Patent EP0850604A2 successfully refreshed from Google Patents.
EP0850604A2
Expired / Lapsed
EP
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A stent for angioplasty and associated production process
Assignee: Sorin Biomedica Cardio SpA
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Filing: 1997-12-24
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Granted: —
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Expires: 2017-12-24
Abstract
Abstract The stent (1) has surface sculpturing, preferably on its outer surface (2) only, constituted, for example, by microspheres (3), having the function of increasing the actual geometric surface area of the stent, of creating undercuts and roughness to encourage the application of coatings of active or activatable agents, as well as of improving the attachment of the stent (1) to the blood vessel wall.
Inventors
- 👤 Maria Curcio
- 👤 Giovanni Rolando
- 👤 Franco Vallana
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 12:43
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61L; A61L31/00; A61L31/02; A61L31/022; A61L31/08; A61L31/082; A61L31/084; A61L31/14; A61L31/16; A61L33/00; A61L33/02; A61L33/025; A61F2/0077; A61F2250/00; A61F2250/0014; A61F2250/0025; A61F2250/0058; A61F2250/0067; A61F2250/0068; A61F2310/00; A61F2310/00389; A61F2310/00574; A61F2310/0058; A61L2300/00; A61L2300/40; A61L2300/416; A61L2300/42; A61L2400/00; A61L2400/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885; Y10T29/49995
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
62 words
A stent for angioplasty including a body (1) of
generally tubular shape having an inner surface and an outer
surface (2), the said stent being capable of being dilated in
use from a radially-contracted position to a radially-expanded
position, characterised in that it has surface sculpturing (3,
4, 5, 6, 7, 8) on at least part of the said outer surface (2).
Claim 2
Dependent Claim
39 words
A stent according to Claim 1, characterised in that the
said sculpturing (3, 4, 5, 6, 7, 8) is only present on the
outer surface of the stent, the inner surface of the stent (1)
itself being substantially smooth.
Claim 3
Dependent Claim
27 words
A stent according to Claim 1 or Claim 2, characterised
in that it has a coating of biocompatible carbon material, at
least on the said inner surface.
Claim 4
Dependent Claim
24 words
A stent according to any of Claims 1 to 3, characterised
in that the said sculpturing has a peak-to-trough depth of
approximately 10-20 microns.
Claim 5
Dependent Claim
26 words
A stent according to any preceding claim, characterised
in that the said sculpturing is formed from material (3, 4, 5)
added to the stent surface (2).
Claim 6
Dependent Claim
27 words
A stent according to Claim 5, characterised in that the
said material (3, 4, 5) is identical to the material forming
the body of the stent (1).
Claim 7
Dependent Claim
27 words
A stent according to Claim 5, characterised in that the
said material (3, 4, 5) is different from the material forming
the body of the stent (1).
Claim 8
Dependent Claim
23 words
A stent according to any of Claims 5 to 7, characterised
in that the said added material (3, 4, 5) is a metal.
Claim 9
Dependent Claim
23 words
A stent according to any of Claims 5 to 8, characterised
in that the said added material is in the form of
microspheres.
Claim 10
Dependent Claim
24 words
A stent according to any of Claims 5 to 8, characterised
in that the said added material is in the form of granules
(4)
Claim 11
Dependent Claim
25 words
A stent according to any of Claims 5 to 8, characterised
in that the said added material is deposited in the form of
accretions (5).
Claim 12
Dependent Claim
26 words
A stent according to Claim 11, characterised in that the
said accretions (5) are deposited using a method chosen from
the group comprising sputtering and plasma-spray.
Claim 13
Dependent Claim
32 words
A stent according to any of Claims 1 to 4, characterised
in that the said sculpturing is constituted by formations (6,
7, 8) on the surface (2) of the spent (1) itself.
Claim 14
Dependent Claim
30 words
A stent according to any of Claims 1 to 4, characterised
by being constituted, in at least one part corresponding to
said surface sculpuring (3, 4), by a sintered body.
Claim 15
Independent Claim
71 words
A method for producing stents for angioplasty comprising
a body (1) of a generally tubular shape having an inner
surface and an outer surface (2), the said stent being capable
of being dilated in use from a radially-contracted position to
a radially-expanded position, characterised in that it
includes an operation for forming a surface sculpturing (3, 4,
5, 6, 7, 8) on at least part of the said outer surface (2).
Claim 16
Dependent Claim
38 words
A method according to Claim 15, characterised in that
the said sculpturing (3, 4, 5, 6, 7, 8) is only formed on the
outer surface of the stent, the inner surface of the stent (1)
being substantially smooth.
Claim 17
Dependent Claim
31 words
A method according to Claim 15 or Claim 16,
characterised in that it includes the operation of forming a
coating of biocompatible carbon material on at least the said
inner surface.
Claim 18
Independent Claim
24 words
A method according to any of Claims 15 to 17,
characterised in that the said sculpturing has a peak-to-trough
depth of approximately 10-20 microns.
Claim 19
Independent Claim
35 words
A method according to any of Claims 15 to 18,
characterised in that it includes the operation of forming the
said sculpturing by adding material (3, 4, 5) to the surface
(2) of the stent.
Claim 20
Dependent Claim
29 words
A method according to Claim 19, characterised in that
the said added material (3, 4, 5) is identical to the material
forming the body of the stent (1) itself.
Claim 21
Dependent Claim
29 words
A method according to Claim 19, characterised in that
the said added material (3, 4, 5) is different from the
material forming the body of the stent (1) itself.
Claim 22
Independent Claim
20 words
A method according to any of Claims 19 to 21,
characterised in that the said added material is a metal.
Claim 23
Independent Claim
30 words
A method according to any of Claims 15 to 22,
characterised in that the said material is added in the form
of microspheres (3), preferably using a partial melting
technique.
Claim 24
Independent Claim
24 words
A method according to any of Claims 19 to 22,
characterised in that the said material is added in the form
of granules (4).
Claim 25
Independent Claim
24 words
A method according to any of Claims 19 to 22,
characterised in that the said material is added in the form
of accretions (5).
Claim 26
Dependent Claim
26 words
A method according to Claim 25, characterised in that
the said accretions (5) are deposited using a method chosen
from the group comprising sputtering and plasma-spray.
Claim 27
Independent Claim
33 words
A method according to any of Claims 15 to 18,
characterised in that the said sculpturing is formed by
creating formations (6, 7, 8) on the surface (2) of the stent
(1) itself.
Claim 28
Dependent Claim
32 words
A method according to Claim 27, characterised in that
the formations (6, 7, 8) are formed using a method chosen from
the group comprising: sand-blasting, shot-blasting, scoring,
incision, knurling, chemical attack, photoincision.
Claim 29
Independent Claim
31 words
A method according to any of Claims 15 to 18,
characterised in that at least one part of the stent
corresponding to said surface sculpturing (3, 4) is realized
by sintering.
References Cited (Backward Citations)
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