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US 2020/0138609 A1Published application
Woven Stent With Improved Deployment Characteristics
AssigneeMicroVention, Inc.
InventorsHussain Rangwala, Tao Lin
Life of this patent
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Abstract
Described herein is a braided stent having have a plurality of different segments that can reduce or eliminate foreshortening and allow the proximal end of the stent to more reliably open when deployed in a curved vessel. The segments can be connected together by interlocking loops positioned at the end of each segment and can be formed of one or more radially progressing wave patterns.
Claims17
A woven stent, comprising:
- a wire having a first end and a second end;
- the wire being heat-set to form the following shape:
- a first tubular stent segment having a first plurality of waves that are circumferentially oriented and extend between a first end of the first tubular stent segment and a second end of the first tubular stent segment to form proximally facing peaks and distally facing peaks;
- a second tubular stent segment having a second plurality of waves that are circumferentially oriented and extend between a first end of the second tubular stent segment and a second end of the second tubular stent segment to form proximally facing peaks and distally facing peaks;
- and,
- an elongated connecting portion that connects the first tubular stent segment with the second tubular stent segment.
3 more elements
A method of creating a woven stent, comprising:
- positioning a wire circumferentially around a mandrel;
- the wire being bent around alternating mandrel posts in a first row and a second row so as to create a first stent segment having a wave pattern;
- and,
- positioning the wire circumferentially around the mandrel;
- the wire being bent around alternating mandrel posts in a third row and a second row so as to create a second stent segment having a wave pattern.
2 more elements
A method of delivering a woven stent, comprising:
- advancing within a patient a delivery catheter containing the woven stent in a radially compressed configuration;
- the stent being woven from at least one wire;
- and,
- radially expanding the woven stent having a plurality of stent segments that each of a plurality of radially woven peaks to a radially expanded configuration with a patient;
- wherein the woven stent achieves a length in its radially expanded configuration that foreshortens as a percentage of a length in its radially compressed configuration by a ratio of:
- the height of one of the plurality of radially woven peaks when compressed minus the height of the radially woven peaks when expanded divided by the height of the radially woven peaks when compressed.
3 more elements
Dependencies are inferred from the claim text.