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Auto-inflating catheter cuff

  • US 5,395,330 A
  • Filed: 09/04/1992
  • Issued: 03/07/1995
  • Est. Priority Date: 06/13/1990
  • Status: Expired due to Term
First Claim
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1. A perfusion catheter for introduction into a body cavity comprising:

  • a catheter tube of flexible plastic composition having a tube wall with an outer surface and an inner surface defining a central lumen,said central lumen having a proximal end for introduction of a lumen fluid and a distal end with an opening for introducing the lumen fluid into a body cavity,a self-inflating cuff adjacent to said distal end externally enclosing a portion of said tube and sealed to said outer surface,a pair of openings extending through said tube wall from said central lumen into said cuff, said openings being spaced from each other lengthwise of said tube and being sized relative to each other to inflate said cuff with lumen fluid,an elongated linear stiffening element embedded within said tube wall between said inner and outer surfaces parallel to said central lumen and extending lengthwise of said tube to stiffen said tube against bending and kinking, anda plug in said central lumen between said pair of openings for directing lumen fluid through said cuff.

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