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WO2011030087A1 - Casque de respiration avec cadre - Google Patents

Casque de respiration avec cadre Download PDF

Info

Publication number
WO2011030087A1
WO2011030087A1 PCT/GB2010/001640 GB2010001640W WO2011030087A1 WO 2011030087 A1 WO2011030087 A1 WO 2011030087A1 GB 2010001640 W GB2010001640 W GB 2010001640W WO 2011030087 A1 WO2011030087 A1 WO 2011030087A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
hood
breathing apparatus
frame
head
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.)
Ceased
Application number
PCT/GB2010/001640
Other languages
English (en)
Inventor
Peter Ryan Smith
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.)
Smiths Medical International Ltd
Original Assignee
Smiths Medical International Ltd
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 Smiths Medical International Ltd filed Critical Smiths Medical International Ltd
Publication of WO2011030087A1 publication Critical patent/WO2011030087A1/fr
Anticipated expiration legal-status Critical
Ceased 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. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • 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. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0627—Means for improving the adaptation of the mask to the patient with sealing means on a part of the body other than the face, e.g. helmets, hoods or domes
    • 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. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/04—Gas helmets
    • 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. ventilators; Tracheal tubes
    • A61M16/0045—Means for re-breathing exhaled gases, e.g. for hyperventilation treatment
    • 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. ventilators; Tracheal tubes
    • A61M16/22—Carbon dioxide-absorbing devices ; Other means for removing carbon dioxide
    • 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. ventilators; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0015—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors
    • 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
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/0208—Oxygen
    • 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
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/025—Helium
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/04—Hoods

Definitions

  • This invention relates to breathing apparatus
  • the invention is more particularly concerned with apparatus for providing breathing gas to patients having respiratory problems.
  • hood may be used to enclose the entire head.
  • One problem with hoods lies in the difficulty of ensuring that they allow space between the hood and the face for free movement of gas, that the hood does not contact the nose and mouth of the patient and that the hood is light and comfortable to wear.
  • the apparatus includes a frame member adapted to fit on the user's head and to extend away from the head at least in the region of the nose and mouth, and a hood member more flexible than the frame member adapted to fit over the user's head and the frame member such that the frame member spaces the hood member from the nose and mouth to ensure free gas movement in this region.
  • the frame member preferably includes a first U-shape member adapted to extend over the crown of the head and down opposite sides in the region of the ears.
  • the frame member may also include a second U-shape member extending forwardly from the first member around and spaced from the front of the face.
  • the frame member preferably includes a third U-shape member extending forwardly from the first member with the second and third members extending below and above the nose and mouth of the user.
  • the hood member may be formed with gas channel means extending from a gas connection to an inlet opening on the interior of the hood member in the region of the front of the face.
  • the inlet opening may be provided by a chamber with a plurality of gas outlet holes.
  • the gas channel means preferably includes a gas outlet opening spaced below the gas inlet opening.
  • the hood member may have a wall formed of two separate layers and the gas channel means may be formed by joining together the two layers to define the gas channel means.
  • the hood member preferably includes means towards its lower end for making a light seal with the user's shoulders.
  • the apparatus preferably includes a gas supply including a source of helium gas and may be a recirculating gas supply.
  • Figure 1 is a side elevation view of the apparatus in use
  • Figure 2 is a front view of the apparatus in use
  • Figure 3 is a perspective view of the frame of the apparatus without the hood
  • Figure 4 is a perspective view of the hood of the apparatus before assembly on the frame.
  • the apparatus comprises a flexible hood 1 supported internally by a substantially rigid or semi-flexible frame 2 and a gas supply 3 by which a breathing gas mixture is supplied to and from the interior of the hood.
  • the hood 1 is moulded or otherwise formed into a closed hollow main portion 10 of substantially oval section slightly larger than the head of the user on which the hood is to be used and with an enlarged shoulder portion 11 at its lower end.
  • the hood 1 is made from two layers 12 and 13 of a flexible, transparent plastics sheet material such as polythene or polyurethane, which are separate from one another over the major part of their surface but are joined together by welding around the shoulder portion 11 and along two weld lines 14 and 15 ( Figure 4).
  • the weld lines 14 and 15 are closely spaced from one another to form a narrow gas channel 16 extending vertically from the rear of the shoulder portion 11 where the gas channel is joined to a gas inlet connector 17.
  • the channel 16 extends over the crown 18 of the hood 1 and down the front of the hood a short distance where the weld lines 14 and 15 diverge away from one another to form an enlarged gas inlet chamber 19 of a general laterally-extending oval shape.
  • the gas inlet chamber 19 is located in the region of the forehead of the user, that is, centrally slightly above the eyes of the user.
  • the chamber 19 is perforated with gas outlet holes 20 through the inner layer 13 so that gas supplied to the gas inlet connector 17 flows out of the chamber 19 into the interior of the hood in the upper part of the user's face.
  • the channel 16 continues down from the upper inlet chamber 19 to a similar lower outlet chamber 21 located level with the user's mouth.
  • the channel 16 between the two chambers 19 and 21 is blocked along its length by a weld 22 so that gas cannot flow between the two chambers.
  • the channel 16 continues down from the outlet chamber 21 to a gas outlet connector 23 in the region of the shoulder portion 1 1.
  • the weld lines 14 and 15 could be interrupted to allow a small amount of gas to leak from the channel 16 between the two layers 12 and 13 so as to slightly inflate the hood 1 and help keep it away from the face.
  • the frame 2 is moulded of a substantially rigid or semi-flexible, resilient plastics material, such as polypropylene or polycarbonate and is intended to be reusable. Both the frame 2 and the hood 1 are available in different sizes to fit patients of different builds.
  • the frame 2 is an integral, unitary or one-piece structure having a first, U-shape member 30 with two side legs 31 and 32 and a crown piece 33.
  • the member 30 is fits snugly on the head substantially vertically with the crown piece 33 sitting on the top of the head and with the two side legs 31 and 32 extending down in contact with opposite sides of the head just in front of the ears to a location just below the ears.
  • the lateral spacing between the two legs 31 and 32 is selected to be slightly smaller than the width of the head so that when fitted on the head the legs are splayed resiliently outwardly slightly and the member 30 grips the head lightly to hold the frame 2 securely in position.
  • the frame 2 also includes a lower, chin member 34 of U-shape, which extends forwardly and down at an angle of about 30° to the horizontal from the lower end of the two side legs 31 and 32 to a location forwardly of chin by about 30mm.
  • the frame 2 further includes a second, upper member 35 of U shape extending forwardly from the side legs 31 and 32 from a location just above the ears.
  • the upper member 35 has a common side piece 36 and 37 on each side and is bifurcated into two parallel lateral beams 38 and 39 where the member extends across the front of the face to form a support opening 40 of oval shape.
  • the beams 38 and 39 extend across the face in the region of the forehead and are spaced from the face by a distance of about 30mm.
  • the gas supply 3 is preferably a helium and oxygen recirculating supply where a mixture of helium and oxygen is provided from compressed gas cylinders to the hood 1 and gas exhausted from the hood is fed back to the supply where it is filtered, carbon dioxide is removed and fresh gas is added as necessary.
  • the gas supply could, instead, be a
  • the hood of the present invention is particularly suited to recirculating systems with relatively low leakage to reduce waste of expensive gases like helium.
  • the frame 2 is first fitted on user's head.
  • the hood 1 is then pulled down over the head and frame 2 in the correct orientation so that the upper gas inlet chamber 19 locates in the support opening 40 of the frame 2 and the lower gas outlet chamber 21 locates centrally just above the chin member 34 of the frame.
  • the shoulder portion 1 1 at the lower end of the hood 1 incorporates some means for making a light gas seal with the user's shoulders. This could take the form of an elastic band or an adhesive strip, or, where the user is wearing clothing, a Velcro or similar hooked fabric strip that catches with the threads of the clothing.
  • the hood inlet connector 17 is then connected to one end of tubing 48 extending to the outlet of the gas supply 3.
  • the hood outlet connector 23 is similarly connected to one end of tubing 49 extending to the inlet of the gas supply 3.
  • the gas supply 3 preferably includes a pump to create a small vacuum in the outlet chamber 21 to help gas flow from the hood 1.
  • the gas supply 3 may be arranged to detect when the patient inhales and exhales and to supply and extract gas from the hood 1 in a cyclical fashion in synchronism with patient breathing.
  • Gas supplied to the hood 1 enters via the upper chamber 19, which helps disperse the gas over an increased area and also acts as a small gas reservoir to accommodate variation in flow. Because the gas enters the hood 1 towards its upper end it helps push down the stale gas towards the lower chamber 21 where it is extracted from the hood for recycling.
  • the frame 2 helps to keep the material of the hood 1 away from the front of the face, with contact by the hood being confined to the rear of the head where the hair prevents direct skin contact. The design helps minimize the internal effective volume of the hood 1. When the hood 1 becomes soiled it is removed from the frame 2 and disposed of. The frame 2 can be reused to minimize expense.
  • the frame 2 is shaped to distribute pressure over a relatively large area and reduce discomfort while being securely retained.
  • the hood arrangement could include conventional safety valves to vent gas from the hood in the event that pressure rises above an upper threshold level and to allow ambient air to flow into the hood in the event of pressure within the hood falling below a lower threshold level.
  • the rebreathing arrangement enables the heat and moisture in the exhaled breath to be conserved. It also reduces wastage of gas, which is especially important in the case of helium, which is relatively expensive.
  • the gas supply arrangement within the hood enables efficient removal of stale gases to ensure an ideal patient environment.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Emergency Medicine (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

L'invention porte sur un appareil de respiration, qui comprend un cadre (2) et un casque souple (1) s'étendant sur la tête et le cadre, le cadre permettant de maintenir un espace entre le casque et l'avant du visage. Le casque (1) est constitué de deux couches (12 et 13) réunies de façon à former un canal de gaz (16) s'étendant vers une chambre (19) au-dessus du front et comportant des trous de sortie de gaz (20) par lesquels les gaz s'échappent vers l'extérieur, dans le casque. Une chambre de sortie (21), formée dans la zone de la bouche, permet d'extraire les gaz et de les rediriger vers une alimentation en hélium et oxygène recyclés (3).
PCT/GB2010/001640 2009-09-10 2010-08-31 Casque de respiration avec cadre Ceased WO2011030087A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0915817.1A GB0915817D0 (en) 2009-09-10 2009-09-10 Breathing apparatus
GB0915817.1 2009-09-10

Publications (1)

Publication Number Publication Date
WO2011030087A1 true WO2011030087A1 (fr) 2011-03-17

Family

ID=41203487

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2010/001640 Ceased WO2011030087A1 (fr) 2009-09-10 2010-08-31 Casque de respiration avec cadre

Country Status (2)

Country Link
GB (1) GB0915817D0 (fr)
WO (1) WO2011030087A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014031671A1 (fr) * 2012-08-20 2014-02-27 Jamart Tt, Llc Ensemble respirateur

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054480A (en) * 1990-06-14 1991-10-08 Bio Medical Devices, Inc. Personal air filtration and control system
WO2003034923A1 (fr) * 2001-10-24 2003-05-01 Daniel Shahaf Masques respiratoires
US6752150B1 (en) * 1999-02-04 2004-06-22 John E. Remmers Ventilatory stabilization technology
US6763835B1 (en) * 2001-10-01 2004-07-20 The United States Of America As Represented By The Secretary Of The Army Chemical/biological special operations mask
US20070028372A1 (en) * 2005-07-14 2007-02-08 Vanderwoude Brian Medical/surgical personal protection system providing ventilation, illumination and communication
WO2007067829A2 (fr) * 2005-12-05 2007-06-14 Smaldone Gerald C Systemes de distribution de medicament
WO2009070403A1 (fr) * 2007-11-28 2009-06-04 3M Innovative Properties Company Système d'inhalation comprenant une suspension de tête amovible

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054480A (en) * 1990-06-14 1991-10-08 Bio Medical Devices, Inc. Personal air filtration and control system
US6752150B1 (en) * 1999-02-04 2004-06-22 John E. Remmers Ventilatory stabilization technology
US6763835B1 (en) * 2001-10-01 2004-07-20 The United States Of America As Represented By The Secretary Of The Army Chemical/biological special operations mask
WO2003034923A1 (fr) * 2001-10-24 2003-05-01 Daniel Shahaf Masques respiratoires
US20070028372A1 (en) * 2005-07-14 2007-02-08 Vanderwoude Brian Medical/surgical personal protection system providing ventilation, illumination and communication
WO2007067829A2 (fr) * 2005-12-05 2007-06-14 Smaldone Gerald C Systemes de distribution de medicament
WO2009070403A1 (fr) * 2007-11-28 2009-06-04 3M Innovative Properties Company Système d'inhalation comprenant une suspension de tête amovible

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014031671A1 (fr) * 2012-08-20 2014-02-27 Jamart Tt, Llc Ensemble respirateur

Also Published As

Publication number Publication date
GB0915817D0 (en) 2009-10-07

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