The embodiments of the probe or the probe handle additionally include an integrally formed cooling structure with at least one dividing wall that is connected to an outer wall and an inner wall of the probe. The outer wall and the inner wall of the probe together form a medium flow space inside the probe, and the dividing wall divides the medium flow space into a continuous medium flow path where a predetermined medium travels to carry undesirable heat away from the probe handle. The undesirable heat is generated from electronic components and or an array of transducer elements in the probe handle.
