Method of preserving organ and apparatus for preserving the same

Claim 1

A method of preserving an organ comprising: first perfusing step of injecting blood uniformly perfusing liquid such as choline from an artery or portal vein of the excised organ while gradually lowering its temperature and exhausting it from the vein, continuing said step until the liquid is lowered to the first proximity lowering temperature before its solidifying temperature, second perfusing step of perfusing refrigerating defect preventing agent such as dimethyl sulfoxide or glycerin instead of the blood uniformly perfusing liquid while gradually lowering its temperature from the first proximity lowering temperature, continuing said second step 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 the agent such as alcohol or ether instead of the agent while gradually lowering the liquid from the second proximity lowering temperature, continuing said third step until the liquid becomes the third proximity lowering temperature before its solidifying temperature, or until the liquid is frozen, and preserving the frozen organ thus obtained in the frozen state.

Claim 2

A method of preserving an organ comprising: first perfusing step of injecting blood uniformly perfusing liquid such as choline from an artery or portal vein of the excised organ while gradually lowering its temperature and exhausting it from the vein, continuing said step until the liquid is lowered to the first proximity lowering temperature before its solidifying temperature, second perfusing step of perfusing refrigerating defect preventing agent such as dimethyl sulfoxide or glycerin instead of the blood uniformly perfusing liquid while gradually lowering its temperature from the first proximity lowering temperature, continuing said second step 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 the agent such as alcohol or ether instead of the agent while gradually lowering the liquid from the second proximity lowering temperature, continuing said third step until the liquid becomes the third proximity lowering temperature before its solidifying temperature, or until the liquid is frozen, and preserving the frozen organ thus obtained in the frozen state.

Claim 3

A method of preserving an organ comprising: first perfusing step of injecting blood uniformly perfusing liquid such as choline from an artery or portal vein of the excised organ while gradually lowering its temperature and exhausting it from the vein, continuing said step until the liquid is lowered to the first proximity lowering temperature before its solidifying temperature, second perfusing step of perfusing refrigerating defect preventing agent such as dimethyl sulfoxide or glycerin instead of the blood uniformly perfusing liquid while gradually lowering its temperature from the first proximity lowering temperature, continuing said second step 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 the agent such as alcohol or ether instead of the agent while gradually lowering the liquid from the second proximity lowering temperature, continuing said third step until the liquid becomes the third proximity lowering temperature before its solidifying temperature, or until the liquid is frozen, preserving the frozen organ thus obtained in the frozen state, the first thawing and perfusing step of thawing the final perfusing liquid in the blood of said organ by gradually raising the organ thus preserved and frozen and then perfusing the liquid from said artery or portal vein to the vein while gradually raising the liquid, continuing said first thawing and perfusing step until becoming said second proximity lowering temperature, the second thawing and perfusing step of perfusing the agent instead of the liquid while gradually raising the temperature from said second proximity lowering temperature, continuing said second thawing the perfusing step until becoming said first proximity lowering temperature, the third thawing and perfusing step of perfusing the blood uniformly perfusing liquid instead of the agent while gradually raising the liquid from said first proximity lowering temperature, continuing said third thawing and perfusing step, and applying predetermined blood to said organ.

Claim 4

A method of preserving an organ comprising: first perfusing step of injecting blood uniformly perfusing liquid such as choline from an artery or portal vein of the excised organ while gradually lowering its temperature and exhausting it from the vein, continuing said step until the liquid is lowered to the first proximity lowering temperature before its solidifying temperature, second perfusing step of perfusing refrigerating defect preventing agent such as dimethyl sulfoxide or glycerin instead of the blood uniformly perfusing liquid while gradually lowering its temperature from the first proximity lowering temperature, continuing said second step 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 the agent such as alcohol or ether instead of the agent while gradually lowering the liquid from the second proximity lowering temperature, continuing said third step until the liquid becomes the third proximity lowering temperature before its solidifying temperature, or until the liquid is frozen, preserving the frozen organ thus obtained in the frozen state, the first thawing and perfusing step of thawing the final perfusing liquid in the blood of said organ by gradually raising the organ thus preserved and frozen and then perfusing the liquid from said artery or portal vein to the vein while gradually raising the liquid, continuing said first thawing and perfusing step until becoming said second proximity lowering temperature, the second thawing and perfusing step of perfusing the agent instead of the liquid while gradually raising the temperature from said second proximity lowering temperature, continuing said second thawing the perfusing step until becoming said first proximity lowering temperature, the third thawing and perfusing step of perfusing the blood uniformly perfusing liquid instead of the agent while gradually raising the liquid from said first proximity lowering temperature, continuing said third thawing and perfusing step, and applying predetermined blood to said organ.