Patent US4465488A successfully refreshed from Google Patents.
US4465488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible multi-chamber medical fluid container
Assignee: Baxter International Inc
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Filing: 1981-03-23
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Granted: 1984-08-14
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Expires: 2001-03-23
Abstract
Abstract A collapsible medical agent container (10) is disclosed having walls (34, 36, 38) defining a plurality of chambers (12, 14) for containing selected quantities of one or more medical fluids or a dry or encapsulated drug or other reagent in separate sealed condition. Opening means which communicates between adjacent chambers (12, 14) for passage of fluid from one chamber to another, is normally closed by frangible closure (18) which maintains the chambers (12, 14) in separate hermetically sealed condition until flow between the chambers (12, 14) is needed. The frangible closure (18) has an elongated relatively rigid portion (20) which extends into one of the chambers and is disposed within a protective retentive tube (24), and a relatively weakened portion (22) adjacent the opening means. The closure (18) is manually openable from exterior the container (10) to permit flow between the chambers (12, 14), such as for mixing, by grasping the elongated portion (20) through the walls (30, 32) of the container (10) and bending it until the relatively weakened portion (22) is fractured.
Inventors
- 👤 Frank M. Richmond
- 👤 Kenneth W. Larson
- 👤 Robert A. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:58
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/14; A61J1/20; A61J1/2093; A61J1/05; A61J1/10; A61J1/2003; A61J1/202; A61J1/2027
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
130 words
A container for storing medical agents and the like in separate chambers, said container comprising: flexible plastic walls selectively sealed to define a plurality of adjacent chambers; a connecting port communicating between a pair of said chambers; opening means in one of said chambers for permitting agent flow from said chamber and out of said container; frangible closure means preventing agent flow through said connecting port to maintain said adjacent chambers in separate sealed condition, said frangible closure means being manually openable from the exterior of said container to permit agent flow between said adjacent chambers; and retention means sealed within said connecting port, frictionally restraining said frangible closure means and preventing said frangible closure means from migrating within said adjacent chambers after the opening of said frangible closure means.
Claim 2
Dependent Claim
130 words
A container for storing medical agents and the like in separate chambers, said container comprising: flexible plastic walls selectively sealed to define a plurality of adjacent chambers; a connecting port communicating between a pair of said chambers; opening means in one of said chambers for permitting agent flow from said chamber and out of said container; frangible closure means preventing agent flow through said connecting port to maintain said adjacent chambers in separate sealed condition, said frangible closure means being manually openable from the exterior of said container to permit agent flow between said adjacent chambers; and retention means sealed within said connecting port, frictionally restraining said frangible closure means and preventing said frangible closure means from migrating within said adjacent chambers after the opening of said frangible closure means.
Claim 3
Dependent Claim
56 words
A container in accordance with claim 1 wherein said frangible closure means comprises an elongated relatively rigid portion extending into a selected one of said adjacent chambers and a weakened portion adjacent said first opening means, whereby bending of said elongated portion results in fracturing said weakened portion to permit agent flow between said adjacent chambers.
Claim 4
Dependent Claim
23 words
A container in accordance with claim 1 or 2 wherein said retention means comprises a flexible tube disposed around said frangible closure means.
Claim 5
Dependent Claim
30 words
A container in accordance with claim 3 wherein said tube has longitudinally arrayed openings along its length to facilitate agent flow between said chambers upon opening said frangible closure means.
Claim 6
Dependent Claim
123 words
A container for storing medical agents and the like in separate chambers, said container comprising: flexible plastic walls selectively sealed to define a plurality of adjacent chambers; a connecting port communicating between a pair of said chambers; opening means in one of said chambers for permitting agent flow from said chamber and out of said container; frangible closure means preventing agent flow through said connecting port to maintain said adjacent chambers in separate sealed condition, said frangible closure means being manually openable from the exterior of said container to permit agent flow between said adjacent chambers; and retention means sealed within said connecting port, preventing said frangible closure means from migrating within said adjacent chambers after the opening of said frangible closure means.
Claim 7
Dependent Claim
123 words
A container for storing medical agents and the like in separate chambers, said container comprising: flexible plastic walls selectively sealed to define a plurality of adjacent chambers; a connecting port communicating between a pair of said chambers; opening means in one of said chambers for permitting agent flow from said chamber and out of said container; frangible closure means preventing agent flow through said connecting port to maintain said adjacent chambers in separate sealed condition, said frangible closure means being manually openable from the exterior of said container to permit agent flow between said adjacent chambers; and retention means sealed within said connecting port, preventing said frangible closure means from migrating within said adjacent chambers after the opening of said frangible closure means.
Claim 8
Dependent Claim
154 words
A container for storing medical agents and the like in separate chambers, said container comprising: flexible plastic walls selectively sealed to define a plurality of adjacent chambers; a connecting port communicating between a pair of said chambers; opening means in one of said chambers for permitting agent flow from said chamber and out of said container; frangible closure means preventing agent flow through said connecting port to maintain said adjacent chambers in separate sealed condition, said frangible closure means being manually openable from the exterior of said container to permit agent flow between said adjacent chambers; and retention means including a flexible tube disposed around said frangible closure means, said flexible tube sealed within said connecting port and including an end of reduced diameter which restrains said frangible closure means within said flexible tube, thereby preventing said frangible closure means from migrating within said adjacent chambers after the opening of said frangible closure means.
Claim 9
Dependent Claim
154 words
A container for storing medical agents and the like in separate chambers, said container comprising: flexible plastic walls selectively sealed to define a plurality of adjacent chambers; a connecting port communicating between a pair of said chambers; opening means in one of said chambers for permitting agent flow from said chamber and out of said container; frangible closure means preventing agent flow through said connecting port to maintain said adjacent chambers in separate sealed condition, said frangible closure means being manually openable from the exterior of said container to permit agent flow between said adjacent chambers; and retention means including a flexible tube disposed around said frangible closure means, said flexible tube sealed within said connecting port and including an end of reduced diameter which restrains said frangible closure means within said flexible tube, thereby preventing said frangible closure means from migrating within said adjacent chambers after the opening of said frangible closure means.
References Cited (Backward Citations)
US2037175A
Cited
US2157169A
Cited
US2176923A
Cited
US2714974A
Cited
US2750075A
Cited
US3006341A
Cited
US3064802A
Cited
US3110308A
Cited
US3157312A
Cited
US3224571A
Cited
US3482572A
Cited
US3520471A
Cited
US3747813A
Cited
US3685795A
Cited
US3911918A
Cited
US3985135A
Cited
US4235233A
Cited
US4191231A
Cited
US4294247A
Cited
US4140162A
Cited
US4198972A
Cited
US4195632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |