Patent US5855597A successfully refreshed from Google Patents.
US5855597A
Expired / Lapsed
US
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Stent valve and stent graft for percutaneous surgery
Assignee: Vascular Concepts Holdings Ltd
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Filing: 1997-05-07
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Granted: 1999-01-05
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Expires: 2017-05-07
Abstract
Abstract A star-shaped stent and replacement valve or replacement graft for use in repairing a damaged cardiac valve includes two to eight star-shaped members interconnected into a "chain". Once this "chain" has been created through interconnection of the star-shaped members, a central opening through all of the interconnected star-shaped members receives a replacement aortic valve tri-cuspid made of any suitable flexible and bio-compatible material. A catheter delivery system is used to deliver the stent with the aortic valve tri-cuspid to the desired site. The star-shaped stents are made by using a laser to cut out a plurality of flat star-shaped members with a plurality of outwardly and inwardly directed points. The outwardly directed points are bent so that they face away from a plane defined by the inwardly directed points and then a series of such stents are fastened together in a chain.
Inventors
- 👤 Swaminathan Jayaraman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:51
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2418; A61F2/82; A61F2/844; A61F2/2415; A61F2220/00; A61F2220/0025; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0017; A61F2230/0023; A61F2230/0028; A61F2230/005; A61F2230/0058; A61F2240/00; A61F2240/001; A61F2250/00; A61F2250/0014; A61F2250/0048
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
56 words
A stent comprising: a) a plurality of star-shaped members, each including: i) a plurality of outwardly directed points and an equal plurality of inwardly directed points; ii) an open center; iii) said outwardly directed points being bent and facing away from a plane defined by said inwardly directed points; b) said star-shaped members being connected together.
Claim 2
Dependent Claim
56 words
A stent comprising: a) a plurality of star-shaped members, each including: i) a plurality of outwardly directed points and an equal plurality of inwardly directed points; ii) an open center; iii) said outwardly directed points being bent and facing away from a plane defined by said inwardly directed points; b) said star-shaped members being connected together.
Claim 3
Dependent Claim
38 words
The stent of claim 1, wherein said star-shaped members are connected together by a connection that fastens at least one outwardly directed point of one star-shaped member with a corresponding outwardly directed point of an adjacent star-shaped member.
Claim 4
Dependent Claim
38 words
The stent of claim 1, wherein said star-shaped members are connected together by a connection that fastens at least one inwardly directed point of one star-shaped member with a corresponding inwardly directed point of an adjacent star-shaped member.
Claim 5
Dependent Claim
60 words
The stent of claim 2, wherein adjacent said star-shaped members form a pair of star-shaped members, and further including two pairs of star-shaped members being fastened together by a connection that fastens at least one inwardly directed point of one star-shaped member of one such pair with a corresponding inwardly directed point of one star-shaped member of an adjacent pair.
Claim 6
Dependent Claim
60 words
The stent of claim 3, wherein adjacent said star-shaped members form a pair of star-shaped members, and further including two pairs of star-shaped members being fastened together by a connection that fastens at least one outwardly directed point of one star-shaped member of one such pair with a corresponding outwardly directed point of one star-shaped member of an adjacent pair.
Claim 7
Dependent Claim
19 words
The stent of claim 1, wherein each star-shaped member has five outwardly directed points and five inwardly directed points.
Claim 8
Dependent Claim
19 words
The stent of claim 1, wherein each star-shaped member has four outwardly directed points and four inwardly directed points.
Claim 9
Dependent Claim
19 words
The stent of claim 1, wherein each star-shaped member has three outwardly directed points and three inwardly directed points.
Claim 10
Dependent Claim
19 words
The stent of claim 4, further including a replacement aortic valve tri-cuspid fastened within said pairs of star-shaped members.
Claim 11
Dependent Claim
15 words
The stent of claim 9, wherein said replacement aortic valve tri-cuspid includes a tubular body.
Claim 12
Dependent Claim
99 words
A method of making a stent-valve including the steps of: a) forming a bio-compatible cylindrical conduit and suturing a patch of a bio-compatible substance to an exterior surface of the conduit; b) pulling an end of the conduit inside the conduit until the patch is located on an interior surface of the conduit with the former exterior surface of the conduit now the interior surface; c) suturing a plurality of stents according to claim 1 to the exterior surface of the conduit; and d) deploying the patch on the inside surface of the conduit to form a mono-cuspid valve.
Claim 13
Dependent Claim
30 words
The method according to claim 11 wherein two patches are sutured spaced apart to the exterior surface of the conduit in step a) so that a bicuspid valve is formed.
Claim 14
Dependent Claim
30 words
The method according to claim 11 wherein three patches are sutured spaced apart to the exterior surface of the conduit in step a) so that a tricuspid valve is formed.
Claim 15
Dependent Claim
22 words
The method according to claim 11 wherein an anti-coagulant is coated on the conduit and patch to prevent clotting around the valve.
Claim 16
Independent Claim
64 words
A method of making a stent including the steps of: a) forming a plurality of flat star-shaped members each including a plurality of outwardly directed points and an equal plurality of inwardly directed points and an open center; b) bending said outwardly directed points so that they face away from a plane defined by said inwardly directed points; c) fastening said star-shaped members together.
Claim 17
Independent Claim
64 words
A method of making a stent including the steps of: a) forming a plurality of flat star-shaped members each including a plurality of outwardly directed points and an equal plurality of inwardly directed points and an open center; b) bending said outwardly directed points so that they face away from a plane defined by said inwardly directed points; c) fastening said star-shaped members together.
Claim 18
Dependent Claim
41 words
The method of claim 15, wherein said fastening step includes the step of connecting said star-shaped members together by fastening at least one outwardly directed point of one star-shaped member with a corresponding outwardly directed point of an adjacent star-shaped member.
Claim 19
Dependent Claim
41 words
The method of claim 15, wherein said fastening step includes the step of connecting said star-shaped members together by fastening at least one inwardly directed point of one star-shaped member with a corresponding inwardly directed point of an adjacent star-shaped member.
Claim 20
Dependent Claim
61 words
The method of claim 16, wherein adjacent said star-shaped members form a pair of star-shaped members, and said method further including the step of fastening two pairs of star-shaped members together by fastening at least one inwardly directed point of one star-shaped member of one such pair with a corresponding inwardly directed point of one star-shaped member of an adjacent pair.
Claim 21
Dependent Claim
61 words
The method of claim 17, wherein adjacent said star-shaped members form a pair of star-shaped members, and said method further including the step of fastening two pairs of star-shaped members together by fastening at least one outwardly directed point of one star-shaped member of one such pair with a corresponding outwardly directed point of one star-shaped member of an adjacent pair.
Claim 22
Dependent Claim
30 words
The method of claim 15, wherein said forming step includes the step of forming a plurality of flat star-shaped members each having five outwardly directed and five inwardly directed points.
Claim 23
Dependent Claim
19 words
The method of claim 18, further including the step of fastening a replacement aortic valve tri-cuspid within said pairs.
Claim 24
Dependent Claim
61 words
The method of claim 19, wherein adjacent said star-shaped members form a pair of star-shaped members, and said method further including the step of fastening two pairs of star-shaped members together by fastening at least one inwardly directed point of one star-shaped member of one such pair with a corresponding inwardly directed point of one star-shaped member of an adjacent pair.
Claim 25
Dependent Claim
35 words
The method of claim 15 wherein the plurality of flat-star shaped members are derived from cutting a flat metal sheet of a material selected from the group consisting of stainless steel, titanium, elgiloy or NITINOL.
Claim 26
Dependent Claim
119 words
A stent comprising: a) a plurality of star-shaped members, each including: i) five outwardly directed points and five inwardly directed points; ii) an open center; iii) said outwardly directed points being bent and facing away from a plane defined by said inwardly directed points; b) said star-shaped members being connected together in a plurality of pairs; c) two pairs of star-shaped members being fastened together by a connection fastening at least one inwardly or outwardly directed point of one star-shaped member of one such pair with a corresponding inwardly or outwardly directed point of one star-shaped member of an adjacent pair; d) a replacement aortic valve tri-cuspid fastened within said pairs of star-shaped members and including a tubular body.
Claim 27
Dependent Claim
119 words
A stent comprising: a) a plurality of star-shaped members, each including: i) five outwardly directed points and five inwardly directed points; ii) an open center; iii) said outwardly directed points being bent and facing away from a plane defined by said inwardly directed points; b) said star-shaped members being connected together in a plurality of pairs; c) two pairs of star-shaped members being fastened together by a connection fastening at least one inwardly or outwardly directed point of one star-shaped member of one such pair with a corresponding inwardly or outwardly directed point of one star-shaped member of an adjacent pair; d) a replacement aortic valve tri-cuspid fastened within said pairs of star-shaped members and including a tubular body.
Claim 28
Dependent Claim
16 words
The stent according to claim 24 wherein the star-shaped members are sutured to the tubular body.
Claim 29
Dependent Claim
12 words
The stent according to claim 25 wherein the tubular body is bifurcated.
Claim 30
Dependent Claim
22 words
The stent according to claim 24 wherein the tubular body is a knitted, woven or extruded polymeric material acceptable to living tissue.
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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) | 2002-01-04 | 2002-07-06 | 2003-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-01-04 | 2006-07-06 | 2007-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-01-04 | 2010-07-06 | 2011-01-05 | $7700.00 | Window Closed / Lapsed |