Patent ID: 7204834

Claim:
An apparatus for the treatment of tumors ( 1 ), comprising at least one generator ( 5 ) having at least one power source ( 2 , 3 , 4 ), at least one power sink ( 2 ′, 3 ′, 4 ′), at least one electrode input needle ( 6 , 7 , 8 ) connected to a power source ( 2 , 3 , 4 ) and at least one electrode output needle ( 6 ′, 7 ′, 8 ′) connected to a power sink ( 2 ′, 3 ′, 4 ′) by means of which current can be conducted into, or, respectively, out of, the tumor ( 1 ), a separate power supply control means ( 2 a , 3 a , 4 a ) connected to each power source ( 2 , 3 , 4 ) for independently controlling the current flowing through each input electrode needle ( 6 , 7 , 8 ) into the tumor ( 1 ) and, a separate power sink control means ( 2 ′ a , 3 ′ a , 4 ′ a ) connected to each power sink ( 2 ′, 3 ′, 4 ′) for independently limiting the current flowing through each output electrode needle ( 6 ′, 7 ′, 8 ′) out of the tumor ( 1 ).