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Rapid exchange/perfusion angioplasty catheter

  • US 6,007,517 A
  • Filed: 08/19/1996
  • Issued: 12/28/1999
  • Est. Priority Date: 08/19/1996
  • Status: Expired due to Fees
First Claim
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1. A perfusion balloon catheter useful for angioplasty, comprising,a catheter shaft having an outer surface, andconcentrically mounted on and encircling said shaft, an inflatable dilation balloon useful for angioplasty, the balloon having a longitudinal axis and comprising:

  • an inflatable space defined by an outer closed surface of the balloon which contacts an inner surface of a blood vessel when said balloon is inflated in said blood vessel, andsaid balloon having distal and proximal ends proximate said catheter shaft,said balloon when inflated having an interior with at least one laterally offset walled inner channel formed in its interior and disposed between said outer surface of said shaft, which inner channel extends from and terminates at said proximal and distal ends,said inner channel comprising a wall defining a closed surface which is distinct from the surface of said shaft and which is laterally displaced from the axis of the balloon so as to have a portion closes to said balloon outer surface and a portion closes to said shaft, said portion closest to said balloon outer surface adjoining said balloon outer surface along a line extending from said balloon proximal end to said distal end,whereby when said balloon is inflated in a blood vessel and said outer surface is in contact with the inner surface of said blood vessel, blood flows through said inner channel from the proximal to the distal end of said balloon.

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