Audio guided intubation stylet

• US 6,164,277 A
• Filed: 12/08/1998
• Issued: 12/26/2000
• Est. Priority Date: 12/08/1998
• Status: Expired due to Fees

• Current Assignee: John H. Merideth
• Original Assignee: John H. Merideth
• Inventors: Merideth, John H.
• Primary Examiner(s): Dawson, Glenn K.
• Application Number:
  US09/206,891
• Time in Patent Office: 749 Days
• Field of Search: 128/200.24, 128/204.18, 128/207.14-107.17, 128/207.29, 128/898, 606/108
• US Class Current: 128/207.14
• CPC Class Codes: A61B 7/003 Detecting lung or respiration noise
• CPC Class Codes: A61M 16/0488 Mouthpieces; Means for guiding, securing or introducing the tubes guiding or introducing with laryngoscopes A61B1/267; holding devices on the body A61M25/02
• CPC Class Codes: A61M 2205/3375 Acoustical, e.g. ultrasonic, measuring means
• CPC Class Codes: Y10S 977/876 Nanotube tip

Abstract

A intubation stylet having a cylindrical guide member is disclosed wherein the guide member has a proximal end, a distal end, and an intermediate section therebetween. The distal end may include a microphone operatively coupled to a sound processing device having a speaker or earphone. The stylet may be passed through an endotracheal tube and into the mouth or nose of a breathing patient. As the distal end is passed into the mouth, the microphone detects audible sounds produced by air movement within the upper airway and generates a raw sound signal based on the audible sounds. The sound processing device generates an amplified sound output signal based on the raw signal and transmits the amplified signal through a speaker. The amplified sounds may then be used as audio cues to assist in guiding the stylet through the larynx and into the trachea. The endotracheal tube may be advanced over the stylet guide member after which the stylet may be removed. In one embodiment, the guide member includes a channel for delivering medicinal substances such as oxygen or anesthetic. The guide member may also include an angulation wire for angulating the distal end relative to the intermediate section to assist in positioning the distal end.

Claims

1. A method for intubating a breathing patient, the method comprising:

inserting an endotracheal tube over an intubating stylet guide member wherein the guide member has a distal end;

inserting the distal end into an airway of the patient wherein the distal end includes a microphone;

detecting audible sounds at the microphone caused by air passing through the airway;

generating a raw signal based on the detected audible sounds;

receiving and processing the raw signal with a sound processing device; and

generating an output signal based on the raw signal and transmitting the output signal through a sound output device.

2. The method of claim 1 further comprising the step of amplifying the output signal.

3. The method of claim 2 further including the step of using the output signal as an audio cue to assist in positioning the distal end.

4. The method of claim 3 further comprising the step of manipulating an angulation wire within the guide member to position the distal end.

5. The method of claim 4 further comprising the step of delivering a medicinal fluid through a channel within the guide member.

6. The method of claim 5 further comprising the step of removing the guide member once the endotracheal tube is properly positioned, leaving the endotracheal tube in place.