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Embolic coils with offset helical and twisted helical shapes

  • US 5,639,277 A
  • Filed: 09/29/1995
  • Issued: 06/17/1997
  • Est. Priority Date: 04/28/1995
  • Status: Expired due to Term
First Claim
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1. A flexible, vaso-occlusive device for placement in a vascular lumen comprising a helically wound coil having two primary coil ends and a primary diameter, said helically wound coil being further wound into a relaxed secondary coil configuration end wherein the relaxed secondary coil configuration comprises at least two longitudinal focal axes generally parallel to each other extending between said first secondary coil end and said second secondary coil end wherein at least one loop of said helically wound coil extends radially and independently about each of said at least two longitudinal focal axes forming said relaxed secondary coil configuration.

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