US6719788B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Replacement atrioventricular heart valve
Assignee: Medtronic 3F Therapeutics Inc
•
Filing: 2002-05-21
•
Granted: 2004-04-13
•
Expires: 2022-05-21
Abstract
Abstract A replacement heart valve is configured to replace a native atrioventricular heart valve (mitral or tricuspid valve, positioned between an atrial chamber and a ventricular chamber). The replacement valve includes a a thin and flexible wall portion having no more than two leaflets. Two securement locations adjacent the outlet end of the valve are adapted to be attached to respective papillary muscles. The unconstrained regions between the securement locations flex inwardly into and out of engagement with each other in response to blood pressure in order to close and open the valve. The leaflets engage each other along a line of commissure.
Inventors
- 👤 James L. Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:39
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/36; A61L27/38; A61L27/3839; A61L27/3843; A61F; A61F2/00; A61F2/0095; A61F2/02; A61F2/24; A61F2/2412; A61L27/3604; A61L27/3629; A61L27/3641; A61L27/3645; A61L27/50; A61L27/507; G; G06; G06Q; G06Q40/00; G06Q40/04; A61L2430/00; A61L2430/20; Y; Y10; Y10S; Y10S623/00; Y10S623/90; Y10S623/901
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
186 words
A replacement atrioventricular heart valve, comprising: a thin and flexible wall portion comprising no more than two leaflets; an inlet end and an outlet end, the inlet end sized and adapted to be circumferentially secured substantially at a valve annulus formed by removing a native atrioventricular heart valve, the outlet end having a diameter no greater than that of the inlet end when the valve is open; two securement locations adjacent the outlet end and spaced from each other, each of the securement locations adapted to be attached to a respective papillary muscle; and two unconstrained regions between the securement locations, each of the unconstrained regions adapted to flex inwardly into and out of engagement with the other of the unconstrained regions in response to force by blood pressure, said unconstrained regions engaging along a line of commissure when the valve is closed, said line of commissure being generally parallel to a line extending between said papillary muscles, wherein the replacement atrioventricular valve is derived from one or more of the following materials: synthetic material, pericardial sac, fascia lata, intestinal tissue segment, or animal tissue culture.
Claim 2
Dependent Claim
186 words
A replacement atrioventricular heart valve, comprising: a thin and flexible wall portion comprising no more than two leaflets; an inlet end and an outlet end, the inlet end sized and adapted to be circumferentially secured substantially at a valve annulus formed by removing a native atrioventricular heart valve, the outlet end having a diameter no greater than that of the inlet end when the valve is open; two securement locations adjacent the outlet end and spaced from each other, each of the securement locations adapted to be attached to a respective papillary muscle; and two unconstrained regions between the securement locations, each of the unconstrained regions adapted to flex inwardly into and out of engagement with the other of the unconstrained regions in response to force by blood pressure, said unconstrained regions engaging along a line of commissure when the valve is closed, said line of commissure being generally parallel to a line extending between said papillary muscles, wherein the replacement atrioventricular valve is derived from one or more of the following materials: synthetic material, pericardial sac, fascia lata, intestinal tissue segment, or animal tissue culture.
Claim 3
Dependent Claim
15 words
A heart valve as in claim 1 , wherein said line of commissure is curved.
Claim 4
Dependent Claim
22 words
A heart valve as in claim 2 , wherein said line of commissure is curved in a manner that resembles a smile.
Claim 5
Dependent Claim
34 words
A heart as in claim 1 , wherein the securement locations are positioned so as to engage the papillary muscles at substantially the same locations vacated by chordae tendinea of the removed native valve.
Claim 6
Dependent Claim
15 words
A heart valve as in claim 1 , wherein the outlet end is slightly scalloped.
Claim 7
Dependent Claim
16 words
A heart valve as in claim 1 , wherein the securement locations are about 180° apart.
Claim 8
Dependent Claim
19 words
A heart valve as in claim 1 , additionally comprising longitudinal suture lines substantially aligned with the securement locations.
Claim 9
Dependent Claim
34 words
A heart valve as in claim 1 , wherein the wall portion is fashioned into a tubular shape by stitching a plurality of flat wall portion segments to each other along longitudinal suture lines.
Claim 10
Dependent Claim
15 words
A heart valve as in claim 8 , additionally comprising reinforcement adjacent the securement locations.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-04-13 | 2007-10-13 | 2008-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-04-13 | 2011-10-13 | 2012-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-04-13 | 2015-10-13 | 2016-04-13 | $7700.00 | Window Closed / Lapsed |