Biomechanical sensor to analyze the viscoelastic properties of biological tissues

Generally, breast tumors are much stiffer than the surrounding tissue. The strain stress curves are common to the tissue characterization. Conventional system uses a dynamic and static deformation with controlled amplitude. In this work, we present a new deformation system which the displacement amplitude is dependent on the mechanical properties of the sample. This system is composed by a modified loudspeaker. A dedicated magnetic sensor is used to register the deformation amplitude. The variation in the load is also registered using a sensitivity load cell.