EP0717969A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Implant delivery assembly with expandable coupling/decoupling mechanism
Assignee: Boston Scientific Ltd Barbados
•
Filing: 1995-12-19
•
Granted: —
•
Expires: 2015-12-19
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
EP
Data Source
google_patents
Last Synchronized
2026-10-23 20:52
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: 17
Claim 1
Independent Claim
112 words
An occlusive implant delivery assembly for occluding a site in a mammal, said assembly comprising: an occlusive implant; a pusher having a proximal section and a distal section; a coupling having first and second portions, said first portion being coupled to said distal section of the pusher and said second portion being coupled to said implant; an inflatable member having a proximal portion and a distal portion, said proximal portion being coupled to said distal section of the pusher, at least a portion of said inflatable member being disposed in said coupling such that when inflated, it expands the coupling and decouples the coupling from one of the implant and the pusher.
Claim 2
Dependent Claim
20 words
The assembly of claim 1, wherein said coupling is a split tube having slots formed therein in the axial direction.
Claim 3
Dependent Claim
28 words
The assembly of claim 1 or 2, wherein said coupling includes segments spaced from one another in the circumferential direction, said segments being detachably coupled to said pusher.
Claim 4
Dependent Claim
28 words
The assembly of claim 1 or 2, wherein said coupling includes segments spaced from one another in the circumferential direction, said segments being detachably coupled to said coil.
Claim 5
Dependent Claim
74 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 proximal section and a distal section; an inflatable member having a first portion coupled to said distal section of the pusher and a second portion frictionally held in said tubular portion when deflated such that upon inflation of said inflatable member said implant and member tend to separate.
Claim 6
Dependent Claim
23 words
The assembly of claim 5, wherein said second portion of said inflatable member has a tapered configuration when said inflatable member is inflated.
Claim 7
Dependent Claim
31 words
The assembly of claim 5 or 6, wherein said inflatable member has a plurality of ribs that extend radially outward and engage said tubular portion when said inflatable member is deflated.
Claim 8
Dependent Claim
14 words
The assembly of claim 7, wherein said ribs further extend in a circumferential direction.
Claim 9
Dependent Claim
27 words
The assembly of claim 8, wherein said implant comprises a coil having multiple turns and selected ones of said ribs extend between selected ones of said turns.
Claim 10
Dependent Claim
34 words
The assembly of claim 9, further including a core member that extends within said pusher and into said inflatable member, said core member being sized to urge said inflatable member against said tubular portion.
Claim 11
Dependent Claim
39 words
The assembly of any one of claims 5 to 10, further including a core member that extends within said pusher and into said inflatable member, said core member being sized to urge said inflatable member against said tubular portion.
Claim 12
Dependent Claim
60 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 proximal section and a distal section; a core member slidably disposed within said pusher and extending into said tubular portion; and a locking member being releasably coupled to said coil and said core member.
Claim 13
Dependent Claim
71 words
The assembly of claim 12, wherein said locking member comprises an elastomeric ring and said core member extends into said ring, said core member including a locking portion and a tapered portion, said locking portion having a diameter that exceeds the inner diameter of the ring when the ring is in a relaxed state, said tapered portion tapers to an outer diameter that is less than that of said locking portion.
Claim 14
Dependent Claim
48 words
The assembly of claim 13, 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 15
Dependent Claim
45 words
The assembly of claim 12, wherein said locking member comprises a flexible sleeve, and said core member extends into said sleeve and is secured thereto, said sleeve being configured so that when axially compressed, it expands radially against the inner surface of the tubular portion.
Claim 16
Dependent Claim
14 words
The assembly of any one of the preceding claims, wherein said implant is coil.
Claim 17
Dependent Claim
32 words
The assembly of any one of the preceding claims, wherein the pusher includes a passage formed therethrough and said inflatable member has an inlet, said passage being fluidly coupled to said inlet.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.