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Haag-Streit AT 910, Instructions For Use Manual

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DEUTSCH

ENGLISH 

FRANÇAIS

ITALIANO

ESPAÑOL

NEDERLANDS

PORTUGUÊS

SVENSKA

DEUTSCH

ENGLISH

FRANÇAIS

ITALIANO

ESPAÑOL

NEDERLANDS

PORTUGUÊS

SVENSKA

© HAAG‑STREIT AG, 3098 Koeniz, Switzerland − HS‑Doc. no. 1500.7006000.04240 – 24. Edition / 2018 – 04

INSTRUCTIONS FOR USE 

Applanation tonometer

AT 900

®

 / AT 870

24. Edition / 2018 – 04

Introduction

Thank you for choosing a HAAG-STREIT device. Provided you comply carefully

with the regulations in this instructions for use, we can guarantee the reliable and

unproblematic use of our product.

Purpose of use 

The manual operated Goldman tonometer is an appliance that serves to measure 

intraocular pressure, according to the Goldman method. The measuring of the pres‑

sure requires to maintain a uniform applanation of the surface of the cornea. It is 

specially indicated in Glaucoma disease.

Contraindication

There is no absolute contraindication for execution of the tonometry. Appropriate

professional assessment and caution are necessary.

WARNING!

Applanation tonometry may only be conducted by appropriately trained 

and qualified medical personnel.

WARNING!

Read the instruction manual carefully before commissioning this pro-

duct. It contains important information regarding the safety of the user 

and patient.

NOTE!

Federal law restricts this device to sale by or on the order of a physician 

or licensed practitioner.

01-IFU_AT900-7006000-04240_eng.indd   2

03.05.2018   10:11:10

Summary of Contents for AT 910

Page 1: ...DERLANDS PORTUGUÊS SVENSKA HAAG STREIT AG 3098 Koeniz Switzerland HS Doc no 1500 7006000 04240 24 Edition 2018 04 INSTRUCTIONS FOR USE Applanation tonometer AT 900 AT 870 24 Edition 2018 04 01 IFU_AT900 7006000 04240_eng indd 1 03 05 2018 10 11 09 ...

Page 2: ...ording to the Goldman method The measuring of the pres sure requires to maintain a uniform applanation of the surface of the cornea It is specially indicated in Glaucoma disease Contraindication There is no absolute contraindication for execution of the tonometry Appropriate professional assessment and caution are necessary WARNING Applanation tonometry may only be conducted by appropriately train...

Page 3: ...0 Model BQ 7 3 4 Tonometer AT 870 7 3 5 Which slit lamp with which tonometer 7 3 6 Description of models 8 4 Commissioning 8 5 Operation 8 5 1 Astigmatism 8 5 2 How pressure is measured 8 5 3 Preparing the patient 8 5 4 Patient instructions 9 5 5 Preparation of slit lamp and tonometer 9 5 6 Measuring correctly 9 5 7 Sources of error 10 5 7 1 Wrong distance to patient 10 5 7 2 Position too far to t...

Page 4: ...in the packaging for a few hours before unpacking it conden sation Check the appliance for damage after it is unpacked Return defective appliances in the appropriate packaging Store packaging material carefully so that it can be used for possible returns or when moving NOTE Check the calibration of the instrument before first use according to the instructions in section 7 3 1 4 Installation warnin...

Page 5: ...prisms contact glasses and DESINSET is to be consulted regarding the exact functioning concentration working times and idle times Improper preparation can result in the transmission of diseases to the patient and user as well as damage to the measuring prism Residue from cleaning agents and disinfectants may irritate and burn the patient s eye As a rule the measuring prisms may be prepared togethe...

Page 6: ...on a monthly basis as described in the Mainte nance chapter A check will be absolutely necessary if external force is applied e g striking or dropping the appliance NOTE Ifarepairisnecessary pleasecontactyourHAAG STREITrepresentative 1 7 Warranty and product liability Haag Streit products must be used only for the purposes and in the manner des cribed in the documents distributed with the product ...

Page 7: ...r housing 2 Leave the spring in the aperture 3 Position and screw on tightly the pivot for the tonometer 4 Place the tonometer bearer arm on the pivot s pin and swivel the tonometer to the right until it snaps into position The tonometer will remain in this position even when not in use 5 When using the BI 900 BM 900 and BM 900 V the stop peg must be assembled a and when using the BC 900 or BD 900...

Page 8: ...e to read the Safety chapter and to observe its precautions before operating the equipment NOTE A smooth operation can only be guaranteed with the use of original HAAG STREIT measuring prisms and Tonosafe 5 Operation WARNING Reusable measuring prisms must be cleaned and disinfected after ev ery examination 5 1 Astigmatism If the cornea is spherical measurements can be taken on any meridian but it ...

Page 9: ...ough the measuring prism is practically reflection free Observation with AT 900 model R in the left eyepiece with AT 900 model BQ in the right eyepiece AT 900 model T 1 For an examination through the tonometer s left or right eyepiece the angle between the illumination instrument and the microscope should be approx 60 so that the image is bright and reflection free Alternatively lighting through t...

Page 10: ...he measurement 5 7 1 Wrong distance to patient No semi circular image only centre line is visible 3 3 The measuring prism is not coming into contact with the cor nea If the patient draws his head back slightly irregular pulsa tions will be caused because the measuring prism is touching the eye only intermittently If the patient retreats even further the fluorescein rings will disappear completely ...

Page 11: ...high low Only part of a semicircle in the upper half 10 10 Measuring prism not centred on the eye eye far too high Using the control lever move the slit lamp upwards Nearly entire circle above incomplete circle below 12 11 Measuring prism not centred on the eye eye still too high Using the control lever move the slit lamp upwards Two incomplete circles the larger one on top 13 12 Measuring prism n...

Page 12: ...es 0 49 kg without accessories 0 78 kg without accessories AT 900 model R AT 900 model T AT 900 model BQ 6 2 Applanation tonometer AT 870 Measuring force generated Via spring force AT 870 Installation On over the microscope Measurement range 0 80 mm Hg Measurement deviation See above model AT 900 Backlash width 0 49 mN Net weight 0 850 kg without accessories 1 Nominal value 2 Maximum limiting devi...

Page 13: ...g prisms Tonometer measuring prisms must be prepared in accordance with a different manual Do not use sprays Observe the manufacturer s safety instructions Do not use any cloths that drip Wring out any soaked cloths before use when necessary Ensure that no liquid penetrates the device Comply with the stipulated exposure time NOTE IP code IPX0 device is not protected against liquids 01 IFU_AT900 70...

Page 14: ... Check position 0 05 The zero line on the measuring drum is moved downwards opposite the index by a single marking width The feeler arm must move by itself all the way to the stop piece in the direction of the examiner Check position 0 05 The zero line on the measuring drum is moved upwards opposite the index The feeler arm must move all the way to the stop piece on the patient s side 0 05 0 05 Ch...

Page 15: ...on mark 6 down wards opposite the index by a interval The feeler arm must move towards the examiner Check position 6 1 The check point is at 6 1 Move the measuring drum s calibration mark 6 upwards opposite the index by a interval The feeler arm must move towards the patient 5 9 6 1 7 4 Checking the Tonometer AT 870 NOTE This check must be carried out once a month If the check yields errone ous re...

Page 16: ... corresponding to the measuring drum setting 2 is set exactly to the index mark on the weight holder whereupon the weight is fitted on the tonometer axis so that the longer part points in the direction of the patient The feeler arm must move towards the patient 6 2 0 6 2 Check position 1 95 Move calibration mark 2 on the measuring drum downwards opposite the fixed in dex by a width of one marking ...

Page 17: ...aned and disin fected after every examination See chapter 2 in the separate instructions for use Cleaning and disinfection HS item no 7220375 A 2 Accessories Tonosafe Tonosafe disposable prisms are a comfortable and effective solution to reduce the risk of cross infection in patients To nosafe is available in sterile packages with 5 supports and 100 disposable prisms HS item no 7220345 B Legal reg...

Page 18: ...H ENGLISH FRANÇAIS ITALIANO ESPAÑOL NEDERLANDS PORTUGUÊS SVENSKA HAAG STREIT AG 3098 Koeniz Switzerland HS Doc no 1500 7006000 04240 24 Edition 2018 04 01 IFU_AT900 7006000 04240_eng indd 18 03 05 2018 10 11 21 ...

Page 19: ...H ENGLISH FRANÇAIS ITALIANO ESPAÑOL NEDERLANDS PORTUGUÊS SVENSKA HAAG STREIT AG 3098 Koeniz Switzerland HS Doc no 1500 7006000 04240 24 Edition 2018 04 01 IFU_AT900 7006000 04240_eng indd 19 03 05 2018 10 11 21 ...

Page 20: ...2 82 eMail info haag streit com Internet www haag streit com 20 DEUTSCH ENGLISH FRANÇAIS ITALIANO ESPAÑOL NEDERLANDS PORTUGUÊS SVENSKA HAAG STREIT AG 3098 Koeniz Switzerland HS Doc no 1500 7006000 04240 24 Edition 2018 04 Should you have any further questions please contact your HAAG STREIT representative at 01 IFU_AT900 7006000 04240_eng indd 20 03 05 2018 10 11 21 ...

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