Apparatus for manufacturing an endocardial defibrillation lead with multi-lumen body and method
First Claim
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1. An implantable cardiac stimulation lead comprisingan elongated lead body having a proximal and a distal end;
- said elongated lead body having a plurality of lumens extending through the length thereof;
an electrical connector at said proximal end;
a first electrode near said distal end, and an electrical conductor electrically connecting said electrical connector and said electrode, said conductor passing through one of said lumens and comprising a conductive wire having a first end and a second end, said wire being folded into a bend at a point substantially midway along said wire and positioned in said lead body such that said bend is near one end of said lead body and both said first and second ends are near the other end of said lead body, said elongated lead body having a window between said proximal and distal ends, said window opening said lumen and said conductor passing through said window.
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Abstract
An implantable endocardial defibrillation lead having an elongated lead body with multiple lumens therein. Windows, cut through the lead body, provide access to selected ones of the lumens at selected locations along the lead body. In addition, a method and an apparatus for forming windows in a multilumen lead body are disclosed. A ferromagnetic stylet is inserted into a selected lumen. The lead body is oriented in a jig by application of an electromagnetic field. A grinder or punch cuts a window into the selected lumen.
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Citations
16 Claims
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1. An implantable cardiac stimulation lead comprising
an elongated lead body having a proximal and a distal end; -
said elongated lead body having a plurality of lumens extending through the length thereof;
an electrical connector at said proximal end;
a first electrode near said distal end, and an electrical conductor electrically connecting said electrical connector and said electrode, said conductor passing through one of said lumens and comprising a conductive wire having a first end and a second end, said wire being folded into a bend at a point substantially midway along said wire and positioned in said lead body such that said bend is near one end of said lead body and both said first and second ends are near the other end of said lead body, said elongated lead body having a window between said proximal and distal ends, said window opening said lumen and said conductor passing through said window.
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2. A method for making a lead body comprising
providing an elongated, flexible lead body having a proximal end and a distal end and having a plurality of lumens extending from said proximal end to said distal end; -
passing a ferromagnetic stylet through at least one of said lumens;
placing said lead body in a jig to support said lead body at at least a selected location between said proximal and distal ends;
employing a magnetic field affecting said ferromagnetic sylet to orient said lead body; and
cutting a window in said lead body into at least one of said plurality of lumens at said selected location. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification