US3169529A - Tracheostomy tube - Google Patents

Tracheostomy tube Download PDF

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US3169529A
US3169529A US283436A US28343663A US3169529A US 3169529 A US3169529 A US 3169529A US 283436 A US283436 A US 283436A US 28343663 A US28343663 A US 28343663A US 3169529 A US3169529 A US 3169529A
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cannula member
inner
member
outer
tracheostomy tube
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US283436A
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Norman Z Koenig
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Norman Z Koenig
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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
    • A61M16/0465Tracheostomy tubes; Devices for performing a tracheostomy; Accessories therefor, e.g. masks, filters
    • 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
    • A61M16/0427Special features for tracheal tubes not otherwise provided for with removable and re-insertable liner tubes, e.g. for cleaning
    • 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

Description

Feb. 16, 1965 N. z, KQENIG 3,169,529

TRACHEOSTOMY TUBE Filed May 27, 1963 2 Sheets-Sheet 1 INVENTOR.

Feb. 16, 1965 N. z. KoENlG 3,169,529

TRAcHEosToMY TUBE Filed May 27, 1963 2 SheeiS-Shee'b 2 www rmel/5y United States Patent O 3,169,529 TRACHEOSTOMY TUBE Norman Z. Koenig, 1941 Malcolm Ave., Los Angeles 25, Calif.

Filed May 27, 1963, Ser. No. 283,436 3 Claims. (Cl. 12S-351) This invention relates to improvements in a tracheostomy tube used for breathing by patients through an opening, surgical or otherwise, in the trachea, and which also permits simultaneously or otherwise, the administration of gases or other vaporized medications to patients through the tracheostomy tube.

Current tracheostomy tubes are made out of metal and have several parts requiring periodic removal and insertion, all to the Agreat discomfort of the patient. For example, typical conventional tracheostomy tubes require the use of a stylet to provide a smooth surface and to prevent the edges of the end of the conventional metal tracheostomy tubes from cutting into the inside membraue of a patients trachea upon insertion. Thus, the stylet must be used for 4the insertion of the conventional tracheostomy tube. During all the time that the tracheostomy tube, with a stylet inside, is being inserted into a patients trachea, the patient is unable to breathe through the tracheostomy tube, since the stylet completely Iblocks the passage of air through the tube and thus blocks the passage of air through the trachea.

Further, each stylet is made in a size tailored to lit a particular size of tracheostomy tube. Thus, once a tracheostomy tube is being used, a stylet of the proper size must -be kept immediately available for use in case of reinsertion of the tracheostomy tube in situations where the tracheostomy tube may be inadvertently dislodged. It is customary practice to tape a stylet of the proper size to the patient or to his hospital bed to make sure that this vital component is readily available to reintroduce a tracheostomy tube should the tube become dis lodged from the patient. Such a dislodgement might very well be a disaster to the patient.

Another disadvantage of the conventional tracheostomy tube is the handicap to surgeons because such tubes are readily plugged up while in use over a period of time. Therefore, periodic removal and reinsertion is required of such tracheostomy tubes. Additional disadvantages of conventional tracheostomy tubes are that such tubes must be re-sterilized each time before being used and that such tubes are conventionally made from metals and are inexible. Consequently, considerable trauma is caused by such tubes to the fragile tissues of the trachea and surrounding areas of the body.

It is therefore, an object of this invention to provide a tracheostomy tube which prevents any obstruction .of the breathing of a patient while the tube is being inserted or removed.

Another object of this invention is to provide a tracheostomy tube which dispenses with the need of an occluding stylet, which may be easily misplaced, for insertion of a tracheostomy tube, and which permits the patient to breathe while the tube is being inserted or removed.

A further obiect of this invention is to provide a tracheostomy tube which may be made of a relatively soft material, such as a plastic, instead of metal, which will considerably reduce trauma to body tissues of the patient.

A still further object of this invention is lto provide a tracheostomy tube which is disposable and need be used only once, thereby dispensing ywith the necessity of repeated sterilization of conventional tracheostomy tubes.

A still further object of this invention is to provide a tracheostomy tube which may be manufactured at relatively little cost and is easy to assemble and to use.

CII

3,169,529 Patented Feb. 16, 1965 A still further object of this invention is to provide a tracheostomy tube which permits the administration of gases or other vaporized medications while the patient is otherwise breathing through the tracheostomy tube.

These and other objects will be more readily understood by reference to the following description and claims, taken in conjunction with the accompanying drawings forming a part hereof, in which FIG. 1 is a side elevational view of an embodiment of my invention showing the inner cannula member partly inserted into the outer cannula member.

FIG. 2 is a View similar to FIG. l but showing the inner cannula member fully inserted into the outer cannula member so -that the exible leaves are fully expanded at the end of the outer cannula member and in a locked position, with hook members.

FIG. 3 is an enlarged section of FIG. 2.

FIG. 4 is an end view of my invention as shown in FIG. l illustrating the leaf members with air spaces between.

FIG. 5 is an enlarged sec-tion similar to FIG. 3 showing an alternate means of locking my invention in the locked position and fully inserted.

FIG. 6 is a view similar to FIG. 5 showing my invention in an unlocked position.

FIG. 7 is another enlarged section similar to FIG. 3 showing another means of locking my invention in the locked position.

FIG. 8 is a section taken on line 8 8 of FIG. 7.

FIG. 9 is a perspective view of the locking means shown in FIG. 7 in the unlocked position.

FIG. l0 is an elevational view partly in section showing a modification of my invention equipped with a conduit for passage of gases.

With reference to the drawings, the tracheostomy device 10 has an inner cannula member 12 with a bore 14 which -is insertable into the bore 16 of outer cannula member 18. Both the inner and outer cannula members are curved in accordance with the inside contour of a persons trachea.

The inner end 20 of the inner cannula member 12 terminates in an orice 22 having approximately the same diameter as the bore 14 of the inner cannula member 12. The outer end 24 of the inner cannula member 12 is provided with a flange 26 which is slightly convex.

The inner end 28 of the outer cannula member 18 is formed into the shape of a cone with exible leaves 30 and interspaces 32. The outer end 34 of the outer cannula member 18 is provided with a ange 36 which is slightly convex to correspond to the flange 26 of the inner cannula member and is slightly larger than the flange 26. l

The inner cannula member 12 is suiciently long so that when it is inserted as far as it can go into the outer cannula member 18 so that flange 26 touches flange 36, the inner end 20 of the inner cannula member 12l bears against leaves 30 and spreads them apart in a distended or expanded position. Upon removal of the inner cannula member 12, the leaves 30 return to their `original position forming a cone as shown in FIG. 4 of the drawings.

When it is desired to lock the inner cannula member 12 in place after being fully inserted into the outer can-I nula member 18, my invention provides several alternate types of lock mechanisms suitable for this purpose.

One suitable lock mechanism comprises a modification of ange 26 which is provided with hooks 38 projecting downward from the lower surface of the flange 26. The flange 36 is formed with corresponding hooks 40 proh jecting upwards to engage with hooks 38 when the inner cannula member 12 is inserted fully into the outer cav-nice nula member 18, thereby locking the inner cannula member 12 in place.

Another locking means comprises a wing nut securing the inner cannula member 12 in place. In this modification, the outer circumference of the outer end 34 of the outer cannula member 18 is provided with threads 42. These threads 42 mesh with corresponding threads 44 contained inside a wing nut 46. The wing nut 46 has an inner annular lip 48 at its top which presses against the outer end of the inner cannula member 12 and keeps it in position when the wing nut 46 is screwed ldown the outer end of the outer cannula member 18.

A further alternate locking means of the tracheostomy device is a breech lock mechanism consisting of a platform 50 and a breech member 52. The outer end of the outer cannula member 18 is formed into the platform t) which has an orifice 54 registerable with the bore 16 of the outer cannula member 18. The two longer parallel sides 56 of the top surface of the platform 5t) are formed into longitudinal lips 58 with overhangs 60 to define a channel 62.

The breech member 52 has two projecting arms 64 which are slidable along the channel 62. The projecting arms 64 are provided with shoulders 66 which correspond to grooves 68 cut into the outer circumference of the outer end of the inner cannula member 12. A tab handle '70 formed at the base of the breech member 52 provides a means for easily moving the breech member in and out of locking position. When the breech member is inserted into channel 62 and pushed into locking position, shoulders 66 are pushed against grooves 68, thereby producing a friction-fit which maintains the inner cannula member 12 in place inside the outer cannula member 13.

My invention also provides a means for easily administering various gases or vaporized medications to a patient through his trachea, while at the same time permitting the patient to breathe air normally through the bore of the inner cannula member 12. Preferred means for doing this are provided for by modifying either the inner cannula member 12 or the outer cannula member 1S with a conduit 72 formed in the walls of either member and running lengthwise from one end to the other.

As shown in FIG. 10, the conduit 72 is illustrated in the Wall of the inner cannula member 12. The conduit 72 terminates at the outer end of the inner cannula member 12 with a bead 74, preferably without a neck, which provides a connection to a conventional rubber tube 76 leading to a conventional source of various gases contained in a cylinder under pressure. The other end of the conduit 72 terminates in a hole 7S.

All of the various parts making up the tracheostomy device, including the various locking mechanisms, may be made out of any suitable material, preferably plastics of suitable types such as polyethylene, polypropylene, nylon, or polystyrene. Such materials as fiberglass or hard rubber are also suitable. Flexible metallic alloys made of metals such as aluminum, tantalum, or other suitable metals, may also be used.

In the operation of my tracheostomy device, the outer cannula member 18 with or without the inner cannula member 12 inserted, is inserted into an opening in a patients trachea. In the case where the inner cannula member 12 is not in place, the outer cannula member 18 is inserted to its full length through the patients trachea. Since the outer cannula member 13 is made of a relatively soft material as compared to a rigid metal, namely, a suitable plastic, this insertion considerably reduces trauma to the patient. The cone shaped inner end of the outer cannula member 18 slips into place very easily, due to the fact that the material used to construct the outer cannular member 1S is of a relatively soft and flexible nature. Thus, very little if any trauma is caused to the body tissues of the patient in the use of my invention.v

After the outer cannula member 18 is in place, the inner cannula member 12 is then inserted into the outer cannula member 18 throughout its full length until the inner end of the inner cannular member 12 bears against the inner end of the outer cannula member 18. This causes the leaves 3f) to expand to approximately the full diameter of the outer cannula member 18 at its inner end. In this manner, a maximum air passageway is provided for breathing by the patient. Of course, the outer cannula member 1S may be inserted together with the inner cannula member 12 only partly inserted in the outer cannula member 1S. After the outer cannula member 18 is in place, then the inner cannula member 12 may be inserted fully to expand the leaves 30 as mentioned before.

After the leaves 3@ have been expanded as mentioned, the inner cannular member 12 is then locked into place if desired by use of the various locking means previously described. At all times, the inner cannula member 12 is removable without disturbing the position of the outer cannula member 18. When the inner cannula member 12 is removed, the leaves 3f) of the inner end of the outer cannula member 18 return to their original positions, without causing any obstruction of the bore 16 of the outer cannula member 1S. Thus, the outer cannula member 1S may be removed also without the need for a stylet which is used by conventional tracheostomy tubes at the present time. In this way, at all times, the patient is able to breathe through his trachea using my tracheostomy device with minimal discomfort compared to presently existing tracheostomy tubes.

Further, the conduit 79 may be connected by the beads 72 to a source of gas such as oxygen or whatever gas is to be administered very easily. This may be done without any discomfort to the patient7 who continues to' breathe through the bore 14 of the inner cannula member 12 while at the same time receiving gas through the conduit 79. This feature is entirely absent in conventional tracheostomy tubes.

Although I have described my invention in detail with reference to the accompanying drawings illustrating preferred forms of my invention, it is understood that numerous changes in the details of construction and arrangement of parts may be made without departing from the spirit and scope of the invention as hereinafter claimed I claim:

l. A tracheostomy tube for insertion into an opening of a patients trachea comprising, an outer cannula member having a curvature permitting said cannula member to conform to the downward inner contour of the trachea after insertion, said cannula member terminating in flexible leaf members forming a cone-shaped inner end with interspaces between the leaf members to permit breathing of the patient through the tracheostomy tube while it is being inserted, and an inner cannula member slidably inserted into the outer cannula member and having its inner end when fully inserted bearing against said leaf members to expand them to a maximum diameter equal to the diameter of the inner end of the outer cannula member.

2. A tracheostomy tube for insertion into an opening of a persons trachea comprising, an outer cannula member having a curvature permitting said cannula member to conform to the downward inner contour of the trachea after insertion and having a cone-shaped inner end terminating in liexible leaves with interspaces for breathing and having threadings around its outer circumference at its outer end, an inner cannula member slidably inserted into the outer cannula member and having a longitudinal conduit in the circumference of its inner wall for passage of gas, and a wing nut member having an inner annular lip at its top and threading in its inner circumference which meshes with the threading of the outer cannula member to maintain the inner cannula member in position when fully inserted.

3. A tracheostomy tube for insertion into an opening of a persons trachea comprising, an outer cannula member having a curvature permitting said cannula member to conform with the inner contour of the trachea after insertion and having a coneshaped inner end terminating in flexible leaves and with interspaces for breathing and formed at its outer end into a platform with parallel lips defining a channel, an inner cannula member slidably inserted into the outer cannula member and having a conduit for passage of gas formed longitudinally in its inner Wall, and with grooves cut into the outer circumference of its outer end, a breech member slidable Within Said channel and having two projecting arms With shoulders producing a friction t with said grooves when the breech member is pushed into locking position to maintain the inner cannula member in place when fully inserted.

References Cited bythe Examiner UNITED STATES PATENTS OTHER REFERENCES Lancet: Adaptation of the Chevalier Jackson Trache- Ostomy Tube, Dec. 23, 1961, p. 1388, 12S- 351.

RICHARD A. GAUDET, Primary Examiner.

Claims (1)

1. A TRACHEOSTOMY TUBE FOR INSERTION INTO AN OPENING OF A PATIENT''S TRACEA COMPRISING, AN OUTER CANNULA MEMBER HAVING A CURVATURE PERMITTING SAID CANNULA MEMBER TO CONFORM TO THE DOWNWARD INNER CONTOUR OF THE TRACHEA AFTER INSERTION, SAID CANNULA MEMBER TERMINATING IN FLEXIBLE LEAF MEMBERS FORMING A CONE-SHAPED INNER END WITH INTERSPACES BETWEEN THE LEAF MEMBERS TO PERMIT BREATHING OF THE PATIENT THROUGH THE TRACHEOSTOMY TUBE WHILE IT IS BEING INSERTED, AND AN INNER CANNULA MEMBER SLIDABLY INSERTED INTO THE OUTER CANNULA MEMBER AND HAVING ITS INNER END WHEN FULLY INSERTED BEARING AGAINST SAID LEAF MEMBERS TO EXPAND THEM TO A MAXIMUM DIAMETER EQUAL TO THE DIAMETER OF THE INNER END OF THE OUTER CANNULA MEMBER.
US283436A 1963-05-27 1963-05-27 Tracheostomy tube Expired - Lifetime US3169529A (en)

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Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3421509A (en) * 1965-12-17 1969-01-14 John M Fiore Urethral catheter
US3688774A (en) * 1969-10-06 1972-09-05 Taichiro Akiyama Tracheotomy cannula and supporter thereof
US3693624A (en) * 1969-10-02 1972-09-26 Donald P Shiley Tracheotomy tube
US3707301A (en) * 1970-06-03 1972-12-26 James M Rauls Adjustable adapter
US3968800A (en) * 1974-09-17 1976-07-13 Vilasi Joseph A Device for insertion into a body opening
US4009720A (en) * 1975-08-14 1977-03-01 Shiley Laboratories, Inc. Wedge seal for a tracheotomy tube
US4033353A (en) * 1975-10-16 1977-07-05 International Paper Company Tracheostomy tube
DE2809645A1 (en) * 1977-05-17 1978-11-30 California Inst Of Techn Geraet for surgical procedures on the head
US4211234A (en) * 1978-08-24 1980-07-08 Joseph Fisher Endotracheal tube introducer
US4266545A (en) * 1979-04-06 1981-05-12 Moss James P Portable suction device for collecting fluids from a closed wound
US4304228A (en) * 1980-07-14 1981-12-08 Bivona Surgical Instruments, Inc. Outside locking tracheal tube
EP0107779A1 (en) * 1980-04-07 1984-05-09 Shiley Incorporated Tracheostomy tube with disposable inner cannula
WO1984002657A1 (en) * 1983-01-14 1984-07-19 Gyoergy Lichtenberger Improved trachea cannula
US4585437A (en) * 1983-03-17 1986-04-29 Simms Mark D Introducer for an umbilical artery catheter
US4633864A (en) * 1984-10-22 1987-01-06 Dacomed Corporation Speaking endotracheal tube
US4645490A (en) * 1984-12-18 1987-02-24 The Kendall Company Nephrostomy catheter with formed tip
US4782829A (en) * 1987-01-12 1988-11-08 Sol Weiss Apparatus for preventing breakage of bags of tracheal tubes
US4817598A (en) * 1987-06-08 1989-04-04 Portex, Inc. Tracheostomy tube with ring pull removable inner cannula
US4911716A (en) * 1982-04-30 1990-03-27 Hansa Medical Products, Inc. Surgical implant for a voice prosthesis
US5056515A (en) * 1991-01-04 1991-10-15 Abel Elaine R Tracheostomy tube assembly
WO1992000774A1 (en) * 1990-07-09 1992-01-23 Brigham & Women's Hospital High-pressure jet ventilation catheter
US5119811A (en) * 1990-02-21 1992-06-09 Smiths Industries Public Limited Company Tracheal assembly having inner and outer tubes and surface materials
US5146913A (en) * 1991-03-04 1992-09-15 Asphendiar Khorsandian Holder and lock for oro-intubation
WO1994001156A1 (en) * 1992-07-01 1994-01-20 Mallinckrodt Medical, Inc. Inner cannula for tracheostomy tube
US5323771A (en) * 1992-03-30 1994-06-28 Joseph Arnold Fisher Endotracheal tube introducer
US5386826A (en) * 1990-02-21 1995-02-07 Smiths Industries Public Limited Company Tracheal tube assemblies
US5390669A (en) * 1993-08-09 1995-02-21 Mallinckrodt Medical, Inc. Device using connector tube to lock inner cannula inside outer cannula
US5460176A (en) * 1994-01-31 1995-10-24 Mallinckrodt Medical, Inc. Positive locking cannula
AU670110B2 (en) * 1992-07-10 1996-07-04 Kapitex Healthcare Limited Filter device for a tracheostoma
WO1999053989A1 (en) * 1998-04-22 1999-10-28 Sims Portex Inc. Tracheostomy tube
US6135111A (en) * 1998-08-31 2000-10-24 Vital Signs Inc. Tracheostomy tube with removable inner cannula
US6248099B1 (en) * 1998-05-14 2001-06-19 Medcare Medical Group, Inc. Disposable tracheostomy inner cannula connector
US6378521B1 (en) * 1996-11-28 2002-04-30 Ideamed N.V. Artificial airway device
US20060102186A1 (en) * 2004-11-18 2006-05-18 Mark Adler Intra-bronchial apparatus for aspiration and insufflation of lung regions distal to placement or cross communication and deployment and placement system therefor
US20070068531A1 (en) * 2005-09-28 2007-03-29 Nellcor Puritan Bennett Incorporated Medical device tube having a flange with opposing support ears for improved alignment and retention of an inner cannula in an outer cannula
WO2007038563A1 (en) * 2005-09-28 2007-04-05 Nellcor Puritan Bennett Llc Tracheostomy tube combination radial snap and bayonet cannula connector
US20070181132A1 (en) * 2006-02-06 2007-08-09 Worley Brian D Ventilator to tracheotomy tube coupling
US20080072911A1 (en) * 2006-09-26 2008-03-27 Nellcor Puritan Bennett Incorporated Tracheostomy tube and technique for using the same
WO2008046418A1 (en) * 2006-10-16 2008-04-24 Unomedical A/S A tracheostomy tube assembly
US20080149108A1 (en) * 2006-12-21 2008-06-26 Simon Neame Medical tube assemblies
US20100108074A1 (en) * 2008-11-05 2010-05-06 Smith Group Plc Medical tube assemblies
US20100125283A1 (en) * 2008-11-18 2010-05-20 Charles Butcher Universal needle guide
US20110083672A1 (en) * 2009-08-12 2011-04-14 Vanderbilt University Tracheostomy tube having a cuffed inner cannula
US8511309B2 (en) 2006-02-06 2013-08-20 Brian D. Worley Ventilator to tracheotomy tube coupling
US9010326B2 (en) 2012-08-02 2015-04-21 Covidien Lp Compressible connector for an inner cannula
US9265906B2 (en) 2013-02-25 2016-02-23 Covidien Lp Compressible cannula connector with release grip
WO2016073621A1 (en) * 2014-11-04 2016-05-12 Summit Access, LLC Biopsy systems and methods
US9833588B2 (en) * 2015-05-04 2017-12-05 Smart Bridge Medical, Inc. Tracheal tube apparatus and methods
US9907921B2 (en) 2013-11-14 2018-03-06 Covidien Lp Tracheostomy tube with inner cannula

Citations (3)

* Cited by examiner, † Cited by third party
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US1624716A (en) * 1927-02-17 1927-04-12 Cerbo Ferdinando Urethroscope
US2786469A (en) * 1953-12-18 1957-03-26 Cohen William Tracheal tube assembly and tracheal plug
US3057350A (en) * 1958-06-27 1962-10-09 Baxter Don Inc Administration set

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1624716A (en) * 1927-02-17 1927-04-12 Cerbo Ferdinando Urethroscope
US2786469A (en) * 1953-12-18 1957-03-26 Cohen William Tracheal tube assembly and tracheal plug
US3057350A (en) * 1958-06-27 1962-10-09 Baxter Don Inc Administration set

Cited By (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3421509A (en) * 1965-12-17 1969-01-14 John M Fiore Urethral catheter
US3693624A (en) * 1969-10-02 1972-09-26 Donald P Shiley Tracheotomy tube
US3688774A (en) * 1969-10-06 1972-09-05 Taichiro Akiyama Tracheotomy cannula and supporter thereof
US3707301A (en) * 1970-06-03 1972-12-26 James M Rauls Adjustable adapter
US3968800A (en) * 1974-09-17 1976-07-13 Vilasi Joseph A Device for insertion into a body opening
US4009720A (en) * 1975-08-14 1977-03-01 Shiley Laboratories, Inc. Wedge seal for a tracheotomy tube
US4033353A (en) * 1975-10-16 1977-07-05 International Paper Company Tracheostomy tube
US4386602A (en) * 1977-05-17 1983-06-07 Sheldon Charles H Intracranial surgical operative apparatus
DE2809645A1 (en) * 1977-05-17 1978-11-30 California Inst Of Techn Geraet for surgical procedures on the head
US4211234A (en) * 1978-08-24 1980-07-08 Joseph Fisher Endotracheal tube introducer
US4266545A (en) * 1979-04-06 1981-05-12 Moss James P Portable suction device for collecting fluids from a closed wound
EP0107779A1 (en) * 1980-04-07 1984-05-09 Shiley Incorporated Tracheostomy tube with disposable inner cannula
US4304228A (en) * 1980-07-14 1981-12-08 Bivona Surgical Instruments, Inc. Outside locking tracheal tube
US4911716A (en) * 1982-04-30 1990-03-27 Hansa Medical Products, Inc. Surgical implant for a voice prosthesis
WO1984002657A1 (en) * 1983-01-14 1984-07-19 Gyoergy Lichtenberger Improved trachea cannula
US4585437A (en) * 1983-03-17 1986-04-29 Simms Mark D Introducer for an umbilical artery catheter
US4633864A (en) * 1984-10-22 1987-01-06 Dacomed Corporation Speaking endotracheal tube
US4645490A (en) * 1984-12-18 1987-02-24 The Kendall Company Nephrostomy catheter with formed tip
US4782829A (en) * 1987-01-12 1988-11-08 Sol Weiss Apparatus for preventing breakage of bags of tracheal tubes
US4817598A (en) * 1987-06-08 1989-04-04 Portex, Inc. Tracheostomy tube with ring pull removable inner cannula
US5386826A (en) * 1990-02-21 1995-02-07 Smiths Industries Public Limited Company Tracheal tube assemblies
US5119811A (en) * 1990-02-21 1992-06-09 Smiths Industries Public Limited Company Tracheal assembly having inner and outer tubes and surface materials
WO1992000774A1 (en) * 1990-07-09 1992-01-23 Brigham & Women's Hospital High-pressure jet ventilation catheter
US5193533A (en) * 1990-07-09 1993-03-16 Brigham And Women's Hospital High-pressure jet ventilation catheter
US5056515A (en) * 1991-01-04 1991-10-15 Abel Elaine R Tracheostomy tube assembly
US5146913A (en) * 1991-03-04 1992-09-15 Asphendiar Khorsandian Holder and lock for oro-intubation
US5323771A (en) * 1992-03-30 1994-06-28 Joseph Arnold Fisher Endotracheal tube introducer
WO1994001156A1 (en) * 1992-07-01 1994-01-20 Mallinckrodt Medical, Inc. Inner cannula for tracheostomy tube
AU670110B2 (en) * 1992-07-10 1996-07-04 Kapitex Healthcare Limited Filter device for a tracheostoma
US5390669A (en) * 1993-08-09 1995-02-21 Mallinckrodt Medical, Inc. Device using connector tube to lock inner cannula inside outer cannula
EP0713405A1 (en) * 1993-08-09 1996-05-29 Mallinckrodt Medical, Inc. Connector for locking an inner cannula inside an outer cannula
EP0713405A4 (en) * 1993-08-09 1997-03-26 Mallinckrodt Medical Inc Connector for locking an inner cannula inside an outer cannula
US5460176A (en) * 1994-01-31 1995-10-24 Mallinckrodt Medical, Inc. Positive locking cannula
US6378521B1 (en) * 1996-11-28 2002-04-30 Ideamed N.V. Artificial airway device
US6135110A (en) * 1998-04-22 2000-10-24 Sims Portex Inc. Tracheostomy tube
WO1999053989A1 (en) * 1998-04-22 1999-10-28 Sims Portex Inc. Tracheostomy tube
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