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"What, sir, would you make a ship sail against the wind and currents by lighting a bonfire under her deck? I pray you, excuse me, I have not the time to listen to such nonsense."
Napoleon Bonaparte ; When told of the Robert Fulton steamboat
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| Number | Title | Issue Date |
| 5748439 | Capacitors having high strength electrolytic capacitor separators Crosslinked elastomeric electrolytes and compatible separator materials are provided for use in electrical energy storage devices such as aluminum electrolytic capacitors and batteries. The separator material is impregnated with the electrolyte, and as a ... | 05/05/1998 |
| 5660183 | Interactive probability based expert system for diagnosis of pacemaker related cardiac problems A diagnostic device for providing a prognosis of patient with an implanted cardiac device includes a data bank for storing statistical data relating various symptoms characterizing cardiac problems and associated complications. The device further includes... | 08/26/1997 |
| 5632716 | Apparatus and method of muscle training in dynamic cardiomyoplasty A pacemaker or similar cardiac and cardiomyoplasty muscle stimulator is provided which during a training period of said muscle, defining alternating training and augmentation phases. During training phases training pulses are provided for the muscle until... | 05/27/1997 |
| 5626622 | Dual sensor rate responsive pacemaker An electronic pacemaker generating pacing signals includes both a metabolic rate responsive sensor monitoring a physiological parameter and an activity rate responsive sensor monitoring movement of a patient's body during exercise. The measurements from e... | 05/06/1997 |
| 5609610 | Dual chamber pacemaker with automatic adaptation for intrinsic atrial events In an implanted pacemaker three basic pacing intervals are established: an A-V delay, a PVARP and an alert interval. These three intervals together define an atrial-to atrial interval which is preferably a function of a metabolic indicated rate. The PVARP... | 03/11/1997 |
| 5591215 | Apparatus and method for detection of atrial fibrillation by ventricular stability and ventricular pacing A cardiac implant device is provided in which the ventricular rate is monitored to differentiate between atrial fibrillation and ventricular tachycardia or other cardiac conditions. For this purpose, the ventricular rate stability is monitored by, for exa... | 01/07/1997 |
| 5591214 | Pacemaker with automatic blanking period function The blanking periods for an implantable cardiac device, such as a pacemaker, is determined by providing an excitation in a cardiac chamber and monitoring the corresponding cardiac activity. For in-channel blanking periods, the response from the same chamb... | 01/07/1997 |
| 5554176 | Implantable electrode and sensor lead apparatus A transvenous cardioversion lead system capable of delivering electrical energy to cardiac tissue is provided. Lead system comprises an inner conductor surrounded by an insulative layer which, in turn, is surrounded by a second conductor mounted coaxially... | 09/10/1996 |
| 5542430 | Apparatus and method for discriminating between cardiac rhythms on the basis of their morphology using a neural network An apparatus and a method are provided for coupling to a patient's heart for discriminating between tachycardias of physiological origin, and those of pathological origin having similar rates; and also for discriminating amongst those of pathological orig... | 08/06/1996 |
| 5500004 | Cardio myostimulation system with defibrillation A pacemaker system for a heart having an external muscle is used to control pacing of the heart during normal or even arrhythmic modes. In these modes, the muscle is stimulated synchronously with the heart to augment the heart's cardiac functions. When th... | 03/19/1996 |
| 5496350 | Apparatus and method for detecting, confirming and terminating pacemaker mediated tachycardia A pacemaker for automatically confirming the presence of, and terminating, pacemaker mediated tachycardia (PMT). A number of V-pace to A-sense intervals are measured. If the measured intervals are consistent, it is possible that there is retrograde conduc... | 03/05/1996 |
| 5492128 | Intracardiac electrogram sensing in an arrhythmia control system An implantable cardioverter/defibrillator device having an improved sensing system for automatically and rapidly adjusting to changing amplitudes of intracardiac electrogram "ICEG" signals during transitions between normal sinus rhythm and ventricular tac... | 02/20/1996 |
| 5488410 | System and method for disk software publishers to control disk distribution A system for allowing software publishers to control which video standard(s) can be recovered from an optical disk containing video source material. The disk may be digitally encoded so that any of NTSC, PAL and other video signal standards can be generat... | 01/30/1996 |
| 5487753 | Rate-responsive pacemaker with anaerobic threshold adaptation and method A rate responsive pacemaker measures a metabolic demand parameter of a patient. The metabolic demand parameter is converted to a corresponding metabolic indicated rate which determines the pulse rate of the pacer. The converting is based on a profile depe... | 01/30/1996 |
| 5480413 | Apparatus and method for stabilizing the ventricular rate of a heart during atrial fibrillation A pacemaker is provided in which ventricular rate instability is detected and automatically corrected by gradually increasing the ventricular pacing rate. Once the ventricle is stabilized, its pacing rate is gradually decreased as much as possible without... | 01/02/1996 |
| 5476482 | Pacemaker programmer-based automatic retrograde conduction measurement A method for automatically determining the existence of retrograde conduction in a pacemaker patient. At a selected ventricular pacing rate, A-senses are detected, and V-pace to A-sense intervals are measured. If the measured intervals are consistent, it ... | 12/19/1995 |
| 5476486 | Automatic atrial pacing pulse threshold determination utilizing an external programmer and a V-sense electrode A clinical programming system is disclosed for use with an implanted cardiac pacemaker to automatically determine the minimum pacing energy which is necessary to evoke an atrial depolarization. The system utilizes a series of pacing pulses of progressivel... | 12/19/1995 |
| 5458623 | Automatic atrial pacing threshold determination utilizing an external programmer and a surface electrogram A clinical programming system for use with an implanted cardiac pacemaker to automatically determine the minimum pacing energy which is necessary to evoke an atrial depolarization. The system utilizes a series of pacing pulses of progressively decreasing ... | 10/17/1995 |
| 5441523 | Forced atrioventricular synchrony dual chamber pacemaker A dual chamber cardiac pacemaker is adapted to operate in a forced synchrony pacing mode. The pacemaker senses atrial heartbeats and determines whether the rate of sensed atrial heartbeats is pathological or physiological. For physiological atrial heartbe... | 08/15/1995 |
| 5431692 | Method and apparatus for testing compatibility of lead polarity and polarity programming of a cardiac stimulator A cardiac stimulation device includes a system for testing lead polarity and determining whether the programmed polarity configuration is compatible with an attached pacing and sensing lead. The lead polarity test is based on a measurement of lead impedan... | 07/11/1995 |
| 5423868 | Dual chamber pacemaker which detects, confirms and terminates pacemaker mediated tachycardia A dual-chamber pacemaker for confirming pacemaker mediated tachycardia (PMT) after initial detection. The minimum V-V pacing interval is extended to be slightly longer than the interval of the sensed atrial rate. If the A-V Delay intervals in successive c... | 06/13/1995 |
| 5404877 | Leadless implantable sensor assembly and a cardiac emergency warning alarm A leadless implantable cardiac arrhythmia alarm is disclosed which continuously assesses a patient's heart function to discriminate between normal and abnormal heart functioning and, upon detecting an abnormal condition, generates a patient-warning signal... | 04/11/1995 |
| 5400795 | Method of classifying heart rhythms by analyzing several morphology defining metrics derived for a patient's QRS complex A method, useable in implantable cardioverter defibrillators, for classifying heart rhythms of a patient by means of electrogram morphology. A number of features (metrics) of the electrogram are measured to form a description of the shape of individual el... | 03/28/1995 |
| 5395393 | Intracardiac electrogram sensing in an arrhythmia control system An implantable cardioverter/defibrillator device having an improved sensing system for automatically and rapidly adjusting to changing amplitudes of intracardiac electrogram "ICEG" signals during transitions between normal sinus rhythm and ventricular tac... | 03/07/1995 |
| 5391192 | Automatic ventricular pacing pulse threshold determination utilizing an external programmer and a surface electrocardiogram A clinical programming system is disclosed for use with an implanted cardiac pacemaker to automatically determine the minimum pacing energy which is necessary to evoke a ventricular depolarization. The system utilizes a series of pacing pulses of progress... | 02/21/1995 |
| 5379776 | Heart rhythm classification method, and implantable dual chamber cardioverter/defibrillator employing the same An implantable dual chamber ICD and method senses atrial (A-A) and ventricular (V-V) intervals, calculates the ratio (A/V interval ratio) of A-A intervals to V-V intervals, classifies heart rhythms with V-V intervals (i) above a revert rate threshold as n... | 01/10/1995 |
| 5376108 | Electrode lead anchoring apparatus and method employing dual suture collars An implantable lead fixation apparatus, including two suture collars connected by a flexible retaining member of predetermined length, is provided for anchoring an elongate cylindrical electrode lead to a patient's body. Each suture collar comprises a fle... | 12/27/1994 |
| 5370125 | Apparatus and method for discriminating between associated and dissociated cardiac rhythms An apparatus and a method for discriminating between tachycardias of physiological origin, and those of pathological origin having similar atrial and ventricular rates, are disclosed. The apparatus includes two sensing electrodes for registering the elect... | 12/06/1994 |
| 5365932 | Cardiac signal sensing device having sensitivity automatically controlled in response to metabolic demand A pacemaker automatically adjusts sensitivity as a function of metabolic demand. The amplitude of cardiac signals is naturally reduced during exercise. The pacemaker measures a physiological parameter to determine the patient's metabolic demand. In respon... | 11/22/1994 |
| 5361776 | Time domain reflectometer impedance sensor method of use and implantable cardiac stimulator using same A time domain reflectometry (TDR) impedance sensor is provided for measuring body impedance along a lead or catheter implanted in a patient's cardiovascular system. The TDR sensor applies an electrical stimulus to the lead and measures reflections echoed ... | 11/08/1994 |
| 5350407 | Implantable stimulator having quiescent and active modes of operation A method and apparatus for selectively controlling an oscillator-driven implantable stimulator to operate either in a quiescent state, in response to a command from an external communicating device, or in an active state in response either to removal of a... | 09/27/1994 |
| 5336246 | Lead connector assembly for medical device and method of assembly An implantable electrical device, including a sealed case and a connector assembly, and a method for making the same are disclosed. The sealed case has electrical circuitry therein and has at least one insulated electrical-feed-through coupled to the circ... | 08/09/1994 |
| 5330504 | Cardioverting defibrillating device with off-line ECG analysis An improved implantable pacemaker/defibrillator device in which a first and relatively simplistic technique is employed to detect an abnormal heart rhythm and a second more precise algorithm is utilized for the more difficult problem of confirming the arr... | 07/19/1994 |
| 5330520 | Implantable electrode and sensor lead apparatus A transvenous cardioversion lead system capable of delivering electrical energy to cardiac tissue is provided. Lead system comprises an inner conductor surrounded by an insulative layer which, in turn, is surrounded by a second conductor mounted coaxially... | 07/19/1994 |
| 5327900 | Apparatus and method for discriminating between heart rhythms with similar atrial and ventricular rates An apparatus and a method for discriminating between tachycardias of physiological origin, and those of pathological origin having similar atrial and ventricular rates, are disclosed. The apparatus includes two sensing electrodes for registering the elect... | 07/12/1994 |
| 5326448 | Method for reducing the polarization of bioelectrical stimulation leads using surface enhancement, and product made thereby A method is disclosed for greatly reducing pacing polarization of a porous platinum bioelectrical stimulation electrode substrate by applying an oscillating current to the electrode substrate while it is immersed in an electrolyte such as a sodium sulfate... | 07/05/1994 |
| 5324326 | Pressure sensing pacing lead An elongate endocardial lead is disclosed which includes at least one distal electrode for sensing electrical activity in, and delivering electrical pacing pulses to, a patient's malfunctioning heart, a plurality of proximal terminal pins for coupling the... | 06/28/1994 |
| 5324323 | Multiple channel cardiosynchronous myoplasty apparatus A neuromuscular stimulation apparatus and procedure, which employs multiple channels of stimulation for the purpose of supplying directional control of blood flow in addition to augmenting the force of contraction. The apparatus comprises multiple channel... | 06/28/1994 |
| 5300108 | Active fixation lead with a dual-pitch, free spinning compound screw An active fixation lead assembly including a dual-pitch screw mechanism and a free spinning mechanism, which provides an improved capability for firmly engaging a lead tip upon heart tissue while avoiding damage to the tissue due to overtorquing of the le... | 04/05/1994 |
| 5300093 | Apparatus and method for measuring, formatting and transmitting combined intracardiac impedance data and electrograms A patient-implantable cardiac stimulation apparatus adapted to measure body impedance, derive at least one physiological parameter from the impedance measurement, sample a time sequence of the physiological parameter and transmit the sequence to an extern... | 04/05/1994 |
