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| Number | Title | Issue Date |
| 6112118 | Implantable cardioverter defibrillator with slew rate limiting The present invention is a pectorally implantable defibrillation system for delivering at least one electrical cardioversion/defibrillation countershock. The system has a housing designed to be implanted in a human patient, wherein the housing has an oute... | 08/29/2000 |
| 6093982 | High voltage output array switching system A high voltage array switching system utilizes an array of low voltage charge storage devices to generate a relatively high energy, high voltage output required by battery powered devices such as implantable cardioverter defibrillators. The system include... | 07/25/2000 |
| 6058332 | System for anchoring mid-lead electrode on an endocardial catheter lead A system for passively anchoring mid-lead electrodes on an endocardial catheter lead includes at least one fibrosis-anchoring opening positioned along the exterior surface of the catheter lead body proximal or distal to the mid-lead electrodes for passive... | 05/02/2000 |
| 6032322 | Silicone painting tip for paint brush A silicone paint brush artist's tool includes a handle and a novel painting tip. The painting tip is made of a resilient silicone. In one embodiment, the painting tip has a series of longitudinal slits defined in the tip. In another embodiment, the painti... | 03/07/2000 |
| 6017338 | Fluid cooled and perfused tip for a catheter The invention relates to an ablation catheter which controls the temperature and reduces the coagulation of biological fluids on a tip of a catheter, prevents the impedance rise of tissue in contact with the catheter tip, and maximizes the potential energ... | 01/25/2000 |
| 5994880 | Giant magnetroresistive ratio sensing system A magnetic sensing circuit is arranged in cooperative relation to a flyback transformer in a capacitor charging circuit for directly sensing the state of the transformer magnetic field for controlling the switching of power to the primary winding of the f... | 11/30/1999 |
| 5957956 | Implantable cardioverter defibrillator having a smaller mass A capacitor-discharge implantable cardioverter defibrillator (ICD) has a relatively smaller mass of less than about 120 grams. The smaller mass of the ICD is achieved by selecting and arranging the internal components of the ICD to deliver a maximum defib... | 09/28/1999 |
| 5919213 | Defibrillation test system using actual ICD housing electrode An intraoperative defibrillation test system for establishing defibrillation thresholds for an implantable cardioverter defibrillator (ICD) uses the actual ICD housing electrode, rather than a test housing electrode, as part of the test system. The intrao... | 07/06/1999 |
| 5919211 | ICD power source using multiple single use batteries An implantable cardioverter defibrillator optimized for prophylactic use. An improved power system uses multiple, single use, short duration, battery cells for countershocks.... | 07/06/1999 |
| 5913877 | Implantable defibrillator system for generating a biphasic waveform with enhanced phase transition A method and apparatus for generating biphasic waveforms uses an implantable cardioverter defibrillator (ICD) system having a phase transition enhancing capacitor system in addition to the capacitor system(s) which deliver the first and second phase of th... | 06/22/1999 |
| 5913878 | Tiered therapy cardiac detection system having a global counter A tiered therapy cardiac detection system is provided for a medical device that senses cardiac signals representative of beat-to-beat intervals and delivers at least one therapy in response to a detected cardiac dysrhythmia corresponding to one of a plura... | 06/22/1999 |
| 5904705 | Automatic battery-maintaining implantable cardioverter defibrillator and method for use A device and method for performing automatic battery maintenance as particularly applied in an implantable cardioverter defibrillator (ICD). The battery is maintained at a predetermined state-of-charge to enable charging a capacitor in the ICD to discharg... | 05/18/1999 |
| 5899923 | Automatic capacitor maintenance system for an implantable cardioverter defibrillator An automatic capacitor maintenance system for an implantable cardioverter defibrillator (ICD) reforms the capacitor system of the ICD based on measurements relating a current leakage and a charge time of the capacitor system as determined at a stable low ... | 05/04/1999 |
| 5871505 | Apparatus for generating biphasic waveforms in an implantable defibrillator A method and apparatus for generating biphasic waveforms for an implantable defibrillator uses two disparate capacitor systems. A first phase of the biphasic waveform is generated from the charge stored in a first capacitor system, and a second phase of l... | 02/16/1999 |
| 5861006 | System for selectively reforming an ICD An implantable cardioverter defibrillator (ICD) in which capacitor systems are automatically reformed using a software-implemented computer system. The charge history and performance of the capacitor system are measured to perform intelligent calculations... | 01/19/1999 |
| 5833712 | Implantable defibrillator system for generating a biphasic waveform A method and apparatus for generating biphasic waveforms uses an implantable cardioverter defibrillator having two capacitor systems and a switching network. A first phase of the biphasic waveform is produced by configuring the two capacitor systems to se... | 11/10/1998 |
| 5792187 | Neuro-stimulation to control pain during cardioversion defibrillation A system and method for reducing the perceived pain by a patient occurring during cardioversion/defibrillation countershocks to the heart. The system comprises an electrode subsystem for positioning at least one electrode in contact with a patient, a pain... | 08/11/1998 |
| 5782898 | System for anchoring mid-lead electrode on an endocardial catheter lead A system for passively anchoring mid-lead electrodes on an endocardial catheter lead includes at least one fibrosis-anchoring opening positioned along the exterior surface of the catheter lead body proximal or distal to the mid-lead electrodes for passive... | 07/21/1998 |
| 5782993 | Photovoltaic cells having micro-embossed optical enhancing structures A photovoltaic device has micro-embossed optical enhancing structures formed on an inner surface of a transparent polymer film material which is laminated to the light incident surface of a photovoltaic cell. Preferably, the micro-embossed structures are ... | 07/21/1998 |
| 5766226 | Switched discharge pathways for ICD having multiple output capacitors A high voltage output system for use with an implantable cardioverter defibrillator (ICD) system provides for switched discharge pathways utilized to achieve a windshield wiper-like output. The high voltage output system includes at least two output capac... | 06/16/1998 |
| 5749910 | Shield for implantable cardioverter defibrillator An implantable cardioverter defibrillator capable of subcutaneous positioning within a patient delivers at least one electrical cardioversion/defibrillation countershocks to the heart of the patient. The implantable cardioverter defibrillator includes a h... | 05/12/1998 |
| 5735878 | Implantable defibrillator having multiple pathways An implantable defibrillator derives a rectangular current waveform from a capacitor discharge by using a current limiter. This pulse-shaping method is equally applicable to single-path and multiple-path situations. A rectangular pulse delivers a maximum ... | 04/07/1998 |
| 5733309 | Method and apparatus for capacitive switching output for implantable cardioverter defibrillator An implantable cardioverter defibrillator includes a battery system and a transformer for selectively charging the capacitor system in response to a cardiac dysrhythmia detected by a sensing system. The system also includes a switching control system for ... | 03/31/1998 |
| 5718718 | Method and apparatus for polarity reversal of consecutive defibrillation countershocks having back biasing precharge pulses A method and apparatus for controlling an implantable cardioverter defibrillator utilizes a back-biasing precharge circuit to precondition the heart before delivery of a biphasic electrical countershock. The back-biasing precharge circuit delivers a low v... | 02/17/1998 |
| 5713944 | Cardioversion-defibrillation catheter lead having selectively exposable outer conductors A cardioversion/defibrillation catheter lead has selectively exposable outer conductors that increase the effective electrode area and that can be used to direct electrical countershock vectors delivered by the catheter lead. The lead includes an elongate... | 02/03/1998 |
| 5709215 | R-wave detection method for implantable cardioverter defibrillators An ICD detection method for sensing the occurrence of an R-wave improves the ability to distinguish R-waves from noise through the use of variable declining sensitivity thresholds. The method includes the consideration of the amplitude of at least the pre... | 01/20/1998 |
| 5709709 | ICD with rate-responsive pacing An implantable cardioverter defibrillator (ICD) system features rate-responsive pacing capabilities. An electrical pulse generating device having a housing containing pulse generating circuitry is provided. A conductive lead connectable to the housing tha... | 01/20/1998 |
| 5697953 | Implantable cardioverter defibrillator having a smaller displacement volume A capacitor-discharge implantable cardioverter defibrillator (ICD) has a relatively longer device life of greater that 5 years. The longer life of the ICD is achieved by selecting and arranging the internal components of the ICD to deliver a maximum defib... | 12/16/1997 |
| 5662696 | One piece disposable threshold test can electrode for use with an implantable cardioverter defibrillator system The present invention is a one piece, disposable pulse generator emulator for emulating a subcutaneous implantable cardioverter defibrillator (ICD) having an active housing electrode. The emulator of the present invention is for use with an external test ... | 09/02/1997 |
