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:
Jul. 07, 1992
Filed:
Dec. 06, 1990
Robert W King, Lexington, MA (US);
John W Duffy, Sandown, NH (US);
James N Chen, Chelmsford, MA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
This invention provides an ultrasonic transducer probe for medical scanning and a lens assembly for use therein. The probe has a housing in which an ultrasonic transducer array is mounted, there being an opening in the housing adjacent the transducer array. A first lens subassembly is mounted to the transducer and moves therewith if the transducer is rotated. A second lens subassembly is mounted to the housing to fill the opening therein, and includes, for example, a thin plastic film covering the opening and bonded to the housing to seal the opening and a film backing lens or layer. The first lens subassembly is preferably a compound lens. The lens subassemblies are formed of materials having relative acoustic properties, and having mating surfaces which are shaped, to selectively focus ultrasonic signals from the transducers.