US6432133B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandable stents and method for making same
Assignee: Abbott Cardiovascular Systems Inc
•
Filing: 2000-11-16
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Granted: 2002-08-13
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Expires: 2020-11-16
Abstract
Abstract The invention is directed to an expandable stent for implantation in a body lumen, such as an artery, and a method for making it from a single length of tubing. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common axis and interconnected by one or more interconnective elements. The individual radially expandable cylindrical elements consist of ribbon-like material disposed in an undulating pattern. Portions of the expanded stent project outwardly into engagement with the vessel wall to more securely attach the stent.
Inventors
- 👤 Lilip Lau
- 👤 William M. Hartigan
- 👤 John J. Frantzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:09
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/88; A61F2/89; A61F2/90; A61F2/91; A61F2/915; C; C23; C23F; C23F1/00; C23F1/02; C23F1/04; A61F2/848; A61F2/95; A61F2/958; A61F2002/91533; A61F2002/9155; A61F2002/91558; A61F2002/91575; A61F2210/00; A61F2210/0014; A61F2210/0019; A61M; A61M25/00; A61M25/10; A61M2025/1043; A61M2025/1081; Y; Y10; Y10S; Y10S623/00; Y10S623/901; Y10S623/902; Y10S623/903; Y10S623/92; Y10S623/921; Y10T; Y10T29/00; Y10T29/49; Y10T29/49995
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
84 words
A longitudinally flexible stent, comprising: a plurality of interconnected cylindrical elements aligned along a stent longitudinal axis, each cylindrical element having a shape configured to enable the cylindrical element to expand with the inflation of an expandable member disposed therein; wherein each of the cylindrical elements has a diameter and a length, the length of each cylindrical element being less than the diameter of the cylindrical element upon inflation of the expandable member; and the cylindrical elements having a length less than 2.5 mm.
Claim 2
Dependent Claim
84 words
A longitudinally flexible stent, comprising: a plurality of interconnected cylindrical elements aligned along a stent longitudinal axis, each cylindrical element having a shape configured to enable the cylindrical element to expand with the inflation of an expandable member disposed therein; wherein each of the cylindrical elements has a diameter and a length, the length of each cylindrical element being less than the diameter of the cylindrical element upon inflation of the expandable member; and the cylindrical elements having a length less than 2.5 mm.
Claim 3
Dependent Claim
17 words
The stent of claim 1 , wherein upon expansion there is no appreciable shortening of the stent.
Claim 4
Dependent Claim
12 words
The stent of claim 1 , wherein the shape includes U-shaped members.
Claim 5
Dependent Claim
17 words
The stent of claim 1 , wherein the stent is formed from a single piece of tubing.
Claim 6
Dependent Claim
15 words
The stent of claim 1 , wherein the cylindrical elements are interconnected by connecting elements.
Claim 7
Dependent Claim
16 words
The stent of claim 5 , wherein at least two connecting elements connect adjacent cylindrical elements.
Claim 8
Dependent Claim
41 words
The stent of claim 5 , wherein at least one connecting element between a first cylindrical element and a second cylindrical element is circumferentially offset from at least one connecting element between the second cylindrical element and a third cylindrical element.
Claim 9
Dependent Claim
13 words
The stent of claim 1 , wherein each cylindrical element is formed individually.
Claim 10
Dependent Claim
19 words
The stent of claim 8 , wherein the individual cylindrical elements are interconnected by at least one weld connection.
Claim 11
Dependent Claim
16 words
The stent of claim 1 , wherein the shapes of adjacent cylindrical elements are in phase.
Claim 12
Dependent Claim
17 words
The stent of claim 1 , wherein the shapes of adjacent cylindrical elements are out of phase.
Claim 13
Dependent Claim
91 words
A balloon expandable longitudinally flexible stent, comprising: a stent pattern having a plurality of single undulating portions extending circumferentially about a longitudinal axis; each single undulating portion being formed individually and thereafter being connected together along the longitudinal axis; at least one of the single undulating portions having a length and a diameter, the length being less than the diameter upon inflation of the balloon; the single undulating portions having a length less than 2.5 mm; and wherein there is no appreciable shortening of the stent upon inflation of the balloon.
Claim 14
Dependent Claim
91 words
A balloon expandable longitudinally flexible stent, comprising: a stent pattern having a plurality of single undulating portions extending circumferentially about a longitudinal axis; each single undulating portion being formed individually and thereafter being connected together along the longitudinal axis; at least one of the single undulating portions having a length and a diameter, the length being less than the diameter upon inflation of the balloon; the single undulating portions having a length less than 2.5 mm; and wherein there is no appreciable shortening of the stent upon inflation of the balloon.
Claim 15
Dependent Claim
19 words
The stent of claim 12 , wherein at least two adjacent single undulating portions are interconnected by connecting elements.
Claim 16
Dependent Claim
22 words
The stent of claim 12 , wherein at least two adjacent single undulating portions are interconnected by at least one weld connection.
Claim 17
Dependent Claim
82 words
A longitudinally flexible stent, comprising: a stent pattern having a plurality of single undulating portions extending circumferentially about a longitudinal axis, the single undulating portions being connected together along the longitudinal axis; the single undulating portions having a length less than 2.5 mm; the plurality of single undulating portions having open ends and closed ends, at least one of the open ends being no wider than one of the closed ends when the stent is mounted on an expandable member before expansion.
Claim 18
Dependent Claim
82 words
A longitudinally flexible stent, comprising: a stent pattern having a plurality of single undulating portions extending circumferentially about a longitudinal axis, the single undulating portions being connected together along the longitudinal axis; the single undulating portions having a length less than 2.5 mm; the plurality of single undulating portions having open ends and closed ends, at least one of the open ends being no wider than one of the closed ends when the stent is mounted on an expandable member before expansion.
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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) | 2005-08-12 | 2006-02-11 | 2006-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-08-12 | 2010-02-11 | 2010-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-08-12 | 2014-02-11 | 2014-08-13 | $7700.00 | Window Closed / Lapsed |