells and the excess plasma into separate receivers while retaining the platelets and other factors in the centrifuge chamber. High speeds used allow simple and small embodiments to be used at the patient's side during surgical procedures. The embodiments can also be used for the separation of liquids or slurries in other fields such as, for example, the separation of pigments or lubricants.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: October 28, 2014
    Assignee: Kensey Nash Corporation
    Inventors: John E. Nash, William T. Fisher, Douglas G. Evans
  • Publication number: 20140303430
    Abstract: A system for supporting the urethra using an introducer needle, the ends of which are flattened and which have openings therethrough, a handle having a latch mechanism which engages the opening in the flattened portion of the first end of the introducer needle, an implant, and a connector joining the end of the implant to the flattened portion of one of the ends of the introducer needle. These components are used to draw the implant into position, either through vaginal or abdominal incisions, to form a U-shaped loop beneath the urethra. The ends of the implant are adjusted to provide proper support for the urethra.
    Type: Application
    Filed: May 9, 2014
    Publication date: October 9, 2014
    Applicant: C.R. Bard, Inc.
    Inventors: Douglas G. Evans, Ken Butcher, Michele Gandy Davis