US 11,864,775 B2
Device for assessing the solidity of a material
Guillaume Haiat, Rungis (FR); and Alexis Hubert, Alfortville (FR)
Assigned to Centre National de la Recherche Scientifique, Paris (FR); and Université Paris XII Val de Marne, Creteil (FR)
Appl. No. 17/263,392
Filed by Centre National de la Recherche Scientifique, Paris (FR); and Université Paris XII Val de Marne, Creteil (FR)
PCT Filed Jul. 25, 2019, PCT No. PCT/EP2019/070131
§ 371(c)(1), (2) Date Jan. 26, 2021,
PCT Pub. No. WO2020/021046, PCT Pub. Date Jan. 30, 2020.
Claims priority of application No. 1856960 (FR), filed on Jul. 26, 2018.
Prior Publication US 2021/0161576 A1, Jun. 3, 2021
Int. Cl. A61B 17/16 (2006.01); A61B 17/92 (2006.01); G01N 3/34 (2006.01); A61B 90/00 (2016.01); A61B 5/00 (2006.01); G01N 3/30 (2006.01)
CPC A61B 17/1604 (2013.01) [A61B 5/4504 (2013.01); A61B 5/4509 (2013.01); A61B 5/4514 (2013.01); A61B 17/92 (2013.01); G01N 3/30 (2013.01); G01N 3/34 (2013.01); A61B 2090/064 (2016.02); A61B 2562/0252 (2013.01); G01N 2203/0039 (2013.01); G01N 2203/0076 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A device for assessing a solidity of a material comprising:
ancillary tool having opposite first and second ends, the second end being in the form of a point or blade,
an impactor suitable for striking the first end of the ancillary tool,
at least one sensor, and
a processing unit,
wherein the ancillary tool is adapted for being placed between a material and the impactor, with its second end in contact with the material, and for transmitting an impact force generated by the impactor to the material,
wherein the sensor is capable of measuring a quantity from among the impact force generated and a deformation of the impactor, and of supplying a measurement signal representing a variation in time of said quantity upon an impact,
wherein the processing unit is adapted for calculating, from the measurement signal, an indicator representative of the solidity of the material, and
wherein the indicator corresponds to the duration of a time window, a start of this time window being defined with respect to an instant corresponding to a first peak of maximum amplitude of the measurement signal and an end of this time window being defined with respect to an instant corresponding to a second peak of maximum amplitude of the measurement signal.