Mapping Grid with High Density Electrode Array

A catheter for electrophysiology applications, the catheter includes

• a tubular member extending along a longitudinal axis from a proximal portion to a distal portion, the distal portion having a cross-section disposed about the longitudinal axis, the cross-section intersecting first and second orthogonal planes that extend along the longitudinal axis, the cross-section of the distal portion includes
• first and second openings intersecting the first orthogonal plane and extending along the longitudinal axis, each of the openings configured to receive a puller wire;
• six apertures disposed between the first and second openings with four apertures intersecting the second orthogonal plane, each of the apertures configured to receive a spine member;
• and
• an end effector coupled to the distal portion, the end effector includes three closed-loop members with each loop including two spines so that six spine members of the three closed-loop members are disposed in the respective six apertures of the distal portion of the catheter.

A catheter for electrophysiology applications, the catheter includes

• a tubular member extending along a longitudinal axis from a proximal portion to a distal portion, the distal portion having a cross-section disposed about the longitudinal axis, the cross-section intersecting first and second orthogonal planes that extend along the longitudinal axis, the cross-section of the distal portion includes
• first and second openings intersecting the first orthogonal plane and extending along the longitudinal axis, each of the openings configured to receive a puller wire;
• six apertures disposed between the first and second openings with four apertures intersecting the second orthogonal plane, each of the apertures configured to receive a spine member;
• an end effector coupled to the distal portion, the end effector including first, second and third closed-loop members, the end effector having an unrestrained configuration in which:
• the first closed-loop member includes a first spine connected to a second spine with a first loop connector portion to define a first generally planar surface between the first spine, first loop and second spine such that the first generally planar surface intersects the first and second orthogonal planes,
• the second closed-loop member includes a third spine connected to a fourth spine with a second loop connector portion to define a second generally planar surface between the third spine, second loop connector portion and fourth spine such that the second generally planar surface intersects the first and second orthogonal planes, and
• the third closed-loop member includes a fifth spine connected to a sixth spine with a third loop connector portion to define a third generally planar surface that intersects only one of the first and second orthogonal planes.

A catheter for electrophysiology applications, the catheter includes:

• a tubular member extending along a longitudinal axis from a proximal portion to a distal portion;
• an end effector coupled to the distal portion, the end effector includes first, second and third loop members, each loop member includes two spines and a connector that connects the two spines;
• and
• a coupler block that connects to each connector of the first, second and third loop members, the coupler configured to have passages that extends through the coupler block to allow for receipt of each of the respective connectors of the first, second and third loop members.

A catheter for electrophysiology applications, the catheter includes:

• a tubular member extending along a longitudinal axis from a proximal portion to a distal portion;
• an end effector coupled to the distal portion, the end effector includes first and second loop members, each loop member includes two spines and a connector that connects the two spines;
• and
• a coupler block that connects to each connector of the first and second loop members, the coupler configured with through passages extending through the coupler block to allow for receipt of each of the respective connectors of the first and second loop members.