US6562069B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer leaflet designs for medical devices
Assignee: St Jude Medical LLC
•
Filing: 2001-09-19
•
Granted: 2003-05-13
•
Expires: 2021-09-19
Abstract
Abstract Valved prostheses include a support structure and a plurality of flexible polymer leaflets connected to the support structure, in which the leaflets have an improved structural design. The support structure has a plurality of commissure supports and scallops between the commissure supports. Generally, the flexible polymer leaflets project away from the support structure at an attachment edge where the leaflets connect to the support structure. In particular embodiments, the leaflets at the attachment edge are at an angle from about 5 degrees to about 85 degrees relative to a plane normal to the valve axis. In some embodiments, the flexible polymer leaflets having a coaptation depth from about 0.3 times the valve radius to about 0.8 times the valve radius. In further embodiments, the flexible polymer leaflets form a valve with a valve height from about one times the valve radius to about 2 times the valve radius and have leaflet lengths at least about 1 millimeter greater than the valve radius.
Inventors
- 👤 Chad Q. Cai
- 👤 Steven D. Kruse
- 👤 James L. Kurk
- 👤 Yi-Ren Woo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:10
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2250/00; A61F2250/0014; A61F2250/0029
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
99 words
A valved prosthesis comprising a support structure and a plurality of flexible polymer leaflets connected to the support structure, the support structure having a plurality of commissure supports and scallops between the commissure supports, the valve having a relaxed state with a lumen that is at least 10 percent of the fully open lumen and, at a point along the scallops closest to the inflow edge, the flexible polymer leaflets connecting to the support structure at an angle toward the inflow edge from about 5 degrees to about 85 degrees relative to a plane normal to the valve axis.
Claim 2
Dependent Claim
99 words
A valved prosthesis comprising a support structure and a plurality of flexible polymer leaflets connected to the support structure, the support structure having a plurality of commissure supports and scallops between the commissure supports, the valve having a relaxed state with a lumen that is at least 10 percent of the fully open lumen and, at a point along the scallops closest to the inflow edge, the flexible polymer leaflets connecting to the support structure at an angle toward the inflow edge from about 5 degrees to about 85 degrees relative to a plane normal to the valve axis.
Claim 3
Dependent Claim
14 words
The valved prosthesis of claim 1 wherein the support structure comprises a rigid stent.
Claim 4
Dependent Claim
14 words
The valved prosthesis of claim 1 wherein the support structure comprises a flexible material.
Claim 5
Dependent Claim
20 words
The valved prosthesis of claim 3 wherein the flexible material comprises a polymer composition found in the flexible polymer leaflet.
Claim 6
Dependent Claim
14 words
The valved prosthesis of claim 1 wherein the flexible polymer leaflets comprise a reinforcement.
Claim 7
Dependent Claim
16 words
The valved prosthesis of claim 1 wherein the flexible polymer leaflets have a reinforced free edge.
Claim 8
Dependent Claim
31 words
The valved prosthesis of claim 1 wherein the flexible polymer leaflets connect to the support structure at an angle toward the inflow edge from about 10 degrees to about 60 degrees.
Claim 9
Dependent Claim
31 words
The valved prosthesis of claim 1 wherein the flexible polymer leaflets connect to the support structure at an angle toward the inflow edge from about 10 degrees to about 50 degrees.
Claim 10
Dependent Claim
28 words
The valved prosthesis of claim 1 wherein the valve has a relaxed state with a lumen that is at least about 90 percent of the full open lumen.
Claim 11
Dependent Claim
31 words
The valved prosthesis of claim 1 wherein the valve has a relaxed state with a lumen that is between about 50 percent and about 80 percent of the full open lumen.
Claim 12
Dependent Claim
16 words
The valved prosthesis of claim 1 wherein the plurality of flexible polymer leaflets is three leaflets.
Claim 13
Dependent Claim
30 words
The valved prosthesis of claim 1 wherein the flexible polymer leaflets comprise a polymer selected from the group consisting of polyurethanes, silicones, polydimethyl siloxane, polytetrafluoroethylene, derivatives thereof and mixtures thereof.
Claim 14
Dependent Claim
57 words
A valved prosthesis comprising a support structure and at least three flexible polymer leaflets connected to the support structure, the support structure having a plurality of commissure supports and scallops between the commissure supports and the flexible polymer leaflets having a coaptation depth from about 0.3 times the valve radius to about 0.8 times the valve radius.
Claim 15
Dependent Claim
57 words
A valved prosthesis comprising a support structure and at least three flexible polymer leaflets connected to the support structure, the support structure having a plurality of commissure supports and scallops between the commissure supports and the flexible polymer leaflets having a coaptation depth from about 0.3 times the valve radius to about 0.8 times the valve radius.
Claim 16
Dependent Claim
13 words
The valved prosthesis of claim 13 wherein the leaflets have reinforced free edges.
Claim 17
Dependent Claim
27 words
The valved prosthesis of claim 13 wherein the leaflets have a coaptation depth from about 0.3 times the valve radius to about 0.6 times the valve radius.
Claim 18
Dependent Claim
28 words
The valved prosthesis of claim 13 wherein the valve has a relaxed state with a lumen that is at least about 90 percent of the full open lumen.
Claim 19
Dependent Claim
31 words
The valved prosthesis of claim 13 wherein the valve has a relaxed state with a lumen that is between about 50 percent and about 80 percent of the full open lumen.
Claim 20
Dependent Claim
29 words
The valved prosthesis of claim 13 wherein the valve has a relaxed state with a lumen that is no more than about 10 percent of the full open lumen.
Claim 21
Dependent Claim
14 words
The valved prosthesis of claim 13 wherein the support structure comprises a rigid stent.
Claim 22
Dependent Claim
14 words
The valved prosthesis of claim 13 wherein the support structure comprises a flexible material.
Claim 23
Dependent Claim
69 words
A valved prosthesis comprising a support structure and a plurality of flexible polymer leaflets, the support structure having a plurality of commissure supports and scallops between the commissure supports and the flexible polymer leaflets form a valve with a valve height from about one times the valve radius to about 2 times the valve radius and having leaflet lengths at least about 1 millimeter greater than the valve height.
Claim 24
Dependent Claim
69 words
A valved prosthesis comprising a support structure and a plurality of flexible polymer leaflets, the support structure having a plurality of commissure supports and scallops between the commissure supports and the flexible polymer leaflets form a valve with a valve height from about one times the valve radius to about 2 times the valve radius and having leaflet lengths at least about 1 millimeter greater than the valve height.
Claim 25
Dependent Claim
14 words
The valved prosthesis of claim 21 wherein the plurality of leaflets is three leaflets.
Claim 26
Dependent Claim
14 words
The valved prosthesis of claim 21 wherein the leaflets have a reinforced free edge.
Claim 27
Dependent Claim
32 words
The valved prosthesis of claim 21 wherein the leaflets have a leaflet length from about 1.5 millimeters greater than the valve height to about 1.2 times the valve height plus 2 millimeters.
Claim 28
Dependent Claim
25 words
The valved prosthesis of claim 21 wherein the valve height is from about 1.2 times the valve radius to about 1.8 times the valve radius.
Claim 29
Dependent Claim
28 words
The valved prosthesis of claim 21 wherein the valve has a relaxed state with a lumen that is at least about 90 percent of the full open lumen.
Claim 30
Dependent Claim
31 words
The valved prosthesis of claim 21 wherein the valve has a relaxed state with a lumen that is between about 50 percent and about 80 percent of the full open lumen.
Claim 31
Dependent Claim
29 words
The valved prosthesis of claim 21 wherein the valve has a relaxed state with a lumen that is no more than about 10 percent of the full open lumen.
Claim 32
Dependent Claim
40 words
The valved prosthesis of claim 21 wherein the flexible polymer leaflets connect to the support structure at an angle toward the inflow edge from about 5 degrees to about 85 degrees relative to a plane normal to the valve axis.
Claim 33
Dependent Claim
31 words
The valved prosthesis of claim 29 wherein the flexible polymer leaflets connect to the support structure at an angle toward the inflow edge from about 10 degrees to about 60 degrees.
Claim 34
Dependent Claim
31 words
The valved prosthesis of claim 29 wherein the flexible polymer leaflets connect to the support structure at an angle toward the inflow edge from about 10 degrees to about 50 degrees.
Claim 35
Dependent Claim
14 words
The valved prosthesis of claim 21 wherein the plurality of leaflets is three leaflets.
References Cited (Backward Citations)
US3717883A
Cited
US3861416A
Cited
US4291420A
Cited
US4218782A
Cited
US4222126A
Cited
US4265694A
Cited
US4417360A
Cited
US4364127A
Cited
US4451936A
Cited
US4544599A
Cited
US4624822A
Cited
US4556996A
Cited
US4834747A
Cited
US4731074A
Cited
US4888009A
Cited
US4778461A
Cited
US4904254A
Cited
US5147389A
Cited
US5024232A
Cited
US4781716A
Cited
US5094876A
Cited
EP0331345A2
Cited
US5094661A
Cited
US5116564A
Cited
US5376113A
Cited
US5500014A
Cited
US5415667A
Cited
US5163960A
Cited
US5078739A
Cited
US5139515A
Cited
US5449385A
Cited
US5358518A
Cited
US5605693A
Cited
EP0632711A1
Cited
US5776190A
Cited
US5476471A
Cited
US5480424A
Cited
US5766247A
Cited
US5683451A
Cited
US5766710A
Cited
US5554184A
Cited
US5562729A
Cited
EP0850607A1
Cited
WO1998032400A1
Cited
US6171335B1
Cited
US6395025B1
Cited
US6338740B1
Cited
US6139575A
Cited
US6283994B1
Cited
US6478819B2
Cited
US6174331B1
Cited
WO2001005334A1
Cited
WO2002024119A1
Cited
US6454798B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-05-12 | 2006-11-11 | 2007-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-05-12 | 2010-11-11 | 2011-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-05-12 | 2014-11-11 | 2015-05-13 | $7700.00 | Window Closed / Lapsed |