Patent US3884229A successfully refreshed from Google Patents.
US5669931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid coils with secondary shape
Assignee: Stryker European Operations Holdings LLC
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Filing: 1996-04-02
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Granted: 1997-09-23
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Expires: 2016-04-02
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 is believed to frictionally engage the surrounding vasculature wall and anchor the implant thereto. The occlusive implant preferably is provided in an introducer cartridge for delivery in vivo.
Inventors
- 👤 David Kupiecki
- 👤 Cong Thach
- 👤 John E. Ortiz
- 👤 Neil J. Sheehan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:15
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: 41
Claim 1
Independent Claim
126 words
An occlusive implant comprising an elongated member having a proximal portion and a distal portion, said proximal portion having a flexibility of at least a 20° deflection from horizontal under its own weight when a 1 cm section of said proximal portion having an unrestrained free end is horizontally supported and said deflection is measured at said free end, at least a portion of said distal portion having a first configuration when restrained in a first state within a catheter and a second different configuration when in an unrestrained second state, said proximal portion therefore capable of maintaining the first configuration both when restrained and when unrestrained, said distal portion second configuration having a flow resistance substantially greater than that of said first configuration proximal portion.
Claim 2
Dependent Claim
126 words
An occlusive implant comprising an elongated member having a proximal portion and a distal portion, said proximal portion having a flexibility of at least a 20° deflection from horizontal under its own weight when a 1 cm section of said proximal portion having an unrestrained free end is horizontally supported and said deflection is measured at said free end, at least a portion of said distal portion having a first configuration when restrained in a first state within a catheter and a second different configuration when in an unrestrained second state, said proximal portion therefore capable of maintaining the first configuration both when restrained and when unrestrained, said distal portion second configuration having a flow resistance substantially greater than that of said first configuration proximal portion.
Claim 3
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 4
Dependent Claim
22 words
The implant of claim 1 wherein said proximal and distal portions can be arranged to have a common longitudinal axis and diameter.
Claim 5
Dependent Claim
40 words
The implant of claim 1 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 6
Dependent Claim
18 words
The implant of claim 1 wherein said proximal portion assumes a random configuration when unrestrained within a catheter.
Claim 7
Dependent Claim
19 words
The implant of claim 5 wherein said distal portion substantially maintains its preformed configuration when unrestrained within a catheter.
Claim 8
Dependent Claim
21 words
The implant of claim 1 wherein said proximal portion forms at least the same length as said distal portion second configuration.
Claim 9
Dependent Claim
14 words
The implant of claim 1 wherein said distal portion second configuration is generally helical.
Claim 10
Dependent Claim
12 words
The implant of claim 1 wherein said implant is an embolic device.
Claim 11
Dependent Claim
11 words
The implant of claim 9 wherein said device comprises a coil.
Claim 12
Dependent Claim
26 words
The implant of claim 10 wherein said coil comprises a filament formed into multiple windings, said filament being ≦ about 1 mil (0.001 inches) in diameter.
Claim 13
Dependent Claim
107 words
A vaso-occlusive device comprising proximal and distal portions, said vaso-occlusive device being of a size, shape, and material such that said proximal portion has a flexibility of at least a 20° deflection from horizontal under its own weight when a 1 cm section of said proximal portion having an unrestrained free end is horizontally supported and said deflection is measured at said free end and has a first configuration both when restrained and when unrestrained, at least a portion of said distal portion having said first configuration when in a first state and a second preformed configuration different than the first state when in a relaxed state.
Claim 14
Dependent Claim
107 words
A vaso-occlusive device comprising proximal and distal portions, said vaso-occlusive device being of a size, shape, and material such that said proximal portion has a flexibility of at least a 20° deflection from horizontal under its own weight when a 1 cm section of said proximal portion having an unrestrained free end is horizontally supported and said deflection is measured at said free end and has a first configuration both when restrained and when unrestrained, at least a portion of said distal portion having said first configuration when in a first state and a second preformed configuration different than the first state when in a relaxed state.
Claim 15
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 16
Dependent Claim
69 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 porous plastic blocking member having a porosity in the range of about 50 μ to 100 μ positioned in said recess adjacent to said passage.
Claim 17
Dependent Claim
69 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 porous plastic blocking member having a porosity in the range of about 50 μ to 100 μ positioned in said recess adjacent to said passage.
Claim 18
Dependent Claim
19 words
The introducer cartridge of claim 14 wherein said blocking member is configured for preventing displacement of said implant thereby.
Claim 19
Dependent Claim
25 words
The introducer cartridge of claim 14 wherein said first portion includes an outlet and the introducer cartridge includes a cap removably coupled to said outlet.
Claim 20
Dependent Claim
19 words
The introducer cartridge of claim 16 wherein said cap includes at least one perforate portion for discharging fluid therethrough.
Claim 21
Dependent Claim
14 words
The introducer cartridge of claim 16 further including a filter disposed in said cap.
Claim 22
Dependent Claim
21 words
The introducer cartridge of claim 18 wherein said cap includes an opening formed therethrough and in fluid communication with said filter.
Claim 23
Dependent Claim
16 words
The introducer cartridge of claim 19 wherein the filter disposed in said cap comprises porous plastic.
Claim 24
Dependent Claim
187 words
A vaso-occlusive device cartridge assembly comprising: a vaso-occlusive device having first and second regions, said first region having a first configuration both when restrained and when unrestrained, said first region having a flexibility of at least a 20° deflection from horizontal under its own weight when a 1 cm section of said first region having an unrestrained free end is horizontally supported and said deflection is measured at said free end, and said second region having said first configuration when restrained and a secondary relaxed preformed configuration, said second region secondary configuration being different than the second region first configuration and having a flow resistance substantially greater than said first configuration and wherein said first region has an axial length that is at least about 100% of the axial length of the secondary configuration of said second region; 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 25
Dependent Claim
187 words
A vaso-occlusive device cartridge assembly comprising: a vaso-occlusive device having first and second regions, said first region having a first configuration both when restrained and when unrestrained, said first region having a flexibility of at least a 20° deflection from horizontal under its own weight when a 1 cm section of said first region having an unrestrained free end is horizontally supported and said deflection is measured at said free end, and said second region having said first configuration when restrained and a secondary relaxed preformed configuration, said second region secondary configuration being different than the second region first configuration and having a flow resistance substantially greater than said first configuration and wherein said first region has an axial length that is at least about 100% of the axial length of the secondary configuration of said second region; 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 26
Dependent Claim
30 words
The assembly of claim 21 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 27
Dependent Claim
56 words
The assembly of claim 21 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 28
Dependent Claim
11 words
The assembly of claim 23 wherein said blocking member is perforate.
Claim 29
Dependent Claim
12 words
The assembly of claim 23 wherein said blocking member comprises a filter.
Claim 30
Dependent Claim
160 words
An occlusive implant comprising an elongated member having a proximal portion and a distal portion, said occlusive implant being of a size, shape, and material such that said proximal portion having a flexibility of at least a 20° deflection from horizontal under its own weight when a 1 cm section of said proximal portion having an unrestrained free end is horizontally supported and said deflection is measured at said free end and wherein said proximal portion has a first configuration both when restrained and when unrestrained, at least a portion of said distal portion being preformed to have said first configuration when restrained in a first state within a catheter and a second different configuration when in an unrestrained second state, said distal portion second configuration having a flow resistance substantially greater than that of said first configuration proximal portion and wherein the proximal portion first configuration has a length at least 100% of the distal portion second configuration length.
Claim 31
Dependent Claim
160 words
An occlusive implant comprising an elongated member having a proximal portion and a distal portion, said occlusive implant being of a size, shape, and material such that said proximal portion having a flexibility of at least a 20° deflection from horizontal under its own weight when a 1 cm section of said proximal portion having an unrestrained free end is horizontally supported and said deflection is measured at said free end and wherein said proximal portion has a first configuration both when restrained and when unrestrained, at least a portion of said distal portion being preformed to have said first configuration when restrained in a first state within a catheter and a second different configuration when in an unrestrained second state, said distal portion second configuration having a flow resistance substantially greater than that of said first configuration proximal portion and wherein the proximal portion first configuration has a length at least 100% of the distal portion second configuration length.
Claim 32
Dependent Claim
32 words
The implant of claim 26 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 33
Dependent Claim
22 words
The implant of claim 26 wherein said proximal and distal portions can be arranged to have a common longitudinal axis and diameter.
Claim 34
Dependent Claim
40 words
The implant of claim 26 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 35
Dependent Claim
16 words
The implant of claim 26 wherein said proximal portion assumes a random configuration when generally unrestrained.
Claim 36
Dependent Claim
17 words
The implant of claim 30 wherein said distal portion substantially maintains its preformed configuration when generally unrestrained.
Claim 37
Dependent Claim
21 words
The implant of claim 26 wherein said proximal portion forms at least the same length as said distal portion second configuration.
Claim 38
Dependent Claim
14 words
The implant of claim 26 wherein said distal portion second configuration is generally helical.
Claim 39
Dependent Claim
12 words
The implant of claim 26 wherein said implant is an embolic device.
Claim 40
Dependent Claim
11 words
The implant of claim 34 wherein said device comprises a coil.
Claim 41
Dependent Claim
26 words
The implant of claim 35 wherein said coil comprises a filament formed into multiple windings, said filament being ≦ about 1 mil (0.001 inches) in diameter.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-22 | 2001-03-24 | 2001-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-22 | 2005-03-24 | 2005-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-22 | 2009-03-24 | 2009-09-23 | $7700.00 | Window Closed / Lapsed |