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US2463149A - Endotracheal intubating stylet - Google Patents

Endotracheal intubating stylet Download PDF

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Publication number
US2463149A
US2463149A US78766447A US2463149A US 2463149 A US2463149 A US 2463149A US 78766447 A US78766447 A US 78766447A US 2463149 A US2463149 A US 2463149A
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Prior art keywords
tube
portion
end
handle
stylet
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Expired - Lifetime
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Curtis W Caine
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Curtis W Caine
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04Tracheal tubes
    • A61M16/0488Mouthpieces; Means for guiding, securing or introducing the tubes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04Tracheal tubes
    • A61M16/0402Special features for tracheal tubes not otherwise provided for
    • A61M16/0418Special features for tracheal tubes not otherwise provided for with integrated means for changing the degree of curvature, e.g. for easy intubation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/01Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/09Guide wires

Description

March 1, 1949.- c, w. c l E ENDOTRACHEAL INTUBATING STYLET Filed Nov. 24, 1947 IN VEN TOR.

Patented Mar. 1,1949

UNITED STATES PTENT OFFICE 2 Claims.

The present invention relates to a stylet adapted for use with an endotraoheal tube or catheter to facilitate insertion of the latter into the trachea.

As endotracheal tubes or catheters are usually made of soft flexible rubber or the like, it is very difficult to direct the, same between the vocal chords. In order to effectively overcome this difficulty, I provide an improved stylet adapted to be inserted in the tube to stiffen it and to anteriorly curve and distend its distal end into a laterally flattened cross sectional form substantially resembling the shape of the laryngeal opening. When the tube is thus conditioned, intubation may be accomplished with facility and speed.

To facilitate manipulation of the device during intubation and to fix the tube in proper relation to the stylet regardless of the length of the tube,

the stylet includes a relatively long stiff wire or rod having an elongated handle slidably adjustable on its proximal portion. The distal end of the handle is reduced to make a close sliding fit within the proximal end of the tube or within the usual coupling member which may be provided on the proximal end of the tube for use in connecting it to the control valve of apparatus used to supply oxygen or other gas to the lungs through the inserted tube. The distal portion of the wire or rod is gradually curved anteriorly and is composed of forwardly diverging spring arms adapted to distend antero-posteriorly and flatten laterally the corresponding portion of the tube.

The exact nature of the present invention will become apparent from the following description when considered in connection with the accompanying drawings, in which:

Figure 1 is side elevational view, partly broken away, of a stylet constructed in accordance with the present invention.

Figure 2 is a central longitudinal section, partly broken away, of the stylet of Figure 1 operatively associated with an endotracheal tube or catheter.

Figure 3 is a transverse section taken on line 3-3 of Figure 2.

Figure 4 is a transverse section taken on line 4-4 of Figure 2.

The present stylet is adapted for use in connection with a conventional endotracheal tube or catheter 5 which has a port 6 through the distal end thereof, and which is shown as provided at its proximal end with the usual coupling member I for use in connecting the tube or catheter to the control valve of apparatus commonly used to supply oxygen or other gas to the lungs through the tube when the latter is inserted into the trachea. This tube orcatheter is made of soft flexible rubber or the like, so that without a stylet it is difficult to direct the same between the vocal chords.

In order to facilitate insertion of the tube or catheter, I have provided an improved stylet which includes a relatively long stiff wire or rod t, the major portion of which is straight, and the remaining distal portion 9 of which is gradually curved anteriorly. The rod 8 is somewhat longer than the longest type of endotracheal tube, and the distal end portion thereof is composed of a pair of forwardly diverging spring arms lil having inturned free forward ends H. The arms it are normally tensioned to spring apart in such relation that they will flatten the distal portion of the tube 5 when disposed within the same as shown in Figure 2, thereby giving this portion of the tube a cross sectional form substantially resembling the shape of the laryngeal opening. The stylet further includes an elongated handle [2 having an axial bore 53 through which the rod 8 slidably extends. Thus, the handle i2 is slidably adjustable on the proximal portion of the rod 8, and it is provided with a set screw M which may be tightened into engagement with the rod 8 to secure the handle in adjusted position. As seen in Figure 4, the rod 8 is flattened at one side so that when it is impinged by the set screw M, relative rotation of the rod 8 and handle I2 is prevented. It will be seen that the distal end of handle i2 is reduced to provide a cylindrical portion l5 adapted to make a close sliding fit within the coupling member I and thereby effectively connect the proximal end of the tube with the handle so that they will not freely turn relative to each other. The reduced end portion i5 is provided with a tapered extension it which gradually reduces in diameter forwardly and acts to guide the coupling member 1 or the end of a tube not provided with such a coupling, onto the reduced end portion l5.

In using the present stylet, the parts thereof are lubricated to facilitate insertion of the same into the tube 5. Such insertion is carried out so that the distal ends I l of the arms It are located a slight distance inwardly of the open distal end of the tube 5 as shown in Figure 2. The handle [2 is then slid forwardly on rod 8 so as to enter the reduced portion l5 of the handle within the coupling l as shown. The set screw [4 is then tightened so as to secure the handle in this properly adjusted position, and it will be apparent that the degree of adjustment of the handle l2 which is necessary will depend upon the particular length of the tube 5 being employed. In Figure 3 the manner in which the arms distend and flatten the distal portion of the tube 5 will be apparent. After externally lubricating the tube 5, the assembly of Figure 2 will be held in one hand by grasping the handle I2 in a manner similar to that in. which an ordinary pencil is held while writing. The tube 5,, thus conditioned, may then be readily inserted into the trachea, no difficulty being experienced in directing the tube between the vocal chords. When intubation has been properly accomplished, the stylet is withdrawn from the tube, and the latter may then be coupled to the associated apparatus for supplying oxygen or other gas to the lungs through the inserted tube.

It will be understood that changes in the details herein described and illustrated may be made by tthose skilled in the art without departing from the spirit and scope of the invention as claimed.

:bored handle slidably adjustable on the proximal portion of said rod and' having a reduced distal portion adapted to make a close sliding fit Within the proximal end of the tube, the distal portion of the rod being composed of a pair of forwardly diverging spring arms tensioned to spring apart REFERENCES CITED The following references are of record in the file --of this patent:

UNITED STATES PATENTS Name Date Wappler, May 24, 1938 .Kleine July ,4, 1939 FOREIGN PATENTS Number Number Country flDate France Jan=. 18, 1906 France -LNOVQ 4, 1913 France -"Jan. 27',' 1921 OTHER REFERENCES Page 42 of Catalogue Catheters,=by- Anode, published in 1938 by :American Cystoscope Makers, 450-Whitlock Avenue, New' i lork city, New York.

US2463149A 1947-11-24 1947-11-24 Endotracheal intubating stylet Expired - Lifetime US2463149A (en)

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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867945A (en) * 1973-05-14 1975-02-25 Wendell M Long Catheter stylets
US4166467A (en) * 1977-08-08 1979-09-04 Metatech Corporation Bite block for endotracheal tube
DE3334546A1 (en) * 1982-09-24 1984-03-29 Viridian Inc to initiate Fuehrungssonde for a hose arrangement and suction of fluid in and out of the gastrointestinal tract of a patient
US4449522A (en) * 1981-05-19 1984-05-22 Dragerwerk A.G. Positioning device for use with a tracheal tube which is insertable into a person's trachea for respiration purposes
US4659328A (en) * 1984-03-12 1987-04-21 Biosearch Medical Products, Inc. Stylet
US4949716A (en) * 1988-10-31 1990-08-21 Medical Devices, Inc. Nasal intubation adjunct
US5058577A (en) * 1989-05-09 1991-10-22 Gary Six Flexible tip stylet for use with an endotracheal intubation device
US5111829A (en) * 1989-06-28 1992-05-12 Boston Scientific Corporation Steerable highly elongated guidewire
US5507279A (en) * 1993-11-30 1996-04-16 Fortune; John B. Retrograde endotracheal intubation kit
US5791341A (en) * 1995-12-19 1998-08-11 Bullard; James Roger Oropharyngeal stent with laryngeal aditus shield and nasal airway with laryngeal aditus shield
US5850832A (en) * 1997-06-23 1998-12-22 Chu; Kyo Y. Laryngeal mask airway insertion guide
US20020066450A1 (en) * 2000-12-02 2002-06-06 Bonutti Peter M. Tracheal intubination
US6463927B1 (en) * 1997-03-27 2002-10-15 Smiths Group Plc Medical tube assemblies
US20020195103A1 (en) * 2001-03-05 2002-12-26 Government Of The United States, As Represented By The Secretary Of The Army Intubation device and method
US6651665B1 (en) * 2002-02-19 2003-11-25 Ibionics, Inc. Rotating magnetic guide intubation system
US6672305B2 (en) * 2001-02-26 2004-01-06 Parker Medical Limited Partnership Shallow throat orotracheal intubation guide
US6701918B2 (en) * 2002-02-19 2004-03-09 Ibionics Corporation Magnetically guided device for insertion through a nasal passageway
US6715491B2 (en) * 2002-02-19 2004-04-06 Ibionics Corporation Magnetically orienting laryngeal elevator blade
US20080017195A1 (en) * 2006-07-19 2008-01-24 Yoshida Douglas K Extendable lighted intubation stylet
US20090050146A1 (en) * 2007-08-23 2009-02-26 The Cleveland Clinic Foundation Apparatus and method for intubating an airway of a patient
US20110163227A1 (en) * 2008-09-23 2011-07-07 Makarov Alexander A Ion Trap for Cooling Ions
US20130178822A1 (en) * 2009-12-16 2013-07-11 Eyevation, Llc Delivery and extraction devices
US9526856B2 (en) 2011-12-15 2016-12-27 The Board Of Trustees Of The Leland Stanford Junior University Devices and methods for preventing tracheal aspiration
US9770194B2 (en) 2013-11-05 2017-09-26 Ciel Medical, Inc. Devices and methods for airway measurement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR357892A (en) * 1905-09-20 1906-01-18 Paul Lebreton bladder catheter
FR459391A (en) * 1913-05-29 1913-11-04 Jean Eynard Improvements to ureteral catheters
FR512640A (en) * 1919-08-30 1921-01-27 Alfred Ernest Plisson Improvement made to urinary catheters tell remains probes
US2118631A (en) * 1935-04-03 1938-05-24 Wappler Frederick Charles Catheter stylet
US2164926A (en) * 1936-06-02 1939-07-04 American Cystoscope Makers Inc Catheter stylet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR357892A (en) * 1905-09-20 1906-01-18 Paul Lebreton bladder catheter
FR459391A (en) * 1913-05-29 1913-11-04 Jean Eynard Improvements to ureteral catheters
FR512640A (en) * 1919-08-30 1921-01-27 Alfred Ernest Plisson Improvement made to urinary catheters tell remains probes
US2118631A (en) * 1935-04-03 1938-05-24 Wappler Frederick Charles Catheter stylet
US2164926A (en) * 1936-06-02 1939-07-04 American Cystoscope Makers Inc Catheter stylet

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867945A (en) * 1973-05-14 1975-02-25 Wendell M Long Catheter stylets
US4166467A (en) * 1977-08-08 1979-09-04 Metatech Corporation Bite block for endotracheal tube
US4449522A (en) * 1981-05-19 1984-05-22 Dragerwerk A.G. Positioning device for use with a tracheal tube which is insertable into a person's trachea for respiration purposes
DE3334546A1 (en) * 1982-09-24 1984-03-29 Viridian Inc to initiate Fuehrungssonde for a hose arrangement and suction of fluid in and out of the gastrointestinal tract of a patient
US4659328A (en) * 1984-03-12 1987-04-21 Biosearch Medical Products, Inc. Stylet
US4949716A (en) * 1988-10-31 1990-08-21 Medical Devices, Inc. Nasal intubation adjunct
US5058577A (en) * 1989-05-09 1991-10-22 Gary Six Flexible tip stylet for use with an endotracheal intubation device
USRE35595E (en) * 1989-05-09 1997-08-26 Six; Gary Flexible tip stylet for use with an endotracheal intubation device
US5111829A (en) * 1989-06-28 1992-05-12 Boston Scientific Corporation Steerable highly elongated guidewire
US5507279A (en) * 1993-11-30 1996-04-16 Fortune; John B. Retrograde endotracheal intubation kit
US5791341A (en) * 1995-12-19 1998-08-11 Bullard; James Roger Oropharyngeal stent with laryngeal aditus shield and nasal airway with laryngeal aditus shield
US6463927B1 (en) * 1997-03-27 2002-10-15 Smiths Group Plc Medical tube assemblies
US5850832A (en) * 1997-06-23 1998-12-22 Chu; Kyo Y. Laryngeal mask airway insertion guide
US20020066450A1 (en) * 2000-12-02 2002-06-06 Bonutti Peter M. Tracheal intubination
US20110224539A1 (en) * 2000-12-02 2011-09-15 Bonutti Peter M Methods for positioning an ultrasonic catheter
US7320319B2 (en) 2000-12-02 2008-01-22 Marctec, Llc Medicant delivery system and method
US20050103333A1 (en) * 2000-12-02 2005-05-19 Bonutti Peter M. Medical device positioning system and method
US20050103334A1 (en) * 2000-12-02 2005-05-19 Bonutti Peter M. Medicant delivery system and method
US6820614B2 (en) * 2000-12-02 2004-11-23 The Bonutti 2003 Trust -A Tracheal intubination
US20090216066A1 (en) * 2000-12-02 2009-08-27 Bonutti Peter M Magnetically assisted medication delivery method
US6672305B2 (en) * 2001-02-26 2004-01-06 Parker Medical Limited Partnership Shallow throat orotracheal intubation guide
US20020195103A1 (en) * 2001-03-05 2002-12-26 Government Of The United States, As Represented By The Secretary Of The Army Intubation device and method
US20100059048A1 (en) * 2001-03-05 2010-03-11 Government Of The United States As Represented By The Secretary Of The Army Intubation device and method
US7552729B2 (en) * 2001-03-05 2009-06-30 The United States Of America As Represented By The Secretary Of The Army Intubation device and method
US6701918B2 (en) * 2002-02-19 2004-03-09 Ibionics Corporation Magnetically guided device for insertion through a nasal passageway
US6651665B1 (en) * 2002-02-19 2003-11-25 Ibionics, Inc. Rotating magnetic guide intubation system
US6715491B2 (en) * 2002-02-19 2004-04-06 Ibionics Corporation Magnetically orienting laryngeal elevator blade
US20080017195A1 (en) * 2006-07-19 2008-01-24 Yoshida Douglas K Extendable lighted intubation stylet
US8746239B2 (en) 2006-07-19 2014-06-10 Douglas K. Yoshida Extendable lighted intubation stylet
US20090050146A1 (en) * 2007-08-23 2009-02-26 The Cleveland Clinic Foundation Apparatus and method for intubating an airway of a patient
US20110163227A1 (en) * 2008-09-23 2011-07-07 Makarov Alexander A Ion Trap for Cooling Ions
US8642948B2 (en) * 2008-09-23 2014-02-04 Thermo Fisher Scientific (Bremen) Gmbh Ion trap for cooling ions
US20130178822A1 (en) * 2009-12-16 2013-07-11 Eyevation, Llc Delivery and extraction devices
US9381111B2 (en) * 2009-12-16 2016-07-05 Dyson Hickingbotham Delivery and extraction devices
US9526856B2 (en) 2011-12-15 2016-12-27 The Board Of Trustees Of The Leland Stanford Junior University Devices and methods for preventing tracheal aspiration
US9770194B2 (en) 2013-11-05 2017-09-26 Ciel Medical, Inc. Devices and methods for airway measurement

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