Abstract: A surgical instrument including an operative assembly (1) and a supply assembly (3). The back of the operative assembly (1) and the front of the supply assembly (3) have complementary connectors forming a sealed connection between the assemblies. The supply assembly (3) comprises at least one duct (43) for feeding a first fluid as far as the connectors. The surgical instrument is characterized in that it comprises a member (31) for sealing the fluid duct (43) when the operative assembly (1) is connected to the supply assembly (3), and the operative assembly (1) includes a member (25) for feeding at least one second fluid.

Abstract: A surgical knife comprising an ultrasonic generator (3) for ultrasonically vibrating an electrode or sonotrode (9) arranged at the front end of the knife and provided with an axial suction bore (19, 21). The surgical knife is characterized in that its back end comprises a member (31) for guiding a laser beam through the axial suction bore (19, 21) and onto a focal point (A) located beyond the front end of the sonotrode (9).

Abstract: Ultrasound apparatus intended for the curettage or exeresis of biological tissues by irrigation of a liquid subject to cavitation and by suction of the disaggregated tissues, the apparatus comprising a hand-piece containing a transducer which is mechanically coupled to a vibrating instrument or sonotrode. Said apparatus is characterized in that the handpiece (1) is traversed in the longitudinal direction by a section conduit (15,24) connected on the one hand to a suction connector (3) provided at the backend of the end piece (1), and one the other hand to the internal part of the suction sonotrode (17).