Flexible stent-graft
AssigneeAnson Medical Limited
InventorsAmie Smirthwaite, Duncan Keeble, Peter Philips
Life of this patent
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Abstract
A stent graft is provided which has two stent sections having different functions on, for example, a tubular graft. One stent section preferably comprises a plurality of circumferential reinforcing hoops and the other a Z-stent. The two sections are preferably separated by a spacer section and the tubular graft preferably increases in diameter from the Z-stent section to the hooped section. This enables the stent graft to be compressed radially so that it can be inserted in a catheter for later delivery to a body lumen.
Claims20
A stent graft for implantation in a body lumen comprising
- a tubular graft having a first stent section comprising reinforcing material formed into a first pattern and a second stent section comprising reinforcing material formed into a second pattern, the first pattern being different from the second pattern,
- the tubular graft having a first diameter in the region of the first stent section and a second diameter in the region of the first stent section,
- wherein the first diameter is different from the second diameter.
A method comprising:
- a. radially compressing a stent graft having:
- (1) a first stent section having a first diameter, and including reinforcing material formed into a first pattern, and
- (2) a second stent section having a second diameter and including reinforcing material formed into a second pattern, wherein the second diameter is different from the first diameter and the second pattern is different from the first pattern;
- b. inserting the compressed stent graft into a catheter having an internal diameter which is less than the diameter of the first stent section of the stent graft.
A stent graft for implantation in a body lumen comprising two or more tubular stent sections connected in series along a common axis, wherein:
- a. at least one of the stent sections is radially expandable from a compressed state, wherein the stent section has decreased diameter when in its compressed state;
- and
- b. each stent section includes patterned reinforcing material,
- wherein the stent sections have both:
- (1) different diameters, and
- (2) different reinforcing material patterns,
- when the stent sections are fully expanded.
Dependencies are inferred from the claim text.