US5026607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical apparatus having protective, lubricious coating
Assignee: Medtronic Vascular Inc
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Filing: 1989-06-23
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Granted: 1991-06-25
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Expires: 2009-06-23
Abstract
Abstract A method for providing a medical apparatus with a protective, lubricious coating is described. The method comprises providing a coating solution which contains a protective compound such as a urethane, a slip additive such as a siloxane, and optionally, a crosslinking agent for the protective compound such as a polyfunctional aziridine, coating the solution onto a surface of a medical apparatus and allowing the coating to set. The resulting surface coating is lubricious, tough and flexible. The coating is well suited for use with materials used as components of balloon catheters.
Inventors
- 👤 Margaret P. Kiezulas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:25
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61L; A61L29/00; A61L29/08; A61L29/085; C; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/833; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C09; C09D; C09D175/00; C09D175/04; C08J2323/00; C08J2323/02; C08J2475/00; C08J2475/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31565; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
96 words
A method for providing a protective, lubricious coating on surfaces cf medical apparatus, the method comprising: a) providing a coating solution having a solids content of between about 2% and about 80% by weight, the coating solution comprising an aqueous dispersion of a urethane having a solids content of between about 30% and about 50%, and a silicone or siloxane emulsion having a solids content of at least about 15%; b) applying the coating solution to a surface of the medical apparatus; and, c) allowing the coating to set into a layer upon the apparatus surface.
Claim 2
Independent Claim
96 words
A method for providing a protective, lubricious coating on surfaces cf medical apparatus, the method comprising: a) providing a coating solution having a solids content of between about 2% and about 80% by weight, the coating solution comprising an aqueous dispersion of a urethane having a solids content of between about 30% and about 50%, and a silicone or siloxane emulsion having a solids content of at least about 15%; b) applying the coating solution to a surface of the medical apparatus; and, c) allowing the coating to set into a layer upon the apparatus surface.
Claim 3
Dependent Claim
18 words
A method as in claim 1 wherein the coating solution additionally contains a crosslinking agent for the urethane.
Claim 4
Dependent Claim
14 words
A method as in claim 2 wherein the crosslinking agent comprises a polyfunctional aziridine.
Claim 5
Dependent Claim
16 words
A method as in claim 1 wherein the coating is applied to a polyethylene terephthalate surface.
Claim 6
Dependent Claim
19 words
A method as in claim 4 wherein a primer is applied to the surface prior to applying the coating.
Claim 7
Dependent Claim
13 words
A method as in claim 5 wherein the primer comprises ethylene acrylic acid.
Claim 8
Dependent Claim
19 words
A method as in claim 1 wherein the urethane is dispersed in an aqueous solution containing triethylamine and N-methyl-2-pyrrolidone.
Claim 9
Dependent Claim
17 words
A method as in claim 1 wherein the siloxane is provided as an emulsion of dimethyl siloxane.
Claim 10
Dependent Claim
16 words
A method as in claim 8 wherein the emulsion contains a solids content of about 17%.
Claim 11
Dependent Claim
20 words
A method as in claim 1 wherein the coating solution contains between about 15% and about 25% solids by weight.
Claim 12
Dependent Claim
13 words
A method as in claim 1 wherein the medical apparatus comprises a balloon.
Claim 13
Dependent Claim
12 words
A method as in claim 1 wherein the apparatus comprises a catheter.
Claim 14
Dependent Claim
12 words
A method as in claim 1 wherein the apparatus comprises a guidewire.
Claim 15
Dependent Claim
28 words
A medical apparatus having a protective, lubricious surface coating, the coating comprising a crosslinked, water-based urethane compound having domains of a silicone or siloxane slip additive dispersed therethrough.
Claim 16
Dependent Claim
28 words
A medical apparatus having a protective, lubricious surface coating, the coating comprising a crosslinked, water-based urethane compound having domains of a silicone or siloxane slip additive dispersed therethrough.
Claim 17
Dependent Claim
13 words
An apparatus as in claim 14 wherein the slip additive comprises dimethyl siloxane.
Claim 18
Dependent Claim
18 words
An apparatus as in claim 14 wherein the surface upon which the coating is applied comprises polyethylene terephthalate.
Claim 19
Dependent Claim
10 words
An apparatus as in claim 16 which comprises a balloon.
Claim 20
Dependent Claim
10 words
An apparatus as in claim 14 which comprises a catheter.
Claim 21
Dependent Claim
10 words
An apparatus as in claim 14 which comprises a guidewire.
Claim 22
Dependent Claim
17 words
An apparatus as in claim 14 having a primer layer disposed between the coating and the surface.
Claim 23
Dependent Claim
19 words
An apparatus as in claim 20 wherein the primer layer has a functionality suitable for crosslinking with the coating.
Claim 24
Dependent Claim
14 words
An apparatus as in claim 21 wherein the primer layer has a carboxyl functionality.
Claim 25
Dependent Claim
14 words
An apparatus as in claim 22 wherein the primer layer comprises ethylene acrylic acid.
Claim 26
Dependent Claim
17 words
An apparatus as in claim 14 wherein the coating additionally comprises a crosslinking agent for the urethane.
Claim 27
Dependent Claim
14 words
An apparatus as in claim 24 wherein the crosslinking agent comprises a polyfunctional aziridine.
Claim 28
Dependent Claim
104 words
An article of manufacture comprising a medical device having a protective, lubricious coating on a surface thereof, the coating provided by the method comprising: a) providing a coating solution having a solids content of between about 2% and about 80% by weight, the coating solution comprising an aqueous dispersion of a urethane having a solids content of between about 30% and about 50%, and a silicone or siloxane emulsion having a solids content of at least about 15%; b) applying the coating solution to a surface of the medical device; and, c) allowing the coating to set into a layer upon the device surface.
Claim 29
Dependent Claim
104 words
An article of manufacture comprising a medical device having a protective, lubricious coating on a surface thereof, the coating provided by the method comprising: a) providing a coating solution having a solids content of between about 2% and about 80% by weight, the coating solution comprising an aqueous dispersion of a urethane having a solids content of between about 30% and about 50%, and a silicone or siloxane emulsion having a solids content of at least about 15%; b) applying the coating solution to a surface of the medical device; and, c) allowing the coating to set into a layer upon the device surface.
Claim 30
Dependent Claim
17 words
The article of claim 26 wherein the coating solution additionally contains a crosslinking agent for the urethane.
Claim 31
Dependent Claim
13 words
The article of claim 27 wherein the crosslinking agent comprises a polyfunctional aziridine.
Claim 32
Dependent Claim
15 words
The article of claim 26 wherein the coating is applied to a polyethylene terephthalate surface.
Claim 33
Dependent Claim
18 words
The article of claim 29 wherein a primer is applied to the surface prior to applying the coating.
Claim 34
Dependent Claim
12 words
The article of claim 30 wherein the primer comprises ethylene acrylic acid.
Claim 35
Dependent Claim
20 words
The article of claim 26 wherein the medical device is selected from the group consisting of balloons, catheters and guidewires.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-24 | 2002-12-24 | 2003-06-25 | $7700.00 | Window Closed / Lapsed |