US4228032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of storing blood and a blood storage bag therefore
Assignee: Dow Silicones Corp
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Filing: 1978-11-06
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Granted: 1980-10-14
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Expires: 1998-11-06
Abstract
Abstract A method of storing blood is disclosed in which a plastic blood collection bag is further supplied with silicone rubber into which pure Ca(OH) 2 has been compounded. The method is an efficient way to prolong the useful life of blood, especially the erythrocytes, since their viability can be enhanced by removal of CO 2 from the blood. Such removal can be a method of maintaining an adequate pH balance in the complex blood system which appears to be essential to maintaining the blood in storage for prolonged periods of time.
Inventors
- 👤 Thomas D. Talcott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:24
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/05; A61J1/10; A01; A01N; A01N1/00; A01N1/10; A01N1/12; A01N1/122
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
28 words
A composition useful for prolonging the storage of blood which consists of a cured silicone rubber which has been compounded in its uncured state with Ca(OH) 2 .
Claim 2
Dependent Claim
28 words
A composition useful for prolonging the storage of blood which consists of a cured silicone rubber which has been compounded in its uncured state with Ca(OH) 2 .
Claim 3
Dependent Claim
26 words
A composition as claimed in claim 1 wherein the silicone rubber is present in a ratio of 100 parts to 5-30 parts of Ca(OH) 2 .
Claim 4
Dependent Claim
42 words
A composition as claimed in claim 1 wherein the silicone rubber containing the Ca(OH) 2 is cured by the use of peroxide catalysts and heat and the cure is effected through the reaction of unsaturated radicals on silicon in the silicone rubber.
Claim 5
Dependent Claim
45 words
A composition as claimed in claim 1 wherein the silicone rubber containing the Ca(OH) 2 is cured by the use of platinum catalysts and the cure is effected through the reaction of hydrogen radicals on silicon and unsaturated radicals on silicon in the silicone rubber.
Claim 6
Dependent Claim
22 words
A composition as claimed in claim 1 contained in a blood storage bag in heterogenous admixture with an artificial blood storage media.
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) | 1983-10-14 | 1984-04-14 | 1984-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-14 | 1988-04-14 | 1988-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-14 | 1992-04-14 | 1992-10-14 | $7700.00 | Window Closed / Lapsed |