| 摘要 |
<p>The present invention refers to a cannula, in particular aortic. In an embodiment the aortic cannula comprises a tubular tip (1), suitable to be inserted into an aorta, characterised in that said tubular tip (1) comprises at least a first circumferential portion, made up of deformable material (3), and at least a second circumferential portion, made up of non deformable material (2), that extend longitudinally starting from the final end of said tubular tip (1), said second circumferential portion (2) being placed adjacent to the aorta wall, on the same side of the surgically made slit, through which the tubular tip (1) is inserted in the aorta, so that, while a first fluid is introduced into said aorta through said cannula, said portion of deformable material (3) stretches out so as to favour the flow of said first fluid and, while a second fluid is supplied by the heart, said portion of deformable material (3) deforms thus reducing the section of said tubular tip (1) so as to favour the flow of said second fluid.</p> |
