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).

  • Patent number: 10517633
    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: September 16, 2017
    Date of Patent: December 31, 2019
    Assignee: THE SPECTRANETICS CORPORATION
    Inventors: John E. Nash, Greg Walters, Dennis M. Sauro, Mark Eberhardt, William T. Fisher, Douglas G. Evans
  • Publication number: 20190232056
    Abstract: This disclosure describes, among other embodiments, a catheter. The catheter may include an outer layer defining a plurality of apertures therethrough, and a body defining at least one longitudinal lumen therein. The body may be within the outer layer, and the apertures may be radially outward of the lumen. The catheter may also include a plurality of electrodes positioned in or on the catheter, with each electrode being electrically exposed through an aperture of the plurality of apertures. A ribbon cable may extend through the lumen and include a plurality of leads, with the plurality of leads being electrically connected to the plurality of electrodes. The plurality of leads and electrodes may be formed by the deposition of conductive inks or paints, or by the electrodeposition of copper or other conductive metals or materials.
    Type: Application
    Filed: April 9, 2019
    Publication date: August 1, 2019
    Applicant: Lungpacer Medical Inc.
    Inventors: John E. NASH, Douglas G. EVANS, Viral S. THAKKAR
  • Publication number: 20190175908
    Abstract: This disclosure describes methods and systems for stimulating a respiratory muscle of a patient. The methods herein may include positioning a stimulator adjacent a nerve capable of activating the respiratory muscle; activating the stimulator to cause the respiratory muscle to contract; and ceasing the activation of the stimulator for a period of time. The level and the time of the stimulation may be adjusted for various applications. One or more of the steps in the methods may be repeated. The systems herein may include a stimulator for positioning adjacent a nerve capable of activating the respiratory muscle; a signal generator for providing stimulation energy to the stimulator; a sensor for detecting a response of the respiratory muscle to the stimulation energy; and a controller programmed to control the signal generator for providing stimulation with desired level and time.
    Type: Application
    Filed: December 11, 2017
    Publication date: June 13, 2019
    Applicant: Lungpacer Medical Inc.
    Inventors: Viral S. THAKKAR, Douglas G. EVANS
  • Patent number: 10293164
    Abstract: A catheter may include an outer layer defining a plurality of apertures therethrough, and a body defining at least one longitudinal lumen therein. The body may be within the outer layer, and the apertures may be radially outward of the lumen. The catheter may also include a plurality of electrodes positioned in or on the catheter, with each electrode being electrically exposed through an aperture of the plurality of apertures. A ribbon cable may extend through the lumen and include a plurality of leads, with the plurality of leads being electrically connected to the plurality of electrodes. The plurality of leads and electrodes may be formed by the deposition of conductive inks or paints, or by the electrodeposition of copper or other conductive metals or materials.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: May 21, 2019
    Assignee: Lungpacer Medical Inc.
    Inventors: John E. Nash, Douglas G. Evans, Viral Thakkar
  • Publication number: 20190126038
    Abstract: A method for positioning an intravascular catheter may include inserting the intravascular catheter into a venous system of a patient, wherein the catheter includes a plurality of electrodes, and multiple electrodes of the plurality of electrodes are configured to emit electrical signals; positioning a distal portion of the catheter in a first position; using one or more electrodes of the plurality of electrodes to acquire an ECG signal; based on the acquired ECG signal, adjusting the distal portion of the catheter to a second position different from the first position; identifying at least one first electrode of the plurality of electrodes to stimulate a first nerve; identifying at least one second electrode of the plurality of electrodes to stimulate a second nerve; and stimulating at least one of the first and second nerves to cause a contraction of a respiratory muscle.
    Type: Application
    Filed: December 17, 2018
    Publication date: May 2, 2019
    Inventors: Viral S. THAKKAR, Douglas G. EVANS, Matthew J. GANI
  • Publication number: 20190038897
    Abstract: A method for positioning an intravascular catheter may include inserting the intravascular catheter into a venous system of a patient, wherein the catheter includes a plurality of electrodes, and multiple electrodes of the plurality of electrodes are configured to emit electrical signals; positioning a distal portion of the catheter in a first position; using one or more electrodes of the plurality of electrodes to acquire an ECG signal; based on the acquired ECG signal, adjusting the distal portion of the catheter to a second position different from the first position; identifying at least one first electrode of the plurality of electrodes to stimulate a first nerve; identifying at least one second electrode of the plurality of electrodes to stimulate a second nerve; and stimulating at least one of the first and second nerves to cause a contraction of a respiratory muscle.
    Type: Application
    Filed: August 2, 2017
    Publication date: February 7, 2019
    Applicant: Lungpacer Medical Inc.
    Inventors: Viral S. Thakkar, Douglas G. Evans, Matthew J. Gani
  • Patent number: 10195429
    Abstract: A method for positioning an intravascular catheter may include inserting the intravascular catheter into a venous system of a patient, wherein the catheter includes a plurality of electrodes, and multiple electrodes of the plurality of electrodes are configured to emit electrical signals; positioning a distal portion of the catheter in a first position; using one or more electrodes of the plurality of electrodes to acquire an ECG signal; based on the acquired ECG signal, adjusting the distal portion of the catheter to a second position different from the first position; identifying at least one first electrode of the plurality of electrodes to stimulate a first nerve; identifying at least one second electrode of the plurality of electrodes to stimulate a second nerve; and stimulating at least one of the first and second nerves to cause a contraction of a respiratory muscle.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: February 5, 2019
    Assignee: Lungpacer Medical Inc.
    Inventors: Viral S. Thakkar, Douglas G. Evans, Matthew J. Gani
  • Publication number: 20190001127
    Abstract: This disclosure describes methods and systems for preventing, moderating, and/or treating brain injury. The methods herein may include obtaining a test result reflecting a condition of a brain in the subject, determining a stimulation parameter based on the test result, and stimulating a nerve based on the stimulation parameter, wherein stimulation of the nerve assists or causes contraction of a respiratory muscle in the subject. The systems herein may include a processor configured to: receive a test result reflecting a condition of a brain in a subject, and determine a stimulation parameter based on the test result; and a stimulator configured to stimulate a nerve based on the stimulation parameter, wherein stimulation of the nerve assists or causes contraction of a respiratory muscle in the subject.
    Type: Application
    Filed: June 29, 2018
    Publication date: January 3, 2019
    Inventors: Douglas G. EVANS, Viral S. THAKKAR, Matthew J. GANI
  • Publication number: 20190001126
    Abstract: This disclosure describes methods and systems for preventing, moderating, and/or treating brain injury. The methods herein may include obtaining a test result reflecting a condition of a brain in the subject, determining a stimulation parameter based on the test result, and stimulating a nerve based on the stimulation parameter, wherein stimulation of the nerve assists or causes contraction of a respiratory muscle in the subject. The systems herein may include a processor configured to: receive a test result reflecting a condition of a brain in a subject, and determine a stimulation parameter based on the test result; and a stimulator configured to stimulate a nerve based on the stimulation parameter, wherein stimulation of the nerve assists or causes contraction of a respiratory muscle in the subject.
    Type: Application
    Filed: June 29, 2018
    Publication date: January 3, 2019
    Inventors: Douglas G. EVANS, Viral S. THAKKAR, Matthew J. GANI
  • Publication number: 20180369581
    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: June 29, 2018
    Publication date: December 27, 2018
    Applicant: Lungpacer Medical Inc.
    Inventors: Viral S. THAKKAR, Joaquin Andres HOFFER, Bao Dung TRAN, Douglas G. EVANS, John E. NASH
  • Publication number: 20180339156
    Abstract: A catheter may include an outer layer defining a plurality of apertures therethrough, and a body defining at least one longitudinal lumen therein. The body may be within the outer layer, and the apertures may be radially outward of the lumen. The catheter may also include a plurality of electrodes positioned in or on the catheter, with each electrode being electrically exposed through an aperture of the plurality of apertures. A ribbon cable may extend through the lumen and include a plurality of leads, with the plurality of leads being electrically connected to the plurality of electrodes. The plurality of leads and electrodes may be formed by the deposition of conductive inks or paints, or by the electrodeposition of copper or other conductive metals or materials.
    Type: Application
    Filed: May 26, 2017
    Publication date: November 29, 2018
    Applicant: Lungpacer Medical Inc.
    Inventors: John E. NASH, Douglas G. EVANS, Viral THAKKAR
  • Patent number: 10039920
    Abstract: A method for positioning an intravascular catheter may include inserting the intravascular catheter into a venous system of a patient, wherein the catheter includes a plurality of electrodes, and multiple electrodes of the plurality of electrodes are configured to emit electrical signals; positioning a distal portion of the catheter in a first position; using one or more electrodes of the plurality of electrodes to acquire an ECG signal; based on the acquired ECG signal, adjusting the distal portion of the catheter to a second position different from the first position; identifying at least one first electrode of the plurality of electrodes to stimulate a first nerve; identifying at least one second electrode of the plurality of electrodes to stimulate a second nerve; and stimulating at least one of the first and second nerves to cause a contraction of a respiratory muscle.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: August 7, 2018
    Assignee: Lungpacer Medical, Inc.
    Inventors: Viral S. Thakkar, Douglas G. Evans, Matthew J. Gani
  • Patent number: 10035017
    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: September 22, 2016
    Date of Patent: July 31, 2018
    Assignee: Lungpacer Medical, Inc.
    Inventors: Viral Thakkar, Joaquin Andres Hoffer, Bao Dung Tran, Douglas G. Evans, John Nash
  • Patent number: 9987638
    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: September 17, 2014
    Date of Patent: June 5, 2018
    Assignee: DSM IP ASSETS, B.V.
    Inventors: John E. Nash, William T. Fisher, Douglas G. Evans
  • Patent number: 9981061
    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: March 15, 2016
    Date of Patent: May 29, 2018
    Assignee: DSM IP ASSETS, B.V.
    Inventors: Douglas G. Evans, Scott M. Goldman, Russell T. Kronengold
  • Publication number: 20180104703
    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: December 14, 2017
    Publication date: April 19, 2018
    Inventors: John E. Nash, William T. Fisher, Douglas G. Evans
  • Patent number: 9931504
    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 6, 2016
    Date of Patent: April 3, 2018
    Assignee: Lungpacer Medical, Inc.
    Inventors: Viral Thakkar, Joaquin Andres Hoffer, Bao Dung Tran, Douglas G. Evans, John Nash
  • Publication number: 20180078675
    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: Application
    Filed: March 15, 2016
    Publication date: March 22, 2018
    Inventors: Douglas G. EVANS, Scott M. GOLDMAN, Russell T. KRONEGOLD
  • Publication number: 20180071070
    Abstract: A method of treating urinary incontinence by implanting a transvaginal mid-urethral sling into a person includes engaging an introducer needle with an extension of an implant; advancing the introducer needle and the extension of the implant from a vaginal incision, along a first path posterior to a pubic bone, and through an abdomen of the patient; and disengaging the introducer needle from the extension of the implant and withdrawing the introducer needle backward along the first path from posterior to the pubic bone out of the vaginal incision.
    Type: Application
    Filed: November 8, 2017
    Publication date: March 15, 2018
    Inventors: Douglas G. Evans, Ken Butcher
  • Patent number: 9872750
    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: Grant
    Filed: May 22, 2015
    Date of Patent: January 23, 2018
    Assignee: Coloplast A/S
    Inventors: Douglas G. Evans, Ken Butcher