Michael D Gerdts

US Patent:

6689120, Feb 10, 2004

Filed:

Aug 4, 2000

Appl. No.:

09/632863

Inventors:

Michael D. Gerdts - Big Lake MN

Assignee:

Boston Scientific SciMed, Inc. - Maple Grove MN

International Classification:

A61M 2500

US Classification:

604526, 604527

Abstract:

A catheter is formed with a layered wall construction including an inside tube formed of a low friction polymer, a polymeric outside tube, and a metallic reinforcement braid embedded in the wall between the inside and outside tubes. The braid is composed of multiple elongate flexible strands preferably of stainless steel, wound in two opposite directions and interbraided with one another. Each strand has a rectangular transverse profile, with a profile width at least three times the profile thickness. The strands are wound with their thicknesses directed radially of the catheter wall, permitting the catheter wall to be formed at a reduced thickness while maintaining favorable structural characteristics including pushability, torqueability, flexibility and resistance to kinking. As a result, the catheters outside diameter can be reduced without reducing its interior lumen, or alternatively a larger interior lumen can be provided in a catheter of a given size.

US Patent:

6723071, Apr 20, 2004

Filed:

Jun 4, 2003

Appl. No.:

10/454269

Inventors:

Michael Gerdts - Big Lake MN
Mary Bronson - Elk River MN
August Powell - Zimmerman MN

Assignee:

SciMed Life Systems, Inc. - Maple Grove MN

International Classification:

A61M 2900

US Classification:

60410304, 604 9601, 606195, 623 112

Abstract:

A rapid exchange stent delivery catheter which includes an inner tubular member and an outer tubular member slidably disposed thereon. The inner tubular member and the outer tubular member have rapid exchange type guide wire openings. The guide wire opening of the outer tubular member is preferably shorter in length than the guide wire opening of the inner tubular member to protect the inner workings of the catheter. The outer tubular member may include a guide wire access sleeve having a guide wire ramp extending into the guide wire lumen of the inner tubular member. The guide wire sleeve may be a separate component from the remainder of the outer tubular member to facilitate efficient manufacture.

US Patent:

6890317, May 10, 2005

Filed:

Feb 24, 2004

Appl. No.:

10/785350

Inventors:

Michael Gerdts - Big Lake MN, US
Mary Bronson - Elk River MN, US
August Powell - Zimmerman MN, US

Assignee:

SciMed Life Systems, Inc. - Maple Grove MN

International Classification:

A61M029/00

US Classification:

60410304, 604 9601, 606195, 623 112

Abstract:

A rapid exchange stent delivery catheter which includes an inner tubular member and an outer tubular member slidably disposed thereon. The inner tubular member and the outer tubular member have rapid exchange type guide wire openings. The guide wire opening of the outer tubular member is preferably shorter in length than the guide wire opening of the inner tubular member to protect the inner workings of the catheter. The outer tubular member may include a guide wire access sleeve having a guide wire ramp extending into the guide wire lumen of the inner tubular member. The guide wire sleeve may be a separate component from the remainder of the outer tubular member to facilitate efficient manufacture.

US Patent:

7115109, Oct 3, 2006

Filed:

Mar 30, 2005

Appl. No.:

11/094401

Inventors:

Michael Gerdts - Big Lake MN, US
Mary Bronson - Elk River MN, US
August Powell - Zimmerman MN, US

Assignee:

Scimed Life Systems, Inc. - Maple Grove MN

International Classification:

A61M 29/00

US Classification:

60410304, 604 9601, 606195, 623 112

Abstract:

A rapid exchange stent delivery catheter includes an inner tubular member having a proximal portion, a distal portion, a stent holding portion located adjacent the distal portion of the inner member, and a guide wire lumen extending from a proximal guide wire opening disposed distal of the proximal portion of the inner member to a distal guide wire opening disposed at a distal end of the inner member. The proximal guide wire opening has a first length. An outer tubular member is slidably disposed about the inner member. The outer member has a proximal portion, a distal portion, and a guide wire opening disposed distal of the proximal portion of the outer member. The guide wire opening of the outer member has a second length that is shorter than the first length and a guide wire ramp extends into, and is movable along the first length.

US Patent:

7284401, Oct 23, 2007

Filed:

Jan 12, 2004

Appl. No.:

10/755752

Inventors:

Karen Larson - Lino Lakes MN, US
Karl A. Jagger - Deephaven MN, US
Richard C. Gunderson - Maple Grove MN, US
Michael Gerdts - Big Lake MN, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

B21D 37/18
B21D 41/04

US Classification:

72 44, 72 54, 72402

Abstract:

A system for reducing the diameter of a stent comprises a stent contracting assembly and a fluid source. The assembly comprises a plurality of contracting members that define a diameter reduction chamber for receiving a stent. When the chamber is in a pre-reduction configuration the stent has a first diameter and when the chamber is in a reduced configuration the stent has a second diameter. The second diameter is less than the first diameter. The fluid source is in fluid communication with the chamber and is constructed and arranged to inject a fluid therein. The fluid forms a fluid bearing between the contracting members and the stent which prevents the contracting members from contacting the stent in the reduced diameter configuration.

US Patent:

7468053, Dec 23, 2008

Filed:

Sep 22, 2006

Appl. No.:

11/525296

Inventors:

Michael Gerdts - Big Lake MN, US
Mary Bronson - Elk River MN, US
August Powell - Zimmerman MN, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

A61M 29/00

US Classification:

60410304, 604 9601, 606195, 623 112

Abstract:

A rapid exchange stent delivery catheter includes an inner tubular member having a proximal portion, a distal portion, a stent holding portion located adjacent the distal portion of the inner member, and a guide wire lumen extending from a proximal guide wire opening disposed distal of the proximal portion of the inner member to a distal guide wire opening disposed at a distal end of the inner member. The proximal guide wire opening has a first length. An outer tubular member is slidably disposed about the inner member. The outer member has a proximal portion, a distal portion, and a guide wire opening disposed distal of the proximal portion of the outer member. The guide wire opening of the outer member has a second length that is shorter than the first length and a guide wire ramp extends into, and is movable along the first length.

US Patent:

7621946, Nov 24, 2009

Filed:

Mar 6, 2006

Appl. No.:

11/368876

Inventors:

Karen Turner - Lino Lakes MN, US
John Blix - Maple Grove MN, US
John R. Moberg - Elk River MN, US
Michael Gerdts - Big Lake MN, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

A61F 2/06

US Classification:

623 111

Abstract:

Implantable medical endoprosthesis delivery systems and methods for making and using the same. An example implantable medical endoprosthesis delivery system may include an inner member having a first lumen disposed therein. An outer member may at least partially surround the inner member so that a second lumen is disposed between the inner and outer members. The second lumen may be configured so that an implantable medical endoprosthesis can be disposed therein. The delivery system may also include a hub including a fluid introduction port, a first fluid flow path in fluid communication with the fluid introduction port, and a second fluid flow path in fluid communication with the fluid introduction port.

US Patent:

7658757, Feb 9, 2010

Filed:

Oct 8, 2004

Appl. No.:

10/961804

Inventors:

John R. Moberg - Elk River MN, US
Michael Gerdts - Big Lake MN, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

A61F 2/06

US Classification:

623 111

Abstract:

Endoprothesis delivery systems and methods for making an using the same. An example medical endoprosthesis delivery system may include an inner member. An outer member may at least partially surround the inner member. The inner member and the outer member may be configured so that an implantable medical endoprosthesis can be disposed therebetween. A coupling device may be coupled to a portion of the outer member so that, when there is substantially no slack in the coupling device, as the coupling device moves in a proximal direction the portion of the outer member moves in the proximal direction. An adjustable stop may be coupled to the coupling device so that, when there is slack in the coupling device, as the adjustable stop is moved in the proximal direction, the amount of slack in the coupling device can be reduced.