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Stent for use following balloon angioplasty

  • US 4,795,458 A
  • Filed: 07/02/1987
  • Issued: 01/03/1989
  • Est. Priority Date: 07/02/1987
  • Status: Expired due to Term
First Claim
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1. A stent for implanting in a blood vessel following balloon angioplasty to prevent restonosis, said stent consisting of a helical coil of marmem alloy tape or wire having a diameter less than that of the blood vessel in which it is to be implanted, said tape or wire having earlier been wound to form a helical coil having a diameter equal to or greater than the inside diameter of said blood vessel and heated to an elevated temperature for a time to fix the shape of the second mentioned helical coil in the memory of the alloy and then covered with a thin surface coating of tin.

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