Patil Intubation Guide

WLMD ID: alss, alst
This device, designed by anesthesiologist Vijayalakshmi U. Patil, M.D., is used to help with intubation. Intubation refers to the insertion of an endotracheal tube (breathing tube) through the mouth, or nose, and into the trachea (windpipe). This is done to maintain an open passage for gases to move in and out of a patient’s lungs. The Patil Audible Intubation Guide, also called an ‘audible indicator,’ fits on the outside end of the endotracheal tube and makes a whistling sound as air moves in and out of the tube. The closer the tube gets to the opening of the trachea (or glottis), the louder the sounds become. Dr. Patil’s Intubation Guide is most often used when the patient’s glottis cannot be viewed by the use of a laryngoscope and fiberoptic endoscopy equipment is not readily available.

Dr. Patil practiced and taught anesthesiology at the State University of New York (SUNY) Upstate Medical Center in Syracuse, New York. She specialized in airway management and was a pioneer in techniques for difficult intubation. In addition to writing and teaching, she has invented a number of aids for intubation, including a face mask for endoscopy and a gauge to assess a patient’s airway before intubation. Airway management refers to a broad number of approaches aimed at keeping an open pathway for gases to move in and out of a patient's lungs.

Catalog Record: Patil Intubation Guide

Catalog records alss and alst

Access Key: alss

Accession No.: 2008-06-2-1 BP 6

Title: [Patil intubation guide, audible.]

Author: Patil, Vijayalakshmi U.

Title variation: Alt Title
Title: Patil audible indicator.

Title variation: Alt Title
Title: Patil audible intubation guide.

Publisher: [San Marcos, California?] : [Anesthesia Associates, Inc.?], [between 1980 and 2008?].

Physical Descript: 1 intubation aid : aluminum, silicone ; 3 x 3 x 2.5 cm.

Subject: Intubation, Intratracheal – instrumentation.
Subject: Difficult Airway – management.
Subject: Airway Management.

Note Type: General
Notes: The early year in the date range for the possible year of manufacture is an
estimate based on the earliest document in which the Patil intubation
guide-audible is found to be mentioned (Northway-Meyer, 1989): a patent filed
in 1986 and approved in 1989. The end year is based on the year that this
device was donated to the WLM. he date range could change if documentation
or expert opinion indicate the range should be corrected.

Note Type: General
Notes: Title taken from the 2014 Anesthesia Associates, Inc (AincA) catalog.

Note Type: Citation
Notes: Intubation aids for difficult airways. AincA. San Marcos, CA: Anesthesia
Associates, Inc.; 2014:16. https://www.ainca.com/AincA_CATALOG_SCREEN.pdf.
Accessed April 29, 2015.

Note Type: Citation
Notes: Murphy MF, Doyle DJ. Airway evaluation. In: Hung OR, Murphy MF, eds.
Management of the Difficult and Failed Airway. New York: McGraw Hill Medical;
2008:6-7.

Note Type: Citation
Notes: Northway-Meyer R, inventor. Apparatus and method for pulmonary ventilation of
a patient concurrent with fiberoptic respiratory tract examination and
tracheal intubation. US patent 4,848,331. July 18, 1989. Column 9. www.google
com/patents/US4848331. Accessed April 29, 2015. [The application was filed on
November 14, 1986.]

Note Type: Citation
Notes: Patil VU, Stehling LC, Zauder HL. Instrumentation and auxiliary equipment.
Fiberoptic Endoscopy in Anesthesia. Chicago: Year Book Medical Publishers,
Inc.; 1983:11.

Note Type: Citation
Notes: Patil VU, Stehling LC, Zauder HL Predicting the difficulty of intubation
utilizing an intubation gauge. Anesthesiol Rev. 1983;10(8):32-33.

Note Type: Physical Description
Notes: One aid for intubation; The measurements and this description are based on a
patient perspective (i.e. the port attachment was treated as the ‘front’; A
short cylindrical housing, made to attach to the end of an endotracheal tube;
It measures approximately 2.6 x 2.6 x 2.2 cm; At the distal end is a re
silicone diaphragm with a hole in the center; The diaphragm ‘whistles’ with
patient breathing; This magnification of breath sounds acts as an aid during
blind nasotracheal and orotracheal intubation.

Note Type: Reproduction
Notes: Photographed with a second Patil audible indicator by Mr. Steve Donisch
January, 2015.

Note Type: Acquisition
Notes: Donated to the WLM by the inventor, Vijayalakshmi U. Patil, MD.

Note Type: Historical
Notes: This device, designed by anesthesiologist Vijayalakshmi U. Patil, M.D., is used to help with intubation. Intubation refers to the insertion of an endotracheal tube (breathing tube) through the mouth, or nose, and into the trachea (windpipe). This is done to maintain an open passage for gases to move in and out of a patient’s lungs. The Patil Audible Intubation Guide, also called an ‘audible indicator,’ fits on the outside end of the endotracheal tube and makes a whistling sound as air moves in and out of the tube. The closer the tube gets to the opening of the trachea (or glottis), the louder the sounds become. Dr. Patil’s Intubation Guide is most often used when the patient’s glottis cannot be viewed by the use of a laryngoscope and fiberoptic endoscopy equipment is not readily available.

Dr. Patil practiced and taught anesthesiology at the State University of New York (SUNY) Upstate Medical Center in Syracuse, New York. She specialized in airway management and was a pioneer in techniques for difficult intubation. In addition to writing and teaching, she has invented a number of aids for intubation, including a face mask for endoscopy and a gauge to assess a patient’s airway before intubation. Airway management refers to a broad number of approaches aimed at keeping an open pathway for gases to move in and out of a patient’s lungs.

Note Type: Publication
Notes: Patil VU, Stehling LC, Zauder HL An adjustable laryngoscope handle for
difficult intubations. Anesthesiology. 1984;60(6):609. https://anesthesiology.
pubs.asahq.org/article.aspx?articleid=1955955. Accessed April 29, 2015.

Note Type: Publication
Notes: Patil VU, Stehling LC, Zauder HL, Chilcoat RT. An aid to blind endotracheal
intubation. Anesth Analg. 1984;63(9):882-883. https://journals.lww.
com/anesthesia-analgesia/Citation/1984/09000/An_Aid_to_Blind_Endotracheal_Int
bation_.22.aspx. Accessed April 29, 2015.

Note Type: Exhibition
Notes: Selected for the WLM website (noted January, 2015).

Access Key: alst

Accession No.: 2008-06-2-1 BP 2

Title: [Patil intubation guide, audible.]

Author: Patil, Vijayalakshmi U.

Title variation: Alt Title
Title: Patil audible indicator.

Publisher: [San Marcos, California?] : [Anesthesia Associates, Inc.?], [between 1980 and 2008?].

Physical Descript: 1 intubation aid : aluminum, silicone ; 3 x 3 x 2.5 cm.

Subject: Intubation, Intratracheal – instrumentation.
Subject: Difficult Airway – management.
Subject: Airway Management – instrumentation.

Note Type: General
Notes: The early year in the date range for the possible year of manufacture is an
estimate based on the earliest document in which the Patil intubation
guide-audible is found to be mentioned (Northway-Meyer, 1989): a patent filed
in 1986 and approved in 1989. The end year is based on the year that this
device was donated to the WLM. The date range could change if documentation
or expert opinion indicate the range should be corrected.

Note Type: General
Notes: Title taken from the 2014 Anesthesia Associates, Inc (AincA) catalog.

Note Type: Citation
Notes: Intubation aids for difficult airways. AincA. San Marcos, CA: Anesthesia
Associates, Inc.; 2014:16. https://www.ainca.com/AincA_CATALOG_SCREEN.pdf.
Accessed April 29, 2015.

Note Type: Citation
Notes: Murphy MF, Doyle DJ. Airway evaluation. In: Hung OR, Murphy MF, eds.
Management of the Difficult and Failed Airway. New York: McGraw Hill Medical;
2008:6-7.

Note Type: Citation
Notes: Northway-Meyer R, inventor. Apparatus and method for pulmonary ventilation of
a patient concurrent with fiberoptic respiratory tract examination and
tracheal intubation. US patent 4,848,331. July 18, 1989. Column 9. www.google
com/patents/US4848331. Accessed April 29, 2015. [The application was filed on
November 14, 1986.]

Note Type: Citation
Notes: Patil VU, Stehling LC, Zauder HL. Instrumentation and auxiliary equipment.
Fiberoptic Endoscopy in Anesthesia. Chicago: Year Book Medical Publishers,
Inc.; 1983:11.

Note Type: Citation
Notes: Patil VU, Stehling LC, Zauder HL Predicting the difficulty of intubation
utilizing an intubation gauge. Anesthesiol Rev. 1983;10(8):32-33.

Note Type: Physical Description
Notes: One aid for intubation; The measurements and this description are based on a
patient perspective (i.e. the port attachment was treated as the ‘front’; A
short cylindrical housing, made to attach to the end of an endotracheal tube;
It measures approximately 2.6 x 2.6 x 2.2 cm; At the distal end is a re
silicone diaphragm with a hole in the center; The diaphragm ‘whistles’ with
patient breathing; This magnification of breath sounds acts as an aid during
blind nasotracheal and orotracheal intubation.

Note Type: Reproduction
Notes: Photographed with a second Patil audible indicator by Mr. Steve Donisch
January, 2015.

Note Type: Acquisition
Notes: Donated to the WLM by the inventor, Vijayalakshmi U. Patil, MD.

Note Type: Historical
Notes: This device, designed by anesthesiologist Vijayalakshmi U. Patil, M.D., is used to help with intubation. Intubation refers to the insertion of an endotracheal tube (breathing tube) through the mouth, or nose, and into the trachea (windpipe). This is done to maintain an open passage for gases to move in and out of a patient’s lungs. The Patil Audible Intubation Guide, also called an ‘audible indicator,’ fits on the outside end of the endotracheal tube and makes a whistling sound as air moves in and out of the tube. The closer the tube gets to the opening of the trachea (or glottis), the louder the sounds become. Dr. Patil’s Intubation Guide is most often used when the patient’s glottis cannot be viewed by the use of a laryngoscope and fiberoptic endoscopy equipment is not readily available.

Dr. Patil practiced and taught anesthesiology at the State University of New York (SUNY) Upstate Medical Center in Syracuse, New York. She specialized in airway management and was a pioneer in techniques for difficult intubation. In addition to writing and teaching, she has invented a number of aids for intubation, including a face mask for endoscopy and a gauge to assess a patient’s airway before intubation. Airway management refers to a broad number of approaches aimed at keeping an open pathway for gases to move in and out of a patient’s lungs.

Note Type: Publication
Notes: Patil VU, Stehling LC, Zauder HL An adjustable laryngoscope handle for
difficult intubations. Anesthesiology. 1984;60(6):609. https://anesthesiology.
pubs.asahq.org/article.aspx?articleid=1955955. Accessed April 29, 2015.

Note Type: Publication
Notes: Patil VU, Stehling LC, Zauder HL, Chilcoat RT. An aid to blind endotracheal
intubation. Anesth Analg. 1984;63(9):882-883. https://journals.lww.
com/anesthesia-analgesia/Citation/1984/09000/An_Aid_to_Blind_Endotracheal_Int
bation_.22.aspx. Accessed April 29, 2015.

Note Type: Exhibition
Notes: Selected for the WLM website (noted January, 2015).