EP0648137A1 - Canule interne pour tube de tracheotomie - Google Patents

Canule interne pour tube de tracheotomie

Info

Publication number
EP0648137A1
EP0648137A1 EP93916739A EP93916739A EP0648137A1 EP 0648137 A1 EP0648137 A1 EP 0648137A1 EP 93916739 A EP93916739 A EP 93916739A EP 93916739 A EP93916739 A EP 93916739A EP 0648137 A1 EP0648137 A1 EP 0648137A1
Authority
EP
European Patent Office
Prior art keywords
inner cannula
tracheostomy tube
tube
present
tracheostomy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP93916739A
Other languages
German (de)
English (en)
Other versions
EP0648137A4 (fr
Inventor
Michael R. Mahoney
Duane L. Horton
Cheryl A. Benway
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mallinckrodt Inc
Original Assignee
Mallinckrodt Medical Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mallinckrodt Medical Inc filed Critical Mallinckrodt Medical Inc
Publication of EP0648137A1 publication Critical patent/EP0648137A1/fr
Publication of EP0648137A4 publication Critical patent/EP0648137A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0465—Tracheostomy tubes; Devices for performing a tracheostomy; Accessories therefor, e.g. masks, filters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0402—Special features for tracheal tubes not otherwise provided for
    • A61M16/0427—Special features for tracheal tubes not otherwise provided for with removable and re-insertable liner tubes, e.g. for cleaning

Definitions

  • Tracheostomy tubes are normally inserted into the trachea of a patient through an opening cut in the front of the throat.
  • the tracheostomy tube is generally designed to include a relatively straight proximal and distal end portion connected by a curved central portion.
  • the tracheostomy tube may be formed entirely in an arced configuration.
  • the distal end portion of the tracheostomy tube extends down into the trachea, while the proximal end portion extends through the cut in the throat.
  • An inflatable cuff may be included around the distal end portion and may be used to seal the space between the tube and the surrounding wall of the trachea, so that all ventilation occurs through the tracheostomy tube.
  • a second, removable, tube or cannula which can be inserted into the tracheostomy tube.
  • This inner cannula may easily be removed from the tracheostomy tube and cleaned or replaced by a new inner cannula, without disturbing the tracheostomy tube.
  • the inner cannula must be flexible enough to be inserted into the proximal end of the tracheostomy tube and then pushed around the curved central portion into the distal end.
  • the inner cannula must also be rigid enough to avoid collapse or kinking in the curved portion, which would restrict or close off the ventilation pathway.
  • inner cannula is described in US Patent 3,443,564 to Oehmig, and includes a spirally wound wire along a portion of its length which will correspond to the curved portion of a tracheostomy tube when inserted.
  • This inner cannula has several disadvantages including the lack of a solid wall where the wound wire exists. This is disadvantageous because gaps will be present between convolutions of the wire, which will gather mucous and other secretions.
  • such an inner cannula is relatively expensive, so as not to be suitable as a disposable unit. Therefore, this inner cannula must be cleaned every time it is removed, which is a difficult task because of the wire and grooves formed there between.
  • FIG. 1 Another known inner cannula is shown in US Patent 3,948,274 to Zeldman et al, such inner cannula comprising a normally straight one-piece flexible tube of plastic having circumfirentially formed corrugations along a portion of its length.
  • the corrugations enable the inner cannula to have enough flexibility to be pushed through the curved portion of a tracheostomy tube while maintaining structural integrity and preventing collapse of the inner cannula when inserted.
  • this inner cannula also has disadvantages associated with the corrugations.
  • the corrugations will allow relatively rapid buildup of mucous and other secretions. This buildup creates a need for relatively frequent removal of the inner cannula for cleaning or replacement. While this inner cannula is low in cost, cleaning may still be preferred to replacement, by some patients. Cleaning is made difficult because the mucous and other secretions may become embedded in the corrugations. This in turn may lead to excessive build up and possible infection.
  • an inner cannula made from a material which allows for a minimum outside diameter (OD) to inside diameter (ID) ratio, while maintaining structural integrity.
  • the objects of the present invention are accomplished by providing an inner cannula formed from a expanded polytetrafluoroethylene (EPTFE) material or other compound of similar polymer matrix.
  • EPTFE expanded polytetrafluoroethylene
  • Fig. 1 is a plan view of an inner cannula for a tracheostomy tube according to the present invention.
  • Fig. 1 shows an inner cannula, generally designated by reference numeral 10, according to the present invention.
  • the inner cannula 10 comprises a flexible tube 20, having a distal end 30, and a proximal end 40.
  • the flexible tube 20, has a single lumen extending the entire length thereof.
  • An end piece 50 is attached to the proximal end 40.
  • the end piece 50 is formed so as to fit securely into the distal end of a tracheostomy tube when inserted.
  • the flexible tube 20 is formed of a material which has sufficient flexibility to allow for insertion into the lumen of a tracheostomy tube while maintaining structural integrity and avoiding kinking and collapse.
  • the flexible tube 20, is formed of a material as described above which also allows the flexible tube 20, to have a smooth lumen.
  • the flexible tube 20, is formed of a EPTFE material or another compound of similar polymer matrix.
  • the end piece 50 may be attached to the proximal end
  • An inner cannula according to the present invention provides several advantages over those known in the prior art.
  • the use of a material as described above for the flexible tube of the inner cannula provides a low ratio of OD to ID.
  • the walls of the inner cannula can be very thin, e.g. about 0.4mm thick.
  • the wall thickness of an inner cannula for a 9mm tracheostomy tube is from about 0.3mm to 0 . 5mm.
  • the inner cannula according to the present invention may have any suitable OD, so as to fit snugly and securely within any standard tracheostomy tube.
  • the inner cannula can be of any suitable length to correspond with the length of the tracheostomy tube in which it is to be inserted.
  • the use of the material described above for the inner cannula according to the present invention provides several other advantages.
  • less drag is exerted on the tracheostomy tube during insertion of the inner lumen.
  • the inner cannula according to the present invention can be formed with a smooth lumen, other advantages are realized over prior art devices. In particular, it is believed that less build-up of mucous and other secretions may occur. Therefore, it may not be necessary to remove and clean or replace the inner cannula as frequently as needed by prior art devices.
  • the relatively low cost of the inner cannula according to the present invention makes replacement highly feasible and affordable.
  • cleaning of the inner cannula according to the present invention is also possible.
  • the smooth lumen and low friction coefficient make cleaning easier and more efficient. There are no corrugations or wires for mucous and secretions to become embedded in. Therefore, cleaning is more thorough and creates less risk of subsequent contamination and infection.

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Emergency Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Materials For Medical Uses (AREA)
  • Prostheses (AREA)

Abstract

La présente invention se rapporte à une nouvelle canule (10) interne supérieure destinée à être insérée dans un tube de trachéotomie. Selon l'invention, la canule interne est formée dans un matériau qui permet à la canule interne d'avoir un lumen lisse tout en évitant le tortillement ou le tassement lorsqu'on l'insère dans le tube de trachéotomie.
EP93916739A 1992-07-01 1993-06-24 Canule interne pour tube de tracheotomie. Withdrawn EP0648137A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US90738592A 1992-07-01 1992-07-01
US907385 1992-07-01
PCT/US1993/006046 WO1994001156A1 (fr) 1992-07-01 1993-06-24 Canule interne pour tube de tracheotomie

Publications (2)

Publication Number Publication Date
EP0648137A1 true EP0648137A1 (fr) 1995-04-19
EP0648137A4 EP0648137A4 (fr) 1995-08-09

Family

ID=25424008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93916739A Withdrawn EP0648137A4 (fr) 1992-07-01 1993-06-24 Canule interne pour tube de tracheotomie.

Country Status (5)

Country Link
EP (1) EP0648137A4 (fr)
JP (1) JPH07508901A (fr)
AU (1) AU4649793A (fr)
CA (1) CA2138142A1 (fr)
WO (1) WO1994001156A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7681576B2 (en) * 2003-05-06 2010-03-23 Mallinckrodt Inc. Multiple cannula systems and methods
JP4607550B2 (ja) * 2004-11-09 2011-01-05 株式会社高研 フッ素樹脂製気管切開カニューレ用曲管の製造方法
US8104475B2 (en) 2008-11-05 2012-01-31 Smiths Group Plc Medical tube assemblies
GB201303553D0 (en) 2013-02-28 2013-04-10 Smiths Medical Int Ltd Tracheostomy tube assemblies and inner cannulae
GB201303554D0 (en) 2013-02-28 2013-04-10 Smiths Medical Int Ltd Tracheostomy tube assemblies and inner cannulae
GB201405219D0 (en) * 2014-03-22 2014-05-07 Smiths Medical Int Ltd Tracheostomy tube assemblies and inner cannulae
GB201407573D0 (en) 2014-04-30 2014-06-11 Smiths Medical Int Ltd Tubes and their manuacture
GB201506545D0 (en) 2015-04-16 2015-06-03 Smiths Medical Int Ltd Tracheostomy tube assemblies and inner cannulae
GB201510231D0 (en) 2015-06-11 2015-07-29 Smiths Medical Int Ltd Tracheostomy tube assemblies and inner cannulae
GB201510230D0 (en) 2015-06-11 2015-07-29 Smiths Medical Int Ltd Tracheostomy tube assemblie and inner cannulae
GB201512674D0 (en) 2015-07-15 2015-08-26 Smiths Medical Int Ltd Tracheostomy tube assemblies and inner cannulae
GB201515450D0 (en) 2015-08-29 2015-10-14 Smiths Medical Int Ltd Tracheostomy tube assemblies and inner cannulae
GB201516300D0 (en) 2015-09-15 2015-10-28 Smiths Medical Int Ltd Tubes and their manufacture
GB201518888D0 (en) 2015-10-24 2015-12-09 Smiths Medical Int Ltd Medico-surgical tubes and their manufacture
GB201716488D0 (en) 2017-10-07 2017-11-22 Smiths Medical International Ltd Tubes and their manufacture

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854484A (en) * 1971-10-22 1974-12-17 R Jackson Endotracheal tube with liquid fillable cuff
WO1992007603A1 (fr) * 1990-10-19 1992-05-14 Ballard Medical Products Catheter transtracheal multicouche

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786469A (en) * 1953-12-18 1957-03-26 Cohen William Tracheal tube assembly and tracheal plug
US3169529A (en) * 1963-05-27 1965-02-16 Norman Z Koenig Tracheostomy tube

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854484A (en) * 1971-10-22 1974-12-17 R Jackson Endotracheal tube with liquid fillable cuff
WO1992007603A1 (fr) * 1990-10-19 1992-05-14 Ballard Medical Products Catheter transtracheal multicouche

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9401156A1 *

Also Published As

Publication number Publication date
AU4649793A (en) 1994-01-31
EP0648137A4 (fr) 1995-08-09
WO1994001156A1 (fr) 1994-01-20
CA2138142A1 (fr) 1994-01-20
JPH07508901A (ja) 1995-10-05

Similar Documents

Publication Publication Date Title
EP0648137A1 (fr) Canule interne pour tube de tracheotomie
US5386826A (en) Tracheal tube assemblies
JP6298467B2 (ja) 削ぎ部を利用した自己位置合わせ式気管チューブ汚れ取り装置
EP0037719B1 (fr) Tube trachéal avec un tube intérieur amovible
US3991762A (en) Aspirating device for patient ventilation apparatus
US5490503A (en) Suction catheter having multiple valves and collet assembly
US5222487A (en) Hinged tracheostomy tube obturator
EP0474802B1 (fr) Ensemble de tube tracheal
US6705321B2 (en) Laryngeal mask adapter
US20090101152A1 (en) High surface area anti-microbial coated endotracheal tube
JPH09108231A (ja) 気管瘻孔形成チューブ組立体
US20060110702A1 (en) Aspirator having a cushioned and aspiration controlling tip
US3948274A (en) Tracheal tube with disposable cannula
WO2008109787A1 (fr) Tube pour trachéotomie
US8631796B2 (en) Laryngeal mask
US20180326169A1 (en) Endotracheal cleaning suction brush
CA2224167C (fr) Amelioration apportee a une canule de tracheotomie
US20060024641A1 (en) Aspirator having cushioned tip
WO1993000124A1 (fr) Obturateur de tube de tracheostomie articule
US20190247602A1 (en) Curve stabilizer for an endotracheal tube
CA2111861C (fr) Obturateur articule d'une canule de tracheotomie
AU2268692A (en) Hinged tracheostomy tube obturator
GB2306112A (en) A tracheostomy tube
MXPA00001328A (en) Endotracheal or tracheotomy tube
CA2643123A1 (fr) Tubages medicaux

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19950113

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE

A4 Supplementary search report drawn up and despatched
AK Designated contracting states

Kind code of ref document: A4

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE

17Q First examination report despatched

Effective date: 19980918

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19990129