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Transcatheter prosthetic heart valve delivery system and method with controlled expansion of prosthetic heart valve

  • US 9,173,738 B2
  • Filed: 12/03/2013
  • Issued: 11/03/2015
  • Est. Priority Date: 04/21/2010
  • Status: Active Grant
First Claim
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1. A method of performing a therapeutic procedure on a defective heart valve of a patient, the method comprising:

  • receiving a delivery system loaded with a self-expanding prosthetic heart valve having a stent frame to which a valve structure is attached, the delivery system including a shaft assembly slidably positioned within a delivery sheath, the shaft assembly including a first coupling structure disposed near a distal end of the shaft assembly and coupled to a distal end of the prosthetic heart valve via a first tether, the delivery sheath containing the prosthetic heart valve in a compressed arrangement;

    manipulating the delivery system to guide the prosthetic heart valve through the patient'"'"'s vasculature and into the defective heart valve;

    withdrawing the delivery sheath from the prosthetic heart valve to a partially retracted state in which an entirety of a distal region of the prosthetic heart valve is exposed and an entirety of a proximal region of the prosthetic heart valve is contained within the delivery sheath;

    manipulating the first coupling structure in a first direction to provide a controlled expansion of the distal end of the prosthetic heart valve while in the partially retracted state; and

    releasing the prosthetic heart valve from the delivery system.

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