"J" Stylet wire
First Claim
1. A body implantable lead comprising:
- a conductor having a proximal end and a distal end and having a lumen extending from said proximal end to said distal end;
an insulating sheath covering said conductor;
fixation means for securing said distal end of said conductor to body tissue;
electrical connector attached to said proximal end of said conductor for electrically coupling said conductor to an electrical generator;
stylet means removably located within said lumen of said conductor for imparting a curve to a portion of the distal end of the conductor for guiding placement of said distal end of said conductor; and
flexible means, having a proximal end, rotatably and removably located within said lumen of said conductor coaxial to said stylet means for transferring torque induced at said proximal end of said flexible means to said fixation means while said stylet means imparts a curve to the distal end portion of said conductor.
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Accused Products
Abstract
A body implantable lead having a two-piece stylet. An inner solid portion of the stylet enables a shape to be imparted to the stylet to allow proper maneuvering of the lead during implant. A second portion of the stylet is slideably located coaxially about the first portion. The second portion of the stylet permits the imposition of a torque at the distal end of the implantable lead by the turning of a knob fixedly attached to the proximal end of the second portion of the stylet. The second portion of the stylet is a helically wound coil. The two-piece stylet is inserted into the proximal end of the body implantable lead. The distal end of the body implantable lead is located in the position desired through the use of the solid inner first portion of the stylet in which a bend or other desired shape has been introduced. The body implantable lead is permanently attached to the muscle tissue by a fixation device activated through the torque supplied by the second portion of the stylet. The two portions of the stylet may be fabricated from a variety of materials.
26 Citations
22 Claims
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1. A body implantable lead comprising:
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a conductor having a proximal end and a distal end and having a lumen extending from said proximal end to said distal end; an insulating sheath covering said conductor; fixation means for securing said distal end of said conductor to body tissue;
electrical connector attached to said proximal end of said conductor for electrically coupling said conductor to an electrical generator;stylet means removably located within said lumen of said conductor for imparting a curve to a portion of the distal end of the conductor for guiding placement of said distal end of said conductor; and flexible means, having a proximal end, rotatably and removably located within said lumen of said conductor coaxial to said stylet means for transferring torque induced at said proximal end of said flexible means to said fixation means while said stylet means imparts a curve to the distal end portion of said conductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A body implantable lead comprising:
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a conductor having a proximal end and a distal end and having a lumen extending from said proximal end to said distal end; an insulative sheath covering said conductor; an electrode coupled to the distal end of said conductor; electrical connector means attached to said proximal end of said conductor for electrically coupling said conductor to an electrical generator; stylet means removably located within said lumen of said conductor for imparting a curve to a portion of the distal end of the conductor to guide the electrode to a desired position in the heart; and flexible means, having a proximal end, rotatably and removably located within the lumen of said conductor coaxial to said stylet means for transferring torque induced at said proximal end of said flexible means to the distal end of said conductor while said stylet means imparts a curve to the distal end portion of said conductor. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A body implantable lead assembly comprising a lead having a proximal end and a distal end, said proximal end adapted to be connected to electrical means for supplying or receiving electrical pulses, said distal end being adapted to be connected to tissue of a living body, said lead comprising a sheath of material inert to body materials or fluids and at least one wire conductor having a proximal end and a distal end and extending from said proximal end of said lead within said sheath to said distal end of said lead, a terminal structure electrically coupled to said proximal end of said wire conductor and adapted to electrically couple said proximal end of said wire conductor to said electrical means, an electrode assembly including an electrode, said distal end of said wire conductor being electrically connected to said electrode, said electrode including a tubular body which has a proximal end and a distal end and said sheath being coupled to said proximal end of said tubular body and having a proximal end and a distal end, a corkscrew shaped securing device within said tubular body and having a proximal end and a distal end, a mounting member being received in said tubular body and having said proximal end of said securing device mounted on one end thereof, flexible drive means for rotation within said sheath, having a proximal end and a distal end extending from said proximal end of said lead to said distal end of said lead, being coupled at its distal end to the proximal end of said mounting member in said tubular body, said flexible drive means defining a lumen or cylindrical envelope about the central area of said lead through which and in which a stylet is adapted to be received, and a drive member at the proximal end of said lead fixed for rotation, said drive member having two ends and having one end thereof connected to the proximal end of said flexible drive means and the other end thereof extending from said lead assembly, said drive member further being adapted to be rotated to screw said securing device into living tissue and having a passageway therethrough opening into said lumen at one end and to the environment at the other end and into which passageway a stylet is adapted to be inserted for passage through said drive means for stiffening said lead, and said flexible drive means enabling one to rotate said corkscrew shaped securing device without twisting a curved distal portion of said lead. .Iaddend. .Iadd.
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21. A body implantable lead comprising:
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a conductor having a proximal end and a distal end and having a lumen extending from said proximal end to said distal end; an insulating sheath covering said conductor; fixation means for securing said distal end of said conductor to body tissue; electrical connector means attached to said proximal end of said conductor for electrically coupling said conductor to an electrical generator; stylet means removably located within said lumen of said conductor for imparting a curve to a portion of the distal end of said conductor for guiding placement of said distal end of said conductor; and flexible means, having a proximal end and a distal end, rotatably located within said lumen of said conductor coaxial to said stylet means for transferring torque induced at said proximal end of said flexible means to said fixation means while said stylet means imparts a curve to the distal portion of said conductor. .Iaddend. .Iadd. - View Dependent Claims (22)
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Specification