JONATHAN KAGAN
Engineers in Minneapolis, MN

6826421, Nov 30, 2004

Jun 7, 2000

09/589409

Graydon Ernest Beatty - St. Paul MN 55108
Jonathan Kagan - Minneapolis MN 55441
Jeffrey Robert Budd - St. Paul MN 55108

A61B 5042

600374, 600509, 607122

A mapping catheter is described to map electric field activity in a heart chamber. The catheter has a first grouping of electrodes positioned so that they are not in contact with the patients heart. The catheter also having a second set of electrodes positioned in contact with the patients heart.

2006008, Apr 20, 2006

Nov 3, 2005

11/265139

Graydon Beatty - St. Paul MN, US
Jonathan Kagan - Minneapolis MN, US
Jeffrey Budd - St. Paul MN, US

Endocardial Solutions, Inc. - St. Paul MN

A61B 18/18

606041000

A method of delivering ablation therapy in a heart chamber includes inserting a catheter in the heart chamber. Electrophysiological data in the heart chamber is acquired with the catheter. The position of the catheter is determined using an electromagnetic field source external to the heart chamber, and the location of the acquired electrophysiological data is determined using the position of the catheter. The acquired electrophysiological data is integrated with the location of the acquired electrophysiological data. Information related to the three-dimensional geometry of at least a portion of the heart chamber is received. A continuous three-dimensional color-coded map of the electrophysiological data is created and superimposed on a geometrical representation of the three-dimensional geometry information. The map is then utilized to deliver ablation therapy.

5810807, Sep 22, 1998

Oct 15, 1996

8/732092

Robert A. Ganz - Minneapolis MN
Jonathan Kagan - Minneapolis MN
Ricci D. Smelser - Maple Lake MN
Brian D. Zelickson - Minneapolis MN
Robert D. Mackie - North Oaks MN

A61B 1736

606 47

A sphincterotome adapted to be used in the lumen of an endoscope for cutting a sphincter in a patient's body using a cutting wire energized by an electrosurgical unit. The sphincterotome has a distal end segment and cutting plane orienting mechanism extending through the length of a sphincterotome tubular body between a handle assembly at the proximal end of the sphincterotome body and a distal end segment thereof for shifting the cutting plane laterally with respect to the longitudinal axis of the sphincterotome tubular body exiting the endoscope lumen. The lateral shift is in at least one lateral direction from an un-shifted position of the cutting plane with respect to the longitudinal axis whereby in use during a sphincterotomy, the cutting wire may be oriented into alignment with a particular feature of the sphincter, e. g. the twelve o'clock position of the sphincter of Oddi and papilla of Vater, without having to reposition the endoscope and/or withdraw and reposition the sphincterotome in the endoscope lumen.

5297549, Mar 29, 1994

Sep 23, 1992

7/950448

Graydon E. Beatty - St. Paul MN
Jonathan Kagan - Minneapolis MN
Jeffrey R. Budd - St. Paul MN

Endocardial Therapeutics, Inc. - St. Paul MN

A61B 504

128642

An array of electrode sites are placed in a heart chamber. The shape of the chamber and the location of the electrodes is determined via impedance plethysmography. Electrical measurements taken from the electrode array and referenced to a surface contacting electrode is used to generate a three-dimensional map of electrical activity. A two-dimensional map of the electrical activity within the endocardial surface is also computed.

6978168, Dec 20, 2005

Feb 26, 2003

10/375752

Graydon Ernest Beatty - St. Paul MN, US
Jonathan Kagan - Minneapolis MN, US
Jeffrey Robert Budd - St. Paul MN, US

Endocardial Solutions, Inc. - St. Paul MN

A61B005/0402

600513, 600523

A computer software program is described that maps the electrical activity of a patient's heart. The software program utilizes inputs from electrodes contained within a heart chamber. Inputs from the electrodes cause the program to calculate the heart chamber volume, and then to determine the position of the electrodes within the heart chamber. The program then utilizes inputs from the electrodes to calculate the three-dimensional volumetric electrical field distribution of said heart chamber. This calculation is accomplished using a spherical harmonic series expression. Finally, the computer program displays the electrical field distribution of the heart chamber.

2006008, Apr 20, 2006

Nov 3, 2005

11/265138

Graydon Beatty - St. Paul MN, US
Jonathan Kagan - Minneapolis MN, US
Jeffrey Budd - St. Paul MN, US

Endocardial Solutions, Inc. - St. Paul MN

A61B 18/18

606041000

A method of acquiring and mapping physiological data in a heart chamber includes inserting a catheter into the heart chamber. Physiological data in the heart chamber is acquired with the catheter. The position of the catheter is determined, and the location of the acquired physiological data is determined using the position of the catheter. Information related to the three-dimensional geometry of at least a portion of the heart chamber is received, and a three-dimensional map of the physiological data is created and superimposed on a geometrical representation of the three-dimensional geometry information.

7831288, Nov 9, 2010

Jun 7, 2000

09/589387

Graydon Ernest Beatty - St. Paul MN, US
Jonathan Kagan - Minneapolis MN, US
Jeffrey Robert Budd - St. Paul MN, US

St. Jude Medical, Atrial Fibrillation Division, Inc. - St. Paul MN

A61B 5/042

600374, 600509, 607122

A method of mapping electrical activity of a patient's heart. The system includes a set of electrodes spaced from the heart wall and a set of electrodes in contact with the heart wall. Voltage measurements from the electrodes are used to generate three-dimensional and two-dimensional maps of the electrical activity of the heart.

6947785, Sep 20, 2005

Apr 12, 2000

09/547476

Graydon Ernest Beatty - St. Paul MN, US
Jonathan Kagan - Minneapolis MN, US
Jeffrey Robert Budd - St. Paul MN, US
John Anderson Hauck - Shoreview MN, US

A61B005/05

600427

A mapping catheter is positioned in a heart chamber, and active electrode sites are activated to impose an electric field within the chamber. The blood volume and wall motion modulates the electric field, which is detected by passive electrode sites on the preferred catheter. Electrophysiology measurements, as well as geometry measurements, are taken from the passive electrodes and used to display a map of intrinsic heart activity.

6240307, May 29, 2001

May 26, 1995

8/387832

Graydon Ernest Beatty - St. Paul MN
Jonathan Kagan - Minneapolis MN
Jeffrey Robert Budd - St. Paul MN

Endocardial Solutions, Inc. - St. Paul MN

A61B 5042

600374

A system for mapping electrical activity of a patient's heart includes a set of electrodes spaced from the heart wall and a set of electrodes in contact with the heart wall. Voltage measurements from the electrodes are used to generate three-dimensional and two-dimensional maps of the electrical activity of the heart.