US5116652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kink-resistant medical tubing and catheters
Assignee: Abbott Laboratories
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Filing: 1989-10-13
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Granted: 1992-05-26
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Expires: 2009-10-13
Abstract
Abstract Medical tubing is extruded from a composition of a divalent metal ionomer, polyamide and polyurethane, preferably in the ranges of 60-80% of ionomer, 10≧25% polyamide and 10-20% polyurethane. After extrusion the tubing may be sterilized with ethylene oxide or gamma irradiation. The tubing is substantially kink-resistant and the degree of stiffness and mechanical strength can be adjusted by varying the amount of polyamide and polyurethane so that the tubing can efficiently function as a catheter.
Inventors
- 👤 Bernard G. Alzner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:17
CPC Classifications
A; A61; A61L; A61L29/00; A61L29/14; A61L29/04; A61L29/041; Y; Y10; Y10S; Y10S525/00; Y10S525/919; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139; Y10T428/1393
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
42 words
Medical tubing comprising an extruded product of a composition consisting essentially of about 60 to about 80% of a terpolymer of ethylene, acrylic acid, and zinc acrylate, about 10 to about 25% of polyamide, and about 10 to about 20% of polyurethane.
Claim 2
Dependent Claim
42 words
Medical tubing comprising an extruded product of a composition consisting essentially of about 60 to about 80% of a terpolymer of ethylene, acrylic acid, and zinc acrylate, about 10 to about 25% of polyamide, and about 10 to about 20% of polyurethane.
Claim 3
Dependent Claim
12 words
Medical tubing according to claim 1 which is treated with ethylene oxide.
Claim 4
Dependent Claim
12 words
Medical tubing according to claim 1 which is treated with gamma irradiation.
Claim 5
Dependent Claim
19 words
Medical tubing according to claim 1 wherein said composition comprises 60% of said terpolymer, 20% polyamide and 20% polyurethane.
Claim 6
Dependent Claim
19 words
Medical tubing according to claim 1 wherein said composition comprises 80% of said terpolymer, 10% polyamide and 10% polyurethane.
Claim 7
Dependent Claim
22 words
Medical tubing according to claim 1 wherein said composition comprises 60% of said terpolymer, 10% polyamide, 10% polyurethane and 20% barium sulfate.
Claim 8
Dependent Claim
17 words
Medical tubing according to claim 1 wherein said composition comprises 85% of said terpolymer and 15% polyurethane.
Claim 9
Dependent Claim
19 words
Medical tubing according to claim 1 wherein said composition comprises 70% of said terpolymer, 20% polyamide and 10% polyurethane.
References Cited (Backward Citations)
US4616064A
Cited
US4686124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |