| Patent Number |
Title Of Patent |
Date Issued |
| 7450995 |
Implantable cardiac stimulation device including an output circuit that provides arbitrarily sha |
November 11, 2008 |
| An output circuit for use in an implantable cardiac defibrillation provides an output pulse having a waveform of virtually any desired shape. The device includes a sensing circuit that senses cardiac activity. An arrhythmia detector detects fibrillation responsive to the cardiac acti |
| 7231255 |
System and method for reducing pain associated with cardioversion shocks generated by implantabl |
June 12, 2007 |
| Techniques are provided for generating pre-pulse pain inhibition (PPI) pulses and subsequent main cardioversion shocks. The PPI pulses are relatively low-voltage pulses each having a chevron-shaped waveform. The main shocks are relatively high-voltage shocks each having a plateau-sha |
| 7211884 |
Implantable medical device construction using a flexible substrate |
May 1, 2007 |
| A high density electronic circuit for use in an implantable stimulation device that comprises a flexible substrate that has the advantage of integrating "chip-and-wire" microelectronic circuits and flexible interconnections that are adapted to conform to the body compatible housing i |
| 7203547 |
System and method of implementing a prophylactic pacer/defibrillator |
April 10, 2007 |
| The prophylactic pacer/defibrillator is configured to deliver shocking therapy in response to a single episode of ventricular fibrillation, as well as delivering otherwise conventional pacing therapy. By providing "one shot" defibrillation capabilities a patient who is not at signifi |
| 7203546 |
System and method of implementing a prophylactic pacer/defibrillator |
April 10, 2007 |
| The prophylactic pacer/defibrillator is configured to deliver shocking therapy in response to a single episode of ventricular fibrillation, as well as delivering otherwise conventional pacing therapy. By providing "one shot" defibrillation capabilities a patient who is not at signifi |
| 7197360 |
Methods and systems for using an inductor to increase capacitor reformation efficiency in an imp |
March 27, 2007 |
| Methods and systems for increasing capacitor reformation efficiency in an implantable cardiac device (ICD) are presented. In one embodiment, a method and system provide for: (1) fully charging a first capacitor, (2) transferring energy from the first capacitor to an inductor, (3) tra |
| 7194304 |
Implantable cardiac defibrillation assembly including a self-evaluation system and method |
March 20, 2007 |
| An implantable cardiac defibrillation assembly includes at least one implantable lead having a defibrillation electrode adapted for placement in a chamber of the heart. The lead includes a connector. The assembly further includes an implantable defibrillation device having a pulse ge |
| 7158825 |
Implantable cardioverter defibrillator with leakage detection and prevention system |
January 2, 2007 |
| A leakage detection system for use in an implantable cardiac stimulation device, such as an implantable cardioverter defibrillator. The leakage detection system employs one or more switches capable of disconnecting leaky electronic components from the power cell of the stimulation de |
| 7155286 |
System and method for reducing pain associated with cardioversion shocks generated by implantabl |
December 26, 2006 |
| Techniques are provided for generating pre-pulse pain inhibition (PPI) pulses and subsequent main cardioversion shocks. The PPI pulses are relatively low-voltage pulses each having a chevron-shaped waveform. The main shocks are relatively high-voltage shocks each having a plateau-sha |
| 7139604 |
Cardiac stimulation system and method for discriminating sinus from non-sinus events |
November 21, 2006 |
| A cardiac stimulation device and method discriminates sinus events from non-sinus events and provide a uniquely prescribed response upon detection of a specific event. |
| 7065403 |
System and method for measuring lead impedance in an implantable stimulation device employing pu |
June 20, 2006 |
| A leakage detection system for use in an implantable cardiac stimulation device, such as a cardioverter defibrillator. The leakage detection system includes a switch bank and a controller that regulates the switching arrangements of various switches. The leakage detection system caus |
| 6968231 |
High voltage converter for an implantable medical device |
November 22, 2005 |
| A high voltage converter circuit for an implantable cardiac device. The circuit includes a plurality of transistors that are connected in parallel to a battery and the primary winding of a transformer. A switching element is connected to the circuit so as to periodically connect and disc |
| 6954669 |
System and method of generating an optimal three-step defibrillation waveform for use in an impl |
October 11, 2005 |
| Increased myocardial voltage is achieved by configuring a shocking circuit of an ICD to generate a defibrillation pulse waveform having a positive phase with three distinct voltage peaks. The shocking circuit employs three capacitors along with switching circuitry for selectively dis |
| 6937894 |
Method of recharging battery for an implantable medical device |
August 30, 2005 |
| A method of operating an implantable medical device containing a Lithium Silver Vanadium Oxide battery. In response to a detected need for therapy, a current flow is delivered from the battery to a charge storage device. After the battery is at least partly depleted by one or more such |
| 6931278 |
Implantable cardioverter defibrillator having fast action operation |
August 16, 2005 |
| An implantable cardiac rhythm management device has a housing containing rhythm management circuitry. The circuitry includes a battery, a transformer, and a capacitor connected via charging circuitry that operates to transmit current from the battery to charge the capacitor. A number |
| 6862476 |
Implantable cardiac stimulation device having automatic sensitivity control and method |
March 1, 2005 |
| An implantable cardiac stimulation device and method provides reliable sensing of cardiac events to support cardiac pacing or fibrillation detection. The device comprises a sensing circuit that senses the cardiac events in accordance with a plurality of threshold characterizing param |
| 6766193 |
Battery conservation in implantable cardioverter-defibrillators and pacemakers |
July 20, 2004 |
| In an implantable cardioverter-defibrillator and/or pacemaker, each having DDD pacing capabilities, an improved method of operation is described which dramatically increases the longevity of the implanted device by conserving battery power. The method comprises deactivating at least one |
| 6738668 |
Implantable cardiac stimulation device having a capture assurance system which minimizes battery |
May 18, 2004 |
| An improved pacing system and related method for use in an implantable pacemaker or defibrillator are disclosed which operate using a predetermined subset of combinations of possible combinations for pacing stimulus pulse amplitude and pulse width, which subset of combinations are th |
| 6714818 |
System and method of generating an optimal three-step defibrillation waveform for use in an impl |
March 30, 2004 |
| Increased myocardial voltage is achieved by configuring a shocking circuit of an ICD to generate a defibrillation pulse waveform having a positive phase with three distinct voltage peaks. The shocking circuit employs three capacitors along with switching circuitry for selectively dis |
| 6694179 |
Display for and method of displaying electrograms received from an implantable cardiac stimulati |
February 17, 2004 |
| A display displays electrical activity of a heart. A receiver receives an electrical signal representing the electrical activity of a heart. The electrical signal includes event markers identifying occurrences of at least one type of cardiac event represented in the electrical signal. A |
| 6671548 |
Implantable stimulation device and method for discrimination atrial and ventricular arrhythmias |
December 30, 2003 |
| By redistributing the running totals for various preliminary classifications to other preliminary classifications based upon the values of the most recent cardiac events, the present invention biases the running totals (thereby biasing the duration criteria) to help overcome common d |
| 6628986 |
System for predicting defibrillation threshold based on patient data |
September 30, 2003 |
| The implant guiding programmer is configured to automatically determine a defibrillation threshold (DFT) for a particular patient and to further determine an optimal implantation configuration for an implantable cardioverter fibrillator (ICD). In one implementation, to determine the |
| 6553259 |
System and method of performing automatic capture in an implantable cardiac stimulation device |
April 22, 2003 |
| An implantable cardiac stimulation device possessing pacing, cardioversion and defibrillation functions and automatic capture capabilities, for automatically verifying capture during stimulation operations and, as necessary, automatically delivering back-up stimulation pulses when ca |
| 6535762 |
Combination ICD and pacemaker system having integrated distal electrode |
March 18, 2003 |
| The implantable cardiac stimulation system is adapted to transmit both shocking and pacing signals using a single electrode lead. The single biocompatible electrode, located at the distal end of the lead, includes a coil for shocking purposes and is in electrical continuity with an end c |
| 6484056 |
System and method of generating a high efficiency biphasic defibrillation waveform for use in an |
November 19, 2002 |
| In an ICD, a highly efficient biphasic defibrillation pulse is generated by switching at least two charged capacitors from a parallel connection to various combinations of a parallel/series connection or a series connection during the first phase of the defibrillation pulse. Such mid |
| 6445950 |
Implantable cardioverter/defibrillator employing shock delivery timing for preventing induced fi |
September 3, 2002 |
| An implantable cardioverter/defibrillator applies a quantity of electrical energy to a heart to terminate an arrhythmia of the heart. The cardioverter/defibrillator employs therapy delivery timing to avoid delivery of the therapy during vulnerable periods of the heart. The cardiovert |
| 6345200 |
Implant guiding programmer for implantable cardioverter defibrillator |
February 5, 2002 |
| The implant guiding programmer is configured to automatically determine the defibrillation threshold (DFT) for a particular patient and to further determine an optimal implantation configuration for an implantable cardioverter fibrillator (ICD). In one implementation, to determine the |
| 6321115 |
Noise detection system and method for use in an implantable medical device |
November 20, 2001 |
| An implantable cardiac stimulation device includes a system for detecting noise in an electrogram signal. The system for detecting noise generates an event signal when the electrogram signal exceeds a threshold. A timer times a refractory time period responsive to an event signal. During |
