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Image-guided heart valve placement

  • US 9,949,831 B2
  • Filed: 02/06/2014
  • Issued: 04/24/2018
  • Est. Priority Date: 01/19/2000
  • Status: Expired due to Fees
First Claim
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1. A method for determining whether a replacement heart valve is appropriate for implanting in a section of a heart of a patient into which the replacement heart valve is to be implanted, the method comprising:

  • inserting an expandable distal end portion of a sizing device into the section of the heart of the patient into which the replacement heart valve is to be implanted, wherein selective expansion of the distal end portion of the sizing device applies a selected radial force to the section of the heart, wherein the selective expansion of the distal end portion simulates at least one property of the replacement heart valve in a deployed state;

    imaging the section of the heart while the distal end portion of the sizing device in an expanded state applies a radial force to the section of the heart during heart rhythm; and

    reimaging the section of the heart while the distal end portion of the sizing device in a contracted state does not apply the radial force to the section of the heart during heart rhythm;

    deriving, from the imaging and the reimaging, dimensional characteristics of the section of the heart based on images of the distal end portion of the sizing device applying and not applying the radial force to the section of the heart; and

    determining whether the replacement heart valve is appropriate for implantation in the section of the heart based on the derived dimensional characteristics of the section of the heart.

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