Granted Patent B2

US 12,533,185 · App. 18/128,054 · Granted Jan 27, 2026

Inventors: Joseph Thomas Keyes (Sierra Madre, CA); Kevin Justin Herrera (West Covina, CA); Nathaniel Jenkins (Irvine, CA)

Assignee: Biosense Webster (Israel) Ltd.

A61B18/1492A61B2018/00267A61B2018/00357A61B2018/00577A61B2018/00613A61B2018/00767A61B2018/00839A61B2018/1467A61B2034/2051

Abstract

Claims (24)

1 . An end effector of a catheter, the end effector comprising:

a support frame comprising a plurality of spines configured to self-expand away from a longitudinal axis from a proximal portion to a distal spine portion to form a basket configuration, the distal spine portion defining a cloverleaf structure disposed radially around the longitudinal axis, the cloverleaf structure defining a central cutout with a central area disposed about the longitudinal axis, the cloverleaf structure includes inner arcs defining a concave perimeter about the longitudinal axis; and

an atraumatic structure covering a portion of the cloverleaf structure of the support frame so that only inner arcs of the cloverleaf structure extending towards the proximal portion are visible.

2 . The end effector of claim 1 , further comprising:

a plurality of jackets over the plurality of spines, wherein the plurality of jackets extend and over a majority of the cloverleaf structure such that the atraumatic structure comprises a respective distal portion of each jacket of the plurality of jackets.

3 . The end effector of claim 2 , wherein the inner arcs extend from distal ends of the plurality of jackets and between adjacent jackets of the plurality of jackets.

4 . The end effector of claim 2 , further comprising:

a sensor disposed between the cloverleaf structure and a distal portion of a jacket of the plurality of jackets; and

a plurality of electrodes coupled to the plurality of spines such that a respective electrode of the plurality of electrodes is coupled to a respective spine of the plurality of spines.

5 . The end effector of claim 4 , the sensor being disposed in a distal direction in relation to a distal surface of the support frame in the basket configuration.

6 . The end effector of claim 4 , the sensor comprising a contact force sensor.

7 . The end effector of claim 4 , the sensor comprising a position sensor.

8 . The end effector of claim 7 , the position sensor comprising an inductive coil.

9 . The end effector of claim 7 , the position sensor comprising a magnetic sensor.

10 . The end effector of claim 1 , further comprising:

a plurality of electrodes positioned in pairs such that each spine comprises a respective electrode pair and such that the respective electrode pair of a spine does not longitudinally overlap an electrode pair of an adjacent spine.

11 . The end effector of claim 10 ,

wherein the plurality of electrodes comprises proximal pairs of electrodes and distal pairs of electrodes such that the proximal pairs of electrodes and distal pairs of electrodes are positioned in an alternating fashion on the plurality of spines, and

wherein the proximal pairs of electrodes are entirely proximal of an equator of the basket configuration.

12 . The end effector of claim 10 , wherein each electrode of the plurality of electrodes comprises a body defining a hollow portion extending through the body of the electrode so that a spine can be inserted into the hollow portion and retained on the spine.

13 . The end effector of claim 12 , wherein each spine comprises a retention member configured to be compressed to allow an electrode to be moved over the retention member, and the retention member being configured to expand to inhibit movement of the electrode along the spine.

14 . The end effector of claim 10 , wherein the plurality of electrodes is configured to deliver electrical pulses for irreversible electroporation, the electrical pulses including a peak voltage of at least 900 volts (V).

15 . The end effector of claim 1 , wherein the plurality of spines is configured to form an approximately spherically-shaped basket assembly when in the basket configuration.

16 . The end effector of claim 1 , wherein the plurality of spines is configured to form an approximately oblate-spheroid basket assembly when in the basket configuration.

Assignments (1)

Continuity (2)

References Cited (400)