Patent ID: 7913366

Claim:
A manufacturing method for an ultrasonic probe in which a plurality of piezoelectric elements are arrayed in a two dimensional direction on a fixing base, and lead wires from a lower surface of each of said piezoelectric elements, are inserted into said fixing base and electrically connected and led out, said method comprising the steps: (i) forming a plurality of unit fixing plates, such that each said unit fixing plate has an opening portion passing through a plate surface and has grooves provided adjacent one another and in parallel in a vertical direction of said plate surface and substantially orthogonal to said opening portion; (ii) laminating said unit fixing plates to one another to form a fixing base; (iii) inserting said lead wires into said grooves in said fixing base comprising said laminated unit fixing plates; (iv) partially cutting away and smoothing both principal surfaces of said fixing base and exposing said lead wires; (v) fixing a piezoelectric plate to one principal surface of said fixing base; and (vi) cutting out, between said lead wires in a one dimension direction and a two dimension direction, to divide up said piezoelectric plate and said fixing base into a plurality of piezoelectric elements.