CPC A61M 25/0105 (2013.01) [A61B 5/062 (2013.01); A61B 34/20 (2016.02); A61M 25/0074 (2013.01); A61B 2034/2061 (2016.02); A61B 2560/0223 (2013.01); A61M 25/10 (2013.01); A61M 2025/0166 (2013.01)] | 14 Claims |
1. A system, comprising:
an expandable distal-end assembly coupled to a distal end of a shaft for insertion into a cavity of an organ of a patient;
a proximal position sensor located at a proximal end of the expandable distal-end assembly;
a distal position sensor located at a distal end of the expandable distal-end assembly; and
a processor, configured to:
based on signals received from the proximal position sensor, estimate a position and a longitudinal direction of the proximal position sensor in a coordinate system used by the processor;
based on signals received from the distal position sensor, estimate a position of the distal position sensor in the coordinate system;
project the estimated position of the distal position sensor on an axis defined by the estimated longitudinal direction; and
calculate an elongation of the expandable distal-end assembly by calculating a distance between the estimated position of the proximal position sensor and the projected position of the distal position sensor.
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