Abstract: A powered handpiece for imparting to a cannula of a medical device a reciprocal movement of amplitude (?x) along a longitudinal axis (X) is provided. A housing (1) at least partially encloses a hollow tube (2) extending along the longitudinal axis (X) between an inlet end (2i) and an outlet end (2o), the inlet end (2i) being configured for coaxially coupling the hollow tube (2) to a hollow cannula (10). A ring (3) rigidly is coupled to the hollow tube (2) and has an opening (3o) defined on a plane (X, Y), having a length, L, Y?X. A cam (4) mounted on a rotation axle (4r) parallel to a second transverse axis (Z) normal to the plane (X, Y) (i.e., X?Y?Z), offset from a centroid (C) of the cam on the plane (X, Y) by a distance (?P), and set at a fixed position relative to the housing (1), the cam being engaged in the opening (3o).

Abstract: A powered handpiece for imparting to a cannula of a medical device a reciprocal movement of amplitude (?x) along a longitudinal axis (X) is provided. A housing (1) at least partially encloses a hollow tube (2) extending along the longitudinal axis (X) between an inlet end (2i) and an outlet end (2o), the inlet end (2i) being configured for coaxially coupling the hollow tube (2) to a hollow cannula (10). A ring (3) rigidly is coupled to the hollow tube (2) and has an opening (3o) defined on a plane (X, Y), having a length, L, Y ?X. A cam (4) mounted on a rotation axle (4r) parallel to a second transverse axis (Z) normal to the plane (X, Y) (i.e., X ?Y ?Z), offset from a centroid (C) of the cam on the plane (X, Y) by a distance (?P), and set at a fixed position relative to the housing (1), the cam being engaged in the opening (3o).