US6761736B1
Expired / Lapsed
US
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Medical article with a diamond-like carbon coated polymer
Assignee: St Jude Medical LLC
•
Filing: 1999-11-10
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Granted: 2004-07-13
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Expires: 2019-11-10
Abstract
Abstract Implantable vascular devices and implantable cardiovascular devices suitable for contacting a patient's blood or bodily fluids include a polymer substrate that is at least partly coated with a diamond-like carbon coating. The diamond-like carbon coated polymer substrate can be flexible or rigid. Preferred medical devices include heart valve prostheses with leaflets or orifice rings formed from diamond-like carbon coated polymer materials. Preferred approaches for the deposition of the diamond-like carbon coating are performed at low pressures and include ion beam assisted deposition.
Inventors
- 👤 Yi-Ren Woo
- 👤 Avrom M. Brendzel
- 👤 Chad Qingshen Cai
- 👤 Stephen A. Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:00
CPC Classifications
A; A61; A61L; A61L33/00; A61L33/02; A61L33/025; Y; Y10; Y10S; Y10S977/00; Y10S977/84; Y10S977/89
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
56 words
A medical article suitable for contact with a patient's blood, the medical article comprising a polymer substrate at least a portion of which is coated with a diamond-like carbon coating having a thickness from about 10 nm to about 2 microns, the medical article being a heart valve prosthesis capable of more than about 100° bending.
Claim 2
Dependent Claim
56 words
A medical article suitable for contact with a patient's blood, the medical article comprising a polymer substrate at least a portion of which is coated with a diamond-like carbon coating having a thickness from about 10 nm to about 2 microns, the medical article being a heart valve prosthesis capable of more than about 100° bending.
Claim 3
Dependent Claim
14 words
The medical article of claim 1 wherein the polymer substrate comprises a flexible polymer.
Claim 4
Dependent Claim
23 words
The medical article of claim 1 wherein the polymer substrate comprises polyurethane, polyacetal, ethylene-propylene copolymers, polytetrafluoroethylene, polysulfone, polyethersulfone, polyarylsulfone, polyetheretherketone, polydimethylsiloxane, or polyetherimide.
Claim 5
Dependent Claim
12 words
The medical article of claim 1 wherein the polymer substrate comprises polyurethane.
Claim 6
Dependent Claim
18 words
The medical article of claim 1 wherein the diamond-like carbon coating is covalently bonded to the polymer substrate.
Claim 7
Dependent Claim
19 words
The medical article of claim 1 wherein the diamond-like carbon coating comprises less than about 45 atomic percent hydrogen.
Claim 8
Dependent Claim
23 words
The medical article of claim 1 wherein the diamond-like carbon coating comprises from about 15 atomic percent to about 40 atomic percent hydrogen.
Claim 9
Dependent Claim
19 words
The medical article of claim 1 wherein the diamond-like carbon coating has a thickness greater than about 250 nm.
Claim 10
Dependent Claim
21 words
The medical article of claim 1 wherein the diamond-like carbon coating is uniform over the coated portion of the polymer substrate.
Claim 11
Dependent Claim
30 words
The medical article of claim 1 wherein the heart valve prosthesis comprises leaflets and the leaflets of the heart valve prosthesis comprise the polymer substrate with a diamond-like carbon coating.
Claim 12
Dependent Claim
18 words
The medical article of claim 1 wherein the polymer substrate has a thickness less than about 800 microns.
Claim 13
Dependent Claim
18 words
The medical article of claim 1 wherein the polymer substrate has a thickness less than about 600 microns.
Claim 14
Dependent Claim
51 words
A heart valve prosthesis comprising at least one component, the at least one component comprising a polymer substrate at least partially coated with diamond-like carbon and wherein the diamond-like carbon coating has a thickness of from about 10 nm to about 2 microns and is chemically bonded to the polymer substrate.
Claim 15
Dependent Claim
51 words
A heart valve prosthesis comprising at least one component, the at least one component comprising a polymer substrate at least partially coated with diamond-like carbon and wherein the diamond-like carbon coating has a thickness of from about 10 nm to about 2 microns and is chemically bonded to the polymer substrate.
Claim 16
Dependent Claim
16 words
The heart valve prosthesis of claim 13 wherein the at least one component comprises a leaflet.
Claim 17
Dependent Claim
17 words
The heart valve prosthesis of claim 13 wherein the at least one component comprises an orifice ring.
Claim 18
Dependent Claim
17 words
The heart valve prosthesis of claim 13 wherein the at least one component comprises a sewing cuff.
Claim 19
Dependent Claim
20 words
The heart valve prosthesis of claim 13 wherein said polymer substrate has a thickness of less than about 1500 microns.
Claim 20
Dependent Claim
23 words
The heart valve prosthesis of claim 13 wherein said diamond-like coating has a thickness of from about 250 nm to about 1 micron.
Claim 21
Dependent Claim
20 words
The heart valve prosthesis of claim 13 wherein said heart valve prosthesis being capable of more than about 100° bending.
Claim 22
Dependent Claim
21 words
The heart valve prosthesis of claim 13 wherein said diamond-like coating comprises from about 15 to about 40 atomic percent hydrogen.
Claim 23
Dependent Claim
42 words
A medical article suitable for contact with a patient's bodily fluids, the medical article comprising a polymer substrate at least a portion of which is coated with a diamond-like carbon coating, the polymer substrate having a thickness less than about 600 microns.
Claim 24
Dependent Claim
42 words
A medical article suitable for contact with a patient's bodily fluids, the medical article comprising a polymer substrate at least a portion of which is coated with a diamond-like carbon coating, the polymer substrate having a thickness less than about 600 microns.
Claim 25
Dependent Claim
12 words
The medical article of claim 21 wherein the polymer substrate is flexible.
Claim 26
Dependent Claim
12 words
The medical article of claim 21 wherein the polymer substrate comprises polyurethane.
Claim 27
Dependent Claim
22 words
The medical article of claim 21 wherein the diamond-like carbon coating has a thickness from about 10 nm to about 10 microns.
Claim 28
Dependent Claim
19 words
The medical article of claim 21 wherein the diamond-like carbon coating has a thickness greater than about 250 nm.
Claim 29
Dependent Claim
15 words
The medical article of claim 21 wherein the medical article comprises a heart valve prosthesis.
Claim 30
Dependent Claim
23 words
The medical article of claim 26 wherein the leaflets of the heart valve prosthesis comprise the polymer substrate with a diamond-like carbon coating.
Claim 31
Dependent Claim
20 words
The medical of claim 21 wherein the polymer substrate has a thickness from about 50 microns to about 300 microns.
Claim 32
Dependent Claim
18 words
The medical device of claim 21 wherein said diamond-like carbon coating is chemically bonded to the polymer substrate.
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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) | 2007-07-13 | 2008-01-12 | 2008-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-07-13 | 2012-01-12 | 2012-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-07-13 | 2016-01-12 | 2016-07-13 | $7700.00 | Window Closed / Lapsed |