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User instructions
Torque ratchets
FB-EV 065 GA Drehmomentratsche Rev. 3 (Version: 26.10.2020) |
(Translation: 26.10.2020)
Page 3 of 5
5.2
Cleaning and disinfection
Cleaning and disinfectant solutions with a pH value between 4.5 and 10 are to be used for cleaning – follow the manufacturer’s instructions
for these products (e.g. purpose, dosage, exposure time, etc.)
As a general rule, when storing parts for cleaning, care must be taken to ensure that they touch or lie on each other as little as possible to
avoid any areas being missed and so that the cleaning procedure can be performed as efficiently as possible.
5.2.1
Basics
For the cleaning and disinfection, a mechanised process should be used where possible (cleaning and disinfection unit). A manual process
– even using an ultrasonic bath – should only be used if there is no option of a mechanised process, as it is significantly less effective and
reproducible.
The preparation and pre-treatment described below must be carried out in both cases.
5.2.2
Preparation for decontamination
Heavy contamination must be removed from the implements directly after use (within 2 hours maximum).
Before being cleaned
(regardless of the selected cleaning method), the torque ratchet must be disassembled into its individual parts. This
can be done without tools. Only the adjusting nut must be completely removed. (see
Do not lose the plastic disc during this process, as this will impair the precision of the implement. (The plastic disc only needs to be removed
if there is visible contamination. The disc can be removed
if needed.
Push the disc back in after cleaning.)
Figure 3
5.2.3
Pre-treatment
5.2.3.1
Pre-treatment process
Pre-cleaning must always be performed regardless of the following cleaning method. Rinse the products under cold municipal water (drink-
ing water quality, <40°C) until all visible contamination has been removed. Any dirt still adhering to the product must be removed with a soft
brush. Hollow spaces and lumens must be intensively (>30 seconds) rinsed out using a water pistol (or similar) with cold municipal water
(drinking water quality <40°C).
5.2.4
Mechanical process – thermal disinfection
Evidence of the fundamental suitability of the implements for an effective mechanical cleaning and disinfection was provided by an inde-
pendent and accredited testing laboratory that is recognised by the ZLG
[Central Authority of the Länder for Health Protection with regard to
Medicinal Products and Medical Devices]
(§15 (5) MGP
[Medical Products Directive]
) under use of the Miele G7835 CD cleaning and disin-
fection unit (thermal disinfection, Miele & Cie. KG, Gütersloh) and the pre-cleaning and cleaning agents neodisher ® mediClean (Dr. Weigert
GmbH & Co. KG, Hamburg). For this, the procedure described above was used.
5.2.4.1
Cleaning and disinfection unit and media
When choosing a cleaning and disinfection unit, it should be ensured:
•
that the effectiveness of the unit has been verified (e.g.
DGHM
[German Association for Hygiene and Microbiology] or
FDA
[Food and Drug Admin-
istration] approval / clearance / registration or CE label in accordance with DIN EN ISO 15883),
•
that where possible a tested thermal disinfection programme (A
0
value > 3000 or – with older devices – at least 5 minutes at 90°C / 194°F) is used
(with chemical disinfection there is a risk of disinfecting agent residue on the implements),
•
that the programme used is suitable for the implements and has enough flush cycles,
•
that only demineralised water is used for rinsing,
•
that the air used to dry has been filtered (oil-free, low-microbiological contamination and particle-free) and,
•
that the cleaning and disinfection unit is regularly serviced and tested.
The materials, concentrations, temperatures and treatment times, as well as rinsing requirements, specified by the cleaning and disinfection
agent manufacturer must be adhered to at all times.
5.2.4.2
Mechanical cleaning / disinfection (→ RECOMMENDED)
Programme parameters used during certification (Programme: Des-Var-TD / Miele G7835 CD cleaning and disinfection unit):
•
The parts must be placed on a tray and put in the mobile injection unit (E450/1)
•
1 minute pre-cleaning
(cold municipal water, drinking water quality <40°C)
→ Drain water → 3 minutes pre
-cleaning
(cold municipal water, drinking water quality <40°C)
→ Drain
water
•
10 minutes cleaning at 55±5°C with 0.2% alkaline cleaning agent (0.2% Neodisher
®
MediClean) → Drain water
•
1 minute rinsing with demineralised water <40°C → Drain water → 2 minutes rinsing with demineralised water <40°C → Drain wate
r
•
Automatic disinfection > 5 minutes at 92±2°C with demineralised water.
•
Automatic drying process 90±2°C of the cleaning and disinfecting unit for at least 30 minutes (
≙
60±5°C in the washing compartment).
(Re-)preparation process:
•
Place the implements in the cleaning and disinfection unit. Make sure that the implements are not touching each other.
•
Start the programme.
•
When the programme ends, immediately remove the implements from the cleaning and disinfecting unit and ensure that they are dry enough before
packaging.
•
Inspect and package the implements as soon as possible after removing them from the unit.
5.2.4.3
Manual subsequent drying
If a manual subsequent drying is required, do so with a lint-free cloth and / or blow-out the lumens with sterile, oil-free pressurised air.
5.2.5
Manual process
Evidence of the fundamental suitability of the implements for an effective manual cleaning and disinfection was provided by an independent,
accredited and ZLG-recognised (§15 (5) MGP) testing laboratory under use of the cleaning and disinfection agents named below. For this,
the procedure described above was used.