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:
Apr. 04, 1995
Filed:
Jul. 26, 1991
William H Pilling, North Wales, PA (US);
Pilling Co., Fort Washington, PA (US);
Abstract
A laryngoscope, for use with a binocular operating microscope, has a tube with a flared distal end and a narrow intermediate portion allowing manipulation of the tube. The proximal end of the tube is flared horizontally to an extent such that the centerlines of both objective lenses of the microscope enter the proximal opening of the tube even when the microscope is moved to the left and right to view portions of the larynx spaced laterally from the central axis of the tube. When the microscope is moved laterally, the centerline of one of the lenses intersects the interior wall of the tube, which is dark. Therefore the annoying effect of seeing objects external to the laryngoscope tube with one eye is avoided.