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DD250 english - Ultrasound Technologies Ltd.

1. operation we suggest that the source of EM disturbance is identified and its emissions reduced lf the user has any doubt regarding the identification and resolution of adverse EM conditions please seek advise from Ultrasound Technologies Ltd This Equipment complies with the essential requirements of the European Council Directive 93 42 EEC 2007 47 EC Fetatrack DD250 Operating Instructions Issue 1 Ultrasound Technologies Ltd Lodge Way 0120 Portskewett Caldicot NP26 5PS United Kingdom Tel 44 0 1291 425425 Fax 44 0 1291 427093 email ultratec doppler co uk www doppler co uk Page 11
2. your supplier When contacting your supplier with a problem please have available the instrument type and serial number The serial number can be found on the rear of the unit A service manual for this equipment which includes circuit diagrams parts lists and test procedures is available and may be purchased from your supplier or directly from Ultrasound Technologies Ltd WETE UL Your DD250 is warranted for a period of 3 years against defects in material and workmanship Any instrument that proves to be defective within that period will be repaired or replaced free of charge provided that i the instrument has not been damaged accidentally or by misuse or mishandling ii no unauthorised attempts at repair have been made iii the goods are returned to Ultrasound Technologies Ltd or its authorised representative freight pre paid Under no circumstances whatsoever shall Ultrasound Technologies Ltd have any liability for loss or for any indirect or consequential damage Page 10 Fetatrack DD250 Operating Instructions Issue Care has been taken through the design and manufacturing processes to minimise the EM emissions that may be produced by this equipment However in the unlikely event that the unit causes an EM disturbance to adjacent equipment we suggest that the procedure is carried out out of range of the affected equipment Immunity If the user has any doubt regarding the unit s EM immunity during routine
3. am interchangeable lt 10mW cm2 300HZ 1KHz 2 3 MHz 300HZ 4KHz 5 8 MHz Multipoint real time autocorrelator 50 210 bpm 1 key for unit on off Push Volume control Rotary Volume LCD Display with icon for battery low and pulse battery charge LED mains on LED 200 260 VAC or 100 130 VAC 46 64Hz 20VA gt 30 hours of USE battery s will self discharge when not used lt 5hours Audio output to optional headset RS232 Interface PC ABS 32x19x6cm 1 9Kg Type B IEC 60601 1 2006 Page 9 Care of your DD250 After each use carefully wipe excess coupling gel from the transducer with a soft tissue Never use alcohol or any other solvent to clean any part of the DD250 as these may cause damage If cleaning becomes necessary wipe the DD250 with a damp cloth moistened with a mild detergent or Milton The transducer face is very delicate and may be damaged by dropping Simple fault finding In the unlikely event of instrument failure the following simple checks may be made before contacting your supplier for further advice e Unplug any headset and turn the volume control to maximum Turn the unit on and observe the Battery Low indicator if it does not illuminate connect unit to a mains supply and try again If the Battery Low indicator illuminates and then goes out normal operation stroke the transducer face o If no audio signal is heard in the loudspeaker consult
4. e making it easier to detect the weaker signals It is also usual for the DD250 to be used in association with a pressure cuff and sohygmomanometer to indicate the location and extent of arterial occlusion in the form of ankle brachial pressure index and segmental pressures Due to the variation of leg blood pressure over a wide range with the systemic pressure the actual values are less useful than the pressure index which relates the ankle pressure to the pressure obtained at the brachial artery Using the DD250 to measure both pressures will ensure compatibility In cases where patients have peripheral arterial disease using the DD250 due to its high sensitivity can be the only technique suitable for the measurement of leg blood pressure Pressure Index Ankle systolic pressure Brachial systolic pressure Normal ankle systolic pressure gt brachial pressure Normal pressure index gt 1 Abnormal pressure index lt 1 Page 8 Fetatrack DD250 Operating Instructions Issue 1 Ultrasound Frequency Transducer Output Power Audio Response Fetal Heart Rate Unit Controls Keys Controls Indicators Power Supply AC Input Voltage Frequency Power Battery Charge Life Battery Charge Time Output Headset Communication Enclosure Material Dimensions Weight Safety Classification Fetatrack DD250 Operating Instructions Issue 1 Specification DD250 2 3 5 8 MHz continuous wave 2 crystal narrow be
5. owing symbols have been used on the instrument and are defined as Type B equipment t Consult accompanying documents K DO NOT disposed of with your Alternating Mains Current normal waste ly Unit On Off Battery Charge Discharge state Before using your DD250 for the first time please read these operating instructions carefully Fetatrack DD250 Operating Instructions Issue 1 Page 3 A The DD250 is powered from an external mains power supply or from internal rechargeable batteries To connect to mains insert the mains cord into connector A found in the back of the unit and the turn the mains switch B to its on position The mains switch will be illuminated green when AC mains power is connected this indicator is repeated on the units front panel C Serial RS232 connection can be made by attaching the optional serial link cable to socket D on the rear of the unit contact supplier for further details with the optional headset connected at E Page 4 Fetatrack DD250 Operating Instructions Issue 1 D C A The DD250 operates by pressing the on off control A this control also alters the audio volume by rotating clockwise to increase and left to anticlockwise to decease The micro controller monitors the detected signal and turns the unit off when no signal has been detected for approximately 2 minutes The LCD displays battery condition and fetal heart rate B A battery icon is di
6. splayed when the battery requires changing The fetal pulse icon C flashes at approximately the same rate as the detected fetal heart When charging the internal batteries the charge state is indicated by a flashing indicator D when fully charged the indication will be fully on Fetatrack DD250 Operating Instructions Issue 1 Page 5 The DD250 includes a storage area from 2 transducers A These are held in place using magnetic retention There is a choice of up to 4 transducers that can be used with the DD250 2 for fetal use and 2 for vascular use These are connected to the DD250 using a retractile cable with a latching connector The selected transducer B is connected to the unit by the connector C to disconnect pull back on the outer cover of the connector DO NOT TWIST To connect a transducer align the red dots and lightly push the connector into the transducer socket The transducers are colour coded at the Transducer colour coding socket to indicate frequency Ponnedor incolor 2MHz Red 3MHz Orange 5MHz Green S8MHz Grey Page 6 Fetatrack DD250 Operating Instructions Issue 1 Fetal heart detection The DD250 can be used to detect the beating fetal heart from approximately the 10th week of gestation though this will vary between patients Apply a liberal amount of coupling gel to the area just above the symphysis pubis and position the transducer face flat against the abdomen Tilt the transducer slowly
7. ultrasound technologies DD2Z50 operating Instructions Introduction 3 DD250 Rear 4 DD250 Front 5 DD250 Transducers 6 Fetal heart detection 7 Vascular flow detection 8 Specification 9 Care of your DD250 10 Simple fault Finding 10 Service 10 Warranty 10 Emissions 11 Immunity 11 Page 2 Fetatrack DD250 Operating Instructions Issue 1 introduction This booklet explains the operation and use of the FETATRACK DD250 desk doppler Care has been taken during the design and manufacture of this product so that it satisfies all of the current safety standards set down by BS EN60601 1 2006 The DD250 is a mains or rechargeable battery operated desk Doppler designed to suit the needs of the General Practitioner and clinic where multiple disciplines require interchangeable transducers The DD250 can take a choice of 4 transducers 2 for fetal heart rate detection 2 and 3 MHz and 2 for vascular flow detection 5 and 8MHz The DD250 provides for the audio presentation of the fetal or vascular signal as well as digital fetal heart rate detection with the fetal heart rate displayed on an LCD display RS232 data port is included for the transfer of data to a PC to review the fetal heart rate traces The instrument is supplied complete with the following Doppler Instrument with an option of interchangeable transducers of 2 3 5 or 8MHz chosen at time of ordering Mains Cord Operating instructions Coupling gel The foll
8. until the fetal heart is heard in the loudspeaker or headset in early pregnancy the headset helps to eliminate ambient noise making it easier to detect the weaker signals Later on in pregnancy the best signals are generally found higher up the abdomen Avoid sliding the transducer over the abdomen as this results in an increase in the background noise and makes it more difficult to detect the fetal heart sounds a 5 th 1 So ee OO Om The DD250 may be used to locate the position of the placenta thus aiding in the early diagnosis of placenta praevia or eliminating placental site where amniocentesis is to be performed The sound from the placenta is an indistinct swishing caused by bloodflow in many vessels There is no distinct beat pattern to the sound The vessels of the umbilical cord give rise to a higher pitched sound than the normal fetal heart with pulsations at the fetal rate Fetatrack DD250 Operating Instructions Issue 1 Page Vascular flow detection The DD250 can be used to detect both surface vessels deeper arteries and veins using either the 5MHz or 8MHz transducers To obtain the best signal apply a liberal amount of coupling gel to the area of the vein or artery under investigation Tilt the transducer at approximately 45 degrees to the vessel Arteries give a high pitched pulsatile sound with veins giving a sound like a roaring wind The optional headset helps to eliminate ambient nois

DD250 english - Ultrasound Technologies Ltd.

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