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:
Oct. 06, 1987
Filed:
Jul. 28, 1986
Gerd Wessels, Erlangen, DE;
Arnim Rohwedder, Erlangen, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
The present invention is directed to a method and apparatus for acoustic irradiation of a pathological change in a patient comprising a housing containing a shock wave generator positioned in a fluid-filled focusing chamber closed by a membrane characterized by a ring of elastic material being secured to the housing and surrounding the membrane and projecting beyond the membrane while in an idle position. The ring is provided with a channel system to allow evacuation of air from the space between the ring, membrane and the skin of the patient and also for introducing a coupling fluid into this space. The housing includes a channel for introducing additional fluid into the fluid-filled focusing chamber to cause the membrane to be expanded into the space and to engage the skin of the patient with a thin film of the coupling fluid disposed therebetween.