Small diameter lead with introducing assembly
First Claim
1. A pervenous lead system for establishing electrical contact between an electrical stimulation generator and an internal organ, comprisingan implantable lead with proximal and distal ends having a flexible insulated hollow lead body carrying at least one electrical conductor substantially occupying the lumen of said body, said lead having a portion of enlarged diameter toward the distal end and an organ-contacting electrode electrically connected to said conductor,removable flexible sleeve means slidably mounted on said lead body for applying axial force directly to the enlarged distal portion of said lead while traveling through a blood vessel, andmeans at the proximal end for connecting said conductor to the generator,whereby the lead can be urged flexibly through a blood vessel with stylet-like action by externally manipulating said sleeve means.
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Accused Products
Abstract
A lead for connecting a source of electrical signals to an internal organ of the body. The lead includes a small diameter lead body of carbon filaments surrounded by a stiffening sheath. The stiffening sheath allows the lead with an attached electrode to be guided to the desired internal organ through the vascular system. After the electrode is properly positioned, the sheath is peeled away from the carbon filament lead means of longitudinal grooves extending the length of the lead. The external stiffening sheath eliminates the need for the carbon lead to have a hollow interior for accepting a stylet. The disclosed lead is of small diameter which is particularly advantageous for multiple lead systems.
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Citations
5 Claims
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1. A pervenous lead system for establishing electrical contact between an electrical stimulation generator and an internal organ, comprising
an implantable lead with proximal and distal ends having a flexible insulated hollow lead body carrying at least one electrical conductor substantially occupying the lumen of said body, said lead having a portion of enlarged diameter toward the distal end and an organ-contacting electrode electrically connected to said conductor, removable flexible sleeve means slidably mounted on said lead body for applying axial force directly to the enlarged distal portion of said lead while traveling through a blood vessel, and means at the proximal end for connecting said conductor to the generator, whereby the lead can be urged flexibly through a blood vessel with stylet-like action by externally manipulating said sleeve means.
Specification