Patent ID: 8364234
Filing Date: 2013-01-29
Classification: A61B,F04C,Y10T

Abstract:
1. A system for sensing multiple local electric voltages from endocardial surface of a heart, comprising: a first elongate tubular member having a lumen, a proximal end and a distal end; a basket assembly comprising: wherein the splines approach the distal tip at an angle of about 90° or less than about 90° as measured from a line segment between the proximal anchor and the distal tip along the longitudinal axis; wherein the splines comprise a superelastic material such that the basket assembly exhibits a substantially cylindrical shape when radially compressed and exhibits a radially expanded non-spherical shape when not radially compressed; wherein at least some of the splines in the radially expanded non-spherical shape contain a distal excurvate outward bend disposed at the distal portion of the spline at a location near to the distal tip of the basket assembly to bend the splines back towards the proximal anchor; and wherein, when the basket assembly is in said radially expanded non-spherical shape, the splines extend beyond the distal tip; and, when the basket assembly is in said radially expanded non-spherical shape, apices of the distal excurvate bends are disposed beyond the distal tip.