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| Number | Title | Issue Date |
| 6292698 | World wide patient location and data telemetry system for implantable medical devices A system for communicating with a medical device implanted in an ambulatory patient and for locating the patient in order to selectively monitor device function, alter device operating parameters and modes and provide emergency assistance to and communica... | 09/18/2001 |
| 6236882 | Noise rejection for monitoring ECG's An implantable medical device which preferably has a segmented looping memory for storing triggered physiologic events also has autotriggers to record the ECGs and any other relevant physiologic signals occurring during triggering events. The problem is t... | 05/22/2001 |
| 6234973 | Implantable medical device for sensing absolute blood pressure and barometric pressure An implantable barometric pressure sensor coupled with an implantable medical device (IMD) provides a barometric pressure related, reference pressure value for use in combination with an absolute pressure value measured by an implantable absolute pressure... | 05/22/2001 |
| 6236889 | Method and apparatus for accoustically coupling implantable medical device telemetry data to a telephonic connection An apparatus and method for communicating acoustic telemetry data produced by an implantable medical device over a communication channel includes a signal generator, a modulator, and an acoustic transmitter each provided in the implantable medical device.... | 05/22/2001 |
| 6221024 | Implantable pressure sensor and method of fabrication A body implantable pressure sensor attached to an endocardial lead for implantation in a heart chamber or cardiac blood vessel for sensing blood pressure and providing blood pressure signals to an implanted or external hemodynamic monitor and/or therapy d... | 04/24/2001 |
| 6208900 | Method and apparatus for rate-responsive cardiac pacing using header mounted pressure wave transducer In a pacemaker, a method and apparatus for providing rate response in proportion to the patient's metabolic demand for cardiac output as determined in response to the patient's breathing rate or respiratory minute ventilation or contraction strength, opti... | 03/27/2001 |
| 6201993 | Medical device telemetry receiver having improved noise discrimination A method and apparatus for detecting an RF signal transmitted between an implantable medical device (IMD) and an external medical device programmer in a telemetry session and discriminating the telemetry transmitted RF signal from transient and steady sta... | 03/13/2001 |
| 6190324 | Implantable medical device for tracking patient cardiac status An implantable medical device determines activity levels and Heart Rate and from a combination of these produces a value for a heart rate activity coefficient (HRAC). This value has significant diagnostic and patient tracking value. Methods and apparatus ... | 02/20/2001 |
| 6178349 | Drug delivery neural stimulation device for treatment of cardiovascular disorders An implantable medical device for treatment of cardiovascular disorders by stimulating a selective nerve, the device including an implantable pulse generator, an implantable electrode body and a reservoir. The electrode body includes an electrode electric... | 01/23/2001 |
| 6171252 | Pressure sensor with increased sensitivity for use with an implantable medical device An apparatus and method for obtaining pressure data using a body implantable pressure sensor includes a measurement capacitor which is responsive to pressure changes of a body fluid. Non-constant, multiple current source charging of the measurement capaci... | 01/09/2001 |
| 6162180 | Non-invasive cardiac monitoring system and method with communications interface A system and method for determining a patient's cardiac output in a non-invasive manner and transmitting cardiac output data to a remote host processor, a communications system, or a local output device is disclosed. A non-invasive cardiac monitoring appr... | 12/19/2000 |
| 6155267 | Implantable medical device monitoring method and system regarding same An implantable medical device monitoring method and system monitors chronic data representative of at least one physiological parameter. The chronic data is monitored to detect changes in state of the at least one physiological parameter. Data associated ... | 12/05/2000 |
| 6154675 | Resetting ERI/POR/PIR/indicators in implantable medical devices An automatic, body-implantable medical device having at least two modes of operation is disclosed. The device is provided with circuitry for automatically detecting when the device has been implanted in a patient, so that the device can automatically swit... | 11/28/2000 |
| 6152885 | Barometric pressure sensor for use with implantable absolute pressure sensor A barometric pressure sensor for deriving reference pressure data for use in combination with absolute pressure data derived by an implantable medical device (IMD) is disclosed. The barometric pressure sensor is located in a sensing module adapted to be l... | 11/28/2000 |
| 6128526 | Method for ischemia detection and apparatus for using same In determining whether a patient has ischemia or other conditions discernible in the variation occurring in the ST portion of the electrocardiogram signal, we filter out bad ST change parameters that are not changing at a rate representative of human isch... | 10/03/2000 |
| 6115628 | Method and apparatus for filtering electrocardiogram (ECG) signals to remove bad cycle information and for use of physiologic signals determined from said filtered ECG signals In using electrogram signals to determine physiologic conditions like ischemia, the bad cardiac cycle information due to noise, axis shifts in the cardiac electrical axis, and the like must be removed if the electrogram signal can be made to be a good ind... | 09/05/2000 |
| 6102874 | Implantable medical device for tracking patient functional status An implantable medical device determines activity levels over a set of time periods, preferably on the order of seconds, minutes and hours and a display is enabled for days or weeks at recorded activity levels over a range of dates. This enables physician... | 08/15/2000 |
| 5899927 | Detection of pressure waves transmitted through catheter/lead body In an implanted medical device, a method and apparatus for detecting pressure waves caused by movement of a body organ, muscle group, limb or the like and transmitted through a catheter or lead body to the implanted medical device employing a pressure wav... | 05/04/1999 |
| 5871508 | Apparatus for cardiac pacing in transplant Pacemaker designed for support of both orthotopic and heterotopic transplants has three lead bore connector block assembly and dedicated or dedictable amplifiers for pacing and sensing configurations unique to transplant situations. The provision of defin... | 02/16/1999 |
| 5725562 | Rate responsive cardiac pacemaker and method for discriminating stair climbing from other activities A method of and apparatus for pacing a patient's heart at a pacing rate dependent on patient activity and posture particularly during stair climbing. A dual chamber, rate responsive pacemaker for pacing a patient's heart includes at least one DC accelerom... | 03/10/1998 |
| 5658320 | Atrial tachyarrhythmia detection in implantable pulse generators Because a determination of atrial tachycardia can occur too often where the pacemaker maintained true atrial interval value is designed to converge on the shortest A-A intervals, a method and apparatus either extends PVAB to cover inappropriate atrial sen... | 08/19/1997 |
| 5643326 | Dual chamber pacing with atrial and ventricular independence A rate-responsive cardiac pacemaker implements a novel pacing mode, identified as ADIR/VVIR, which is especially effective for patients with Sick Sinus Syndrome and only intermittent atrioventricular block. Within the same pacemaker circuitry, an AAIR pac... | 07/01/1997 |
| 5626623 | Method and apparatus for optimizing pacemaker AV delay In a dual chamber cardiac pacemaker, a method and apparatus for determining an atrioventricular (AV) delay interval to maintain optimal left heart AV mechanical synchrony and function. When the intrinsic or paced atrial heart rate is stable, test AV delay... | 05/06/1997 |
| 5626620 | Dual chamber pacing system and method with continual adjustment of the AV escape interval so as to maintain optimized ventricular pacing for treating cardiomyopathy A dual chamber pacemaker is provided having capability for adjusting the AV escape interval so as to optimize the timing of delivered ventricular pace pulses for therapy of patients with cardiomyopathy. The pacemaker system continually monitors to determi... | 05/06/1997 |
| 5601615 | Atrial and ventricular capture detection and threshold-seeking pacemaker Capture detection and stimulation threshold-measurement methods and apparatus for deriving atrial and ventricular pace pulse (A-pace and V-pace) stimulation energy strength-duration data. In a first atrial and ventricular threshold test regimen for use wi... | 02/11/1997 |
| 5562711 | Method and apparatus for rate-responsive cardiac pacing A body-implantable rate-responsive cardiac pacemaker is provided with circuitry for sensing a plurality of physiologic parameters known to be indicative of a patient's metabolic demand for increased cardiac output. In one embodiment, a rate-responsive pac... | 10/08/1996 |
| 5535752 | Implantable capacitive absolute pressure and temperature monitor system A capacitive pressure and temperature sensing system for providing signals representative of the magnitude of body fluid absolute pressure at a selected site and ambient operating conditions, including body temperature, at the site. An implantable lead ha... | 07/16/1996 |
| 5534018 | Automatic lead recognition for implantable medical device A method and apparatus for determining the availability of unipolar and/or bipolar pacing/sensing paths in a body-implantable cardiac pacing system. In one embodiment, a pacemaker system includes impedance monitoring circuitry for periodically measuring i... | 07/09/1996 |
| 5527347 | Dual chamber pacing system and method with automatic adjustment of the AV escape interval for treating cardiomyopathy There is provided a dual chamber pacemaker system and method for ventricular pacing to provide therapy for a patient with cardiomyopathy, this system being characterized by automatically adjusting the AV escape interval so that ventricular pace pulses are... | 06/18/1996 |
| 5522859 | Sinus preference method and apparatus for cardiac pacemakers A dual chamber, rate-responsive pacemaker for pacing a patient's heart novelly allows tracking of the patient's sinus rate when the sinus rate is slightly less than the sensor rate; i.e., within a predetermined "Sinus Preference Window Maximum Rate Drop."... | 06/04/1996 |
| 5501701 | Pacemaker with vasovagal syncope detection and therapy A method and apparatus for cardiac pacing, in which pacing pulses are provided at an increased rate in response to a detected rapid drop in heart rate. A rapid drop is detected in response to heart rate falling from a persistent rate above a first thresho... | 03/26/1996 |
| 5480414 | Method and apparatus for controlling pacemaker during automatic capture detection A cardiac pacemaker improves battery longevity by automatically providing optimized threshold amplitude and pulse width values. During capture verification and threshold searching, the pacemaker delivers a pacing pulse and a rapid, maximum amplitude backu... | 01/02/1996 |
| 5470345 | Implantable medical device with multi-layered ceramic enclosure An implantable medical device has a novel ceramic enclosure with joinable multi-layered clamshells. In the preferred embodiment one half of the enclosure carries the hybrid circuitry and feedthroughs of, for example, a pacemaker, while, the other half car... | 11/28/1995 |
| 5433734 | Tool-less threaded connector assembly A lead connection suitable for use in connecting a flexible coiled lead to an implantable device. The implantable device is provided with a threaded projection having an outer diameter sized with respect to the inner diameter of the lead's conductor coil ... | 07/18/1995 |
