Vascular prosthesis connecting stent
First Claim
1. An expandable vascular stent comprisingan 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 results in a decrease in the length of the stent; and
a plurality of prongs located at rows 1 and n of the m×
n array for connecting the cylinder to a surrounding body, a first plurality of prongs located at row 1 extending generally radially outwardly from the ovals and generally toward a second plurality of prongs located at row n, and the second plurality of prongs located at row n extend generally radially outwardly from the ovals and generally toward the first plurality of prongs at row 1;
wherein when the stent is expanded to the final diameter, each of the prongs is bent at or adjacent the ovals so that an elongate first portion along the length of the prong extends radially outwardly, and each of the prongs is further bent radially inwardly relative the first portion so that an elongate second portion along the length of the prong is spaced radially outwardly from the ovals and extends in a generally axial direction.
4 Assignments
0 Petitions
Accused Products
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.
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Citations
45 Claims
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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 results in a decrease in the length of the stent; and
a plurality of prongs located at rows 1 and n of the m×
n array for connecting the cylinder to a surrounding body, a first plurality of prongs located at row 1 extending generally radially outwardly from the ovals and generally toward a second plurality of prongs located at row n, and the second plurality of prongs located at row n extend generally radially outwardly from the ovals and generally toward the first plurality of prongs at row 1;wherein when the stent is expanded to the final diameter, each of the prongs is bent at or adjacent the ovals so that an elongate first portion along the length of the prong extends radially outwardly, and each of the prongs is further bent radially inwardly relative the first portion so that an elongate second portion along the length of the prong is spaced radially outwardly from the ovals and extends in a generally axial direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- 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 results in a decrease in the length of the stent; and
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13. An expandable vascular stent comprising:
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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 results in a decrease in the length of the stent; anda plurality of prongs located at rows 1 and n of the m×
n array for connecting the cylinder to a surrounding body, a first plurality of prongs located at row 1 extending generally radially outwardly from the ovals and generally toward a second plurality of prongs located at row n, and the second plurality of prongs located at row n extend generally radially outwardly from the ovals and generally toward the first plurality of prongs at row 1;wherein each prong includes 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. - View Dependent Claims (14)
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15. A support for a vascular prosthesis, comprising:
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at least one row of interconnected foreshortening cells extending circumferentially around a longitudinal axis of the support, each of the foreshortening cells having a circumferential axis in the circumferential direction and a long axis in the longitudinal direction, each foreshortening cell having a proximal end and a distal end, the support being expandable from a compacted diameter to an expanded diameter, the foreshortening cells being configured so that when the support is expanded from the compacted diameter to the expanded diameter, the circumferential axis of each foreshortening cell increases while simultaneously the long axis of each foreshortening cell decreases; a plurality of elongate distal prongs extending from the distal ends of foreshortening cells in one of the at least one row of interconnected foreshortening cells, the elongate distal prongs extend generally radially outwardly from the foreshortening cells and generally axially toward the proximal end of the associated foreshortening cells, each distal prong having a first and a second portion along its length, the prong being bent between the first and second portions so that the second portion extends in a more axially-directed direction than the first portion; and a plurality of elongate proximal prongs extending from the proximal ends of foreshortening cells in one of the at least one row of interconnected foreshortening cells, the elongate proximal prongs extending generally radially outwardly from the foreshortening cells and generally axially toward the distal end of the associated foreshortening cells so that a space is defined between tips of the proximal and distal prongs, each proximal prong having a first and a second portion along its length, the prong being bent between the first and second portions so that the second portion extends in a more axially-directed direction than the first portion; wherein when the support is radially expanded a longitudinal distance between the tips of the proximal and distal prongs decreases. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A support for a vascular prosthesis, comprising:
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at least one row of interconnected foreshortening cells extending circumferentially around a longitudinal axis of the support, each of the foreshortening cells having a circumferential axis in the circumferential direction and a long axis in the longitudinal direction, the support having a proximal end and a distal end and being expandable from a compacted diameter to an expanded diameter, the foreshortening cells being configured so that when the support is expanded from the compacted diameter to the expanded diameter, the circumferential axis of each foreshortening cell increases while simultaneously the long axis of each foreshortening cell decreases; an elongate distal prong extending from a foreshortening cell in one of the at least one row of interconnected foreshortening cells, the elongate distal prong extending generally radially outwardly from the foreshortening cell and generally axially toward the proximal end of the support; and an elongate proximal prong extending from the support proximal of the distal prong, the elongate proximal prong extending generally radially outwardly relative to the foreshortening cells of the support and generally axially toward the distal end of the support so that a space is defined between tips of the proximal and distal prongs and the distal prong tip is distal of the proximal prong tip; wherein the prongs are bent when the support is radially expanded so that a first portion of each prong, which first portion is spaced from the prong tip, extends outwardly relative to the longitudinal axis of the support, and the prongs are further bent so that a second portion of the prong adjacent the prong tip extends inwardly relative to the outwardly-bent first portion; and wherein when the support is radially expanded a longitudinal distance between the tips of the proximal and distal prongs decreases. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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36. A support for a vascular prosthesis, comprising:
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a support body comprising an array of interconnected cells extending circumferentially around a longitudinal axis of the support, the support body having a proximal end and a distal end and being radially expandable from a compacted state to an expanded state; an elongate distal prong extending from the support body, the elongate distal prong extending generally toward the proximal end of the support body so that a tip of the distal prong is longitudinally proximal of a base of the distal prong; an elongate proximal prong extending from the support body, the elongate proximal prong extending generally toward the distal end of the support body so that a tip of the proximal prong is longitudinally distal of a base of the proximal prong and the tip of the proximal prong is proximal of the tip of the distal prong; the prongs bent when in the expanded state so that a first portion of each prong adjacent the prongs base is bent outwardly relative to the longitudinal axis of the support and the prongs are further bent so that a second portion of the prong adjacent the prong tip is directed inwardly relative to the outwardly-bent first portion; the support body comprising a foreshortening portion between at least the tips of the distal and proximal prongs, the foreshortening portion configured to longitudinally shorten as the support body is radially expanded from the compacted state to the expanded state; wherein when the support body is radially expanded from the compacted state to the expanded state a longitudinal distance between the tips of the proximal and distal prongs decreases; and wherein when the support body is in the expanded state the distal prong extends generally radially outwardly from the support body and toward the proximal end of the support body, and the proximal prong extends generally radially outwardly from the support body and toward the distal end of the support body. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification