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US 8,998,972 B2Granted
Flexible stent-graft
AssigneeAnson Medical Limited
InventorsAmie Smirthwaite, Duncan Keeble, Peter William 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.
Claims29
A stent graft for implantation in a body lumen comprising
- a tubular graft;
- a first stent section disposed on the tubular graft, the first stent section comprising reinforcing material formed into a first pattern;
- a second stent section disposed on the tubular graft, the second stent section comprising reinforcing material formed into a second pattern, the first pattern being different from the second pattern,
- the reinforcing material of the first and second stent sections being different from the material of the graft,
- wherein the reinforcing material of the first pattern is disposed on the tubular graft in a pattern which extends along and oscillates repeatedly across opposing sides of a line which is parallel to the longitudinal axis of the tubular graft,
- and wherein the reinforcing material of the second pattern includes circumferential hoops orbiting the longitudinal axis of the tubular graft and extending circumferentially about the circumference of the tubular graft, each hoop being separate and spaced from each other hoop,
- the tubular graft having a first diameter in the region of the first stent section and a second diameter in the region of the second stent section,
- wherein the first diameter is different from the second diameter.
5 more elements
A method comprising:
- a. radially compressing a stent graft having:
- (1) a tubular graft,
- (2) a first stent section disposed on the tubular graft, the first stent section having a first diameter, and including reinforcing material formed into a first pattern, the first pattern including a continuous length of reinforcing material which is disposed around the first stent section in a pattern which extends along and oscillates repeatedly across a line which is parallel to the longitudinal axis of the first stent section, and
- (3) a second stent section disposed on the tubular graft, the second stent section having a second diameter and including reinforcing material formed into a second pattern, the second pattern including at least one circumferential hoop of reinforcing material which oscillates repeatedly across a line running circumferentially around the longitudinal axis of the second stent section,
- and wherein:
- i. the reinforcing material of the first and second stent sections is different from the material of the graft,
- ii. the first stent section does not include reinforcing material formed into a pattern oscillating repeatedly across a line running circumferentially around the longitudinal axis, and
- iii. the second stent section does not include reinforcing material formed into a pattern oscillating repeatedly across a line running parallel to the longitudinal axis;
- 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.
6 more elements
A stent graft for implantation in a body lumen comprising
- a tubular graft;
- a first stent section defined along the tubular graft, the first stent section including reinforcing material formed into a first pattern;
- a second stent section defined along the tubular graft, the second stent section including reinforcing material formed into a second pattern,
- the reinforcing material of the first and second stent sections being different from the material of the graft,
- wherein the first pattern includes a continuous length of reinforcing material which is disposed around the tubular graft in a pattern which extends along and circumferentially oscillates across opposing sides of a line which is parallel to the longitudinal axis of the tubular graft,
- and wherein the second pattern includes at least one circumferential hoop of reinforcing material orbiting the longitudinal axis of the tubular graft, and which extends along and oscillates across opposing sides of a line running around the circumference of the tubular graft,
- and wherein the first stent section does not include reinforcing material formed into a pattern oscillating across opposing sides of a line running around the circumference of the tubular graft, and the second stent section does not include reinforcing material formed into a pattern oscillating across opposing sides of a line running parallel to the longitudinal axis.
4 more elements
Dependencies are inferred from the claim text.