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Esophageal intubation detector with indicator

  • US 5,487,731 A
  • Filed: 02/22/1994
  • Issued: 01/30/1996
  • Est. Priority Date: 02/22/1994
  • Status: Expired due to Fees
First Claim
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1. An esophageal intubation detection system for use in determining whether a tip of an endotracheal tube is in a patient'"'"'s esophagus or in the patient'"'"'s trachea, the system comprising:

  • the endotracheal tube including the tube tip;

    volume changing means having a cavity, for changing the volume of cavity, the cavity being connected to the endotracheal tube; and

    an indicator that is activated in response to a significant pressure differential across the indicator and that thereby provides an indication regarding the position of the tube tip, the indicator being pneumatically connected to the endotracheal tube and the volume changing means,whereby, if the tube tip is in the esophagus, the tube tip becomes occluded musing the significant pressure differential across the indicator as the volume of the cavity changes activating the indicator, and if the tube tip is in the trachea, the tube tip is not occluded and there is no significant pressure differential as the volume of the cavity changes.

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