US6375676B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-expanding stent with enhanced delivery precision and stent delivery system
Assignee: Abbott Cardiovascular Systems Inc
•
Filing: 1999-05-17
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Granted: 2002-04-23
•
Expires: 2019-05-17
Abstract
Abstract The invention is directed to a self-expanding stent for implantation into a body lumen, such as an artery. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common longitudinal stent axis and interconnected by a plurality of interconnecting members placed on the stent in a collinear arrangement such as to create at least one continuous spine which extends along the length of the stent. The invention is also directed to a stent delivery system for implantation of a stent in a vessel which includes an outer tubular member having a restraining sheath and an inner tubular member having a distal end which has a compressed stent mounted thereto. The proximal end of the inner tubular member is connected to a housing assembly which prevents the inner tubular member from moving when the outer tubular member is retracted to deploy the stent. The proximal end of the outer tubular member is attached to a pull-back handle which is slidably mounted on the base of the housing assembly. When the pull-back handle is retracted, the restraining sheath is retracted to deploy the sheath, while the inner tubular member remains stationary.
Inventors
- 👤 Daniel L. Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:52
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2/95; A61F2/9517; A61F2002/91516; A61F2002/91533; A61F2002/9155; A61F2002/91575; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0013
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
175 words
A self-expanding stent having longitudinal flexibility for implanting in a body lumen and being expandable from a compressed condition to an expanded condition, comprising: a plurality of adjacent cylindrical elements made from a self-expanding material, each cylindrical element having a circumference extending around a longitudinal stent axis and being substantially independently expandable in the radial direction, wherein the plurality of adjacent cylindrical elements are arranged in alignment along the longitudinal stent axis and form a generally tubular member, the cylindrical elements are formed in a generally serpentine wave pattern and contain alternating valley portions and peak portions with a space formed between each valley and peak portion, the peak portions of the cylindrical element are adapted to extend within the spaces formed on an adjacent cylindrical element; and a plurality of interconnecting members extending between the adjacent cylindrical elements and connecting the adjacent cylindrical elements to one another, wherein some of the interconnecting members are aligned collinearly with respect to each other to form a continuous spine which extends along the length of the stent.
Claim 2
Dependent Claim
175 words
A self-expanding stent having longitudinal flexibility for implanting in a body lumen and being expandable from a compressed condition to an expanded condition, comprising: a plurality of adjacent cylindrical elements made from a self-expanding material, each cylindrical element having a circumference extending around a longitudinal stent axis and being substantially independently expandable in the radial direction, wherein the plurality of adjacent cylindrical elements are arranged in alignment along the longitudinal stent axis and form a generally tubular member, the cylindrical elements are formed in a generally serpentine wave pattern and contain alternating valley portions and peak portions with a space formed between each valley and peak portion, the peak portions of the cylindrical element are adapted to extend within the spaces formed on an adjacent cylindrical element; and a plurality of interconnecting members extending between the adjacent cylindrical elements and connecting the adjacent cylindrical elements to one another, wherein some of the interconnecting members are aligned collinearly with respect to each other to form a continuous spine which extends along the length of the stent.
Claim 3
Dependent Claim
34 words
The stent of claim 1 , wherein the cylindrical elements are formed in a generally serpentine wave pattern transverse to the longitudinal axis and contain alternating valley portions, peak portions, and double curved portions.
Claim 4
Dependent Claim
21 words
The stent of claim 2 , wherein the interconnecting members are connected at the double curved portions of each cylindrically element.
Claim 5
Dependent Claim
26 words
The stent of claim 1 , wherein the plurality of interconnecting members form a plurality of continuous spines which extend along the length of the stent.
Claim 6
Dependent Claim
25 words
The stent of claim 3 , wherein the plurality of interconnecting members form a plurality of spines which extend along the length of the stent.
Claim 7
Dependent Claim
22 words
The stent of claim 1 , wherein said stent is formed of a biocompatible material such as super elastic nickel titanium alloy.
Claim 8
Dependent Claim
17 words
The stent of claim 1 , wherein the stent is formed from a single piece of tubing.
Claim 9
Dependent Claim
144 words
A flexible intravascular stent for implanting in a body lumen, comprising: a plurality of cylindrical elements interconnected to form the stent, each cylindrical element arranged in alignment along a longitudinal stent axis and having a first delivery diameter and a second expanded diameter; each cylindrical element being formed in a generally serpentine wave pattern having a plurality of alternating valley portions and peak portions with a space formed between each alternating valley portion and peak portion, wherein peak portions of the cylindrical elements are adapted to extend within the spaces formed on an adjacent cylindrical element; and a plurality of interconnecting members extending between the adjacent cylindrical elements and connecting the adjacent cylindrical elements to one another, wherein some of the interconnecting members are aligned collinearly with respect to each other to form a continuous spine which extends along the length of the stent.
Claim 10
Dependent Claim
144 words
A flexible intravascular stent for implanting in a body lumen, comprising: a plurality of cylindrical elements interconnected to form the stent, each cylindrical element arranged in alignment along a longitudinal stent axis and having a first delivery diameter and a second expanded diameter; each cylindrical element being formed in a generally serpentine wave pattern having a plurality of alternating valley portions and peak portions with a space formed between each alternating valley portion and peak portion, wherein peak portions of the cylindrical elements are adapted to extend within the spaces formed on an adjacent cylindrical element; and a plurality of interconnecting members extending between the adjacent cylindrical elements and connecting the adjacent cylindrical elements to one another, wherein some of the interconnecting members are aligned collinearly with respect to each other to form a continuous spine which extends along the length of the stent.
Claim 11
Dependent Claim
22 words
The intravascular stent of claim 8 , wherein: a shoulder region extends between each of the alternating valley portions and peak portions.
Claim 12
Dependent Claim
25 words
The intravascular stent of claim 9 , wherein: the shoulder regions increase the width of the space formed between alternating valley portions and peak portions.
Claim 13
Dependent Claim
36 words
The intravascular stent of claim 8 , wherein: each peak portion of a cylindrical element is aligned to fit within the space formed between the alternating valley portions and peak portions of an adjacent cylindrical element.
Claim 14
Dependent Claim
28 words
The intravascular stent of claim 11 , wherein: each peak portion of a cylindrical element is aligned in phase with a peak portion of an adjacent cylindrical element.
Claim 15
Dependent Claim
23 words
The intravascular stent of claim 8 , wherein: at least one of the valley portions of each cylindrical element is a double-curved portion.
Claim 16
Dependent Claim
28 words
The intravascular stent of claim 13 , wherein: the plurality of interconnecting members extends from the double-curved portions of the cylindrical elements to connect adjacent cylindrical elements together.
Claim 17
Dependent Claim
24 words
The intravascular stent of claim 14 , wherein: the interconnecting members form at least one continuous spine which extends the length of the stent.
Claim 18
Dependent Claim
25 words
The intravascular stent of claim 15 , wherein: each cylindrical element includes a shoulder region which extends between each alternating peak portion and valley portion.
Claim 19
Dependent Claim
25 words
The intravascular stent of claim 16 , wherein: each shoulder region increases the width of the space formed between alternating peak portions and valley portions.
Claim 20
Dependent Claim
31 words
The intravascular stent of claim 17 , wherein: each peak portion is adapted to fit within the spaces formed between alternating peak portions and valley portions of an adjacent cylindrical element.
Claim 21
Dependent Claim
19 words
The intravascular stent of claim 18 , wherein: the stent is made from a biocompatible material which is self-expanding.
Claim 22
Dependent Claim
19 words
The intravascular stent of claim 8 , wherein: the stent is made from a biocompatible material which is self-expanding.
Claim 23
Dependent Claim
60 words
The intravascular stent of claim 8 , wherein: at least two of the valley portions of each cylindrical element is double-curved portion, and further including a plurality of interconnecting members extending from the double-curved portions of each cylindrical element to connect adjacent cylindrical elements together, the interconnecting members forming two continuous spines which extend along the length of the stent.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-04-22 | 2005-10-22 | 2006-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-22 | 2009-10-22 | 2010-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-22 | 2013-10-22 | 2014-04-23 | $7700.00 | Window Closed / Lapsed |