Biosense Webster (israel) Ltd.

Justin George Lichter

Christopher Thomas Beeckler

Joseph Thomas Keyes

Assaf Govari

Embodiments of the present invention include a medical probe having a flexible insertion tube, a basket assembly, and a plurality of electrodes. The basket assembly has a proximal end that is connected distally to the insertion tube and includes a plurality of resilient spines, which have respective outer sides and inner sides and are configured to bow radially outward from an axis of the basket assembly and are conjoined at the proximal end and at a distal end of the basket assembly. The plurality of electrodes are fixed to respective ones of the spines in respective longitudinal positions that are staggered on any given spine relative to the longitudinal positions of the electrodes on the spines adjacent to the given spine, and which include a conductive material that is biased towards the respective outer sides of the spines.

Staggered pairs of biased ablation electrodes on basket catheter

A system for use with multiple electrodes coupled to respective spines of a probe includes multiple switches connected to the electrodes and configured to short different respective first subsets of the electrodes to each other and different respective second subsets of the electrodes to each other per different respective settings of the switches. The system further includes a processor configured to control the switches so as to alternate through the settings and, for each of the settings, cause a power generator to apply a voltage between the shorted first subset and the shorted second subset while the probe is deployed within a body of a subject. Other examples are also described.

Irreversible electroporation with shorted electrodes

Apparatus for medical treatment, consisting of a probe and a processor. The probe has an insertion tube having a distal end configured for insertion into a body cavity of a living subject, and a basket assembly having multiple resilient spines coupled to the distal end of the insertion tube and joined together in a predefined form when the basket assembly is unconstrained by external forces. The probe also has a force sensor configured to output an indication of a force exerted on the basket assembly within the body cavity. The processor is configured to receive the indication of the force, to compute a constrained form of the basket assembly, different from the predefined form, responsively to the force, and to render to a display a graphical image representing the constrained form of the basket assembly.

Cage deformation modeling

A medical probe, including a flexible insertion tube having proximal and distal ends, and a basket assembly at the distal end of the flexible insertion tube. In embodiments of the present invention, the basket assembly includes a plurality of spines and a plurality of electrodes, each of the electrodes having a lumen therethrough fitting a given spine.

Biased electrodes for improved tissue contact and current delivery

Medical apparatus includes an insertion tube configured for insertion into a body cavity of a patient and a distal assembly, including a plurality of spines having respective proximal ends that are connected distally to the insertion tube. Each spine includes a rib extending along a length of the spine, a flexible polymer sleeve disposed over the rib and defining a lumen running parallel to the rib along the spine, and one or more electrodes disposed on the sleeve and configured to contact tissue within the body cavity.

Growing community of inventors

Irvine, CA, United States of America

Justin George Lichter