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Balloon catheter with dynamic vessel engaging member

  • US 10,286,190 B2
  • Filed: 12/10/2014
  • Issued: 05/14/2019
  • Est. Priority Date: 12/11/2013
  • Status: Active Grant
First Claim
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1. A catheter, comprising:

  • an elongate shaft having a proximal end, a distal end, a main body extending between the proximal end and the distal end, and a longitudinal axis, the main body defining an inflation lumen;

    a balloon disposed on the distal end of the elongate shaft, the balloon having an external surface, a proximal balloon neck and a distal balloon neck, the balloon defining an interior chamber in fluid communication with the inflation lumen and adapted to move from an uninflated configuration to an inflated configuration as fluid moves from the inflation lumen into the interior chamber;

    a guide disposed on the external surface of the balloon between the proximal balloon neck and the distal balloon neck with respect to the longitudinal axis of the elongate tubular member, the guide comprising a groove defined by the external surface of the balloon in both the inflated configuration and uninflated configuration; and

    an engaging member having an engaging member proximal end and an engaging member distal end, the engaging member proximal end disposed proximal to the proximal balloon neck, the engaging member distal end releasably secured by the guide such that the guide maintains the engaging member distal end adjacent the external surface of the balloon when the balloon is in an uninflated configuration but releases the engaging member distal end as the balloon moves from an uninflated configuration to an inflated configuration;

    wherein the engaging member comprises a cannula defining an engaging member passageway; and

    wherein the groove extends from the external surface of the balloon toward the interior chamber.

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