Implantable medical device with reduced migration capabilities
First Claim
Patent Images
1. A stent comprising:
- a first covered region formed of one or more interwoven filaments and a covering; and
a second uncovered region adjacent the first covered region, wherein the second uncovered region includes a knitted filament;
wherein a first end of the knitted filament is attached to the first covered region;
wherein a second end of the second uncovered region, opposite the first end, includes a free end of the knitted filament;
wherein pulling the free end results in unraveling of the knitted filament to remove both the first covered region and the second uncovered region of the stent while the first end of the knitted stent remains attached to the first covered region.
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Abstract
Medical devices and methods for making and using a medical device are disclosed. An example medical device may include a stent that comprises a first covered region formed of one or more interwoven filaments and a covering. The stent may also comprise a second uncovered region adjacent the first covered region. The second uncovered region may include a knitted filament. A first end of the knitted filament may be attached to the first covered region. The knitted filament is configured to be unraveled to remove both the first covered region and the second uncovered region of the stent while the first end of the knitted stent remains attached to the first covered region.
39 Citations
18 Claims
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1. A stent comprising:
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a first covered region formed of one or more interwoven filaments and a covering; and a second uncovered region adjacent the first covered region, wherein the second uncovered region includes a knitted filament; wherein a first end of the knitted filament is attached to the first covered region; wherein a second end of the second uncovered region, opposite the first end, includes a free end of the knitted filament; wherein pulling the free end results in unraveling of the knitted filament to remove both the first covered region and the second uncovered region of the stent while the first end of the knitted stent remains attached to the first covered region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A stent comprising:
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a first covered region formed of one or more interwoven filaments and a covering; and a second uncovered region adjacent the first covered region, wherein the second uncovered region includes a knitted filament; wherein a first end of the knitted filament is attached to the first covered region; wherein the knitted filament is configured to be unraveled to remove both the first covered region and the second uncovered region of the stent while the first end of the knitted stent remains attached to the first covered region; wherein the knitted filament of the second region includes a second end, and wherein the second end is attached to an intermediate portion of the knitted filament at a second attachment point; wherein the second attachment point is configured to separate from the intermediate portion of the knitted filament; wherein separating the attachment point from the intermediate portion of the knitted filament permits the unraveling of the second uncovered region of the stent.
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15. A stent, comprising:
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a tubular member having a first end and a second end and a lumen extending therein; a first covered portion disposed along the first end of the tubular member, the first covered portion including one or more interwoven filaments forming a tubular structure; a second uncovered portion disposed along the second end of the tubular member;
the second uncovered portion adjacent to and attached to the first covered portion;wherein the first covered portion is configured to prevent tissue ingrowth along the first covered portion; wherein the second uncovered portion is configured to permit tissue ingrowth therein so as to reduce migration of the stent; wherein the second uncovered portion includes a knitted filament configured to be unraveled to remove both the first covered portion and the second uncovered portion of the stent while the knitted filament of the second uncovered portion remains attached to the tubular structure of the first covered portion; and wherein the knitted filament of the second uncovered portion is attached to the first covered portion at an attachment point configured to terminate the unraveling of the knitted filament beyond the attachment point. - View Dependent Claims (16, 17, 18)
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Specification