US20090216314A1
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US
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Balloon-Expandable, Self-Expanding, Vascular Prosthesis Connecting Stent
Assignee: Edwards Lifesciences Cardiaq LLC
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Filing: 2006-11-09
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Granted: —
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Expires: 2026-11-09
Abstract
Abstract An expandable vascular stent includes an m×n array of ovals formed in a cylinder, m being the number of columns of ovals in the circumferential direction and n being the number of rows of ovals in the axial direction, and a plurality of prongs extending inwardly from the outer ends of respective ovals in rows 1 and n of the m×n array, and being arranged in facing pairs extending from axially-aligned ovals. The cylinder is expandable from an initial diameter to a pre-determined final diameter, wherein an increase in the diameter of the stent results in a substantial decrease in the length of the stent. The tube and the prongs can be made of surgical stainless steel, the tube being expandable using an angioplasty balloon; or the tube and the prongs can be made of a memory metal and the tube is self-expanding.
Inventors
- 👤 Arshad Quadri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:18
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/02; A61F2/24; A61F2/2412; A61F2/2418; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2/848; A61F2002/8483; A61F2002/8486; A61F2002/91533; A61F2002/91541; A61F2002/9155; A61F2002/91558; A61F2220/00; A61F2220/0008; A61F2220/0016; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0013; A61F2230/0028; A61F2230/0054
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
143 words
1 . An expandable vascular stent comprising an m×n array of ovals formed in a cylinder having a diameter, a circumference, an axis, and a length in the direction of the axis, where m is the number of columns of ovals in the circumferential direction and n is the number of rows of ovals in the axial direction, the ovals having a short axis and a long axis, the short axis of the ovals extending in the circumferential direction and the long axis of the ovals extending in the axial direction, the cylinder being expandable from an initial diameter to a pre-determined final diameter, wherein an increase in the diameter of the stent resulting in decrease in the length of the stent; and connecting means located at rows 1 and n of the m×n array for connecting the cylinder to a surrounding body.
Claim 2
Dependent Claim
143 words
1 . An expandable vascular stent comprising an m×n array of ovals formed in a cylinder having a diameter, a circumference, an axis, and a length in the direction of the axis, where m is the number of columns of ovals in the circumferential direction and n is the number of rows of ovals in the axial direction, the ovals having a short axis and a long axis, the short axis of the ovals extending in the circumferential direction and the long axis of the ovals extending in the axial direction, the cylinder being expandable from an initial diameter to a pre-determined final diameter, wherein an increase in the diameter of the stent resulting in decrease in the length of the stent; and connecting means located at rows 1 and n of the m×n array for connecting the cylinder to a surrounding body.
Claim 3
Dependent Claim
55 words
2 . The expandable vascular stent of claim 1 , wherein the connecting means comprise a plurality of prongs extending inwardly from the outer ends of respective ovals in rows 1 and n of the m×n array, the prongs being arranged in facing pairs extending from ovals that are in alignment in the axial direction.
Claim 4
Dependent Claim
34 words
3 . The expandable vascular stent of claim 2 , wherein the prongs are approximately collinear in ovals having a common long axis, and are approximately parallel in ovals having a common short axis.
Claim 5
Dependent Claim
37 words
4 . The expandable vascular stent of claim 1 , further comprising circumferential connectors connecting adjacent ovals to each other in the circumferential direction and axial connectors connecting adjacent ovals to each other in the axial direction.
Claim 6
Dependent Claim
35 words
5 . The expandable vascular stent of claim 4 , wherein the circumferential connectors and the axial connectors are positioned between the ovals coincident with the common short and long axes of the ovals, respectively.
Claim 7
Dependent Claim
26 words
6 . The expandable vascular stent of claim 2 , wherein prior to expansion of the cylinder, the prongs are pre-bent to have a hook configuration.
Claim 8
Dependent Claim
42 words
7 . The expandable vascular stent of claim 2 , wherein prior to expansion of the cylinder, the prongs substantially conform to the shape of the cylinder and after expansion, the prongs extend outwardly, from the cylinder to engage the surrounding body.
Claim 9
Dependent Claim
42 words
8 . The expandable vascular stent of claim 1 where in on continued expansion due to the foreshortening of the ovals thus the stent the tissue in between the prongs form a stable connection to the desired tissue at the desired location.
Claim 10
Dependent Claim
31 words
9 . The expandable vascular stent of claim 1 , wherein the cylinder and the prongs are made of surgical stainless steel and the tube is expanded using an angioplasty balloon.
Claim 11
Dependent Claim
27 words
10 . The expandable vascular stent of claim 1 , wherein the cylinder and the prongs are made of a memory metal and the tube is self-expanding.
Claim 12
Dependent Claim
20 words
11 . The expandable vascular stent of claim 1 , further comprising a percutaneous heart valve seated inside the cylinder.
Claim 13
Dependent Claim
29 words
12 . The expandable vascular stent of claim 4 , further comprising prongs extending from at least some of the circumferential connectors between ovals in rows 1 and n.
Claim 14
Dependent Claim
44 words
13 . The expandable vascular stent of claim 2 , wherein each prong include a spine extending the length of the long axis of the oval and a furcation on either side of the spine at a location between the ends of the spine.
Claim 15
Dependent Claim
65 words
14 . The expandable vascular stent of claim 13 , wherein the spine has end hinge points at the ends thereof and an intermediate hinge point at the base of the furcations, and wherein the amount by which the ovals are foreshortened and the angle of the furcations upon expansion depends on the location of the intermediate hinge point relative to the end hinge points.
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