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Multi-stage occlusion devices

  • US 9,023,074 B2
  • Filed: 05/01/2012
  • Issued: 05/05/2015
  • Est. Priority Date: 10/15/2010
  • Status: Active Grant
First Claim
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1. An occlusion device comprising:

  • a first support frame comprising a first disc-shaped member and a first crossbar, the first disc-shaped member having an outer edge and defining a closed circumference with a central opening, the first disc-shaped member including a first coil defining a first passageway and a first core wire extending through the first passageway, the first crossbar attached to the first disc-shaped member and extending across the central opening and including a second coil defining a second passageway and a second core wire extending through the second passageway;

    a first covering attached to the first disc-shaped member and extending across the central opening of the first disc-shaped member;

    a second support frame attached to the first support frame and comprising a second disc-shaped member and a second crossbar, the second disc-shaped member having an outer edge and defining a closed circumference with a central opening, the second disc-shaped member including a third coil defining a third passageway and a third core wire extending through the third passageway, the second crossbar attached to the second disc-shaped member and extending across the central opening and including a fourth coil defining a fourth passageway and a fourth core wire extending through the fourth passageway; and

    a second covering attached to the second disc-shaped member and extending across the central opening of the second disc-shaped member;

    wherein the first core wire comprises a first portion of a common core wire;

    wherein the third core wire comprises a second portion of the common core wire;

    wherein the common core wire passes through the first passageway and the third passageway and from the first support frame to the second support frame to attach the second support frame to the first support frame;

    wherein the first coil comprises a first outer diameter, the second coil comprises a second outer diameter, the third coil comprises a third outer diameter, and the fourth coil comprises a fourth outer diameter;

    wherein the second outer diameter is greater than the first outer diameter; and

    wherein the fourth outer diameter is greater than the third outer diameter.

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