Patent ID: 8308715

Claim:
An apparatus for stabilizing a cannula to a vascular structure, the apparatus comprising: (i) a ring adapted to circumferentially surround and be in slidable relation with the cannula; (ii) three or more struts coupled to the ring, each of the three or more struts having a distal end that extends distally and outwardly away from the ring by a first angle relative to a first axis that is parallel to a lengthwise central axis of the cannula; (iii) a contact pad coupled to and extending from the distal end of each of the three or more struts, wherein each contact pad extends away from the respective distal end by a second angle relative to the first axis, the second angle being greater than the first angle; and (iv) three or more arms coupled to the ring, each of the three or more arms extending proximally and inwardly away from the ring by a third angle relative to the first axis, wherein each of the three or more arms directly opposes a respective one of the three or more struts, wherein the contact pads, when engaging a wall of the vascular structure, are configured to radially outwardly deflect the three or more struts and radially inwardly deflect the three or more arms at an inward angle beyond the third angle to engage the arms into an outer wall of the cannula and thereby prevent axial movement of the apparatus relative to the cannula and thereby stabilize the cannula relative to the wall.