| US 7,578,789 B2 | ||
| Device and method for measuring the elasticity of a human or animal organ | ||
| Laurent Sandrin, L'Hay-les-Roses (France); and Jean-Michel Hasquenoph, Couilly-Pont-aux-Dames (France) | ||
| Assigned to Echosens, (France) | ||
| Filed on Feb. 02, 2005, as Appl. No. 11/49,400. | ||
| Application 11/049400 is a continuation of application No. PCT/FR03/02243, filed on Jul. 16, 2003. | ||
| Claims priority of application No. 02 10104 (FR), filed on Aug. 08, 2002. | ||
| Prior Publication US 2005/0203398 A1, Sep. 15, 2005 | ||
| Int. Cl. A61B 8/00 (2006.01) | ||
| U.S. Cl. 600—438 [73/573] | 27 Claims |
| 1. A device for measuring elasticity of a human or animal organ or viscoelastic media having an ultrasonic signal after being
subjected to ultrasonic impulses comprising:
at least one sensor comprising an ultrasonic transducer,
at least one position sensor,
an actuator to trigger the device connected by wire link to an electric power source,
a controlled electrodynamic actuator attached to the ultrasonic transducer that generates a transitory low-frequency impulse
having a frequency range between about 1 Hz and about 5000 Hz and results in a low-frequency vibration or stress that is controlled
in time and amplitude and allows an operator to apply pressure to the organ, and
a computer configured to calculate velocities of tissue deformations.
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