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Endotracheal tube with movable endobronchial blocker for one-lung anesthesia

  • US 4,453,545 A
  • Filed: 04/29/1982
  • Issued: 06/12/1984
  • Est. Priority Date: 05/07/1981
  • Status: Expired due to Term
First Claim
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1. An apparatus adapted to be used for carrying out one-lung anesthesia, comprising:

  • an elongated endotracheal tube adapted to be inserted into a human trachea and having a forward end, a rear end and a length sufficient to allow the forward end of said tube to be positioned in the trachea at a location near the bifurcation of the trachea into right and left main bronchi;

    said tube having wall means and an inner surface, the inner surface of said tube defining an internal central lumen extending lengthwise within said tube, said wall means defining an elongated channel which extends in the lengthwise direction of said tube for almost the entire length of said tube, the axis of said channel being offset radially outwardly from the central axis of said tube and being smaller in cross sectional area than said lumen;

    a first inflatable cuff mounted on the outer periphery of said tube near the forward end thereof, said first cuff being adapted upon inflation thereof to expand into substantial sealing contact with the inner surface of the trachea near the bifurcation thereof; and

    an endobronchial blocker comprising an elongated catheter which is received in said channel for longitudinal sliding movement therein, said catheter having a forward end and at least one duct extending lengthwise therein, and a second inflatable cuff mounted on the outer periphery of said catheter near the forward end thereof, said duct being in communication with said second cuff so that said second cuff can be inflated by gas supplied through said duct, said second cuff being longitudinally slidably receivable within the forward end of said endotracheal tube so that after said endotracheal tube has been inserted into the trachea near the bifurcation thereof, the forward end of said endobronchial blocker can be slidably extended from the forward end of said endotracheal tube into a main bronchus following which said second cuff can be inflated into substantial sealing contact with the inner surface of said main bronchus.

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