EP0820726A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Aneurysm closure device assembly
Assignee: Boston Scientific Ltd Barbados
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Filing: 1997-07-23
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Granted: —
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Expires: 2017-07-23
Abstract
Abstract This is an artificial occlusion kit for implanting and retaining an artificial occlusion device in a body space adjacent to and extending from a body lumen in a mammal. The includes at least one occlusion device and a retaining device for blocking the migration of the occlusion device out of the occlusion site. The retaining device is radially expandable at a retaining site adjacent the body space to be occluded to a diameter that is sufficient to engage the body lumen wall at the retaining site and form a barrier across the entrance zone of the body space to be occluded. The expanded retaining device also forms a lumen for flow through body lumen at the retaining site. At least one semi-penetrable space may also be provided in the retaining device, allowing introduction of occlusion devices into the body space to be occluded, but preventing subsequent migration of the occlusion devices out of the body space. This semi-penetrable space may also be distensible to allow for delivery of occlusion devices therethrough. An introducer wire or a tapered-tip delivery catheter may be used to distend the distensible space and deliver the occlusion devices. The retaining device structure may further include a radiopaque metal wire wound into a primary helix over an inner core member made of a superelastic alloy of nickel and titanium. An implantable medical device assembly is also provided, having the structure described for the retaining device of the novel artificial occlusion kit, and which is attached to an elongate pusher via a sacrificial link that is electrolytically dissolvable.
Inventors
- 👤 David Kupiecki
- 👤 Clifford Teoh
- 👤 Hong Doan
- 👤 Son M. Gia
- 👤 Eric T. Engelson
- 👤 Uriel Hiram Chee
- 👤 Mehran Bashiri
- 👤 Joseph C. Eder
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 13:49
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/88; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12099; A61B17/12109; A61B17/12113; A61B17/12118; A61B17/12131; A61B17/1214; A61B17/12145; A61B17/12154; A61B2017/1205; A61B2017/12054; A61B2017/12063; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30092; A61F2210/00; A61F2210/0014; A61F2250/00; A61F2250/0014; A61F2250/0039; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
167 words
An artificial occlusion kit for implanting and retaining an artificial
occlusion device in a body space to be occluded adjacent to and extending from a
body lumen in a mammal, comprising: at least one occlusion device adapted for filling at least a portion of the
body space; and a retaining device assembly having a retaining device adapted to be
delivered and implanted at a retaining site in the body lumen adjacent to the body
space, said retaining device having two opposite ends and forming a first shape
with a first outer diameter, said retaining device being expandable to a second
shape having a second outer diameter larger than said first outer diameter and
sufficient to engage a body lumen wall at the retaining site such that a barrier is
formed against migration of said at least one occlusion device out of the body
space and into the body lumen, said second shape also forming a lumen along a
longitudinal axis sufficient to allow flow of fluids therethrough.
Claim 2
Dependent Claim
40 words
The artificial occlusion kit of claim 1, wherein said retaining device
forms said first shape when radially constrained for percutaneous delivery to the
retaining site, and forms said second shape upon release from said radial
constraint at the retaining site.
Claim 3
Dependent Claim
71 words
The artificial occlusion kit of claim 2, further comprising a delivery catheter having a proximal delivery catheter end with a
proximal delivery port, an opposite distal delivery catheter end portion with a
distal delivery port, and a delivery lumen extending between said delivery ports
and having a delivery lumen inner diameter less than said second outer diameter, wherein said retaining device is slideably disposable under radial
constraint within said delivery lumen.
Claim 4
Dependent Claim
87 words
The artificial occlusion kit of claim 3, wherein said retaining device
assembly further comprises a pusher that is coaxially slidable within said delivery
lumen and has a distal pusher end portion and a proximal pusher end portion, wherein said distal pusher end portion may be advanced through said
delivery lumen in confronting engagement with a proximal end of said retaining
device such that said retaining device may be pushed with the pusher out of the
delivery lumen through the distal delivery port and into the body space.
Claim 5
Dependent Claim
46 words
The artificial occlusion kit of claim 2, wherein said retaining device
assembly further comprises a pusher having a distal pusher end portion that is
detachably secured to said retaining device and a proximal pusher end portion that
is adapted to be axially manipulated by a user.
Claim 6
Dependent Claim
25 words
The artificial occlusion kit of claim 5, wherein said distal pusher end
portion is electrolytically detachable from said retaining device via an
electrolytically severable link.
Claim 7
Dependent Claim
47 words
The artificial occlusion kit of claim 6, further comprising: a power source electrically coupled to said electrolytically severable link;
and an electrode electrically coupled to said power source; wherein a circuit is formed when said electrode and electrolytically
severable joint are both in contact with a patient.
Claim 8
Dependent Claim
20 words
The artificial occlusion kit of claim 5, wherein said distal pusher end
portion is mechanically detachable from said retaining device.
Claim 9
Dependent Claim
28 words
The artificial occlusion kit of claim 3, wherein said retaining device
comprises at least one wire wound into a primary helix and having a secondary
shape imparted thereto.
Claim 10
Dependent Claim
32 words
The artificial occlusion kit of claim 9, wherein said primary helix
forms a primary helix lumen, said retaining device further comprising an elongate
core member coaxially disposed within said primary helix lumen.
Claim 11
Dependent Claim
15 words
The artificial occlusion kit of claim 10, wherein said elongate core
member is a metal.
Claim 12
Dependent Claim
29 words
The artificial occlusion kit of claim 1, wherein said second shape
defines at least one semi-penetrable space between the body space to be occluded
and the adjacent body lumen.
Claim 13
Dependent Claim
45 words
The artificial occlusion kit of claim 12, wherein said at least one
occlusion device forms a first occlusion device shape that is advanceable through
said semi-penetrable space, and is also expandable to a second occlusion device
shape that is not advanceable through said semi-penetrable space.
Claim 14
Dependent Claim
28 words
The artificial occlusion kit of claim 12, wherein said second shape
comprises a helix and said semi-penetrable space is the spacing between adjacent
helical windings of said helix.
Claim 15
Dependent Claim
13 words
The artificial occlusion kit of claim 12, wherein said semi-penetrable
space is distensible.
Claim 16
Dependent Claim
96 words
The artificial occlusion kit of claim 15, further comprising: a delivery catheter having a proximal delivery catheter end with a
proximal delivery port, an opposite distal delivery catheter end portion with a
distal delivery port, and a delivery lumen extending between said delivery ports, said distal delivery catheter end portion further having a tapered tip portion
with a distal tip diameter smaller than said semi-penetrable space, wherein said semi-penetrable spacing is distensible by advancing said
tapered tip portion at least partially therethrough, and wherein said at least one
occlusion device is advanceable within said delivery lumen.
Claim 17
Dependent Claim
134 words
The artificial occlusion kit of claim 15, wherein said at least one
occlusion device comprises two opposite ends and forms an occlusion device
lumen extending between two opposite occlusion device ports at said opposite
ends, said kit further comprising: an introducer wire being coaxially advanceable through said occlusion
device lumen and through said opposite occlusion device ports, and having an
introducer wire tip portion that is advanceable through and is adapted to distend
said semi-penetrable spacing. wherein said at least one occlusion device is advanceable through said
semi-penetrable spacing when said introducer wire tip portion is advanced through
and distending said semi-penetrable spacing, and wherein said at least one
occlusion device is prevented from migrating from a body space to be occluded
and through said semi-penetrable spacing when said semi-penetrable spacing is
not distended.
Claim 18
Dependent Claim
58 words
The artificial occlusion kit of claim 2, wherein said retaining device
form said first shape when radially constrained for a percutaneous delivery to a
core wire extending between said retaining device's opposite ends and constrained
to said core wire by electrolytic links, and wherein said retaining device forms
said second shape upon electrolytic release from said radial constraint.
Claim 19
Dependent Claim
29 words
The artificial occlusion kit of claim 19 wherein said retaining device
assembly and said core wire are insulated from any fluid found in said body space
and body lumen.
Claim 20
Dependent Claim
26 words
The artificial occlusion kit of claim 1 wherein said at least one
occlusion device approximates the shape of the body space into which it is placed.
Claim 21
Dependent Claim
31 words
The artificial occlusion kit of claim 1 wherein said retaining device
assembly further comprises a distal end having a distal diameter smaller than said
body lumen and said second outer diameter.
Claim 22
Dependent Claim
147 words
An implantable medical device assembly for engaging a body space
wall in a mammalian body, comprising: a.) an elongate implantable member having two opposite ends, and
wherein said member forms a first shape having a longitudinal axis and a first outer diameter on a
radial aspect of said longitudinal axis when radially artificially
constrained for percutaneous delivery into a body space having a body
space wall, and a second shape about said longitudinal axis upon release from said radial
constraint, said second shape having a second outer diameter larger
than said first outer diameter and sufficient to engage the body space
wall, and forming a lumen along said longitudinal axis with a lumen
diameter sufficient to allow fluid flow through said implantable
member; and b.) an elongate pusher extending from one of said opposite ends and being
attached to said implantable member via an electrolytically severable joint.
Claim 23
Dependent Claim
68 words
The implantable medical device assembly of claim 22, further
comprising a delivery catheter having a proximal end with a proximal delivery port, an
opposite distal end with a distal delivery port, and a delivery lumen extending
between said delivery ports and having a delivery lumen inner diameter less than
said second outer diameter, wherein said elongate implantable member is slideably disposable under
radial constraint within said delivery lumen.
Claim 24
Dependent Claim
30 words
The implantable medical device assembly of claim 22, wherein said
implant able member comprises at least one wire wound into a primary helix and
having a secondary geometry imparted thereto.
Claim 25
Dependent Claim
49 words
The implantable medical device assembly of claim 22, further
comprising a power source electrically coupled to said electrolytically severable joint;
and an electrode electrically coupled to said power source; wherein a circuit may be formed when said electrode and electrolytically
severable joint are both in contact with a patient.
Claim 26
Dependent Claim
17 words
The implantable medical device assembly of claim 25, wherein said
power source comprises a direct current source.
Claim 27
Dependent Claim
17 words
The implantable medical device assembly of claim 26, wherein said
power source comprises an alternating current source.
Claim 28
Dependent Claim
59 words
The implantable medical device assembly of claim 27, wherein said
power source produces a signal comprising an alternating current signal
superimposed over a direct current signal, said assembly further comprising a
sensing circuit for monitoring changes in said alternating current signal indicative
of progression of electrolytic detachment of said implantable member from said
pusher at said electrolytically severable joint.
Claim 29
Dependent Claim
33 words
The implantable medical device assembly of claim 24, wherein said
primary helix forms a primary helix lumen, said implantable member further
comprising an elongate core member coaxially disposed within said primary helix
lumen.
Claim 30
Dependent Claim
16 words
The implantable medical device assembly of claim 29, wherein said
elongate core member is a metal.
Claim 31
Dependent Claim
15 words
The implantable medical device assembly of claim 30, wherein said
metal is a super-elastic alloy.
Claim 32
Dependent Claim
16 words
The implantable medical device assembly of claim 31, wherein said
super-elastic alloy comprises nickel and titanium.
Claim 33
Dependent Claim
36 words
The implantable medical device assembly of claim 22 wherein said
elongate implantable member having two opposite ends further comprises a distal
end having a distal diameter smaller than said body lumen and said second outer
diameter.
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