Patent ID: 8727133

Claim:
Extraction device for execution of a method for the preparation of at least one compound from blood, comprising a first needle ( 2 ) for insertion into a first sealed container to a first level for extraction of a blood fraction at said first level within the first sealed container reached by said needle, said first sealed container maintained at a pressure below atmospheric pressure and adapted to contain blood fractions at different levels therein, a second needle ( 4 ) for insertion into a second sealed container, the first needle and the second needle providing internal fluid communication for transfer of the first fraction of blood to the second sealed container, said second sealed container maintained at a pressure lower than the pressure within the first sealed container, a switch-unit ( 3 ), arranged between the first needle and the second needle, for opening and closing the fluid communication between the first needle and the second needle, said switch-unit ( 3 ) being operated by a button ( 3 a ).