US5084315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricious coatings, medical articles containing same and method for their preparation
Assignee: Becton Dickinson and Co
•
Filing: 1990-02-01
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Granted: 1992-01-28
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Expires: 2010-02-01
Abstract
Abstract An article which becomes lubricious when wet includes a base polymer and a coating composition thereon. The composition includes a lubricating polymer and a matrix polymer which adheres to the base polymer and serves as a carrier for the lubricating polymer. The composition may also include a homogenizing polymer to enhance the compatibility of the matrix and lubricating polymer. The invention includes a method to make the article of the invention by coextruding the base polymer and the coating composition.
Inventors
- 👤 Houshang Karimi
- 👤 Stanley C. Wells
- 👤 David E. Spielvogel
- 👤 Mutlu Karakelle
- 👤 Robert A. Taller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:47
CPC Classifications
A; A61; A61L; A61L29/00; A61L29/14; A61L29/08; A61L29/085; A61L33/00; A61L33/06; A61L33/068; A61L2400/00; A61L2400/10; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/139; Y10T428/1393; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/3158; Y10T428/31855
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
48 words
A medical article which is lubricious when wet comprising a shaped polyvinyl chloride substrate and a coating thereon, said coating comprising a noncovalently bonded hydrophilic polymer and an alloy of polyvinyl chloride and polyurethane, said alloy serving as a carrier for said polymer and adhering to said substrate.
Claim 2
Dependent Claim
48 words
A medical article which is lubricious when wet comprising a shaped polyvinyl chloride substrate and a coating thereon, said coating comprising a noncovalently bonded hydrophilic polymer and an alloy of polyvinyl chloride and polyurethane, said alloy serving as a carrier for said polymer and adhering to said substrate.
Claim 3
Dependent Claim
24 words
The article of claim 1 wherein said coating further comprises a homogenizing polyurethane to enhance the compatibility of said hydrophilic polymer and said alloy.
Claim 4
Dependent Claim
19 words
The article of claim 2 wherein said homogenizing polyurethane has a soft segment comprising polyethyleneoxide, polytetramethyleneoxide and mixtures thereof.
Claim 5
Dependent Claim
25 words
The article of claim 1 wherein said hydrophilic polymer is selected from the group consisting of polyethyleneoxide and a polyetherurethane having a polyethyleneoxide soft segment.
Claim 6
Dependent Claim
17 words
The article of claim 4 wherein said polyethyleneoxide has a molecular weight of about 100,000 to 8,000,000.
Claim 7
Dependent Claim
23 words
The article of claim 1 wherein said polyurethane is selected from the group consisting of a polyesterurethane, a polyetherurethane and a mixture thereof.
Claim 8
Dependent Claim
30 words
The article of claim 6 wherein said polyetherurethane has a soft segment comprising a polyglycol selected from the group consisting of polyethyleneoxide glycol, polypropyleneoxide glycol, polytetramethyleneoxide glycol and mixtures thereof.
Claim 9
Dependent Claim
22 words
The article of claim 6 wherein said polyesterurethane has a soft segment selected from the group consisting of polycaprolactone and polyethylene adipate.
Claim 10
Dependent Claim
10 words
The article of claim 1 which is a medical tubing.
Claim 11
Dependent Claim
38 words
A medical article which is lubricious when wet comprising a shaped base polymer and a coating thereon, said coating comprising a noncovalently bonded hydrophilic polymer and a polymeric carrier therefor, said polymeric carrier adhering to said base polymer.
Claim 12
Dependent Claim
38 words
A medical article which is lubricious when wet comprising a shaped base polymer and a coating thereon, said coating comprising a noncovalently bonded hydrophilic polymer and a polymeric carrier therefor, said polymeric carrier adhering to said base polymer.
Claim 13
Dependent Claim
26 words
The article of claim 10 wherein said base polymer is selected from the group consisting of polyvinylchloride, polyurethane, polyurethaneurea polyurethane-silicone block copolymer, polyolefin and mixtures thereof.
Claim 14
Dependent Claim
15 words
The article of claim 10 further comprising a radiopaque agent distributed in said base polymer.
Claim 15
Dependent Claim
54 words
A medical article which is lubricious when wet comprising a shaped polyvinylchloride tubing having a coating thereon, said coating comprising polyethyleneoxide, a homogenizing polyurethane and an alloy of a second polyurethane and polyvinylchloride, said alloy adhering to said tubing and said homogenizing polyurethane enhancing the compatibility of said alloy and said noncovalently bonded polyethyleneoxide.
Claim 16
Dependent Claim
54 words
A medical article which is lubricious when wet comprising a shaped polyvinylchloride tubing having a coating thereon, said coating comprising polyethyleneoxide, a homogenizing polyurethane and an alloy of a second polyurethane and polyvinylchloride, said alloy adhering to said tubing and said homogenizing polyurethane enhancing the compatibility of said alloy and said noncovalently bonded polyethyleneoxide.
Claim 17
Dependent Claim
23 words
The article of claim 13 wherein said homogenizing polyurethane is the product from reaction of 4,4'-diphenylmethane diisocyanate, butanediol, polytetramethyleneoxide glycol and polyethyleneoxide glycol.
Claim 18
Dependent Claim
37 words
The article of claim 13 wherein said second polyurethane is the product from reaction of 4,4'-diphenylmethane diisocyanate, butanediol and a polyglycol selected from the group consisting of a polyester glycol, a polyether glycol and a mixture thereof.
Claim 19
Dependent Claim
30 words
The article of claim 13 wherein the ratio of the components of said coating are about 70:20:10 parts by weight of said alloy, said homogenizing polyurethane and said polyethyleneoxide respectively.
Claim 20
Independent Claim
65 words
A method for preparing a shaped medical article which is lubricious when wet comprising coextruding a melt of polyvinylchloride and a melt of a coating composition, said composition comprising a noncovalently bonded hydrophilic polymer and an alloy of polyvinylchloride and polyurethane to give a shaped polyvinylchloride article having thereon an adhered layer of said coating composition, said layer when wet absorbing water and becoming lubricious.
Claim 21
Independent Claim
65 words
A method for preparing a shaped medical article which is lubricious when wet comprising coextruding a melt of polyvinylchloride and a melt of a coating composition, said composition comprising a noncovalently bonded hydrophilic polymer and an alloy of polyvinylchloride and polyurethane to give a shaped polyvinylchloride article having thereon an adhered layer of said coating composition, said layer when wet absorbing water and becoming lubricious.
Claim 22
Dependent Claim
25 words
The method of claim 17 wherein said coating composition further comprises a homogenizing polyurethane to enhance the compatibility of said hydrophilic polymer and said alloy.
Claim 23
Dependent Claim
18 words
The method of claim 18 wherein said polyurethane has a soft segment comprising polyethyleneoxide, polytetramethyleneoxide and mixtures thereof.
Claim 24
Dependent Claim
25 words
The method of claim 17 wherein said hydrophilic polymer is selected from the group consisting of polyethyleneoxide and a polyetherurethane having a polyethyleneoxide soft segment.
Claim 25
Dependent Claim
23 words
The method of claim 17 wherein said polyurethane is selected from the group consisting of a polyesterurethane, a polyetherurethane and a mixture thereof.
Claim 26
Independent Claim
66 words
A method for preparing a shaped medical article which is lubricious when wet comprising coextruding a melt of a base polymer and a melt of a coating composition, said composition comprising a hydrophilic polymer and a polymeric carrier therefor to give a shaped article of said base polymer having thereon an adhered layer of said coating composition, said layer when wet absorbing water and becoming lubricious.
Claim 27
Independent Claim
66 words
A method for preparing a shaped medical article which is lubricious when wet comprising coextruding a melt of a base polymer and a melt of a coating composition, said composition comprising a hydrophilic polymer and a polymeric carrier therefor to give a shaped article of said base polymer having thereon an adhered layer of said coating composition, said layer when wet absorbing water and becoming lubricious.
Claim 28
Dependent Claim
26 words
The method of claim 22 wherein said base polymer is selected from the group consisting of polyvinylchloride, polyurethane, polyurethaneurea, polyurethane-silicone block copolymer, polyolefin and mixtures thereof.
Claim 29
Independent Claim
66 words
A method for preparing a medical tubing which is lubricious when wet comprising coextruding a melt of polyvinylchloride and a melt of a coating composition, said composition comprising noncovalently bonded polyethyleneoxide, a homogenizing polyurethane and an alloy of polyvinylchloride and a second polyurethane to give a polyvinylchloride tubing having thereon an adhered layer of said coating composition, said layer when wet absorbing water and becoming lubricious.
Claim 30
Independent Claim
66 words
A method for preparing a medical tubing which is lubricious when wet comprising coextruding a melt of polyvinylchloride and a melt of a coating composition, said composition comprising noncovalently bonded polyethyleneoxide, a homogenizing polyurethane and an alloy of polyvinylchloride and a second polyurethane to give a polyvinylchloride tubing having thereon an adhered layer of said coating composition, said layer when wet absorbing water and becoming lubricious.
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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) | 1995-01-27 | 1995-07-29 | 1996-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-27 | 1999-07-29 | 2000-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-27 | 2003-07-29 | 2004-01-28 | $7700.00 | Window Closed / Lapsed |