Electrically insulated "J" stiffener wire
First Claim
1. A cardiac lead comprising:
- a tubular body having a proximal end and a distal end, a coiled conductor within said tubular body defining a lumen therein and having a distal end and a proximal end, a tip electrode mounted at the distal end of said tubular body, an elongate stiffener wire comprising an elongate member made of a wire having a preset shape and having a distal end and a proximal end positioned within said tubular body, an electrical insulative material covering siad elongate member for the length thereof to prevent short circuiting of the coils of said coiled conductor which may come in contact with said elongate member;
means for connecting a portion of the distal end of said coiled conductor to said tip electrode; and
means for fixing the distal end of said elongate member at the distal end of said tubular body.
6 Assignments
0 Petitions
Accused Products
Abstract
The cardiac lead comprises a tubular body having a proximal end and a distal end, a coiled conductor within the tubular body defining a lumen therein and having a distal end and a proximal end, a tip electrode mounted at the distal end of the tubular body, and an elongate stiffener wire comprising an elongate member made of a wire having a preset shape, a distal end and a proximal end positioned within the tubular body. The stiffener wire includes an electrical insulative material covering the elongate member for the length thereof to prevent short circuiting of the coils of the coiled conductor which may come in contact with the elongate member. A sleeve is provided for connecting a portion of the distal end of the coiled conductor to the tip electrode and for fixing the distal end of the elongate member at the distal end of the tubular body.
136 Citations
20 Claims
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1. A cardiac lead comprising:
a tubular body having a proximal end and a distal end, a coiled conductor within said tubular body defining a lumen therein and having a distal end and a proximal end, a tip electrode mounted at the distal end of said tubular body, an elongate stiffener wire comprising an elongate member made of a wire having a preset shape and having a distal end and a proximal end positioned within said tubular body, an electrical insulative material covering siad elongate member for the length thereof to prevent short circuiting of the coils of said coiled conductor which may come in contact with said elongate member;
means for connecting a portion of the distal end of said coiled conductor to said tip electrode; and
means for fixing the distal end of said elongate member at the distal end of said tubular body.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- 15. A "J" shaped pacing lead comprising a tubular body having a proximal end and a distal end, a coiled conductor within said body defining a lumen therein and having a distal end and a proximal end, a tip electrode including a head and a proximally extending stem mounted at said distal end of said tubular body, a "J" shaped stiffener comprising an elongate body which has a preset formed shape and a memory for said shape, said elongate body being made of a deformable material and being positioned in said tubular body, said stiffener wire having an electrical insulating material covering the length of said stiffener, thereby to prevent short circuiting of the coils of said coiled conductor which may come in contact with said stiffener and a sleeve around and crimped against said stiffener wire, a portion of said distal end of said coiled conductor, and said stem of said tip electrode.
- 18. A "J" shaped pacing lead comprising a tubular body having a proximal end and a distal end, a coiled conductor within said body defining a lumen therein, a tip electrode including a head and a proximally extending stem mounted at said distal end of said tubular body, and a "J" shaped stiffener wire comprising an elongate member having a distal end and a proximal end and which has a formed shape and a memory for the shape, said member being made of a deformable material, said stiffener wire being positioned in said tubular body, said stiffener wire being covered by an electrically insulative material to prevent a short circuit between adjacent coils of said coiled conductor which may come in contact with said stiffener wire, a sleeve around and crimped against said coiled conductor, said stiffener wire and said stem of said tip electrode, and a stylet for use within said pacing lead, said stylet including an elongate wire coated with an insulative material and being removably received within said lumen of said coiled conductor.
Specification