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Devices and methods for sizing valve apertures and luminal organs

  • US 10,568,546 B2
  • Filed: 06/17/2015
  • Issued: 02/25/2020
  • Est. Priority Date: 02/21/2003
  • Status: Expired due to Fees
First Claim
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1. A device for obtaining measurements within a luminal organ, comprising:

  • an elongated body;

    a first sizing finger and a second sizing finger, each comprising a proximal end and an unattached distal tip, the proximal end positioned at a distal end of the elongated body and the first sizing finger and the second sizing finger each configured to move from a first position to a second position by way of adjustment of at least one movable device coupled thereto, wherein the at least one movable device comprises a first control wire coupled to the first sizing finger and a second control wire coupled to the second sizing finger, wherein the first control wire is configured to move the first sizing finger independently from the second sizing finger controlled by the second control wire, and wherein the proximal end of each of the first sizing finger and the second sizing finger is hingedly coupled to the elongated body;

    a first electrode positioned upon the first sizing finger;

    a second electrode positioned upon the second sizing finger; and

    a third electrode and a fourth electrode positioned along the elongated body proximal to the first and second sizing fingers and separated a known distance from one another;

    wherein a first dimensional measurement within the luminal organ can be determined based upon the first position and the second position of each of the first sizing finger and the second sizing finger, the first dimensional measurement indicative of a measurement along a first axis; and

    wherein an additional dimensional measurement within the luminal organ can be obtained using the third electrode and the fourth electrode, based in part upon the known distance between the third electrode and the fourth electrode and a voltage difference between the third electrode and the fourth electrode, the additional dimensional measurement indicative of a measurement along a second axis orthogonal to the first axis.

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