The MMC-140 A/P Coil is designed for advanced clinical studies where double blinded research experiments are required.
The coil functions both as an active (A) coil and as a placebo (P) coil.
The coil has a symmetrical mechanical design and no labeling on the coil indicates the active or placebo side. Consequently, it is not possible for the operator to see or hear which side is used.
Built-in orientation switch to determine which side the operator shall direct towards the patient.
The coil is parabolic in shape to provide a powerful and focused stimulation.
To simulate stimulation on the placebo side a built-in vibrator generates mechanical vibrations synchronous with the stimulation pulse.
The use of all our A/P coils requires the Research Software USB-less to be installed on the MagPro.
Mechanical Properties
Weight of transducer head: 1.4 kg
Dimensions of transducer head: ø145x95 mm
Convex shape: Radius 109 mm
Cable length: 2.5 m
Coil Winding Data
Inner diameter: 25 mm
Outer diameter: 120 mm
Winding height: 6 mm
Number of windings: 14
Magnetic and Electrical Properties
Max initial dB/dt 17.8 kT/s near the coil surface on the active side. The magnetic field near the coil surface on the placebo side is reduced to <5% of the active side.
Mean output - amplitude limited to max 45%
Active pulse width 280µs (Biphasic)
Performance
Number of stimulations before warm-up at ambient temperature 20°C at 1 pps: 1,000 pulses
Number of stimulations before warm-up at ambient temperature 20°C at 2 pps: 500 pulses.