Boston Scientific Scimed, Inc.

Boston Scientific Corporation

Karen Larson

Michael D Gerdts

Richard Charles Gunderson

Karl Alan Jagger

Andrzej M Malewicz

John Robert Moberg

Susan I Shelso

Gary Pederson

Jonathan R Moberg

Catheters, as well as related systems and methods are disclosed.

Catheter

Stent delivery systems and methods for making and using stent delivery systems are disclosed. An example stent delivery system may include an inner member. A sheath may be disposed about the inner member. The sheath may include a proximal portion and a distal portion. The proximal portion of the sheath may define a first inner diameter and the distal portion of the sheath may define a second inner diameter greater than the first inner diameter. A bumper may be disposed about the inner member. The bumper may have an outer diameter that is greater than the first inner diameter of the sheath and that is less than the second inner diameter of the sheath.

An implantable medical endoprosthesis delivery system includes a sheath, a catheter at least partially surrounded by the sheath, and a bumper disposed between the sheath and the catheter. The bumper has at least some freedom of movement with respect to the catheter, and the sheath, catheter, and bumper are configured so that an implantable medical endoprosthesis can be disposed between the sheath and the catheter.

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.

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Lino Lakes, MN, United States of America

Karen Larson