Patent ID: 7766838

Claim:
An ultrasound probe comprising: a transducer unit including a plurality of transducers for transmitting and receiving an ultrasound respectively located in correspondence with adjacent positions of transmission and reception; and a flexible circuit board of at least one layer located in correspondence with said positions of transmission and reception, in which signal lines for supplying a transmission signal and for extracting a reception signal to/from said positions are installed; wherein the flexible circuit board includes a first part which extends from the transducer unit in a longitudinal direction of the plurality of transducers and a second part which is connected to the first part and extends at predetermined angle with respect to the longitudinal direction extension of the first part so as to form a bend at the predetermined angle with respect to the first part; wherein the flexible circuit board has slits in the longitudinal direction dividing signal lines of the flexible circuit board into a plurality of sections of the flexible circuit board, and each section of the flexible circuit board which is divided by at least one of the slits of the flexible circuit board is individually spirally wound around a longitudinal axis which is different from another longitudinal axis around which another section of the flexible circuit board is individually spirally wound; and wherein a length of the portions of the first part in the longitudinal direction gradually decrease as the portion becomes closer to an inner side of the bend.