Patent ID: 9486235
Filing Date: 2016-11-08
CPC Classification: A61B

Claim Text:
1. A system employing an elongated cantilevered beam having proximal and distal ends, with the distal end adapted to be inserted into a body passage so that it engages target tissues to produce therapeutic effects on the tissues, comprising: piezoelectric material fixed to a surface of the beam adjacent to the proximal end of the beam; an electrical excitation system connected to the piezoelectric material, adapted to apply reciprocating currents to the material to produce deformations of the beam; a piezoelectric sensor for detecting an amplitude of deformation of the beam, and wherein the sensor is connected to said excitation system to determine degree of engagement of the beam with the target tissues and to modify the excitation of the piezoelectric material to control the engagement of the beam with the target tissues; and further comprising a blocking mass from which the beam is cantilevered, wherein the blocking mass is made of high elastic modulus material and is disposed to reflect energy back towards the distal end of the beam and prevent energy from spreading to the proximal end of the beam.