Patent ID: 6261298
Filing Date: 2001-07-17
Classification: A61B,B06B

Abstract:
Device for concrement destruction or crushing, comprisingan elongate probe (1) adapted to be introduced into the human body,a drive unit that accelerates an impact body (2), anda lever unit (4) comprising at least one single-arm lever which is supported for rotation about an axis of rotation (5) in such a way that it bears, in its home position, on the proximal end surface (11) of the probe in particular, and which is rotated by the hitting impact body such that the lever accelerates the probe, which bears against it, and the probe performs a translational movement causing the destruction or crushing of the concrement by the distal end surface (12) of the probe hitting thereon,characterised in that the distance (r.sub.3) of the centre of the bearing surface of said lever in its home position on the proximal end surface (11) of the probe (1) from said axis of rotation (5) is shorter and particularly distinctly shorter than the distance (r.sub.1) of the centre of the impact area of said impact body on the lever from said axis of rotation (5), andthat the ratio of said distances r.sub.1 and r.sub.3 is so selected that the probe will reach maximum translational speed.