Christopher James Knapp

US Patent:

6361780, Mar 26, 2002

Filed:

Nov 12, 1998

Appl. No.:

09/190902

Inventors:

Gregory R. Ley - New Brighton MN
Christopher Paul Knapp - Oakdale MN

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61K 900

US Classification:

424400, 424422, 424423, 424484, 424486, 424432, 424443, 604264, 604265

Abstract:

A drug delivery device is described comprising a porous biocompatible solid having at least one therapeutic drug within its pores, the therapeutic drug being removable from the pores by immersion in an aqueous solution. This may also be described as a drug delivery device comprising a porous annulus comprising a biocompatible solid having at least one therapeutic drug within its pores, the therapeutic drug being removable from the pores by immersion in an aqueous solution, the annulus having a top outer surface with an outside diameter, an inner surface with an inside diameter, and a side surface, at least one of the side surface and the top outer surface having openings of the pores exposed on that surface. The device may comprise pores having an average size of the greatest dimensions within the pores of between about 10 and 10 mm. The device may have a medical device or component of a medical device pass through an opening in the annulus.

US Patent:

6463334, Oct 8, 2002

Filed:

Jul 22, 1999

Appl. No.:

09/359580

Inventors:

David M. Flynn - Lino Lakes MN
Michael Brenzel - St. Paul MN
Jason Skubitz - Minneapolis MN
Larry L. Hum - Cottage Grove MN
Carol Werlein - Ham Lake MN
Christopher Paul Knapp - Oakdale MN
Gregory R. Ley - New Brighton MN
Jason Alan Shiroff - Las Vegas NV
Brian David Soltis - St. Paul MN

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 105

US Classification:

607127, 607122

Abstract:

A lead having an extendable and retractable fixation mechanism has a rotating terminal pin at the terminal end which rotates the fixation mechanism at the distal end. As the terminal pin is rotated, the fixation mechanism is extended or retracted from the distal end of the lead. A threaded collar allows for the fixation mechanism to smoothly extend and retract from the lead, and allows for a 1:1 turn ratio between the terminal pin and the fixation mechanism. A fluoroscopic ring disposed at the distal end of the lead provides information during the implantation process.

US Patent:

6501990, Dec 31, 2002

Filed:

Dec 23, 1999

Appl. No.:

09/472098

Inventors:

Gregory L. Sundberg - Stillwater MN
David M. Flynn - Lino Lakes MN
Michael Brenzel - St. Paul MN
Jason Skubitz - Minneapolis MN
Larry L. Hum - Cottage Grove MN
Carol Werlein - Ham Lake MN
Christopher Paul Knapp - Oakdale MN
Gregory R. Ley - New Brighton MN
Jason Alan Shiroff - Shoreview MN
Brian David Soltis - St. Paul MN

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 105

US Classification:

607122

Abstract:

A lead having an extendable and retractable fixation mechanism has a rotating terminal pin at the terminal end which rotates the fixation mechanism at the distal end. As the terminal pin is rotated, the fixation mechanism is extended or retracted from the distal end of the lead. A threaded collar allows for the fixation mechanism to smoothly extend and retract from the lead, and allows for a 1:1 turn ratio between the terminal pin and the fixation mechanism. A fluoroscopic ring disposed at the distal end of the lead provides information during the implantation process. The lead includes a terminal assembly having an outer terminal ring, a terminal pin, and an insulative sleeve disposed between the outer terminal ring and the terminal pin. The insulative sleeve is coupled with the outer terminal ring with a snap-fit connection.

US Patent:

6546289, Apr 8, 2003

Filed:

Apr 26, 2001

Appl. No.:

09/843441

Inventors:

Christopher P. Knapp - Ham Lake MN

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1375

US Classification:

607 37, 439909

Abstract:

An implantable medical lead including an angled collar located adjacent to or integral with the proximal connector assembly is provided. The angled collar provides a area having enhance rigidity to allow insertion of the connector assembly without kinking or otherwise bending the conductors within the lead body. The angled collar comprises a bend adjacent the proximal end of the lead having a reinforcing layer disposed about the lead body. The angled collar may include a textured surface to reduce the likelihood of the users finger or fingers sliding off of the angled collar during insertion.

US Patent:

6915169, Jul 5, 2005

Filed:

Oct 4, 2002

Appl. No.:

10/264494

Inventors:

David M. Flynn - Lino Lakes MN, US
Michael Brenzel - St. Paul MN, US
Jason Skubitz - Minneapolis MN, US
Larry L. Hum - Cottage Grove MN, US
Carol Werlein - Ham Lake MN, US
Christopher Paul Knapp - Oakdale MN, US
Gregory R. Ley - New Brighton MN, US
Jason Alan Shiroff - Las Vegas NV, US
Brian David Soltis - St. Paul MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N001/05

US Classification:

607122, 607116, 607119, 607127, 439909

Abstract:

A lead having an extendable and retractable fixation mechanism has a rotating terminal pin at the terminal end which rotates the fixation mechanism at the distal end. As the terminal pin is rotated, the fixation mechanism is extended or retracted from the distal end of the lead. A threaded collar allows for the fixation mechanism to smoothly extend and retract from the lead, and allows for a 1:1 turn ratio between the terminal pin and the fixation mechanism. A fluoroscopic ring disposed at the distal end of the lead provides information during the implantation process.

US Patent:

7035680, Apr 25, 2006

Filed:

Sep 23, 2003

Appl. No.:

10/668675

Inventors:

Scott Partridge - Blaine MN, US
Christopher P. Knapp - Ham Lake MN, US

Assignee:

Cardiac Pacemakers, Inc. - Saint Paul MN

International Classification:

A61B 5/04
A61N 1/05

US Classification:

600374, 607122, 607126, 607127, 607128

Abstract:

A catheter system includes a mapping catheter having an open lumen and a mapping arrangement provided at a distal end of the mapping catheter. A balloon catheter is movably disposed within the open lumen of the mapping catheter. The balloon catheter has an open lumen dimensioned to receive a lead. A balloon arrangement is provided at a distal end of the balloon catheter and inflatable with an inflation mechanism provided at a proximal end of the balloon catheter. The balloon arrangement is dimensioned to prevent movement of the lead upon inflation of the balloon arrangement, and to permit movement of the lead within the open lumen of the balloon catheter upon deflation of the balloon arrangement.

US Patent:

7242977, Jul 10, 2007

Filed:

Mar 17, 2006

Appl. No.:

11/378179

Inventors:

Scott Partridge - Blaine MN, US
Christopher P. Knapp - Ham Lake MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61B 5/04
A61N 1/05

US Classification:

600374, 607122, 607126, 607127, 607128

Abstract:

A catheter system includes a mapping catheter having an open lumen and a mapping arrangement provided at a distal end of the mapping catheter. A balloon catheter is movably disposed within the open lumen of the mapping catheter. The balloon catheter has an open lumen dimensioned to receive a lead. A balloon arrangement is provided at a distal end of the balloon catheter and inflatable with an inflation mechanism provided at a proximal end of the balloon catheter. The balloon arrangement is dimensioned to prevent movement of the lead upon inflation of the balloon arrangement, and to permit movement of the lead within the open lumen of the balloon catheter upon deflation of the balloon arrangement.

US Patent:

7366573, Apr 29, 2008

Filed:

Jun 10, 2005

Appl. No.:

11/150021

Inventors:

Christopher P. Knapp - Ham Lake MN, US
Kyle Hoecke - Lino Lakes MN, US
Mohan Krishnan - Shoreview MN, US
Rebecca Aron - Ann Arbor MI, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/02

US Classification:

607121, 607116, 607120

Abstract:

This document discusses, among other things, a lead assembly including a lead body, at least one conductor extending through the lead body, and a covering having varied material properties. In an example, the covering is made by forming pieces of material having varied material properties. In another example, the covering is made by varying parameters such as heat or tension during wrapping of a piece of material onto a lead assembly.