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Protective sheath for catheter balloons

  • US 5,964,730 A
  • Filed: 08/29/1997
  • Issued: 10/12/1999
  • Est. Priority Date: 08/15/1996
  • Status: Expired due to Term
First Claim
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1. A heat shrinkable polymeric balloon sheath for a catheter balloon, comprising an inner lumen with a minimum inner diameter before heat shrinkage which is at least 125% larger than a maximum outer diameter of the uninflated catheter balloon and after heat shrinkage which is smaller than the maximum outer diameter of the uninflated catheter balloon so that the sheath after heat shrinkage is configured to be tightly fitting around a circumference of the uninflated catheter balloon, and having a proximal section, a distal section, and a continuous cylindrical section extending from the proximal section to the distal section of the sheath, and a weakened sheath wall portion along at least a length thereof to provide tear away characteristics.

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