Patent ID: 6736784
Filing Date: 2004-05-18
Classification: A61B,G10K

Abstract:
A medical instrument for treating biological tissue, the instrument comprising a housing (2), a pressure wave generation means (4) and a transmission means (8) for coupling the unfocused pressure waves into the body of living beings, wherein the transmission means (8) comprises a pressure chamber (12) having an inlet end and an outlet end, the pressure chamber (12) containing a liquid (14) into which the pressure waves from the pressure wave generation means (4) can be coupled, which pressure waves can be transmitted from the outlet end of the pressure chamber (12) to the biological tissue, wherein the pressure waves transmitted by the liquid can be unfocusedly coupled into the biological tissue, characterized in that at the outlet end of the pressure chamber (12) a membrane (16) is arranged, the pressure chamber (12) comprises a duct in which a transmission element (30) linearly guided in axial direction is elastically supported, the transmission element (30) is coupled at an exit interface (32) to the liquid (14) in the pressure chamber (12), and the transmission element (30) is energized by a linearly reciprocating beater part (40) which, as a result of the impulse, mechanically induces a pressure wave.