EP0679372A2
Expired / Lapsed
EP
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Radiopaque stent markers
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1995-04-24
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Granted: —
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Expires: 2015-04-24
Abstract
Abstract A radiopaque marker associated with a stent which is adapted to be implanted into a body lumen of a patient to maintain the patency thereof and a convenient and accurate method for affixing the radiopaque marker to the stent. The radiopaque marker defining an acceptable profile and capable of facilitating, under fluoroscopy, the identification of the position, diameter and length of a stent without obscuring the lesion being repaired and without impeding the deformation of an expandable stent.
Inventors
- 👤 Sharon S. Lam
- 👤 John J. Frantzen
- 👤 Farhad Khosravi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 11:02
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61B; A61B90/00; A61B90/39; A61F2002/91508; A61F2002/91516; A61F2002/91533; A61F2002/9155; A61F2002/91558; A61F2002/91575; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0013; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
30 words
A radiopaque marker (10), comprising: a band of radiopaque material affixed by means of plating to at least a portion of an outer circumference of a generally cylindrical stent (12).
Claim 2
Dependent Claim
29 words
The radiopaque marker (10) of claim 1, wherein said radiopaque marker is affixed adjacent a proximal end (14) and a distal end (16) of the generally cylindrical stent (12).
Claim 3
Dependent Claim
37 words
The radiopaque marker (10) of claim 1, or claim 2 wherein said stent (12) is expandable and comprises a deforming portion (20) and a non-deforming portion (18), the radiopaque marker being affixed to said non-deforming portion (18).
Claim 4
Dependent Claim
24 words
The radiopaque marker (10) of any preceding claim, wherein said radiopaque material comprises a metal taken from the group of gold, platinum and silver.
Claim 5
Dependent Claim
30 words
The radiopaque marker (10) of any preceding claim, wherein said band of radiopaque material has a thickness in the range of approximately 0.008 to 0.080 mm (.0003 to .003 inches).
Claim 6
Dependent Claim
22 words
The radiopaque marker (10) of any preceding claim, wherein said band extends a full circumference of a portion of said stent (12).
Claim 7
Dependent Claim
14 words
The radiopaque marker of any preceding claim, wherein said band comprises a pattern (13).
Claim 8
Dependent Claim
15 words
The radiopaque marker (10) of claim 7, wherein said pattern (13) comprises a wave-like shape.
Claim 9
Dependent Claim
62 words
A medical device for implantation in a blood vessel or artery, comprising: an intravascular stent (12) having a generally cylindrical configuration; and a radiopaque material (10) affixed to a portion of said intravascular stent so that said radiopaque material (10) is visible under fluoroscopy and can be easily located in the blood vessel or artery where said stent (12) is being implanted.
Claim 10
Dependent Claim
38 words
The medical device of claim 9, wherein said intravascular stent (12) has a proximal end (14) and a distal end (16) and said radiopaque material (10) is coated adjacent said proximal end (14) and said distal end (16).
Claim 11
Dependent Claim
38 words
The medical device of claim 9, or claim 10 wherein said stent (12) is expandable and comprises a deforming portion (20) and a non-deforming portion (18), and said radiopaque material (10) is affixed to said non-deforming portion (18).
Claim 12
Dependent Claim
30 words
The medical device of any of claims 9 to 11, wherein said radiopaque material (10) comprises a metal taken from the group of metals consisting of gold, platinum and silver.
Claim 13
Dependent Claim
31 words
The medical device of any of claims 9 to 12, wherein said radiopaque material (10) has a thickness in the range of approximately 0.008 to 0.080 mm (.0003 to .003 inches).
Claim 14
Dependent Claim
26 words
The medical device of any of claims 9 to 13, wherein said radiopaque material (10) extends a full circumference of a portion of said stent (12).
Claim 15
Dependent Claim
18 words
The medical device of any of claims 9 to 14, wherein said radiopaque material comprises a pattern (13).
Claim 16
Dependent Claim
17 words
The medical device of claim 15, wherein said pattern of said radiopaque material comprises a wave-like shape.
Claim 17
Independent Claim
65 words
A method for affixing a radiopaque marker to a generally cylindrical stent (12) comprising the steps: placing said stent (12) upon a mandrel (30); attaching masking material (32) to a portion of said stent (12); coating at least a portion of said stent (12) with a radiopaque material; removing said masking material (32) from said stent; and removing said stent (12) from said mandrel (30).
Claim 18
Dependent Claim
27 words
The method of claim 17, wherein said masking material (32) is a heat shrink tubing, which is heated and applied to a portion of said stent (12).
Claim 19
Dependent Claim
35 words
The method of claim 17 or claim 18, wherein said coating step includes plating a coating of metal on a portion of said stent (12), the metal taken from the group gold, platinum and silver.
Claim 20
Independent Claim
24 words
The method of any of claims 17 to 19, wherein said coating step includes coating a radiopaque plastic on a portion of said stent.
Claim 21
Independent Claim
37 words
The method of any of claims 17 to 20, wherein said coating step includes dipping said stent (12) in a solution of radiopaque plastic so that said portion of said stent receives said coating of radiopaque plastic.
Claim 22
Independent Claim
28 words
The method of any of claims 17 to 21, wherein said coating step includes solvent casting a radiopaque plastic on at least said portion of said stent (12).
Claim 23
Independent Claim
29 words
The method of any of claims 17 to 22, wherein said coating step includes vacuum deposition of a radiopaque plastic on at least said portion of said stent (12).
Claim 24
Independent Claim
19 words
The method of any of claims 17 to 23, wherein said masking material (32) is pre-fabricated to pre-determined dimensions.
Claim 25
Independent Claim
25 words
The method of any of claims 17 to 24, wherein said masking material (32) is cut to desired dimensions once placed upon said stent (12).
Claim 26
Dependent Claim
20 words
The method of claim 25, wherein said masking material (32) is cut to desired dimensions by use of a laser.
Claim 27
Independent Claim
29 words
The method of any of claims 17 to 26, wherein said masking material (32) is removed by using a laser to cut said masking material from said stent (12).
Claim 28
Independent Claim
23 words
The method of any of claims 17 to 27, wherein said masking material (32) is removed by dissolving said masking material with chemicals.
Claim 29
Independent Claim
61 words
A method for affixing a radiopaque marker (10) to a generally cylindrical stent (12) comprising the steps: placing said stent upon a mandrel (30); plating said stent with a radiopaque material; masking a portion of said stent with a masking material (32); etching said radiopaque material from an unmasked portion of said stent; and removing said masking material from said stent.
Claim 30
Dependent Claim
31 words
The method of claim 29, wherein said plating step includes depositing a coating of metal on a portion of said stent, said metal taken from the group gold, platinum and silver.
Claim 31
Dependent Claim
27 words
The method of claim 29 or claim 30, wherein said plating step includes depositing a coating of a radiopaque material on a portion of said stent (12).
References Cited (Backward Citations)
No citation records indexed.
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