Multi-tip steerable catheter
First Claim
1. A catheter comprising:
- an elongated catheter body having a proximal end, a distal end and at least one lumen extending longitudinally therethrough;
a control handle attached to the proximal end of the catheter body;
a mapping assembly mounted at a junction at the distal end of the catheter body and comprising at least two elongated flexible spines, each spine having a proximal end attached at or near the distal end of the catheter body and a free distal end, wherein each spine carries at least one electrode along its length, each spine further comprising a support member having shape memory; and
at least two spine puller wires, each spine puller wire corresponding to one of the at least two spines, wherein each spine puller wire has a proximal end anchored in the handle and a distal end anchored at or near the distal end of its corresponding spine such that, in use, longitudinal movement of a spine puller wire relative to the catheter body results in deflection of the spine to which the spine puller wire is anchored.
1 Assignment
0 Petitions
Accused Products
Abstract
An improved catheter is provided that is particularly useful for simultaneously mapping electrical activity at multiple locations within the heart. The catheter comprises an elongated catheter body having proximal and distal ends and at least one lumen extending longitudinally therethrough. A control handle is attached to the proximal end of the catheter body. A mapping assembly is mounted to the distal end of the catheter body. The mapping assembly comprises at least two elongated flexible spines, each spine having a proximal end attached to the distal end of the catheter body and a free distal end. Each spine carries at least one electrode along its length. The catheter further comprises at least two spine puller wires, each spine puller wire corresponding to one of the at least two spines. Each spine puller wire has a proximal end anchored in the handle and a distal end anchored at or near the distal end of its corresponding spine such that, in use, longitudinal movement of a spine puller wire relative to the catheter body results in deflection of the spine in which the spine puller wire is anchored. The use of a plurality of spines permits simultaneous mapping of multiple points, increasing the speed of mapping of regions of interest.
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Citations
14 Claims
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1. A catheter comprising:
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an elongated catheter body having a proximal end, a distal end and at least one lumen extending longitudinally therethrough; a control handle attached to the proximal end of the catheter body; a mapping assembly mounted at a junction at the distal end of the catheter body and comprising at least two elongated flexible spines, each spine having a proximal end attached at or near the distal end of the catheter body and a free distal end, wherein each spine carries at least one electrode along its length, each spine further comprising a support member having shape memory; and at least two spine puller wires, each spine puller wire corresponding to one of the at least two spines, wherein each spine puller wire has a proximal end anchored in the handle and a distal end anchored at or near the distal end of its corresponding spine such that, in use, longitudinal movement of a spine puller wire relative to the catheter body results in deflection of the spine to which the spine puller wire is anchored. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification