ViewLight KOWA SL-19 User manual
INSTRUCTION MANUAL
Hand-Held Slit Lamp
KOWA
EU
KOWA SL-19
I
Congratulations on your purchase of the KOWA SL-19 (Basic Model).
This manual provides a description of the operating procedures and important precautions to be observed
during its use.
Please read this manual carefully to ensure that the instrument can perform to its full capabilities and work
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Safety Precautions
This manual describes important precautions to be observed when you use the instrument to ensure that the
instrument is used safely without causing any damage to the human body or property of the purchaser and
other persons.
The following designations and pictorial symbols should be fully comprehended before reading the manual.
Meanings of Designations
Warning Improper operation may result in serious injury*1 or death.
Caution Improper operation may result in bodily injury*2 or property damage*3.
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causes a subsequent complication or requires hospitalization or long-term outpatient treatment.
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outpatient treatment.
*3 Damage to property means extensive damage to a house and/or household goods as well as a domestic animal and pet.
Meanings of Symbols
Graphical indication of any warning and caution.
What is warned is explicitly and pictorially indicated by a picture or its associated
message on or near a pictorial symbol.
Graphical indication of prohibited operation (prohibitive item).
What is prohibited is explicitly and pictorially indicated by a picture or its associated
message on or near a pictorial symbol.
Graphical indication of any mandatory action (obligatory item).
What must always be done is explicitly and pictorially indicated by a picture or its
associated message on or near a pictorial symbol.
Disclaimer
KOWA is not responsible for:
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any accident caused by a user's intentional or unintentional error.
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• Any damage resulting from disregarding what is described in this manual.
• Any damage resulting from malfunctioning caused by a combination of connected devices.
Introduction
II
Warning
Prohibitory
Do not place a container or cup containing liquid near the instrument. Spilled liquid
entering into the instrument may cause electrical shock. If liquid should be spilled into the
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other than a KOWA designated repair facility will void the warranty.
Obligatory
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EXWWRQLVWXUQHGRQWXUQRႇWKHVOLWEXWWRQLPPHGLDWHO\&RQWLQXRXVXVHPD\UHVXOWLQ¿UH
or instrument damage. Contact KOWA or authorized Kowa dealer for inspection.
Use the designated battery box.
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5HPRYHWKHEDWWHULHVZKHQWKH\DUHH[KDXVWHGRUZKHQWKHXQLWZLOOQRWEHXVHGIRUD
long period of time (more than three months). Leaving the battery in the unit for a long
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The Ni-MH battery and its charger are not medical devices.
Please contact the battery/charger manufacturer for trouble with the nickel metal hydride
battery or its charger.
Caution
Prohibitory
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GHWHULRUDWLRQ,IWKHWHUPLQDOVDUHVRLOHGZLSHZLWKDGU\VRIWFORWKFRQWDLQLQJ
Do not place your hands between the revolving arm and the coupled arm. It may lead to
injury if the hand is caught when the arms move.
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injury when
adjusting interpupillary distance.
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surface.
The device may fall and could cause injury.
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8VLQJWKHGHYLFHLQVXFKHQYLURQPHQWVFRXOGOHDGWR¿UHRUHOHFWULFVKRFN
Attach the battery box properly. A dropped battery box may cause damage or injury.
Obligatory
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injury.
Do not use this device in a low-temperature environment below 10°C or in a high-
temperature environment above 35°C.
It may cause damage to the device.
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to prevent them from loosening and install them correctly. Loose or detached parts may
cause injury.
III
Components and Supplies
Main unit and standard items
Main unit (including battery box): 1
Dust cover: 1 Other
Instruction Manual: 1
Optional items
Forehead rest
0RGHO6/+5
IV
Meanings of Symbols
Main unit
V
MeaningsofSymbols
Symbol for “Follow instruction man-
ual for use” Symbol for “To Recycle”
Symbolfor“DATEOFMANUFACTURE” Symbol for “Medical Decive”
Symbol for “MANUFACTURER” Symbol for “Serial number”
Symbol for “Authorised Representa-
tive in the European Community” Symbol for “Type B applied part”
Symbol for “Importer” Indicates the size of the battery and
the polarity when it is used.
For EU Market
Forehead rest
(optional item)
2022-02
11513800001
SL-HR150
This symbol is used only for member countries of the EU. The products with this
symbol must be handled in accordance with the WEEE Directive and domestic laws of
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resources.
VI
1. Operating environment
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Strictly observe the following environmental conditions.
Operational Transport and storage
Environmental temperature 10 to 35℃-10 to +55℃
5HODWLYHKXPLGLW\ 30 to 90% 10 to 95%
Atmospheric pressure WRK3D WRK3D
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2. Precautions for maintenance and repair
1) Disinfect all parts accessible by the patient with alcohol.
2) Handle the instrument carefully and do not subject it to strong impact. Do not operate the instrument after it has been
dropped or has been subjected to any other kind of strong impact.
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・Severe damage or deterioration of the exterior
・Deterioration or leaking of batteries
4) Never disassemble or adjust this instrument by yourself as it involves precision parts which require special tools.
5) KOWA is not liable for malfunction and/or damages resulting from maintenance and/or repairs performed by a third
party other than an agent authorized by KOWA.
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7) Always cover this instrument with the dust cover when not in use.
8) Prevent running out of batteries by having new batteries prepared.
3. Disposal precautions
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sure to contact a licensed industrial waste disposal contractor in accordance with local government ordinances and
regulations if applicable.
4. Notes on Batteries and Rechargeable Batteries
1) This device uses three AA batteries. Please follow the guidelines below.
・)RUGU\FHOOEDWWHULHVSULPDU\EDWWHULHVXVH$ONDOLQHEDWWHULHV
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・'RQRWXVHQHZDQGROGEDWWHULHVWRJHWKHURUEDWWHULHVRIGLႇHUHQWEUDQGVRUW\SHVWRJHWKHU
・Make sure that batteries are inserted in the battery box in correct polarity positions. Batteries inserted in the wrong
direction may lead to failure.
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leakage.
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and explode.
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.
Operating Precautions
Warning
Obligatory
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extended periods (three months or longer).
Leaving the batteries inside the instrument for extended periods may cause leakage of battery
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:KHQEDWWHULHVKDYHUXQRXWUHPRYHDOOWKHEDWWHULHVLQVLGHDQGUHSODFHZLWKQHZRQHV
The Ni-MH battery and its charger are not medical devices.
Please contact the battery/charger manufacturer for problems with the nickel metal hydride
battery and its charger.
VII
Operational Considerations for a Hospital Grade Electrical
Instrument (safety and accident prevention)
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2. The following items shall be considered when installing the instrument.
1) Install at a location away from water or accidental splashing.
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4) The instrument must not be installed at locations where chemicals are stored or gasses are generated.
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3. The following items shall be considered before using the instrument.
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2) Use of other instruments and appliances on the same power outlet is liable to cause errors and incorrect
output resulting in incorrect diagnosis or hazards.
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4. The following items shall be considered when using the instrument.
1) Make sure to minimize the time required for diagnosis.
2) Always ensure that the instrument and patient are in good condition.
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of the instrument while assuring the patient’s safety.
4) Do not allow the patient to touch any part of the instrument except for the forehead rest.
5. The following items shall be considered after using the instrument.
1) The following shall be considered regarding storage location.
(ⅰ) Store at a location away from water or accidental splashing.
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(ⅳ) The instrument must not be stored at locations where chemicals are stored or gasses are generated.
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3) The instrument must be cleaned after use so that there will be no problems when using it again.
6. In case of a problem or malfunction, do not attempt to repair the instrument by yourself. Appropriately
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8. Maintenance
1) Periodically check the instrument and its components for any abnormality.
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normal condition and operates safely.
9. Be careful of the possibility that incorrect operation may be caused by strong electromagnetic waves.
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The purpose of this standard is to keep safety against the dangerous obstacle in typical medical facilities.
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relocate this instrument and other apparatus or extend the distance between those instruments.
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Serious incident reporting
Any serious incident that has occurred in relation to the device should be reported to the manufacturer and the
competent authority of the Member State in which the user and/or patient is established.
VIII
Light intensity dial display 12345
Light intensity ratio 0.01 0.03 0.18 0.55 1.00
Background illumination stage 123
Light intensity ratio 0.14 0.50 1.00
Blue illumination stage 123
Light intensity ratio 0.21 0.50 1.00
Light Hazard
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for a thorough understanding.
CAUTION −The light emitted from this instrument is potentially hazardous. The longer the duration of
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maximum output will exceed the safety guideline after 475 seconds for all light sources.
NOTE 1 The exposure from all light sources is cumulative and additive.
NOTE 2 ,IWKHLQWHQVLW\RIDQ\RIWKHOLJKWVRXUFHVLVUHGXFHGWRRIWKHPD[LPXPLQWHQVLW\WKHH[SRVXUH
time for that light sources to reach the exposure guideline is doubled. This linear relationship can be used to
determine the time to reach the exposure guideline for the combination of light sources at various intensity
settings.
NOTE3 The weighted retinal radiant exposure guideline is 10 J/cm2.
Blue illumination light(source3)
Slit light(source1) Background illumination light(source2)
IX
This instrument is a medical electrical instrument. Medical electrical instruments require special attention to
electromagnetic compatibility (EMC).
The following section describes the conformity to EMC and precautions for this instrument. When installing or
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○The environment for which this instrument is suitable: Home healthcare facility environment.
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instrument.
Performance Switching ON/OFF the lamp
Electromagnetic Compatibility
Warning
What can be anticipated if the performance is lost or degraded due to electromagnetic disturbances:
The lamp is not turned on. Use of this instrument adjacent to or stacked with other instrument may
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should be observed to verify that they are operating normally.
Warning
This device has been tested for electromagnetic compatibility (EMC) in conjunction with
the following items and peripheral devices. Use of non-designated items may increase the
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improper operation. Do not attach and use substances that are not designated.
・)RUHKHDGUHVW6/+5
・KOWA SL-19 charger (SL-CB191)*
・KOWA SL-19 power pack (SL-PP191)*
・$&DGDSWRUDGDSWHGIURP,(&*&)6PDQXIDFWXUHGE\*8&)
・USB cable (not more than 1.5m) (Elecom U2C-AC15NBK)
Warning
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DQWHQQDVVKRXOGEHXVHGQRFORVHUWKDQFPLQFKHVWRDQ\SDUWRIWKLVLQVWUXPHQWLQFOXGLQJ
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ElectromagneticCompatibility
<Main body and Forehead rest>
Compliance for each emissions
Emissions Test Compliance
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&,635 Group 1 Class B
Conductive emission
&,635 Not applicable
Harmonic distortion
,(& Not applicable
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,(& Not applicable
Compliance for each immunity
Immunity Test Immunity Test Levels
Electrostatic Discharge
,(&
±8 kV contact
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5DGLDWHG5)(0¿HOGV
,(&
10 V/m
80 MHz – 2.7 GHz
80 % AM at 1 kHz
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,(&
30 A/m
+]RU+]
Electrical fast transients/bursts
,(& Not applicable
Surges
,(& Not applicable
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,(& Not applicable
Voltage dips
,(& Not applicable
Voltage interruptions
,(& Not applicable
Electrical transient conduction along supply lines
,62 Not applicable
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equipment
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ElectromagneticCompatibility
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Test
Frequency
(MHz)
Band
(MHz) Service Modulation
Maximum
Power
(W)
Distance
(m)
Immunity
Test Level
(V/m)
385 380 – 390 7(75$
Pulse
modulation
18Hz
1.8 0.3 27
450 430 – 470 *056
)56
FM
±5 kHz
deviation
1 kHz sine
2 0.3 28
710
704 – 787 /7(%DQG
Pulse
modulation
217 Hz
0.2 0.3 9745
780
810
±
*60
7(75$
L'(1
&'0$
LTE Band 5
Pulse
modulation
18 Hz
2 0.3 28
870
930
1720
1700 – 1990
GSM 1800;
CDMA 1900;
GSM 1900;
DECT;
/7(%DQG
UMTS
Pulse
modulation
217 Hz
2 0.3 28
1845
1790
2450 2400 – 2570
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:/$1
EJQ
5),'
LTE Band 7
Pulse
modulation
217 Hz
2 0.3 28
5240
5100 – 5800 WLAN 802.11
a/n
Pulse
modulation
217 Hz
0.2 0.3 9
5500
5785
XII
Contents
Introduction ................................................................................................. I
Components and Supplies.............................................................III
Meanings of Symbols ...............................................................................IV
Operating Precautions .............................................................................. VI
Operational Considerations for a Hospital Grade Electrical Instrument
(safety and accident prevention)..............................................................VII
Light Hazard ...........................................................................................VIII
Electromagnetic Compatibility ..................................................................IX
Contents ..................................................................................................XII
1 Instrument Description............................................................................... 1
1.1 Intended Use .............................................................................................................1
1.2 Overview....................................................................................................................1
1.3 Operator.....................................................................................................................1
1.4 Features.....................................................................................................................1
1.5 Name and Function of Each Part ..............................................................................2
2 Preparation ................................................................................................ 4
2.1 Installing batteries in the main unit ............................................................................4
2.2 Adjusting Interpupillary Distance and Diopter............................................................5
3 How to Use ................................................................................................
3.1 Basic instruction.........................................................................................................
3.2 How to Operate Other Functions...............................................................................
3.3 Optional items............................................................................................................8
4 Maintenance and Inspection ........................................................... 9
5HJXODU0DLQWHQDQFH ................................................................................................9
4.2 Daily Inspection .........................................................................................................9
5HSODFLQJ%DWWHULHV .......................................................................................................... 10
4.4 Cleaning .................................................................................................................. 11
5 Troubleshooting ....................................................................................... 12
6SHFL¿FDWLRQV........................................................................................... 13
1
1.1 Intended Use
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structural properties of the anterior eye segment.
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1.2 Overview
The KOWA SL-19 (basic model) is a hand-held slit lamp powered by three AA batteries.
1.3 Operator
Persons with specialized knowledge of ophthalmic care and who received introductory education of slit lamp
observation are required to operate this instrument.
1.4 Features
●Slit lamp button that allows the operator to turn on the slit lamp easily with simple action
●White LED used as the light source
●Light intensity dial that can freely change the brightness of the slit illumination
●Equipped with background illumination separately used from the slit light
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●
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●Easy-to-grip shape
●Lighter than conventional models
●Power-saving LED for longer operating time
●Indicator blinks orange when the battery level is low
●Can also be used as an indirect ophthalmoscope light source
1 Instrument Description
2
1InstrumentDescription
1.5 Name and Function of Each Part
②
①
⑧
④
③
⑮
⑬
⑭
⑯
⑪
⑥
⑨
⑩
⑰
⑤
⑫
⑱
⑲
⑳
㉑
㉒
⑦
3
1InstrumentDescription
Name Function and performance
①Slit dial 6HOHFWVOLWZLGWKDQGVSRW7KUHHVOLWZLGWKVDUHDYDLODEOHPPPPDQGPP
②Spot dial
Select the light diameter of the spot and determine the length of the slit light. Three spot
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from 1.5mm to 12mm continuously.
③Magnifying power
select lever GLႇHUHQWPDJQL¿FDWLRQV[DQG[DUHVHOHFWDEOHE\VKLIWLQJWKHOHYHUOHIWDQGULJKW
④Eyepiece Ocular lenses are included in the eyepiece. The user observes patient eye through the
ocular lens.
⑤Eye cup Attached to the eyepiece and can be used as guide to adjust the distance of the eye from
the ocular lens.
⑥Dioptric correction
scale Continuously adjust the dioptric power of the eyepiece.
⑦Prism box 5RWDWHOHIWDQGULJKWWRDGMXVWLQWHUSXSLOODU\GLVWDQFH
⑧Illumination angle
scale Indicates the swing angle of the illumination light.
⑨Slit lamp button 3UHVVWRWXUQ21WKHOLJKWDQGUHOHDVHWRWXUQ2))
⑩Projection prism Part of prism where the illumination light passes through.
⑪Objective lens $W[PDJQLILFDWLRQWKHREMHFWLYHOHQVVWD\VLQVLGHWKHPLFURVFRSHXQLWDQGDW[
PDJQL¿FDWLRQWKHREMHFWLYHOHQVSRSVRXWIRUZDUG
⑫Upper cover 5HPRYHWKHXSSHUFRYHUZKHQLQVWDOOLQJWKHIRUHKHDGUHVW
⑬Back light button :KHQSUHVVHGWKHEDFNJURXQGLOOXPLQDWLRQOLJKWWXUQVRQ7KHOLJKWLQWHQVLW\FDQEH
switched between three levels.
⑭Main unit indicator Illuminated in green when the unit is turned on. Flashes orange when the battery level is
low.
⑮Blue light button Press to turn on the blue light for fluorescence observation. The light intensity can be
switched between three levels.
⑯Light intensity dial The brightness of the illumination light can be continuously adjusted. Turn to the right to
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⑰Battery box Can contain batteries to be attached to insert the battery into the main unit.
⑱5HYROYLQJDUP ―
⑲Coupled arm Supporting connection between the grip unit and the illumination unit.
⑳Grip ―
㉑Illumination unit ―
㉒Microscope unit ―
4
2 Preparation
2.1 Installing batteries in the main unit
When using alkaline dry batteries or Ni-MH rechargeable batteries
(1)
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main unit.
(2) Firmly insert batteries in correct polarity positions as written on the
battery box.
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Shape AA
Type Alkaline dry batteries or Ni-MH rechargeable batteries
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Insert the battery box until the tab makes a click sound.
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Caution
Prohibitory
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'RQRWPL[EDWWHULHVZLWKGLႇHUHQWUHVLGXDOYROXPHV
Caution
Obligatory
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IDOOUHVXOWLQJLQGDPDJHRULQMXU\
5
2Preparation
2.2 Adjusting Interpupillary Distance and Diopter
(1) Adjusting interpupillary distance
$GMXVWWKHLQWHUSXSLOODU\GLVWDQFHE\URWDWLQJWKHSULVPER[OHIWRUULJKWWRREWDLQDQDSSURSULDWH¿HOGRI
view through the eyepieces.
(2) Adjustment of the diopter
Make adjustment for each eye according to the following procedure.
・
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・
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toward the “–“ side until the reticle is clearly visible.
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Caution
Prohibitory
Do not adjust the interpupillary distance with
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Left Right
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6
3 How to Use
3.1 Basic instruction
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(2) Place the thumb of the other hand on the side of the microscope unit
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(3)
Stabilize slit width indication by adjusting the distance between the
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RSHQLQJLVEHWZHHQWKHWKXPEDQGWKHRWKHU¿QJHUVZKHQSXWRQ
the patient's forehead.
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possible to observe the patient eye.
(4) Press the slit lamp button and irradiate the light for various observations of the eye.
3.2 How to Operate Other Functions
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Turn the magnifying power select lever to the left as indicated by the
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Turn it to the right to select a magnifying power of 10x.
●Changing slit-width
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Turn the slit dial and set at the click stops.
●Select the slit length and spot diameter
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PPDQGijPP
The slit length can also be varied continuously from 1.5mm to 12 mm.
Turn the spot dial and set it at the click stops or adjust it to the
appropriate slit length.
List of slit dial and spot dial settings
No. 12345
Illumination
irradiated
Slit dial 0.1,0.2,0.8 0.1,0.2,0.8 0.1,0.2,0.8 〇〇〇
Spot dial 12 ij,ij ļ 12 ij,ij ļ
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×10
×16
0.8
0.8
IMPORTANT
1.5↔12
1.5↔12
1.5↔12
1.5↔12
1.5↔12
1.5↔12
Table of contents
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