A therapeutic applicator for ultrasound.

摘要

In a therapeutic applicator for the administration of ultrasound a piezoelectric crystal (56) is connectable through a conventional three-wave washer (53) to an electrical power source. The washer (53) is sandwiched between the crystal (56) and a circuit board (46) to which it is attached at one spot on its side towards the board (46). The convolutions on the opposite side of the washer (53) define a plurality of radially equispaced zones for electrical contact with an electrode on the crystal. The contacts are displacable radially outwardly with respect to the point of attachment under dynamic load. A simple but effective and consistent electrical connection is established for an applicator which is easy to assemble.