US6238415B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implant delivery assembly with expandable coupling/decoupling mechanism
Assignee: Stryker European Operations Holdings LLC
•
Filing: 1998-03-03
•
Granted: 2001-05-29
•
Expires: 2018-03-03
Abstract
Abstract An occlusive implant delivery assembly includes a rapid response decoupling or detachment mechanism that does not effect significant migration of the implant during release. The assembly includes an occlusive implant device, such as an embolic coil, a pusher or device to carry the implant to the selected location, and an expandable coupling-decoupling mechanism for releasing the implant at the selected site. The mechanical construction provides rapid release times. In addition, the releasing mechanism generally operates without exerting any significant force on the implant, thereby avoiding any significant displacement of the implant during release.
Inventors
- 👤 Ivan Sepetka
- 👤 U. Hiram Chee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:57
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12131; A61B17/1214; A61B2017/1205; A61B2017/12054; A61B2017/12068; A61B2017/12081
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
89 words
An occlusive implant delivery assembly for occluding a site in a mammal, said assembly comprising: an occlusive implant having a tubular portion; a pusher having a distal section; and an extendable member coupled to said distal section of the pusher and frictionally held in said tubular portion when not extended, such that during extension of said extendable member, said implant separates from said pusher, said extendable member further having a plurality of ribs that extend radially outward and engage said tubular portion when said extendable member is not extended.
Claim 2
Dependent Claim
89 words
An occlusive implant delivery assembly for occluding a site in a mammal, said assembly comprising: an occlusive implant having a tubular portion; a pusher having a distal section; and an extendable member coupled to said distal section of the pusher and frictionally held in said tubular portion when not extended, such that during extension of said extendable member, said implant separates from said pusher, said extendable member further having a plurality of ribs that extend radially outward and engage said tubular portion when said extendable member is not extended.
Claim 3
Dependent Claim
15 words
The assembly of claim 1 , wherein said ribs further extend in a circumferential direction.
Claim 4
Dependent Claim
28 words
The assembly of claim 2 , wherein said implant comprises a coil having multiple turns and selected ones of said ribs extend between selected ones of said turns.
Claim 5
Dependent Claim
30 words
The assembly of claim 3 , further including a core member positioned inside said extendable member, said core member being sized to urge said extendable member against said tubular portion.
Claim 6
Dependent Claim
27 words
The assembly of claim 3 , further including a core member positioned inside said extendable member, extension of said core member mediating extension of said extendable member.
Claim 7
Dependent Claim
17 words
The assembly of claim 1 wherein said tubular portion of said occlusive implant defines an interior lumen.
Claim 8
Dependent Claim
72 words
An occlusive implant delivery assembly for occluding a site in a mammal, said assembly comprising: an occlusive implant having a tubular portion; a pusher having a distal section; an extendable member coupled to said distal section of the pusher and frictionally held in said tubular portion when not extended such that during extension of said extendable member, said implant separates from said pusher; and a core member positioned within said extendable member.
Claim 9
Dependent Claim
72 words
An occlusive implant delivery assembly for occluding a site in a mammal, said assembly comprising: an occlusive implant having a tubular portion; a pusher having a distal section; an extendable member coupled to said distal section of the pusher and frictionally held in said tubular portion when not extended such that during extension of said extendable member, said implant separates from said pusher; and a core member positioned within said extendable member.
Claim 10
Dependent Claim
21 words
The assembly of claim 7 , wherein said core member is sized to urge said extendable member against said tubular portion.
Claim 11
Dependent Claim
18 words
The assembly of claim 7 , wherein extension of said core member mediates extension of said extendable member.
Claim 12
Dependent Claim
17 words
The assembly of claim 7 wherein said tubular portion of said occlusive implant defines an interior lumen.
Claim 13
Dependent Claim
124 words
An occlusive implant delivery assembly for occluding a site in a mammal, said assembly comprising: an occlusive implant having a tubular portion, a pusher having a distal section; a retractable core member slidably disposed within said pusher and extending into said tubular portion; and a locking member releasably coupled to the interior of said tubular portion; where said core member is slidably engageable to said locking member; where said pusher is engageable with said occlusive implant and allows delivery of said implant through a delivery sheath and into said site when said core member is extended and engaged with said locking member, whereby during retraction of said core member, said locking member uncouples from said tubular portion and said implant uncouples from said pusher.
Claim 14
Dependent Claim
124 words
An occlusive implant delivery assembly for occluding a site in a mammal, said assembly comprising: an occlusive implant having a tubular portion, a pusher having a distal section; a retractable core member slidably disposed within said pusher and extending into said tubular portion; and a locking member releasably coupled to the interior of said tubular portion; where said core member is slidably engageable to said locking member; where said pusher is engageable with said occlusive implant and allows delivery of said implant through a delivery sheath and into said site when said core member is extended and engaged with said locking member, whereby during retraction of said core member, said locking member uncouples from said tubular portion and said implant uncouples from said pusher.
Claim 15
Dependent Claim
11 words
The assembly of claim 11 wherein said implant comprises a coil.
Claim 16
Dependent Claim
47 words
The assembly of claim 11 wherein said locking member comprises an elastomeric ring and said core member extends into said ring, said core member including a locking portion having a diameter that exceeds the inner diameter of the ring when the ring is in a relaxed state.
Claim 17
Dependent Claim
48 words
The assembly of claim 11 wherein said core member has a proximal end portion, a distal end portion, and a stop member positioned along said distal end portion, said proximal end portion having a diameter greater than the inner diameter of said ring when in a relaxed state.
Claim 18
Dependent Claim
17 words
The assembly of claim 11 wherein said tubular portion of said occlusive implant defines an interior lumen.
Claim 19
Dependent Claim
72 words
An implant delivery assembly for occluding a site in a mammal, the assembly comprising: an occlusive implant, a pusher having a proximal section and a distal section, a selectively operable coupling for attaching the implant to the pusher distal section, said coupling operable by fluid pressure so that when a sufficient amount of fluid pressure is applied to the coupling, the fluid pressure causes the occlusive implant to separate from the pusher.
Claim 20
Dependent Claim
72 words
An implant delivery assembly for occluding a site in a mammal, the assembly comprising: an occlusive implant, a pusher having a proximal section and a distal section, a selectively operable coupling for attaching the implant to the pusher distal section, said coupling operable by fluid pressure so that when a sufficient amount of fluid pressure is applied to the coupling, the fluid pressure causes the occlusive implant to separate from the pusher.
Claim 21
Dependent Claim
47 words
The implant delivery assembly of claim 16 wherein the coupling is a locking member that holds the occlusive implant during delivery and releases the occlusive implant upon the application of the fluid pressure such that the occlusive implant detaches from the pusher at the desired delivery site.
Claim 22
Dependent Claim
81 words
The implant delivery assembly of claim 17 wherein the locking member is selectively operable between a delivery position, wherein the implant is attached to the pusher, and a release position, whereby the implant is detached from the pusher, at least said proximal section of the pusher further comprising a fluid delivery lumen in fluid communication with the coupling, said lumen adapted to deliver fluid pressure to the coupling so that the coupling changes from the delivery position to the release position.
Claim 23
Dependent Claim
35 words
The implant delivery assembly of claim 17 wherein the occlusive implant is a coil having a proximal end and a distal end, wherein the proximal end of the coil is adapted to engage the coupling.
Claim 24
Dependent Claim
28 words
The implant delivery assembly of claim 17 wherein the occlusive implant is a coil and further comprises an attaching member located on a proximal end of said coil.
Claim 25
Dependent Claim
29 words
The implant delivery assembly of claim 17 wherein the fluid pressure is delivered through a lumen in the assembly from the proximal section of the pusher to the coupling.
Claim 26
Dependent Claim
13 words
The implant delivery assembly of claim 16 wherein the fluid comprises a gas.
Claim 27
Dependent Claim
13 words
The implant delivery assembly of claim 16 wherein the fluid comprises a liquid.
Claim 28
Dependent Claim
13 words
The implant delivery assembly of claim 16 wherein the pusher comprises a tube.
Claim 29
Dependent Claim
14 words
The implant delivery assembly of claim 24 wherein the tube is a metal tube.
Claim 30
Dependent Claim
14 words
The implant delivery assembly of claim 24 wherein the tube is a plastic tube.
Claim 31
Dependent Claim
13 words
The implant delivery assembly of claim 16 wherein the coupling comprises a tube.
Claim 32
Dependent Claim
14 words
The implant delivery assembly of claim 27 wherein the coupling is a metal tube.
Claim 33
Dependent Claim
14 words
The implant delivery assembly of claim 27 wherein the coupling is a plastic tube.
Claim 34
Independent Claim
29 words
An apparatus for use in occluding a body cavity comprising: a wire; a detachable occlusive implant coupled to said wire, said implant detachable from said wire by fluid pressure.
Claim 35
Independent Claim
29 words
An apparatus for use in occluding a body cavity comprising: a wire; a detachable occlusive implant coupled to said wire, said implant detachable from said wire by fluid pressure.
Claim 36
Dependent Claim
11 words
The apparatus of claim 30 wherein the implant is a coil.
Claim 37
Dependent Claim
12 words
The apparatus of claim 31 wherein the coil is a platinum coil.
Claim 38
Dependent Claim
18 words
The apparatus of claim 31 wherein the coil has a length of between about 0.5 to 60 cm.
Claim 39
Independent Claim
90 words
A method for rapidly detaching an occlusive implant into a mammalian site comprising the steps of: a) introducing an assembly comprising i. the occlusive implant, ii. a pusher having a distal section and a proximal section, and iii. a coupling, wherein the occlusive implant is attached to the pusher distal section at the coupling, into the mammalian site, and b) delivering the occlusive implant to the mammalian site by applying sufficient fluid pressure to the assembly so that the occlusive implant disengages from the pusher distal section at the coupling.
Claim 40
Independent Claim
90 words
A method for rapidly detaching an occlusive implant into a mammalian site comprising the steps of: a) introducing an assembly comprising i. the occlusive implant, ii. a pusher having a distal section and a proximal section, and iii. a coupling, wherein the occlusive implant is attached to the pusher distal section at the coupling, into the mammalian site, and b) delivering the occlusive implant to the mammalian site by applying sufficient fluid pressure to the assembly so that the occlusive implant disengages from the pusher distal section at the coupling.
Claim 41
Independent Claim
55 words
A method for rapidly detaching an occlusive implant into a body cavity comprising the steps of: a) introducing into a body cavity an assembly comprising an occlusive implant that is detachably affixed to a pusher, and b) delivering fluid pressure through the pusher such that the implant detaches from the pusher by the fluid pressure.
Claim 42
Independent Claim
55 words
A method for rapidly detaching an occlusive implant into a body cavity comprising the steps of: a) introducing into a body cavity an assembly comprising an occlusive implant that is detachably affixed to a pusher, and b) delivering fluid pressure through the pusher such that the implant detaches from the pusher by the fluid pressure.
Claim 43
Dependent Claim
30 words
The method of claim 35 whereby said step of delivering fluid pressure causes the implant to rapidly detach from the pusher without any fluid pressure being applied to the implant.
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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) | 2004-05-28 | 2004-11-27 | 2005-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-05-28 | 2008-11-27 | 2009-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-05-28 | 2012-11-27 | 2013-05-29 | $7700.00 | Window Closed / Lapsed |