Sony Corporation

Hakko Electric Machine Works, Co. Ltd.

Takefumi Daido

Katsumi Yamatogi

Kazue Kato

Akira Yamazaki

Ryuta Kanno

Masaru Maruyama

Tetsuo Sekine

Masao Ohto

Katsuo Takada

Chikara Nakao

The set of biopsy needles of the invention is provided with a shaft member for an inner needle 6 which has an inner needle base 22 at the front end to fix an inner needle 24, a shaft member for an outer needle 13 which has an outer needle base 21 at the front end to fix an outer needle 23, a gripping member 1 for operation which fixes the shaft member for the inner needle 6 and axially movably support the shaft for the outer needle 13, a actuating member 9 which gives protrusion force to the shaft member for the outer needle 13, a holding member 15 which holds the shaft member for the outer needle 13 at the position before protrusion against the protrusion force of the actuating member 9 and releases from holding the shaft member for the outer needle 13 before protrusion by outside operation, and a rotation generating member 10 which gives rotation force to the shaft member for the outer needle 13 when the shaft member for the outer needle 13 moves axially.

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Tokyo, Japan

Takefumi Daido