operation - zeiss · 2021. 2. 24. · gigasept paa concentrate 2 % x hibitane ® 0.5 % x jiaen 6 %...

Operation

319300-9231-000-GA-GB-030320

12

Cleaning and disinfection

CAUTION - PROPERTY DAMAGE

Do not use corrosive substances, alcohol or acetone and acetone-based cleaning agents to clean the device, as they could damage the surfaces. Only clean the outer surfaces of the AT 020. A cloth slightly moistened (not dripping) with weak detergent is recommended for cleaning the casing.

For cleaning and disinfection of tonometer measuring prisms please refer to the instructions for use and cleaning and disinfection of tonometer measuring prisms.

Instructions for use and disinfection of tonometermeasuring prisms

Addendum

Addendum Table of contentsInstructions for disinfection

319300-9231-000-AddGA01-GB-230819 3 / 16

Table of contents

1 Notes on the instructions for use ................................................................. 5

1.1 Scope of application ............................................................................................................. 5

1.2 Intended use of the document.............................................................................................. 5

1.3 Questions and comments ..................................................................................................... 5

1.4 Conventions in this document .............................................................................................. 51.4.1 Conventions in all text areas.............................................................................................................. 51.4.2 Conventions in a course of action...................................................................................................... 6

2 Safety notes ................................................................................................. 7

2.1 Ambient conditions .............................................................................................................. 7

2.2 Important general advice...................................................................................................... 7

2.3 Operation, environment ....................................................................................................... 7

2.4 Warranty and product liability.............................................................................................. 7

2.5 Validated cleaning and disinfecting agents .......................................................................... 8

2.6 List of disinfectants with good material compatibility with ZEISS measuring prisms............ 9

2.7 Service life .......................................................................................................................... 12

3 Cleaning and disinfection of reusable measuring prisms............................ 13

3.1 Manual cleaning steps ........................................................................................................ 13

3.2 Disinfection steps ............................................................................................................... 14

3.3 Rinsing and storage............................................................................................................ 14

Addendum 1 Notes on the instructions for useInstructions for disinfection 1.1 Scope of application

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1 Notes on the instructions for use

1.1 Scope of applicationThe present addendum applies to tonometer measuring prismswith the following identification:

• Reference number: 319300-9510-000

1.2 Intended use of the document

CAUTION! Hazard due to improper use

u Read these instructions for use before setting up and using theproduct the first time.

u Observe the information on the safety of users and patients.

This document describes the correct cleaning and disinfection oftonometer measuring prisms. Correct cleaning and disinfectionprevents the transmission of diseases to patients and users andmechanical damage. This process has been validated by anaccredited testing laboratory to protect material and patients.

1.3 Questions and commentsu If you have questions or comments concerning these instruc-

tions for use or the device itself, contact ZEISS Service.

You can find the ZEISS contact partner for your country on thefollowing website: www.zeiss.com/med

1.4 Conventions in this documentCertain types of information are specially marked in this documentfor better recognition.

1.4.1 Conventions in all text areas• This is a list.

– This is a second level list.

This is a cross-reference: Questions and comments [} 5].

This is bold type.

This is software code or program text.

Names of software dialogs, fields or menus, and softwaremessages are marked by quotation marks:

• "View" menu.

• "Do you want to save the settings?"

The steps in menu and file paths are separated by slashes:

1 Notes on the instructions for use AddendumInstructions for disinfection1.4 Conventions in this document

6 / 16 319300-9231-000-AddGA01-GB-230819

• "File / Save as"

• "My documents / Documents"

Keys, buttons, knobs, levers and other operating controls aremarked by square brackets:

• [START] key

• [Next] button

1.4.2 Conventions in a course of action

WARNING! This is warning information about hazards that can causedeath or severe injuries if not avoided.

The warning message names the possible consequences.

u This is a measure with which hazards can be prevented.

CAUTION! This is warning information about hazards that can causeinjuries if not avoided.



NOTE This is warning information about hazards that can causeproperty damages if not avoided.



þ This is a requirement that must be met before the start of asequence of actions.

1. This is a command.

2. CAUTION! This is a warning message about hazards thatcan occur during a single action. This is a command.

ð This is the result of a sequence of actions.

Addendum 2 Safety notesInstructions for disinfection 2.1 Ambient conditions

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2 Safety notes

2.1 Ambient conditionsPlease follow the instructions of use for the appropriate devices.

2.2 Important general advice

CAUTION! Risk due to contaminated products

Products listed in these instructions for use will not be shippeddisinfected. The use of these products can lead to patient injuries.

u Clean and disinfect the products in accordance with theseinstructions for use prior to first use.

• Always follow all warnings and notes in the instructions for useof the applanation tonometer and measuring prisms.

• Carry out examinations only with undamaged, cleaned anddisinfected measuring prisms.

• The measuring prisms used must not be damaged as they mightotherwise damage the patient’s cornea.

• Improper preparation can result in the transmission of diseasesto the patient and user as well as damage to the measuringprisms.

• Residue from cleaning agents and disinfectants can irritate andburn the patient’s eye.

• As a rule, the measuring prisms may be prepared together, butshould not be prepared with any other products.

2.3 Operation, environment• The operation and preparation must only be performed by

qualified and trained personnel whose training is the responsi-bility of the operator.

• Appropriate professional assessment and caution are necessary.

• The safety instructions in the instructions for use of the appla-nation tonometers also apply.

2.4 Warranty and product liability• The measuring prisms must be handled as described in the

Safety notes [} 7].

• Improper handling can damage the product. This voids allguarantee claims.

• Continuing to use a product damaged by incorrect handling canlead to personal injury. In this case, the manufacturer acceptsno liability.

2 Safety notes AddendumInstructions for disinfection2.5 Validated cleaning and disinfecting agents

8 / 16 319300-9231-000-AddGA01-GB-230819

2.5 Validated cleaning and disinfecting agents

NOTE Damage due to improper cleaning and disinfection

The tonometer measuring prisms may be damaged during cleaningand disinfection.

u Please refer to the list of material compatibility of ZEISStonometer measuring prisms with various cleaning agents anddisinfectants in chapter List of disinfectants with good materialcompatibility with ZEISS measuring prisms [} 9].

The following cleaning and disinfecting agents have been used inseveral validations.

Cleaning agents

• Palmolive 0.08 %

Disinfectants

Product Concen-tration

Exposuretime

Rinsing

Hydrogenperoxide H2O2

3 % 10 minutes Rinse with cold water for 5 minutes

Sodiumhypochlorite*NaOCl

10 % 10 minutes Rinse with cold water for 10 minutes

Sekusept forte S 3 % 15 minutes Rinse with cold water for 5 minutes

Tristel DUO 100 % 30 seconds Remove foam and wipedry with Tristel Wipe for 15 seconds

* These solutions have been validated with a mild soap (e.g. palmolive0.08%) as detergent.

Addendum 2 Safety notesInstructions for disinfection 2.6 List of disinfectants with good material compatibility with ZEISS measuring

prisms

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2.6 List of disinfectants with good materialcompatibility with ZEISS measuring prismsThe disinfectants listed below were only tested on their materialcompatibility with ZEISS measuring prisms.

NOTE Damage due to improper cleaning and disinfection

The effectiveness of the disinfectants has not been tested forcorrect disinfection of the tonometer measuring prisms.The sole purpose of the list below is to provide the user with achoice of suitable disinfectants which may be used for thevalidation of their own disinfection process.ZEISS rejects all liability if any of the disinfectants mentioned in thelist below is used without a proper validated cleaning and disin-fection process. The disinfectants may only be used with the concentrationmentioned on the list below. Higher concentrations can damagethe measuring prisms. In this case ZEISS rejects all liability. ZEISS rejects all liability if a disinfectant is used which does notappear on the list below.

u The efficacy of the disinfectants on ZEISS tonometer measuringprisms must be guaranteed by the user or the responsibleperson for reprocessing by validating their own disinfectionprocess.

2 Safety notes AddendumInstructions for disinfection2.6 List of disinfectants with good material compatibility with ZEISS measuring

prisms

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Disinfectants Testedconcentration

Alde-hyde free

Contai-ning

aldehyde

Comments

NaOCl (sodium hypo-chloride)

0.0525 % x


2.5 % x max. 100 cycles of 1h


10 % x max. 100 cycles of 1h

NaOH (sodiumhydroxide)

1 M (1 mol/l) x max. 100 cycles of 1h

H2O2 (hydrogenperoxide)

3 % x

Acrylan® 1) x

Almyrol® 4 % x

Bodedex forte 1 % x

Bomix plus 2 % x

Cidex® plus 3.5 % x

Cidex® OPA 1) x

Dakin solution 1) x

Deconex 53 Instrument

2 % x

Deconex 53 Plus 4 % x

Endo Septol FF 5 % x

Gigasept ® AF 4 % x

Gigasept ® AFforte

5 % x

Gigasept ® FFNEW

8 % x

Gigasept PAA concentrate

2 % x

Hibitane ® 0.5 % x

Jiaen 6 %"Yoshida"

0.05 % x

Korsolex basic 5 % x

Addendum 2 Safety notesInstructions for disinfection 2.6 List of disinfectants with good material compatibility with ZEISS measuring

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Disinfectants Testedconcentration

Alde-hyde free

Contai-ning

aldehyde

Comments

Korsolex extra 4 % x

Mucocit®-T 6 % x

NU-CIDEX® 1) x

PeraSafe® 1) x

Peraxylens® 1) x

Perfektan® active 2 % x

Perfektan® TB 4 % x

Sekusept® Activ 2 % x

Sekusept® ActivNEU

1) x

Sekusept® forte S 3 % x

Sekusept® PLUS 4 % x

Stabimed® 2 % x

Sterihyde® L 2 % x

Tristel DUO 1) x

Tristel SporicidalWipes

1) x

1) Activated solution according to manufacturer's instructions

2 Safety notes AddendumInstructions for disinfection2.7 Service life

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2.7 Service life

How long can measuring prisms be used?

CAUTION! Risk of exceeding the maximum service life

Exceeding the maximum service life of the tonometer measuringprisms may result in injury to the patient.

u Do not use the measuring prisms beyond the expiration date.

u Immediately replace damaged measuring prisms.

Due to the large number of variables to be considered (type andconcentration of disinfectant used, number of patients, handling,etc.) it is practically impossible to specify how often and/or long ameasuring prism can be used under safe conditions. The measuringprisms carry an expiry date ( YYYY-MM). They must not be usedbeyond this date. ZEISS recommends a maximum service life of twoyears before the expiration date. This service life applies undernormal conditions of use, i.e. when used in accordance with theinstructions contained in this user manual. The service life startswith the first use. The above periods do not apply for damagedmeasuring prisms; these should be replaced immediately.

First use Service life:maximum two years

First use replace

replace

Service life:maximum two years

Year

Fabrication

Figure 1: Overview of the service life of the measuring prisms

Addendum 3 Cleaning and disinfection of reusable measuring prismsInstructions for disinfection 3.1 Manual cleaning steps

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3 Cleaning and disinfection of reusablemeasuring prisms

CAUTION! Risk due to improper cleaning and disinfection

The disinfectant used must satisfy two criteria:

u For material compatibility reasons, only agents approved byZEISS may be used. The current material compatibility list canbe found on the ZEISS homepage and is included with thetonometer and the measuring prisms. Should the operatordecide to employ other disinfectants or procedures of his ownaccord, it must be ensured that the disinfection is notperformed with agents containing alcohol or acetone and isnever performed with UV radiation, steam or ethylene oxide.

u In terms of the disinfection performance, all disinfectants thatare approved for instrument disinfection and that have beentested for their efficacy against all nosocomially relevant infec-tious agents can generally be used as long as they also satisfythe material compatibility requirements outlined above. Theuser is responsible for selecting the correct disinfectant andemploying the correct concentration.

3.1 Manual cleaning stepsFor simple and safe disinfection, we recommend using containerswith holders for several measuring prisms. In the following,cleaning and disinfection using Desinset by HAAG-STREIT isdescribed. The use of other disinfection aids is at the user's ownrisk. Used instruments must be rinsed off after use before theresidues dry up.

Action 1. Remove the measuring prisms from the tonometer holder (a)and clean under running water (drinking water quality) (recom-mended time 60 seconds).

2. Clean the measuring body with a pH-neutral cleaning agentuntil no more dirt is visible.

3. The cleaning agent must then be rinsed off well under runningwater (drinking water quality)! (recommended time 60 seconds)(b).

4. Dry the measuring prisms with a lint-free disposable cloth (c).

5. Perform visual checks for cleanliness and perfect workingcondition.

6. Place the cleaned measuring prisms in the Desinset plastic tray(d).

3 Cleaning and disinfection of reusable measuring prisms AddendumInstructions for disinfection3.2 Disinfection steps

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3.2 Disinfection stepsWe recommend the use of a validated disinfectant (see chapterValidated cleaning and disinfecting agents [} 8]).

The operator accepts all liability for the use of other cleaningagents.

The maximum, material-compatible exposure time for the disin-fectant is 60 minutes.

Action 1. Take the measuring prisms to be disinfected out of the plastictray and place them on the lower tray (e) of a clean, disinfectedDesinset plastic insert. NOTE! The measuring prisms must not overlap.

2. Add at least 600 ml of disinfectant solution (f), so that thelower tray is completely immersed.

3. Place the disinfectant in one of the two Desinset measuringbeakers. WARNING! All measuring prisms must be completelyimmersed in the disinfectant solution. As the measuringprisms tend to float in the solution, they must always beplaced in the lower tray of the Desinset insert.

4. Allow the disinfectant sufficient time to work as specified in thedisinfectant manufacturer’s instructions (g). The maximum,material-compatible exposure time for the disinfectant is 60minutes.

5. Once the exposure time has expired, remove the plastic insertwith the measuring prisms, allow it to drip dry (h) and thenplace it in the other clean and disinfected measuring beaker.

The disinfectant must be replaced as follows:

• When visibly soiled.

• Once a day or as specified by the manufacturer.

3.3 Rinsing and storage

CAUTION! Risk due to contaminated or damaged measuring prisms

The patient may be injured by contaminated or damagedmeasuring prisms.

u Never use damaged measuring prisms!

u Only use clean, residue-free and undamaged measuring prisms.

u Prior to every use, the contact surface of the measuring prismmust be inspected for contaminants and damage (scratches,cracks or sharp edges). This must be performed with a slit lampmicroscope at a medium magnification (e.g. 12x or 16x).

Addendum 3 Cleaning and disinfection of reusable measuring prismsInstructions for disinfection 3.3 Rinsing and storage

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Action 1. Place the clean and disinfected funnel on the plastic insert.

2. Rinse the measuring beaker and its contents with drinking-water quality running water for at least 10 and at most 15minutes (i).

3. Remove the plastic insert with the measuring prisms (j) and drythe measuring prisms individually with a clean and sterile, soft,disposable cloth (k).

4. Store the cleaned and disinfected measuring prisms in thesealed and disinfected Desinset glass container (l) until theirnext use.

a b c d

fe hg

lkji

Figure 2: Steps for cleaning, disinfection and rinsing