Michael W Holtz

US Patent:

20100049031, Feb 25, 2010

Filed:

Aug 19, 2009

Appl. No.:

12/544112

Inventors:

Benjamin R. Fruland - Plymouth MN, US
Kai Kroll - Plymouth MN, US
Tom A. Nelson - Elk River MN, US
Stephen K. Sundquist - Minnetonka MN, US
Michael C. Holtz - Elk River MN, US

International Classification:

A61B 18/18
A61B 5/055
A61B 8/12
A61B 5/05

US Classification:

600411, 600439, 606 41, 600424

Abstract:

Systems and methods for non-thermal ablation of tissue are provided. A non-implantable minimally invasive system for treatment of tissue in a body via direct current ablation is provided including a catheter, a plurality of electrodes for deployment through the catheter, a power source for applying power to the electrodes, and a fixation element for maintaining the catheter in a treatment position during treatment of the tissue. A minimally invasive method for treating tissue in a body via direct current ablation is provided including inserting a catheter into the body such that a portion of the catheter remains outside of the body, deploying a fixation element to fix the catheter in a treatment position, deploying a plurality of electrodes through the catheter, applying power to the plurality of electrodes, using the electrodes to apply a current to the tissue, and removing the catheter from the body.

US Patent:

20100049188, Feb 25, 2010

Filed:

Aug 19, 2009

Appl. No.:

12/544134

Inventors:

Tom A. Nelson - Elk River MN, US
Kai Kroll - Plymouth MN, US
Benjamin R. Fruland - Plymouth MN, US
Michael C. Holtz - Elk River MN, US
Stephen K. Sundquist - Minnetonka MN, US

International Classification:

A61B 18/18

US Classification:

606 34

Abstract:

Systems and methods for non-thermal ablation of tissue are provided. A non-implantable minimally invasive system for treatment of tissue in a body via direct current ablation is provided including a catheter, a plurality of electrodes for deployment through the catheter, a power source for applying power to the electrodes, and a fixation element for maintaining the catheter in a treatment position during treatment of the tissue. A minimally invasive method for treating tissue in a body via direct current ablation is provided including inserting a catheter into the body such that a portion of the catheter remains outside of the body, deploying a fixation element to fix the catheter in a treatment position, deploying a plurality of electrodes through the catheter, applying power to the plurality of electrodes, using the electrodes to apply a current to the tissue, and removing the catheter from the body.

US Patent:

20100049192, Feb 25, 2010

Filed:

Aug 19, 2009

Appl. No.:

12/544127

Inventors:

Michael C. Holtz - Elk River MN, US
Stephen K. Sundquist - Minnetonka MN, US
Benjamin R. Fruland - Plymouth MN, US
Tom A. Nelson - Elk River MN, US
Kai Kroll - Plymouth MN, US

International Classification:

A61B 18/18

US Classification:

606 41

Abstract:

Systems and methods for non-thermal ablation of tissue are provided. A non-implantable minimally invasive system for treatment of tissue in a body via direct current ablation is provided. A catheter for use in such system is further provided. The catheter includes a tubular body having a proximal end, a distal end, and a tip positioned at the distal end. The tubular body is semi-flexible, bi-directionally torqueable, and chemically resistant. The tubular body includes a plurality of routing holes provided between the proximal end and the distal end for facilitating deployment of electrodes from the tubular body. The tubular body further comprises an inner sheath generally at an interior portion and an outer sheath generally at an exterior portion and being chemically resistant.

US Patent:

20110106072, May 5, 2011

Filed:

Aug 19, 2009

Appl. No.:

12/544119

Inventors:

Stephen K. Sundquist - Minnetonka MN, US
Michael C. Holtz - Elk River MN, US
Benjamin R. Fruland - Plymouth MN, US
Tom A. Nelson - Elk River MN, US
Kai Kroll - Plymouth MN, US

International Classification:

A61B 18/00

US Classification:

606 41

Abstract:

A non-implantable minimally invasive system for treatment of tissue in a body via direct current ablation is provided. A low-corrosion electrode for use with such system is further provided. In one embodiment the electrode includes a catheter end configured for coupling to a catheter, a tip configured for puncturing the tissue, and a length extending between the catheter and the tip. The length includes an active portion and an insulated portion. The active potion is electrically conductive and is between approximately 3 mm and approximately 12 mm long at an inserted portion of the electrode. The length further comprises an inner core formed of a material having a high resistance to deformation and an outer shell formed of a material having a high resistance to material decomposition.

US Patent:

20200281647, Sep 10, 2020

Filed:

Mar 2, 2020

Appl. No.:

16/806890

Inventors:

- Sydney, AU
Kai Kroll - Plymouth MN, US
Tom A. Nelson - Elk River MN, US
Stephen K. Sundquist - Minnetonka MN, US
Michael C. Holtz - Elk River MN, US

International Classification:

A61B 18/14
A61B 34/00
A61B 18/12
A61B 18/16
A61B 18/18
A61N 1/36

Abstract:

Systems and methods for non-thermal ablation of tissue are provided. A non-implantable minimally invasive system for treatment of tissue in a body via direct current ablation is provided including a catheter, a plurality of electrodes for deployment through the catheter, a power source for applying power to the electrodes, and a fixation element for maintaining the catheter in a treatment position during treatment of the tissue. A minimally invasive method for treating tissue in a body via direct current ablation is provided including inserting a catheter into the body such that a portion of the catheter remains outside of the body, deploying a fixation element to fix the catheter in a treatment position, deploying a plurality of electrodes through the catheter, applying power to the plurality of electrodes, using the electrodes to apply a current to the tissue, and removing the catheter from the body.

US Patent:

20170231693, Aug 17, 2017

Filed:

Mar 10, 2017

Appl. No.:

15/455358

Inventors:

- Sydney, AU
Kai Kroll - Plymouth MN, US
Benjamin R. Fruland - Plymouth MN, US
Michael C. Holtz - Elk River MN, US
Stephen K. Sundquist - Minnetonka MN, US

International Classification:

A61B 18/14
A61B 34/00
A61B 18/18
A61N 1/36
A61B 18/12
A61B 18/16

Abstract:

Systems and methods for non-thermal ablation of tissue are provided. A non-implantable minimally invasive system for treatment of tissue in a body via direct current ablation is provided including a catheter, a plurality of electrodes for deployment through the catheter, a power source for applying power to the electrodes, and a fixation element for maintaining the catheter in a treatment position during treatment of the tissue. A minimally invasive method for treating tissue in a body via direct current ablation is provided including inserting a catheter into the body such that a portion of the catheter remains outside of the body, deploying a fixation element to fix the catheter in a treatment position, deploying a plurality of electrodes through the catheter, applying power to the plurality of electrodes, using the electrodes to apply a current to the tissue, and removing the catheter from the body.

US Patent:

20160206370, Jul 21, 2016

Filed:

Dec 15, 2015

Appl. No.:

14/969889

Inventors:

- Sydney, AU
Kai Kroll - Plymouth MN, US
Tom A. Nelson - Elk River MN, US
Stephen K. Sundquist - Minnetonka MN, US
Michael C. Holtz - Elk River MN, US

International Classification:

A61B 18/14
A61B 18/12
A61B 34/00

Abstract:

Systems and methods for non-thermal ablation of tissue are provided. A non-implantable minimally invasive system for treatment of tissue in a body via direct current ablation is provided including a catheter, a plurality of electrodes for deployment through the catheter, a power source for applying power to the electrodes, and a fixation element for maintaining the catheter in a treatment position during treatment of the tissue. A minimally invasive method for treating tissue in a body via direct current ablation is provided including inserting a catheter into the body such that a portion of the catheter remains outside of the body, deploying a fixation element to fix the catheter in a treatment position, deploying a plurality of electrodes through the catheter, applying power to the plurality of electrodes, using the electrodes to apply a current to the tissue, and removing the catheter from the body.

US Patent:

20080064966, Mar 13, 2008

Filed:

Mar 22, 2007

Appl. No.:

11/728190

Inventors:

Brian Brockway - Shoreview MN, US
Gregory Doten - Crystal MN, US
Michael Holtz - South St. Paul MN, US
Michael Kalm - Spring Lake Park MN, US
Scott Kuehn - Bloomington MN, US
Scott Lambert - East Bethel MN, US
Gregg Lichtscheidl - Roseville MN, US
Perry Mills - Arden Hills MN, US
Oleg Mosesov - Minneapolis MN, US
Demetre Nicoloff - Wayzata MN, US
Karen Odden - Baldwin WI, US
Soon Park - Stillwater MN, US
Christopher Quinn - Minneapolis MN, US
Alyse Stofer - Woodbury MN, US
Jeff Taylor - Wyoming MN, US
Justin Van Hee - Minneapolis MN, US
Lynn Zwiers - Lino Lakes MN, US
Dan Huetteman - Minneapolis MN, US
Dave Lodin - Zimmerman MN, US
Jeremy Riedesel - Minneapolis MN, US

Assignee:

Transoma Medical, Inc. - St. Paul MN

International Classification:

A61B 5/0215

US Classification:

600486000, 600017000, 604004010, 604066000

Abstract:

Endocardial pressure measurement devices, systems and methods for the effective treatment of congestive heart failure and its underlying causes, in addition to other clinical applications.