07399275 is referenced by 9 patents and cites 16 patents.

An otoscope permitting examination of a patient's ear is defined by an instrument head including a proximal end and a distal insertion portion that is insertable into the ear. The otoscope includes an imaging lens train disposed within the instrument head, wherein each of the imaging lens train, an eyepiece and a distal opening of said insertion portion are aligned along an optical axis. The otoscope further includes a focusing mechanism for selectively moving at least one of the imaging lens train and the optics contained within the eyepiece relative to one another along the optical axis. The imaging lens train and the optics in the eyepiece define an optical system such that an entrance pupil is substantially located in the distal insertion portion of the instrument head, thereby enabling the entire tympanic membrane to be viewed at once by the user.

Title
Otoscope
Application Number
10/897590
Publication Number
7399275 (B2)
Application Date
July 23, 2004
Publication Date
July 15, 2008
Inventor
Raymond A Lia
Auburn
NY, US
Elizabeth P Staples
Cayuga
NY, US
Cynthia A Kuiper
Syracuse
NY, US
Eric M Andreassen
Liverpool
NY, US
Steven R Slawson
Camillus
NY, US
Ervin Goldfain
Syracuse
NY, US
Assignee
Welch Allyn
NY, US
IPC
A61B 1/267
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