Patent US3942527A successfully refreshed from Google Patents.
US3942527A
Expired / Lapsed
US
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Blood oxygenation process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1974-01-15
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Granted: 1976-03-09
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Expires: 1994-01-15
Abstract
Abstract A process for oxygenating blood which comprises, contacting an emulsion, the exterior phase of which comprises an oxygen saturated fluorinated organic compound surrounding aqueous droplets containing a carbon dioxide absorbent or reactant, with mammalian blood. The oxygen permeates rapidly from the fluorocarbon into the blood, while the CO2 within the blood permeates through the fluorocarbon into the aqueous interior phase wherein it is absorbed or converted by a reactant to a nonpermeable form. In this manner the blood is oxygenated and CO2 is simultaneously removed.
Inventors
- 👤 Norman N. Li
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:34
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/32; B; B01; B01D; B01D61/00; B01D61/38; B01D61/40; A61M2202/00; A61M2202/02; A61M2202/0225; A61M2202/04; A61M2202/0468; A61M2202/0476
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
A process for oxygenating human blood and simultaneously removing CO 2 which comprises separating venous blood from a human body by shunting said venous blood prior to its return to the heart, contacting said shunted blood in a contacting zone, with an emulsion, the exterior phase which is liquid at a temperature of from 4° to 35°C and which comprises a C 1 to C 40 fluorinated organic compound, said exterior phase further comprising dissolved oxygen, surrounding aqueous droplets, whereby said oxygen permeates into said blood and the CO 2 in said blood permeates into said aqueous droplets, and returning said blood having increased oxygen content and decreased CO 2 content to said human body.
Claim 2
Dependent Claim
115 words
A process for oxygenating human blood and simultaneously removing CO 2 which comprises separating venous blood from a human body by shunting said venous blood prior to its return to the heart, contacting said shunted blood in a contacting zone, with an emulsion, the exterior phase which is liquid at a temperature of from 4° to 35°C and which comprises a C 1 to C 40 fluorinated organic compound, said exterior phase further comprising dissolved oxygen, surrounding aqueous droplets, whereby said oxygen permeates into said blood and the CO 2 in said blood permeates into said aqueous droplets, and returning said blood having increased oxygen content and decreased CO 2 content to said human body.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein said contacting takes place at a temperature of from 4° to 35°C.
Claim 4
Dependent Claim
14 words
The process of claim 1 wherein said aqueous droplets contain a CO 2 absorbent.
Claim 5
Dependent Claim
20 words
The process of claim 1 wherein said aqueous droplets further comprise a reactant capable of reacting with CO 2 .
Claim 6
Dependent Claim
11 words
The process of claim 4 wherein said reactant comprises sodium carbonate.
Claim 7
Dependent Claim
28 words
The process of claim 4 wherein said exterior phase comprises a C 1 to C 40 fluorinated organic solvent and a C 5 to C 25 fluorinated surfactant.
Claim 8
Dependent Claim
13 words
The process of claim 6 wherein said surfactant and said solvent are perfluorinated.
Claim 9
Dependent Claim
28 words
The process of claim 6 wherein said surfactant contains from 5 to 20 carbons and is selected from the group consisting of fluorinated ethers, esters and carboxylic acids.
References Cited (Backward Citations)
US3389078A
Cited
US3396510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |