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Thin wall endotracheal tube

  • US 5,429,127 A
  • Filed: 07/06/1993
  • Issued: 07/04/1995
  • Est. Priority Date: 09/12/1991
  • Status: Expired due to Term
First Claim
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1. A two-stage endotracheal tube which comprises:

  • a first generally cylindrical portion having a first diameter which, when in use, is inserted into a subject'"'"'s trachea, beyond the subject'"'"'s larynx;

    a second generally cylindrical portion having a second diameter which, when in use, is positioned near the subject'"'"'s mouth, said second diameter being greater than said first diameter;

    a tapered portion connecting said first and second generally cylindrical portions, a length of said second generally cylindrical portion adjacent said tapered portion being non-circularly shaped so as to be complementary to a subject'"'"'s glottis; and

    a plurality of sealing means provided on said non-circular length of said second generally cylindrical portion, said plurality of seal means comprising thin, pliable gills which extend outward from said non-circular length of said second generally cylindrical portion, said gills having a thickness of about 0.02 to 0.075 mm,wherein the wall thickness of said first and second generally cylindrical portions and said tapered portion is between about 0.15 mm and 0.35 mm, and said gills have a diameter which is between 50-200% of a diameter of said non-circular portion of said second generally cylindrical portion.

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