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METHOD FOR DETERMINING AN OPTIMAL FREQUENCY OF AN OSCILLATING MOVEMENT OF A FORCE-ACCELERATED PROJECTILE OF AN INTRACORPOREAL LITHOTRIPSY APPARATUS
METHOD FOR DETERMINING AN OPTIMAL FREQUENCY OF AN OSCILLATING MOVEMENT OF A FORCE-ACCELERATED PROJECTILE OF AN INTRACORPOREAL LITHOTRIPSY APPARATUS
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机译:用于确定体内碎石杆菌装置的力加速射弹的振荡运动的最佳频率的方法
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摘要
The invention relates to a method for determining an optimal frequency of an oscillating movement of a force-accelerated projectile of an intracorporeal pneumatic lithotripsy apparatus, including the following steps: repeatedly accelerating the projectile from a first proximal stop of an acceleration path to a second distal stop, and from the second stop to the first stop, wherein a piezo element is arranged between a proximally arranged counter bearing and a distally arranged horn and is mechanically coupled to the counter bearing and to the horn, and the horn has a distally arranged sonotrode, wherein the acceleration path is arranged in the interior of the counter bearing and of the horn and the first stop is arranged at a distal end of the counter bearing and the second stop is arranged at a distal end of the horn, detecting an electrical signal from the piezo element caused by a tremor at the first stop and/or the second stop as a result of the projectile; and using the detected electrical signal to control a medium which generates the force and which is used to accelerate the projectile from the first stop of the acceleration path to the second stop, and from the second stop to the first stop.
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