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. 15, 1987
Filed:
Sep. 29, 1986
Alfred G Brisson, Kildeer, IL (US);
Christopher Nowacki, Arlington Heights, IL (US);
Trutek Research, Inc., Lake Zurich, IL (US);
Abstract
Apparatus is provided for the extracorporeal disintegration of kidney stones and the like. An ellipsoidal reflector has a spark gap positioned at one focus point of the ellipsoid, and the reflector is positioned so that the kidney stone being disintegrated is at the second focus point. The reflector is filled with water so that when a spark is generated through the spark gap, a shock wave is generated through which is focused through the water and through body tissues on the kidney stone. Both an electrocardiogram apparatus and an ultrasound pick-up apparatus are coupled to a spark triggering circuit controlling the pulse generator so that a spark or pulse can be generated only during ventricular contraction, thereby avoiding any possibility of inducing fibrillation of the heart.