Patent ID: 7833162
Filing Date: 2010-11-16
Classification: A61B

Abstract:
1. An ultrasonic probe, comprising: a probe chassis comprising an insertion portion and a grip portion formed integrally with each other; a barrier layer on an internal wall surface of the sound window; a pipe disposed inside the probe chassis from the insertion portion to the grip portion, in communication to an area enclosed by the sound window; an elastic reserve tank having a wall disposed inside the probe chassis at the grip portion, in communication with the pipe; and a charged sound propagation liquid in an area enclosed by the sound window, in the pipe and inside the elastic reserve tank; wherein the wall of the elastic reserve tank is separate from the internal wall of the probe chassis at the grip portion; and the elastic reserve tank absorbs changes of pressure of the charged sound propagation liquid in the area enclosed by the sound window to maintain the pressure within and shape of the sound window.