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Systems for anchoring a medical device in a body lumen

  • US 8,998,932 B2
  • Filed: 06/18/2012
  • Issued: 04/07/2015
  • Est. Priority Date: 12/31/2002
  • Status: Expired due to Fees
First Claim
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1. A system for anchoring a device, comprising:

  • a sheath having a plurality of side openings;

    a rotatable element disposed within the sheath; and

    at least two projections extending radially from and attached to the rotatable element, wherein rotation of the rotatable element with respect to the sheath advances the distal ends of the projections radially outwardly through the openings, one of the two projections being distal the other of the two projections,wherein the at least two projections are formed from a shape memory material, and wherein the at least two projections spring radially outwardly as they pass outwardly through the side opening as the rotatable element is rotated with respect to the sheath when the at least two projections are exposed to a temperature change.

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