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Balloon catheter with intrinsic introducer for percutaneous insertion into a blood vessel over a guide wire, and method of use

  • US 4,540,404 A
  • Filed: 01/19/1983
  • Issued: 09/10/1985
  • Est. Priority Date: 01/19/1983
  • Status: Expired due to Fees
First Claim
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1. A balloon catheter comprisinga tip having a tapered distal end,a central lumen extending longitudinally of said catheter,a balloon membrane coaxial with and surrounding said central lumen and having its distal end connected to said tip,a sheath slidable over said balloon to form an assembly,a guide wire slidable through said central lumen and insertable into a blood vessel for guiding said tip, membrane and sheath to a location within said blood vessel selected for therapy,said sheath fitting loosely over said balloon, whereby said sheath can be withdrawn along the balloon catheter to expose said balloon at said location and said balloon can then be inflated to provide therapy, andwrapping means connected to said central lumen whereby said central lumen is rotatable about its axis to unwrap said balloon membrane after withdrawal of said sheath to facilitate deployment of said balloon at said location.

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