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Bioerodible endoprosthesis

A biological and biodegradable technology, applied in the field of internal prosthesis, can solve the problems of channel blockage and weakening

Inactive Publication Date: 2012-05-16
BOSTON SCI SCIMED INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These channels sometimes become blocked or weakened

Method used

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  • Bioerodible endoprosthesis
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  • Bioerodible endoprosthesis

Examples

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Embodiment Construction

[0019] refer to Figures 1A-1C , the stent 20 is disposed above the balloon 12, the balloon 12 is carried near the distal end of the catheter 14, and the stent 20 is guided through the lumen 16 ( Figure 1A ) until the part carrying the balloon and the stent reaches the area of ​​the obstruction 18. The stent 20 is then radially deployed, e.g., by inflating the balloon 12, the stent 20 is compressed against the vessel wall, with the result that the occlusion 18 is compressed and the vessel wall around it undergoes radial deployment ( Figure 1B ). The pressure is then released from the balloon and the catheter is expelled from the vessel ( Figure 1C ).

[0020] refer to Figure 2A and 2B , the expandable stent 20 may have a tubular stent body arranged around an axis and formed by two coaxially arranged tubular members 21, 21' formed of different biodigestible metal components. For example, one member, such as the outer member 21, is made of a fast corroding metal, such a...

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Abstract

A stent includes a first tubular element formed of a first bioerodible metal composition and second tubular element formed of a second biodegradable metal composition. The first and second tubular elements are concentrically arranged; and the first and second bioerodible metal compositions are different

Description

technical field [0001] The present invention relates to endoprostheses and, more particularly, to stents. Background technique [0002] The body includes various passages, such as arteries, other blood vessels, and other body lumens. These channels sometimes become blocked or weakened. For example, the passage can be blocked by a tumor, restricted by deposits of fatty material within the arterial vessel wall, or weakened by an aneurysm. When this happens, the channel can be reopened or enhanced, or even replaced, using a medical endoprosthesis. An endoprosthesis is generally a tubular member that is placed within a lumen of the body. Examples of endoprostheses include stents, stent grafts, and stent grafts. [0003] The endoprosthesis may be delivered within the body by a catheter that supports the endoprosthesis in a compact or reduced size form when the endoprosthesis is delivered to a desired location. Once this location is reached, the endoprosthesis is deployed, fo...

Claims

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Application Information

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IPC IPC(8): A61F2/90
CPCA61F2250/003A61F2210/0004A61F2/91A61F2/852A61F2250/0063A61F2220/0033A61F2220/005
Inventor J.韦伯T.肖伊尔曼
Owner BOSTON SCI SCIMED INC
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