WO2003022342A1 - Gaine anti-condensation pour tube raccord - Google Patents
Gaine anti-condensation pour tube raccord Download PDFInfo
- Publication number
- WO2003022342A1 WO2003022342A1 PCT/GB2002/004178 GB0204178W WO03022342A1 WO 2003022342 A1 WO2003022342 A1 WO 2003022342A1 GB 0204178 W GB0204178 W GB 0204178W WO 03022342 A1 WO03022342 A1 WO 03022342A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheath
- tube
- metal
- transparent
- film
- Prior art date
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
- A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
- A61M16/0875—Connecting tubes
Definitions
- This invention relates to an anti-condensation sheath for a breathing tube of the kind used in patient ventilation to connect the patient to a source of a gaseous mixture.
- the inspiratory passageway or breathing tube of a breathing system is normally connected to a humidifier and the tube may be heated by an internal flexible heating element to maintain its internal temperature at about 37 degrees centigrade.
- the breathing tube normally has a corrugated or concertina wall. This increases flexibility and prevents crushing or pinching, but it also increases the surface area of the wall over which heat exchange can occur. This increases condensation within the tube, which is a serious problem in that the tube may be blocked with water which at best will interfere with the patient's breathing or at worst could drown him.
- the breathing tube should therefore be of a transparent material so that the accumulation of condensate can be observed and appropriate action taken to remove it.
- the remainder of the surface of the sheath is preferably heat reflective. This will provide an efficient insulator which is more lightweight and flexible than a sheath of a more conventional insulating material.
- a principal object of the present invention is to provide an efficient, lightweight sheath for a breathing tube the greater part of the surface area of which is heat reflective but which comprises one or more "windows" for the observation of the breathing tube and to provide such a sheath by a manufacturing technique enabling sheaths to be mass produced very economically.
- the technique permits the position and shape of the window or windows to be selectively varied to suit customer requirements without major alteration of the production equipment and consequent down time.
- a clear and accurate demarcation between transparent and opaque surface areas can be achieved using a simple metal deposition technique well proven in the field of food packaging, which is more cost effective than alternatives such as spraying, printing or painting.
- a sheath for a breathing tube for use in patient ventilation the sheath being of greater internal diameter than the external diameter of the tube, characterised in that the sheath is of a transparent plastics material the greater part of which has been rendered heat reflective by the vapour deposition thereon of a metal, one or more selected areas of the sheath having no metal deposited thereon to permit observation of the tube through the sheath.
- the said metal is preferably aluminium.
- a central region of the sheath may remain transparent through the use of a metal mask during the vapour deposition process.
- one or more selected areas of the sheath may remain transparent through the application of resist lacquer to said areas prior to the vapour deposition process.
- the sheath is preferably manufactured by passing a first film of a transparent plastics material over a heated metal wire in a vacuum chamber and then laminating a second film of a transparent plastics material to the surface of the first film on which metal has been deposited.
- Each of said films is preferably a transparent polymer from 10 to 100 microns in thickness.
- said one or more selected areas is a central region of the sheath which is approximately one third of the length of the sheath.
- a corrugated breathing tube 10 can be connected at one end S to a source of a gas mixture, such as air and oxygen, whereby the gas mixture is supplied to a patient via the other end P of the tube.
- the tube 10 is of a transparent or at least translucent polymeric material so that the accumulation of condensate 14 within the tube can be observed and appropriate action taken.
- a flexible heating element 11 passes to and fro to maintain the gas mixture supplied to the patient at around 37 degrees centigrade.
- the tube 10 is surrounded by a sheath 12 of substantially greater internal diameter than the external diameter of the tube 10. This provides an insulative barrier of still air between the exterior of the tube 10 and ambience, having the effect of reducing the rate at which condensation 14 occurs within the tube 10.
- the sheath 12 is made by wrapping around the tube 10 an appropriate length of a polymeric film laminate which corresponds generally to the length of the tube 10. A central portion of the film, representing approximately one third of its length, has had no metal applied to it. The central portion of the sheath thus formed, indicated by the broken lines at 13, thus remains at least semi-transparent.
- the tube 10 together with the sheath 12 is disconnected at one or the other of its ends either from the supply S or the patient connection P and lowered to drain the water out.
- the sheath 12 has been manufactured by passing a first film of transparent polyamide, polyester, polypropylene or polyethylene between 10 and 100 microns in thickness over a heated aluminium wire in a vacuum chamber. Subsequent to the vapour deposition of aluminium on the first film a second, similar film is laminated to the first film with the deposited metal sandwiched between the films. This will prevent accidental removal of metal from the sheath.
- the "window” 13 has been provided in one of two ways. Either a metal mask has been applied to the first film to prevent vapour deposition to a lengthwise strip of the film, or the first film has been treated with a resist lacquer to prevent vapour deposition on the treated area or areas. Subsequent to vapour deposition the resist lacquer is washed off before the lamination procedure.
- the use of resist lacquer has the advantage that the area or areas of the finished sheath which remain transparent can be varied in size and location and are not limited to lengthwise strips of uniform width.
- the sheath could be provided with a "window” along the whole or part of its length and this need not be straight but might pass spirally around the sheath. Several “windows” might be provided spaced along the length of the sheath.
Landscapes
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (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)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0122097.9A GB0122097D0 (en) | 2001-09-13 | 2001-09-13 | Anti-condensation sheath for breathing tube |
GB0122097.9 | 2001-09-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003022342A1 true WO2003022342A1 (fr) | 2003-03-20 |
Family
ID=9921997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2002/004178 WO2003022342A1 (fr) | 2001-09-13 | 2002-09-13 | Gaine anti-condensation pour tube raccord |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB0122097D0 (fr) |
WO (1) | WO2003022342A1 (fr) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2075027A1 (fr) * | 2007-12-28 | 2009-07-01 | Covidien AG | Dispositif anti-condensation pour cathéters |
WO2012033421A1 (fr) * | 2010-09-10 | 2012-03-15 | Fisher & Paykel Healthcare Limited | Composant d'acheminement de gaz |
US10589050B2 (en) | 2012-11-14 | 2020-03-17 | Fisher & Paykel Healthcare Limited | Zone heating for respiratory circuits |
AU2017272155B2 (en) * | 2011-10-14 | 2020-03-19 | Fisher & Paykel Healthcare Limited | Medical tubes and methods of manufacture |
US10751498B2 (en) | 2014-03-17 | 2020-08-25 | Fisher & Paykel Healthcare Limited | Medical tubes for respiratory systems |
US10814091B2 (en) | 2013-10-24 | 2020-10-27 | Fisher & Paykel Healthcare Limited | System for delivery of respiratory gases |
US10828482B2 (en) | 2013-12-20 | 2020-11-10 | Fisher & Paykel Healthcare Limited | Humidification system connections |
US10960167B2 (en) | 2015-09-09 | 2021-03-30 | Fisher & Paykel Healthcare Limited | Zone heating for respiratory circuits |
US11058844B2 (en) | 2012-12-04 | 2021-07-13 | Fisher & Paykel Healthcare Limited | Medical tubes and methods of manufacture |
WO2021138731A1 (fr) * | 2020-01-08 | 2021-07-15 | Giesbrecht Owen | Circuit respiratoire nettoyable |
WO2021206568A1 (fr) * | 2020-04-09 | 2021-10-14 | Fisher & Paykel Healthcare Limited | Conduit respiratoire |
US11311695B2 (en) | 2016-12-22 | 2022-04-26 | Fisher & Paykel Healthcare Limited | Medical tubes and methods of manufacture |
US11318270B2 (en) | 2011-06-03 | 2022-05-03 | Fisher & Paykel Healthcare Limited | Medical tubes and methods of manufacture |
WO2023195865A1 (fr) * | 2022-04-08 | 2023-10-12 | Fisher & Paykel Healthcare Limited | Conduit de gaz médical |
US12053586B2 (en) | 2016-07-21 | 2024-08-06 | Fisher & Paykel Healthcare Limited | Medical tubes for breathing circuit |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5143060A (en) * | 1989-06-08 | 1992-09-01 | Smith Charles A | Insulated carbon dioxide absorption system |
GB2316669A (en) * | 1996-08-30 | 1998-03-04 | Jiffy Packaging Co Ltd | Heat reflective and impact resistant protective bag |
US5735266A (en) * | 1986-09-23 | 1998-04-07 | Smith; Charles A. | Insulated conditioned respiratory air transport tube |
US6106627A (en) * | 1996-04-04 | 2000-08-22 | Sigma Laboratories Of Arizona, Inc. | Apparatus for producing metal coated polymers |
-
2001
- 2001-09-13 GB GBGB0122097.9A patent/GB0122097D0/en not_active Ceased
-
2002
- 2002-09-13 WO PCT/GB2002/004178 patent/WO2003022342A1/fr not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5735266A (en) * | 1986-09-23 | 1998-04-07 | Smith; Charles A. | Insulated conditioned respiratory air transport tube |
US5143060A (en) * | 1989-06-08 | 1992-09-01 | Smith Charles A | Insulated carbon dioxide absorption system |
US6106627A (en) * | 1996-04-04 | 2000-08-22 | Sigma Laboratories Of Arizona, Inc. | Apparatus for producing metal coated polymers |
GB2316669A (en) * | 1996-08-30 | 1998-03-04 | Jiffy Packaging Co Ltd | Heat reflective and impact resistant protective bag |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2075027A1 (fr) * | 2007-12-28 | 2009-07-01 | Covidien AG | Dispositif anti-condensation pour cathéters |
US8091548B2 (en) | 2007-12-28 | 2012-01-10 | Covidien Ag | Anti-condensation device for catheters |
US10449318B2 (en) | 2010-09-10 | 2019-10-22 | Fisher & Paykel Healthcare Limited | Component for conveying gases |
EP4223344A1 (fr) * | 2010-09-10 | 2023-08-09 | Fisher & Paykel Healthcare Limited | Composant d'acheminement de gaz |
WO2012033421A1 (fr) * | 2010-09-10 | 2012-03-15 | Fisher & Paykel Healthcare Limited | Composant d'acheminement de gaz |
US11358318B2 (en) | 2010-09-10 | 2022-06-14 | Fisher & Paykel Healthcare Limited | Component for conveying gases |
US11318270B2 (en) | 2011-06-03 | 2022-05-03 | Fisher & Paykel Healthcare Limited | Medical tubes and methods of manufacture |
AU2017272155B2 (en) * | 2011-10-14 | 2020-03-19 | Fisher & Paykel Healthcare Limited | Medical tubes and methods of manufacture |
US10828455B2 (en) | 2011-10-14 | 2020-11-10 | Fisher & Paykel Healthcare Limited | Medical tubes and methods of manufacture |
US10589050B2 (en) | 2012-11-14 | 2020-03-17 | Fisher & Paykel Healthcare Limited | Zone heating for respiratory circuits |
US12053587B2 (en) | 2012-11-14 | 2024-08-06 | Fisher & Paykel Healthcare Limited | Zone heating for respiratory circuits |
US11129954B2 (en) | 2012-11-14 | 2021-09-28 | Fisher & Paykel Healthcare Limited | Zone heating for respiratory circuits |
US11058844B2 (en) | 2012-12-04 | 2021-07-13 | Fisher & Paykel Healthcare Limited | Medical tubes and methods of manufacture |
US10814091B2 (en) | 2013-10-24 | 2020-10-27 | Fisher & Paykel Healthcare Limited | System for delivery of respiratory gases |
US10828482B2 (en) | 2013-12-20 | 2020-11-10 | Fisher & Paykel Healthcare Limited | Humidification system connections |
US11826538B2 (en) | 2013-12-20 | 2023-11-28 | Fisher & Paykel Healthcare Limited | Humidification system connections |
US10751498B2 (en) | 2014-03-17 | 2020-08-25 | Fisher & Paykel Healthcare Limited | Medical tubes for respiratory systems |
US10960167B2 (en) | 2015-09-09 | 2021-03-30 | Fisher & Paykel Healthcare Limited | Zone heating for respiratory circuits |
US12053586B2 (en) | 2016-07-21 | 2024-08-06 | Fisher & Paykel Healthcare Limited | Medical tubes for breathing circuit |
US11311695B2 (en) | 2016-12-22 | 2022-04-26 | Fisher & Paykel Healthcare Limited | Medical tubes and methods of manufacture |
US12076489B2 (en) | 2016-12-22 | 2024-09-03 | Fisher & Paykel Healthcare Limited | Medical tubes and methods of manufacture |
WO2021138731A1 (fr) * | 2020-01-08 | 2021-07-15 | Giesbrecht Owen | Circuit respiratoire nettoyable |
WO2021206568A1 (fr) * | 2020-04-09 | 2021-10-14 | Fisher & Paykel Healthcare Limited | Conduit respiratoire |
WO2023195865A1 (fr) * | 2022-04-08 | 2023-10-12 | Fisher & Paykel Healthcare Limited | Conduit de gaz médical |
Also Published As
Publication number | Publication date |
---|---|
GB0122097D0 (en) | 2001-10-31 |
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