Mechanical modules of catheters for sensor fusion processes

US11547492B2 · kind B2 · utility

Assignee

• ST. JUDE MEDICAL INTERNATIONAL HOLDING S.Á R.L. · LU

Inventors

• Anthony D. Hill · Minneapolis, US
• Cable P. Thompson · Windom, US
• Yuriy Malinin · Palo Alto, US
• Paul A. Belk · Maple Grove, US
• Eric Douglas Lundquist · Los Angeles, US
• Maxim Yoresh · Haifa, IL

Key dates

• Filing date: Oct 29, 2019
• Grant date: Jan 10, 2023
• Expiry date: Oct 14, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2562/043
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Systems and methods are described for implementing a catheter model to estimate shape of a deformable catheter in a three-dimensional space. The catheter model includes two or more model segments that correspond to two or more segments of the deformable catheter. Each model segment includes a length and location of model electrode(s) and/or model magnetic sensor(s) corresponding electrodes and/or magnetic sensors of the deformable catheter. Variable shape parameter define a curvature of the segment. Varying the shape parameters generates a plurality of potential catheter shapes. In conjunction with generating the potential catheter shapes, impedance and/or magnetic responses (e.g., measured responses) are obtained for the physical electrodes and/or physical magnetic sensors of the deformable catheter. Using a selected one (e.g., most likely) of the potential catheter shapes and the measured responses, the shape parameters are updated and a catheter shape is generated and displayed.