Surgical instrument equipment appropriate for mini-invasive surgery for access through natural orifices or incisions, comprising a device for access to the interior of the patient including a rigid ring wherefrom emerge at least two prolongations in the distal direction which function as separators and a multivalve flexible head which, in use, is disposed surrounding the external face of said rigid ring and which comprises at least one operating conduit channel for access by at least one operating instrument, a connector for insufflation and irrigation with fluids, and a fluid retention funnel encircling said multivalve flexible head surrounding the rigid ring, defining in the assembly thereof a passage for said operating instrument that is arranged within at least one conduit channel and is in turn formed by a forceps grip, a means of transmission of movements comprising an external tubular sheath, an actuating mandrel and a forceps head which includes an intrahead device.
