US7780726B2
Active / In Force
US
⏱️ 0.8 years remaining
Assembly for placing a prosthetic valve in a duct in the body
Assignee: Medtronic CV Luxembourg SARL
•
Filing: 2007-07-27
•
Granted: 2010-08-24
•
Expires: 2027-07-27
Abstract
Abstract The present invention is an assembly comprising a prosthetic valve to be implanted; a radially expandable stent comprising at least one zone intended to be expanded to allow the stent, in the expanded state, to bear against the wall of the body duct to be fitted with the valve, this bearing making it possible to immobilize this stent with respect to this wall; and means for mounting the valve with respect to the stent, making it possible to connect the valve to the stent in such a way that the placement of the stent allows the valve to be mounted in the body duct, and expansion means such as a balloon catheter being provided to trigger expansion of the stent at the implantation site. According to the invention, the valve and the stent are designed in such a way that, at the moment when the stent is expanded, the valve is situated outside the zone or zones of the stent that are subjected to said expansion means. The invention thus consists in separating the valve and said zone or zones to be expanded, so that the expansion of the stent can be effected with an expansion force suitable for perfect anchoring of this stent in the wall of the body duct to be fitted with the valve, and without any risk of destruction or damage of the valve.
Inventors
- 👤 Jacques Seguin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2403; A61F2/2412; A61F2/2418; A61F2220/00; A61F2220/0008; A61F2220/0016; A61F2220/0025; A61F2220/005; A61F2230/00; A61F2230/0063; A61F2230/0067; A61F2250/00; A61F2250/0058; A61F2250/006
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
104 words
A prosthetic valve assembly comprising: an implantable prosthetic valve; and a radially expandable stent comprising at least one expandable zone that is configured, in an expanded state, to bear against a wall of a native body lumen in a manner so as to resist migration and at least one zone that is configured not to bear against a wall of a native body lumen when the stent is in an expanded state, wherein the valve is mounted on the stent such that, when expanded, the valve is positioned substantially within the zone that does not bear against a wall of a native body lumen.
Claim 2
Dependent Claim
104 words
A prosthetic valve assembly comprising: an implantable prosthetic valve; and a radially expandable stent comprising at least one expandable zone that is configured, in an expanded state, to bear against a wall of a native body lumen in a manner so as to resist migration and at least one zone that is configured not to bear against a wall of a native body lumen when the stent is in an expanded state, wherein the valve is mounted on the stent such that, when expanded, the valve is positioned substantially within the zone that does not bear against a wall of a native body lumen.
Claim 3
Dependent Claim
21 words
The assembly of claim 1 , wherein the at least one expandable zone is configured for expansion by a balloon catheter.
Claim 4
Dependent Claim
54 words
The assembly of claim 1 , wherein the valve is axially movable with respect to the stent between a position of non-implantation outside the at least one expandable zone and a position of implantation, which it can reach after expansion of the stent, in which it is immobilized axially with respect to the stent.
Claim 5
Dependent Claim
31 words
The assembly of claim 3 , wherein the radially positioned fastening members are mounted on the valve, and wherein the fastening members are configured to be inserted into the body wall.
Claim 6
Dependent Claim
26 words
The assembly of claim 4 , wherein the fastening members are configured to insert into the body upon a pivoting of the valve about its axis.
Claim 7
Dependent Claim
29 words
The assembly of claim 4 , wherein the fastening members are configured to insert into the body upon a longitudinal movement of the valve with respect to the stent.
Claim 8
Dependent Claim
15 words
The assembly of claim 4 , wherein the fastening members comprise spikes, hooks or claws.
Claim 9
Dependent Claim
16 words
The assembly of claim 3 , wherein the valve includes burstable vesicles on a surface thereof.
Claim 10
Dependent Claim
13 words
The assembly of claim 8 , wherein the vesicles are filled with adhesive.
Claim 11
Dependent Claim
23 words
The assembly of claim 9 , wherein the vesicles are configured to burst when the valve is brought into its position of implantation.
Claim 12
Dependent Claim
49 words
The assembly of claim 3 , wherein at least one band is integrated in the peripheral wall of the valve, and wherein the at least one band has a shape memory, so that it keeps the valve pressed against the stent in the position of implantation of this valve.
Claim 13
Dependent Claim
12 words
The assembly of claim 11 , wherein the band comprises a wire.
Claim 14
Dependent Claim
13 words
The assembly of claim 11 , wherein the band is circular in shape.
Claim 15
Dependent Claim
13 words
The assembly of claim 11 , wherein the band is helical in shape.
Claim 16
Dependent Claim
13 words
The assembly of claim 3 , wherein the valve has conduits formed therein.
Claim 17
Dependent Claim
35 words
The assembly of claim 15 , wherein the expandable stent further comprises rods configured to engage and slide through the conduits as the valve moves from a position of non-implantation to a position of implantation.
Claim 18
Dependent Claim
29 words
The assembly of claim 16 , wherein the conduits and rods are configured such that the conduits are immobilized with respect to the rods in the position of implantation.
Claim 19
Dependent Claim
27 words
The assembly of claim 17 , further comprising wires connected to the rods and configured to pass through said conduits to guide said rods in the conduits.
Claim 20
Dependent Claim
16 words
The assembly of claim 1 , further comprising means for limiting the expansion of the valve.
Claim 21
Dependent Claim
34 words
The assembly of claim 1 , wherein the valve comprises a peripheral wall with a tapered diameter in the axial direction and the zone of the stent supporting the valve has a corresponding shape.
Claim 22
Dependent Claim
43 words
The assembly of claim 1 , wherein the stent comprises a middle portion having a smaller diameter than at end portions thereof, the valve having a shape corresponding to that zone of the stent in whose area it is intended to be mounted.
Claim 23
Dependent Claim
18 words
The assembly of claim 21 , wherein the middle portion of the stent foams two inverted truncated cones.
Claim 24
Dependent Claim
17 words
The assembly of claim 21 , wherein the middle portion of the stent forms an hourglass shape.
Claim 25
Dependent Claim
85 words
The assembly of claim 1 , wherein the valve has a peripheral wall and the stent has, in the distal continuation of that zone of the stent intended to receive the valve, a foldable portion movable between an extended position, in which it is situated in the distal continuation of said zone, and a folded position, in which it is placed against the inner face of the peripheral wall of the valve, and traps this peripheral wall between it and said zone of the stent.
Claim 26
Dependent Claim
19 words
The assembly of claim 24 , further comprising retaining means for keeping this foldable portion in a folded position.
Claim 27
Dependent Claim
29 words
The assembly of claim 25 , wherein said retaining means are formed by a wire made of a material which is rigid but has a degree of elastic flexibility.
Claim 28
Dependent Claim
23 words
The assembly of claim 1 , further comprising a sheath that comprises an impermeable biocompatible material and at least partially covers the stent.
Claim 29
Dependent Claim
24 words
The assembly of claim 27 , wherein the sheath has lateral openings that are configured to be positioned opposite the coronary ostia when implanted.
Claim 30
Dependent Claim
23 words
The assembly of claim 24 , further comprising a sheath that comprises an impermeable biocompatible material and at least partially covers the stent.
Claim 31
Dependent Claim
32 words
The assembly of claim 29 , wherein the foldable portion is formed by a continuation of the sheath forming a sleeve beyond the zone of the stent intended to receive the valve.
Claim 32
Dependent Claim
39 words
The assembly of claim 27 , further comprising an inflatable peripheral chamber configured to be inflated so as to substantially form a seal between the stent and the wall of the body lumen to be fitted with the valve.
Claim 33
Dependent Claim
30 words
The assembly of claim 31 , comprising a plurality of inflatable peripheral chambers positioned radially on the portion of the stent intended to bear against the native cardiac valvular ring.
Claim 34
Dependent Claim
33 words
The assembly of claim 1 , wherein the stent comprises a cylindrical portion that is configured to bear against the native cardiac valvular ring and a distal portion connected to the cylindrical portion.
Claim 35
Dependent Claim
41 words
The assembly of claim 1 , wherein the stent comprises a tapered proximal portion whose diameter decreases in the distal direction and that is configured to, upon implantation, bear against the wall of the ventricle or corresponding auricle of the heart.
Claim 36
Dependent Claim
47 words
The assembly of claim 34 , further comprising a supplementary bearing portion on the stent connected by rods to the distal portion or to the cylindrical portion, the rods configured of sufficient length so that, when implanted, the supplementary bearing portion is positioned beyond the coronary ostia.
Claim 37
Dependent Claim
16 words
The assembly of claim 1 , further comprising retractable hooks on the stent to minimize migration.
Claim 38
Dependent Claim
18 words
The assembly of claim 1 , wherein the stent comprises a portion configured to transmit high radial force.
Claim 39
Dependent Claim
56 words
A prosthetic valve assembly according to claim 1 , wherein, in the zone in which the valve is mounted, the stent can be expanded to a greater diameter than the valve, and wherein a variation in the diameter to which the stent is expanded does not substantially impact the diameter to which the valve is expanded.
Claim 40
Dependent Claim
32 words
A prosthetic valve assembly according to claim 26 , wherein the wire is made from a metal material having an undulated form and extending over the entire circumference of said foldable portion.
Claim 41
Dependent Claim
101 words
A prosthetic valve assembly comprising: an implantable prosthetic valve; and a radially expandable stent comprising an inflow zone that is configured, in an expanded state, to bear against a wall of the native cardiac annulus, an expandable valve supporting zone that projects radially inwardly from the inflow zone and into the ascending aorta, and an expandable outflow zone configured, in an expanded state, to bear against a wall of the ascending aorta above the location of the coronary ostia, wherein the valve is mounted on the stent such that, when expanded, the valve is positioned substantially within the valve supporting zone.
Claim 42
Dependent Claim
101 words
A prosthetic valve assembly comprising: an implantable prosthetic valve; and a radially expandable stent comprising an inflow zone that is configured, in an expanded state, to bear against a wall of the native cardiac annulus, an expandable valve supporting zone that projects radially inwardly from the inflow zone and into the ascending aorta, and an expandable outflow zone configured, in an expanded state, to bear against a wall of the ascending aorta above the location of the coronary ostia, wherein the valve is mounted on the stent such that, when expanded, the valve is positioned substantially within the valve supporting zone.
Claim 43
Dependent Claim
52 words
The assembly of claim 40 , wherein the valve is axially movable with respect to the stent between a position of non-implantation outside the valve supporting zone and a position of implantation, which it can reach after expansion of the stent, in which it is immobilized axially with respect to the stent.
Claim 44
Dependent Claim
49 words
The assembly of claim 41 , wherein at least one band is integrated in the peripheral wall of the valve, and wherein the at least one band has a shape memory, so that it keeps the valve pressed against the stent in the position of implantation of the valve.
Claim 45
Dependent Claim
20 words
The assembly of claim 40 , wherein the expandable outflow zone has a greater diameter than the valve supporting zone.
Claim 46
Dependent Claim
16 words
The assembly of claim 40 , further comprising means for limiting the expansion of the valve.
Claim 47
Dependent Claim
33 words
The assembly of claim 40 , wherein the valve comprises a peripheral wall with a tapered diameter in the axial direction and the valve supporting zone of the stent has a corresponding shape.
Claim 48
Dependent Claim
23 words
The assembly of claim 40 , further comprising a sheath that comprises an impermeable biocompatible material and at least partially covers the stent.
Claim 49
Dependent Claim
52 words
A prosthetic valve assembly according to claim 40 , wherein, in the valve supporting zone, the stent can be expanded to a greater diameter than the valve, and wherein a variation in the diameter to which the stent is expanded does not substantially impact the diameter to which the valve is expanded.
References Cited (Backward Citations)
US3334629A
Cited
US3409013A
Cited
US3587115A
Cited
US3540431A
Cited
US3671979A
Cited
US3628535A
Cited
US3642004A
Cited
US3657744A
Cited
US3714671A
Cited
US3755823A
Cited
US3868956A
Cited
US3839741A
Cited
US3795246A
Cited
US3874388A
Cited
US4291420A
Cited
US4035849A
Cited
US4106129A
Cited
US4056854A
Cited
US4297749A
Cited
US4233690A
Cited
US4222126A
Cited
US4265694A
Cited
US4574803A
Cited
GB2056023B
Cited
US4343048A
Cited
US4339831A
Cited
US4470157A
Cited
US4345340A
Cited
US4501030A
Cited
US4425908A
Cited
US4647283A
Cited
US4648881A
Cited
US4954126A
Cited
US4954126B1
Cited
US4655771A
Cited
US4655771B1
Cited
EP0103546B1
Cited
EP0103546A1
Cited
US4834755A
Cited
US4610688A
Cited
US4612011A
Cited
US4665906A
Cited
US4681908A
Cited
US4787899A
Cited
US5026366A
Cited
US4592340A
Cited
US4979939A
Cited
US4787901A
Cited
US4580568A
Cited
US5232445A
Cited
SU1271508A1
Cited
US4662885A
Cited
US4733665B1
Cited
US4733665A
Cited
US4733665C2
Cited
US4922905A
Cited
US4710192A
Cited
US4878906A
Cited
US4777951A
Cited
US5496346A
Cited
US4883458A
Cited
US4878495A
Cited
US4872874A
Cited
US4796629A
Cited
US4819751A
Cited
US4909252A
Cited
US5032128A
Cited
US4917102A
Cited
US5007896A
Cited
US4856516A
Cited
US4966604A
Cited
US4994077A
Cited
US5500014A
Cited
US5609626A
Cited
US5824061A
Cited
US5997573A
Cited
US5061273A
Cited
US5047041A
Cited
US4986830A
Cited
US5089015A
Cited
US5002559A
Cited
US5037434A
Cited
US5059177A
Cited
US5840081A
Cited
US6168614B1
Cited
US5085635A
Cited
US5411552A
Cited
US5217483A
Cited
US5161547A
Cited
US20030069492A1
Cited
US5152771A
Cited
US5443446A
Cited
US5295958A
Cited
US5272909A
Cited
US5327774A
Cited
US5167628A
Cited
US5350398A
Cited
US5397351A
Cited
US5713953A
Cited
US20060058775A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2013-08-23 | 2014-02-22 | 2014-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2017-08-23 | 2018-02-22 | 2018-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2021-08-23 | 2022-02-22 | 2022-08-24 | $7700.00 | Window Closed / Lapsed |