US5800453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable embolic coil assembly using interlocking hooks and slots
Assignee: Target Therapeutics Inc
•
Filing: 1995-03-07
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Granted: 1998-09-01
•
Expires: 2015-03-07
Abstract
Abstract This invention is a surgical instrument and specifically is a device for delivering embolic coils to a selected site within the vasculature or other lumen of a human body via use of a catheter. The invention includes the coils as well. In particular, the device uses embolic coils having a receiving slot on one end of the coil; a catheter control wire or pusher guidewire having a hook which cooperatingly engages the coil's receiving slot is used as a coil pusher to eject the coil at the chosen site. The coils of this invention may also be placed within the lumen with a catheter in a nose-to-tail fashion and pushed into the body lumen. Pushing the coil assembly via the pusher from the distal end of the catheter body uncouples the most distal coil.
Inventors
- 👤 Son Gia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:28
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M25/0905; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12131; A61B17/1214; A61B17/12145; A61B2017/1205; A61B2017/12054; A61B2017/12068; A61B90/00; A61B90/39; A61F; A61F2/00; A61F2/01; A61F2/011; A61F2002/016; A61F2230/00; A61F2230/0063; A61F2230/0091
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
128 words
A detachable coil assembly for use in occluding a selected vascular site comprising a coil having helical coil windings with an axis, a distal end, and a proximal end; and having an interior slot located adjacent at least one of the proximal and distal ends of said coil windings wherein the interior slot is an open receiving slot located between the proximal and distal coil winding ends; and having a coil cap which is formed from solder, epoxy, fused coil material, or other filling material, and wherein said open receiving slot is within said cap and is generally perpendicular to the coil axis, and wherein the open receiving slot will accept a hook adapted both to enter the receiving slot and also to exit the open receiving slot.
Claim 2
Dependent Claim
128 words
A detachable coil assembly for use in occluding a selected vascular site comprising a coil having helical coil windings with an axis, a distal end, and a proximal end; and having an interior slot located adjacent at least one of the proximal and distal ends of said coil windings wherein the interior slot is an open receiving slot located between the proximal and distal coil winding ends; and having a coil cap which is formed from solder, epoxy, fused coil material, or other filling material, and wherein said open receiving slot is within said cap and is generally perpendicular to the coil axis, and wherein the open receiving slot will accept a hook adapted both to enter the receiving slot and also to exit the open receiving slot.
Claim 3
Dependent Claim
12 words
The assembly of claim 1 where the coil is a helical coil.
Claim 4
Dependent Claim
17 words
The assembly of claim 2 where the coil is biased to assume a random configuration after deployment.
Claim 5
Dependent Claim
12 words
The assembly of claim 2 where the coil has a straight configuration.
Claim 6
Dependent Claim
39 words
The assembly of claim 1 in which a hook adapted to enter a receiving slot in an adjacent detachable coil assembly extends distally from said coil distal end and said open receiving slot is adjacent the coil distal end.
Claim 7
Dependent Claim
43 words
The assembly of claim 1 in which a bent ribbon having a lip adapted to enter a receiving slot in an adjacent detachable coil assembly extends distally from said distal coil end and said open receiving slot is adjacent the coil distal end.
Claim 8
Dependent Claim
15 words
The assembly of claim 1 where the coil axis length is 0.5 to 100 cm.
Claim 9
Dependent Claim
17 words
The assembly of claim 1 where the coil outer diameter is between 0.25 mm and 1.8 mm.
Claim 10
Dependent Claim
151 words
A combination pusher assembly-coil for use in occluding a selected vascular site comprising: (a) a coil having helical coil windings and an axis, a distal end, and a proximal end; and also having an open receiving slot that is located adjacent at least one of the proximal and distal ends and is located between windings of the coil and said open receiving slot is generally perpendicular to the coil axis, and wherein the open receiving slot will accept a hook adapted both to enter the open receiving slot and also to exit the open receiving slot; and (b) a pusher assembly comprising a core wire having proximal and distal ends and adapted to fit within a catheter sheath and having a hook extending from the core wire distal end, said hook adapted to enter the open receiving slot in at least one of said proximal and distal ends of said coil.
Claim 11
Dependent Claim
151 words
A combination pusher assembly-coil for use in occluding a selected vascular site comprising: (a) a coil having helical coil windings and an axis, a distal end, and a proximal end; and also having an open receiving slot that is located adjacent at least one of the proximal and distal ends and is located between windings of the coil and said open receiving slot is generally perpendicular to the coil axis, and wherein the open receiving slot will accept a hook adapted both to enter the open receiving slot and also to exit the open receiving slot; and (b) a pusher assembly comprising a core wire having proximal and distal ends and adapted to fit within a catheter sheath and having a hook extending from the core wire distal end, said hook adapted to enter the open receiving slot in at least one of said proximal and distal ends of said coil.
Claim 12
Dependent Claim
12 words
The assembly of claim 9 where the coil is a helical coil.
Claim 13
Dependent Claim
17 words
The assembly of claim 10 where the coil is biased to assume a random configuration after deployment.
Claim 14
Dependent Claim
12 words
The assembly of claim 10 where the coil has a straight configuration.
Claim 15
Dependent Claim
17 words
The assembly of claim 9 additionally comprising a catheter sheath disposed about the pusher assembly and coil.
Claim 16
Dependent Claim
11 words
The assembly of claim 9 additionally comprising more than one coil.
Claim 17
Dependent Claim
18 words
The assembly of claim 9 where the hook is a wire hook adapted to enter said receiving slot.
Claim 18
Dependent Claim
21 words
The assembly of claim 9 where the hook is a bent ribbon having a lip adapted to enter said receiving slot.
References Cited (Backward Citations)
US4739768A
Cited
US4739768B2
Cited
US4739768B1
Cited
US4781177A
Cited
US5002556A
Cited
US4813934B1
Cited
US4813934A
Cited
US4957501A
Cited
US4884579A
Cited
EP0341039A1
Cited
US4832055A
Cited
US4994069A
Cited
US5174276A
Cited
US5192301A
Cited
US5062829A
Cited
US5122136A
Cited
US5064434A
Cited
US5108407A
Cited
US5098440A
Cited
US5133731A
Cited
US5167624A
Cited
US5109867A
Cited
US5217484A
Cited
US5261916A
Cited
US5304195A
Cited
US5234437A
Cited
US5263964A
Cited
US5312415A
Cited
US5250071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-31 | 2002-03-02 | 2002-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-31 | 2006-03-02 | 2006-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-31 | 2010-03-02 | 2010-09-01 | $7700.00 | Window Closed / Lapsed |