Patent US6165178A successfully refreshed from Google Patents.
US6165178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast detaching electrically isolated implant
Assignee: Stryker European Operations Holdings LLC
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Filing: 1998-09-01
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Granted: 2000-12-26
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Expires: 2018-09-01
Abstract
Abstract This is an implant for placement in the human body and an assembly for so placing that implant. Most desirably, it is an implant for use in the vasculature of the human body and is used to occlude some space in that vasculature as a portion of a treatment regimen. The implant itself is preferably a component of a deployment device using an electrolytically severable joint. The implant is electrically isolated from the electrolytically severable joint by a highly resistive or insulative layer. Such isolation and minimization of the conductive pathway from the placement apparatus to the body's fluids appears to enhance the susceptibility of the electrolytic joint to quick erosion and detachment of the implant from the deployment media. Although the implant itself is preferably a vaso-occlusive device, it may instead be a stent, a vena cava filter, or other implant which may be installed in this manner.
Inventors
- 👤 Mehran Bashiri
- 👤 Michael P. Wallace
- 👤 Pete Phong Pham
- 👤 Cong Thach
- 👤 Chad C. Roue
- 👤 Joseph C. Eder
- 👤 Erik T. Engelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:44
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12099; A61B17/12109; A61B17/12113; A61B17/12131; A61B17/1214; A61B17/12145; A61B17/1215; A61B17/12154; A61F2/01; A61F2/0105; A61B2017/1205; A61B2017/12054; A61B2017/12063; A61F2/011; A61F2002/016; A61F2002/9505; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0028; A61F2230/005; A61F2230/0063; A61F2230/0069; A61F2230/0091
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
120 words
An implant assembly for placement of an implant in the human body comprising: (a) an implant member having a proximal end and a distal end, and (b) a wire having an electrolytically severable joint situated to release said implant member upon application of electrical energy to said electrolytically severable joint, said electrolytically severable joint being relatively more susceptible to electrolysis in an ionic solution than is said implant member, wherein a distal end of said wire is covered with a first insulative or highly resistive layer and said wire distal end is attached to said implant member proximal end by a second insulative or highly resistive layer, and wherein said implant member is electrically isolated from said electrolytically severable joint.
Claim 2
Dependent Claim
120 words
An implant assembly for placement of an implant in the human body comprising: (a) an implant member having a proximal end and a distal end, and (b) a wire having an electrolytically severable joint situated to release said implant member upon application of electrical energy to said electrolytically severable joint, said electrolytically severable joint being relatively more susceptible to electrolysis in an ionic solution than is said implant member, wherein a distal end of said wire is covered with a first insulative or highly resistive layer and said wire distal end is attached to said implant member proximal end by a second insulative or highly resistive layer, and wherein said implant member is electrically isolated from said electrolytically severable joint.
Claim 3
Dependent Claim
27 words
The implant assembly of claim 1 wherein said electrical isolation is due to at least one of said first or said second insulative or highly resistive layers.
Claim 4
Dependent Claim
20 words
The implant assembly of claim 2 wherein said first or said second insulative or highly resistive layer comprises tantalum oxide.
Claim 5
Dependent Claim
20 words
The implant assembly of claim 2 wherein said first or said second insulative or highly resistive layer comprises a polymer.
Claim 6
Dependent Claim
20 words
The implant assembly of claim 4 wherein said first or said second insulative or highly resistive layer comprises a thermoplastic.
Claim 7
Dependent Claim
31 words
The implant assembly of claim 4 wherein said first or said second insulative or highly resistive layer comprises a member selected from the group consisting of polyethylene, polypropylene, polyamides, and polyethyleneterephthalate.
Claim 8
Dependent Claim
21 words
The implant assembly of claim 2 wherein said first or said second insulative or highly resistive layer comprises an oxide-forming material.
Claim 9
Dependent Claim
13 words
The implant assembly of claim 1 wherein the implant member is a stent.
Claim 10
Dependent Claim
15 words
The implant assembly of claim 1 wherein the implant member comprises a vena cava filter.
Claim 11
Dependent Claim
13 words
The implant assembly of claim 1 wherein the implant member comprises a braid.
Claim 12
Dependent Claim
15 words
The implant assembly of claim 1 wherein the implant member comprises a helically wound coil.
Claim 13
Dependent Claim
27 words
The implant assembly of claim 11 further comprising a stretch-resistant member extending at least partially from said implant member proximal end to said implant member distal end.
Claim 14
Dependent Claim
24 words
The implant assembly of claim 12 wherein the stretch-resistant member comprises a member selected from the group consisting of polyethylene, polypropylene, polyamides, and polyethyleneterephthalate.
Claim 15
Dependent Claim
30 words
The implant assembly of claim 12 further including a helically wound coil situated proximally in the lumen of said helically wound implant member and fixedly attached to said stretch-resistant member.
Claim 16
Dependent Claim
30 words
The implant assembly of claim 14 wherein said helically wound coil situated proximally in the lumen of said helically wound implant member is welded to said helically wound implant member.
Claim 17
Dependent Claim
27 words
The implant assembly of claim 14 wherein said helically wound coil situated proximally in the lumen of said helically wound implant member additionally comprises a polymeric region.
Claim 18
Dependent Claim
39 words
The implant assembly of claim 16 wherein said helically wound coil situated proximally in the lumen of said helically wound implant member is fixedly attached to said stretch resistant member via a distal loop in said helically wound coil.
Claim 19
Dependent Claim
17 words
The implant assembly of claim 1 wherein said wire proximal end has a radio-opaque member placed thereon.
Claim 20
Dependent Claim
18 words
The implant assembly of claim 1 additionally comprising an insulative plug disposed in the implant member proximal end.
Claim 21
Dependent Claim
23 words
The implant assembly of claim 1 additionally comprising at least one proximal coil disposed on said wire proximal of said electrolytically severable joint.
Claim 22
Dependent Claim
28 words
The implant assembly of claim 20 additionally comprising a plug disposed on said wire adjacent said electrolytically severable joint and distal of said at least one proximal coil.
Claim 23
Dependent Claim
30 words
The implant assembly of claim 21 wherein a proximal insulative or highly resistive outer layer is at least partially disposed about said at least one proximal coil, and said plug.
Claim 24
Dependent Claim
20 words
The implant assembly of claim 1 additionally comprising a plug disposed on said wire proximal of said electrolytically severable joint.
Claim 25
Dependent Claim
12 words
The implant assembly of claim 23 wherein said plug comprises a polymer.
Claim 26
Dependent Claim
26 words
The implant assembly of claim 23 wherein said plug comprises a distal surface which is disposed at a non-perpendicular angle to an axis of said wire.
Claim 27
Dependent Claim
39 words
The implant assembly of claim 1 additionally comprising a distal coil disposed on said distal end of said wire and wherein said wire distal end and said distal coil are covered with said first insulative or highly resistive layer.
Claim 28
Dependent Claim
12 words
The implant assembly of claim 26 wherein said distal coil is radio-opaque.
Claim 29
Independent Claim
181 words
A method for introduction of an implant into a space within a human body comprising: 1.) placing a delivery catheter distal tip near a selected space within the human body, 2.) introducing an implant assembly comprising: (a) an implant member having a proximal end and a distal end, and (b) a wire having an electrolytically severable joint situated to release said implant member upon application of electrical energy to said electrolytically severable joint, said electrolytically severable joint being relatively more susceptible to electrolysis in an ionic solution than is said implant member, wherein a distal coil is disposed on a distal end of said wire, wherein said wire distal end and said distal coil are covered with a first insulative or highly resistive layer, wherein said wire distal end is attached to said implant member proximal end by a second insulative or highly resistive layer, and wherein said implant member is electrically isolated from said electrolytically severable joint, into said catheter, 3.) placing said implant member into said selected space, and 4.) electrolytically detaching said implant member from said implant assembly.
Claim 30
Independent Claim
181 words
A method for introduction of an implant into a space within a human body comprising: 1.) placing a delivery catheter distal tip near a selected space within the human body, 2.) introducing an implant assembly comprising: (a) an implant member having a proximal end and a distal end, and (b) a wire having an electrolytically severable joint situated to release said implant member upon application of electrical energy to said electrolytically severable joint, said electrolytically severable joint being relatively more susceptible to electrolysis in an ionic solution than is said implant member, wherein a distal coil is disposed on a distal end of said wire, wherein said wire distal end and said distal coil are covered with a first insulative or highly resistive layer, wherein said wire distal end is attached to said implant member proximal end by a second insulative or highly resistive layer, and wherein said implant member is electrically isolated from said electrolytically severable joint, into said catheter, 3.) placing said implant member into said selected space, and 4.) electrolytically detaching said implant member from said implant assembly.
Claim 31
Dependent Claim
115 words
An implant assembly for placement of an implant in the human body comprising: (a) an implant member having a proximal end and a distal end, and (b) a wire having an electrolytically severable joint situated to release said implant member upon application of electrical energy to said electrolytically severable joint, said electrolytically severable joint being relatively more susceptible to electrolysis in an ionic solution than is said implant member, wherein a distal coil is disposed on a distal end of said wire, wherein said wire distal end is attached to said implant member proximal end by an insulative or highly resistive layer, and wherein said implant member is electrically isolated from said electrolytically severable joint.
Claim 32
Dependent Claim
115 words
An implant assembly for placement of an implant in the human body comprising: (a) an implant member having a proximal end and a distal end, and (b) a wire having an electrolytically severable joint situated to release said implant member upon application of electrical energy to said electrolytically severable joint, said electrolytically severable joint being relatively more susceptible to electrolysis in an ionic solution than is said implant member, wherein a distal coil is disposed on a distal end of said wire, wherein said wire distal end is attached to said implant member proximal end by an insulative or highly resistive layer, and wherein said implant member is electrically isolated from said electrolytically severable joint.
Claim 33
Dependent Claim
19 words
The implant assembly of claim 29 wherein said electrical isolation is due to said insulative or highly resistive layer.
Claim 34
Dependent Claim
16 words
The implant assembly of claim 29 wherein said insulative or highly resistive layer comprises a polymer.
Claim 35
Dependent Claim
17 words
The implant assembly of claim 29 wherein said insulative or highly resistive layer comprises an oxide-forming material.
References Cited (Backward Citations)
US4010759A
Cited
US4739768A
Cited
US4739768B2
Cited
US4739768B1
Cited
US4945342A
Cited
US4884579A
Cited
US4994069A
Cited
US5649951A
Cited
US5122136A
Cited
US5540680A
Cited
US5855578A
Cited
US5895385A
Cited
US5354295A
Cited
US5919187A
Cited
US5944714A
Cited
US5925037A
Cited
US5928226A
Cited
US5304195A
Cited
US5234437A
Cited
US5261916A
Cited
US5925062A
Cited
US5250071A
Cited
US5312415A
Cited
US5350397A
Cited
US5891130A
Cited
US5632771A
Cited
US5423829A
Cited
US5624449A
Cited
US5522836A
Cited
US5891128A
Cited
EP0719522A1
Cited
US5582619A
Cited
US5743905A
Cited
US5733294A
Cited
WO1997048351A1
Cited
WO1998002100A1
Cited
WO1998004198A1
Cited
WO1998004315A1
Cited
US5895391A
Cited
US5800454A
Cited
US5911717A
Cited
US5916235A
Cited
US5984929A
Cited
US5925060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-12-26 | 2004-06-26 | 2004-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-26 | 2008-06-26 | 2008-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-26 | 2012-06-26 | 2012-12-26 | $7700.00 | Window Closed / Lapsed |