US4722344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiopaque polyurethanes and catheters formed therefrom
Assignee: Ethicon Endo Surgery Inc
•
Filing: 1986-05-23
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Granted: 1988-02-02
•
Expires: 2006-05-23
Abstract
Abstract Catheters formed from polyurethanes containing sufficient halogenated moieties in the polymer structure to make the polyurethanes radiopaque are disclosed. Such polyurethanes can be prepared by employing halogenated diols and/or halogenated diisocyanate reactants. In preferred cases, the catheters are optically transparent in addition to being radiopaque.
Inventors
- 👤 Ronald E. Cambron
- 👤 Donald J. Dempsey
- 👤 Kevin M. Mills
- 👤 Hartley A. Silverwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:04
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/773; A; A61; A61L; A61L29/00; A61L29/04; A61L29/06; A61L29/14; A61L29/18; C08G18/28; C08G18/30; C08G18/38; C08G18/3802
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
19 words
A catheter formed from a polyurethane containing sufficient halogenated moieties in the polymer structure to make the catheter radiopaque.
Claim 2
Dependent Claim
19 words
A catheter formed from a polyurethane containing sufficient halogenated moieties in the polymer structure to make the catheter radiopaque.
Claim 3
Dependent Claim
15 words
A catheter of claim 1 wherein said polyurethane contains at least 10 weight percent halogen.
Claim 4
Dependent Claim
15 words
A catheter of claim 2 wherein said polyurethane contains said halogenated moieties in its backbone.
Claim 5
Dependent Claim
13 words
A catheter of claim 3 wherein said halogenated backbone includes a halogenated diol.
Claim 6
Dependent Claim
13 words
A catheter of claim 4 wherein said halogenated diol comprises a brominated diol.
Claim 7
Dependent Claim
22 words
A catheter of claim 5 wherein said brominated diol comprises a mixed ester of tetrabromophthalic anhydride with diethylene glycol and propylene glycol.
Claim 8
Dependent Claim
12 words
A catheter of claim 5 wherein said brominated diol comprises dibromoneopentyl glycol.
Claim 9
Dependent Claim
12 words
A catheter of claim 3 wherein said backbone includes a halogenated diisocyanate.
Claim 10
Dependent Claim
16 words
A catheter of claim 3 wherein said backbone includes a halogenated diol and a halogenated diisocyanate.
Claim 11
Dependent Claim
9 words
A catheter of claim 1 which is optically transparent.
Claim 12
Dependent Claim
9 words
A catheter of claim 3 which is optically transparent.
Claim 13
Dependent Claim
9 words
A catheter of claim 5 which is optically transparent.
Claim 14
Dependent Claim
15 words
A polyurethane containing sufficient halogenated moieties in the polymer structure to make the polyurethane radiopaque.
Claim 15
Dependent Claim
15 words
A polyurethane containing sufficient halogenated moieties in the polymer structure to make the polyurethane radiopaque.
Claim 16
Dependent Claim
15 words
A polyurethane of claim 13 wherein said halogenated moieties are contained in the polymer backbone.
Claim 17
Dependent Claim
17 words
A polyurethane of claim 14 containing at least about 10 weight percent halogen in the polymer structure.
Claim 18
Dependent Claim
16 words
A polyurethane of claim 15 wherein said halogenated backbone moieties are formed from a halogenated diol.
Claim 19
Dependent Claim
13 words
A polyurethane of claim 16 wherein said halogenated diol comprises a brominated diol.
Claim 20
Dependent Claim
22 words
A polyurethane of claim 17 wherein said brominated diol comprises a mixed ester of tetrabromophthalic anhydride with diethylene glycol and propylene glycol.
Claim 21
Dependent Claim
12 words
A polyurethane of claim 17 wherein said brominated diol comprises dibromoneopentyl glycol.
Claim 22
Dependent Claim
12 words
A polyurethane of claim 15 wherein said backbone includes a halogenated diisocyanate.
Claim 23
Dependent Claim
9 words
A polyurethane of claim 13 which is optically transparent.
Claim 24
Dependent Claim
9 words
A polyurethane of claim 17 which is optically transparent.
Claim 25
Dependent Claim
56 words
A radiopaque polyurethane comprising the reaction product of: (a) a diisocyanate; and (b) a diol selected from the group of low molecular weight diols, high molecular diols, or a combination of both; at least one of said diisocyanate and said diol being halogenated and present in a sufficient quantity to make said polyurethane reaction product radiopaque.
Claim 26
Dependent Claim
56 words
A radiopaque polyurethane comprising the reaction product of: (a) a diisocyanate; and (b) a diol selected from the group of low molecular weight diols, high molecular diols, or a combination of both; at least one of said diisocyanate and said diol being halogenated and present in a sufficient quantity to make said polyurethane reaction product radiopaque.
Claim 27
Dependent Claim
29 words
A polyurethane of claim 23 wherein said diol includes an amount of a brominated diol sufficient to provide said polyurethane with at least about 10 weight percent bromine therein.
Claim 28
Dependent Claim
21 words
A shaped article formed from a polyurethane containing sufficient halogenated moieties in the polymer structure to make the shaped article radiopaque.
Claim 29
Dependent Claim
21 words
A shaped article formed from a polyurethane containing sufficient halogenated moieties in the polymer structure to make the shaped article radiopaque.
Claim 30
Dependent Claim
32 words
A radiopaque optically-transparent chateter formed from a polyurethane comprising a reaction product of a brominated diol and a diisocyanate, said polyurethane containing at least about 10 weight percent bromine in its backbone.
Claim 31
Dependent Claim
32 words
A radiopaque optically-transparent chateter formed from a polyurethane comprising a reaction product of a brominated diol and a diisocyanate, said polyurethane containing at least about 10 weight percent bromine in its backbone.
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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) | 1991-02-01 | 1991-08-03 | 1992-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-01 | 1995-08-03 | 1996-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-01 | 1999-08-03 | 2000-02-02 | $7700.00 | Window Closed / Lapsed |