LASER [...] PRODUCTION IS AUTOMATED BRIDGES FOR BRACHYTHERAPY

文件类型：PDF文档
文件大小：223K
LASER [...] PRODUCTION AND AUTOMATED SOURCES FOR BRACHYTHERAPY. The present invention relates to a laser [...] rare production is automated for brachytherapy sources, composed of a laser Na : YAG laser which performs, both cutting the tube into pieces, and sealing the ends of the pieces thus obtained, having horizontal movement with adjustable speed to follow the shrinkage of the piece of tube when the seal is made, and upright for changing focus so as to enable focus on the tube to cut it, blur to operation of sealing the piece of tube thus obtained, as well as focus on ends sealed for retrieving excess material, so that the source for brachytherapy approximates a point source. The also has two fixed heads rotating with tweezers, one of them having powered driveshaft on tweezers to rotate the tube during the cutting operation and the piece of tube obtained during the first operation of sealing, and a moving crosshead, powered drive shaft also having in its clamp to rotate the piece of tube during the second sealing. Further has a loading shaft guided on two bearings guide is driven by a toothed strap and stepping motor, to push the radioactive material (and markers, if needed), into the tube piece, and a turbojet that provides, gravity, radioactive material and rearward (if they are not incorporated into the radioactive material), that allow identify the position and orientation of the source for brachytherapy. The machine control is done with programmable microprocessor, which controls the program and allows all the proper parameters to each diameter and type of material of the tube