Device for treatments with endoscopic resection/removal of tissues

A device (1) for treatments of endoscopic resection/removal of tissues, comprising:

• a handpiece (2) able to be handled by a user;
• an outer tubular element (3) which extends along a longitudinal axis (X-X) comprising a proximal end, a distal end and a cutting aperture, placed at said distal end;
• an inner tubular element (4) able to be housed in a rotary way in said inner tubular element (3);
• said inner tubular element extending along a longitudinal axis (X-X) and comprising a proximal end, a distal end and a cutting tip at its distal end;
• guiding means (5) to rotate and/or oscillate said inner tubular element (4) with respect to said outer tubular element (3);
• said guiding means comprising an electric motor and electric supply means (20) for said electric motor (19);
• characterized in that it comprises:
• a first engagement (7) which is keyed on the inner tubular element (4) substantially at its proximal end of the inner tubular element;
• a second engagement (8) which is keyed on the distal end of the outlet shaft (17) of the motor, in order to axially slide on the outlet shaft (17) of the motor;
• said second engagement (8) being shaped in order to couple with said first engagement (7), to drag in a rotary way said inner tubular element (4);
• at least one spring element (18) in order to push said second engagement (8) in engagement with said first engagement (7).