EP0364420B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A device for transluminal implantation or extraction
Assignee: AMS Medinvent SA
•
Filing: 1989-09-22
•
Granted: 1992-11-11
•
Expires: 2009-09-22
Abstract
Abstract A device for transluminal implantation or extraction of a substantially tubular, radially selfexpanding stent (27), comprising a central tube (3) surrounded by an exterior tube (5) axially displaceable relative to the central tube (3), and a plurality of axially extending spring members (21) attached to the outer surface of said central tube (3) at the distal end thereof, said members (21) being substantially evenly distributed around the periphery of said tube (3) and capable of outward springing action of their front ends when retracting said exterior tube (5) from the distal end of said central tube (3).
Inventors
- 👤 Hans Ivar Wallstén
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-22 22:06
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/28; A61B17/29; A61F; A61F2/00; A61F2/95; A61B17/30; A61B2017/303; A61B18/00; A61B2018/00982; A61B2217/00; A61B2217/002; A61B2217/007; A61F2/9517; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/3009; A61F2250/00; A61F2250/0058; A61F2250/0091; A61M; A61M3/00; A61M3/02; A61M3/0279
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
135 words
A device for transluminal implantation or extraction of a substantially tubular, radially expandable stent (27), the device comprising a central tube (3) having distal and proximal ends, surrounded by an exterior tube (5) axially displaceable relative to the central tube (3), characterized by a plurality of axially extending gripping members (21) attached to the outer surface of said central tube (3) at the distal end thereof, said members being substantially evenly distributed around the periphery of said tube and capable of outward expanding action of their distal ends when retracting said exterior tube (5) from the distal end of said central tube (3), and capable of forming a gap between said members (21) and the central tube (3) when said exterior tube (5) is moved distally in an axial direction of said central tube (3).
Claim 2
Independent Claim
169 words
A device for transluminal implantation or extraction of a substantially tubular, radially expandable stent (27), the device comprising a central tube (3) having proximal and distal ends surrounded by an exterior tube (5) axially displaceable relative to the central tube (3), characterized in that said central tube (3) is provided with a proximally extending end section (25) at the distal end thereof the end section (25) having a larger diameter than the exterior tube (5), and a plurality of axially extending gripping members (21) attached to the outer surface of said exterior tube (5) at the distal end thereof, said members (21) being substantially evenly distributed around the periphery of said tube (5), and being capable of outward expanding action at their rear ends by moving the central tube (3) with its extending end section (25) axially forwardly, and capable of forming a gap between said members (21) and said exterior tube (5) by moving said central tube (3) proximally in an axial direction of said exterior tube (3).
Claim 3
Dependent Claim
38 words
A device according to claim 1 or 2, further comprising handle means (9; 11) at the rear ends of said tubes (3;5) enabling axial relative movement between said tubes for releasing or folding of said gripping members (21).
Claim 4
Dependent Claim
20 words
A device according to claim 1, 2 or 3, wherein the number of gripping members (27) is 3 or 4.
Claim 5
Dependent Claim
30 words
A device according to claim 1, wherein said central tube (3) is provided with radial openings (23) at the distal end thereof enabling proper positioning of the device under operation.
Claim 6
Dependent Claim
32 words
A device according to claim 1, wherein said central tube (3), at least at the distal end thereof, is made of a transparent material enabling proper positioning of the device under operation.
Claim 7
Dependent Claim
29 words
A device according to claim 2, wherein one of tubes (3,5) is provided with radial openings at the distal end thereof enabling proper positioning of the device under operation.
Claim 8
Dependent Claim
27 words
A device according to claim 2, wherein said tubes (3,5) have radial, juxtaposed openings at the distal end thereof enabling proper positioning of the device under operation.
Claim 9
Dependent Claim
30 words
A device according to claim 2, wherein said tubes (3,5), at least at the distal end thereof, are made of transparent material enabling proper positioning of the device under operation.
Claim 10
Independent Claim
32 words
A device according to any of claims 5 to 9, further comprising viewing means such as an endoscope or a telescope (7) positioned inside the central tube (3) and axially displaceable therein.
Claim 11
Independent Claim
24 words
A device according to any preceding claim, wherein the concentric members (3,5,7) are made of flexible materials enabling bending of the device under operation.
Claim 12
Independent Claim
24 words
A device according to any preceding claim, wherein said gripping members are constituted by springing members (21) capable of outward springing action when released.
Claim 13
Dependent Claim
40 words
The combination of the device according to claim 1 and a substantially tubular, radially expandable stent (27), characterized in that said stent (27) is positionable between said gripping members (21) and said central tube (3) is in a contracted state.
Claim 14
Dependent Claim
39 words
The combination of the device according to claim 2 and a substantially tubular, radially expandable stent, characterized in that said stent (27) is positionable between said gripping members (21) and said exterior tube (5) is in a contracted state.
Claim 15
Dependent Claim
17 words
The combination according to claim 13 or 14, wherein said stent (27) is of the self-expanding type.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.