US4008754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the conservation of isolated organs and the like
Assignee: Messer Griesheim GmbH
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Filing: 1975-08-06
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Granted: 1977-02-22
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Expires: 1995-08-06
Abstract
Abstract Organs or parts of organs are conserved by being rinsed with an inert gas or mixture until they are free of water and blood. Their vascular systems are filled at slight excess pressure of an inert gas or gas mixture, and finally the organs or parts are cooled at excess pressure in an inert gas atmosphere to a temperature below -100° C and are stored at this temperature.
Inventors
- 👤 Jurgen Kraushaar
- 👤 Rolf Voss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:16
CPC Classifications
A; A23; A23B; A23B4/00; A23B4/06; A23B4/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
115 words
In a process for conserving isolated organs by the use of low temperatures, characterized in that the organs are rinsed with an inert gas until they are free of water and blood, then the vascular systems for the organs are filled at a slight excess pressure with the inert gas with the vascular openings being closed, the organs then being inserted into a gas tight container having an inert gas atmosphere with a pressure greater than atmospheric being in the container, then the organs in the container are cooled at excess pressure in its inert gas atmosphere to a temperature below -100° C, and finally the organs are stored in the container at this temperature.
Claim 2
Dependent Claim
115 words
In a process for conserving isolated organs by the use of low temperatures, characterized in that the organs are rinsed with an inert gas until they are free of water and blood, then the vascular systems for the organs are filled at a slight excess pressure with the inert gas with the vascular openings being closed, the organs then being inserted into a gas tight container having an inert gas atmosphere with a pressure greater than atmospheric being in the container, then the organs in the container are cooled at excess pressure in its inert gas atmosphere to a temperature below -100° C, and finally the organs are stored in the container at this temperature.
Claim 3
Dependent Claim
17 words
The process according to claim 1, characterized in that the organs are rinsed and filled with helium.
Claim 4
Dependent Claim
17 words
The process according to claim 2, characterized in that the cooling takes place under a nitrogen atmosphere.
Claim 5
Dependent Claim
18 words
The process according to claim 2, characterized in that the cooling takes place under an atmosphere of helium.
Claim 6
Dependent Claim
20 words
The process according to claim 2, characterized in that the organs are thawed out by irradiation in intervals with microwaves.
Claim 7
Dependent Claim
17 words
The process according to claim 5, characterized in that the organ to be conserved is a kidney.
Claim 8
Dependent Claim
22 words
The process according to claim 2, characterized in that the hollow spaces of the vascular systems are also filled with the gas.
Claim 9
Dependent Claim
18 words
The process according to claim 2, characterized in that the cooling takes place under an atmosphere of xenon.
Claim 10
Dependent Claim
19 words
The process according to claim 2, characterized in that the cooling takes place under an atmosphere of sulfur hexafluoride.
Claim 11
Dependent Claim
83 words
In a process for preserving meat provisions which may later be thawed and utilized as fresh meat, characterized in that the meat is rinsed with an insert gas, then the vascular systems for the meat are filled at a slight excess pressure with the gas and the vascular openings are closed, the meat is then cooled at excess pressure in an inert gas atmosphere in a gas tight container to a temperature below -100° C, and the meat is stored at this temperature.
Claim 12
Dependent Claim
83 words
In a process for preserving meat provisions which may later be thawed and utilized as fresh meat, characterized in that the meat is rinsed with an insert gas, then the vascular systems for the meat are filled at a slight excess pressure with the gas and the vascular openings are closed, the meat is then cooled at excess pressure in an inert gas atmosphere in a gas tight container to a temperature below -100° C, and the meat is stored at this temperature.
Claim 13
Dependent Claim
15 words
The process according to claim 10, characterized in that the meat is rinsed with helium.
Claim 14
Dependent Claim
19 words
The process according to claim 11, characterized in that the meat is thawed by irradiation in intervals with microwaves.
References Cited (Backward Citations)
US3470942A
Cited
US3677024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |