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Stent delivery under direct visualization

  • US 10,278,849 B2
  • Filed: 09/18/2014
  • Issued: 05/07/2019
  • Est. Priority Date: 02/07/2008
  • Status: Active Grant
First Claim
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1. A tissue manipulation system, comprising:

  • a reconfigurable hood structure with a distal end, the hood structure having a low profile delivery configuration and an expanded deployed configuration which defines an open area bounded at least in part by the structure and by a membrane extending across the hood structure distal end, the open area in fluid communication with an environment external to the hood structure, wherein the membrane includes an aperture with an aperture diameter smaller than an outer lip diameter of the hood structure in the expanded deployed configuration;

    a fluid lumen in communication with the open area such that introduction of a fluid through the lumen purges the open area of blood;

    an inflatable balloon member translatable through the aperture in the membrane and distal to the open area, wherein the balloon member has a low profile delivery configuration in which the balloon member is sized to pass through the aperture in the membrane, an inflated configuration in which the balloon member has an expanded diameter greater than the aperture diameter, and a deflated configuration in which the balloon member is sized for retraction through the aperture; and

    an expandable stent positioned upon the balloon member, wherein the stent has an unexpanded configuration when positioned on the balloon member in the low profile delivery configuration, the unexpanded configuration of the stent sized to pass through the aperture in the membrane and wherein the stent has an expanded configuration when positioned on the balloon member in the inflated configuration, the expanded configuration of the stent having an expanded diameter greater than the aperture diameter.

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