Patents by Inventor Stephen J. Swift

Stephen J. Swift 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: 9522280
    Abstract: In accordance with an embodiment, a system and method is provided for providing communications between first and second implantable medical devices (IMDs). The system comprises a first implantable medical device (IMD) configured to transmit a first event message during or preceding a first cardiac cycle, and a second IMD configured to receive the first event message, wherein receipt of the first event message configures the second IMD to generate pacing pulses for only a predetermined number (ā€œnā€) of consecutive cardiac cycles, wherein n is an integer equal to or greater than 2.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: December 20, 2016
    Assignee: Pacesetter, Inc.
    Inventors: Matthew G. Fishler, Benjamin T. Persson, Suresh Gurunathan, Donald Chin, Stephen J. Swift
  • Publication number: 20160121128
    Abstract: In accordance with an embodiment, a system and method is provided for providing communications between first and second implantable medical devices (IMDs). The system comprises a first implantable medical device (IMD) configured to transmit a first event message during or preceding a first cardiac cycle, and a second IMD configured to receive the first event message, wherein receipt of the first event message configures the second IMD to generate pacing pulses for only a predetermined number (ā€œnā€) of consecutive cardiac cycles, wherein n is an integer equal to or greater than 2.
    Type: Application
    Filed: November 3, 2015
    Publication date: May 5, 2016
    Inventors: Matthew G. Fishler, Benjamin T. Persson, Suresh Gurunathan, Donald Chin, Stephen J. Swift
  • Patent number: 6532238
    Abstract: An interconnection structure including an interconnection artery ensuring the parallel transfer, on a group of conductors, of information to be exchanged, configured in at least one ring (50; 60; 70) on which information circulates in a closed loop and in a one-way direction. The artery has a plurality of coupling points to the addressable elements of the microcomputer. Some of the points of coupling (10, 20, 30) include a register associated with the corresponding addressable element with the microcomputer, and others include a gateway (G1, G2. . . . GN) towards, and from, another ring of a lower order, on which lower order ring information also circulates in a closed loop and in a one-way direction. This results in a structure of plurality of hierarchised rings. The interconnection structure is particularly useful for battery operated processor controlled devices, such as active implantable medical devices, pacemakers, defibrillators and the like.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: March 11, 2003
    Assignee: ELA Medical S.A.
    Inventors: Christophe Lecoutre, Isabelle Izaute, Stephen J. Swift
  • Patent number: 4488553
    Abstract: A tachycardia control pacer for which placing a magnet over the patient's chest results in the generation of two pulses, the time separation between which is an indication of the battery potential. Application of the magnet in this way also holds the device off, after the two pulses are generated, so that if the device is causing him discomfort the patient can temporarily disable it until the physician can program it off. Application of a magnet to the patient's chest, or programming of the device, resets two scanned inter-pulse time intervals to the values programmed by the physician. The next scanning begins with the programmed time values. In this way the physician, after inducing tachycardia, can verify the programmed time parameters rapidly by observing the patient's ECG waveform, without having to wait several minutes until scanning from the previously retained successful values would otherwise progress to the programmed values.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: December 18, 1984
    Assignee: Telectronics Pty. Ltd.
    Inventors: Tibor A. Nappholz, Stephen J. Swift
  • Patent number: 4488554
    Abstract: A tachycardia control pacer for which placing a magnet over the patient's chest results in the generation of two pulses, the time separation between which is an indication of the battery potential. Application of the magnet in this way also holds the device off, after the two pulses are generated, so that if the device is causing him discomfort the patient can temporarily disable it until the physician can program it off. Application of a magnet to the patient's chest, or programming of the device, resets two scanned inter-pulse time intervals to the values programmed by the physician. The next scanning begins with the programmed time values. In this way the physician, after inducing tachycardia, can verify the programmed time parameters rapidly by observing the patient's ECG waveform, without having to wait several minutes until scanning from the previously retained successful values would otherwise progress to the programmed values.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: December 18, 1984
    Assignee: Telectronics Pty. Ltd.
    Inventors: Tibor A. Nappholz, Stephen J. Swift
  • Patent number: 4427011
    Abstract: A tachycardia control pacer in which at least one scanned pulse is generated following each tachycardia confirmation, and the last-used pulse timing is retained following the next tachycardia termination for subsequent first use following the next tachycardia confirmation. The tachycardia termination detecting circuit does not respond to the time interval between at least the first two heartbeats following a generated pulse, to prevent a false determination of tachycardia termination due to the excessive pauses which sometimes occur immediately after pacing despite the fact that tachycardia has not terminated.
    Type: Grant
    Filed: March 18, 1982
    Date of Patent: January 24, 1984
    Assignee: Telectronics Pty. Ltd.
    Inventors: Roworth A. J. Spurrell, Tibor A. Nappholz, Stephen J. Swift
  • Patent number: 4414979
    Abstract: There is disclosed an implantable bone growth stimulator whose direct-current output can be monitored. Rather than to interrogate the device, e.g., by using a control magnet as in the heart pacer art, the device continuously transmits pulses of electromagnetic energy at a rate proportional to the current being delivered. The continuous transmission expends no more than about five percent of the total power. Instead of using an electrode lead as an antenna for radiating the pulses, a separate coil inside the device is utilized so that the therapeutic current itself is in no way affected by the pulse transmission. Effective transmission is achieved despite the fact that the device is hermetically sealed in a titanium case. Also included is an electronic switch for drastically limiting power drawn from the battery until implantation takes place, in order to provide an extended shelf life.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: November 15, 1983
    Assignee: Telectronics Pty. Ltd.
    Inventors: Michael S. Hirshorn, David K. Money, Stephen J. Swift, Robert J. Evans
  • Patent number: 4407289
    Abstract: An improved pacer for controlling tachycardia. Placing a magnet over the patient's chest results in the generation of two pulses, the time separation between which is an indication of the battery potential. Application of the magnet in this way also holds the device off, after the two pulses are generated, so that if the device is causing him discomfort the patient can temporarily disable it until the physician can program it off. Application of a magnet to the patient's chest, or programming of the device, also resets two start-of-scan time intervals to the values programmed by the physician. The next scanning begins with the programmed time values. In this way the physician, after inducing tachycardia, can verify the programmed time parameters rapidly by observing the patient's ECG waveform, without having to wait several minutes until scanning from previously retained successful values would otherwise progress to the programmed values.
    Type: Grant
    Filed: March 19, 1981
    Date of Patent: October 4, 1983
    Assignee: Telectronics Pty. Ltd.
    Inventors: Tibor A. Nappholz, Stephen J. Swift
  • Patent number: 4406287
    Abstract: There is disclosed an improved pacer for controlling tachycardia. Following each tachycardia confirmation, a burst of stimulating pulses is generated. The rates of the bursts increase from cycle to cycle; thus following each tachycardia confirmation, a pulse burst at a different rate is generated. The number of pulses in a burst is similarly scanned, a complete rate scan taking place for each pulse number in a scan. The rate of a burst and the number of pulses in it which are successful in terminating tachycardia are stored, and following the next tachycardia confirmation the stored rate and pulse number are used for the first burst which is generated. In this manner, there is a greater likelihood that tachycardia will be terminated following the first burst since a previously successful rate and pulse number are used. Only if success is not achieved does scanning of the burst rate and pulse number ensue, starting with the previously successful rate and pulse number.
    Type: Grant
    Filed: July 17, 1981
    Date of Patent: September 27, 1983
    Assignee: Telectronics Pty. Ltd.
    Inventors: Tibor A. Nappholz, Stephen J. Swift, Alan J. Camm
  • Patent number: 4398536
    Abstract: There is disclosed an improved pacer for controlling tachycardia. Following each tachycardia confirmation, a burst of a programmed number (e.g., 15) of stimulating pulses is generated. The rates of the bursts increase from cycle to cycle; thus following each tachycardia confirmation, a pulse burst at a different rate is generated. The rate of a burst which is successful in terminating tachycardia is stored, and following the next tachycardia confirmation the stored rate is used for the first burst which is generated. In this manner, there is a greater likelihood that tachycardia will be terminated following the first burst since a previously successful rate is used. Only if success is not achieved does scanning of the burst rate ensue, starting with the previously successful rate.
    Type: Grant
    Filed: July 17, 1981
    Date of Patent: August 16, 1983
    Assignee: Telectronics Pty. Ltd.
    Inventors: Tibor A. Nappholz, Stephen J. Swift
  • Patent number: 4390021
    Abstract: A pacer for controlling tachycardia, in which the coupled interval is scanned as well as the initial delay. The time parameters which are successful in terminating the condition are stored so that upon confirmation of another tachycardia event, the previously successful time parameters are the first ones to be tried. The unit also allows tachycardia to be induced by the physician so that the parameters which are programmable can be adjusted for optimum performance following a subsequent naturally occurring tachycardia confirmation.
    Type: Grant
    Filed: March 19, 1981
    Date of Patent: June 28, 1983
    Assignee: Telectronics Pty. Ltd.
    Inventors: Roworth A. J. Spurrell, Tibor A. Nappholz, Stephen J. Swift