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Delivery catheter with constraining sheath and methods of deploying medical devices into a body lumen

  • US 8,545,544 B2
  • Filed: 04/02/2009
  • Issued: 10/01/2013
  • Est. Priority Date: 04/03/2008
  • Status: Active Grant
First Claim
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1. A delivery catheter for delivering a medical device, the delivery catheter comprising:

  • a constraining sheath having a proximal end coupled to a distal end of the delivery catheter and a free distal end, said constraining sheath holding the medical device in a constrained state, the constraining sheath including spaced-apart holes arranged longitudinally from the free distal end of the constraining sheath;

    a wire threaded through the holes proximally starting from the free distal end of the sheath, the wire having a first free end section extending proximally therefrom and a second free distal end; and

    a said cutting member at the second free distal end of said wire, said cutting member having a cutting edge directed toward said proximal end such that cutting member tears the constraining sheath longitudinally when a pulling force is applied proximally to the first free end section, thereby releasing the medical device from a constrained configuration to an expanded configuration.

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