Welch Allyn A Guide To The Use Of Diagnostic Instruments In Eye And Ear Examinations - Quick Reference Guide - Manual (Page 11)

21 20
2.5 mm 3 mm 4 mm 5 mm
3 mm 5 mm 7 mm
2.5 mm 4 mm
The Otoscope
THE WELCH ALLYN MACROVIEW ™
otoscope features a patented optical system that provides the
practitioner with an increased field of view and magnification
to get a large, clear image of the tympanic membrane. Welch
Allyn’s traditional diagnostic otoscopes feature a wide-angle
magnified viewing lense.
Fiber optics and halogen light
produce optimum illumination
The Welch Allyn otoscope uses both fiber optic technology
and HPX
™ halogen illumination. Fiber optic light transmis-
sion provides a 360º ring of light without visual obstruction
or specular reflection. This distal light results in glare-free
viewing and an easier examination.
Focusing capability
(MacroView Otoscope Only)
The Welch Allyn MacroView otoscope has the capability to zoom
in or out on the area in view, resulting in a clearer image to aid
in diagnosis. A focusing wheel, conveniently located on each
side of the otoscope and the back eyepiece, is available to the
practitioner for adjusting the focal length. The adjustable focal
length can compensate for both the practitioner’s vision and
the length of the patient’s ear canal, thus creating the clearest
view of the tympanic membrane possible.
Pneumatic otoscopy capability
When examining tympanic membrane mobility, the
ability to perform pneumatic otoscopy is extremely
valuable. The Welch Allyn otoscope incorporates
a closed system and an airtight seal.
Specula attachment and removal
The Welch Allyn MacroView otoscope features a
unique specula attachment and removal design, the
TipGrip, which provides the practitioner with a secure attachment between
the specula and the otoscope during the exam. After the examination is
complete, the tip can be released from the otoscope by turning the TipGrip
counterclockwise or by simply twisting off the tip with one hand, as is the
technique with traditional otoscope models.
SPECULUM OPTIONS
The examiner can choose from three types of specula:
The first type of speculum is reusable and made of lightweight, durable
polypropylene. Reusable specula are available in four sizes: 2.5mm,
3mm, 4mm and 5mm.
The second type of speculum is the Universal KleenSpec ® , a disposable,
economical and convenient tip. KleenSpec ® tips are made of nontoxic
plastic and are available in two sizes: 2.75mm (pediatric) and
4.25mm (adult).
The third type of speculum exclusively available for traditional Welch
Allyn scopes is SofSpec
® , designed with a rigid plastic base and a special
soft material at the distal end. SofSpec ® fits snugly into the external
ear canal, providing the practitioner with the finest seal available for
pneumatic otoscopy. These specula are available in three sizes: 3mm, 5mm,
and 7mm and may be cleaned or sterilized by conventional methods.
In order to obtain the maximum field of view, the examiner should
always select the largest size speculum which fits comfortably into the
patient’s ear canal.
The following guidelines may be helpful:
REUSABLE
KLEENSPEC ®
SOFSPEC ®
Default Focus: Optimal setting for
most ear examinations.
Throat illuminator: Provides light in a
handy built-in penlight.
MacroView Otoscope
with Throat Illuminator
Patient Size
Adults 4 mm or 5 mm
Children 3 mm or 4 mm
Infants 2.5 mm or 3 mm
Adjustable Focus: Ability to zoom in
or out to fine tune view.
TipGrip: Ensures ear specula
is fastened securely and
easliy disposed
Insufflation Port: Creates closed
system for pneumatic otoscopy to
assess middle ear disorders. Apply
positive and negative air pressure
and view tympanic membrane.
Traditional
Otoscope