X-ray or gamma ray systems or devices – Specific application – Mammography
Patent
1992-01-30
1992-12-08
Church, Craig E.
X-ray or gamma ray systems or devices
Specific application
Mammography
378196, 378197, A61B 604
Patent
active
051704200
ABSTRACT:
A mammography apparatus has a holder for a radiation source, the holder being rotatable around a horizontal axle which extends from a bearing which is vertically displaceable in a stand. The holder is maintained at a selected height by a weight compensation system operating on the bearing. In order to permit the holder to be rotated while still maintaing the same vertical position from one exposure to another, so that the examination subject need not be re-positioned between exposures, the horizontal axle is disposed outside of the center of gravity of the holder, and is connected to a first part which extends parallel to the axle at a distance from the center line thereof. The first part engages a second part which is movable in the vertical direction, and is connected to the weight compensation system. The distance between the first part and the center line of the axle is selected to that, when the axle is rotated, the first part is displaced along a circular arc, and the second part is simultaneously vertically displaced so that the weight compensation system generates a force which balances the torque of the holder.
REFERENCES:
patent: 4613982 (1966-09-01), Dornheim et al.
patent: 5050197 (1991-09-01), Virta et al.
Church Craig E.
Siemens Aktiengesellschaft
LandOfFree
Radiological apparatus for mammographic examinations does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radiological apparatus for mammographic examinations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiological apparatus for mammographic examinations will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-965642