The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 26, 1988
Filed:
Jun. 05, 1986
Applicant:
Inventors:
Assignee:
Richard Wolf GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128328 ; 128 / ;
Abstract
An instrument for ultrasonics lithotripsy comprises a probe which is applied to the stone which is to be disintegrated, which may be placed in oscillation by means of a piezo-electric sound transducer which is assembled from ceramic discs. The transducer is energized into oscillation by an electrical generator and the transducer oscillations are transmitted to the probe via a distal transducer closure. A particularly effective operation of the instrument is the result if the transducer is energized only intermittently by pulsed operation of the generator, no specific natural resonance frequencies of the system being intended to occur within the preset range of operating frequency.