Apparatus for the contact-free disintegration of calculi
July 24, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3168659 3245251 Apparatus for focusing and collimating ultrasonic waves Apparatus for breaking-up, without contact, concrements present in the body of a living being Ultrasonic transducer Composite acoustic lens Acoustic lens system Pulse-echo ultrasonic-imaging display system Method and apparatus for selective cell destruction Stimulating electro-acoustical transducers InventorsAssigneeApplicationNo. 06/634021 filed on 07/24/1984US Classes:601/4Contact-free comminution of concretionExaminersPrimary: Crowder, Clifford D.Attorney, Agent or FirmInternational ClassesG10K 11/00 (20060101)G10K 9/12 (20060101) G10K 9/00 (20060101) G10K 11/30 (20060101) Foreign Application Priority Data1983-08-03 DEAbstractThe utilization of the apparatus fundamentally lies in the medical sector. An essentially planar shock wave is generated with the assistance of a shock wave tube via a magnetic dynamic effect. This shock wave is focussed by an acoustic convergent lens, whereby the calculus to be pulverized is placed at the focal point (F) of the convergent lens. In order to couple the shock wave to the patient, the space that the shock wave traverses is filled with a coupling agent, for example water. The shock wave tube, the convergent lens and a fine adjustment for the displacement of the convergent lens relative to the shock wave tube are attached to a mounting stand so as to be pivotable in all directions. This disintegration facility comprising a shock wave tube has high operating reliability with respect to high voltage, requires low maintenance, and has only negligible imaging or focussing errors resulting from the shock wave producing membrane and the convergent lens.Other References
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