Operation Manual

MyotonPRO User Manual
Page 106 of 108
Appendix 3 – Technical Specification
DEVICE TYPE AND MEASUREMENT METHOD
Device type
 Myometer for in vivo non-invasive measurement of soft
biological tissues
Measuring
method
 Based on exerting a damped mechanical oscillation of soft
biological tissue by
using an exterior, light, quick-release mechanical impulse under
constant pre-load.
Measurable
parameters
 State of tension:
- Natural oscillation frequency [Hz] - characterizing Tone or Tension
 Biomechanical properties:
- Logarithmic Decrement of natural oscillation – characterizing
Elasticity
- Dynamic Stiffness [N/m]
 Viscoelastic properties:
- Creep (Deborah number)
- Mechanical Stress Relaxation time [ms]
Precision of
parameters:
Coefficient of
Variation
 Natural oscillation frequency - 0,6%
 Logarithmic Decrement - 1.8%
 Dynamic Stiffness - 1.7%
 Mechanical Stress Relaxation time - 1.2%
 Creep - 1.5%
Raw signal
processing
 Based on proprietary algorithm
MEASUREMENT SYSTEM
Measuring
mechanism
 System of frictionless translation motion, driven by solenoid
actuator
Measurement
sensor
 3-axis Digital Acceleration Sensor,
 Measurement range ±8G, Resolution 11 bits,
 Sensitivity mg 13-bit;
 Sensitivity range due to temp. ±0.01%
Measurement
probe
 3 mm (diameter) polycarbonate probe
 Replaceable by user
Probe positioning
 Shock protected servo mechanism