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US 12,575,881 B2Granted
Caliper tool with toggling between multiple ablation modes
AssigneeBiosense Webster (Israel) Ltd.
InventorsAssaf Govari, Aviva Goldberg
Life of this patent
Estimating the term…
Abstract
Methods and systems provide for coordinating multiple different types of ablation modes, such as Radio Frequency (RF) ablations of tissue portions with Pulsed Field ablations (PFA), for ablating tissue portions, e.g., ablation sites in the tissue, during a procedure, such as an ablation procedure on a cardiac wall.
Claims12
A method for monitoring tissue ablation, the method comprising:
- tracking a location of a distal end of a catheter within a heart chamber, the distal end comprising at least one electrode configured to deliver an ablation signal to cardiac tissue, wherein the ablation signal is generated by a generator electrically connected to the at least one electrode and configured to selectively generate the ablation signal using one of two distinct ablation modalities;
- rendering on a display device a model of the heart chamber and a virtual representation of the distal end;
- updating the rendering of virtual representation based on a current location of the distal end;
- identifying a currently selected ablation modality, the current ablation modality being selected from the two distinct ablation modalities;
- determining a distance between a projection of the current location on the cardiac tissue and a previous location at which an ablation signal was delivered;
- identifying a previous ablation modality used at the previous location, wherein the previous ablation modality was selected from the two distinct ablation modalities, wherein the previous ablation modality is stored in memory associated with the display;
- selecting a threshold distance from a plurality of predefined threshold distances based on the currently selected ablation modality and the previous ablation modality;
- and
- providing a first indication on the display device when the distance between the projection and a previous location is below the selected threshold distance.
6 more elements
A system for monitoring tissue ablation, comprising:
- a catheter including at least one distal electrode configured to deliver an ablation signal to cardiac tissue within a heart chamber, the electrode being electrically connected to a generator;
- the generator configured to generate an ablation signal in two distinct ablation modalities;
- a tracking system configured to track location of a distal end of the catheter,
- a processor programmed to:
- generate a model of the heart chamber using locations tracked by the tracking system;
- identify a currently selected ablation modality from the two distinct ablation modalities;
- determine a distance between a projection of the current location on the cardiac tissue and a previous location where an ablation signal was delivered;
- retrieve an ablation modality used at the previous location;
- and
- select a threshold distance from a plurality of predefined threshold distances, the selection based on the combination of the current and previous ablation modalities;
- a display device configured to:
- display a virtual representation of the catheter's distal end within the model of the heart chamber;
- update the virtual representation in real time as the distal end moves;
- and
- provide a first visible indication on the display when the distance between the projection and the previous location is below the selected threshold distance.
12 more elements
Dependencies are inferred from the claim text.