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Method of making elongated medical devices

  • US 8,022,331 B2
  • Filed: 01/15/2007
  • Issued: 09/20/2011
  • Est. Priority Date: 02/26/2003
  • Status: Expired due to Fees
First Claim
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1. A method of manufacturing a medical device, comprising the steps of:

  • providing a core wire having a proximal section and a distal section, the distal section of the core wire formed from a metal or metal alloy, the distal section including a widened diameter portion at a distal end of the core wire;

    providing a tubular body member having a proximal portion and a distal portion, the tubular body defining a lumen therethrough having an inner diameter configured to fit over an outer diameter of the widened diameter portion;

    attaching a tip to the distal portion of the tubular member to form a distal cap member comprising the tubular body member and the tip, the distal cap member formed from a metal or metal alloy that is welding-compatible with the metal or metal alloy of the distal section of the core wire;

    after forming the distal cap member, inserting the widened diameter portion of the distal section of the core wire into the lumen of the tubular body; and

    after inserting the widened diameter portion into the lumen, welding the distal cap member to the distal section of the core wire;

    wherein the widened diameter portion of the distal section of the core wire is a heat sink during the welding.

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