US20090319037A1
Active / In Force
US
⏱️ 2.3 years remaining
Retaining mechanisms for prosthetic valves
Assignee: Edwards Lifesciences Corp
•
Filing: 2009-02-10
•
Granted: —
•
Expires: 2029-02-10
Abstract
Abstract Disclosed herein are representative embodiments of methods, apparatus, and systems used to deliver a prosthetic heart valve to a deficient valve. In one embodiment, for instance, a support stent is delivered to a position on the surface of the outflow side of a native heart valve of a patient, the support stent defining a support-stent interior. An expandable prosthetic heart valve is delivered into the native heart valve from the inflow side of the native heart valve and into the support-stent interior. The expandable prosthetic heart valve is expanded while the expandable prosthetic valve is in the support-stent interior and while the support stent is at the position on the surface of the outflow side of the heart valve, thereby causing one or more of the native leaflets of the native heart valve to be frictionally secured between the support stent and the expanded prosthetic heart valve.
Inventors
- 👤 Stanton Rowe
- 👤 Francesco Maisano
- 👤 Oded Meiri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 15:30
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2427; A61F2/2409; A61F2/2412; A61F2/2418; A61F2/243; A61F2/2433; A61F2/2436; A61F2/2442; A61F2/2445; A61B; A61B17/00; A61B17/04; A61B17/0467; A61B17/32; A61B17/320016; A61B2017/32004; A61F2220/00; A61F2220/0008; A61F2220/0016; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0054; A61F2250/00; A61F2250/0058; A61F2250/006; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61M; A61M25/00; A61M2025/0004; A61M25/10; A61M25/104
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
121 words
1 . A method, comprising: delivering a support structure to a position on or adjacent to the surface of the outflow side of a native heart valve of a patient, the support structure defining a support-structure interior; delivering an expandable prosthetic heart valve into the native heart valve and into the support-structure interior; and expanding the expandable prosthetic heart valve while the expandable prosthetic heart valve is in the support-structure interior and while the support structure is at the position on or adjacent to the surface of the outflow side of the native heart valve, thereby causing one or more native leaflets of the native heart valve to be frictionally secured between the support structure and the expanded prosthetic heart valve.
Claim 2
Dependent Claim
121 words
1 . A method, comprising: delivering a support structure to a position on or adjacent to the surface of the outflow side of a native heart valve of a patient, the support structure defining a support-structure interior; delivering an expandable prosthetic heart valve into the native heart valve and into the support-structure interior; and expanding the expandable prosthetic heart valve while the expandable prosthetic heart valve is in the support-structure interior and while the support structure is at the position on or adjacent to the surface of the outflow side of the native heart valve, thereby causing one or more native leaflets of the native heart valve to be frictionally secured between the support structure and the expanded prosthetic heart valve.
Claim 3
Dependent Claim
25 words
2 . The method of claim 1 , wherein the expandable prosthetic heart valve is delivered from the inflow side of the native heart valve.
Claim 4
Dependent Claim
25 words
3 . The method of claim 1 , wherein the expandable prosthetic heart valve is delivered from the outflow side of the native heart valve.
Claim 5
Dependent Claim
42 words
4 . The method of claim 1 , wherein the native heart valve is an aortic valve, and wherein the act of delivering the expandable prosthetic heart valve comprises delivering the prosthetic heart valve through the left ventricle of the patient's heart.
Claim 6
Dependent Claim
38 words
5 . The method of claim 1 , wherein the native heart valve is an aortic valve, and wherein the act of delivering the expandable prosthetic heart valve comprises delivering the prosthetic heart valve through the patient's aorta.
Claim 7
Dependent Claim
120 words
6 . The method of claim 1 , wherein the native heart valve is an aortic valve, wherein the support structure is a support stent, and wherein the act of delivering the support structure comprises: advancing a first catheter through the aortic arch of the patient so that a distal end of the first catheter is near the aortic valve of the patient, the first catheter at least partially enclosing a stent-delivery catheter, an inner catheter, and the support stent in a compressed state; and advancing the stent-delivery catheter and the inner catheter through the first catheter, thereby causing the support stent to be deployed from the distal end of the first catheter and to expand into a decompressed state.
Claim 8
Dependent Claim
208 words
7 . The method of claim 1 , wherein the native heart valve is a mitral valve, wherein the support structure is a support band, and wherein the act of delivering the support structure comprises: advancing a first loop delivery catheter into the left ventricle of the patient so that a first distal end of the first loop delivery catheter extends around a first portion of the chordae tendineae; advancing a second loop delivery catheter into the left ventricle of the patient so that a second distal end of the second loop delivery catheter extends around a second portion of the chordae tendineae, the second portion of the chordae tendineae being opposite the first portion of the chordae tendineae, and so that the second distal end of the second loop delivery is adjacent to the first distal end of the first loop delivery catheter; advancing a support band material through an interior of the first loop delivery catheter and an interior of the second loop delivery catheter; attaching a locking member to portions of the support band material; and advancing the locking member along the portions of the support band material and into the left ventricle of the patient, thereby forming the support band around the chordae tendineae.
Claim 9
Dependent Claim
68 words
8 . The method of claim 1 , wherein the act of delivering the support structure comprises guiding the support structure to the position on or adjacent to the surface of the outflow side of the native heart valve and into a desired orientation, wherein the desired orientation aligns peaks of the support structure with either the tips or the commissures of the one or more native leaflets.
Claim 10
Dependent Claim
45 words
9 . The method of claim 1 , further comprising disconnecting the support structure from at least a delivery catheter once the one or more native leaflets of the native heart valve are fictionally secured between the support structure and the expanded prosthetic heart valve.
Claim 11
Dependent Claim
40 words
10 . The method of claim 9 , wherein the disconnecting comprises retracting an inner catheter relative to a stent-delivery catheter, thereby retracting inner prongs coupled to the inner catheter from corresponding apertures in retaining arms of the support stent.
Claim 12
Dependent Claim
29 words
11 . The method of claim 9 , wherein the disconnecting comprises cutting through material used to form the support structure, thereby releasing the support structure from a catheter.
Claim 13
Dependent Claim
40 words
12 . The method of claim 1 , wherein the act of expanding the expandable prosthetic heart valve comprises inflating a balloon of a balloon catheter, the expandable prosthetic heart valve being disposed around the balloon of the balloon catheter.
Claim 14
Dependent Claim
126 words
13 . A method, comprising: advancing a guide catheter through the aortic arch of a patient so that a distal end of the guide catheter is near the aortic valve of the patient, the guide catheter at least partially enclosing a stent-delivery catheter and a compressed support stent releasably connected to the stent-delivery catheter; advancing the stent-delivery catheter through the guide catheter, thereby causing the support stent to be deployed from the distal end of the guide catheter and to become uncompressed; positioning the uncompressed support stent adjacent to or on a surface of the aortic side of the aortic valve such that the leaflets of the aortic valve are circumscribed by the uncompressed support stent; and disconnecting the uncompressed support stent from the stent-delivery catheter.
Claim 15
Dependent Claim
126 words
13 . A method, comprising: advancing a guide catheter through the aortic arch of a patient so that a distal end of the guide catheter is near the aortic valve of the patient, the guide catheter at least partially enclosing a stent-delivery catheter and a compressed support stent releasably connected to the stent-delivery catheter; advancing the stent-delivery catheter through the guide catheter, thereby causing the support stent to be deployed from the distal end of the guide catheter and to become uncompressed; positioning the uncompressed support stent adjacent to or on a surface of the aortic side of the aortic valve such that the leaflets of the aortic valve are circumscribed by the uncompressed support stent; and disconnecting the uncompressed support stent from the stent-delivery catheter.
Claim 16
Dependent Claim
26 words
14 . The method of claim 13 , wherein the act of disconnecting comprises retracting an inner catheter positioned in the interior of the stent-delivery catheter.
Claim 17
Dependent Claim
42 words
15 . The method of claim 13 , further comprising advancing a distal end of a THV-delivery catheter through a puncture in the left ventricle of the patient and into both the aortic valve and an interior of the uncompressed support stent.
Claim 18
Dependent Claim
51 words
16 . The method of claim 13 , further comprising: removing the stent-delivery catheter from the aortic arch of the patient; and advancing a distal end of a THV-delivery catheter through the aortic arch of the patient and into both the aortic valve and an interior of the uncompressed support stent.
Claim 19
Dependent Claim
99 words
17 . An apparatus, comprising: a support stent having an annular body that defines one or more peaks and one or more valleys along its circumference, the support stent being radially compressible into a compressed state and self expandable into an uncompressed state, the support stent being sized such that it can be positioned within the aorta of a patient at a location adjacent to the aortic valve and thereby circumscribe the aortic valve, the support stent further comprising at least one retaining arm at or near a respective one of the peaks, the retaining arm comprising an aperture.
Claim 20
Dependent Claim
99 words
17 . An apparatus, comprising: a support stent having an annular body that defines one or more peaks and one or more valleys along its circumference, the support stent being radially compressible into a compressed state and self expandable into an uncompressed state, the support stent being sized such that it can be positioned within the aorta of a patient at a location adjacent to the aortic valve and thereby circumscribe the aortic valve, the support stent further comprising at least one retaining arm at or near a respective one of the peaks, the retaining arm comprising an aperture.
Claim 21
Dependent Claim
19 words
18 . The apparatus of claim 17 , wherein the support stent is formed from a single annular member.
Claim 22
Dependent Claim
19 words
19 . The apparatus of claim 17 , wherein the support stent consists of three peaks and three valleys.
Claim 23
Dependent Claim
37 words
20 . The apparatus of claim 19 , wherein the shape formed by the three peaks and the three valleys approximates the shape of the leaflets of the aortic valve when the aortic valve is fully opened.
Claim 24
Dependent Claim
18 words
21 . The apparatus of claim 17 , wherein the support stent is made of a shape-memory alloy.
Claim 25
Dependent Claim
50 words
22 . The apparatus of claim 17 , wherein a projection of the annular body onto a first plane is ring shaped or starfish shaped, and wherein the annular body defines the one or more peaks and the one or more valleys in a direction perpendicular to the first plane.
Claim 26
Dependent Claim
20 words
23 . The apparatus of claim 17 , wherein the annular body is sinusoidal or saw-tooth shaped along its circumference.
Claim 27
Dependent Claim
109 words
24 . An apparatus, comprising: a support stent having an annular main body portion and an annular, generally U-shaped rim portion at one end of the main body portion, the support stent being radially compressible into a compressed state and self expandable into an uncompressed state, and the rim portion having a diameter that is greater than a diameter of the annular main body portion and that is sized so that an outer perimeter of the rim portion will engage the walls surrounding the aortic valve of a patient when the support stent is positioned within the aorta of the patient at a location adjacent to the aortic valve.
Claim 28
Dependent Claim
109 words
24 . An apparatus, comprising: a support stent having an annular main body portion and an annular, generally U-shaped rim portion at one end of the main body portion, the support stent being radially compressible into a compressed state and self expandable into an uncompressed state, and the rim portion having a diameter that is greater than a diameter of the annular main body portion and that is sized so that an outer perimeter of the rim portion will engage the walls surrounding the aortic valve of a patient when the support stent is positioned within the aorta of the patient at a location adjacent to the aortic valve.
Claim 29
Dependent Claim
18 words
25 . The apparatus of claim 24 , wherein the support stent is made of a shape-memory alloy.
Claim 30
Dependent Claim
22 words
26 . The apparatus of claim 24 , wherein the annular main body portion is sinusoidal or saw-tooth shaped along its circumference.
Claim 31
Dependent Claim
23 words
27 . The apparatus of claim 24 , wherein the rim portion is located around a bottom region of the main body portion.
Claim 32
Dependent Claim
21 words
28 . The apparatus of claim 24 , wherein the support stent is made of multiple elements forming a criss-cross pattern.
Claim 33
Dependent Claim
26 words
29 . The apparatus of claim 24 , further comprising at least one retaining arm at or near a top region of the main body portion.
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