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Device for the treatment of constricted ducts in human bodies

  • US 5,246,445 A
  • Filed: 01/24/1992
  • Issued: 09/21/1993
  • Est. Priority Date: 04/19/1990
  • Status: Expired due to Term
First Claim
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1. A medical device for opening constrictions in conduits in the body of humans or animals, comprising a spatial spiral of elongate axial extension wound of thin wire and having attachment means at each distal end, to hold the spiral when wound in a constricted condition and to permit self-expansion when the attachment means are released, wherein at one or more locations intermediary of the two ends of the spiral the diameter of the spiral is greater than the major part of the windings, such that at each such location a circumferential bulge of the otherwise cylindrical shape of the device is created.

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