US5350397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axially detachable embolic coil assembly
Assignee: Target Therapeutics Inc
•
Filing: 1992-11-13
•
Granted: 1994-09-27
•
Expires: 2012-11-13
Abstract
Abstract This invention is a surgical instrument and specifically is a device for delivering an embolic coil to a selected site within a vessel in a human body via use of a catheter. In particular, the device involves an embolic coil having an enlarged member, such as a ball attached thereto which coil is released by forcing the enlarged member through an aperture in a socket situated on the distal end of a pusher assembly.
Inventors
- 👤 Thomas J. Palermo
- 👤 Phong Pham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:59
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12131; A61B17/1214; A61B17/12145; A61B17/12099; A61B17/12109; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1492; A61B2017/1205; A61B2018/00315; A61B2018/00345; A61B2018/00404; A61B2018/1495; A61F; A61F2/00; A61F2/01; A61F2/011; A61F2002/016; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0028; A61F2230/005; A61F2230/0058; A61F2230/0063; A61F2230/0091
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
133 words
A pusher-coil assembly for use in occluding a selected site within a vessel comprising: (a) a vasoocclusive coil having a proximal end and a distal end and having an enlarged member with a diameter, said enlarged member fixedly attached to the coil's proximal end; (b) a pusher housing having a distal end and having a socket at its distal end, said socket having a throat aperture diameter smaller than the diameter of the enlarged member within which the enlarged member is held; and (c) a plunger located within the pusher housing, said plunger axially movable relative to the pusher housing and coil from a first position to a second position, which axial movement pushes the coil and the enlarged member through the socket throat and thus uncouple the coil from the pusher housing.
Claim 2
Dependent Claim
133 words
A pusher-coil assembly for use in occluding a selected site within a vessel comprising: (a) a vasoocclusive coil having a proximal end and a distal end and having an enlarged member with a diameter, said enlarged member fixedly attached to the coil's proximal end; (b) a pusher housing having a distal end and having a socket at its distal end, said socket having a throat aperture diameter smaller than the diameter of the enlarged member within which the enlarged member is held; and (c) a plunger located within the pusher housing, said plunger axially movable relative to the pusher housing and coil from a first position to a second position, which axial movement pushes the coil and the enlarged member through the socket throat and thus uncouple the coil from the pusher housing.
Claim 3
Dependent Claim
12 words
The assembly of claim 1 wherein the enlarged member is a ball.
Claim 4
Dependent Claim
16 words
The assembly of claim 1 wherein the vasoocclusive coil is selected from helical, random, or straight.
Claim 5
Dependent Claim
10 words
The assembly of claim 1 wherein the socket is slotted.
Claim 6
Dependent Claim
11 words
The assembly of claim 1 wherein the socket throat is grooved.
Claim 7
Dependent Claim
20 words
The assembly of claim 1 wherein the plunger comprises a plunger wire adapted to move axially within the pusher housing.
Claim 8
Dependent Claim
75 words
A method for occluding a selected site within a vessel comprising the steps of: (a) accessing the site with a distal end of a catheter; (b) advancing the assembly of claim 2 through the catheter until the ball attached to the coil is located distally of the distal end of the catheter; (c) pushing the plunger against the ball to detach the coil from the pusher housing; and (d) withdrawing the catheter from the vessel.
References Cited (Backward Citations)
US3334629A
Cited
US4512338A
Cited
US4739768A
Cited
US4739768B2
Cited
US4739768B1
Cited
US4813934B1
Cited
US4813934A
Cited
US4957501A
Cited
US4884579A
Cited
US4994069A
Cited
US5122136A
Cited
US5108407A
Cited
US5109867A
Cited
US5217484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-26 | 1998-03-28 | 1998-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-26 | 2002-03-28 | 2002-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-26 | 2006-03-28 | 2006-09-27 | $7700.00 | Window Closed / Lapsed |