US 12,239,473 B2
Mammography apparatus
Kohei Ota, Kanagawa (JP); Takeyasu Kobayashi, Kanagawa (JP); and Sayaka Saito, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Aug. 28, 2023, as Appl. No. 18/457,289.
Claims priority of application No. 2022-137270 (JP), filed on Aug. 30, 2022.
Prior Publication US 2024/0065650 A1, Feb. 29, 2024
Int. Cl. A61B 6/50 (2024.01); A61B 6/00 (2024.01); A61B 6/04 (2006.01)
CPC A61B 6/0435 (2013.01) [A61B 6/4452 (2013.01); A61B 6/4476 (2013.01); A61B 6/502 (2013.01); A61B 6/0414 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A mammography apparatus comprising:
an arm composed of a radiation source holding portion that holds a radiation source, and an imaging table on which a breast is placed; and
a stand that is connected to the arm via a support shaft and supports the arm to be rotatable about an axis of the support shaft,
wherein the arm is capable of rotating the radiation source holding portion with respect to the imaging table by rotating the radiation source holding portion about the axis of the support shaft independently of the imaging table,
the arm is provided with a drive mechanism including a motor that rotationally drives the radiation source holding portion, and a first restriction mechanism that restricts rotation of the imaging table about the axis of the support shaft,
the first restriction mechanism is disposed on a side opposite to the radiation source with respect to the support shaft, and
the drive mechanism is disposed on a radiation source side with respect to the first restriction mechanism and in a case where a center line of the arm extending in a direction connecting the radiation source and a center of the support shaft is assumed, the drive mechanism is disposed so as to intersect the center line.