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Medical device shaft designs

  • US 8,235,969 B2
  • Filed: 03/06/2006
  • Issued: 08/07/2012
  • Est. Priority Date: 03/06/2006
  • Status: Active Grant
First Claim
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1. An intracorporeal device comprising:

  • an elongate shaft having inner and outer elongate members and a fluid flow lumen defined by a space between the inner and outer elongate members, the lumen in fluid communication with a balloon disposed on a distal end of the shaft;

    wherein an outer surface of the inner elongate member or an inner surface of the outer elongate member comprises at least one raised portion; and

    wherein the number of raised portions is varied along the length of the shaft, imparting a variable stiffness along the length of the shaft;

    wherein the sides of the at least one raised portion each extend substantially along a different radius extending out from an axis running down the center of the shaft.

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