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Exclusion of the left atrial appendage

  • US 9,486,225 B2
  • Filed: 12/22/2005
  • Issued: 11/08/2016
  • Est. Priority Date: 12/22/2005
  • Status: Active Grant
First Claim
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1. A device for excluding the left atrial appendage (LAA), comprising:

  • a first member having first and second ends adapted to extend from one side of the LAA to the other and to contact the LAA on a selected side thereof adjacent the heart;

    a second member having first and second ends adapted to extend from one side of the LAA to the other and to contact the LAA on the other side thereof adjacent the heart;

    the first and second ends of the first and second members lying in a first plane;

    a hinge that connects the second ends of the first and second members, the hinge being generally U-shaped and constituting an integral extension of the second ends of the first and second members to establish a structure that is closed at the second ends of the first and second members and open at the first ends of the first and second members when the first and second members are in a first, open position;

    the first and second members being generally arc-shaped when viewed from above and lying in a second plane that is generally orthogonal to the first plane;

    the first ends of the first and second members being movable in the first plane from the first, open position in which the LAA can fit therebetween to a second, closed position in which the first and second members are disposed generally parallel with each other and are sufficiently close to each other to compress the LAA between them without causing the development of necrotic tissue;

    an interlock that connects the first ends of the first and second members to maintain the first and second members in a fixed position relative to each other when the first and second members are in the second, closed position;

    those portions of the first and second members that contact the LAA being configured to minimize stress concentrations in the LAA, said portions being substantially round in cross-section; and

    a flexible cover for the first and second members and the hinge, the cover being biocompatible with the LAA, the cover not extending beyond the first ends of the first and second members such that the device, when provided with the flexible cover, remains open at the first ends of the first and second members when the first and second members are in the first, open position and the interlock is exposed.

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