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Cannula Systems and Methods

  • US 20120059213A1
  • Filed: 09/07/2011
  • Published: 03/08/2012
  • Est. Priority Date: 09/07/2010
  • Status: Active Grant
First Claim
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1. A cannula system to direct the flow of material from a chamber of an organ via a wall of the organ, comprisinga hollow retention member having a proximal end, a distal end, an outer surface, and a lumen extending between the proximal end and the distal end, the distal end being expandable between a first configuration and a second configuration in which the perimeter of the outer surface of the distal end is larger than the perimeter of the outer surface of the proximal end;

  • an elongate tubular member having a distal end with a distal opening, a proximal end with a proximal opening, and a lumen extending therebetween, the distal end of the tubular member configured to cooperate with one or both of the retention member and the organ wall to trap the outer surface of the retention member to the chamber side of the organ wall with the lumen of the tubular member in fluid communication with the lumen of the retention member; and

    at least one retaining element configured to anchor one or both of (a) at least a portion of the outer surface of the hollow retention member to the chamber side of the organ wall and (b) the tubular member to the organ wall outside the chamber.

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