Patent US4494385A successfully refreshed from Google Patents.
US4494385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preserving organ and apparatus for preserving the same
Assignee: Hoxan Corp
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Filing: 1984-05-20
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Granted: 1985-01-22
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Expires: 2004-05-20
Abstract
Abstract A method of preserving an organ which comprises a first perfusing step of injecting blood uniform i.e., perfusing choline from an artery or portal vein of the excised organ while gradually lowering its temperature and exhausting it from the vein, continuing until the liquid is lowered to the first proximity of a low temperature before its solidifying temperature, second perfusing step of perfusing refrigerating defect-preventing dimethyl sulfoxide or glycerin agent instead of the blood perfusing liquid while gradually lowering the temperature from the first proximity of a low temperature continuing until the agent becomes the second proximity lowering temperature before its solidifying temperature, third perfusing step of perfusing the final perfusing liquid of low solidifying temperature lower than alcohol or ether instead of the agent while gradually lowering the temperature of the liquid from the second proximity of a low temperature and continuing until the liquid reaches the third proximity of a low temperature before its solidfying temperature, or until the liquid is frozen.
Inventors
- 👤 Yasuo Kuraoka
- 👤 Nobuo Sakao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:15
CPC Classifications
A; A01; A01N; A01N1/00; A01N1/10; A01N1/14; A01N1/142; A01N1/143
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
223 words
An apparatus for preserving a frozen organ comprising: a perfusing and thawing unit, and a heat insulating container capable of containing said organ, said unit having a refrigerant tank containing the refrigerant such as Freon and thermally insulated, a refrigerant temperature controlling mechanism capable of controlling the temperature of the refrigerant by a controller, a gas supplying container supplied with the refrigerant from an organ refrigerant bomb dipped in the refrigerant for said tank, an organ temperature controlling mechanism connected through a heat exchanger to a gas supply pipe, and a liquid supplying mechanism for selectively flowing out the liquid to be flowed out from a first container for blood uniformly perfusing liquid such as choline, a second container for the refrigerating defect preventing agent such as dimethyle sulfoxide or glycerin, a third container for low solidifying point final perfusing liquid such as alcohol under the control of the controller to a liquid supply pipe, said organ temperature controlling mechanism being connected via a pipe (9) to a nozzle in the container (2), and said liquid supplying mechanism being connected to an artery or portal vein in the organ in the container (2) at the pipe and the vein of the organ being prolonged externally of the container via the exhaust pipe capable of being connected to the vein 1c of the organ.
Claim 2
Independent Claim
223 words
An apparatus for preserving a frozen organ comprising: a perfusing and thawing unit, and a heat insulating container capable of containing said organ, said unit having a refrigerant tank containing the refrigerant such as Freon and thermally insulated, a refrigerant temperature controlling mechanism capable of controlling the temperature of the refrigerant by a controller, a gas supplying container supplied with the refrigerant from an organ refrigerant bomb dipped in the refrigerant for said tank, an organ temperature controlling mechanism connected through a heat exchanger to a gas supply pipe, and a liquid supplying mechanism for selectively flowing out the liquid to be flowed out from a first container for blood uniformly perfusing liquid such as choline, a second container for the refrigerating defect preventing agent such as dimethyle sulfoxide or glycerin, a third container for low solidifying point final perfusing liquid such as alcohol under the control of the controller to a liquid supply pipe, said organ temperature controlling mechanism being connected via a pipe (9) to a nozzle in the container (2), and said liquid supplying mechanism being connected to an artery or portal vein in the organ in the container (2) at the pipe and the vein of the organ being prolonged externally of the container via the exhaust pipe capable of being connected to the vein 1c of the organ.
Claim 3
Dependent Claim
27 words
The apparatus as claimed in claim 1, wherein said refrigerant temperature controlling mechanism comprises a temperature sensor connected to said controller, an electric heater, and an agitator.
Claim 4
Dependent Claim
51 words
The apparatus as claimed in claim 1, wherein the first, second and third containers of said liquid supplying mechanism are dipped in the refrigerant in said cooling tank, and the opening or closing of said first, second and third control valves provided at said respective container are controlled by said controller.
Claim 5
Dependent Claim
37 words
The apparatus as claimed in claim 1, wherein the heat exchanger formed between the first, second and third control valves of said liquid supplying mechanism and the pump is dipped in the refrigerant in said cooling tank.
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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) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |