Abstract: A stretchable-diameter inserter, for hemodynamic studies and related operations, is characterized in that it comprises an inserter tube, a hemostatic valve designed for preventing blood from exiting the patient toward the operator, a side line including a faucet, adapted to be used for performing blood taking and infusion operations and two dilatators: a first dilatator having a smaller cross-section and a second dilatator having a larger cross-section.

Abstract: A variable diameter tube for use in a vessel inserter for performing hemodynamics researches and related operations comprises two coupled different-characteristic materials which are coupled to one another to provide a single stretchable tube assembly.

Abstract: A stretchable-diameter inserter, for hemodynamic studies and related operations, is characterized in that it comprises an inserter tube, a hemostatic valve designed for preventing blood from exiting the patient toward the operator, a side line including a faucet, adapted to be used for performing blood taking and infusion operations and two dilatators: a first dilatator having a smaller cross-section and a second dilatator having a larger cross-section.

Abstract: A stretchable-diameter inserter, for hemodynamic studies and related operations, is characterized in that it comprises an inserter tube, a hemostatic valve designed for preventing blood from exiting the patient toward the operator, a side line including a faucet, adapted to be used for performing blood taking and infusion operations and two dilatators: a first dilatator having a smaller cross-section and a second dilatator having a larger cross-section.

Abstract: A plastics material variable diameter tubular structure for a biomedical use has a diameter which increases as the structure is subjected to an inner force, and returns to a starting diameter in a rest condition of the structure, the tubular structure being advantageously used for making a body of a vascular introducer device.

Abstract: A stretchable-diameter inserter, for hemodynamic studies and related operations, is characterized in that it comprises an inserter tube, a hemostatic valve designed for preventing blood from exiting the patient toward the operator, a side line including a faucet, adapted to be used for performing blood taking and infusion operations and two dilatators: a first dilatator having a smaller cross-section and a second dilatator having a larger cross-section.

Abstract: A variable diameter tube for use in a vessel inserter for performing hemodynamics researches and related operations comprises two coupled different-characteristic materials which are coupled to one another to provide a single stretchable tube assembly.

Abstract: An apparatus for performing myocardial revascularization in a beating heart and left ventricular assistance condition comprises an arterial cannula, of a per se known type, arranged in the descending aorta, a novel arterial draining cannula, of a two cannula stage type, so arranged that the draining occurs from the left auricle and left ventricle, and a centrifugal pump allowing blood flow from the left ventricle to the aorta. The apparatus allow the patients to be operated on with the safety of a conventional extra-corporeal circulation and with a risk and cost reduction due to the off-pump technique.

Abstract: An apparatus for performing an aortal valvular surgery intervention on a beating heart comprises an outer mechanical circuit including a biopump and an infusion aortal cannula and being characterized in that it further comprises a left atrial cannula adapted to occlude the mitral valve so as to directly convey oxygened blood through a raising aorta by the outer mechanical circuit, thereby allowing to perform a cross aortotomy for exposing the aortic valve to operate thereon in an “open sky” manner.