Variable field collimator

The invention discloses a variable field collimator, and belongs to the field of medical equipment. The variable field collimator is composed of a circular outer barrel (1) and blocks (2), wherein a turning ring (3) is installed on the outer barrel (1); the turning ring (3) is fixedly provided with...

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Bibliographic Details
Main Authors LI CHAO, YAO JIN, XIONG DUANPING, WEI CHONGGAO, CHEN WEIMING, WU DAKE
Format Patent
LanguageChinese
English
Published 15.05.2013
Subjects
ELECTROTHERAPY
GAMMA RAY OR X-RAY MICROSCOPES
HUMAN NECESSITIES
HYGIENE
IRRADIATION DEVICES
MAGNETOTHERAPY
MEDICAL OR VETERINARY SCIENCE
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
PHYSICS
RADIATION THERAPY
TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOTOTHERWISE PROVIDED FOR
ULTRASOUND THERAPY
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Summary:The invention discloses a variable field collimator, and belongs to the field of medical equipment. The variable field collimator is composed of a circular outer barrel (1) and blocks (2), wherein a turning ring (3) is installed on the outer barrel (1); the turning ring (3) is fixedly provided with a cam (4), the cam (4) pins one end of a pushing rod (5), and the other end of the pushing rod (5) penetrates through a support (6) which is fixed on the outer barrel (1) to abut against the blocks (2); one end of a spring group (7) is connected on the support (6) in a sliding mode, and the other end of the spring group (7) is fixed on each block (2); a groove (8) is formed in one face of each block (2), a flange (9) which is matched with the groove (8) is arranged on the side face of each block (2), and a plurality of blocks (2) are sequentially connected with flanges (9) through grooves (8) and to form a block ring. According to the variable field collimator, the defects that structure is more complicated in the
Bibliography:Application Number: CN20121459828