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:
Sep. 09, 1986
Filed:
May. 08, 1984
Robert A Makofski, Catonsville, MD (US);
Joe T Massey, Bethesda, MD (US);
F Fausten Mark, Silver Spring, MD (US);
Francis B Weiskopf, Jr, Catonsville, MD (US);
William H Guier, Pasadena, MD (US);
Patrick C Walsh, Hunt Valley, MD (US);
Fray F Marshall, Ruxton, MD (US);
The Johns Hopkins University, Baltimore, MD (US);
Abstract
Apparatus and method for noninvasive fragmentation of body concretions. The apparatus has an integral unit including an ultrasonic locating transducer and positioning structure. The concretion is localized with ultrasonics and then shattered upon generation of a shockwave, using a relfector with first and second foci. A spark gap at the first focus generates the shockwave which propagates to the second focus coincident with the concretion. The ultrasonic tranducer is positioned so that an axis of the transducer is coincident with a straight line passing through the first and second foci.