US 12,239,391 B2
Catheter navigation systems and methods
Saar Moisa, Vancouver (CA)
Assigned to KARDIUM INC., Burnaby (CA)
Filed by KARDIUM INC., Burnaby (CA)
Filed on Dec. 12, 2023, as Appl. No. 18/536,492.
Application 18/536,492 is a continuation of application No. 17/389,972, filed on Jul. 30, 2021, granted, now 11,918,303.
Application 17/389,972 is a continuation of application No. PCT/CA2020/050061, filed on Jan. 21, 2020.
Claims priority of provisional application 62/865,460, filed on Jun. 24, 2019.
Claims priority of provisional application 62/805,338, filed on Feb. 14, 2019.
Prior Publication US 2024/0099787 A1, Mar. 28, 2024
Int. Cl. A61B 34/20 (2016.01); A61B 90/00 (2016.01)
CPC A61B 34/20 (2016.02) [A61B 90/36 (2016.02); A61B 2034/2046 (2016.02)] 32 Claims
OG exemplary drawing
 
1. A catheter navigation system comprising:
an input-output device system communicatively connected to a display device system;
a memory device system storing a program; and
a data processing device system communicatively connected to the input-output device system and the memory device system, the data processing device system configured at least by the program at least to:
receive a plurality of location signal sets, each location signal set of the plurality of location signal sets indicative of a respective location in a sequence of locations at which at least a portion of a catheter has sequentially moved to in a bodily cavity, the catheter comprising a plurality of transducers;
receive a plurality of contact signal sets from a first set of transducers of the plurality of transducers, each transducer of at least the first set of transducers configured to detect transducer-to-tissue contact, each contact signal set of the plurality of contact signal sets indicating a degree of transducer-to-tissue contact between each transducer of the first set of transducers and a tissue surface within the bodily cavity, and each contact signal set corresponding to a respective location in the sequence of locations of the at least the portion of the catheter in the bodily cavity;
cause the display device system to progressively visually represent, in a progressively enlarging manner and based on and throughout reception of at least the plurality of location signal sets, at least a portion of an envelope, the envelope representing an interior volume of the bodily cavity, and the progressively enlarging manner increasing a space represented by the envelope; and
cause, during the progressively visually representing in the progressively enlarging manner, the display device system to visually indicate each envelope enlargement, leading to the visually represented at least the portion of the envelope, as visually including (a) at least one tissue-contact region, or (b) at least one no-tissue-contact region, or both (a) and (b), such that the visually represented at least the portion of the envelope visually distinguishes one or more tissue-contact regions from one or more no-tissue-contact regions, each tissue-contact region of the one or more tissue-contact regions associated with transducer-to-tissue contact according to at least a particular contact signal set of the plurality of contact signal sets, and each no-tissue-contact region of the one or more no-tissue-contact regions associated with no transducer-to-tissue contact according to at least a particular contact signal set of the plurality of contact signal sets.