Patent US20040127981A1 successfully refreshed from Google Patents.
US20040127981A1
Expired / Lapsed
US
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Devices, systems, and methods for retaining a native heart valve leaflet
Assignee: Venture Lending and Leasing IV Inc
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Filing: 2003-10-01
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Granted: —
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Expires: 2023-10-01
Abstract
Abstract Devices, systems and methods retain a native heart valve leaflet to prevent retrograde flow. The devices, systems, and methods employ an implant that, in use, rests adjacent a valve annulus and includes a retaining structure that is sized and shaped to overlay at least a portion of one or more native valve leaflets. The retaining structure retains the leaflet or leaflets it overlays, to resist leaflet eversion and/or prolapse. In this way, the implant prevents or reduces regurgitation. The implant does not interfere significantly with the opening of and blood flow through the leaflets during periods of antegrade flow.
Inventors
- 👤 David Rahdert
- 👤 John Macoviak
- 👤 Timothy Machold
- 👤 Robert Chang
- 👤 Rick Soss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:38
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2442; A61F2/2454
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
102 words
1 . An implant that retains a native heart valve leaflet to resist retrograde flow comprising a scaffold sized and configured to rest adjacent all or a portion of a native heart valve annulus, at least a portion of the scaffold defining a pseudo-annulus and including a retaining structure near or within the pseudo-annulus that is sized and shaped to overlay at least a portion of one or more native valve leaflets, the scaffold further including spaced-apart struts sized and configured to contact tissue near or within the heart valve annulus to brace the retaining structure to resist leaflet eversion and/or prolapse.
Claim 2
Dependent Claim
102 words
1 . An implant that retains a native heart valve leaflet to resist retrograde flow comprising a scaffold sized and configured to rest adjacent all or a portion of a native heart valve annulus, at least a portion of the scaffold defining a pseudo-annulus and including a retaining structure near or within the pseudo-annulus that is sized and shaped to overlay at least a portion of one or more native valve leaflets, the scaffold further including spaced-apart struts sized and configured to contact tissue near or within the heart valve annulus to brace the retaining structure to resist leaflet eversion and/or prolapse.
Claim 3
Dependent Claim
16 words
2 . An implant according to claim 1 wherein the retaining structure comprises a wire-form structure.
Claim 4
Dependent Claim
19 words
3 . An implant according to claim 1 wherein at least one of the struts comprises a wire-form structure.
Claim 5
Dependent Claim
20 words
4 . An implant according to claim 1 wherein the retaining structure and the struts each comprises a wire-form structure.
Claim 6
Dependent Claim
18 words
5 . An implant according to claim 1 wherein the scaffold is collapsible for placement within a catheter.
Claim 7
Dependent Claim
36 words
6 . An implant according to claim 1 wherein at least one of the struts carries a structure sized and configured to increase a surface area of contact with tissue at, above, or below the annulus.
Claim 8
Dependent Claim
38 words
7 . An implant according to claim 1 further including at least one structure appended to the scaffold and being sized and configured to contact tissue at, above, or below the heart valve annulus to stabilize the scaffold.
Claim 9
Dependent Claim
35 words
8 . An implant according to claim 1 wherein the scaffold includes a material and a shape to provide a spring-like bias to enable compliant contact with tissue near or within the heart valve annulus.
Claim 10
Dependent Claim
16 words
9 . An implant according to claim 1 wherein the struts reshape the heart valve annulus.
Claim 11
Dependent Claim
21 words
10 . An implant according to claim 1 wherein the struts apply tension to tissue to reshape the heart valve annulus.
Claim 12
Dependent Claim
19 words
11 . An implant according to claim 1 wherein the struts displace tissue to reshape the heart valve annulus.
Claim 13
Dependent Claim
26 words
12 . An implant according to claim 1 further including a second heart valve treatment element appended to the scaffold to affect a heart valve function.
Claim 14
Dependent Claim
26 words
13 . An implant according to claim 12 wherein the second heart valve treatment element includes means for reshaping the heart valve annulus for leaflet coaptation.
Claim 15
Dependent Claim
31 words
14 . An implant according to claim 12 wherein the second heart valve treatment element includes means for separating tissue along an axis of the heart valve annulus for leafleted coaptation.
Claim 16
Dependent Claim
104 words
15 . A method for retaining a native heart leaflet to resist retrograde flow comprising the steps of introducing an implant as defined in claim 1 into a heart, and resisting leaflet eversion and/or prolapse by locating the scaffold as defined in claim 1 adjacent all or a portion of a native heart valve annulus to define a pseudo-annulus with the retaining structure as defined in claim 1 overlaying at least a portion of one or more native valve leaflets and with the spaced-apart struts as defined in claim 1 contacting tissue near or within the heart valve annulus to brace the retaining structure.
Claim 17
Dependent Claim
19 words
16 . A method according to claim 15 wherein the introducing step comprises using an open heart surgical procedure.
Claim 18
Dependent Claim
26 words
17 . A method according to claim 15 wherein the introducing step comprises using a surgical procedure in which the implant is carried within a catheter.
Claim 19
Dependent Claim
18 words
18 . A method according to claim 15 wherein the introducing step comprises using an intravascular surgical procedure.
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