公开(公告)号：US20150320995A1

公开(公告)日：2015-11-12

申请号：US14521958

申请日：2014-10-23

Applicant: Medtronic, Inc.

Inventor： Vishal R. Nazareth ,  Gregory A. Boser ,  Lorraine R. Gaunt

IPC: A61N1/05

CPC classification number: A61N1/05 ,  A61N1/056 ,  A61N1/0563 ,  A61N1/0565 ,  Y10T29/49206

Abstract: An implantable electrode for electrical stimulation of a body, for example, being a component of an implantable medical electrical lead, is preferably in the form of a coiled conductor wire, wherein the wire is formed by a tantalum (Ta) core directly overlaid with a platinum-iridium (Pt—Ir) cladding. When a maximum thickness of the Pt—Ir cladding defines a cladded zone between an outer, exposed surface of the electrode and the Ta core, a surface of the Ta core encroaches into the cladded zone by no more than approximately 50 micro-inches. The tantalum core may be cold worked to improve surface quality or formed from a sintered and, preferably, grain stabilized tantalum.

Abstract translation: 用于电刺激身体的可植入电极，例如作为可植入医疗电引线的部件，优选为线圈状导体线的形式，其中线由直接覆盖有 铂 - 铱（Pt-Ir）包层。 当Pt-Ir包层的最大厚度限定在电极的外暴露表面和Ta核之间的包层区域时，Ta核的表面侵入包层区域不超过约50微英寸。 钽芯可以被冷加工以改善表面质量或由烧结的，优选的晶粒稳定的钽形成。