Patent EP1005843A2 successfully refreshed from Google Patents.
EP1005843A2
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EP
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Controlled detachment stents
Assignee: Medinol Ltd
•
Filing: 1999-10-18
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Granted: —
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Expires: 2019-10-18
Abstract
Abstract A stent is provided with specific "designated detachment" points or zones, such that after the stent is deployed, the stress applied on the stent will cause the stent to detach at these designated detachment points or zones. When the detachment occurs completely around the circumference of the stent, the stent separates into stent segments, each able to move with the vessel independently of the other stent segments. The components at the designated detachment zones may have a cross-sectional area sufficiently low so that the components will detach under the stress placed on the stent after implantation. Alternatively or additionally, the components at the designated detachment zones may be made of a material that is sufficiently weaker so that the components will detach under the stress placed on the stent after implantation. The stent may have a lower number of components at the designated detachment zones than in the stent segments.
Inventors
- 👤 Jacob Richter
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 21:46
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2002/826; A61F2002/828; A61F2002/91533; A61F2002/91541; A61F2002/9155; A61F2002/91558; A61F2250/00; A61F2250/0058; A61F2250/0071
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
105 words
A stent for implantation in a vessel, wherein the stent
comprises: (a) a plurality of stent segments; and (b) means for detachably connecting adjacent stent
segments of said plurality of stent segments, said
detachable connecting means adapted to permit said
adjacent stent segments to separate from each
other in response to physiological stress placed
on said detachable connecting means, wherein said
separation occurs after a period of time after
implantation of the stent in the vessel, the
period of time being sufficient to permit
neointima formation around the stent in an amount
sufficient to secure said plurality of stent
segments with respect to the vessel.
Claim 2
Dependent Claim
48 words
A stent as claimed in claim 1, wherein said detachable
connecting means comprises at least one designated
detachment strut, wherein the cross-sectional area of
the designated detachment strut is sufficiently low so
that the designated detachment strut will separate
preferentially under stress placed on the stent after
implantation.
Claim 3
Dependent Claim
55 words
A stent as claimed in claim 1, wherein said detachable
connecting means comprises at least one designated
detachment strut, wherein the designated detachment
strut is made of a material that is sufficiently weaker
than elsewhere in the stent so that the designated
detachment strut will separate preferentially under
stress placed on the stent after implantation.
Claim 4
Dependent Claim
44 words
A stent as claimed in claim 1, wherein said detachable
connecting means comprises at least one designated
detachment strut, wherein the designated detachment
strut has a cross-sectional area that is less than the
cross-sectional area of a component within one of said
stent segments.
Claim 5
Dependent Claim
33 words
A stent as claimed in claim 4, wherein the designated
detachment strut is also made of a material that is
weaker than the material of a component within one of
said stent segments.
Claim 6
Dependent Claim
44 words
A stent as claimed in claim 1, wherein said detachable
connecting means comprises at least one designated
detachment strut, wherein the designated detachment
strut is made of a material that is weaker than the
material of a component within one of said stent
segments.
Claim 7
Dependent Claim
65 words
A stent as claimed in claim 1, wherein said detachable
connecting means comprises at least one designated
detachment strut in a designated detachment zone of the
stent, wherein the number of designated detachment
struts in said designated detachment zone is less than
the number of struts that traverse a plane that crosses
one of said stent segments perpendicular to an axis of
the stent segment.
Claim 8
Dependent Claim
34 words
A stent as claimed in claim 7, wherein at least one
designated detachment strut has a cross-sectional area
that is less than the cross-sectional area of a
component within one of said stent segments.
Claim 9
Dependent Claim
33 words
A stent as claimed in claim 8, wherein the designated
detachment strut is also made of a material that is
weaker than the material of a component within one of
said stent segments.
Claim 10
Dependent Claim
34 words
A stent as claimed in claim 7, wherein at least one
designated detachment strut is made of a material that
is weaker than the material of a component within one
of said stent segments.
Claim 11
Dependent Claim
41 words
A stent comprising at least two stent segments and at
least one designated detachment strut; and wherein the designated detachment strut has a
cross-sectional area that is less than the cross-sectional
area of a component within one of said stent
segments.
Claim 12
Dependent Claim
33 words
A stent as claimed in claim 11, wherein the designated
detachment strut is also made of a material that is
weaker than the material of a component within one of
said stent segments.
Claim 13
Dependent Claim
60 words
A stent as claimed in claim 11, wherein the designated
detachment strut is in a designated detachment zone of
the stent, and wherein the number of designated
detachment struts in the designated detachment zone is
less than the number of struts that traverse a plane
that crosses one of said stent segments perpendicular
to an axis of the stent segment.
Claim 14
Dependent Claim
33 words
A stent as claimed in claim 13, wherein the designated
detachment strut is also made of a material that is
weaker than the material of a component within one of
said stent segments.
Claim 15
Dependent Claim
41 words
A stent comprising at least two stent segments and at
least one designated detachment strut; and wherein the designated detachment strut is made of
a material that is weaker than the material of a
component within one of said stent segments.
Claim 16
Dependent Claim
60 words
A stent as claimed in claim 15, wherein the designated
detachment strut is in a designated detachment zone of
the stent, and wherein the number of designated
detachment struts in the designated detachment zone is
less than the number of struts that traverse a plane
that crosses one of said stent segments perpendicular
to an axis of the stent segment.
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