US6033423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple layered vaso-occlusive coils
Assignee: Target Therapeutics Inc
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Filing: 1997-11-19
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Granted: 2000-03-07
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Expires: 2017-11-19
Abstract
Abstract This is an implantable vaso-occlusive device. It is a complex, helically wound coil having multiple secondary layers of primary windings. The final shape is often chunky in nature and may be used in the approximate shape of an anatomical cavity. It may be deployed in the approximate shape of a sphere, an ovoid, or other distorted spherical shape. The device is a self-forming shape made from a pre-formed linear vaso-occlusion member. Fibers may be introduced onto the device and affixed to the pre-formed linear member. The constituent member may be also be covered with a fibrous braid. The device is typically introduced through a catheter. The device is passed axially through the catheter sheath and assumes its form upon exiting the catheter without further action. The invention also includes methods of winding the anatomically shaped vaso-occlusive device into appropriately shaped forms and annealing them to form various devices.
Inventors
- 👤 Christopher G. M. Ken
- 👤 Erik T. Engelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:11
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12099; A61B17/12109; A61B17/12113; A61B17/12131; A61B17/1214; A61B17/12145; A61B17/1215; A61B17/12154; A61L; A61L31/00; A61L31/02; A61L31/022; A61B2017/00526; A61B2017/1205; A61B2017/12054; A61B2017/12063
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
103 words
A vaso-occlusive device comprising a primary coil having a proximal end and a distal end constructed of a plurality of helically wound turns of a biocompatible wire and having a secondary form having a single longitudinal axis with at least a first section having a first section end and a second section, said first and second sections constructed of a plurality of helically wound turns of said primary coil, wherein said second section is at least partially surrounded by said first section and wherein the overall secondary form of the vaso-occlusive device is self-forming in the approximate shape of a sphere or ovoid.
Claim 2
Dependent Claim
103 words
A vaso-occlusive device comprising a primary coil having a proximal end and a distal end constructed of a plurality of helically wound turns of a biocompatible wire and having a secondary form having a single longitudinal axis with at least a first section having a first section end and a second section, said first and second sections constructed of a plurality of helically wound turns of said primary coil, wherein said second section is at least partially surrounded by said first section and wherein the overall secondary form of the vaso-occlusive device is self-forming in the approximate shape of a sphere or ovoid.
Claim 3
Dependent Claim
23 words
The device of claim 1 further comprising a reinforcement which runs from the distal end to the proximal end of the primary coil.
Claim 4
Dependent Claim
10 words
The device of claim 2 wherein the reinforcement is wire.
Claim 5
Dependent Claim
22 words
The device of claim 1 comprising a metal selected from the group consisting of platinum, palladium, rhodium, gold, tungsten, and their alloys.
Claim 6
Dependent Claim
12 words
The device of claim 4 comprising an alloy of platinum and tungsten.
Claim 7
Dependent Claim
19 words
The device of claim 1 comprising an alloy selected from the group consisting of stainless steels and super-elastic alloys.
Claim 8
Dependent Claim
10 words
The device of claim 6 wherein the alloy is nitinol.
Claim 9
Dependent Claim
12 words
The device of claim 1 comprising a polymer containing a radio-opaque filler.
Claim 10
Dependent Claim
10 words
The device of claim 1 additionally comprising attached polymeric fibers.
Claim 11
Dependent Claim
23 words
The device of claim 1 wherein the primary coil has regions which are relatively more flexible than other regions of the primary coil.
Claim 12
Dependent Claim
23 words
The device of claim 1 additionally a deployment tip attached to at least one of proximal or distal ends of the primary coil.
Claim 13
Dependent Claim
23 words
The device of claim 11 wherein the deployment tip comprises a mechanically detachable end adapted to attach to and detach from a pusher.
Claim 14
Dependent Claim
28 words
The device of claim 11 wherein the deployment tip comprises an electrolytically detachable end adapted to detach from a pusher by imposition of a current on said pusher.
Claim 15
Dependent Claim
104 words
A vaso-occlusive device comprising a primary coil constructed of a plurality of helically wound turns of a biocompatible wire and having a secondary form with at least a first section and a second section, said first and second sections constructed of a plurality of helically wound turns of said primary coil, said first section having a longitudinal axis, said second section having a longitudinal axis different than said first section, wherein said second section is at least partially surrounded by said first section and wherein the overall secondary form of the vaso-occlusive device is self-forming in the approximate shape of a sphere or ovoid.
Claim 16
Dependent Claim
104 words
A vaso-occlusive device comprising a primary coil constructed of a plurality of helically wound turns of a biocompatible wire and having a secondary form with at least a first section and a second section, said first and second sections constructed of a plurality of helically wound turns of said primary coil, said first section having a longitudinal axis, said second section having a longitudinal axis different than said first section, wherein said second section is at least partially surrounded by said first section and wherein the overall secondary form of the vaso-occlusive device is self-forming in the approximate shape of a sphere or ovoid.
Claim 17
Dependent Claim
23 words
The device of claim 14 further comprising a reinforcement which runs from the distal end to the proximal end of the primary coil.
Claim 18
Dependent Claim
10 words
The device of claim 15 wherein the reinforcement is wire.
Claim 19
Dependent Claim
22 words
The device of claim 14 comprising a metal selected from the group consisting of platinum, palladium, rhodium, gold, tungsten, and their alloys.
Claim 20
Dependent Claim
12 words
The device of claim 17 comprising an alloy of platinum and tungsten.
Claim 21
Dependent Claim
19 words
The device of claim 14 comprising an alloy selected from the group consisting of stainless steels and super-elastic alloys.
Claim 22
Dependent Claim
10 words
The device of claim 19 wherein the alloy is nitinol.
Claim 23
Dependent Claim
12 words
The device of claim 14 comprising a polymer containing a radio-opaque filler.
Claim 24
Dependent Claim
10 words
The device of claim 14 additionally comprising attached polymeric fibers.
Claim 25
Dependent Claim
23 words
The device of claim 14 wherein the primary coil has regions which are relatively more flexible than other regions of the primary coil.
Claim 26
Dependent Claim
19 words
The device of claim 14 wherein the primary coil additionally comprises a deployment tip attached to the proximal end.
Claim 27
Dependent Claim
23 words
The device of claim 24 wherein the deployment tip comprises a mechanically detachable end adapted to attach to and detach from a pusher.
Claim 28
Dependent Claim
28 words
The device of claim 24 wherein the deployment tip comprises an electrolytically detachable end adapted to detach from a pusher by imposition of a current on said pusher.
References Cited (Backward Citations)
US2869858A
Cited
US3174851A
Cited
US3351463A
Cited
US3753700A
Cited
DE3203410A1
Cited
US4994069A
Cited
US5147400A
Cited
US5354295A
Cited
US5122136A
Cited
US5108407A
Cited
US5280888A
Cited
US5226911A
Cited
US5304194A
Cited
US5234437A
Cited
US5261916A
Cited
US5304195A
Cited
US5312415A
Cited
US5250071A
Cited
US5382259A
Cited
US5476472A
Cited
US5350397A
Cited
US5522836A
Cited
US5639277A
Cited
US5749891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-03-07 | 2003-09-06 | 2004-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-07 | 2007-09-06 | 2008-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-07 | 2011-09-06 | 2012-03-07 | $7700.00 | Window Closed / Lapsed |