System and method for assessing dimensions and eccentricity of valve annulus for trans-catheter valve implantation
First Claim
1. A system for determining the dimensions and geometry of a native valve annulus for trans-catheter valve implantation, the system comprising:
- a balloon extending in a longitudinal direction;
a shaft extending in the longitudinal direction within the balloon;
a first spline connected to the shaft;
a second spline connected to the shaft;
a third spline connected to the shaft;
a first electrode positioned on the first spline;
a second electrode positioned on the second spline; and
a sensing electrode positioned on the third spline;
wherein the first electrode and the second electrode are configured to produce an electrical field upon application of current to the first electrode and the second electrode, the electrical field being detectable by the sensing electrode; and
a central ring electrode located on the shaft and configured to serve as a reference electrode to allow measurement of values associated with the electrical field produced by the first and second electrodes.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for detecting the dimensions and geometry of a native valve annulus for trans-catheter valve implantation includes a compliant balloon and a shaft within the balloon. One or more drive electrodes may be affixed to a surface of the balloon, and one or more sense electrodes may be affixed to the shaft. After insertion of the balloon into the native valve annulus, the drive electrodes may be energized with a predetermined voltage. Using a trained statistical model and the voltages measured at the sense electrodes, initial estimates of the cross-section of the valve annulus may be obtained. The initial estimates may then be provided to an optimization model of the valve annulus to obtain a highly accurate prediction of the cross-section of the valve annulus.
-
Citations
16 Claims
-
1. A system for determining the dimensions and geometry of a native valve annulus for trans-catheter valve implantation, the system comprising:
-
a balloon extending in a longitudinal direction; a shaft extending in the longitudinal direction within the balloon; a first spline connected to the shaft; a second spline connected to the shaft; a third spline connected to the shaft; a first electrode positioned on the first spline; a second electrode positioned on the second spline; and a sensing electrode positioned on the third spline; wherein the first electrode and the second electrode are configured to produce an electrical field upon application of current to the first electrode and the second electrode, the electrical field being detectable by the sensing electrode; and a central ring electrode located on the shaft and configured to serve as a reference electrode to allow measurement of values associated with the electrical field produced by the first and second electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A system for determining the dimensions and geometry of a native valve annulus for trans-catheter valve implantation, the system comprising:
-
a balloon extending in a longitudinal direction; a shaft extending in the longitudinal direction within the balloon; a first spline connected to the shaft; a second spline connected to the shaft; a third spline connected to the shaft; a first electrode positioned on the first spline; a second electrode positioned on the second spline; and a sensing electrode positioned on the third spline; wherein the first electrode and the second electrode are configured to produce an electrical field upon application of current to the first electrode and the second electrode, the electrical field being detectable by the sensing electrode, wherein the first, second, and third splines each have a retracted condition and an expanded condition, and wherein the first, second, and third splines each contact an inner wall of the balloon when the balloon is in an inflated condition.
-
Specification