Patents by Inventor David R. Fischell

David R. Fischell 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: 10029112
    Abstract: A Transcranial Magnetic Stimulator (TMS) is used by a patient to treat a variety of human disorders including migraine headaches. The device has an electronic device to charge a capacitor to a high voltage which creates a high current in a magnetic coil which produces an intense magnetic pulse applied to the patient's head for treatment of migraine headaches or to other patient body parts to treat other disorders. The TMS may be reprogrammed remotely over the Internet to add additional pulses or additional time that the patient may use the TMS, during which time the TMS would continue to function. The data in the TMS may be sent over the Internet to the patient's physician and/or to a monitor to send the data to the company that manufactured the TMS.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: July 24, 2018
    Assignee: Eneura, Inc.
    Inventors: David R. Fischell, Robert E. Fischell, Joseph P. Fredrick, Stanley P. Woods
  • Patent number: 10022059
    Abstract: An intravascular catheter for nerve activity ablation and/or sensing includes one or more needles advanced through supported guide tubes (needle guiding elements) which expand to contact the interior surface of the wall of the renal artery or other vessel of a human body allowing the needles to be advanced though the vessel wall into the extra-luminal tissue including the media, adventitia and periadvential space. The catheter also includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened needles are advanced to penetrate into the vessel wall. Electrodes near the distal ends of the needles allow sensing of nerve activity before and after attempted renal denervation. In a combination embodiment ablative energy or fluid is delivered from the needles in or near the adventitia to ablate nerves outside of the media while sparing nerves within the media.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: July 17, 2018
    Assignee: Ablative Solutions, Inc.
    Inventors: David R. Fischell, Tim A. Fischell, Vartan Ghazarossian, Steven Almany, Michael Sasha John
  • Publication number: 20180193596
    Abstract: A catheter-based/intravascular ablation (denervation) system includes a multiplicity of needles which expand open around a central axis to engage the wall of a blood vessel, or the wall of the left atrium, allowing the injection of a cytotoxic or/or neurotoxic solution for ablating conducting tissue, or nerve fibers around the ostium of the pulmonary vein, or circumferentially in or just beyond the outer layer of the renal artery. The expandable needle delivery system is formed with self-expanding materials and include structures, near the end portion of the needles, or using separate guide tubes. The system also includes means to limit and/or adjust the depth of penetration of the ablative fluid into the tissue of the wall of the targeted blood vessel. The preferred embodiment of the catheter delivered through the vascular system of a patient includes a multiplicity of expandable guide tubes that engage the wall of a blood vessel.
    Type: Application
    Filed: March 9, 2018
    Publication date: July 12, 2018
    Inventors: David R. Fischell, Tim A. Fischell
  • Patent number: 9968798
    Abstract: A transcranial magnetic stimulation device has a capacitor for storing electrical energy. A wire coil delivers a magnetic pulse when the capacitor is actuated to cause current flow through the wire coil. A charging circuit charges the capacitor and there is a sensor which includes an unactivated state and an activated state. A control circuit connected to the body sensor initiates the delivery of a magnetic pulse when current from the capacitor flows through the wire coil.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: May 15, 2018
    Assignee: Eneura, Inc.
    Inventors: David R. Fischell, Robert E. Fischell, Victor Fei, Priyanka Venkatesh, Qi Rui, Rachel Hyder, Abirvab Deb
  • Patent number: 9949652
    Abstract: An intravascular catheter for nerve activity ablation and/or sensing includes one or more needles advanced through supported guide tubes (needle guiding elements) which expand to contact the interior surface of the wall of the renal artery or other vessel of a human body allowing the needles to be advanced though the vessel wall into the extra-luminal tissue including the media, adventitia and periadvential space. The catheter also includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened needles are advanced to penetrate into the vessel wall. Electrodes near the distal ends of the needles allow sensing of nerve activity before and after attempted renal denervation. In a combination embodiment ablative energy or fluid is delivered from the needles in or near the adventitia to ablate nerves outside of the media while sparing nerves within the media.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: April 24, 2018
    Assignee: Ablative Solutions, Inc.
    Inventors: David R. Fischell, Tim A. Fischell, Vartan Ghazarossian, Steven Almany, Michael Sasha John
  • Patent number: 9931046
    Abstract: An intravascular catheter for peri-vascular nerve activity sensing or measurement includes multiple needles advanced through supported guide tubes (needle guiding elements) which expand with open ends around a central axis to contact the interior surface of the wall of the renal artery or other vessel of a human body allowing the needles to be advanced though the vessel wall into the perivascular space. The system also may include means to limit and/or adjust the depth of penetration of the needles. The catheter also includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened needles are advanced to penetrate into the vessel wall.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: April 3, 2018
    Assignee: Ablative Solutions, Inc.
    Inventors: David R. Fischell, Tim A. Fischell, Vartan Ghazarossian, Steven Almany
  • Publication number: 20180071019
    Abstract: At the present time, physicians often treat patients with atrial fibrillation (AF) using radiofrequency (RF) catheter systems to ablate conducting tissue in the wall of the Left Atrium of the heart around the ostium of the pulmonary veins. These systems are expensive and take time consuming to use. The present invention circular ablation system CAS includes a multiplicity of expandable needles that can be expanded around a central axis and positioned to inject a fluid like ethanol to ablate conductive tissue in a ring around the ostium of a pulmonary vein quickly and without the need for expensive capital equipment. The expansion of the needles is accomplished by self-expanding or balloon expandable structures. The invention includes centering means so that the needles will be situated in a pattern surrounding the outside of the ostium of a vein. Also included are members that limit the distance of penetration of the needles into the wall of the left atrium.
    Type: Application
    Filed: September 21, 2017
    Publication date: March 15, 2018
    Inventors: David R. Fischell, Tim A. Fischell
  • Publication number: 20170332926
    Abstract: An intravascular catheter for nerve activity ablation and/or sensing includes one or more needles advanced through supported guide tubes (needle guiding elements) which expand to contact the interior surface of the wall of the renal artery or other vessel of a human body allowing the needles to be advanced though the vessel wall into the extra-luminal tissue including the media, adventitia and periadvential space. The catheter also includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened needles are advanced to penetrate into the vessel wall. Electrodes near the distal ends of the needles allow sensing of nerve activity before and after attempted renal denervation. In a combination embodiment ablative energy or fluid is delivered from the needles in or near the adventitia to ablate nerves outside of the media while sparing nerves within the media.
    Type: Application
    Filed: July 28, 2017
    Publication date: November 23, 2017
    Inventors: David R. Fischell, Tim A. Fischell, Vartan Ghazarossian, Steven Almany, Michael Sasha John
  • Publication number: 20170304594
    Abstract: An intravascular catheter for peri-vascular and/or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, and/or nerve fibers in the outer layer or deep to the outer layer of the vessel, or in prostatic tissue. The system may also include a means to limit and/or adjust the depth of penetration of the ablative fluid into and beyond the tissue of the vessel wall. The catheter may also include structures which provide radial and/or lateral support to the guide tubes so that the guide tubes expand uniformly and maintain their position against the interior surface of the vessel wall as the sharpened injection needles are advanced to penetrate into the vessel wall.
    Type: Application
    Filed: December 19, 2016
    Publication date: October 26, 2017
    Inventors: David R. Fischell, Tim A. Fischell, Robert Ryan Ragland, Darrin James Kent, Andy Edward Denison, Eric Thomas Johnson, Jeff Alan Burke, Christopher Scott Hayden, Robert E. Fischell
  • Patent number: 9795441
    Abstract: At the present time, physicians often treat patients with atrial fibrillation (AF) using radiofrequency (RF) catheter systems to ablate conducting tissue in the wall of the Left Atrium of the heart around the ostium of the pulmonary veins. These systems are expensive and take time consuming to use. The present invention circular ablation system CAS includes a multiplicity of expandable needles that can be expanded around a central axis and positioned to inject a fluid like ethanol to ablate conductive tissue in a ring around the ostium of a pulmonary vein quickly and without the need for expensive capital equipment. The expansion of the needles is accomplished by self-expanding or balloon expandable structures. The invention includes centering means so that the needles will be situated in a pattern surrounding the outside of the ostium of a vein. Also included are members that limit the distance of penetration of the needles into the wall of the left atrium.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: October 24, 2017
    Assignee: Ablative Solutions, Inc.
    Inventors: David R. Fischell, Tim A. Fischell
  • Patent number: 9788739
    Abstract: A medical alarm communications system comprises a pager like device to be kept near a patient. The pager like device communicates medical alerts regarding the patient to a remote central station, which can provide therapeutic and/or diagnostic assistance by communicating to the pager like device. When the pager like device determines that an alert should be sent to the central station, it attempts to establish communication with the central station according to a primary communication protocol. If this attempt is unsuccessful according to some predetermined criteria (e.g. too much time has elapsed before communication is established), then the pager like device generates a message to the patient indicative of the failure, and The attempts to establish communication with the central station according to a secondary communication protocol.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: October 17, 2017
    Assignee: Angel Medical Systems, Inc.
    Inventors: Michael Sasha John, David R. Fischell
  • Patent number: 9724533
    Abstract: A transcranial magnetic stimulation (TMS) device has at least one capacitor. A charging circuit charges the capacitor. The TMS device includes a magnetic coil for delivering magnetic pulses to a person's body. A bleed resistor is within the TMS device to minimize forces applied to the bleed resistor where the bleed resistor is aligned with magnetic field lines generated by the magnetic pulses.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: August 8, 2017
    Assignee: Eneura, Inc.
    Inventors: Robert E. Fischell, David R. Fischell, Leopold Rolih, Michael Graves, Joseph P. Fredrick, Stanley P. Woods, Richard Barthel
  • Patent number: 9694195
    Abstract: A system for treating neurological conditions by low-frequency time varying electrical stimulation includes an electrical device for applying such low-frequency energy, in a range below approximately 10 Hz, to the patient's brain tissue. An implantable embodiment applies direct electrical stimulation to electrodes implanted in or on the patient's brain, while a non-invasive embodiment causes a magnetic field to induce electrical currents in the patient's brain.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: July 4, 2017
    Assignee: NeuroPace, Inc.
    Inventors: David R. Fischell, Adrian R. M. Upton
  • Patent number: 9675815
    Abstract: A transcranial magnetic stimulation (TMS) device for the treatment of migraine headaches which includes at least one capacitor as well as a charging circuit for charging the capacitor contained in the TMS device. A magnetic coil delivers a magnetic pulse upon discharge of the capacitor. Inner and outer end wire segments of the magnetic coil are oriented parallel to a direction of magnetic field lines of the magnetic pulse.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: June 13, 2017
    Assignee: Eneura, Inc.
    Inventors: Robert E. Fischell, David R. Fischell, Leopold Rolih, Michael Graves, Joseph P. Fredrick, Stanley P. Woods, Richard Barthel
  • Patent number: 9649049
    Abstract: An interactive implantable medical device system includes an implantable medical device and a network-enabled external device capable of bi-directional communication and interaction with the implantable medical device. The external device is programmed to interact with other similarly-enabled devices. The system facilitates improved patient care by eliminating unnecessary geographic limitations on implantable medical device interrogation and programming, and by allowing patients, physicians, and other users to access medical records, history, and information and to receive status and care-related alerts and messages anywhere there is access to a communications network.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: May 16, 2017
    Assignee: NeuroPace, Inc.
    Inventors: Benjamin D. Pless, David R. Fischell, Barbara Gibb, Lisa Guzzo, Adrian R. M. Upton
  • Publication number: 20170119565
    Abstract: A stent delivery catheter including a catheter tubing defining a lumen therethrough, a balloon disposed near a distal end of the catheter tubing and moving between deflated and inflated states, and proximal and distal balloon control bands concentrically arranged around respective proximal and distal end portions of the balloon. The proximal balloon control band has a proximal end located proximally of a proximal end of the balloon and a distal end located adjacent a proximal end of a received unexpanded stent. The distal balloon control band has a proximal end located adjacent a distal end of the received unexpanded stent and a distal end located distally of a distal end of the balloon. The balloon control bands each have a diametric cross-section larger than the balloon in an uninflated state and the unexpanded stent received over the balloon to impede axial movement of the unexpanded stent off of the balloon.
    Type: Application
    Filed: January 17, 2017
    Publication date: May 4, 2017
    Applicant: Svelte Medical Systems, Inc.
    Inventors: Robert E. Fischell, David R. Fischell, Fernando DiCaprio
  • Patent number: 9585781
    Abstract: A stent delivery catheter including a catheter tubing defining a lumen therethrough, a balloon disposed near a distal end of the catheter tubing and moving between deflated and inflated states, and proximal and distal balloon control bands concentrically arranged around respective proximal and distal end portions of the balloon. The proximal balloon control band has a proximal end located proximally of a proximal end of the balloon and a distal end located adjacent a proximal end of a received unexpanded stent. The distal balloon control band has a proximal end located adjacent a distal end of the received unexpanded stent and a distal end located distally of a distal end of the balloon. The balloon control bands each have a diametric cross-section larger than the balloon in an uninflated state and the unexpanded stent received over the balloon to impede axial movement of the unexpanded stent off of the balloon.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: March 7, 2017
    Assignee: Svelte Medical Systems, Inc.
    Inventors: Robert E. Fischell, David R. Fischell, Fernando DiCaprio
  • Patent number: 9561384
    Abstract: A Transcranial Magnetic Stimulator (TMS) is used by a patient to treat a variety of human disorders including migraine headaches. The device has an electronic device to charge a capacitor to a high voltage which creates a high current in a magnetic coil which produces an intense magnetic pulse applied to the patient's head for treatment of migraine headaches or to other patient body parts to treat other disorders. The TMS has a geometric shape where each one of the patient's thumbs passes through a hole formed into the cover of the TMS and as many as the four fingers of each hand may be placed into a groove in the cover to accommodate the patients fingers and provide a secure holding mechanism.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: February 7, 2017
    Assignee: Eneurak, Inc.
    Inventors: Robert E. Fischell, David R. Fischell, Joseph P. Fredrick, Stanley P. Woods
  • Patent number: 9554849
    Abstract: An intravascular catheter for peri-vascular and/or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, and/or nerve fibers in the outer layer or deep to the outer layer of the vessel. A method of treating hypertension involves injecting an ablative fluid such as ethanol deep into zones in the wall of the renal artery such that the zones of fluid merge to form a circumferential ablation ring at a depth which ablates sympathetic nerves while minimizing injury to interior layers of the vessel wall.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: January 31, 2017
    Assignee: Ablative Solutions, Inc.
    Inventors: David R. Fischell, Tim A. Fischell, Robert Ryan Ragland, Darrin James Kent, Andy Edward Denison, Eric Thomas Johnson, Jeff Alan Burke, Christopher Scott Hayden, Robert E. Fischell
  • Patent number: 9539047
    Abstract: An intravascular catheter for peri-vascular or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand with open ends around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, such as nerve fibers in the outer layer or deep to the outer layer of the vessel, or in prostatic tissue. The system also includes controls the depth of penetration of the ablative fluid into and beyond the tissue of the vessel wall. The preferred embodiment of the catheter includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened injection needles are advanced to penetrate into the vessel wall.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: January 10, 2017
    Assignee: Ablative Solutions, Inc.
    Inventors: David R. Fischell, Tim A. Fischell, Robert Ryan Ragland, Darrin James Kent, Andy Edward Denison, Eric Thomas Johnson, Jeff Alan Burke, Christopher Scott Hayden