USING A PIECEWISE-LINEAR MODEL OF A CATHETER ARM TO IDENTIFY CONTACT WITH TISSUE

Described embodiments include a method for use with a catheter that includes at least one flexible arm to which are 5 coupled a plurality of electrodes. The method includes calculating, by a processor, respective estimated locations of the electrodes while the catheter is within a portion of a body...

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Bibliographic Details
Main Authors Osadchy, Daniel, Bar-Tal, Meir
Format Patent
LanguageEnglish
Published 20.12.2018
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Summary:Described embodiments include a method for use with a catheter that includes at least one flexible arm to which are 5 coupled a plurality of electrodes. The method includes calculating, by a processor, respective estimated locations of the electrodes while the catheter is within a portion of a body of a subject, fitting a model of the catheter, which models the flexible arm as a piecewise-linear element that 0 includes a plurality of linear segments, to the estimated locations, ascertaining for each of the electrodes, based on respective orientations of one or more of the linear segments per the fitting, whether the electrode is in contact with tissue of the subject, and updating a map of the portion of 5 the body of the subject, in response to ascertaining that at least one of the electrodes is in contact with the tissue. Other embodiments are also described. c'\O C'\4
Bibliography:Application Number: AU20180202917