US20080071368A1
Active / In Force
US
⏱️ 0.4 years remaining
Sinus-engaging valve fixation member
Assignee: Medtronic Ventor Technologies Ltd
•
Filing: 2007-03-23
•
Granted: —
•
Expires: 2027-03-23
Abstract
Abstract A prosthesis is provided for implantation at a native semilunar valve of a native valve complex, the native valve complex having three semilunar sinuses and three native commissures. The prosthesis includes a valve prosthesis support, which comprises a support structure comprising exactly three engagement arms that meet one another at three respective junctures. The engagement arms are shaped so as define three peak complexes at the three respective junctures, and three trough complexes, each of which is between two of the peak complexes. Upon implantation of the prosthesis, each of the engagement arms is at least partially disposed within a respective one of the semilunar sinuses, such that each of the peak complexes is disposed distal to and in rotational alignment with a respective one of the native commissures, and each of the trough complexes is disposed at least partially within the respective one of the semilunar sinuses.
Inventors
- 👤 Yosi Tuval
- 👤 Ido Kilemnik
- 👤 Raphael Benary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:19
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2469; A61F2/2409; A61F2/2412; A61F2/2418; A61F2/2427; A61F2/2436; A61F2/95; A61F2/9522; A61F2220/00; A61F2220/0008; A61F2220/0016; A61F2220/0025; A61F2220/005; A61F2220/0058; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0028; A61F2230/005; A61F2230/0054; A61F2230/0063; A61F2230/0071; A61F2230/0073; A61F2230/008; A61F2250/00; A61F2250/0014; A61F2250/0039
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
156 words
1 . Apparatus comprising a prosthesis for implantation at a native semilunar valve of a native valve complex of a subject, the native valve complex having three semilunar sinuses and three native commissures, the prosthesis comprising a valve prosthesis support, which comprises a support structure comprising exactly three engagement arms that meet one another at three respective junctures, wherein the engagement arms are shaped so as define three peak complexes at the three respective junctures, and three trough complexes, each of which is between two of the peak complexes, and wherein, upon implantation of the prosthesis, each of the engagement arms is at least partially disposed within a respective one of the semilunar sinuses, such that each of the peak complexes is disposed distal to and in rotational alignment with a respective one of the native commissures, and each of the trough complexes is disposed at least partially within the respective one of the semilunar sinuses.
Claim 2
Dependent Claim
156 words
1 . Apparatus comprising a prosthesis for implantation at a native semilunar valve of a native valve complex of a subject, the native valve complex having three semilunar sinuses and three native commissures, the prosthesis comprising a valve prosthesis support, which comprises a support structure comprising exactly three engagement arms that meet one another at three respective junctures, wherein the engagement arms are shaped so as define three peak complexes at the three respective junctures, and three trough complexes, each of which is between two of the peak complexes, and wherein, upon implantation of the prosthesis, each of the engagement arms is at least partially disposed within a respective one of the semilunar sinuses, such that each of the peak complexes is disposed distal to and in rotational alignment with a respective one of the native commissures, and each of the trough complexes is disposed at least partially within the respective one of the semilunar sinuses.
Claim 3
Dependent Claim
55 words
2 . The apparatus according to claim 1 , wherein the native semilunar valve includes a native aortic valve of the subject, wherein the semilunar sinuses include respective aortic sinuses, and wherein, upon implantation of the prosthesis, each of the engagement arms is disposed at least partially within the respective one of the aortic sinuses.
Claim 4
Dependent Claim
55 words
3 . The apparatus according to claim 1 , wherein the native semilunar valve includes a native pulmonary valve of the subject, wherein the semilunar sinuses include respective pulmonary sinuses, and wherein, upon implantation of the prosthesis, each of the engagement arms is disposed at least partially within the respective one of the pulmonary sinuses.
Claim 5
Dependent Claim
33 words
4 . The apparatus according to claim 1 , wherein the engagement arms are shaped such that each of the peak complexes includes exactly one peak at its respective one of the junctures.
Claim 6
Dependent Claim
26 words
5 . The apparatus according to claim 1 , wherein the engagement arms are shaped such that each of the trough complexes includes exactly one trough.
Claim 7
Dependent Claim
29 words
6 . The apparatus according to claim 1 , wherein the engagement arms are shaped so as to define exactly one trough between each two of the peak complexes.
Claim 8
Dependent Claim
3 words
7 . (canceled)
Claim 9
Dependent Claim
3 words
7 . (canceled)
Claim 10
Dependent Claim
39 words
8 . The apparatus according to claim 1 , wherein the engagement arms are configured to touch respective transitions between the respective semilunar sinuses and respective native leaflet roots of the native valve complex, upon implantation of the prosthesis.
Claim 11
Dependent Claim
30 words
9 . The apparatus according to claim 1 , wherein the prosthesis is configured such that, during implantation of the prosthesis, the peak complexes self-align with the respective native commissures.
Claim 12
Dependent Claim
5 words
10 - 11 . (canceled)
Claim 13
Dependent Claim
5 words
10 - 11 . (canceled)
Claim 14
Dependent Claim
31 words
12 . The apparatus according to claim 1 , wherein the valve prosthesis support, upon implantation of the prosthesis, does not press upon the native commissures of the native semilunar valve.
Claim 15
Dependent Claim
3 words
13 . (canceled)
Claim 16
Dependent Claim
3 words
13 . (canceled)
Claim 17
Dependent Claim
30 words
14 . The apparatus according to claim 1 , wherein the prosthesis is configured to apply a radial force of less than 0.5 pounds outwardly against the native semilunar valve.
Claim 18
Dependent Claim
53 words
15 . The apparatus according to claim 1 , wherein the prosthesis is configured such that any radial force applied by the prosthesis outwardly against the native semilunar valve is insufficient by itself to chronically maintain the prosthesis in position with respect to the native valve complex under conditions of normal cardiac motion.
Claim 19
Dependent Claim
27 words
16 . The apparatus according to claim 1 , wherein the prosthesis is configured, upon implantation thereof, to embrace, without squeezing, leaflets of the native semilunar valve.
Claim 20
Dependent Claim
3 words
17 . (canceled)
Claim 21
Dependent Claim
3 words
17 . (canceled)
Claim 22
Dependent Claim
37 words
18 . The apparatus according to claim 1 , wherein the valve prosthesis support is configured such that, upon implantation of the prosthesis, the valve prosthesis support does not fold over leaflets of the native semilunar valve.
Claim 23
Dependent Claim
3 words
19 . (canceled)
Claim 24
Dependent Claim
3 words
19 . (canceled)
Claim 25
Dependent Claim
35 words
20 . The apparatus according to claim 1 , wherein the prosthesis is configured to less than fully open leaflets of the native valve complex when the prosthesis is implanted at the native valve complex.
Claim 26
Dependent Claim
3 words
21 . (canceled)
Claim 27
Dependent Claim
3 words
21 . (canceled)
Claim 28
Dependent Claim
37 words
22 . The apparatus according to claim 1 , wherein the prosthesis is configured such that, upon implantation at the native valve complex, the engagement arms are aligned by rotation with respective ones of the semilunar sinuses.
Claim 29
Dependent Claim
3 words
23 . (canceled)
Claim 30
Dependent Claim
3 words
23 . (canceled)
Claim 31
Dependent Claim
31 words
24 . The apparatus according to claim 1 , wherein each of the engagement arms is configured to engage a respective one of the semilunar sinuses upon implantation of the prosthesis.
Claim 32
Dependent Claim
5 words
25 - 27 . (canceled)
Claim 33
Dependent Claim
5 words
25 - 27 . (canceled)
Claim 34
Dependent Claim
77 words
28 . The apparatus according to claim 24 , wherein each of the engagement arms is shaped to define a length, parallel to a longitudinal axis of the prosthesis, between (a) at least one of the junctures and (b) a contact point of one of the engagement arms that meets at the juncture with a sinus floor of the respective one of the semilunar sinuses upon implantation of the prosthesis, which length is greater than 6 mm.
Claim 35
Dependent Claim
65 words
29 . The apparatus according to claim 1 , wherein the prosthesis comprises a prosthetic valve comprising one or more prosthetic leaflets, wherein at least a portion of each of the prosthetic leaflets is configured to assume a closed position during diastole and an open position during systole, and wherein the at least a portion is not directly coupled to any of the engagement arms.
Claim 36
Dependent Claim
48 words
30 . The apparatus according to claim 29 , wherein the prosthetic valve is coupled to the support structure such that at least 50% of an axial length of the prosthetic leaflets is distal to native valve leaflets of the native semilunar valve, upon implantation of the prosthesis.
Claim 37
Dependent Claim
5 words
31 - 38 . (canceled)
Claim 38
Dependent Claim
5 words
31 - 38 . (canceled)
Claim 39
Dependent Claim
64 words
39 . The apparatus according to claim 1 , wherein a shape of at least one of the engagement arms is generally characterized by a function z″(r)>=0, where z is a height of any given point on the at least one engagement arm measured along a longitudinal axis of the prosthesis, and r is a distance from the longitudinal axis to the given point.
Claim 40
Dependent Claim
3 words
40 . (canceled)
Claim 41
Dependent Claim
3 words
40 . (canceled)
Claim 42
Dependent Claim
68 words
41 . The apparatus according to claim 1 , wherein the support structure is configured to serve as a distal fixation member, wherein the valve prosthesis support comprises a proximal fixation member, and wherein the proximal fixation member and the engagement arms of the distal fixation member are configured to axially sandwich the native valve complex from ventricular and downstream sides thereof, respectively, upon implantation of the prosthesis.
Claim 43
Dependent Claim
5 words
42 - 68 . (canceled)
Claim 44
Dependent Claim
5 words
42 - 68 . (canceled)
Claim 45
Dependent Claim
160 words
69 . A method for implanting a prosthesis at a native semilunar valve of a native valve complex of a subject, the native valve complex having three semilunar sinuses and three native commissures, the method comprising: providing the prosthesis including a valve prosthesis support, which valve prosthesis support includes a support structure comprising exactly three engagement arms that meet one another at three respective junctures, wherein the engagement arms are shaped so as define three peak complexes at the three respective junctures, and three trough complexes, each of which is between two of the peak complexes; and implanting the prosthesis such that each of the engagement arms is at least partially disposed within a respective one of the semilunar sinuses, each of the peak complexes is disposed distal to and in rotational alignment with a respective one of the native commissures, and each of the trough complexes is disposed at least partially within the respective one of the semilunar sinuses.
Claim 46
Dependent Claim
160 words
69 . A method for implanting a prosthesis at a native semilunar valve of a native valve complex of a subject, the native valve complex having three semilunar sinuses and three native commissures, the method comprising: providing the prosthesis including a valve prosthesis support, which valve prosthesis support includes a support structure comprising exactly three engagement arms that meet one another at three respective junctures, wherein the engagement arms are shaped so as define three peak complexes at the three respective junctures, and three trough complexes, each of which is between two of the peak complexes; and implanting the prosthesis such that each of the engagement arms is at least partially disposed within a respective one of the semilunar sinuses, each of the peak complexes is disposed distal to and in rotational alignment with a respective one of the native commissures, and each of the trough complexes is disposed at least partially within the respective one of the semilunar sinuses.
Claim 47
Dependent Claim
5 words
70 - 90 . (canceled)
Claim 48
Dependent Claim
5 words
70 - 90 . (canceled)
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