US4948643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible medical solution tubing
Assignee: Cryovac LLC
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Filing: 1989-04-21
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Granted: 1990-08-14
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Expires: 2009-04-21
Abstract
Abstract A medical solution tubing useful in combination with medical solution packages and pouches includes an intermediate layer comprising a polymeric material which imparts flexibility to the film; an inner layer comprising a heat resistant polymer; and an outer layer of polypropylene, ethylene propylene copolymer, or modified ethylene propylene copolymer.
Inventors
- 👤 Walter B. Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:14
CPC Classifications
B; B32; B32B; B32B1/00; B32B1/08; A; A61; A61L; A61L29/00; A61L29/08; A61L29/085; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B32B38/00; B32B38/0008; B32B2535/00; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0846; C08L23/0853; C08L23/0869; C08L23/10; C08L23/14; C08L23/142; C08L2312/00; C08L2312/06; C08L67/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/1383; Y10T428/139; Y10T428/1393; Y10T428/31504; Y10T428/31551; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31928
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
161 words
A polymeric tubing useful for medical applications comprising: (a) an intermediate layer comprising a polymeric material selected from the group consisting of very low density polyethylene, ethylene vinyl acetate copolymer, ethylene methyl acrylate copolymer, modified ethylene methyl acrylate copolymer, polyvinyl chloride, a blend of ethylene vinyl acetate copolymer and modified ethylene methyl acrylate copolymer, a blend of very low density polyethylene and modified ethylene methyl acrylate copolymer, a blend of ethylene vinyl acetate copolymer and very low density polyethylene, and modified ethylene vinyl acetate copolymer; (b) an inner layer, bonded to an inner surface of the intermediate layer, and comprising a polymeric material selected from the group consisting of copolyester, polypropylene, ethylene propylene copolymer, polyurethane, polyvinyl chloride, and a blend of copolyester and ethylene vinyl acetate copolymer; and (c) an outer layer, bonded to an outer surface of the intermediate layer, and comprising a polymeric material selected from the group consisting of polypropylene, ethylene propylene copolymer, and modified ethylene propylene copolymer.
Claim 2
Dependent Claim
161 words
A polymeric tubing useful for medical applications comprising: (a) an intermediate layer comprising a polymeric material selected from the group consisting of very low density polyethylene, ethylene vinyl acetate copolymer, ethylene methyl acrylate copolymer, modified ethylene methyl acrylate copolymer, polyvinyl chloride, a blend of ethylene vinyl acetate copolymer and modified ethylene methyl acrylate copolymer, a blend of very low density polyethylene and modified ethylene methyl acrylate copolymer, a blend of ethylene vinyl acetate copolymer and very low density polyethylene, and modified ethylene vinyl acetate copolymer; (b) an inner layer, bonded to an inner surface of the intermediate layer, and comprising a polymeric material selected from the group consisting of copolyester, polypropylene, ethylene propylene copolymer, polyurethane, polyvinyl chloride, and a blend of copolyester and ethylene vinyl acetate copolymer; and (c) an outer layer, bonded to an outer surface of the intermediate layer, and comprising a polymeric material selected from the group consisting of polypropylene, ethylene propylene copolymer, and modified ethylene propylene copolymer.
Claim 3
Dependent Claim
31 words
The tubing of claim 1 wherein the ethylene vinyl acetate copolymer of the intermediate layer has a vinyl acetate content by weight of the copolymer of between about 15% and 30%.
Claim 4
Dependent Claim
23 words
The tubing of claim 1 wherein the modified ethylene methyl acrylate copolymer of the intermediate layer includes carboxylic acid or acid anhydride moieties.
Claim 5
Dependent Claim
11 words
The polymeric tubing of claim 1 wherein the tubing is cross-linked.
Claim 6
Dependent Claim
13 words
The polymeric tubing of claim 4 wherein the tubing is cross-linked by irradiation.
References Cited (Backward Citations)
US4101699A
Cited
US4401536A
Cited
US4436778A
Cited
US4551140A
Cited
US4565738A
Cited
US4603712A
Cited
US4643926A
Cited
US4627844A
Cited
JPS6382665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |