EP0734697A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
System for the implantation of liquid coils with secondary shape
Assignee: Boston Scientific Ltd Barbados
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Filing: 1996-03-29
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Granted: —
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Expires: 2016-03-29
Abstract
Abstract An occlusive implant includes an elongated member having an end, a portion proximal to that end, and a portion distal to that end. The proximal portion is sufficiently flexible so that it can be folded upon itself and maintain that configuration without further restraint. At least a portion of the distal portion is preformed to have a first configuration when in a first state and a second configuration when in a second state. The distal portion second configuration has a flow resistance substantially greater than that of the proximal portion. When discharged in the region to be occluded, the proximal portion is forced into a mass around at least a portion of the distal portion secondary structure. As the mass builds in size, it frictionally engages the surrounding vasculature wall and anchors the implant thereto.
Inventors
- 👤 David Kupiecki
- 👤 Cong Thach
- 👤 John Ortiz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 07:34
CPC Classifications
A; A61; A61M; A61M37/00; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12131; A61B17/1214; A61B17/12145; A61B17/12099; A61B17/12109; A61B17/1215; A61M25/00; A61M25/0021; A61M25/0041; A61B2017/00535; A61B2017/00539
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
90 words
An occlusive implant comprising an elongated member having an end, a portion proximal to said end, and a portion distal to said end, said proximal portion being sufficiently flexible so that it can be folded upon itself and maintain that configuration without further restraint, at least a portion of said distal portion being preformed to have a first configuration when in a first state and a second configuration when in a second state, said distal portion second configuration having a flow resistance substantially greater than that of said proximal portion.
Claim 2
Dependent Claim
32 words
The implant of claim 1 wherein said proximal and distal portions are contiguous and can be arranged so that the flow resistance of the elongated member is essentially uniform along its length.
Claim 3
Dependent Claim
24 words
The implant of claim 1 or 2 wherein said proximal and distal portions can be arranged to have a common longitudinal axis and diameter.
Claim 4
Dependent Claim
43 words
The implant of claim 1, 2 or 3 wherein said proximal portion has a generally uniform diameter along its length and said distal portion has a diameter when in its second configuration of at least about twice that of said proximal portion diameter.
Claim 5
Dependent Claim
25 words
The implant of claim 1, 2, 3 or 4 wherein said proximal portion assumes a random configuration when generally unrestrained and subjected to fluid pressure.
Claim 6
Dependent Claim
22 words
The implant of claim 5 wherein said distal portion substantially maintains its preformed configuration when generally unrestrained and subjected to fluid pressure.
Claim 7
Dependent Claim
25 words
The implant of any one of the preceding claims wherein said proximal portion forms at least the same length as said distal portion second configuration.
Claim 8
Dependent Claim
18 words
The implant of any one of the preceding claims wherein said distal portion second configuration is generally helical.
Claim 9
Dependent Claim
16 words
The implant of any one of the preceding claims wherein said implant is an embolic device.
Claim 10
Dependent Claim
11 words
The implant of claim 9 wherein said device comprises a coil.
Claim 11
Dependent Claim
23 words
The implant of claim 10 wherein said coil comprises a filament formed into multiple windings, said filament being ≤ 1 mil in diameter.
Claim 12
Dependent Claim
58 words
A vaso-occlusive device comprising proximal and distal portions, said proximal portion having a flexibility that provides at least a 20% deflection from its own weight in a 1 cm length thereof, at least a portion of said distal portion having a first configuration when in a first state and a second preformed configuration when in a relaxed state.
Claim 13
Dependent Claim
35 words
The device of claim 12 wherein said proximal portion has a length that is at least about 100% the length of said portion of the distal portion when the latter is in said second state.
Claim 14
Dependent Claim
21 words
The device of claim 12 or 13 wherein said proximal portion is without a second preformed configuration in its relaxed state.
Claim 15
Dependent Claim
61 words
An introducer cartridge comprising: a first portion having a passage formed therethrough and a region adapted for coupling to a catheter; an implant disposed in said passage; a second portion having a recess formed therein and in fluid communication with said passage; and a blocking member positioned in said recess adjacent to said passage for preventing displacement of said implant thereby.
Claim 16
Dependent Claim
11 words
The cartridge of claim 15 wherein said blocking member is perforate.
Claim 17
Dependent Claim
96 words
A vaso-occlusive device cartridge assembly comprising: a vaso-occlusive device having first and second regions, said first region having a primary preformed configuration, and said second region having primary and secondary preformed configurations, said secondary configuration having a flow resistance substantially greater than both of said primary configurations; a tube that surrounds and restrains said device in a generally linear configuration, said tube having a proximal end to which said first region is adjacent and a distal end; and an adapter coupled to said proximal end of said tube for coupling a fluid source to said tube.
Claim 18
Dependent Claim
29 words
The assembly of claim 17 wherein said primary region has a flexibility that provides at least a 20% deflection from its own weight in a 1 cm length thereof.
Claim 19
Dependent Claim
32 words
The assembly of claim 17 or 18 wherein said first region has an axial length that is at least about 100% the axial length of the secondary configuration of said second region.
Claim 20
Dependent Claim
59 words
The assembly of claim 17, 18 or 19 further including a blocking member, said tube defining a passage in which said device is disposed, said adapter having a recess formed therein and fluidly coupled to said passage, and said blocking member being positioned in said recess adjacent to said passage and sized for preventing displacement of said device thereby.
Claim 21
Dependent Claim
11 words
The assembly of claim 20 wherein said blocking member is perforate.
Claim 22
Dependent Claim
14 words
The assembly of claim 20 or 21 wherein said blocking member comprises a filter.
References Cited (Backward Citations)
No citation records indexed.
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