公开(公告)号：US20210338072A1

公开(公告)日：2021-11-04

申请号：US17374211

申请日：2021-07-13

Applicant: Welch Allyn, Inc.

Inventor： Eric M. Andreassen ,  David M. Fallat ,  Ervub Goldfain ,  John R. Strom ,  John T. Delaney ,  Howard Haines ,  Corinn C. Fahrenkrug ,  Cynthia A. Kuiper

IPC: A61B1/227 ,  A61B1/00

Abstract: An otoscope includes an instrument head, a tip element and an optical system. The instrument head has a distal insertion portion for insertion into an ear of a human or veterinary subject. The distal insertion portion has a distal opening. The tip element is releasably attached to the distal insertion portion. The tip element has a distal opening. The optical system is contained within the instrument head. The optical system includes a plurality of optical components. The optical system further comprises a viewing component for viewing of an image of a target of interest aligned along an optical axis disposed within said distal opening. The optical system is configured to provide a field of having a diameter equaling at least 7 mm at a distance of at least 15 mm from a distal opening of said attached tip element. The optical system is further configured to simultaneously provide a distance range of optimal focus having a range of at least 8 mm. The distance range of optimal focus includes a location at a working distance equal to about 30 mm.