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Device for maintaining patent paranasal sinus ostia

  • US 8,303,640 B2
  • Filed: 07/29/2008
  • Issued: 11/06/2012
  • Est. Priority Date: 07/30/2007
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a stent locatable in a sinus ostium when in an insertion state and conformable from the insertion state to a deployment state when located in the sinus ostium; and

    a device configured to deliver the stent into the sinus ostium, the device comprising;

    a handle including an actuation mechanism;

    a shaft having a proximal end and a distal end, wherein the shaft proximal end is coupled to the handle;

    a wire extending through the shaft having a proximal end and distal end, wherein the wire proximal end is operatively connected to the actuation mechanism;

    a first holding member coupled to the shaft distal end;

    a second holding member coupled to the wire distal end; and

    a longitudinally compressible, radially expanding elastomeric member coupled to the first holding member at a first end and to the second holding member at a second end, the longitudinally compressible, radially expanding elastomeric member including an elastomeric member having a radial thickness forming a through-bore in a longitudinal direction sized to slidingly receive the wire, the elastomeric member selectively compressible between the first end and the second end to expand a diameter of the longitudinally compressible, radially expanding elastomeric member, the stent being positionable around the elastomeric member of the longitudinally compressible, radially expanding elastomeric member, wherein actuation of the actuation mechanism in a first direction translates the second holding member toward the first holding member to compress the elastomeric member, which in turn acts to expand the diameter of the longitudinally compressible, radially expanding elastomeric member such that, when the stent is positioned around the elastomeric member of the longitudinally compressible, radially expanding elastomeric member, the stent expands to the deployment state and the elastomeric member is configured to shape the stent to impart an hourglass conformation, and wherein actuation of the actuation mechanism in a second direction translates the second holding member away from the first holding member to uncompress the elastomeric member, which in turn acts to contract the diameter of the longitudinally compressible, radially expanding elastomeric member such that, when the stent is positioned around the expansile solid of the longitudinally compressible, radially expanding elastomeric member, the stent in the deployment state is released from the insertion device.

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