US4872553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical fluid-filled plastic container and methods of making same
Assignee: Material Engineering Technology Laboratory Inc
•
Filing: 1987-12-29
•
Granted: 1989-10-10
•
Expires: 2007-12-29
Abstract
Abstract Disclosed is a medical fluid-filled plastic container which includes (a) a sealed inner envelope of plastic material filled with a medical fluid containing a component subject to deterioration by oxygen, (b) a deoxidizer, and (c) a sealed outer envelope of plastic material enclosing both the medical fluid-filled inner envelope and the deoxidizer, as well as several methods of making such a medical fluid-filled plastic container. This medical fluid-filled plastic container will prevent the medical fluid therein from being deteriorated even it it is subjected to steam sterilization or is stored for a long period of time.
Inventors
- 👤 Tatsuo Suzuki
- 👤 Keinosuke Isono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:48
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/14; A61J1/1462; A61J1/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
A fluid-filled plastic container comprising (a) a sealed inner envelope of plastic material filled with a fluid containing a component subject to deterioration by oxygen, said inner envelope including outlet means for changing said fluid into said inner envelope, (b) a deoxidizer, and (c) a sealed outer envelope of plastic material enclosing both said fluid-filled inner envelope and said deoxidizer wherein said deoxidizer comprises a solid deoxidizer which is enclosed in said outer envelope so that a space is left around said solid deoxidizer.
Claim 2
Dependent Claim
84 words
A fluid-filled plastic container comprising (a) a sealed inner envelope of plastic material filled with a fluid containing a component subject to deterioration by oxygen, said inner envelope including outlet means for changing said fluid into said inner envelope, (b) a deoxidizer, and (c) a sealed outer envelope of plastic material enclosing both said fluid-filled inner envelope and said deoxidizer wherein said deoxidizer comprises a solid deoxidizer which is enclosed in said outer envelope so that a space is left around said solid deoxidizer.
Claim 3
Dependent Claim
22 words
A fluid-filled plastic container as claimed in claim 1, wherein said solid deoxidizer comprises a self-reacting deoxidizer and a water dependent deoxidizer.
Claim 4
Dependent Claim
28 words
A fluid-filled plastic container as claimed in claim 1 wherein said deoxidizer is covered with a structure having openings extending from one side to the opposite side thereof.
Claim 5
Dependent Claim
27 words
A fluid-filled plastic container as claimed in claim 1 wherein said deoxidizer is enclosed in said outer envelope so that said deoxidizer rests on a corrugated plate.
Claim 6
Dependent Claim
20 words
A fluid-filled plastic container as claimed in claim 1 wherein said outer envelope is additionally filled with an inert gas.
Claim 7
Dependent Claim
20 words
A fluid-filled plastic container as claimed in claim 1 wherein said outer envelope comprises a tray and a sheet-like cover.
Claim 8
Dependent Claim
36 words
A fluid-filled plastic container as claimed in claim 1 wherein said inner envelope has a fluid outlet, said outlet is tightly closed with a rubber cap, and said rubber cap is sealed with a plastic film.
Claim 9
Dependent Claim
34 words
A fluid-filled plastic container as claimed in claim 1 said inner envelope is formed of a material selected from the group consisting of low-density polyethylene, medium-density polyethylene, linear low-density polyethylene and ethylenevinyl acetate copolymers.
Claim 10
Dependent Claim
70 words
A fluid-filled plastic container as claimed in claim 1 wherein at least a part of said outer envelope comprises a three-layer sheet formed of synthetic resins, and said sheet comprises an outer layer formed of a resin having high permeability to water vapor, an intermediate layer formed of a resin having high impermeability to oxygen gas, and an inner layer formed of a resin having low permeability to water vapor.
Claim 11
Dependent Claim
54 words
A fluid-filled plastic container as claimed in claim 1 wherein said medical fluid comprise one or more members selected from the group consisting of highly concentrated amino acid solutions containing tryptophan, fat emulsions for use by infusion, elemental diets, and infusion fluids containing antibiotics subject to oxidation or hydrolysis in the presence of oxygen.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-09 | 1993-04-10 | 1993-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-09 | 1997-04-10 | 1997-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-09 | 2001-04-10 | 2001-10-10 | $7700.00 | Window Closed / Lapsed |