Patent ID: 8948882
Filing Date: 2015-02-03
Classification: A61N

Abstract:
1. A fixation component for a medical electrical lead, the component comprising: an elongate tubular sidewall including an inner surface and an outer surface, the inner surface defining an elongate lumen that has a uniform diameter along an entire length of the component, to receive a body of the lead, and the outer surface including a central portion and two end portions extending longitudinally from either end of the central portion, the two end portions having a diameter that is less than that of the central portion; a plurality of deformable barb-like projections being spaced apart from one another along a length of the central portion of the outer surface of the tubular sidewall, each projection including a first end attached to the tubular sidewall and a second, free end spaced apart from the outer surface of the tubular sidewall, when un-deformed; and an aperture corresponding to each of the plurality of barb-like projections, each aperture extending through the elongate tubular sidewall from the central portion of the outer surface to the inner surface, and each aperture having a width and a length, the length of each aperture being defined from a first edge thereof to an opposing second edge thereof, the first edge of each aperture being located in proximity to the attached end of the corresponding projection, and the length and the width of each aperture being sized so that each aperture receives the corresponding projection therein, when the projection is deformed wherein each of the plurality of barb-like projections has an arcuate cross-section that curves in a direction approximately orthogonal to an extension thereof between the corresponding first and second ends, so that each projection has a concave inner surface facing toward the corresponding aperture and a convex outer surface facing away from the aperture.