User`s Manual Video Otoscope
Contents
1. Note Normally the white dot will be on the opposite side of the fiber optic cable 3 Tighten the set screw on the optical coupler PUB 112 Rev B doc 12 User s Manual Video Otoscope AMD 300S The white dot on the camera head marks the position of up with respect to how the image is oriented on the screen Simulated position of the white dot on camera head In this example the white dot on camera head is to the left instead of on top It is natural for the fiber optic cable to hang down while holding the ear scope assembly but this is not the true frame of reference for the image Figure 9 Relationship between image up and the white dot 2 1 6 Capture Images Into a Case At this point a series of otoscope images can be captured named reviewed and saved into a case Refer to Section 3 for clinical tips on handling patients and obtaining good results The procedure is as follows 1 Attach a clean speculum of the proper size the diameter as measured at the tip 2 5 mm for children 4 0 mm for adults Note the speculum attaches to the ear scope by screwing it on a quarter turn 2 Ensure you have a live image on screen by moving something in front of the ear scope such as your fingers If the image appears frozen or the image border is flashing red press the Live button Note in the next steps to capture the video input as a still image you must signal the computer to capture the image There are thr2. 2 2 Checking and Replacing the Fuses There are two fuses in the fuse drawer These fuses are identical Use Welch Allyn part number VA303 or a commercially available fuse with the following specs 2 0 amperes 250 volts 5 millimeter by 20 millimeter Fast Blo Once removed the fuse element is visible inside the glass barrel of the fuse If the fuse is good the element will be visible as a continuous filament If the fuse is blown the element will be melted and either will be completely gone or will have a distinct gap in the filament Replace a fuse as follows 1 Turn off the video otoscope and disconnect the power cord from the back of the Platform Box 2 There are two retaining tabs one on each side that hold the fuse drawer in place Using a small screw driver press one retaining tab in and gently pry that side out a small amount see Figure 14 Repeat the process on the other side of the fuse drawer Continue back and forth in this fashion until the fuse drawer is out far enough to pull with your fingers Press tab in gently pry towards yourself Intact filament visible in glass means fuse is OK Retaining Tab Figure 14 Removing the fuse drawer 3 Hold the fuse drawer up against a suitable background and inspect the fuse elements If the fuse element is visible the entire length of the glass and there are no apparent breaks or burn spots the fuse 1s probably OK 4 If an element appears to have blown
3. Documents This document assumes you have read the introductory hardware and software manuals included in this binder The original manuals provided with the equipment were included in a set of materials delivered with the AFHCAN Cart Those manuals can be used to supplement the information provided in this document Be aware however that items installed on an AFHCAN Cart may have been modified slightly so the features as described in the original product manuals may not apply For More Information This document describes the equipment to a level of detail that will meet most user s needs in the context of clinical use of the AFHCAN Cart For more information contact AFHCAN Customer Support AFHCAN Customer Support Phone 888 449 4435 Fax 907 729 2269 email customersupport afhcan org You can also view additional information at the manufacturer s website www welchallyn com medical www amdtelemedicine com PUB 112 Rev B doc V User s Manual Video Otoscope AMD 300S PUB 112 Rev B doc vi Section 1 Introduction 1 1 Introduction to the Video Otoscope This manual describes the principal features and operation of the AMD 300S video otoscope as installed on an AFHCAN Cart 1 1 1 Functional Description The video otoscope combines an otoscope with a digital imaging system to produce high quality video images that can be displayed on a monitor The video output from the video otoscope is brought into the computer The
4. Optic Illumination Port When lamp is on light shines through ventilation grill S Video Connections Platform Box Serial Number User s Manual Video Otoscope AMD 300S Speculum Ear Scope Assembly To Camera Connector Port Camera Cable To Fiber Optic Illumination Port Teflon Sheath woven Fiber Optic Bundle To Fiber Optic Illumination Port Fiber Optic Bundle Ends Camera Cable Ends CCD Camera Head Swivel Assembly attaches to Ear Scope Connects to Platform Box Just pull straight out Red dot Pull knurled goes up ring to release Power Cable S Video Cable Figure 2 Cables and connectors PUB 112 Rev B doc 3 User s Manual Video Otoscope AMD 300S Thumb Tab on Barrel of Focus Ring Set Ear Scope CCD Camera Head Screw oe ey Tip Speculum Optical Barrel Release Threaded Fiber Por tor Insufflation Coupler Lever Connection Optic Insufflation Bulb for Fiber Bundle Bulb Optic Swivel Assembly Figure 3 Ear scope assembly 1 1 3 Hardware Features 1 1 3 1 Platform Box The platform box includes the following items e Power Switch The power switch turns the platform box on 1 or off 0 Caution never turn the power switch off then on in quick succession Once the unit is turned off wait at least 15 seconds before turning it back on Otherwise the lamp may fail to reignite and lamp life will be shortened e Color Reset button white balance and LED indicator light Pres
5. Sa Oo VR PPS CP NE DVPOR tees 1 IT Introduction to th V1deo OLOSCODGO vacaciones eth reati t UR eave slats LAT Funcional DES rip HOR uai iui oido a hot ees eee ee I PEZ Man Componer i nudatus a euishas dette edet aen edet end 1 1 3 Hardware Eeatifesscocunt e reiten eases Pedo ER N tee fu tu D Ebo Te eoe ER 4 IL Plattorm JOX xeu eio c Meus MIU E LRL E M LL AM DM EA LUE EIE 4 11 52 Ear Scope zXSsemblysssa cuo Dundee isse 5 1 1 4 Video Otoscope Features in the AFHCAN Software sse 6 1 2 Particulars of the AFHCAN Installation eee nnne 7 LE Warnings and C 3UtODSso ceperit dius ie OR ines RO PR Pe s EL 8 DPCCELON OT MOM Rcx ee v CN 9 241 Basie Operatins Procedutes oie MM NIMM ENIM DE MICI 9 2 1 T SS fart the SOL W MPO oeste El pese Mein EMO UE Mi T E AM n cant mre IL E PEDE 9 2 1 2 Ensure the Bar Scope TID TS Cleah eee ee eicit Get E Pier eiiis 10 21 3 Pertormi olor Reset AG USUI Ui Sapete eati eo repperi da 10 2 Wr Use the Focus bo olo RTI 11 2 1 5 Verify Camera Orientation White Dot Position cccccccccccccccccecceeeeeeeeeeeeeeeeeeees 12 21 01 Capture Inmages Into a 86 uoces Drm a 13 2 1 7 When Finished with a Patient ccccscceccecceccoccoccccccsccecesccscceccescascascescaccescess 15 22 SPECIAL PIOUOdUTe Suo weist n AA dad tacaistaveqausasaevaioaateda wats 15 2 2 Usine heisann Bul Dronen E aera eMe 15 Section 3 Clinical Considerat
6. as follows 1 From the Start screen press or click on the Create a New Case button 2 Select real or test case as appropriate 3 From the Add To Case screen press or click on the Video Otoscope button Um A screen similar to the one in Figure 6 will show up Otoscope Copyright 2 Video Patient Picture se Big Lake Clinic E 21 User Sherwoo d Duane Thumbnails Take Picture Freeze Rotate Save Figure 6 Initial screen when using the video otoscope Refer to the Software User s Manual for background information on using the software PUB 112 Rev B doc 9 User s Manual Video Otoscope AMD 300S 2 1 2 Ensure the Ear Scope Tip Is Clean The following steps should be performed each time the otoscope is used Caution never turn the otoscope off and on in quick succession Whenever you turn the otoscope off wait at least 15 seconds before turning it back on again Otherwise the lamp may fail to illuminate properly and the life of the lamp will be shortened Turn the otoscope light box on and set the intensity adjustment to maximum turn the Light Intensity Control Knob fully clockwise As the lamp warms up light will be visible through the vents located below the Light Intensity Control Knob If a speculum is attached remove it and discard presumably it has been used Use an alcohol prep pad to clean any wax oil or other material from the tip Attach the insufflation bulb aim the barrel downwa
7. checked and press the Save button Any images that were not checked will be discarded the desired images will be saved into the case and the software will bring up the Case screen 9 Additional otoscope images can be added to a case by returning to the Add To Case screen From the Case screen press the Add To Case button and then press the Video Otoscope button PUB 112 Rev B doc 14 User s Manual Video Otoscope AMD 300S 2 1 7 When Finished with a Patient The following steps should be performed at the conclusion of each clinical use l 2 Remove and discard the speculum Attach the insufflation bulb Clean the tip with an alcohol pad aim the barrel downward and blow the tip dry with the insufflation bulb If the otoscope is not likely to be used again within the next 45 minutes set the power switch on the Light Box to 0 off Note if the otoscope will be used for a number of patients it is okay to leave the otoscope powered up When not in actual use it is a good practice to turn the Light Intensity Adjustment Knob fully counter clockwise minimum intensity 2 2 Special Procedures 2 2 1 Using the Insufflation Bulb In the AFHCAN installation the primary use for the insufflation bulb 1s to assist in cleaning and drying the tip of the otoscope However the insufflation bulb can also be used clinically for observing the flexibility of the tympanic membrane Using the insufflation bulb for this purpose requires
8. focusing the ear scope Figure 7 The focus tool is included in the supplies drawer on the Cart Using the focus tool provides a starting point for a good focus distance that will work in most situations Note if a focus tool is not available adjust the focus by holding the tip about 1 2 inch away from a paper with some printing on it VIDEO OTOSCOPE FOCUS TOOL Figure 7 Focus tool mounted on barrel To focus with the focus tool proceed as follows l 6 Ensure the LED indicator light next to the Image Enhance button is off If it is on push the Image Enhance button to turn the image enhancement function off Insert the barrel of the ear scope into the focus tool as far as it will go this will not work with a speculum attached View the image on the screen if the image border is flashing red push the Live button and rotate the focus tool to verify you have a live image Slowly rotate the focus ring back and forth to zero in on the clearest possible image Note to verify focusing was done you can add the focused image to the case as described in Section 2 1 5 below Push the Image Enhance button to turn on image enhancement the LED indicator light beside the Image Enhance button will come on The on screen image will sharpen dramatically Remove the focus tool from the ear scope Figure 8 shows a sequence of images showing unfocused focused and enhanced images of the focus tool PUB 112 Rev B doc 1
9. image 3 tool 11 tool image 11 PUB 112 Rev B doc Index foot switch 14 image 14 freeze button 7 functional description See video otoscope functional description fuse blown 23 drawer 22 drawer image 2 inspection 22 replacement 22 retaining tabs 22 hand switch 14 image 14 hook See ear scope image blurry 23 capture 14 characteristics of good images 17 color 10 23 grainy 23 name 14 none 23 rotation 12 spots 23 image enhance button 5 11 image 2 insufflation bulb 6 10 15 image 4 lamp 4 caution 7 image 2 not lit 23 replacement 19 replacement image 20 retaining spring 19 retaining spring 1mage 20 light box See platform box light intensity adjustment knob 15 light intensity control knob image 2 light intensity control knob 5 10 light post adapter 6 Live button 13 optic coupler 5 6 8 12 image 4 platform box 1 4 7 21 caution 8 image 2 serial number image 2 power cable connector image 2 User s Manual Video Otoscope power switch caution 4 8 image 2 rotate button 7 save button 7 set screw 12 software 8 speculum 15 sizes 13 start screen 9 S video connection image 2 Take picture button 7 image 14 tympanometer 15 video capture card 7 video otoscope button image 9 functional description 1 video picture screen 6 image 6 white dot See camera orientation PUB 112 Rev B doc 26 AMD 300S
10. live video feed is displayed on the touchscreen monitor allowing the healthcare provider to position the instrument to obtain the desired view Images from the video input can then be captured and saved in a case as digital photographs 1 1 2 Main Components The video otoscope system consists of the following main components Figures 1 through 3 e Platform Box sometimes called a light box The platform box contains the light source digital imaging electronics and power supply e cable assembly The cable assembly is a pair of cables bundled together in a Teflon sheath fiber optic bundle The fiber optic bundle is a cable that conducts light from the light source in the platform box to the ear scope camera and camera cable The camera cable includes a CCD camera head wiring and a multi pin connector that plugs into the platform box e ear scope assembly The ear scope assembly is the hand held unit brought to the patient s ear PUB 112 Rev B doc 1 User s Manual Color Reset Button White Balance Power On Off Switch 1 On Image Enhance Button sharpen Fuse Drawer When platform box is turned on cooling fan will run Power Cable Connector Figure 1 Platform box PUB 112 Rev B doc Video Otoscope LEDs light when associated button is active OMPOSITE SERIAL NO S VIDEO EN 01568 AMD 300S Camera Connector Port Light Intensity Control Knob set on maximum Fiber
11. one of the existing images brought up for viewing After an image has been captured the system returns to a live image in the central viewing area Take Picture Switches the image displayed in the central viewing area to the live Live video feed from the otoscope When the image is live there will be a steady white border around the central viewing area Temporarily freezes the image in the central viewing area so it can be examined When the image is frozen the border around the central viewing area will flash red and white A frozen image can then be captured by pressing the Take Picture button A live video feed from the otoscope can be brought up in the central viewing area by pressing the Live button Freeze The Rotate button works only when a thumbnail image has been selected for viewing Each time the Rotate button is pushed the image is rotated 90 degrees clockwise The rotated version of the image is what will be saved in the case Saves all the images with a green checkmark and a name into the case Save and goes to the Case screen Returns to the Add To Case screen If images have been captured a message will appear advising that images will be lost and inviting you to confirm your decision 1 2 Particulars of the AFHCAN Installation The video otoscope is securely attached to the AFHCAN cart The Platform Box 1s affixed to the top shelf by means of Velcro The Platform Box can be removed for maintenance fo
12. the use of a rubberized speculum sized for the patient s ear canal These items are not supplied by AFHCAN and a description of this clinical practice 1s beyond the scope of this manual If a typmanometer is attached to the cart then that device would be the preferred way to measure the flexibility of the tympanic membrane The typmanometer provides numerical data that is incorporated into a case as a graph PUB 112 Rev B doc 15 User s Manual Video Otoscope AMD 300S PUB 112 Rev B doc 16 Section 3 Clinical Considerations These pointers are to be used as a supplement to your clinical experience 3 1 Guidelines for Clinical Success Characteristics of a good image clear sharply focused tympanic membrane in center filling most of available image area good color fidelity up on the image reflects up on patient s ear Good practices 3 2 obtain images and data from both ears for the sake of comparison and include eft and right in image name name images with helpful information straighten ear canal by pulling pinna up and back for most adults back for most children Common Mistakes Poor quality images are often the result of the following 3 3 poor focus uncentered image scope not parallel with ear canal tip not in far enough white dot on camera head not up in relation to the patient s ear Tips and Tricks You may find the following pointers helpful do not irrigate painful bleeding or drai
13. 1 User s Manual Video Otoscope AMD 300S Out of Focus In Focus Image Enhance On Figure 8 Sequence of screen shots showing degrees of focus 2 1 5 Verify Camera Orientation White Dot Position There is a white dot on the camera head that indicates up with reference to the digital image When dealing with a circular image it is important handle the instrument so up inside the ear canal corresponds with up on the displayed image Normally the ear scope is assembled so the white dot is on the opposite side from where the light cable enters the ear scope Gravity will tend to orient the ear scope so the light cable is hanging straight down which would position the white dot on top If the patient is not sitting up for example it may be helpful to rotate the camera head so the white dot is in a more convenient orientation Note The image can also be rotated in 90 degree increments in the image viewer of the AFHCAN software Figure 9 illustrates how the white dot determines the frame of reference for up on the image In this example the white dot top of camera is rotated 90 degrees to the left with respect to the ear scope barrel and fiber optic bundle As a result the image appears on the screen rotated 90 degrees to the right To reposition the white dot proceed as follows 1 Loosen the set screw on the optical coupler 2 Rotate the ear scope in relation to the optical coupler and camera head to the desired orientation
14. User s Manual Video Otoscope AMD 300S Welch Allyn AMD Document ID PUB 112 Revision B User s Manual Video Otoscope AMD 300S The names of any providers and patients used in illustrations or examples in this document are fictitious Every effort has been made to ensure this manual is accurate complete and useful Please let us know if you have any suggestions for improvement using one of the following means of contact AFHCAN Training Department 4000 Ambassador Drive Anchorage AK 99508 Phone 877 885 5672 Fax 907 729 2269 Email customersupport athcan org Copyright 2006 Alaska Native Tribal Health Consortium ANTHC All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means including photocopying electronic mechanical recording or otherwise without the prior written permission of Alaska Native Tribal Health Consortium PUB 112 Rev B doc User s Manual Video Otoscope AMD 300S Table of Contents Section Title Page PRC PINE V A pout tis Document gare Sees Seam ca a dass ecd oret caa c lcu hears ru CLA esaa V RelatedJDOCUPIO Ns ous eoo tome eret E etie nie Ee eR MM E Ode E Lr Im MAD IR M eee A Se V For More Information c ccccccceccoscoccosccscccccsccscceccsccecccsceccaecascscescescescescescescssscescascescescecs V Section 1 IntEoduct0nss i eco eri eee c Tore obse accen op ea UPS eU edP Po Go obo
15. al Video Otoscope AMD 300S 8 Holding it by the ceramic base and making sure the alignment tab goes into the notch Figure 13 pull the retaining springs back and slip the lamp into position in it s circular pocket Note make sure the lamp is fully seated within the circular area When properly seated the tab will be in its notch and the connector pins will be at a slight upward angle Alignment tab seated in notch Figure 13 Lamp correctly seated with alignment tab in notch 9 Push the connector onto the connector pins The pins are different diameters so the connector can only be installed one way 10 Slide the plain end of the Lamp Replacement Door under the rim of the opening in the platform box 11 Using small screw driver tighten the retaining screw on the Lamp Replacement Door fully The Lamp Replacement Door must be fully closed and seated against the supporting parts 12 Place the Platform Box on the top shelf making sure the Velcro strips reconnect 13 Plug the cables into the Platform Box as follows S video cable check alignment and plug straight in power cable orient correctly and plug straight in fiber optic cable push straight into connector in center of Light Intensity Adjustment Knob camera cable make sure red dot on connector is up and push straight into connector until it clicks 14 Apply power and verify operation PUB 112 Rev B doc 21 User s Manual Video Otoscope AMD 300S 4
16. ee ways to capture an image on the AFHCAN Cart as shown in Figure 10 PUB 112 Rev B doc 13 User s Manual Video Otoscope AMD 300S Take Picture On Screen Button Hand Switch Figure 10 Three ways to capture an image As a way to involve the patient consider letting them hold the hand switch and take the image on your instructions Images taken accidentally need not be saved into the case 3 Place the hand switch or the foot switch in a convenient location 4 Position the patient and yourself so you can watch the on screen image 5 Guide the ear scope into the patient s ear until the tympanic membrane is in full view refer to Section 3 for tips on dealing with wax as well as other recommendations for handling the instrument 6 When satisfied with the image capture it by pressing Take Picture button or by pressing the hand switch or the foot switch As each image is taken a thumbnail of the image is added in the left bar area of the screen Note a series of images can be captured 7 To save an image it must be named and checked Click on the thumbnail The selected thumbnail image will have a yellow border a full size version of the image will be displayed in the image viewing area and a data entry box will open up for naming the image as shown in Figure 4 Section 1 1 4 Enter a name and select the next thumbnail image 8 Once you have determined which images to keep ensure those images are named and
17. fflation bulb can be attached 1 1 4 Video Otoscope Features in the AFHCAN Software The features of the AFHCAN software that are unique to the video otoscope are contained on a single screen the Video Picture screen see Figure 4 where otoscope images are captured and saved Once the image has been saved to the case it can be viewed using the image viewing tools available on the Case screen It is possible to select the Video Otoscope button and open the Video Picture screen without identifying a patient This may be useful when demonstrating the equipment 00 2005 Aaska Native Tribal Health Consortium All Righi Yellow border Video indicates image eee vel bus was selected Sy ls for viewing E Image name y dx N Take Es gt N Picture will appear here Box must be checked to save image to case Freeze Flashing red border AN i Rotate means image is N y not a live video feed y Name data entry box will appear when tumena Image Name as is selected Figure 4 Example of the Video Picture screen PUB 112 Rev B doc 6 User s Manual Video Otoscope AMD 300S Table 1 describes the functions of the buttons in the right bar area Table 1 Functions of Video Picture screen buttons Button Function Captures the image currently in the central viewing area as a new image and creates a thumbnail of that image The image in the central viewing area may be a live image a frozen image or even
18. ionS scscesesesesesesescccocoesesesesosoesesesesosoeoesesesosoesesesesesosoesesesesosseo 17 3 1 Guidelines for Clinical Success 0 cccccesccscceccecceccecceccacceccescesceccssccesceccascascescescescess 17 32 6 INOA E lt E ANE EEA AAE MU EL AAEN EEA AAA 17 9 0 MGTIO SSN DEG S caesar te tee ace A utem MES 17 Section 4 Routine Maintenancee ccccccccccccccccccccccccccccccccccccccccccccccccccccsccccccccccccccccccccccccces 19 A Care IN T6anitig cte ix oc Seuss a EE AAEE E AE 19 A2 Replacement Henis ocu ont EN E dU RE BERNER 19 AD A Replace the 3mp tope io o NIE ae ee 19 A 2 2 Checkine and Replacing the PUSS cse m n den aem dia ded 22 7 3 Elementary LroubleshoOLIb eae DoD De rb n dett tua d dedu at ds 23 PUB 112 Rev B doc lil User s Manual Video Otoscope AMD 300S Figure OO ON NHN Nn BW NO mm pe KR U N Table List of Illustrations Title Page PLOU OO a a T ire ener I SE M MEE 2 ABIES ald COMME DES eenaa vais auivaaeetman aia daneasnnceaveisieianeuaes 3 Earscope ass CIM eine e be EA m auti ete te NEEE E e 4 Example ofthe Video Picture SCECCD e or oo HERI EUN nus Du 6 Correct way to hang the ear scope assembly on its hook ccc cccccccccccecececeeeeeeeeeeeeeeeees 8 Initial screen when using the video otoscope cccccccccsseseeeeeeeeeeeeeeeeeeeecceeeeeeeeeeeeeeeeeeeeeees 9 FOCUS tool AMOUNTS OM DEE CMs ct iod auem QUE see a 11 Sequence of screen sho
19. ning ears do not irrigate an ear with known tubes unless instructed to do so if wax is present try to look around it it may be necessary to remove wax toddlers and babies need to be restrained have a parent or other adult assist keep the patient interested in the procedure by allowing him or her to watch the on screen video and assist in capturing the image PUB 112 Rev B doc 17 User s Manual Video Otoscope AMD 300S PUB 112 Rev B doc 18 Section 4 Routine Maintenance 4 1 Care and Cleaning The following are basic cleaning activities e Before and after each patient clean any oils or wax from the tip of the ear scope with an alcohol prep pad speculum removed Aim the ear scope down and blow the tip dry with the insufflation bulb e Use a vacuum to clean any dust from the equipment e Wipe down open surfaces with a clean damp not wet cloth as needed e Disinfect the hand switch with an alcohol prep pad 4 2 Replacement Items 4 2 1 Replacing the Lamp Note before assuming the lamp is bad run through the troubleshooting checklist in Section 4 3 below The lamp used as a light source is a Welch Allyn product part number 09500 To replace the lamp proceed as follows 1 On the Platform Box turn power off and allow the lamp to cool 2 Unplug all cables from the Platform Box to include S video cable from back pull straight out power cable from back pull straight out fiber optics cable from front
20. pull straight out camera cable from front hold the knurled part of connector and pull straight out pulling on knurled ring releases connector 3 Carefully but firmly pry the Platform Box loose from the Velcro strips that secure it to the top shelf and set it upside down on a convenient work surface 4 Using a small screw driver or a coin unscrew the retaining screw of the lamp replacement door and lift it off the Platform Box see Figure 11 Note removing the old lamp and installing the new one involves a certain amount of gentle fiddling to manipulate the retaining springs and move the lamp into or out of position PUB 112 Rev B doc 19 User s Manual Video Otoscope AMD 300S Bottom of door fits under nickel Ceramic Connector Base Figure 11 Removing the lamp replacement door 5 Using two fingers pull the lamp retaining spring back away from the lamp see Figure 12 With your other hand angle the lamp up so it can be slipped out from the circular pocket where it is normally seated Pull retaining spring away from lamp to release a Figure 12 Lamp retaining spring 6 Once the lamp has been freed pull the plastic connector off the connector pins Caution avoid touching the silvery finish on the back of the new lamp because body oils will degrade the lamp performance Always hold the lamp by its ceramic base 7 Obtain a new lamp and find the alignment tab PUB 112 Rev B doc 20 User s Manu
21. pull the fuse out and replace it 5 Making sure the alignment tab 1s aligned with the slot push the fuse drawer back into place until both retaining tabs click into position 6 Plug the power cord back in and verify operation PUB 112 Rev B doc 22 User s Manual Video Otoscope AMD 300S 4 3 Elementary Troubleshooting Table 2 provides some general guidelines on troubleshooting the video otoscope The Operating Manual provided by AMD may also contain some useful troubleshooting information Table 2 Troubleshooting guidelines Problem blurry image no image lamp not lit poor color fidelity strange bluish color to image excessively bright spots in image grainy image spots on image PUB 112 Rev B doc Possible Solutions wax oil or something else on tip clean with alcohol prep pad out of focus use focus tool patient moved when image was captured Image Enhancement button not pressed LED indicator beside button not lit water or fluid in the ear canal S video cable disconnected from Platform Box power off power cable disconnected camera cable loose or disconnected power turned off then on in less than ten seconds turn power off allow lamp to cool for 15 seconds then turn power on fuses blown bad lamp perform Color Reset white balance procedure problem with monitor or printer ensure lamp has warmed up for at least 10 seconds before capturing image may be caused by light from tip
22. r example lamp replacement refer to Section 4 The fiber optic bundle and camera cable are fed through a Teflon sheath that holds the cables together as an assembly The cable assembly is clamped to the cart The power cable is routed to a power outlet in the lower compartment and the S video cable is routed to a video capture card in the computer The power and video cables are incorporated in the Cart s cable management hardware The AFHCAN Cart is not intended for use in a sterile environment so a soaking cap normally included with the camera cable may have been removed While the light source and camera head can theoretically be attached to other types of endoscopes the sterilization requirements associated with other endoscopes makes their use on the AFHCAN Cart impractical PUB 112 Rev B doc 7 User s Manual Video Otoscope AMD 300S 1 3 Warnings and Cautions Please observe the following points e This manual is intended for clinically trained medical staff using the AFHCAN Cart All procedures assume the user understands and determines when the procedures described here are appropriate and when they are contraindicated Clinical tips are provided as a supplement to your training and are provided to help you succeed in using this equipment e Never turn the Platform Box off and on in rapid succession Wait at least 15 seconds after turning the power off before turning power back on If power is turned on too soon the lamp may not igni
23. rd and blow through the tip a number of times to dry the alcohol spray may be visible against a dark background 2 1 3 Perform Color Reset Adjustment Perform a Color Reset adjustment also known as white balance in the following circumstances e at least once each week e after a lamp is replaced e any time there is a question about good color fidelity of the image Proceed as follows l Ensure the Light Intensity Control Knob is fully clockwise maximum intensity Place a piece of pure white paper on any convenient work surface Aim the light at the paper holding the ear scope tip between 1 2 inch to 1 inch away from it Holding the ear scope steady push and hold the Color Reset button The LED indicator light next to the Color Reset button will flash a few times while the electronics are working After a moment the flashing will stop indicating that white balance is complete Release the Color Reset button Note ifthe white balance adjustment is correct to begin with the LED indicator next to the Color Reset button will not flash at all To verify operation of the Color Reset button you can first perform the white balance adjustment using a target that is not white then repeat with a white target By using a non white target first it forces the white balance processing to take place PUB 112 Rev B doc 10 User s Manual Video Otoscope AMD 300S 2 1 4 Use the Focus Tool AFHCAN has designed a focus tool to assist in
24. sing and holding the Color Reset button activates electronics in the platform box that perform color adjustments based on a pure white image when the Color Reset button is pushed the LED indicator beside the button will flicker a few times indicating that the Color Reset adjustment is in progress when the flashing stops the Color Reset button can be released PUB 112 Rev B doc 4 User s Manual Video Otoscope AMD 300S e Image Enhance button and LED indicator light pressing the Image Enhance button activates image enhancement circuitry in the platform box and sharpens the image when lit the LED indicator light beside the Image Enhance button indicates the image enhancement circuitry has been turned on e Light Intensity Control Knob the Light Intensity Control Knob adjusts the amount of light delivered to the tip of the ear scope with clockwise rotation increasing light intensity and stops at maximum and minimum settings the knob does not change the intensity of the lamp but opens or closes an aperture between the lamp and the fiber optic bundle for most viewing situations maximum intensity is best e Camera Connector Port the camera connector port provides the electrical connection for signals coming from the camera head when plugged into the camera connector port the connector on the camera cable must be oriented with the red dot up tabs in the connector will physically prevent misalignment e Fiber Optic Illumination Por
25. striking wall of ear canal redirect tip to illuminate tympanic membrane Light Intensity Adjustment Knob may be set too low maximum intensity is normally used fiber optics cable connector may not be fully seated or misaligned in center of Light Intensity Adjustment Knob in general it should not be necessary to pull the ear scope assembly apart to clean the optics on occasion it may be possible for bits of dirt to get onto the lenses transmitting the image to the camera head disconnect the optical coupler from the ear scope and camera head and check and clean the lenses with high quality optical papers or cloths 23 User s Manual Video Otoscope AMD 300S PUB 112 Rev B doc 24 add to case screen 7 9 AFHCAN cart 7 software 6 back button 7 barrel release lever image 4 bulb See insufflation bulb buttons function of 7 cable assembly 1 camera fiber optic bundle 1 images 3 camera cable 1 8 cable 1mage 3 connector port image 2 head 6 orientation 12 camera connector port See cleaning 19 color reset adjustment intervals 10 procedure 10 color reset button 4 10 image 2 connectors images 3 cooling fan image 2 create a new case button 9 ear scope 8 assembly 5 assembly 1 assembly image 4 cleaning 9 19 hook 8 hook image 8 endoscopes 7 fiber optic illumination port image 2 fiber optic bundle 1 8 image 3 4 fiber optic cable 8 focus image 11 ring 5 ring
26. t the fiber optic illumination port provides a connection point for one end of the fiber optic bundle fuse drawer the fuse drawer located above the power cord allows the power supply fuse to be pulled out visually checked and replaced if necessary 2 0 ampere 250 volt 5 mm by 20 mm Fast Blo Welch Allyn part number VA303 or equivalent lamp replacement door the lamp replacement door allows the user to access and replace the lamp which is the light source for the otoscope Welch Allyn part number 09500 1 1 3 2 Ear Scope Assembly The ear scope assembly consists of the following items e ear scope the ear scope is the component actually inserted into the ear consisting of a tip a barrel a light source connector and a viewing end PUB 112 Rev B doc 5 User s Manual Video Otoscope AMD 300S e optical coupler the optical coupler consists of a set of lenses a focusing ring a threaded connection for attaching to the camera head spring loaded flanges for securing the ear scope and a set screw to keep the ear scope from rotating in relation to the camera e camera head the camera head is part of the camera cable assembly that contains the digital imaging chip CCD imager and connects to the optical coupler e light post adapter the light post adapter comes off of the ear scope barrel at a right angle and includes a swivel adapter which connects the fiber optic bundle to the instrument as well as a small port where an insu
27. te properly and lamp life will be diminished e Ifthe power is left on between patients turn the Light Intensity Adjustment Knob fully counter clockwise minimum intensity This simply reduces a potentially annoying or distracting source of very bright light in the work area e Avoid touching the silvery finish on the back of the new lamp or the glass on the front of the lamp because body oils will degrade the lamp performance Always handle the lamp by its ceramic base e Do not unscrew the optical coupler from the camera head because this creates an opportunity for moisture or dirt to get into this area e Avoid crimping or crushing the fiber optic cable and camera cable e Do not drop or bang the ear scope assembly because the optical elements are glass e Place the ear scope assembly on its hook so it does not put stress on the extension for the fiber optic bundle Figure 5 Correct placement of ear scope on hook Do NOT place ear scope like this Can result in stress cracks and serious damage to instrument Position hook in narrow spot between camera head and focus ring Figure 5 Correct way to hang the ear scope assembly on its hook PUB 112 Rev B doc 8 Section 2 Operation 2 1 Basic Operating Procedures Refer to Section 1 1 for descriptions and illustrations of the controls indicators and other items referenced in these procedures 2 1 1 Start the Software Log in to the software if necessary and proceed
28. ts showing degrees of focus W Wu u u u sssssseesererererrrerererrrrrrrrrssnnee 12 Relationship between image up and the white dot 13 Three ways to capture an Image ioo pereo er pa SER PRI RE ERRARE RRRSSG ER Ee Spa ot AP PU AN RES 14 Remoyineg the lamp replacement d0On sanne 20 Lamp retarmine SDEITB ooo d tait nin aces aii aetna estime A RI Lecce pe ee 20 Lamp correctly seated with alignment tab in notch n ccc cccccccccccceeeeeeeeeeeeeeeeeeeeeees 21 Removinp Ce MISC FAN CL eese iet N Na deleti 22 List of Tables Title Page Functions of Video Picture sereetDUtLODSi io ue e EHE ER RM HEN edsis 7 Troubleshootimie CUI SHINS 2 detener ttai ei qurd oat casa ta ae quat 23 PUB 112 Rev B doc IV User s Manual Video Otoscope AMD 300S Preface About this Document This document is part of the set of user manuals provided with the AFHCAN Cart These user manuals covering various topics are normally assembled into a binder delivered with each Cart This modular design has the following advantages e the set of manuals provided with your cart includes documents for the specific peripheral devices installed e each document is a stand alone publication so as new devices or features are added to the Cart new manuals can be added to the existing binder e user information that is common to all items of equipment does not need to be repeated in each module but can be covered in separate modules and referenced as needed Related
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