Jeffrey T Fish

US Patent:

8603084, Dec 10, 2013

Filed:

Nov 16, 2010

Appl. No.:

12/946941

Inventors:

Jeffrey M. Fish - Maple Grove MN, US
Israel A. Byrd - Richfield MN, US
Lynn E. Clark - Maplewood MN, US
Jeremy D. Dando - Plymouth MN, US
Christopher J. Geurkink - Minnetonka MN, US
Harry A. Puryear - Shoreview MN, US
Saurav Paul - Minneapolis MN, US

Assignee:

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

International Classification:

A61B 18/10

US Classification:

606 34

Abstract:

A method and system for assessing lesion formation in tissue is provided. The system includes an electronic control unit (ECU) configured to acquire magnitudes for a component of a complex impedance between an electrode and tissue, and the power applied to the tissue during lesion formation. The ECU is configured to calculate a value responsive to the complex impedance component and the power. The value is indicative of a predicted lesion depth, a likelihood the lesion has reached a predetermined depth, or a predicted tissue temperature. The method includes acquiring magnitudes for a component of a complex impedance between an electrode and tissue and the power applied during lesion formation. The method includes calculating a value responsive to the complex impedance component and the power, the value being indicative of a predicted lesion depth, a likelihood the lesion has reached a predetermined depth, and/or a predicted tissue temperature.

US Patent:

20110004087, Jan 6, 2011

Filed:

Jul 2, 2009

Appl. No.:

12/496855

Inventors:

Jeffrey M. Fish - Maple Grove MN, US
Sacha C. Hall - Minneapolis MN, US
Theodore A. Johnson - St. Paul MN, US

International Classification:

A61B 5/04
H01R 43/00

US Classification:

600373, 295921

Abstract:

An electrophysiology catheter includes an elongate catheter body having an elastically-deformable distal region predisposed to assume a spiral shape and a first plurality of electrodes disposed thereon. Each of the first plurality of electrodes includes an electrically active region limited to the inner surface of the spiral shape for use in non-contact electrophysiology studies. A second plurality of electrodes may also be disposed on the distal region interspersed (e.g., alternating) with the first plurality of electrodes, with each of the second plurality of electrodes having an electrically active region extending into the outer surface of the spiral shape for use in contact electrophysiology studies. The distal region may be deformed into a straight configuration for insertion into and navigation through the patient's vasculature, for example via use of a tubular introducer. As the distal region deploys beyond the distal end of the introducer, it resumes the spiral shape.

US Patent:

20110144524, Jun 16, 2011

Filed:

Dec 8, 2010

Appl. No.:

12/963257

Inventors:

Jeffrey M. Fish - Maple Grove MN, US
Israel A. Byrd - Richfield MN, US
Jeremy D. Dando - Plymouth MN, US

International Classification:

A61B 5/053
A61B 18/14
G06F 3/048

US Classification:

600547, 606 41, 715771

Abstract:

A system for displaying characteristics of target tissue during an ablation procedure is provided that includes an electronic control unit (ECU) configured to receive data regarding electrical properties of the target tissue for a time period. The ECU is also configured to determine a value responsive to the data and indicative of at least one of a predicted depth of a lesion in the target tissue, a predicted temperature of the target tissue, and a likelihood of steam pop of the target tissue for the time period. The system further includes a display device operatively connected to the ECU. The display device is configured to receive the value and display a visual representation indicative of at least one of a predicted depth of a lesion in the target tissue, a predicted temperature of the target tissue, and a likelihood of steam pop of the target tissue for the time period.

US Patent:

20110144657, Jun 16, 2011

Filed:

Dec 10, 2010

Appl. No.:

12/964956

Inventors:

Jeffrey M. Fish - Maple Grove MN, US
Israel A. Byrd - Richfield MN, US
Lynn E. Clark - Maplewood MN, US
Jeremy D. Dando - Plymouth MN, US
Christopher J. Geurkink - Minnetonka MN, US
Rohan Lathia - Westford MA, US
Harry A. Puryear - Shoreview MN, US
Valtino X. Afonso - Oakdale MN, US
Saurav Paul - Minneapolis MN, US

International Classification:

A61B 19/00
A61B 5/053

US Classification:

606130, 600547

Abstract:

A method and system for determining a likelihood of barotrauma occurring in tissue during the formation of a lesion therein is provided. The system includes an electronic control unit (ECU). The ECU is configured to acquire at least one value of at least one component of a complex impedance between an electrode and the tissue. The ECU is further configured to calculate an index responsive to the at least one value of the at least one complex impedance component. The index is indicative of a likelihood of barotrauma occurring in the tissue. The method comprises acquiring at least one value of at least one component of a complex impedance between an electrode and the tissue. The method further comprises calculating an index responsive to the at least one value of the at least one complex impedance component. The calculating index is indicative of a likelihood of barotrauma occurring in the tissue.

US Patent:

20190307500, Oct 10, 2019

Filed:

Nov 29, 2017

Appl. No.:

16/464738

Inventors:

- St. Paul MN, US
Jeffrey M. Fish - Maple Grove MN, US
Jeffrey A. Schweitzer - St. Paul MN, US
Daniel J. Potter - Stillwater MN, US
Gregory K. Olson - Elk River MN, US
Frederik H. M. Wittkampf - Lage Vuursche, NL
Rene Van Es - Utrecht, NL

International Classification:

A61B 18/12
A61B 18/14

Abstract:

The present disclosure provides electroporation systems, methods of controlling electroporation systems to limit electroporation arcs through intracardiac catheters, and catheters for electroporation systems. One method of controlling an electroporation system including a direct current (DC) energy source, a return electrode connected to the DC energy source, and a catheter connected to the DC energy source is disclosed. The catheter has a at least one catheter electrode. The method includes positioning the return electrode near a target location within a body and positioning the catheter electrode adjacent the target location within the body. A system impedance is determined with the return electrode positioned near the target location and the catheter electrode positioned within the body. The system impedance is adjusted to a target impedance to arcing from the catheter electrode.

US Patent:

20180092689, Apr 5, 2018

Filed:

Oct 3, 2017

Appl. No.:

15/724157

Inventors:

- St. Paul MN, US
Brett A. Hillukka - Hanover MN, US
Timothy G. Curran - Ramsey MN, US
Jeffrey M. Fish - Maplewood MN, US

International Classification:

A61B 18/14

Abstract:

Aspects of the present disclosure are directed to, for example, a method for determining a temperature distribution across an ablation catheter tip. The method including contacting tissue with a distal tip of an ablation catheter, receiving temperature data from a plurality of thermocouples distributed about the distal tip of the ablation catheter, and based on the received temperature data, determine a temperature distribution across the distal tip of the ablation catheter. Also disclosed is a method of controlling the temperature of an ablation catheter tip while creating a desired lesion using various energy sources and energy delivery methodologies.

US Patent:

20140358038, Dec 4, 2014

Filed:

Oct 2, 2012

Appl. No.:

14/369069

Inventors:

- St. Paul MN, US
Jeffrey M. Fish - Maple Grove MN, US
Lynn E. Clark - Maplewood MN, US
Saurav Paul - Minneapolis MN, US

International Classification:

A61B 7/04
A61B 18/14
A61B 5/00

US Classification:

600586, 606 42

Abstract:

A system that automatically detects a myocardial barotrauma (i.e., tissue pop) event so that proper post-procedure care can be given includes an electronic control unit (ECU), a computer-readable memory coupled with the ECU, and detection logic stored in the memory configured to be executed by the ECU. The detection logic is configured to receive a signal generated by an electro-acoustic transducer related to acoustic activity within the patient, monitor the signal for a pre-determined indication of a barotrauma event, and output a notification when the pre-determined indication is detected. The transducer can be integrated with an extra-body patch that includes one or more electrodes for use with a medical device navigation system.