US5755771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandable stent and method of delivery of same
Assignee: Divysio Solutions Ltd
•
Filing: 1995-11-03
•
Granted: 1998-05-26
•
Expires: 2015-11-03
Abstract
Abstract An expandable stent comprising a proximal end and a distal end in communication with one another, a tubular wall disposed between the proximal end and the distal end, the tubular wall having a longitudinal axis and a porous surface defined by a plurality intersecting members arranged to define a first repeating pattern which is a polygon having a pair of side walls substantially parallel to the longitudinal axis, a first concave-shaped wall and a second convex-shaped wall connecting the side walls, the first wall and the second wall being equidistant along an axis which is parallel to the longitudinal axis, the stent being expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the interior of the stent. A particularly preferred form of the stent is an expandable bifurcated stent comprising a proximal end and a distal end in communication with one another, the proximal end comprising a primary passageway and the distal end comprising a pair of secondary passageways, the stent being expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the stent. A method of delivering the bifurcated stent to a target body passageway is also provided.
Inventors
- 👤 Ian M. Penn
- 👤 Donald R. Ricci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:20
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2/95; A61F2/954; A61F2/958; A61L; A61L27/00; A61L27/50; A61F2/02; A61F2/04; A61F2/06; A61F2002/065; A61F2002/828; A61F2002/91525; A61F2002/91533; A61F2002/9155; A61F2002/91575
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
140 words
An expandable stent comprising a proximal end and a distal end in communication with one another, a tubular wall disposed between the proximal end and the distal end, the tubular wall having a longitudinal axis and a porous surface defined by a plurality of intersecting members arranged to define a first repeating pattern which, in two dimensions, is a polygon having a pair of side walls substantially parallel to the longitudinal axis, a first concave-shaped wall and a second convex-shaped wall connecting the side walls, at least one of the first concave-shaped wall and the second convex-shaped wall having a flat apex in the form of a segment which is normal to the longitudinal axis, the stent being expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the stent.
Claim 2
Dependent Claim
140 words
An expandable stent comprising a proximal end and a distal end in communication with one another, a tubular wall disposed between the proximal end and the distal end, the tubular wall having a longitudinal axis and a porous surface defined by a plurality of intersecting members arranged to define a first repeating pattern which, in two dimensions, is a polygon having a pair of side walls substantially parallel to the longitudinal axis, a first concave-shaped wall and a second convex-shaped wall connecting the side walls, at least one of the first concave-shaped wall and the second convex-shaped wall having a flat apex in the form of a segment which is normal to the longitudinal axis, the stent being expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the stent.
Claim 3
Dependent Claim
30 words
The stent defined in claim 1, in the form of a bifurcated stent, the proximal end comprising a primary passageway and the distal end comprising a pair of secondary passageways.
Claim 4
Dependent Claim
25 words
The stent defined in claim 2, wherein the primary passageway is elongate and has a longitudinal axis which substantially bisects the pair of secondary passageways.
Claim 5
Dependent Claim
14 words
The stent defined in claim 2, wherein the primary passageway comprises said porous surface.
Claim 6
Dependent Claim
34 words
The stent defined in claim 2, wherein at least one of the secondary passageways is elongate and has a longitudinal axis which intersects the longitudinal axis of the primary passageway at an acute angle.
Claim 7
Dependent Claim
17 words
The stent defined in claim 5, wherein the at least one secondary passageway comprises said porous surface.
Claim 8
Dependent Claim
22 words
The stent defined in claim 2, wherein the primary passageway is connected to the each of the secondary passageways at an intersection.
Claim 9
Dependent Claim
18 words
The stent defined in claim 7, wherein the intersection reinforced with respect to the remainder of the stent.
Claim 10
Dependent Claim
11 words
The stent defined in claim 8, wherein the intersection is porous.
Claim 11
Dependent Claim
19 words
The stent defined in claim 9, wherein the porosity of the intersection is defined by a plurality intersecting members.
Claim 12
Dependent Claim
15 words
The stent defined in claim 10, wherein the intersecting members define a third repeating pattern.
Claim 13
Dependent Claim
81 words
The stent defined in claim 11, wherein the third repeating pattern is a polygon having a pair of side walls substantially parallel to the longitudinal axis of the primary passageway, a first concave-shaped wall and a second convex-shaped wall connecting the side walls, the first wall and the second wall being equidistant along an axis which is parallel to the longitudinal axis of the primary passageway, and a reinforcing bar disposed between and substantially parallel to the pair of side walls.
Claim 14
Dependent Claim
20 words
The stent defined in claim 12, wherein the reinforcing bar is disposed substantially equidistant from each of the side walls.
Claim 15
Dependent Claim
15 words
The stent defined in claim 2, wherein the primary passageway has a substantially circular cross-section.
Claim 16
Dependent Claim
17 words
The stent defined in claim 2, wherein each of the secondary passageways has a substantially circular cross-section.
Claim 17
Dependent Claim
29 words
The stent defined in claim 2, wherein the cross-sectional area of the primary passageway is substantially the same as the sum of the cross-sectional areas of each secondary passageway.
Claim 18
Dependent Claim
20 words
The stent defined in claim 2, wherein the distal end is flexible with respect to the remainder of the stent.
Claim 19
Dependent Claim
20 words
The stent defined in claim 2, wherein the proximal end is flexible with respect to the remainder of the stent.
Claim 20
Dependent Claim
23 words
The stent defined in claim 2, wherein the length of each of the primary passageway and the second passageways is substantially the same.
Claim 21
Dependent Claim
15 words
The stent defined in claim 1, wherein the first concave-shaped wall comprises the flat apex.
Claim 22
Dependent Claim
15 words
The stent defined in claim 1, wherein the second convex-shaped wall comprises the flat apex.
Claim 23
Dependent Claim
22 words
The stent defined in claim 1, wherein each of the first concave-shaped wall and the second convex-shaped wall comprises a flat apex.
Claim 24
Dependent Claim
25 words
The stent defined in claim 22, wherein the flat apex in the first concave-shaped wall and the second convex-shaped wall are substantially the same length.
Claim 25
Dependent Claim
15 words
The stent defined in claim 1, wherein the intersecting members define a second repeating pattern.
Claim 26
Dependent Claim
31 words
The stent defined in claim 24, wherein the second repeating pattern is a substantial mirror image of the first repeating pattern taken along a line substantially normal to the longitudinal axis.
Claim 27
Dependent Claim
14 words
The stent defined in claim 1, wherein the first concave-shaped wall comprises three segments.
Claim 28
Dependent Claim
14 words
The stent defined in claim 1, wherein the second convex-shaped wall comprises three segments.
Claim 29
Dependent Claim
21 words
The stent defined in claim 1, wherein each of the first concave-shaped wall and the second convex-shaped wall comprise three segments.
Claim 30
Dependent Claim
12 words
The stent defined in claim 1, further comprising a coating material thereon.
Claim 31
Dependent Claim
25 words
The stent defined in claim 29, wherein the coating material is selected from the group comprising biologically inert material, a medicinal composition and mixtures thereof.
Claim 32
Dependent Claim
157 words
An expandable stent comprising a proximal end and a distal end in communication with one another, a tubular wall disposed between the proximal end and the distal end, the tubular wall having a longitudinal axis and a porous surface defined by a plurality of intersecting members arranged to define a first repeating pattern which is a polygon having a pair of side walls substantially parallel to the longitudinal axis, a first concave-shaped wall and a second convex-shaped wall connecting the side walls, the first wall and the second wall being equidistant along an axis which is parallel to the longitudinal axis, the stent being expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the stent wherein at least one of the first concave-shaped wall and the second convex-shaped wall have a flat apex in the form of a segment which is normal to the longitudinal axis.
Claim 33
Dependent Claim
157 words
An expandable stent comprising a proximal end and a distal end in communication with one another, a tubular wall disposed between the proximal end and the distal end, the tubular wall having a longitudinal axis and a porous surface defined by a plurality of intersecting members arranged to define a first repeating pattern which is a polygon having a pair of side walls substantially parallel to the longitudinal axis, a first concave-shaped wall and a second convex-shaped wall connecting the side walls, the first wall and the second wall being equidistant along an axis which is parallel to the longitudinal axis, the stent being expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the stent wherein at least one of the first concave-shaped wall and the second convex-shaped wall have a flat apex in the form of a segment which is normal to the longitudinal axis.
Claim 34
Dependent Claim
20 words
The stent defined in claim 31, wherein each of the first wall and the second wall comprises a flat apex.
Claim 35
Dependent Claim
15 words
The stent defined in claim 31, wherein the intersecting members define a second repeating pattern.
Claim 36
Dependent Claim
31 words
The stent defined in claim 33, wherein the second repeating pattern is a substantial mirror image of the first repeating pattern taken along a line substantially normal to the longitudinal axis.
Claim 37
Dependent Claim
117 words
A radially expandable stent comprising a proximal end and a distal end in communication with one another, a tubular wall disposed between the proximal end and the distal end, the tubular wall having a longitudinal axis and a porous surface having a first repeating pattern comprising a polygonal opening defined by a plurality of intersecting members, the polygonal opening, in two dimensions, comprising a pair of side walls substantially parallel to the longitudinal axis, a first concave-shaped wall and a second convex-shaped wall connecting the side walls, at least one of the first concave-shaped wall and the second convex-shaped wall having a flat apex in the form of a segment which is normal to the longitudinal axis.
Claim 38
Dependent Claim
117 words
A radially expandable stent comprising a proximal end and a distal end in communication with one another, a tubular wall disposed between the proximal end and the distal end, the tubular wall having a longitudinal axis and a porous surface having a first repeating pattern comprising a polygonal opening defined by a plurality of intersecting members, the polygonal opening, in two dimensions, comprising a pair of side walls substantially parallel to the longitudinal axis, a first concave-shaped wall and a second convex-shaped wall connecting the side walls, at least one of the first concave-shaped wall and the second convex-shaped wall having a flat apex in the form of a segment which is normal to the longitudinal axis.
Claim 39
Dependent Claim
15 words
The stent defined in claim 35, wherein the first concave-shaped wall comprises the flat apex.
Claim 40
Dependent Claim
15 words
The stent defined in claim 35, wherein the second convex-shaped wall comprises the flat apex.
Claim 41
Dependent Claim
22 words
The stent defined in claim 35, wherein each of the first concave-shaped wall and the second convex-shaped wall comprises a flat apex.
Claim 42
Dependent Claim
25 words
The stent defined in claim 38, wherein the flat apex in the first concave-shaped wall and the second convex-shaped wall are substantially the same length.
Claim 43
Dependent Claim
15 words
The stent defined in claim 35, wherein the intersecting members define a second repeating pattern.
Claim 44
Dependent Claim
31 words
The stent defined in claim 40, wherein the second repeating pattern is a substantial mirror image of the first repeating pattern taken along a line substantially normal to the longitudinal axis.
Claim 45
Dependent Claim
14 words
The stent defined in claim 35, wherein the first concave-shaped wall comprises three segments.
Claim 46
Dependent Claim
14 words
The stent defined in claim 35, wherein the second convex-shaped wall comprises three segments.
Claim 47
Dependent Claim
21 words
The stent defined in claim 35, wherein each of the first concave-shaped wall and the second convex-shaped wall comprise three segments.
Claim 48
Dependent Claim
12 words
The stent defined in claim 35, further comprising a coating material thereon.
Claim 49
Dependent Claim
25 words
The stent defined in claim 45, wherein the coating material is selected from the group comprising biologically inert material, a medicinal composition and mixtures thereof.
References Cited (Backward Citations)
US3993078A
Cited
US4733665B1
Cited
US4733665A
Cited
US4739762A
Cited
US5102417A
Cited
US4739762B1
Cited
US4733665C2
Cited
US4800882A
Cited
US5443500A
Cited
US4994071A
Cited
US5037392A
Cited
US5522880A
Cited
US5139480A
Cited
US5161547A
Cited
EP0566807A1
Cited
US5197978A
Cited
US5197978B1
Cited
FR2678508A1
Cited
US5514154A
Cited
US5421955B1
Cited
US5421955A
Cited
US5316023A
Cited
US5282823A
Cited
US5395390A
Cited
US5540712A
Cited
US5342387A
Cited
US5496365A
Cited
US5634941A
Cited
WO1994012136A1
Cited
US5458615A
Cited
WO1995009584A1
Cited
US5643312A
Cited
EP0669114B1
Cited
US5449373A
Cited
WO1995026695A2
Cited
WO1995031945A1
Cited
WO1996003092A1
Cited
US5575817A
Cited
WO1997004721A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |