US5056568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automated system for adding multiple fluids to a single container
Assignee: Baxter International Inc
•
Filing: 1990-05-04
•
Granted: 1991-10-15
•
Expires: 2010-05-04
Abstract
Abstract A method for transferring fluids from multiple source containers to a single receiving container wherein fluid is transferred from a source container to a transfer chamber under the influence of a differential pressure and under the control of an occlusion force between the source container and the transfer chamber; the amount of fluid in the transfer chamber is confirmed; and, subsequently, the fluid is transferred from the transfer chamber to the receiving container under the influence of a differential pressure and under the control of an occlusion force between the transfer chamber and the receiving container.
Inventors
- 👤 Aleandro DiGianfilippo
- 👤 James R. Hitchcock
- 👤 Robert E. Lewis
- 👤 Randall A. Zielsdorf
- 👤 James P. Vos
- 👤 Rudolph Starai
- 👤 Michael J. Becker
- 👤 Donald W. Warner
- 👤 Leon Huang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:15
CPC Classifications
G; G01; G01G; G01G17/00; G01G17/04; G01G17/06; A; A61; A61J; A61J3/00; A61J3/002; B; B01; B01F; B01F33/00; B01F33/80; B01F33/84; B29; B29C; B29C53/00; B29C53/02; B29C53/08; B29C53/083; B67; B67D; B67D1/00; B67D1/08; B67D1/10; B67D1/108; B67D1/12; A61J2200/00; A61J2200/70; A61J2200/74
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
235 words
A method for transferring fluids from multiple source containers to a single receiving container, comprising the steps of: providing a transfer chamber in fluid communication between said source containers and said receiving container, each source container having a separable fluid communication line connected to said transfer chamber which is initially subject to a removable occlusion force, said transfer chamber and said receiving container also having a fluid communication line therebetween which is initially subject to a removable occlusion force; selecting an amount of one of said fluids to be transferred; generating a signal indicating said amount of said fluid to be transferred; transferring said selected fluid from its source container to said chamber under the influence of a pressure differential and by removing the occlusion force between said source container and said transfer chamber; measuring the amount of said fluid in said chamber; generating a signal indicative of the actual amount of said selected fluid present in said chamber; terminating transfer of said fluid when said actual amount of said fluid present in said chamber is equal to or greater than said selected amount by again subjecting said fluid communication between said source container and said transfer chamber to an occlusion force; and then transferring said fluid from said chamber to said receiving chamber under the influence of a pressure differential and by removing the occlusion force between said transfer chamber and said receiving container.
Claim 2
Independent Claim
235 words
A method for transferring fluids from multiple source containers to a single receiving container, comprising the steps of: providing a transfer chamber in fluid communication between said source containers and said receiving container, each source container having a separable fluid communication line connected to said transfer chamber which is initially subject to a removable occlusion force, said transfer chamber and said receiving container also having a fluid communication line therebetween which is initially subject to a removable occlusion force; selecting an amount of one of said fluids to be transferred; generating a signal indicating said amount of said fluid to be transferred; transferring said selected fluid from its source container to said chamber under the influence of a pressure differential and by removing the occlusion force between said source container and said transfer chamber; measuring the amount of said fluid in said chamber; generating a signal indicative of the actual amount of said selected fluid present in said chamber; terminating transfer of said fluid when said actual amount of said fluid present in said chamber is equal to or greater than said selected amount by again subjecting said fluid communication between said source container and said transfer chamber to an occlusion force; and then transferring said fluid from said chamber to said receiving chamber under the influence of a pressure differential and by removing the occlusion force between said transfer chamber and said receiving container.
Claim 3
Dependent Claim
37 words
The method of claim 1, wherein said step of transferring said selected fluid from its source container to said chamber under the influence of a pressure differential comprises the step of placing said chamber under vacuum pressure.
Claim 4
Dependent Claim
46 words
The method of claim 1, wherein said step of transferring said fluid from said chamber to said receiving chamber under the influence of a pressure differential comprises the steps of placing said chamber on a positive pressure and placing said receiving container under a vacuum pressure.
Claim 5
Dependent Claim
51 words
The method of claim 1, wherein said step of terminating transfer of said fluid when said actual amount of said fluid present in said chamber is equal to or greater than said selected amount comprises reestablishing said occlusion force on the fluid communication line connecting said source container to said chamber.
Claim 6
Dependent Claim
32 words
The method of claim 1, wherein said step of selecting an amount of one of said fluids to be transferred comprises depressing one or more numeric keys operative to effect such selection.
Claim 7
Dependent Claim
27 words
The method of claim 2, wherein said step of measuring the amount of fluid in sid chamber comprises weighing said chamber by means of a load cell.
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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) | 1994-10-14 | 1995-04-15 | 1995-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-14 | 1999-04-15 | 1999-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-14 | 2003-04-15 | 2003-10-15 | $7700.00 | Window Closed / Lapsed |