Isocentric lithotripter
First Claim
1. An extracorporeal isocentric lithotripter comprising a table for supporting a patient having a bodily concretion to be destroyed, means for emitting radiation to determine the location of the concretion to be destroyed in a patient on said table, a base support, means on said base support for supporting said radiation emitting means for rotation about an isocentric axis, means for moving the patient on said table to position said concretion on said isocentric axis, a reflector having a first focus point within said reflector and a second focus point exteriorly of said reflector, means for mounting said reflector on said base support for rotation about said isocentric axis to a position on either side of said radiation emitting means, said reflector including means for generating shockwaves to destroy the bodily concretion, said reflector mounting means including means for moving said reflector rotationally about said axis and into engagement with the patient on said table and positioning said second focus point on said isocentric axis in coincidence with said concretion with shockwaves.
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Abstract
An extracorporeal isocentric lithotripter is presented having a common isocentric axis of rotation. The patient having a bodily concretion to be destroyed lies on a table which is movable to position the concretion on the isocentric axis. An X-ray emitter and an image intensifier lie on a common diameter which is rotated about said isocentric axis to position said X-ray apparatus and said image intensifier in at least two positions to ascertain the location of the concretion. A shockwave lithotripter shockhead is mounted on a support rotatable about said isocentric axis to align said shockhead with said bodily concretion. The shockhead is mounted on said rotatable support by a double pivot arrangement to bring the second focus point of said reflector into coincidence with said bodily concretion for destruction of said concretion.
196 Citations
9 Claims
- 1. An extracorporeal isocentric lithotripter comprising a table for supporting a patient having a bodily concretion to be destroyed, means for emitting radiation to determine the location of the concretion to be destroyed in a patient on said table, a base support, means on said base support for supporting said radiation emitting means for rotation about an isocentric axis, means for moving the patient on said table to position said concretion on said isocentric axis, a reflector having a first focus point within said reflector and a second focus point exteriorly of said reflector, means for mounting said reflector on said base support for rotation about said isocentric axis to a position on either side of said radiation emitting means, said reflector including means for generating shockwaves to destroy the bodily concretion, said reflector mounting means including means for moving said reflector rotationally about said axis and into engagement with the patient on said table and positioning said second focus point on said isocentric axis in coincidence with said concretion with shockwaves.
Specification