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WO2003000328A1 - Masque facial - Google Patents

Masque facial Download PDF

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Publication number
WO2003000328A1
WO2003000328A1 PCT/GB2002/002918 GB0202918W WO03000328A1 WO 2003000328 A1 WO2003000328 A1 WO 2003000328A1 GB 0202918 W GB0202918 W GB 0202918W WO 03000328 A1 WO03000328 A1 WO 03000328A1
Authority
WO
WIPO (PCT)
Prior art keywords
face mask
patient
mask according
outlet
tester
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/GB2002/002918
Other languages
English (en)
Inventor
Desmond Bryan Mills
Kevin Herbert
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2003000328A1 publication Critical patent/WO2003000328A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/6803—Head-worn items, e.g. helmets, masks, headphones or goggles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Measuring devices for evaluating the respiratory organs
    • A61B5/083—Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption
    • 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
    • A61M16/0048—Mouth-to-mouth respiration
    • 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
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Measuring devices for evaluating the respiratory organs
    • A61B5/097—Devices for facilitating collection of breath or for directing breath into or through measuring devices
    • 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
    • A61M16/105—Filters
    • A61M16/106—Filters in a path
    • A61M16/107—Filters in a path in the inspiratory path
    • 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
    • A61M2230/00—Measuring parameters of the user
    • A61M2230/40—Respiratory characteristics
    • A61M2230/43—Composition of exhalation
    • 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
    • A61M2230/00—Measuring parameters of the user
    • A61M2230/40—Respiratory characteristics
    • A61M2230/43—Composition of exhalation
    • A61M2230/432—Composition of exhalation partial CO2 pressure (P-CO2)

Definitions

  • This invention relates to a face mask adapted for use in cardiopulmonary resuscitation (CPR) , or for mouth to mouth resuscitation.
  • CPR cardiopulmonary resuscitation
  • Face masks are known that have a face engaging part which surrounds at least the mouth of the patient so that substances such as oxygen and gaseous medication can be administered effectively to the patient.
  • Known face masks are shown in US 4811730 which illustrates a CPR facemask, as does US 5469842.
  • US 5735265 discloses a CPR face mask with a filter to provide protection from patient-expired condensate.
  • US 4834085 illustrates a person-to-person resuscitation device, while US 4337767 and US 3815596 discuss a disposable anesthesia mask cover and a disposable face mask respectively.
  • US 3905361 discloses an apparatus for sealing the oesophagus whilst providing artificial respiration and evacuating the stomach.
  • face masks comprised of shields which can be used for mouth to mouth resuscitation.
  • US4050457 and US 3626936 describe typical shields which are constructed of a one piece flexible material that is capable of assuming a complementary sealing relationship over a patient's face. The shields are of dimensions sufficient to cover the face from ear-to ear and from the bridge of the nose to the bottom of the chin.
  • Other mouth to mouth resuscitation masks are described in US 5511543, which discloses a resuscitation device having a unidirectional valve. Disposable resuscitation devices are also described in US 3957046 and US 3802428.
  • Known face masks often include an inlet through which a gas is blown onto a patient via a first outlet. Air exhaled by a patient is vented from the face mask by a second outlet. The flow or air between the first and second outlets is controlled by a flow-valve.
  • An aim of the present invention is to provide a device that provides a rapid and easily readable indication of a patient's condition.
  • a device would indicate the patient's condition passively in order to avoid further analytical time delays.
  • the device would be small, portable, light and be part of or used in combination with an existing emergency medical device.
  • the device ideally has the advantage of being relatively inexpensive to produce and simple to maintain which would enable widespread public use.
  • the invention provides a face mask having a first face-engaging portion which fits over at least the mouth of a patient, an inlet for delivery of a substance to a patient, and an outlet for receiving gases expelled from the patient, the inlet and outlet being separable by a flow-control valve, characterised in that the face mask includes a tester associated with the outlet that indicates the components of gases being exhaled by the patient.
  • the tester is a substrate which gives a visual indication of the gaseous components.
  • the tester ideally would be a pH-sensitive paper or, for example, powder particles or compound granules which are reactive. The tester would react with the exhaled gases in the patient's breath to provide a colour indication of the gases that are being released by the patient.
  • the carbon dioxide level in the breath of a patient is measured during CPR, although a reverse test could be carried out by which the levels of oxygen or even nitrogen that are being exhaled could be measured. It is envisaged that, as well as oxygen levels, other components can be measured such as ketones, for example, if a person has kidney failure, or poisons, e.g. carbon monoxide. It is also envisaged that alcohol levels can be measured by using this face mask and this would be useful as an indication of whether it was safe to give medication to a patient that was found in an unconscious state.
  • the face mask is adapted for use in CPR resuscitation or mouth to mouth resuscitation.
  • the mask can be used in other situations, for example as a mask used in anaesthesia or for the delivery of medicaments to a patient, where it is advantageous to monitor the patient's response to medicaments that are being administered.
  • the medicaments may be either gaseous medicaments or alternatively, they may be administered by other means, for example intravenously.
  • the tester is monitored by a detector that can analyse the result produced.
  • the detector may incorporate a processor that analyses the results against data setting out acceptable limits or standards for the components in the breath that is measured. If the results do not fall within parameters set by the data, then a warning may be given, which could be an audible or visual warning, to the person who is assisting the patient.
  • Figure 1 Shows a perspective view of a face mask in use
  • Figure 2a Shows a sectional view of a face mask of the prior
  • Figure 2b Shows a sectional view of a face mask as shown in figure 1;
  • Figure 3 Shows a graph illustrating carbon dioxide changes during CPR;
  • Fig 4 Shows a perspective view of another form of face mask which is used in mouth to mouth resuscitation.
  • the face mask which is generally shown as 1, comprises a mask part la, which is placed over at least the mouth of the patient, though it may extend over the nose and, possibly, the mask could be a full facial mask.
  • a mask part la which is placed over at least the mouth of the patient, though it may extend over the nose and, possibly, the mask could be a full facial mask.
  • Such an arrangement would be more desirable for the treatment of babies in order to obtain an adequate seal around the baby's face.
  • Gas or air is delivered to the face engaging part of the mask by an inlet 2, through which air can be blown into the mask by a person giving CPR to a person undergoing VT .
  • the air passes through a first outlet, generally indicated as 2a, into a patient's mouth.
  • Air to and from the patient is controlled by control valve, shown as 4.
  • Figures 2a and 2b each show a sectional view of face masks which clearly show the arrangement of inlet 2, a first outlet 3 from the mask, second outlet 5 and control valve 4.
  • Figure 2a shows a face mask with a simple paper indicator
  • figure 2b shows an indicator including an electronic display
  • a flow control valve 4 is positioned between the inlet 2 and the first outlet 3 and a second outlet 5.
  • the flow control valve 4 which ideally is a one way valve, directs air passing upwardly from the patient's mouth into the first outlet 3 so that the air is caused to be released to the external atmosphere through the second outlet 5, without passing to the inlet 2.
  • the flow control valve has a flexible diaphragm 6, operable to prevent airflow from the inlet 2 to the second outlet 5 when the CPR-giving person is blowing into the inlet and to prevent air flow from the first outlet 3 to the inlet 2 when air passes upwardly from the patient's mouth into the first outlet 3.
  • the gas indicator 8 comprises a pH- sensitive indicator, utilising disposable colorimetric paper, placed in an outlet path leading to the second outlet 5.
  • the indicator is a sensitive paper inside a transparent air tube. This is a specially treated membrane sensitive to changes in pH that results from exposure to C0 2 . As the percentage of C0 2 in the patient- exhaled air rises, the colour of the detector changes from purple (less than 0.5%) to tan to yellow (4 to 5%).
  • the presence of a tan or yellow colour is an indicator of a return of spontaneous circulation in the CPR patient.
  • the proportion of gas in exhaled air can be shown by using an electronics display.
  • the indicator 8 includes a power supply for the display and for the monitoring equipment. This may be easily disassembled for ease of replacement of component parts which will contribute to the prolonging of the life of the equipment that is used. Alternatively, the indicator 8 may be a disposable part which can be replaced when the power source is depeleted.
  • End-tidal C0 2 monitoring has recently been promoted to have, among other uses, the ability to detect the return of spontaneous circulation.
  • the percentage of carbon dioxide contained in the last few millilitres of the patient's exhaled air is called the end-tidal carbon dioxide (because its exhaled at the end of the tidal volume) .
  • air exhaled by normally-perfused patient should contain about 4% to 5% C0 2 .
  • Patients in cardiac arrest are not well perfused at all. Even during the best CPR, tissue perfusion is very low and, as a consequence, end-tidal C0 2 falls only to 25 to 30% of normal.
  • a sudden increase in end-tidal C0 2 may be the first indication of a return of spontaneous circulation, as large quantities of "stale" C0 2 -rich blood are returned to the lungs.
  • a simple CPR respirator containing a tester/sensor could be used to indicate return of spontaneous circulation.
  • the colour of the detector changes from purple (less than 0.5%) to tan to yellow (4 to 5%).
  • Presence of a tan or yellow colour is an indicator of a return of spontaneous circulation in the CPR patient and the rescuer should then attempt a pulse check to verify the status of the patient.
  • outlet valve could be coated in, for example, a pH sensitive chemical to allow for easier visual identification of possible circulation. It is possible that other colour change indicators could be used, depending on the type of tests to be carried out, which will depend on the substances that are to be tested for.
  • the face-mask can be connected to an oxygen cylinder via the inlet valve to allow deliveries of 40-100% pure oxygen as is commonly used in post-CPR treatment.
  • the tester could be a photoelectric sensor sensitive to C0 2 concentrations from IR absorption. This would provide an electronic face mask. Crossing of a C0 2 threshold (which is preferably 3%) would lead to an audible or visual alarm indicating a potential return of spontaneous circulation.
  • the electrical sensor could also contain a low battery warning alarm (again visual or audible) to pre-warn the user adequately of potential failure.
  • the electronic face mask could contain sensors capable of monitoring airflow and an indicator/alarm of this. A lack of patient-exhaled airflow would be an indication of an airway blockage that could become potentially fatal if not removed. Also, by monitoring airflow and being attached to an oxygen cylinder, the mask could automatically shut off the inlet/outlet valves to allow for demand feeding of oxygen. Thus the patient would receive oxygen when he or she breathed in but would not have to fight against this oxygen flow when he or she breathed out.
  • a C0 2 photoelectric sensor When using an electronic facemask, a C0 2 photoelectric sensor would allow approximation of the patients 0 2 /C0 2 level, allowing for measurement of the amount of oxygen saturation in the patients blood and thus being able to indicate whether further oxygen treatment is necessary. Also the electronic facemask could be connected to an AED allowing the device to monitor return of spontaneous circulation, airflow, oxygenation levels etc. and adjust or act accordingly.
  • the face mask as described could be used in mouth- to-mouth resuscitation.
  • a face mask for mouth-to-mouth resuscitation would be particularly useful for members of the public to use.
  • a face mask adapted for mouth to mouth resuscitation comprises a shield 9, which includes a mouth opening 10, located substantially centrally thereof.
  • the mouth opening includes a dual valve device 11 or airflow control device adapted to fit within and/or over a patient's mouth to permit air to be blown through the opening into the patient's mouth and to permit separately the exhalation from the patients lungs to be released through the second outlet of the dual valve.
  • On forced inhalation the exhalation valve is closed and on patient exhalation the inhalation valve is closed preventing a reverse flow of fluids and air from the patient to the user .
  • the outlet valve contains a carbon dioxide sensor 12 which is capable of indicating any dramatic change in carbon dioxide levels as is commonly associated with a return of spontaneous circulation following a pulseless period.
  • the inlet valve comprises of a flexible tube 13 with corrugations 14 to allow flexibility.
  • the mouthpiece is moulded such that resuscitation from the side becomes the obvious and easiest method of use.
  • the device is constructed substantially of flat and flexible materials to allow folding and packaging of the device in a compact condition and can be adapted to be discarded after a single use.
  • the mouth to mouth device includes a spring mounted blocker 14, which preferably includes a filter material. This blocker is in proximity to a bypass duct 15.
  • the blocker As the rescuer blows air down the tube 13 into the patient, the blocker is pushed down the tube to the patient and air passes through the bypass duct 15 to the patient. When the patient exhales, the blocker is pushed back towards the rescuer end of the tube 13 and blocks the bypass duct so that air is forced towards the indicator 12.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Physics & Mathematics (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Obesity (AREA)
  • Physiology (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

L'invention concerne un masque facial généralement représenté par (1) à la figure (1) et comprenant un élément masque (1a) destiné à être placé au moins sur la bouche du patient. Un élément (2a) formant un siège vient en contact avec le patient. Le masque facial a une entrée (2) par laquelle l'air entrant dans le masque est cédé au patient. Les gaz exhalés par le patient passent par une première sortie (3) aboutissant à un indicateur (8) qui mesure des paramètres tels que le pH de l'air expulsé et donne une indication de l'état du patient. L'air qui s'écoule sur ou à travers l'indicateur est expulsé du masque facial par une deuxième sortie (5). L'écoulement d'air à l'entrée et à la sortie du masque est commandé par une valve de contrôle de débit (4).
PCT/GB2002/002918 2001-06-25 2002-06-25 Masque facial Ceased WO2003000328A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0115567A GB2379612A (en) 2001-06-25 2001-06-25 Face mask with respiratory gas tester
GB0115567.0 2001-06-25

Publications (1)

Publication Number Publication Date
WO2003000328A1 true WO2003000328A1 (fr) 2003-01-03

Family

ID=9917354

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/002918 Ceased WO2003000328A1 (fr) 2001-06-25 2002-06-25 Masque facial

Country Status (2)

Country Link
GB (1) GB2379612A (fr)
WO (1) WO2003000328A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8370180B2 (en) 2000-06-01 2013-02-05 Telestra Corporation Limited Token delivery system
US9421293B2 (en) 2012-04-17 2016-08-23 Ngee Ann Polytechnic Filtration medium with electrospun metal oxide nanofiber layer
EP3741416A1 (fr) * 2019-05-23 2020-11-25 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Système de poche de réanimation avec une chambre de détection contenant un élément de détection sensible à l'oxygène
EP3741415A1 (fr) * 2019-05-23 2020-11-25 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Système de poche de réanimation doté d'une unité de commande de gaz

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2996750B1 (fr) 2013-05-13 2018-09-19 Karl Küfner GmbH & Co. KG Dispositif d'assistance respiratoire d'urgence
CN103860180B (zh) * 2013-12-16 2016-03-02 中国医学科学院北京协和医院 在心肺复苏（cpr）过程中实时识别自主循环恢复（rosc）
GB2523180A (en) * 2014-02-18 2015-08-19 Waterford Inst Technology A mask for measuring the composition of exhaled breath
CN115281612A (zh) * 2022-07-06 2022-11-04 天世德(北京)科技有限公司 一次性使用吹气装置

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3286710A (en) * 1962-02-09 1966-11-22 Jr Roscoe G Bartlett Apparatus for use in mouth-to-mouth resuscitation
US3815596A (en) 1973-01-26 1974-06-11 Automation Ind Inc Disposable face mask
US3957046A (en) 1974-11-27 1976-05-18 Salvatore G. Militana Disposable mouth to mouth resuscitation device
US4337767A (en) 1981-01-15 1982-07-06 Yahata James I Disposable anesthesia mask cover
US4811730A (en) 1988-07-18 1989-03-14 Seitz Corporation CPR face mask and method of using same
US4834085A (en) 1987-12-10 1989-05-30 Webster Ii John W Person-to-person resuscitation device
US5111543A (en) 1991-04-18 1992-05-12 Alexander Shkolnik Bed with foldable earthquake protective cover
US5429123A (en) * 1993-12-15 1995-07-04 Temple University - Of The Commonwealth System Of Higher Education Process control and apparatus for ventilation procedures with helium and oxygen mixtures
US5469842A (en) 1994-07-11 1995-11-28 Flynn; Stephen CPR face mask
US5735265A (en) 1996-11-21 1998-04-07 Flynn; Stephen CPR face mask with filter protected from patient-expired condensate
US5857460A (en) * 1996-03-14 1999-01-12 Beth Israel Deaconess Medical Center, Inc. Gas-sensing mask
US6123075A (en) * 1991-10-15 2000-09-26 Mallinckrodt, Inc. Resuscitator regulator with carbon dioxide detector
DE10021784A1 (de) * 1999-05-04 2000-11-30 Map Gmbh Anordnung zur Diagnose und/oder Therapie schalfbezogener Atmungsstörungen
WO2001070092A2 (fr) * 2000-03-22 2001-09-27 Cprx Llc Masque de reanimation cardiopulmonaire comportant un metronome de synchronisation de compression et procedes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4127599A1 (de) * 1991-08-21 1993-02-25 Fenyves U Gut Deutschland Gmbh Einrichtung zur ueberwachung der atmung eines patienten
US5285794A (en) * 1992-12-14 1994-02-15 Temple University Of The Commonwealth System Of Higher Education Respiratory gas monitor
AU7197594A (en) * 1993-07-06 1995-02-06 Kjell Alving A system to be used for the determination of no levels in exhaled air and diagnostic methods for disorders related to abnormal no levels
JP2001520068A (ja) * 1997-10-22 2001-10-30 アイディーエス・インテリジェント・ディテクション・システムズ・インコーポレーテッド 呼吸分析に使用されるサンプル捕集及び検出システム

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3286710A (en) * 1962-02-09 1966-11-22 Jr Roscoe G Bartlett Apparatus for use in mouth-to-mouth resuscitation
US3815596A (en) 1973-01-26 1974-06-11 Automation Ind Inc Disposable face mask
US3957046A (en) 1974-11-27 1976-05-18 Salvatore G. Militana Disposable mouth to mouth resuscitation device
US4337767A (en) 1981-01-15 1982-07-06 Yahata James I Disposable anesthesia mask cover
US4834085A (en) 1987-12-10 1989-05-30 Webster Ii John W Person-to-person resuscitation device
US4811730A (en) 1988-07-18 1989-03-14 Seitz Corporation CPR face mask and method of using same
US5111543A (en) 1991-04-18 1992-05-12 Alexander Shkolnik Bed with foldable earthquake protective cover
US6123075A (en) * 1991-10-15 2000-09-26 Mallinckrodt, Inc. Resuscitator regulator with carbon dioxide detector
US5429123A (en) * 1993-12-15 1995-07-04 Temple University - Of The Commonwealth System Of Higher Education Process control and apparatus for ventilation procedures with helium and oxygen mixtures
US5469842A (en) 1994-07-11 1995-11-28 Flynn; Stephen CPR face mask
US5857460A (en) * 1996-03-14 1999-01-12 Beth Israel Deaconess Medical Center, Inc. Gas-sensing mask
US5735265A (en) 1996-11-21 1998-04-07 Flynn; Stephen CPR face mask with filter protected from patient-expired condensate
DE10021784A1 (de) * 1999-05-04 2000-11-30 Map Gmbh Anordnung zur Diagnose und/oder Therapie schalfbezogener Atmungsstörungen
WO2001070092A2 (fr) * 2000-03-22 2001-09-27 Cprx Llc Masque de reanimation cardiopulmonaire comportant un metronome de synchronisation de compression et procedes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8370180B2 (en) 2000-06-01 2013-02-05 Telestra Corporation Limited Token delivery system
US9421293B2 (en) 2012-04-17 2016-08-23 Ngee Ann Polytechnic Filtration medium with electrospun metal oxide nanofiber layer
EP3741416A1 (fr) * 2019-05-23 2020-11-25 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Système de poche de réanimation avec une chambre de détection contenant un élément de détection sensible à l'oxygène
EP3741415A1 (fr) * 2019-05-23 2020-11-25 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Système de poche de réanimation doté d'une unité de commande de gaz
US11666717B2 (en) 2019-05-23 2023-06-06 Air Liquide Medical Systems Resuscitation bag system with a gas control unit

Also Published As

Publication number Publication date
GB0115567D0 (en) 2001-08-15
GB2379612A (en) 2003-03-19

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