Stent delivery systems with a reduced profile
AssigneeBoston Scientific Scimed, Inc.
InventorsDEREK KENNETH LARSON, JIM HEMERICK
Life of this patent
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Abstract
Medical devices, medical device systems, and methods for making and using the same are disclosed. An example medical device may include an inner shaft having a stent receiving region. A bumper shaft may be disposed about the inner shaft. A deployment sheath may be slidably disposed about the inner shaft. The deployment sheath may have a body region and a distal stent covering region. The distal stent covering region may have an outer diameter that is smaller than an outer diameter of the body region.
Claims20
A medical device, comprising:
- an inner shaft having a stent receiving region;
- a bumper shaft disposed about the inner shaft;
- and
- a deployment sheath slidably disposed about the inner shaft, the deployment sheath having a body region and a distal stent covering region, the distal stent covering region having an outer diameter that is smaller than an outer diameter of the body region.
A method for manufacturing a stent delivery system, the method comprising:
- disposing a bumper shaft about an inner shaft, the inner shaft having a stent receiving region;
- disposing a deployment sheath disposed about the inner shaft, the deployment sheath having a body region, a distal stent covering region, and a first transition between the body region and the distal stent covering region, the distal stent covering region having an outer diameter that is smaller than an outer diameter of the body region;
- disposing a stent along the stent receiving region, the stent having a stent length;
- wherein the bumper shaft has a body portion, a distal portion, and a second transition between the body portion and the distal portion;
- and
- wherein the first transition is spaced from the second transition by a distance that has a length that is at least as long as the stent length.
A medical device system, comprising:
- an inner shaft having a stent receiving region;
- a self-expanding stent disposed along the stent receiving region, the stent having a stent length;
- a bumper shaft disposed about the inner shaft;
- a deployment sheath slidably disposed about the inner shaft, the deployment sheath having a body region, a distal stent covering region, and a first transition between the body region and the distal stent covering region, the distal stent covering region having an outer diameter that is smaller than an outer diameter of the body region;
- wherein the bumper shaft has a body portion, a distal portion, and a second transition between the body portion and the distal portion;
- wherein the first transition is spaced from the second transition by a distance that has a length that is at least as long as the stent length;
- and
- a handle coupled to the deployment sheath.
The medical device system of claim 20, wherein the first transition, the second transition, or both include an angled transition.
Dependencies are inferred from the claim text.