1
Xintao Wang, Jennifer L Hay: Enhanced transcutaneous recharging system for battery powered implantable medical device. Sulzer Intermedics, John R Merkling, December 30, 1997: US05702431 (278 worldwide citation)

An improved transcutaneous energy transmission device is disclosed for charging rechargeable batteries in an implanted medical device and to minimize peak temperature rises in the implanted device. A current with a sinusoidal waveform is applied to a resonant circuit comprising a primary coil and a ...


2
Edward A Schroeppel, Paul R Spehr: Transcutaneous energy coupling using piezoelectric device. Sulzer Intermedics, John R Conley Rose & Tayon Merkling, May 12, 1998: US05749909 (244 worldwide citation)

An energy transmission system for transmitting energy non-invasively from an external unit to an implanted medical device to recharge a battery in the medical device. An alternating magnetic field is generated by the external charging unit and a piezoelectric device in the implanted medical device v ...


3
Ashok P Nedungadi, Xintao Wang: Data communication system for control of transcutaneous energy transmission to an implantable medical device. Sulzer Intermedics, John R Merkling, February 3, 1998: US05713939 (228 worldwide citation)

A data communication system for control of transcutaneous energy transmission to an implantable medical device is disclosed having an implantable medical device with rechargeable batteries and a single coil that is employed both for energy transmission and data telemetry. Control circuitry in the im ...


4
Xintao Wang, Mohammed Zafar Amin Munshi: Transcutaneous energy transmission circuit for implantable medical device. Sulzer Intermedics, Michael F Heim, Conley Rose & Tayon P C, November 25, 1997: US05690693 (199 worldwide citation)

An improved transcutaneous energy transmission device is disclosed for charging rechargeable batteries in an implanted medical device. A current with a sinusoidal waveform is applied to a resonant circuit comprising a primary coil and a capacitor. Current is induced in a secondary coil attached to t ...


5
Edward A Schroeppel, David Prutchi, Andre G Routh: Implantable medical device responsive to heart rate variability analysis. Sulzer Intermedics, John R Merkling, May 12, 1998: US05749900 (194 worldwide citation)

A method and apparatus for evaluating heart rate variability of the heart of a person in order to forecast a cardiac event. A cardiac stimulator receives heart beat signals from the heart and determines a measurement of heart rate variability based on statistical data derived from the heart beat sig ...


6
Lawrence J Stotts, Edward A Schroeppel: Rate responsive cardiac pacemaker with peak impedance detection for rate control. Sulzer Intermedics, John R Merkling, July 21, 1998: US05782884 (172 worldwide citation)

An implantable, rate responsive pacemaker, sensitive to impedance changes in the heart, wherein the cardiac pacing rate and maximum cardiac pacing rate, or either of them, are adjusted as a function of an interval between either the administration of a pacing pulse or the detection of the R-wave and ...


7
Matthew M Johnston, Don C Deno, Alex Zinner: Electromagnetic acceleration transducer for implantable medical device. Sulzer Intermedics, Schwegman Lundberg Woessner & Kluth P A, August 24, 1999: US05941904 (155 worldwide citation)

An electromagnetic accelerometer includes a rigid shell with a cavity in which two magnets are fixed at either and of the rigid shell and one magnet is allowed to move between the fixed magnets. The three magnets are arranged so that the movable magnet is suspended between the fixed magnets by magne ...


8
Edward A Schroeppel: Universal programmable cardiac stimulation device. Sulzer Intermedics, John R Conley Rose & Tayon Merkling, August 11, 1998: US05792203 (155 worldwide citation)

An implantable medical device, such as a pacemaker, for electrically stimulating the heart to beat includes two or more node logic units connected by communication paths over which signals between nodes are conducted. Each node can provide pacing energy to an electrode and amplify electrical signals ...


9
Eckhard Alt: Cardiac stimulator and defibrillator with means for identifying cardiac rhythm disorder and chamber of origin. Sulzer Intermedics, Blank Rome Comisky & McCauley, June 13, 2000: US06076014 (146 worldwide citation)

A medical interventional device is structured for implantation in a human patient, to respond to detection of cardiac activity of the patient indicative of cardiac dysrhythmias. The device includes a cardiac therapy system responsive to a detected arrhythmia in either the atrial or ventricular chamb ...


10
Yves Verboven Nelissen: Dual chamber pacing with interchamber delay. Sulzer Intermedics, John R Merkling, February 24, 1998: US05720768 (144 worldwide citation)

A method and apparatus for determining the origin of a cardiac signal in the heart of a patient. A cardiac stimulator includes a multiple-chamber electrode arrangement having at least two electrodes positioned to sense and/or pace different chambers of the heart. The electrodes switch from a bipolar ...