Implantable medical device with reduced migration capabilities
AssigneeBoston Scientific Scimed, Inc.
InventorsMartyn G. Folan, Thomas M. Keating
Life of this patent
Estimating the term…
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.
Claims20
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 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.
A stent, comprising:
- 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;
- 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;
- and
- 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 second uncovered portion remains attached to the first covered portion.
A method for removing an implantable medical device, the method comprising:
- engaging a free end of a knitted filament with a removal device, the knitted filament defining a portion of a stent, the stent being positioned within a body lumen;
- wherein the stent includes:
- a first covered portion;
- a second uncovered portion positioned adjacent to and attached to the first covered portion, wherein the second uncovered portion includes the knitted filament;
- proximally retracting the free end of the knitted filament to unravel the second uncovered portion while the first covered portion remains attached to the second uncovered portion;
- and
- further proximally retracting the unraveled knitted filament to remove the covered portion from the body lumen.
Dependencies are inferred from the claim text.