Medical devices including metallic films and methods for making same
AssigneeBoston Scientific Scimed, Inc.
InventorsMasoud Molaei, Alexander Leynov, Robert Obara
Life of this patent
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Abstract
Medical devices, such as endoprostheses, and methods of making the devices are disclosed. The medical device can include a stent body and a cover including a deposited metallic film. The medical device can be delivered using a delivery device along a tortuous body passage to a treatment site without damaging the medical device, delivery device, or the body passage. In some cases, the stent body is a flexible helical stent body, which may be threaded through one or more fenestrations of the cover. The cover may include longitudinally extending slits or seams, which help the cover to pass through small radii passages without buckling.
Claims20
An endoprosthesis, comprising:
- a generally tubular framework comprising at least one helical member;
- and
- concentric with the framework, a deposited metallic film, the metallic film having a thickness of less than about 50 μm.
An endoprosthesis, comprising:
- a generally tubular framework;
- and
- concentric with the framework, a cover comprising at least one deposited metallic film defining a thickness of about 50 μm or less, the cover defining a length and a plurality of slits, each slit defining a length and extending generally along a longitudinal axis of the endoprosthesis, the length of each slit being at least about 30% as long as the length of the cover.
An endoprosthesis, comprising:
- a generally tubular metallic film comprising first and second end portions and a central portion, the metallic film of the central portion having a thickness of less than about 25 μm, the metallic film of the end portions having a thickness greater than the central portion and less than about 50 μm.
An endoprosthesis defining a longitudinal axis and configured to have a radially compacted state within a delivery device and a radially expanded state when deployed within a body passage, the endoprosthesis comprising:
- a generally tubular metallic film defining a thickness of about 50 μm or less, the metallic film comprises a plurality of first apertures and a plurality of second apertures, the first and second apertures oriented generally perpendicular to one another, each first aperture is configured to (a) define an opening when the catheter is in the radial compacted state and (b) define a slit when the catheter is in the radially expanded state, each second aperture is configured to (a) define a slit when the catheter is in the radial compacted state and (b) define an opening when the catheter is in the radially expanded state.
Dependencies are inferred from the claim text.