NSK Osseo 100 Mode D'emploi page 4

10. Technical function
For bringing the measurement pin into vibration, short magnetic pulses are sent from the instrument tip. The magnetic pulses interact with the magnet inside the
measurement pin and cause the pin to vibrate. A pickup in the instrument picks up the alternating magnetic field from the vibrating magnet, calculate the
frequency and from that, the ISQ value.
11. Implant stability
An implant can have different stabilities in different directions. Make sure to measure from different directions around the top of the MulTipeg.
12. ISQ-value
The stability of the implant is presented as an "ISQ value". The higher the value, the more stable the implant. The ISQ is described in numerous clinical studies. A
list of studies can be ordered from the supplier.
13. Batteries & charging
The instrument contains 2 NiMH battery cells that have to be charged before use. A full charge take approximately 3 hours. From fully charged, the instrument can
measure continuously for 60 minutes before it needs to be recharged. The yellow LED is lit when the battery needs recharging. When the battery reaches a critical
level, the instrument shuts off automatically. When the batteries are charging, the blue LED is lit. When the charging is ready, the light goes off. The charger should
not be plugged in while measuring due to the risk of power line interference making it difficult to measure.
14. Usage
14.1 Instrument on/off
To turn the instrument on, press the operating key. A short beep should be heard and then all display segments are lit up for a short while. Check that all display
segments are lit.
The software version is then shown briefly before the instrument starts to measure. If any error code (EX, where "X" is the error number) is shown during start up,
please refer to the section "Troubleshooting".
To turn off, press and hold the operating key until the instrument turns off. The instrument will power down automatically after 1 minute of inactivity.
14.2 Measurement Osseo 100
A MulTipeg (fig 3) is mounted onto the implant by using the MulTipeg driver (fig 2). Use hand-tightening with 6-8 Ncm of tightening torque Turn on the instrument
and hold the tip close to the top of the pin (fig 5). When a signal is received, a buzzing sound is heard and then the ISQ-value is shown on the display for a short
while before the instrument starts to measure again.
If electromagnetic noise is present, the instrument cannot measure. The electromagnetic noise warning is audible as well as visible on the display. Try to remove
the source of the noise. The source could be any electric equipment close to the instrument.
15. Cleaning and maintenance
Before use, the parts should be cleaned and disinfected.
15.1 Recommended disinfectants
The following disinfectants are recommended for the instrument, the MulTipeg and the MulTipeg Driver:
Schülke & Mayr: Mikrozid AF Liquid
Dürr: AF 322
Metrex: CaviCide
Follow the instructions for use for the disinfectant that is used.
15.2 Autoclave sterilization (MulTipeg & MulTipeg Driver)
Sterilization should be made in a pre-vacuum steam sterilizer (autoclave) according to ISO 17665-1.
Clean the products and put them in an FDA-cleared (USA) autoclave bag before sterilization.
The following sterilization process shall be used:
At least 3 minutes at 134 (-1/+4)°C or 273(-1.6/+7.4)°F
Follow the instruction for the autoclave that is used.
Do not clean the MulTipeg by ultrasound. Could cause damage
The instrument must be used with a cover in all uses. (Only US)
The instrument must be cleaned with a disinfectant between patients.
15.3 Cleaning
Instrument
The instrument is cleaned with a wet cloth. Any of the above disinfectants can be used. For use in environments requiring sterility, the instrument should be
covered with a sterile cover. Recommended covers (US) are Probe Covers, for instance #DYNJE5900 by Medline or part #10040 by Medical Resources.
MulTipeg Driver and MulTipegs
The MulTipeg Driver and the MulTipeg should be cleaned with water with or without detergent, using a light brush. Any of the above disinfectant fluids can be
used. For use in environments requiring sterility, the MulTipeg Driver and MulTipeg should be autoclaved before use according to the above instructions.
16. Lifetime
Do not autoclave the instrument