Systems and methods for estimating outer diameters of prosthetic valves
Inventors
Dvorsky, Anatoly • Khader, Yara
Assignees
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Publication Number
US-12728002-B2
Publication Date
2026-09-08
Expiration Date
Abstract
The present invention relates to systems and methods for estimating prosthetic valve expansion diameter, and in particular, for system and methods for analyzing images acquired during prosthetic valve expansion, to identify structural components of the valve, determine dimensions thereof, and estimate at least one outer diameter of the prosthetic valve, and potentially a plurality of outer diameter along different axial positions of the prosthetic valve.
Core Innovation
The invention provides a method and computing system for estimating at least one outer diameter of a prosthetic valve during an expansion procedure at a target implantation site from an image. Control circuitry receives the image, detects structural components at an axial position, and measures a lateral width between them. Using the known length of an identified constant-length structural component and a geometric relationship, the system estimates and outputs outer diameter information during expansion.
The diameter estimation can utilize a circumcircle around an internal polygon defined by junctions, with pixel measurements calibrated using the known length of the constant-length structural component. Furthermore, measurements at different axial positions provide diameter estimates along the valve, while interpolation or extrapolation estimates diameters at unmeasured positions. Multiple vertical-height measurements can also be used to indicate non-even expansion.
Claims Coverage
The two independent claims are claim 1, directed to a method, and claim 16, directed to a computing system. They cover two inventive features for estimating and outputting a prosthetic valve outer diameter during expansion.
Image-based method for estimating valve outer diameter
Claim 1 covers acquiring an image of the prosthetic valve during expansion, detecting at least two structural components at an axial position, and measuring a lateral width between them. The method identifies a constant-length structural component, retrieves its length, applies a geometric relationship using the lateral width and that length to estimate at least one outer diameter, and outputs an indication of the estimate.
Computing system for estimating valve outer diameter
Claim 16 covers a computing system comprising control circuitry and communicatively coupled memory storing executable instructions. The instructions cause the system to receive an image, detect at least two structural components at an axial position, measure a lateral width between them, identify a constant-length structural component and retrieve its length, apply a geometric relationship to estimate at least one outer diameter, and output an indication of the estimate during expansion.
The independent claims cover the method and computing system for image-based diameter estimation using a measured lateral width, a constant-length structural component, and a geometric relationship. Dependent claims further describe measurement at multiple axial positions, pixel-to-length conversion, polygon-based estimation, and assessment of non-even expansion.
Stated Advantages
Diameter feedback supports valve sizing and expansion monitoring.
The description states that the approach can potentially reduce annular trauma or rupture and paravalvular leakage.
Documented Applications
Estimating prosthetic valve outer diameter during an expansion procedure at a target implantation site.
Providing diameter feedback to support valve sizing and monitoring expansion, including assessing whether expansion is non-even.
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