Importance

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Abstract

A vascular access device and assembly characterized by a tubular access graft having at least one angled distal flange that forms a non-circular distal opening to the tubular access graft, with the angled distal flange having a reinforcement structure that expands the flange and abuts a luminal wall surface of a blood vessel. Optionally, an axial compression ring or cuff may be provided that concentrically engages the tubular access graft and is translatable into a position that abuts an abluminal wall surface of the blood vessel. Also optionally, the device and assembly may include an annular ring with a plurality of axially projecting tines arrayed about a circumference of the annular ring, the annular ring being adapted to evert upon engagement with vascular tissue and creation of an access open by either an arteriotomy or a venotomy. The plurality of tines are configured to engage vascular tissue and then rotate to a different axial orientation to evert the periphery of the access site. The plurality of tines may be used to couple a graft in an end-to-side anastomosis or be used without a graft to reinforce the access site and then allow for closure of the access site. The vascular access device and assembly is particularly useful in providing axillary artery access for introducing a medical device, such as a catheter based axial flow ventricular assist device, into and through the axillary artery and into the heart.

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First Claim