Apparatus for placing an endoprosthesis
First Claim
Patent Images
1. A system for deploying a stent, comprising:
- a tube having at least two windows therethrough, said windows being spaced a distance apart along said tube;
at least one anchor wire extending through said tube;
a stent wrapped around said tube and extending between said windows, said stent comprising an endless loop of material having a pair of separate legs that are connected by a pair of end cusps, each of said cusps extending through one of said windows and engaging an anchor wire within said tube such that when said anchor wire is withdrawn through said tube said anchor wire releases said cusp.
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Abstract
An endoprosthesis or stent comprising a continuous loop of material is disclosed, along with a method and systems for deploying the stent at a desired location within a collapsed vessel. The stent can comprise a double spiral configuration or a double helix configuration, and can be coated with a slippery biocompatable substance. The systems for deploying a stent include catheters capable of maintaining a stent in a reduced diameter state and releasing the stent so that it can resume it expanded diameter state at the implantation site.
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Citations
11 Claims
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1. A system for deploying a stent, comprising:
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a tube having at least two windows therethrough, said windows being spaced a distance apart along said tube; at least one anchor wire extending through said tube; a stent wrapped around said tube and extending between said windows, said stent comprising an endless loop of material having a pair of separate legs that are connected by a pair of end cusps, each of said cusps extending through one of said windows and engaging an anchor wire within said tube such that when said anchor wire is withdrawn through said tube said anchor wire releases said cusp. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for deploying a stent, comprising:
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a cylindrical support device supporting first and second retainers axially spaced apart thereon; a stent comprising an endless loop of material, said stent wrapped around said support device and extending between said retainers, said endless loop comprising a pair of separate legs connected by a pair of cusps, each of said cusps engaging one of said retainers, the engagement of said cusps with said retainers maintaining said stent in wrapped relationship to said device such that when said retainers are disengaged from said stent, said cusps are released and said stent is thereby released from said device. - View Dependent Claims (9, 10, 11)
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Specification