Patent ID: 8834377
Filing Date: 2014-09-16
Classification: A61B,B06B

Abstract:
1. An ultrasonic probe comprising: a piezoelectric element; a first electrode layer formed on one side of said piezoelectric element; at least one conductive acoustic matching layer layered via an adhesive layer on said first electrode layer; a first film layered via an adhesive layer on said at least one conductive acoustic matching layer, an electrode pattern being formed on an adhesive layer side of said first film; a second electrode layer formed on the other side of said piezoelectric element; and a second film layered via an adhesive layer on said second electrode layer, an electrode pattern being formed on an adhesive layer side of said second film; wherein: graphite powder is uniformly distributed in at least one of said adhesive layers, a thickness of the adhesive layer on the first electrode layer is non-constant, such that in at least one position, the first electrode layer and the conductive acoustic matching layer are in contact and in another position, the first electrode layer and the conductive acoustic matching layer are spaced a distance apart from each other, in the position in which the first electrode layer and the conductive acoustic matching layer are spaced apart, a recess is formed between the first electrode layer and the conductive acoustic matching layer, and the graphite powder is disposed in the recess between the first electrode layer and the conductive acoustic matching layer, such that the first electrode layer is electrically connected to the conductive acoustic matching layer through the graphite powder.