4
9. 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.
10. Implant stability
An implant can have different stabilities in different directions. Make sure to measure from different directions around the top of the
MulTipeg.
11. 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.
12. 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. The charger should not be plugged in while measuring due to the risk of power line interference making it
difficult to measure.
13. Usage
13.1 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.
13.2 Measurement
A MulTipeg is mounted onto the implant by using the MulTipeg driver. Use hand-tightening (6-8 Ncm) of tightening force. 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.
14. Cleaning and maintenance
14.1 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.
14.2 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 autoclave bag before sterilization.
The following sterilization process shall be used:
The instrument emits short magnetic pulses with pulse duration of 1 ms and strength of +/- 20 gauss, 10 mm
from the instrument tip. Precautions might be necessary when using the instrument close to cardiac
pacemakers or other equipment sensitive to magnetic fields.
Before first use, the parts should be cleaned and disinfected.