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Laser bonding of angioplasty balloon catheters

DC
  • US 5,267,959 A
  • Filed: 11/29/1991
  • Issued: 12/07/1993
  • Est. Priority Date: 11/29/1991
  • Status: Expired due to Term
First Claim
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1. A balloon catheter comprising:

  • an elongate pliable length of catheter tubing formed of a polymeric material and having a proximal end and a distal end;

    a polymeric dilatation balloon mounted to the catheter tubing near the distal end and in surrounding relation to the catheter tubing, said balloon including a medial region, proximal and distal neck regions each substantially smaller in diameter than the medial region, and proximal and distal tapered regions between the medial region and the proximal and distal neck regions, respectively, each of the tapered regions diverging in the direction from its associated neck region to the medial region, the distal neck region being contiguous with the catheter tubing to define a distal interface; and

    a distal fluid tight fusion bond along the interface of the catheter tubing and the distal neck region, said fusion bond being spaced apart from the distal tapered region by a distance of at most 0.030 inches, and wherein the distal tapered region is substantially free of crystallization.

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