US5741293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking stent
Assignee: Individual
•
Filing: 1995-11-28
•
Granted: 1998-04-21
•
Expires: 2015-11-28
Abstract
Abstract The invention discloses a stent which has a locking feature to prevent recoil. The stent is composed of a plurality of rings which are joined by crossties of various construction. The locking feature of each ring can be in alignment or staggered. The crossties may be straight or angled or they may have curvature to them to further promote longitudinal flexibility. The locking mechanism includes features which minimize sharp ends exposed to the vascular wall.
Inventors
- 👤 Bandula Wijay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:37
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/92; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
80 words
A stent, comprising: a plurality of spaced-apart components having opposed ends, said components capable of being rolled into a tubular shape, by overlapping one end on said other end on said plurality of components without any one end passing through its respective component and further comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping ends; at least one crosstie connecting said components.
Claim 2
Dependent Claim
80 words
A stent, comprising: a plurality of spaced-apart components having opposed ends, said components capable of being rolled into a tubular shape, by overlapping one end on said other end on said plurality of components without any one end passing through its respective component and further comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping ends; at least one crosstie connecting said components.
Claim 3
Dependent Claim
24 words
The stent of claim 1, wherein said locking assembly further comprises a ratchet-type mechanism formed by overlapping ends of said plurality of rolled components.
Claim 4
Dependent Claim
22 words
The stent of claim 1, wherein said crosstie flexibly connects said components to allow relative movement therebetween in a plurality of directions.
Claim 5
Dependent Claim
13 words
The stent of claim 1, wherein said crosstie comprises a thin elongated member.
Claim 6
Dependent Claim
75 words
A stent, comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; said crosstie comprises a thin elongated member; and said crosstie comprises at least one bend.
Claim 7
Dependent Claim
75 words
A stent, comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; said crosstie comprises a thin elongated member; and said crosstie comprises at least one bend.
Claim 8
Dependent Claim
69 words
The stent claim 5, comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; and said crosstie comprises a perforated band.
Claim 9
Dependent Claim
25 words
The stent of claim 6, wherein said band extends to less than 90° circumferentially and a plurality of such bands between adjacent components are used.
Claim 10
Dependent Claim
20 words
The stent of claim 6, wherein said crosstie comprises a single band covering at least 270° circumferentially between adjacent components.
Claim 11
Dependent Claim
117 words
A stent comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; said components comprise an enclosed wire shape having at least one transverse segment separating two substantially parallel segments and a tab portion opposite said transverse segment to complete said enclosed shape; and said tab comprising an undulation which, upon expansion of each said shape, brings said transverse member in locking engagement with at least one said undulation.
Claim 12
Dependent Claim
117 words
A stent comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; said components comprise an enclosed wire shape having at least one transverse segment separating two substantially parallel segments and a tab portion opposite said transverse segment to complete said enclosed shape; and said tab comprising an undulation which, upon expansion of each said shape, brings said transverse member in locking engagement with at least one said undulation.
Claim 13
Dependent Claim
126 words
A stent comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; said components comprise an enclosed wire shape having at least one transverse segment separating two substantially parallel segments and a tab portion opposite said transverse segment to complete said enclosed shape; said tab comprises at least one rung; and said transverse segment comprises an extending member oriented inwardly or laterally with respect to said rolled up shape which upon expansion of said shape engages said rung.
Claim 14
Dependent Claim
126 words
A stent comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; said components comprise an enclosed wire shape having at least one transverse segment separating two substantially parallel segments and a tab portion opposite said transverse segment to complete said enclosed shape; said tab comprises at least one rung; and said transverse segment comprises an extending member oriented inwardly or laterally with respect to said rolled up shape which upon expansion of said shape engages said rung.
Claim 15
Dependent Claim
126 words
A stent comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; said components comprise an enclosed wire shape having at least one transverse segment separating two substantially parallel segments and a tab portion opposite said transverse segment to complete said enclosed shape; said tab comprises at least one rung with an inwardly or laterally extending member when said shape is rolled; and said transverse member, upon expansion of said shape, engaging said extending member to prevent recoil.
Claim 16
Dependent Claim
126 words
A stent comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; said components comprise an enclosed wire shape having at least one transverse segment separating two substantially parallel segments and a tab portion opposite said transverse segment to complete said enclosed shape; said tab comprises at least one rung with an inwardly or laterally extending member when said shape is rolled; and said transverse member, upon expansion of said shape, engaging said extending member to prevent recoil.
Claim 17
Dependent Claim
77 words
A stent comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; and said locking assembly on one of said components is circumferentially offset from another of said components.
Claim 18
Dependent Claim
77 words
A stent comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; and said locking assembly on one of said components is circumferentially offset from another of said components.
Claim 19
Dependent Claim
83 words
A stent comprising: at least three spaced-apart components capable of being rolled into a tubular shape, said at least three components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said at least three components; at least one crosstie connecting said components; a plurality of crossties between said at least three components; and said crossties being aligned as between adjacent pairs of components.
Claim 20
Dependent Claim
83 words
A stent comprising: at least three spaced-apart components capable of being rolled into a tubular shape, said at least three components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said at least three components; at least one crosstie connecting said components; a plurality of crossties between said at least three components; and said crossties being aligned as between adjacent pairs of components.
Claim 21
Dependent Claim
83 words
A stent comprising: at least three spaced-apart components capable of being rolled into a tubular shape, said at least three components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said at least three components; at least one crosstie connecting said components; a plurality of crossties between said at least three components; and said crossties being misaligned as between adjacent pairs of components.
Claim 22
Dependent Claim
83 words
A stent comprising: at least three spaced-apart components capable of being rolled into a tubular shape, said at least three components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said at least three components; at least one crosstie connecting said components; a plurality of crossties between said at least three components; and said crossties being misaligned as between adjacent pairs of components.
Claim 23
Dependent Claim
86 words
A stent comprising: at least three spaced-apart components capable of being rolled into a tubular shape, said at least three components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said at least three components; at least one crosstie connecting said components; a plurality of crossties between said at least three components; and said crossties are of different degrees of stiffness between any pair of components.
Claim 24
Dependent Claim
86 words
A stent comprising: at least three spaced-apart components capable of being rolled into a tubular shape, said at least three components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said at least three components; at least one crosstie connecting said components; a plurality of crossties between said at least three components; and said crossties are of different degrees of stiffness between any pair of components.
Claim 25
Dependent Claim
92 words
A stent comprising: at least three spaced-apart components capable of being rolled into a tubular shape, said at least three components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said at least three components; at least one crosstie connecting said components; a plurality of crossties between said at least three components; and each of said crossties flexibly connects pairs of said components to allow relative movement in a plurality of directions.
Claim 26
Dependent Claim
92 words
A stent comprising: at least three spaced-apart components capable of being rolled into a tubular shape, said at least three components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said at least three components; at least one crosstie connecting said components; a plurality of crossties between said at least three components; and each of said crossties flexibly connects pairs of said components to allow relative movement in a plurality of directions.
Claim 27
Dependent Claim
19 words
The stent of claim 16, wherein each said crosstie comprises a thin, elongated member with at least one bend.
Claim 28
Dependent Claim
144 words
A stent comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; said components comprise an enclosed wire shape having at least one transverse segment separating two substantially parallel segments and a tab portion opposite said transverse segment to complete said enclosed shape; and wherein said tab portion comprises at least one guide member extending into the space between said two substantially parallel members to act as a guide until a catch member, extending inwardly or laterally from said tab when said shape is rolled, rides over said transverse segment to lock said shape against recoil.
Claim 29
Dependent Claim
144 words
A stent comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; said components comprise an enclosed wire shape having at least one transverse segment separating two substantially parallel segments and a tab portion opposite said transverse segment to complete said enclosed shape; and wherein said tab portion comprises at least one guide member extending into the space between said two substantially parallel members to act as a guide until a catch member, extending inwardly or laterally from said tab when said shape is rolled, rides over said transverse segment to lock said shape against recoil.
Claim 30
Dependent Claim
38 words
The stent of claim 18, further comprising: at least three components; a plurality of crossties between said at least three components; each of said crossties flexibly connects said components to allow relative movement in a plurality of directions.
Claim 31
Dependent Claim
19 words
The stent of claim 19, wherein each said crosstie comprises a thin, elongated member with at least one bend.
Claim 32
Dependent Claim
95 words
A stent comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; said locking assembly further comprises a ratchet-type mechanism formed by overlapping ends of said plurality of rolled components; and said crosstie flexibly connects said components to allow relative movement therebetween in a plurality of directions.
Claim 33
Dependent Claim
95 words
A stent comprising: a plurality of spaced-apart components capable of being rolled into a tubular shape, said plurality of components comprising a locking assembly which allows said rolled components to expand to at least one predetermined dimension and to lock such position against recoil by locking overlapping portions of said plurality of components; at least one crosstie connecting said components; said locking assembly further comprises a ratchet-type mechanism formed by overlapping ends of said plurality of rolled components; and said crosstie flexibly connects said components to allow relative movement therebetween in a plurality of directions.
Claim 34
Dependent Claim
13 words
The stent of claim 21, wherein said crosstie comprises a thin elongated member.
Claim 35
Dependent Claim
13 words
The stent of claim 22, wherein said crosstie comprises at least one bend.
Claim 36
Dependent Claim
62 words
The stent of claim 23, wherein: said components comprise an enclosed wire shape having at least one transverse segment separating two substantially parallel segments and a tab portion opposite said transverse segment to complete said enclosed shape; said tab comprising an undulation which, upon expansion of each said shape, brings said transverse member in locking engagement with at least one said undulation.
Claim 37
Dependent Claim
71 words
The stent of claim 23, wherein: said components comprise an enclosed wire shape having at least one transverse segment separating two substantially parallel segments and a tab portion opposite said transverse segment to complete said enclosed shape; said tab comprises at least one rung; said transverse segment comprises an extending member oriented inwardly or laterally with respect to said rolled up shape which upon expansion of said shape engages said rung.
Claim 38
Dependent Claim
21 words
The stent of claim 25, further comprising: at least three components; a plurality of crossties between said at least three components.
Claim 39
Dependent Claim
19 words
The stent of claim 26, further comprising: said plurality of crossties being aligned as between adjacent pairs of components.
Claim 40
Dependent Claim
19 words
The stent of claim 26, further comprising: said plurality of crossties being misaligned as between adjacent pairs of components.
Claim 41
Dependent Claim
22 words
The stent of claim 26, further comprising: said plurality of crossties are of different degrees of stiffness between any pair of components.
Claim 42
Dependent Claim
26 words
The stent of claim 26, further comprising: said plurality of crossties flexibly connect pairs of said components to allow relative movement in a plurality of directions.
Claim 43
Dependent Claim
20 words
The stent of claim 30, wherein said plurality of crossties comprise a thin, elongated member with at least one bend.
Claim 44
Dependent Claim
89 words
The stent of claim 25, wherein: said component comprises an enclosed wire shape having at least one transverse segment separating two substantially parallel segments and a tab portion opposite said transverse segment to complete said enclosed shape; wherein said tab portion comprises at least one guide member extending into the space between said two substantially parallel members to act as a guide until a catch member, extending inwardly or laterally from said tab when said shape is rolled, rides over said transverse segment to lock said shape against recoil.
Claim 45
Dependent Claim
71 words
The stent of claim 23, wherein: said components comprise an enclosed wire shape having at least one transverse segment separating two substantially parallel segments and a tab portion opposite said transverse segment to complete said enclosed shape; said tab comprises at least one rung with an inwardly or laterally extending member when said shape is rolled; said transverse member, upon expansion of said shape, engaging said extending member to prevent recoil.
Claim 46
Dependent Claim
22 words
The stent of claim 23, wherein said locking assembly on one of said components is circumferentially offset from another of said components.
References Cited (Backward Citations)
US4503569A
Cited
US4580568A
Cited
US4732152A
Cited
US4776337A
Cited
US4776337B1
Cited
USRE34037E
Cited
US4740207A
Cited
US4964853A
Cited
US4795458A
Cited
US4969458A
Cited
US4886062A
Cited
US5133732A
Cited
US4820298A
Cited
US5266073A
Cited
US4990151A
Cited
US5195984A
Cited
US4913141A
Cited
US4950227A
Cited
US5443500A
Cited
US5163958A
Cited
US5100429A
Cited
US5292331A
Cited
US5108416A
Cited
US5344426A
Cited
US5158548A
Cited
US5139480A
Cited
US5213561A
Cited
US5163952A
Cited
US5282824A
Cited
US5222971A
Cited
US5160341A
Cited
US5163951A
Cited
US5304121A
Cited
US5439444A
Cited
US5135536A
Cited
US5197978B1
Cited
US5197978A
Cited
US5314472A
Cited
US5234457A
Cited
US5421955A
Cited
US5421955B1
Cited
US5258042A
Cited
US5423885A
Cited
US5222969A
Cited
US5282823A
Cited
US5368566A
Cited
US5383928A
Cited
US5306294A
Cited
US5439445A
Cited
US5287861A
Cited
US5342348A
Cited
US5336518A
Cited
US5370691A
Cited
US5360401A
Cited
US5334201A
Cited
US5441515A
Cited
US5480423A
Cited
US5391172A
Cited
US5437632A
Cited
US5433706A
Cited
US5389106A
Cited
US5556413A
Cited
US5397355A
Cited
US5549662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-04-20 | 2001-10-20 | 2002-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-20 | 2005-10-20 | 2006-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-20 | 2009-10-20 | 2010-04-21 | $7700.00 | Window Closed / Lapsed |