Encapsulated stent preform
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United States of America Patent
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-
Nov 5, 2002
Grant Date -
N/A
app pub date -
Nov 16, 1999
filing date -
Nov 16, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a stent preform for implantation in a body lumen. The stent preform includes an elongated metal core having first and second core ends, a contact surface, and a solid cross-section, and a hollow outer sheath made of a biocompatible polymer and having first and second sheath ends, caps disposed on the sheath ends, and an interior surface. The outer sheath surrounds and contacts the contact surface of the core to prevent the core from directly contacting the body lumen. In another embodiment, the biocompatible polymer of the outer sheath is formed of a heat-shrinkable polymer material, and the elongated core is formed of a shape-memory alloy. In another embodiment, the outer sheath is formed from a polymer tape.
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