| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a venous drainage cannula having a new constitution. <P>SOLUTION: A kink-resistant venous return cannula has enhanced drainage for minimally invasive surgeries involving vacuum-assisted venous drainage. In one aspect of this invention, this cannula is provided with an elongated, flexible tubular body having a proximal end and a distal tip. A distal drainage segment adjacent the distal tip has at least one drainage hole penetrating through the tubular body, and a first axial length. A first strengthened segment, or a first reinforced segment, is located proximal to the distal drainage segment and has a second axial length. A first atrial suction segment with a plurality of drainage holes therein is located proximal to the first strengthened segment and has a third axial length. <P>COPYRIGHT: (C)2009,JPO&INPIT |
