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Lead with stylet capture member

  • US 5,480,421 A
  • Filed: 08/05/1994
  • Issued: 01/02/1996
  • Est. Priority Date: 10/30/1992
  • Status: Expired due to Term
First Claim
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1. An epidural lead having a distal end and a proximal end, the epidural lead comprising:

  • a flexible tubular outer member substantially concentric to a longitudinal axis of the lead, said outer member extending substantially an entire length of the lead,a flexible tubular inner member lying within said outer member, said inner member having a distal end located near the distal end of the lead, said inner member extending substantially to the proximal end of the lead and defining a central lumen,at least one electrode secured to said outer member near the distal end of the lead,at least one conductor connected to said at least one electrode for transmitting electrical signals from the proximal end of the lead to said at least one electrode,a stylet for insertion in the central lumen of the lead, said stylet having an enlarged tip of predetermined shape at a distal end, andcapture means connected to said flexible tubular outer member at the distal end of the lead for releasably securing in a stabilized positional relationship the enlarged tip of said stylet to the lead in a manner that prevents rotation of said lead with respect to said flexible tubular outer member, such that the lead can be positioned in a desired location by at least one of advancing and withdrawing and rotating said stylet.

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