Jasbir Singh Sra

7203538, Apr 10, 2007

Nov 22, 2002

10/302747

Mark Schwartz - Redmond WA, US
Jasbir Sra - Pewaukee WI, US

Cardiac Pacemakers, Inc. - St. Paul MN

A61N 1/39

607 4, 607 5, 607 14

A device and method are presented for prolonging the atrial effective refractory period with pacing therapy. Such refractory period prolongation renders the atrial tissue less susceptible to the onset of atrial fibrillation. A particularly useful application is during the period after application of electrical therapy to the atria. to terminate an episode of atrial fibrillation.

7270669, Sep 18, 2007

Mar 5, 2003

10/379946

Jasbir S. Sra - Pewaukee WI, US

Medtronic, Inc. - Minneapolis MN

A61B 17/94
A61N 1/05

606129, 607131, 600375

A method and apparatus for placing an epicardial lead over a desired, predetermined location on the left ventricle using a minimally invasive approach. A thoracoscope having a handle portion and a probe tube defining a central opening is placed through an incision in the patient generally aligned with the desired position for the pacing lead. An introducer and pacing lead are placed within the central opening of the thoracoscope and moved into contact with the pericardium at the desired lead location. An attachment member of the pacing lead attaches an electrode of the pacing lead to the pericardium. The pacing lead includes a mesh disk surrounding the electrode to aid in long term attachment of the electrode to the heart. Alternatively, the pericardium can be incised such that the lead is placed directly over the epicardial surface of the left ventricle.

7286866, Oct 23, 2007

Mar 15, 2002

10/063064

Darin R. Okerlund - Muskego WI, US
Hui David He - Brookfield WI, US
Jerome Knoplioch - Neuilly sur Seine, FR
Jasbir S. Sra - Pewaukee WI, US
Mark E. Woodford - Waukesha WI, US

GE Medical Systems Global Technology Company, LLC - Waukesha WI
Jasbir S. Sra - Pewaukee WI

A61B 5/00

600407, 600425, 600426, 600427, 600428, 600509, 128920, 128922, 382128, 382131, 382173, 345419, 345420

A method of creating 3D models to be used for cardiac interventional procedure planning. Acquisition data is obtained from a medical imaging system and cardiac image data is created in response to the acquisition data. A 3D model is created in response to the cardiac image data and three anatomical landmarks are identified on the 3D model. The 3D model is sent to an interventional system where the 3D model is in a format that can be imported and registered with the interventional system.

7308297, Dec 11, 2007

Nov 5, 2003

10/605903

Shankara Bonthu Reddy - Windham NH, US
Maggie Mei-Kei Fung - Waukesha WI, US
Jasbir S. Sra - Pewaukee WI, US
Darrin R. Okerlund - Muskego WI, US
Christine Mary Palmer - Plover WI, US

GE Medical Systems Global Technology Company, LLC - Waukesha WI

A61B 5/05

600407, 600425, 378 4

A method for quantifying cardiac desynchrony of the right and left ventricles includes obtaining cardiac acquisition data from a medical imaging system, and determining a movement profile from the cardiac acquisition data. The movement profile is directed toward identifying at least one of a time-based contraction parameter for a region of the left ventricle (LV), and a displacement-based contraction parameter for a region of the LV. The determined movement profile is visually displayed by generating a 3D model therefrom.

7308299, Dec 11, 2007

Oct 22, 2003

10/691314

Marc Anthony Burrell - Glendale WI, US
Shankara B. Reddy - Windham NH, US
Jasbir S. Sra - Pewaukee WI, US
Kishore Chandra Acharya - Brookfield WI, US

General Electric Company - Schenectady NY

A61B 6/00

600428, 600509

A method for acquiring a cardiac image from a patient having a paced heart rhythm, an abnormal EKG, or an irregular heartbeat, is disclosed. A gated electrocardiogram signal having local maxima and minima values and trigger points is received. For a period of time, the time between each trigger point and the associated local maxima or minima is determined. In response to the trigger point occurring at the associated local maxima or minima, a zero time differential for a corrected trigger for gating is calculated, and in response to the trigger point not occurring at the associated local maxima or minima, a time differential for the corrected trigger for gating based on the time difference between the trigger point and the associated local maxima or minima is calculated.

7311705, Dec 25, 2007

Aug 12, 2004

10/916662

Jasbir S. Sra - Pewaukee WI, US

Medtronic, Inc. - Minneapolis MN

A61B 18/18

606 41, 607122

A catheter apparatus is provided for use in the treatment of heart arrhythmia having a catheter shaft, a mapping and ablation catheter disposed within the shaft, and a control mechanism coupled to both the shaft and catheter. The catheter shaft includes a main body and a coaxial tip section joined to the main body. The tip section can be rotated about a central axis and curved away from the central axis in a controlled manner. The mapping and ablation catheter can be extended outward from the catheter shaft where it is able to take the form of a pre-stressed curve. The control mechanism controls axial rotation of the tip section, the degree of deflection of the tip section and longitudinal movement of the mapping and ablation catheter with respect to the catheter shaft. Preferably, the mapping and ablation catheter forms a pre-stressed loop when it is fully extended from the catheter shaft. In another aspect of this invention, it provides a method for treatment of a heart arrhythmia having the steps of (1) obtaining cardiac image data from a medical imaging system, (2) creating a 3D model from this cardiac image data, (3) registering the 3D model to an interventional system, (4) positioning a catheter apparatus within a chamber of the heart, (5) displaying the catheter apparatus over the registered 3D model on the interventional system, (6) navigating the catheter apparatus within the heart guided by the registered 3D model, and (7) having the catheter apparatus ablate heart tissue at select locations.

7327872, Feb 5, 2008

Oct 13, 2004

10/964429

Régis Vaillant - Villabon sur Yvette, FR
Jasbir Singh Sra - Pewaukee WI, US
Jean Cousty - Neuilly sur Seine, FR
François Kotian - Guyancourt, FR

General Electric Company - Schenectady NY

G06K 9/00
G06K 9/32
A61B 6/00
G06F 19/00

382154, 382128, 382294

An imaging system for use in a medical intervention procedure is disclosed. A first image acquisition system of a first modality employing a catheter at an anatomical region of a patient is configured to produce a first image of the anatomical region using fluoroscopy, the first image comprising a set of fluoroscopy projection images. A second image acquisition system of a second different modality is configured to generate a 3D model of the anatomical region. An anatomical reference system is common to both the first and second image acquisition systems. A processing circuit is configured to process executable instructions for registering the 3D model with the fluoroscopy image in response to the common reference system and discernible parameters associated with the catheter in both the first and second image acquisition systems.

7343196, Mar 11, 2008

May 9, 2003

10/249815

Darin R. Okerlund - Muskego WI, US
Jasbir S. Sra - Pewaukee WI, US
Shankara B. Reddy - Cedarburg WI, US
Laurent Launay - St. Remy Pes Chevreube, FR
Melissa L. Vass - Milwaukee WI, US

GE Medical Systems Global Technology Company LLC - Waukesha WI

A61B 5/05

600424, 606130, 600429

A method for planning biventricular pacing lead placement for a patient includes obtaining acquisition data from a medical imaging system and generating a 3D model of the left ventricle and thoracic wall of the patient. One or more left ventricle anatomical landmarks are identified on the 3D model, and saved views of the 3D model are registered on an interventional system. One or more of the registered saved views are visualized with the interventional system, and at least one suitable region on the left ventricle wall is identified for epicardial lead placement.