US 9,808,158 B2
Device and method for the non-invasive measurement of state of tension, biomechanical and viscoelastic properties of surfaces of soft biological tissues
Aleko Peipsi, Tallin (EE)
Assigned to MYOTON AS, Tallinn (EE)
Appl. No. 14/394,153
Filed by MYOTON AS, Tallinn (EE)
PCT Filed Apr. 12, 2013, PCT No. PCT/EP2013/057732
§ 371(c)(1), (2) Date Oct. 13, 2014,
PCT Pub. No. WO2013/156415, PCT Pub. Date Oct. 24, 2013.
Claims priority of provisional application 61/624,437, filed on Apr. 16, 2012.
Prior Publication US 2015/0038879 A1, Feb. 5, 2015
Int. Cl. A61B 5/00 (2006.01); B06B 1/04 (2006.01); A61B 9/00 (2006.01); G01N 3/317 (2006.01); A61B 90/00 (2016.01)
CPC A61B 5/0051 (2013.01) [A61B 5/442 (2013.01); A61B 9/00 (2013.01); B06B 1/04 (2013.01); G01N 3/317 (2013.01); A61B 2090/064 (2016.02); G01N 2203/0089 (2013.01); G01N 2203/0094 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A device for measurement of biomechanical and viscoelastic properties of skin of a soft biological tissue with elastic properties, the device comprising:
a housing including an actuator shaft provided with an actuator, and an accelerometer;
a testing end with a contact surface configured for adhering to a surface of the skin of the soft biological tissue, the testing end configured to be subjected to a mechanical force along an axis of movement of the testing end in a direction parallel to the surface of the skin by actuation of the actuator, the accelerometer being mounted to the actuator shaft so as to move along with the testing end, and arranged to record acceleration of the testing end, the testing end being shaped such that the contact surface extends in a plane that is parallel to the axis of movement of the testing end,
wherein the actuator is arranged to subject the testing end to a force such that the skin is subjected to a pre-set tension parallel to the axis of movement of the testing end, and then to apply a brief mechanical impulse parallel to the axis of movement of the testing end, while continuing to apply the pre-tension force, and wherein after the application of the brief mechanical impulse the resulting damped natural oscillation is recorded, as an acceleration curve, with data from the accelerometer; and
a signal processing unit for performing signal processing on the data from the accelerometer during the damped natural oscillation to obtain values of the biomechanical and viscoelastic properties of the skin.