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).

  • Publication number: 20130274674
    Abstract: A catheter-based/intravascular ablation system includes needles which expand around a central axis to engage a blood vessel or left atrium wall, allowing the injection of an ablative solution for ablating conducting tissue, or nerve fibers around the ostium of the pulmonary vein or around the renal artery. The system includes means to adjust the depth of penetration into the tissue of the targeted blood vessel wall. The catheter can include expandable guide tubes that engage the blood vessel wall. Injection needles having injection egress at or near their sharpened distal end are then advanced through the guide tubes to penetrate the blood vessel wall to a prescribed depth. The ability to provide PeriVascular injection only affecting the outer layer(s) of a blood vessel without affecting the media has particular application for PeriVascular Renal Denervation (PVRD) of the sympathetic nerves which lie in or outside the adventitia of the renal artery.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 17, 2013
    Inventors: David R. Fischell, Tim A. Fischell
  • Patent number: 8543208
    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: September 7, 2009
    Date of Patent: September 24, 2013
    Assignee: NeuroPace, Inc.
    Inventors: Benjamin D. Pless, David R. Fischell, Barbara Gibb, Lisa Guzzo, Adrian R. M. Upton
  • Patent number: 8538552
    Abstract: The invention describes fluid-based lead systems. The fluid-based leads may be used for sensing from, and stimulating of, human tissue. The fluid-based leads can be used to transfer signals between two locations. The fluid-based leads offer advantages when communicating signals along their length since the leads may be safely used in magnetic environments and offer increased elastic characteristics which are less prone to breakage. The leads can be used externally or with implantable devices, such as those used to monitor, and deliver therapy during the treatment of medical disorders such as cardiac and neurological disorders.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: September 17, 2013
    Assignee: Angel Medical Systems, Inc.
    Inventors: Michael Sasha John, David R. Fischell
  • Patent number: 8512257
    Abstract: Disclosed is a system for the detection of cardiac events (a guardian system) that includes an implanted device called a cardiosaver, a physician's programmer and an external alarm system. The system is designed to provide early detection of cardiac events such as acute myocardial infarction or exercise induced myocardial ischemia caused by an increased heart rate or exertion. The system can also alert the patient with a less urgent alarm if a heart arrhythmia is detected. Using one or more detection algorithms, the cardiosaver can detect a change in the patient's electrogram that is indicative of a cardiac event within five minutes after it occurs and then automatically warn the patient that the event is occurring. To provide this warning, the guardian system includes an internal alarm sub-system (internal alarm means) within the cardiosaver and/or an external alarm system (external alarm means).
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: August 20, 2013
    Assignee: Angel Medical Systems, Inc.
    Inventors: David R. Fischell, Jonathan Harwood, Robert E. Fischell, Steven R. Johnson
  • Patent number: 8483812
    Abstract: Disclosed are methods for detecting an acute myocardial infarction (i.e., a heart attack) at the earliest possible time and promptly warning the patient that he should immediately seek medical care. The present invention includes an implantable electronic system that can sense a change in the patient's electrogram that is indicative of a heart attack. If a heart attack is sensed, the device would then cause an implantable and/or externally located alarm to be actuated to warn the patient of his condition and a medical practitioner at a remote diagnostic center would receive the patient's electrogram for analysis. The patient or a caretaker would then be informed to self-inject medication through a subcutaneous, pass-through drug port that can be a separate device or integrated into the implanted device that is designed for the early detection of a heart attack.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: July 9, 2013
    Assignee: Angel Medical Systems, Inc.
    Inventors: Robert E. Fischell, David R. Fischell, Tim A. Fischell, Scott J. S. Fischell
  • Patent number: 8457725
    Abstract: An implanted device which includes a vibrator having a drive motor and a drive circuit. An accelerometer is connected to the vibrator and senses alarm test data related to the displacement of the vibrator. A power source provides electricity to the implanted device and a processor is configured for bi-directional wireless communication. The processor is configured for receiving a command from an external device for performance of an alarm test and the processor analyzes the alarm test data for generating test results.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: June 4, 2013
    Assignee: Angel Medical Systems, Inc.
    Inventors: David R. Fischell, Michael Sasha John, Jonathan Harwood
  • Patent number: 8454677
    Abstract: A stent in the form of a thin-walled, multi-cellular tubular structure is provided. The tubular structure has a longitudinal axis and the stent includes a plurality of circumferential sets of strut members. Each set of the strut members is longitudinally displaced from each other and connected to each other by longitudinally extending links. Each set of the strut members forms a closed and cylindrical portion of the stent. Further, each set of the strut members includes a plurality of connected curve sections and diagonal sections. The sets of the strut members further include end sets of strut members located at each end of the stent and central sets of strut members located between the end sets of the strut members. The diagonal sections of the end sets of the strut members have a center portion and two ends.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: June 4, 2013
    Assignee: Cordis Corporation
    Inventors: Robert E. Fischell, David R. Fischell, Janet Burpee
  • Patent number: 8452404
    Abstract: A device for detecting cardiac ischemia is disclosed. The device includes a processor that is configured to operate in three different modes according to relative frequency of different beat types. If beats of a first beat type, such as ventricularly paced beats, are predominant, the processor ignores other beat types and performs ischemia detection only on ventricularly paced beats. Conversely, if beats of a second beat type, such as sinus or atrially paced beats, are predominant, the processor ignores ventricularly paced beats and performs ischemia detection only on sinus or atrially paced beats. If there is a mixture of beat types such that neither predominates, the processor performs ischemia detection on both beat types.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: May 28, 2013
    Assignee: Angel Medical Systems, Inc.
    Inventors: David R. Fischell, Michael Sasha John, David Keenan
  • Publication number: 20130079746
    Abstract: A thin-walled introducer sheath is described. In some embodiments, the introducer sheath includes structural support components, such as wires, used in connection with a polymeric inner coating, a polymeric outer coating, or both. Further, in some embodiments, the wire components are annealed to reduce cold-work-related stresses and hardness. Use of annealed components may enable a reduction in the thickness of the polymeric outer coating in some applications.
    Type: Application
    Filed: March 27, 2012
    Publication date: March 28, 2013
    Applicant: FISCHELL INNOVATIONS, LLC
    Inventors: Robert E. Fischell, Tim A. Fischell, David R. Fischell
  • Patent number: 8348925
    Abstract: An introducer sheath for placement into the vascular system of a human subject. The introducer sheath has a tubular shaft, a side arm, and a hemostasis valve with an integrated attachment mechanism for attaching and detaching a proximal end of the introducer sheath to and from the skin of the human subject.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: January 8, 2013
    Assignee: Fischell Innovations, LLC
    Inventors: Robert E. Fischell, Tim A. Fischell, David R. Fischell, Scott J. S. Fischell
  • Patent number: 8301231
    Abstract: Alarm tests are disclosed which use alarm test signals to assess alarms provided by medical devices. Especially relevant are implanted devices that monitor cardiac activity and provide notification in response to medically relevant events. Alarm tests can occur periodically, or in response to a patient, doctor, or remote party initiating the alarm test. Alarm tests can also occur during the actual alarms issued to detected medical events. Alarm tests lead to pass or fail results, which in turn may cause operations to contingently occur. Alarm test failure in the auditory, visual, or tactile modality, may cause an alternatively defined alarm signal to be used as back-up. Alarm test logs can store alarm test results, including quantification of the measured alarm signal. Rapid alarm tests are described, as are various methods of accurately measuring characteristics of the test signal in ambulatory patients, which are especially relevant to a vibration alarm.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: October 30, 2012
    Assignee: Angel Medical, Inc.
    Inventors: David R. Fischell, Jonathan Harwood, Michael Sasha John
  • Patent number: 8275457
    Abstract: A device for detecting cardiac ischemia is disclosed. The device includes a processor that is configured to distinguish between two different heart beats types such as ventricularly paced beats and supraventricular beats. The processor applies different ischemia tests to the two different beat types, and generates alert when it detects ischemia.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: September 25, 2012
    Assignee: Angel Medical Systems, Inc.
    Inventors: David R. Fischell, Michael Sasha John, Bruce Hopenfeld, David Keenan
  • Patent number: 8269634
    Abstract: Alarm tests are disclosed which use alarm test signals to assess alarms provided by medical devices. Especially relevant are implanted devices that monitor cardiac activity and provide notification in response to medically relevant events. Alarm tests can occur periodically, or in response to a patient, doctor, or remote party initiating the alarm test. Alarm tests can also occur during the actual alarms issued to detected medical events. Alarm tests lead to pass or fail results, which in turn may cause operations to contingently occur. Alarm test failure in the auditory, visual, or tactile modality, may cause an alternatively defined alarm signal to be used as back-up. Alarm test logs can store alarm test results, including quantification of the measured alarm signal. Rapid alarm tests are described, as are various methods of accurately measuring characteristics of the test signal in ambulatory patients, which are especially relevant to a vibration alarm.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: September 18, 2012
    Assignee: Angel Medical Systems, Inc.
    Inventors: David R. Fischell, Michael Sasha John
  • Patent number: 8262556
    Abstract: Disclosed is a means and method for the treatment of migraine headaches and other disorders of the human body by the application of one or more intense magnetic pulses. By placing an intense magnetic field pulse(s) onto a certain region of the brain, an electrical current can be generated in the cerebral cortex that can stop a migraine headache in some patients or at least decrease its severity. The device to perform this function can be called a “magnetic pulser system.” This system can be made in one piece and powered by plugging into a household or automobile receptacle or from a battery. The pulser system uses capacitors that are first charged to a high voltage and then discharged into a coil that creates the intense magnetic pulse. Both visual and auditory signals can be provided by the pulser system to assist the patient in using the device.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: September 11, 2012
    Assignee: Neuralieve, Inc.
    Inventors: Robert E. Fischell, Scott J. S. Fischell, David R. Fischell, Emily Ma, Kuen Chang, Dave Vondle, Benjamin Pless
  • Patent number: 8265740
    Abstract: Disclosed is a system for the detection of cardiac events that includes an implanted device called a cardiosaver, a physician's programmer and an external alarm system. The system is designed to provide early detection of cardiac events such as acute myocardial infarction or exercise induced myocardial ischemia caused by an increased heart rate or exertion. The system can also alert the patient with a less urgent alarm if a heart arrhythmia is detected. Using different algorithms, the cardiosaver can detect a change in the patient's electrogram that is indicative of a cardiac event within five minutes after it occurs and then automatically warn the patient that the event is occurring. To provide this warning, the system includes an internal alarm sub-system (internal alarm means) within the cardiosaver and/or an external alarm system (external alarm means) which are activated after the ST segment of the electrogram exceeds a preset threshold.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: September 11, 2012
    Assignee: Angel Medical Systems, Inc.
    Inventors: David R. Fischell, Tim A. Fischell, Jonathan Harwood, Robert E. Fischell, Steven R. Johnson
  • Patent number: 8244338
    Abstract: A system for cardiac event detection over varying time scales includes implanted electrical leads forming a portion of an implanted cardiotracker and external equipment including external alarm mechanisms and a physicians programmer. The cardiac event detection system monitors the degradation of a patient's cardiovascular condition from one or more causes. A processor computes the electrical signals of a heart signal parameter's average value over a time period for a multiplicity of heart rate ranges. The electrical signals are stored and information transmitted to external equipment.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: August 14, 2012
    Assignee: Angel Medical Systems, Inc.
    Inventors: David R. Fischell, Robert E. Fischell, Jonathan Harwood, Steven R. Johnson
  • Patent number: 8243267
    Abstract: A system for the detection of compounds, including a target biological organism or component from a sample, using one or more reactant that will bind to the biological organism or compound forming a Raman active product, concentrating the Raman active product, and detecting the Raman active product using Raman light scattering.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: August 14, 2012
    Inventors: Neal Arthur Siegel, David R. Fischell
  • Patent number: 8224430
    Abstract: A system for the detection of cardiac events occurring in a human patient is provided. At least two electrodes are included in the system for obtaining an electrical signal from a patient's heart. An electrical signal processor is electrically coupled to the electrodes for processing the electrical signal and a patient alarm means is further provided and electrically coupled to the electrical signal processor. The electrical signal is acquired in the form of electrogram segments, which are categorized according to heart rate, ST segment shift and type heart rhythm (normal or abnormal). Baseline electrogram segments are tracked over time.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: July 17, 2012
    Assignee: Angel Medical Systems, Inc.
    Inventors: David R. Fischell, Tim A. Fischell, Jonathan Harwood, Robert E. Fischell, Steven R. Johnson, Bruce Hopenfeld, Michael Sasha John
  • Publication number: 20120158116
    Abstract: A balloon disposed near a distal end of the catheter tubing and moving between deflated and inflated states, and proximal and distal stent retention bands concentrically arranged around respective proximal and distal end portions of the balloon. The proximal stent retention band has a distal end located within 2 mm of the proximal end of a stent coaxially received by the balloon and the distal stent retention band has a largest diameter within 2 mm of the distal end of the stent received by the balloon.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 21, 2012
    Applicant: Svelte Medical Systems, Inc.
    Inventors: Robert E. Fischell, David R. Fischell
  • Patent number: 8170653
    Abstract: A system for the detection of cardiac events occurring in a human patient is provided. At least two electrodes are included in the system for obtaining an electrical signal from a patient's heart. An electrical signal processor is electrically coupled to the electrodes for processing the electrical signal and a patient alarm means is further provided and electrically coupled to the electrical signal processor. The electrical signal is acquired in the form of electrogram segments, which are categorized according to heart rate, ST segment shift and type heart rhythm (normal or abnormal). Baseline electrogram segments are tracked over time.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: May 1, 2012
    Assignee: Angel Medical Systems, Inc.
    Inventors: David R. Fischell, Jonathan Harwood, Steven R. Johnson, David Keenan