Mark A Christianson

US Patent:

6728072, Apr 27, 2004

Filed:

Mar 6, 2002

Appl. No.:

10/093222

Inventors:

Shane J. Van Sloun - Waconia MN
Mark R. Christianson - Darwin MN
Stevenson J. Marek - Hutchinson MN
James R. Mahoney - Stewart MN
Mark A. Schmidt - Darwin MN
Brandon K. Fraser - Hutchinson MN
Jeffry S. Bennin - Hutchinson MN

Assignee:

Hutchinson Technology, Inc. - Hutchinson MN

International Classification:

G11B 548

US Classification:

3602446, 3602443, 3602445, 3602452

Abstract:

A head suspension assembly in a rigid disk drive having a load beam with a mounting region, a rigid region and a spring region located between the mounting region and rigid region. The mounting region includes an integral boss tower having attachment features. A method of making a multi-piece head suspension for a rigid disk drive is also disclosed. The method includes providing a first layer including a mounting region with an integral boss tower attached to a stiffener by one or more positioning tabs; attaching a second layer including a spring region to an interface between the mounting region and the stiffener; attaching a flexure to the stiffener; and removing the positioning tabs. The flexure can optionally be a portion of the second layer.

US Patent:

7170716, Jan 30, 2007

Filed:

Jan 30, 2004

Appl. No.:

10/768296

Inventors:

Shane J. Van Sloun - Waconia MN, US
Mark R. Christianson - Darwin MN, US
Stevenson J. Marek - Hutchinson MN, US
James R. Mahoney - Stewart MN, US
Mark A. Schmidt - Darwin MN, US
Brandon K. Fraser - Hutchinson MN, US
Jeffry S. Bennin - Hutchinson MN, US

Assignee:

Hutchinson Technology Incorporated - Hutchinson MN

International Classification:

G11B 5/48

US Classification:

3602446, 3602445, 2960304

Abstract:

A method of making a multi-piece head suspension for a rigid disk drive. The method includes providing a first layer including a mounting region with an integral boss tower attached to a stiffener by one or more positioning tabs; attaching a second layer including a spring region to an interface between the mounting region and the stiffener; attaching a flexure to the stiffener; and removing the positioning tabs. The flexure can optionally be a portion of the second layer.

US Patent:

7313855, Jan 1, 2008

Filed:

Dec 13, 2006

Appl. No.:

11/610314

Inventors:

Shane J. Van Sloun - Waconia MN, US
Mark R. Christianson - Darwin MN, US
Stevenson J. Marek - Hutchinson MN, US
James R. Mahoney - Stewart MN, US
Mark A. Schmidt - Hutchinson MN, US
Brandon K. Fraser - Hutchinson MN, US
Jeffry S. Bennin - Hutchinson MN, US

Assignee:

Hutchinson Technology, Inc. - Hutchinson MN

International Classification:

G11B 5/127
H04R 31/00

US Classification:

2960304, 2960301, 2960306, 29861, 29867, 3602345, 3602458

Abstract:

A method of making a multi-piece head suspension for a rigid disk drive. The method includes providing a first layer including a mounting region with an integral boss tower attached to a stiffener by one or more positioning tabs; attaching a second layer including a spring region to an interface between the mounting region and the stiffener; attaching a flexure to the stiffener; and removing the positioning tabs. The flexure can optionally be a portion of the second layer.

US Patent:

7691128, Apr 6, 2010

Filed:

Oct 14, 2005

Appl. No.:

11/249317

Inventors:

David J. Blaeser - Champlin MN, US
Peter T. Keith - St. Paul MN, US
Scott A. Olson - Zimmerman MN, US
Steven S. Hackett - Maple Grove MN, US
Thomas V. Ressemann - St. Cloud MN, US
Joel D. Phillips - Minneapolis MN, US
Mark R. Christianson - Darwin MN, US
Dennis W. Wahr - Ann Arbor MI, US

Assignee:

St. Jude Medical, Cardiology Division, Inc. - Minnetonka MN

International Classification:

A61B 17/08
A61D 1/00

US Classification:

606216, 606213, 623 111

Abstract:

Devices and methods for sealing a passageway formed by a patent foramen ovale (PFO track) in the heart are provided. One method includes providing an abrading device to the PFO track and abrading the tissue within the PFO track. The abraded tissue forming the PFO track is then held together under pressure, either via lowering right atrial pressure or via applying suction to the septum primum to pull it into apposition against the septum secundum. After a sufficient period of time, the pressure is released and the abraded tissue heals to form a robust seal over the PFO track. Additionally, several devices are provided which can be placed into the PFO track to apply adhesive to the walls of the PFO track. The devices may or may not be left within the PFO track. If the devices are not left within the PFO track, the walls of the PFO track, covered with adhesive, are brought into apposition with one another and adhered together.

US Patent:

7976564, Jul 12, 2011

Filed:

May 6, 2002

Appl. No.:

10/138565

Inventors:

David J. Blaeser - Champlin MN, US
Peter T. Keith - St. Paul MN, US
Scott A. Olson - Zimmerman MN, US
Steven S. Hackett - Maple Grove MN, US
Thomas V. Ressemann - St. Cloud MN, US
Joel D. Phillips - Minneapolis MN, US
Mark R. Christianson - Darwin MN, US
Dennis W. Wahr - Ann Arbor MI, US

Assignee:

St. Jude Medical, Cardiology Division, Inc. - St. Paul MN

International Classification:

A61B 17/08

US Classification:

606216, 606213, 606214, 606215

Abstract:

Devices and methods for sealing a passageway formed by a patent foramen ovale (PFO track) in the heart are provided. One method includes providing an abrading device to the PFO track and abrading the tissue within the PFO track. The abraded tissue forming the PFO track is then held together under pressure, either via lowering right atrial pressure or via applying suction to the septum primum to pull it into apposition against the septum secundum. After a sufficient period of time, the pressure is released and the abraded tissue heals to form a robust seal over the PFO track. Additionally, several devices are provided which can be placed into the PFO track to apply adhesive to the walls of the PFO track. The devices may or may not be left within the PFO track. If the devices are not left within the PFO track, the walls of the PFO track, covered with adhesive, are brought into apposition with one another and adhered together.

US Patent:

8029476, Oct 4, 2011

Filed:

Nov 19, 2008

Appl. No.:

12/273864

Inventors:

Michael S. Rosenberg - Eagan MN, US
Mark R. Christianson - Plymouth MN, US
Kyle P. Taylor - Brooklyn Park MN, US
Andrew T. Forsberg - Minneapolis MN, US
Edward A. Barlow - Bloomington MN, US

Assignee:

INTERRAD Medical, Inc. - Plymouth MN

International Classification:

A61M 5/32

US Classification:

604174, 604175, 604177, 60416403, 60416404, 60416501, 60416502, 60416503

Abstract:

Some embodiments of a medical anchor device include an elongate body coupled with deployable subcutaneous anchors to secure a catheter instrument (or other medical instrument) in place relative to a skin penetration point. In some circumstances, the elongate body may be in the form of catheter hub body, and the subcutaneous anchors can be deployed from the hub body by adjustment of a movable actuator. A locking member can interact with the actuator so as to retain the actuator in the deployed orientation during the medical procedure.

US Patent:

8038653, Oct 18, 2011

Filed:

Jul 16, 2008

Appl. No.:

12/174306

Inventors:

Michael Rosenberg - Eagan MN, US
Mark R. Christianson - Plymouth MN, US
Kyle P. Taylor - Brooklyn Park MN, US
Andrew T. Forsberg - Minneapolis MN, US
Jeffrey D. Killion - Plymouth MN, US

Assignee:

INTERRAD Medical, Inc. - Plymouth MN

International Classification:

A61M 5/32
A61F 11/00

US Classification:

604174, 604180, 606108

Abstract:

Some embodiments of a medical device anchor system include an anchor device that receives a medical instrument (such as a catheter or the like) and secures the instrument in place relative to a skin penetration point. In some circumstances, the anchor device may allow the anchor device to be used after medical instrument is already in place without the need for a second penetration point for the anchor device.

US Patent:

8137323, Mar 20, 2012

Filed:

Sep 9, 2011

Appl. No.:

13/229394

Inventors:

Michael S. Rosenberg - Eagan MN, US
Mark R. Christianson - Plymouth MN, US
Kyle P. Taylor - Brooklyn Park MN, US
Andrew T. Forsberg - Minneapolis MN, US
Edward A. Barlow - Bloomington MN, US

Assignee:

INTERRAD Medical, Inc. - Plymouth MN

International Classification:

A61M 5/32

US Classification:

604174, 60416403, 60416404, 604175

Abstract:

Some embodiments of a medical anchor device include an elongate body coupled with deployable subcutaneous anchors to secure a catheter instrument (or other medical instrument) in place relative to a skin penetration point. In some circumstances, the elongate body may be in the form of catheter hub body, and the subcutaneous anchors can be deployed from the hub body by adjustment of a movable actuator. A locking member can interact with the actuator so as to retain the actuator in the deployed orientation during the medical procedure.