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Anti-obesity balloon placement system

  • US 4,723,547 A
  • Filed: 05/07/1985
  • Issued: 02/09/1988
  • Est. Priority Date: 05/07/1985
  • Status: Expired due to Fees
First Claim
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1. An apparatus for placing an anti-obesity balloon in a patient, the balloon having a self-sealing plug which is pierceable by a needle, the apparatus comprising:

  • an insertion catheter comprising an inner, elongate tube;

    an outer, elongate sheath;

    the inner tube being slidable within the sheath;

    a hollow needle mounted at the distal end of the insertion catheter, the needle being attached to the distal end of the inner tube, the needle being adapted to pierce the plug;

    the catheter having conduit means in communication with the needle to enable a balloon attached to the needle to be inflated and deflated;

    said catheter including means for sheilding the needle to enable withdrawal of the needle without exposing the tip of the needle to the balloon or to the patient, said shielding means comprising the needle being mounted for movement between a first position in which the needle is extended out of the distal end of the insertion catheter and a second position in which the needle is withdrawn into the distal end of the insertion catheter and means for effecting said movement of the needle between said first and second positions;

    said inner tube and outer sheath being relatively movable between positions in which said needle is in said first and said second positions;

    handle means at the proximal end of the insertion catheter, the handle means being connected to each of the sheath and the tube, the handle means being constructed and arranged to effect said relative movement between the inner tube and outer sheath;

    said handle means having two lockable positions corresponding, respectively, to said first position and said second position of the needle.

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