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The Hotchkiss Otoscope Instruction & Operation
Manual
The Hotchkiss Otoscope represents a radical departure in otoscope
design. To derive maximum effectiveness from it, the user must become familiar with
certain techniques. The following instructions will acquaint you with the
operational features of the Hotchkiss Otoscope and instruct you in its proper use.
Getting To Know Your Hotchkiss
Interchangeable Power Sources
Batteries
Recharging Unit
Installing the Hotchkiss Xenon
Lamp/Reflector
Cleaning the Lens
Visualization
Proper two-finger holding
of the Hotchkiss Otoscope
Instrumentation
Pneumoscopy
Hotchkiss Accessories
Autoclaving, sterilizing and
disinfecting Specula
Personalize Your Hotchkiss
Additional uses of the Hotchkiss
Otoscope
Warranty
Getting To Know Your
Hotchkiss
For the best understanding of these instructions, familiarize yourself
with the various parts of the Otoscope:
Figure 1: Right view of the Hotchkiss Figure 2:
Left view of the Hotchkiss
Interchangeable Power
Sources
All Hotchkiss power sources are completely interchangeable. The
optical head is universal so the user may choose the power source that best meets their
needs, or add another type at anytime.
Around-the-Neck:
1. To connect the around-the-neck power source to the optical head, slide the
narrow end of the swivel base into the tracks of the optical head.
2. Push firmly until the swivel base clicks into place.
Clip-On:
1. Insert the clip-on power source in the tracks of the optical head, narrow end
first.
2. Push firmly until unit clicks into place.
Transformer:
1. Plug transformer into 110v. wall outlet (220v. model is also available).
2. Plug two-pronged adapter cord into the transformer.
3. Slide the narrow end of swivel base onto the tracks of the optical head.
4. Push firmly until the swivel base clicks into place.
Batteries
The Hotchkiss Otoscope uses two "AA" size alkaline or
rechargeable nickel cadmium batteries. Important: Proper battery
alignment is clearly indicated in each power source by the plus (+) and minus (-) sign.
Found on the battery endcaps in the around-the-neck (see figure 4), and on the
inside contact of the trap door in the clip-on (see figure 3)
Figure 3: Clip-On alignment
Figure 4: Around-the-Neck alignment
Recharging Unit
The Clip-On power source or the Around-the-Neck power source may be
recharged on the Hotchkiss Recharging Unit.
Replace the alkaline batteries with nickel cadmium cells (supplied with
the Recharging Unit.
Plug the Recharging Unit into a 110v. wall outlet. (220v model is also
available).
To recharge, disconnect the power source from the optical head.
Turning the power source contact side down, slide it onto the recharger in the same
direction as you would place it onto the optical head. When properly in place the
indicator light will go on.
If the batteries are misaligned the indicator light will not go on.
(See figures 3 and 4 above).
Installing
the Hotchkiss Xenon Lamp/Reflector
Pull back the cover slide on top of the optical head (step 1 in
illustration).
With the pneumoscopy bellows tip or similar pointed object (screw
driver, ball point pen or Q-tip) push up through the carrier hole in the bottom of the
optical head to lift up the lens-lamp carrier (step 2 in the illustration).
Unscrew old lamp (counterclockwise).
Screw new lamp in place snugly (clockwise), do not overtighten.
Optical adjustments can be made by backing the Xenon Lamp/Reflector out
of the lens-lamp carrier. First observe the optics with the lamp firmly in place, if
adjustment seems necessary back the lamp out of the lens-lamp carrier a quarter to a half
turn.
When returning the lens-lamp carrier to the optical head, have the
otoscope turned on. The Reflector on the lamp should not touch the battery contact
in the front; nor should the Xenon lamp stem touch the body of the optical head in the
back. If either touch the Xenon Lamp/Reflector will not light when in place.
To correct simply readjust by screwing the lamp in or out.
Figure 5
Cleaning the Lens
Keep the optically coated lens clean at all times to avoid blurring of
the image and to reduce internal reflections.
Remove lens-lamp carrier as in figure 5 above.
Clean the lens regularly with a Q-tip or lens cleaning tissue moistened
with lens cleaning solution or alcohol. Note: Do not clean with
acetone or other similar solvents.
Visualization
For coaxial illumination, always look through the round viewing port.
Never view through the instrumentation opening. This results in parallax
error and lack of magnification. For best visualization, keep eye at least one to
two inches from the viewing port.
Proper
two-finger holding of the Hotchkiss Otoscope
 | To hold the Otoscope, place the thumb and index finger in the recessed
areas near the specula-holding hub. This leaves the middle finger of the same hand
free to straighten the ear canal.
|
Figure 6: Right-hand use
Figure 7: Left-hand use
Be sure to use this two-finger grasp even when the clip-on power source is
used. Simply let the clip-on power source rest on the proximal phalnax of the index
finger to obtain the proper balance.
| Rest the fourth an fifth fingers against the patient's head. Thus if the patient
moves, the otoscope and hand moves with the patient. |
| To activate the switch built into the side of the instrument, simply exert a slight
amount of pressure with the finger and thumb holding the Otoscope. On relaxing this
pressure, the switch will automatically return to "off" (prolonging life of
battery and lamp). |
| For operational procedures, instrumentation, cerumen management, foreign body extraction
use the lock-on switch. |
Instrumentation
The Hotchkiss Otoscope is designed to give 360 degree, or complete,
instrumentation access to any visualized area.
When the straight edge of the lens becomes a limiting factor, rotate the
instrument, moving it from a horizontal position where the index finger is pointed
horizontally (figure 8) to a vertical position with the index finger perpendicular (figure
9).
Figure 8
Figure 9
Pneumoscopy
Place the switch in the lock-on position.
Place pneumoscopy bellows air tip into the pneumoscopy port on
non-switch side of optical head.
Hold the Otoscope with the left hand (see figure 10 below).
Be sure to cover the instrumentation opening by placing the thumb across
the opening. This forms the airtight forward chamber.
With your right hand pump bellows. For most effective evaluation
of TM movement, use short, rapid pumps.
Always be sure to use a specula tip large enough to produce the proper
air seal between specula flange and canal wall.
Figure 10
Hotchkiss Accessories
5x Magnification Unit and /or Corrective Lens:
Insert either unit in the viewing port and push until the unit is firmly
seated. The 5x Magnification Unit should be rotated in the viewing port until it
locks into place.
To focus the 5x Magnification Unit, turn the knurled outer focusing ring
at the back end of the unit.
To use the 5x Magnification Unit in conjunction with the Corrective
Lens: a) Unscrew the Corrective Lens from it's
retaining tube. b) Then screw the Corrective Lens into the threads cut into the back
end of the knurled focusing ring on the 5x Magnification Unit. c) Save the
Corrective Lens retainer tube for future use.
When using the optical accessories it is essential that the lens of the
otoscope be as clean as possible. Fingerprints or dust on the lens will be magnified
by the unit. See Cleaning the Lens above (figure 5).
Hotchkiss Specula
Autoclavable and Disposable:
The autoclavable or reusable specula are black and come in 6 sizes, ranging from 2.5mm
to 8mm. They are designed for instrumentation and pneumatic procedures. They
may be sterilized by autoclaving or soaking.
Cleaning: Autoclavable Specula may be cleaned in a warm water-mild
detergent solution.
Disinfecting: Autoclavable Specula may be disinfected using the following
methods:
-Soaking in 70% isopropyl alcohol
-Soaking in a 14 day glutaraldehyde solution following manufacturer's instruction for
exposure time and temperature for intermediate disinfecting.
Sterilization: Autoclavable Specula may be sterilized using the following
methods:
-May be sterilized using any "standard" autoclave cycle when temperature does
not exceed 280°F (138°C). Do not flash autoclave.
-May be gas sterilized using ETO concentrate of 10-100%. Do not exceed
4 hour exposure time or 132°F (55°C). Aerate 12 - 16 hours at 120°F (49°C).
-Soak in a 14 day glutaraldehyde solution following manufacturer's instruction for
exposure and time and temperature.
The disposable specula are also black however each one is clearly marked with the word
"disposable". The disposable specula come in 2 sizes - pediatric and adult
(also clearly marked on each specula). Do not sterilize or autoclave disposable
specula. Designed to be thrown away after one use, disposable specula will not allow
cross contamination.
Personalize Your
Hotchkiss
Have your name engraved onto your Hotchkiss Otoscope. We would be happy to
personalize your Hotchkiss Otoscope. This helps ensure against your Otoscope ending
up in someone else's hands.
Additional
uses of the Hotchkiss Otoscope
Examination of the nasal cavity:
The Hotchkiss Otoscope is ideally suited for examining the nasal cavity.
Choose the specula of appropriate size.
Ask patient to breath through the mouth or to hold breath temporarily to
avoid fogging up the lens. Note: As an additional measure to avoid fogging, a
commercial antifogging agent may be used on the lens.
Examination of the pharynx
The Hotchkiss Otoscope is ideally suited for examining the pharygeal
area. The Xenon light beam is bright and direct, allowing for more accurate
examination and better evaluation of color.
Warranty
Proudly made in the United States of America, the Hotchkiss Otoscope
is unconditionally guaranteed for a period of one year against any defect in materials or
workmanship.
Catalog and Pricing on the Hotchkiss Otoscope:
Order Your Hotchkiss Otoscope:
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