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Occlusion devices and methods

  • US 8,733,361 B2
  • Filed: 11/19/2012
  • Issued: 05/27/2014
  • Est. Priority Date: 06/07/1995
  • Status: Expired due to Fees
First Claim
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1. A contraceptive device comprising:

  • a resilient primary coil, when in a relaxed state, comprising;

    a proximal anchor of the primary coil bent into a proximal secondary loop having a proximal cross-section;

    a distal anchor of the primary coil bent into a distal secondary loop having a distal cross-section; and

    a lumen-traversing region of the primary coil extending between the proximal anchor and the distal anchor, the lumen traversing region of the primary coil having a cross-section which is smaller than both the proximal cross-section and the distal cross-section.

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