Mohssen A Fard

7274959, Sep 25, 2007

Jun 24, 2003

10/603429

Zifei Wang - Thousand Oaks CA, US
Mohssen Fard - Woodland Hills CA, US
Jeffery D. Snell - Chatsworth CA, US

Pacesetter, Inc. - Sylmar CA

A61B 5/0452

600509, 600517

A technique is provided for detecting episodes of cardiac ischemia based on an examination of post-T-wave signal segments. Since cardiac ischemia is often a precursor to acute myocardial infarction (AMI) or ventricular fibrillation (VF), the technique thereby provides a method for predicting the possible onset of AMI or VF so that a warning may be delivered to the patient. The warning preferably includes both a perceptible electrical notification signal applied directly to subcutaneous tissue and a warning signal delivered via short range telemetry to a handheld warning device external to the patient. In one example, the onset of cardiac ischemia is identified by detecting a sharp falling edge within post-T-wave signals by filtering the signals using a high-pass filter having a cutoff frequency of at least 1 Hz. The total amount of energy in the filtered signal is calculated and compared against various thresholds.

7756572, Jul 13, 2010

Apr 25, 2007

11/740175

Mohssen Fard - Woodland Hills CA, US
Xiaoyi Min - Thousand Oaks CA, US
Peter Boileau - Valencia CA, US
Jong Gill - Valencia CA, US
Bing Zhu - Sunnyvale CA, US
Jay Snell - Studio City CA, US
Laleh Jalali - Moorpark CA, US
Josh Reiss - Kirkland WA, US
Gene Bornzin - Simi Valley CA, US

Pacesetter, Inc. - Sylmar CA

A61B 5/0468

600517, 600516

Techniques are described for efficiently detecting and distinguishing among cardiac ischemia, hypoglycemia or hyperglycemia based on intracardiac electrogram (IEGM) signals. In one example, a preliminary indication of an episode of cardiac ischemia is detected based on shifts in ST segment elevation within the IEGM. In response, the implanted device then records additional IEGM data for transmission to an external system. The external system analyzes the additional IEGM data to confirm the detection of cardiac ischemia using a more sophisticated analysis procedure exploiting additional detection parameters. In particular, the external system uses detection parameters capable of distinguishing hypoglycemia, hyperglycemia and hyperkalemia from cardiac ischemia, such as QTmax and QTend intervals. Alternatively, the more sophisticated analysis procedure may be performed by the device itself, if it is so equipped. Other examples described herein pertain instead to the detection of atrial fibrillation.

7792572, Sep 7, 2010

May 16, 2005

11/130858

Jong Gill - Valencia CA, US
Peter Boileau - Valencia CA, US
Gene A. Bornzin - Simi Valley CA, US
Joseph J. Florio - La Canada CA, US
Mohssen Fard - Woodland Hills CA, US

Pacesetter, Inc. - Sylmar CA

A61B 5/0452

600509, 600508, 600515, 600516, 128920

An implanted cardiac rhythm management device is disclosed that is operative to detect myocardial ischemia. This is done by evaluating electrogram features to detect an electrocardiographic change; specifically, changes in electrogram segment during the early part of an ST segment. The early part of the ST segment is chosen to avoid the T-wave.

8180439, May 15, 2012

Jul 29, 2010

12/846387

Jong Gill - Valencia CA, US
Peter Boileau - Valencia CA, US
Gene A. Bornzin - Simi Valley CA, US
Joseph J. Florio - Bend OR, US
Mohssen Fard - Woodland Hills CA, US

Pacesetter, Inc. - Sylmar CA

A61B 5/0452

600510, 600509, 600515, 600516, 607 1, 607 9, 607 14, 607115

An implanted cardiac rhythm management device is disclosed that is operative to detect myocardial ischemia. This is done by evaluating electrogram features to detect an electrocardiographic change; specifically, changes in electrogram segment during the early part of an ST segment. The early part of the ST segment is chosen to avoid the T-wave.

6847843, Jan 25, 2005

Jun 6, 2001

09/876755

Elia Arambula Mouchawar - Newhall CA, US
Bonian Dai - Temple City CA, US
Mohssen Fard - Woodland Hills CA, US
Gregory Hauck - Valencia CA, US
Corey L. Brown - Los Angeles CA, US

Pacesetter, Inc. - Sylmar CA

A61N 118

607 27, 607 30

An implantable cardiac stimulation device and associated method capable of delivering non-invasive programmed stimulation for electrophysiological testing in which the onset of the non-invasive programmed stimulation is triggered by a cardiac event, either a detected intrinsic event or a stimulated event, occurring in the heart chamber to be tested. When a non-invasive programmed stimulation command is received by the implanted device, it switches to a routine that allows transition to a non-invasive programmed stimulation from a standard operating mode, during a refractory period. The stimulation device also provides a recovery delay following the last pulse of a non-invasive programmed stimulation sequence. If no intrinsic activity is detected during the recovery delay, a refractory period is started following the expiration of the recovery delay. During this refractory period, a transition from the non-invasive programmed stimulation state machine back to the standard stimulation state machine is accomplished.