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Intra-aortic balloon assembly with hemostasis device

  • US 5,120,299 A
  • Filed: 11/07/1990
  • Issued: 06/09/1992
  • Est. Priority Date: 05/22/1987
  • Status: Expired due to Term
First Claim
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1. An intra-aortic balloon apparatus comprising:

  • a balloon catheter having a proximal end and a distal end;

    an inflatable and deflatable balloon bladder sealidly attached to the distal end of said balloon catheter for percutaneous insertion into the femoral artery of patient;

    a hemostasis device having a proximal end and a distal end, said hemostasis device slidably mounted to said balloon catheter between said balloon bladder and said proximal end of said balloon catheter, said hemostasis device including;

    i) a first segment formed at said distal end of said hemostasis device having a constant outside diameter, said first segment being of a dimension which is as small as possible so as to pass through the opening made by the passage of said balloon bladder through the percutaneous insertion site and into said femoral artery;

    ii) a second segment for insertion into said percutaneous insertion site opening positioned proximally with respect to said first segment, said second segment having a constant diameter larger than the outside diameter of said first segment and being of a dimension so as to fill said opening to stop any bleeding from said femoral artery at said insertion site, yet permit blood flow along said femoral artery;

    iii) a transition segment connecting said first segment to said second segment, said transition segment having a dimension so as to allow essentially immediate transition from said first segment to said second segment during insertion of said hemostasis device into said percutaneous insertion site opening, yet at the same time minimize any resistance encountered during the insertion of said second segment through the patient'"'"'s skin;

    iv) said hemostasis device having an inside diameter dimension so as to provide a clearance between the inside of said hemostasis device at said distal end and said balloon catheter of between about 2 to 3 thousandths of an inch; and

    sealing means releasably attached to the proximal end of said hemostasis device for preventing bleeding between said hemostasis device and said balloon catheter after insertion of said balloon bladder and hemostasis device in the patient.

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