WO2014170802A1 - Dispositif respiratoire pour traiter un ronflement - Google Patents

Dispositif respiratoire pour traiter un ronflement Download PDF

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Publication number
WO2014170802A1
WO2014170802A1 PCT/IB2014/060613 IB2014060613W WO2014170802A1 WO 2014170802 A1 WO2014170802 A1 WO 2014170802A1 IB 2014060613 W IB2014060613 W IB 2014060613W WO 2014170802 A1 WO2014170802 A1 WO 2014170802A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow
respiratory device
main body
body portion
snoring
Prior art date
Application number
PCT/IB2014/060613
Other languages
English (en)
Inventor
Meng SHEN
Sheng Jin
Han Yan GONG
Hua Jin
Original Assignee
Koninklijke Philips N.V.
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 Koninklijke Philips N.V. filed Critical Koninklijke Philips N.V.
Publication of WO2014170802A1 publication Critical patent/WO2014170802A1/fr

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
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0666—Nasal cannulas or tubing
    • 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
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A61M16/202—Controlled valves electrically actuated
    • A61M16/203—Proportional
    • A61M16/205—Proportional used for exhalation control
    • 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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter

Definitions

  • the invention relates to a respiratory device, in particular to a respiratory device for treating snoring.
  • a flow of breathing gas flows in a smooth, laminar manner when a person breathes normally. Obstructions that occur along the upper airway of a person will result in air turbulence.
  • the flow of turbulent gas is often accompanied by irregular vibration of structures of the upper airway.
  • Snoring occurs when there is a blockage at a back area of the mouth and the nose through which the flow of breathing gas passes. This back area is collapsible when the structures in this area of the upper airway strike each other and vibrate during breathing so that snoring occurs.
  • the resultant sound, snoring may range from mild to severe.
  • a mechanism for the respiratory devices is based on the EPAP (Expiratory Positive Airway Pressure) which supplies a positive pressure to the patient when the patient exhales.
  • EPAP Extra Positive Airway Pressure
  • the positive pressure during the exhalation is obtained from the patients themselves by increasing the flow resistance to the flow of exhaled gas.
  • a conventional nasal respiratory device generally comprise a hollow main body portion, a pair of nasal prongs extending from and being in fluid communication with the main body portion, a check valve for allowing the flow of gas to flow into the main body portion and a flow resistor for inhibiting the flow of gas from exhalation.
  • the pair of nasal prongs is inserted into the patient's nostrils.
  • this flow resistor keeps a constant and high flow resistance during the whole sleep time even if no flow blockage or snoring occurs. In this case, the patient will suffer from hard exhalation which aggravates discomfort and, furthermore, the excess pressure accumulated in the nasal respiratory device could cause some safety issues.
  • a respiratory device for treating snoring comprising:
  • a main body portion configured to enclose at least one external orifice of a patient's upper airway to form an enclosed space communicating with the patient's upper airway;
  • At least one check valve disposed at the main body portion to allow a flow of inhaled gas to flow into the enclosed space and block a flow of exhaled gas from discharging out of the enclosed space
  • At least one adjustable flow resistor disposed at the main body portion to resist variably the flow of exhaled gas
  • the control unit determines if the real-time pressure exceeds a preset pressure threshold and controls the adjustable flow resistor to reduce the flow resistance to the flow of exhaled gas if the real-time pressure exceeds the preset pressure threshold.
  • the control unit controls the adjustable flow resistor to reduce the flow resistance to the flow of exhaled gas, the potential danger for the patient's respiration caused by the excessive pressure accumulated within the enclosed space may be relieved.
  • the sensor unit is further configured to detect the patient's snoring and convert the patient's snoring into an initial electrical signal, the control unit processes the received initial signal, and the adjustable flow resistor changes the flow resistance to the flow of exhaled gas according to the amplitude of the processed signal.
  • the respiratory device may not only prevent an excess pressure from being accumulated in the enclosed space but also change the flow resistance to the flow of exhaled gas depending on the patient's snoring to avoid any discomfort and danger.
  • control unit comprises a high-pass filter
  • processing the received initial signal comprises removing the low frequency signal from the detected initial signal by the high-pass filter to extract the snoring signal from the received initial signal
  • the adjustable flow resistor changes the flow resistance to the flow of exhaled gas in response to the extracted snoring signal.
  • control unit comprises a low-pass filter
  • processing the received initial signal comprises removing the high frequency signal from the detected initial signal by the low-pass filter to extract the respiratory wave from the received initial signal.
  • the adjustable flow resistor is an electrical valve.
  • the degree of opening of the electrical valve reduces when the amplitude of the snoring signal increases.
  • the electrical valve opens fully when no snoring occurs.
  • the respiratory device further comprises a holdfast for keeping the respiratory device around the patient's head in place.
  • the respiratory device is a nasal respiratory device
  • the main body portion defines a hollow cavity
  • a pair of nasal prongs extend from and are in fluid communication with the hollow cavity
  • the enclosed space is partly formed in the hollow cavity.
  • FIG. 1 is a perspective view of a nasal respiratory device according to the present invention.
  • FIGS. 2a and 2b show an initial signal detected by a sensor unit and a snoring signal extracted from the initial signal respectively.
  • FIGS. 3a and 3b show an initial signal detected by a sensor unit and a respiratory signal extracted from the initial signal respectively.
  • FIG. 1 is a perspective view of a nasal respiratory device according to the present invention.
  • a nasal respiratory device 1 according to the present invention comprises a main body portion 3 in a tubular shape, a pair of nasal prongs 5 extending from and being in fluid communication with the main body portion 3, one or more check valves 7 disposed to allow the flow of inhaled gas to flow into the main body portion 3 and block the flow of exhaled gas from discharging out of the main body portion 3, and one or more adjustable flow resistors 9 disposed to resist variably the flow of exhaled gas depending on the amplitude of the patient's snoring and allow the patient's free exhaling in absence of snoring.
  • the main body portion 3 in the preferred embodiment is shown to be in a tubular shape, the main body portion 3 may be in any suitable shape defining a hollow cavity.
  • the pair of nasal prongs 5 are made from soft and flexible material such as silicone or silicone-like material.
  • the adjustable flow resistor 9 is an electrical valve which is mounted respectively to the opposite ends of the main body portion 3 and is controlled electronically to change a flow resistance to the flow of exhaled gas.
  • the nasal respiratory device 1 according to the present invention may comprise a holdfast 10 for keeping the nasal respiratory device 1 around the patient's head in place.
  • the nasal respiratory device 1 further comprises a sensor unit 11 disposed at the main body portion 3 and a control unit 13 disposed at the main body portion 3.
  • the sensor unit 11 in the illustrated embodiment is disposed outside of the main body portion 3, the sensor unit 11 may be disposed inside of the main body portion 3.
  • the sensor unit 11 is configured to detect the patient's snoring and convert the patient's snoring into an initial electrical signal.
  • the control unit 13 is in electrical communication with the adjustable flow resistor 9 and the sensor unit 11.
  • the control unit 13 receives the initial signal from the sensor unit 11 and processes the received initial signal.
  • the adjustable flow resistor 9 is controlled by the control unit to change the flow resistance to the flow of exhaled gas according to the processed signal.
  • the control unit 13 comprises a high-pass filter and/or a low-pass filter. Processing the received initial signal comprises removing the low frequency signal from the received initial signal through the high-pass filter.
  • the most significant criterion for detecting the initial signal is its sampling rate. The appropriate sampling rate should be around 200 Hz.
  • PSG Polysomnogram
  • FIG. 2a shows the initial signal detected by the sensor unit 11.
  • FIG 2b shows a snoring signal extracted from the initial signal. Therefore, the snoring signals are easily detectable in absence of audio sensor.
  • the control unit 13 sends the extracted snoring signal to the adjustable flow resistor 9.
  • the adjustable flow resistor 9 changes the flow resistance to the flow of exhaled gas according to the amplitude of the snoring signal. The larger the amplitude of the snoring signal is, the higher the flow resistance to the flow of exhaled gas is, thereby establishing a positive air pressure in the upper airway of the patient which effectively prevents the airway from collapsing.
  • the adjustable flow resistor 9 is an electrical valve
  • the degree of opening of the electrical valve reduces when the amplitude of the snoring signal increases. When no snoring occurs, the electrical valve opens fully without establishing any significant flow resistance to the flow of exhaled gas.
  • the amplitude of the snoring signal might means the maximum value of the snoring signal within a certain period, or the amplitude of the snoring signal could means the average value of the snoring signal within a certain period, preferably said certain period is a respiratory circle.
  • processing the received initial signal may further comprise removing the high frequency (i.e. more than 5 Hz) signal from the received initial signal by the low-pass filter of the control unit 13.
  • FIG. 3 a shows an initial signal detected by a sensor unit.
  • FIG 3b shows a respiratory signal extracted from the initial signal. According to the present invention, not only the snoring signal can be detectable but also the respiratory wave may be in-timely recorded.
  • the pressure within the main body portion 3 increases gradually when the adjustable flow resistors 9 resists the flow of exhaled gas. If the pressure accumulated within the main body portion 3 rises too high, the patient may feel breathless and uncomfortable, thereby imposing potential danger for the patient's respiration.
  • the sensor unit 11 is further configured to detect the real-time pressure within the main body portion 3 and send the detected real-time pressure to the control unit 13.
  • the control unit 13 determines if the real-time pressure exceeds a preset pressure threshold. If the real-time pressure exceeds the preset pressure threshold, the control unit 13 controls the adjustable flow resistor 9 to reduce the flow resistance to the flow of exhaled gas, resulting in a larger passage for the flow of exhaled gas.
  • the real-time pressure used to compared with the preset pressure could be an instant value.
  • the real-time pressure will take priority over the amplitude of the patient's snoring. This means if the below two situation are detected by the sensor unit 11 during the same period: (a) the real-time pressure exceeds the preset pressure threshold and (b) the amplitude of the patient's snoring increases, then the (a) situation will prevail, and the control unit 13 will control the adjustable flow resistor 9 to reduce the flow resistance to the flow of exhaled gas.
  • the above-mentioned reduction of the flow resistance of the adjustable flow resistor 9 could be a gradual change, preferably the reduction is a skipping change, for example, when said (a) situation is detected then the adjustable flow resistor 9 will be set to 1 ⁇ 4 open, 1 ⁇ 2 open, 3 ⁇ 4 open or even fully open. As a result, the detected real-time pressure within the main body portion 3 is decreased accordingly to be below the preset pressure threshold, and the breath safety issue will be relieved. In an extreme case, if the adjustable flow resistor 9 has malfunction and closes fully by accident, the sensor unit 11 can detect this situation since the pressure level within the main body portion 3 exceeds the preset pressure threshold. The nasal respiratory device then will start a safety protection function such as trying to open the adjustable flow resistor 9 compulsively or give out an alarm to wake the patient.
  • a safety protection function such as trying to open the adjustable flow resistor 9 compulsively or give out an alarm to wake the patient.
  • the respiratory device for treating snoring according to the invention is a nasal respiratory device.
  • the respiratory device for treating snoring according to the invention may be a nasal/oral mask which covers the patient's nose and mouth.
  • the main body portion of the respiratory device forms the body of the nasal/oral mask so that the external orifices (nostrils and mouth) of the patient's upper airway are enclosed separately from the ambient atmosphere.
  • the respiratory device for treating snoring according to the invention may be an oral mask which covers only the patient's mouth.

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Emergency Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Otolaryngology (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

La présente invention concerne un dispositif respiratoire (1) pour traiter un ronflement, comprenant une partie corps principal (3) configurée pour enfermer au moins un orifice externe des voies aériennes supérieures d'un patient de façon à former un espace fermé communiquant avec les voies aériennes supérieures du patient ; un clapet de non-retour (7) disposé sur la partie corps principal pour permettre à un écoulement de gaz inhalé d'entrer dans l'espace fermé, et pour empêcher un écoulement de gaz expiré de sortir de l'espace fermé ; une résistance à l'écoulement ajustable (9) disposée sur la partie corps principal pour résister de façon variable à l'écoulement de gaz expiré en fonction d'une amplitude du ronflement du patient ; une unité de capteur (11) disposée sur la partie corps principal ; et une unité de commande (13) disposée sur la partie corps principal, l'unité de commande étant en communication électrique avec la résistance à l'écoulement ajustable et l'unité de capteur ; l'unité de capteur étant configurée pour détecter une pression en temps réel dans l'espace fermé, l'unité de commande déterminant si la pression en temps réel dépasse ou non un seuil de pression préréglé et commandant la résistance à l'écoulement ajustable pour réduire la résistance à l'écoulement de gaz expiré si la pression en temps réel dépasse le seuil de pression préréglé. Le dispositif respiratoire selon la présente invention peut empêcher une pression en excès de s'accumuler dans le dispositif respiratoire.
PCT/IB2014/060613 2013-04-19 2014-04-10 Dispositif respiratoire pour traiter un ronflement WO2014170802A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2013074418 2013-04-19
CNPCT/CN2013/074418 2013-04-19

Publications (1)

Publication Number Publication Date
WO2014170802A1 true WO2014170802A1 (fr) 2014-10-23

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6705314B1 (en) * 1998-11-06 2004-03-16 Caradyne (R&D) Limited Apparatus and method for relieving dyspnoea
US20070215156A1 (en) * 2004-04-15 2007-09-20 Resmed Limited Snoring Treatment Apparatus and Methods of Managing Snorers
US20100170513A1 (en) * 2009-01-08 2010-07-08 Bowditch Nathaniel L Self-contained, intermittent positive airway pressure systems and methods for treating sleep apnea, snoring, and other respiratory disorders
US20110259340A1 (en) * 2008-12-30 2011-10-27 Koninklijke Philips Electronics N.V. System and respiration appliance for supporting the airway of a subject
US20120111331A1 (en) * 2008-12-30 2012-05-10 Koninklijke Philips Electronics N.V. System and respiration appliance for supporting the airway of a subject
WO2013005201A1 (fr) * 2011-07-01 2013-01-10 Koninklijke Philips Electronics N.V. Système et méthode pour thérapie respiratoire à débit limité

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6705314B1 (en) * 1998-11-06 2004-03-16 Caradyne (R&D) Limited Apparatus and method for relieving dyspnoea
US20070215156A1 (en) * 2004-04-15 2007-09-20 Resmed Limited Snoring Treatment Apparatus and Methods of Managing Snorers
US20110259340A1 (en) * 2008-12-30 2011-10-27 Koninklijke Philips Electronics N.V. System and respiration appliance for supporting the airway of a subject
US20120111331A1 (en) * 2008-12-30 2012-05-10 Koninklijke Philips Electronics N.V. System and respiration appliance for supporting the airway of a subject
US20100170513A1 (en) * 2009-01-08 2010-07-08 Bowditch Nathaniel L Self-contained, intermittent positive airway pressure systems and methods for treating sleep apnea, snoring, and other respiratory disorders
WO2013005201A1 (fr) * 2011-07-01 2013-01-10 Koninklijke Philips Electronics N.V. Système et méthode pour thérapie respiratoire à débit limité

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