WO2017029629A1 - Appareils de réanimation électriques améliorés - Google Patents

Appareils de réanimation électriques améliorés Download PDF

Info

Publication number
WO2017029629A1
WO2017029629A1 PCT/IB2016/054939 IB2016054939W WO2017029629A1 WO 2017029629 A1 WO2017029629 A1 WO 2017029629A1 IB 2016054939 W IB2016054939 W IB 2016054939W WO 2017029629 A1 WO2017029629 A1 WO 2017029629A1
Authority
WO
WIPO (PCT)
Prior art keywords
patient
pressure
tidal volume
piston
subsequent
Prior art date
Application number
PCT/IB2016/054939
Other languages
English (en)
Inventor
Gilbert Jacobus Kuypers
Richard Anthony Mcculloch
Original Assignee
Gilbert Jacobus Kuypers
Richard Anthony Mcculloch
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 Gilbert Jacobus Kuypers, Richard Anthony Mcculloch filed Critical Gilbert Jacobus Kuypers
Publication of WO2017029629A1 publication Critical patent/WO2017029629A1/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
    • A61M16/0057—Pumps therefor
    • A61M16/0072—Tidal volume piston pumps
    • 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
    • A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0066—Blowers or centrifugal pumps
    • 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
    • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
    • A61M16/022—Control means therefor
    • A61M16/024—Control means therefor including calculation means, e.g. using a processor
    • 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
    • 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
    • A61M16/0411—Special features for tracheal tubes not otherwise provided for with means for differentiating between oesophageal and tracheal intubation
    • 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
    • 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
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
    • 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
    • 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
    • A61M16/206—Capsule valves, e.g. mushroom, membrane valves
    • 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
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • 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
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • A61M16/209—Relief valves
    • 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
    • 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
    • A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
    • A61M2016/0036—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the breathing tube and used in both inspiratory and expiratory phase
    • 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
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
    • A61M2016/102—Measuring a parameter of the content of the delivered gas
    • A61M2016/1025—Measuring a parameter of the content of the delivered gas the O2 concentration
    • 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
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
    • A61M2016/102—Measuring a parameter of the content of the delivered gas
    • A61M2016/103—Measuring a parameter of the content of the delivered gas the CO2 concentration
    • 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
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
    • A61M2016/102—Measuring a parameter of the content of the delivered gas
    • A61M2016/1035—Measuring a parameter of the content of the delivered gas the anaesthetic agent concentration
    • 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
    • A61M2202/0225—Carbon oxides, e.g. 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
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/0225—Carbon oxides, e.g. Carbon dioxide
    • A61M2202/0233—Carbon monoxide
    • 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
    • A61M2202/0266—Nitrogen (N)
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/10—General characteristics of the apparatus with powered movement mechanisms
    • A61M2205/106—General characteristics of the apparatus with powered movement mechanisms reciprocating
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/15—Detection of leaks
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3306—Optical measuring means
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3317—Electromagnetic, inductive or dielectric measuring means
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3368—Temperature
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/35—Communication
    • A61M2205/3546—Range
    • A61M2205/3553—Range remote, e.g. between patient's home and doctor's office
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/35—Communication
    • A61M2205/3576—Communication with non implanted data transmission devices, e.g. using external transmitter or receiver
    • A61M2205/3584—Communication with non implanted data transmission devices, e.g. using external transmitter or receiver using modem, internet or bluetooth
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/35—Communication
    • A61M2205/3576—Communication with non implanted data transmission devices, e.g. using external transmitter or receiver
    • A61M2205/3592—Communication with non implanted data transmission devices, e.g. using external transmitter or receiver using telemetric means, e.g. radio or optical transmission
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
    • A61M2205/502—User interfaces, e.g. screens or keyboards
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8206—Internal energy supply devices battery-operated
    • 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
    • A61M2230/04—Heartbeat characteristics, e.g. ECG, blood pressure modulation
    • A61M2230/06—Heartbeat rate only
    • 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
    • A61M2230/20—Blood composition characteristics
    • A61M2230/202—Blood composition characteristics partial carbon oxide pressure, e.g. partial dioxide pressure (P-CO2)
    • 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
    • A61M2230/20—Blood composition characteristics
    • A61M2230/202—Blood composition characteristics partial carbon oxide pressure, e.g. partial dioxide pressure (P-CO2)
    • A61M2230/204—Blood composition characteristics partial carbon oxide pressure, e.g. partial dioxide pressure (P-CO2) partial carbon monoxide pressure (P-CO)
    • 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
    • A61M2230/20—Blood composition characteristics
    • A61M2230/205—Blood composition characteristics partial oxygen pressure (P-O2)
    • 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)
    • 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
    • A61M2230/435—Composition of exhalation partial O2 pressure (P-O2)
    • 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
    • A61M2230/437—Composition of exhalation the anaesthetic agent concentration

Definitions

  • the present invention relates to improvements to resuscitators. More particularly but not exclusively it relates to electrically controlled resuscitators.
  • Resuscitators that can supply pressurised air or oxygen to a patient are well-known. Examples include bag or bellows type resuscitators and pump-like resuscitators and pressure-limited resuscitators. However, there are limitations in certain resuscitators.
  • the operator may feel a resistance when they are applying a force to the device to deliver air or oxygen.
  • the operator may increase the force to overcome the blockage.
  • the blockage clears there is a risk of over- pressurising or overfilling the lungs, thereby causing barotrauma or volutrauma or both.
  • Eliminating human operation of a resuscitator for delivering air to a patient is advantageous. By eliminating the operator the risk of delivering too great a volume of air into the patient and overinflating the patient's lungs, causing volutrauma, is reduced. By eliminating the operator the risk of delivering too great a pressure of air into the patient and therefore over pressurising the patient's lungs, causing barotrauma, is reduced. In resuscitation it is desirable to start at the lowest risk procedure to the patient. The lowest risk procedure is volume resuscitation rather than pressure-limited resuscitation or manual-controlled resuscitation.
  • the present invention consists in a pump for a
  • a rigid cylinder including at least one gas inlet and at least one gas outlet
  • At least one valve assembly configured for allowing gas to be drawn into said cylinder through said at least one gas inlet when the piston is moving in a first stroke direction in said cylinder, and for allowing gas to be displaced through said at least one gas outlet when the piston is moving in a second stroke direction;
  • a controller comprising digital storage media for storing digital instructions and configured for controlling the motor to control the position of the piston in the cylinder to thereby control
  • the controller is configured for receiving inputs including one or more selected from
  • the pump comprises at least one receiver for receiving input signals from a transducer.
  • the pump comprises at least one receiver for receiving input signals from one or more selected from
  • the pump comprises at least one receiver for receiving input signals from a pressure transducer measuring the pressure in a patient interface.
  • the receiver is configured for receiving updated instructions, including updated best practice tidal volumes, respiratory rates and gas pressures for a group of patients.
  • the pump comprises a transmitter for sending output signals including treatment details of a patient.
  • the details of treatment include one or more selected from :
  • the instructions are configured for directing the controller to control the position of the motor in response to detected pressures from the pressure transducer.
  • the present invention consists in a pump for a
  • a primary gas displacement device configured for displacing gas towards a patient interface at intermittent compression cycles
  • a secondary pressurisation device configured for providing a pressurised gas at a constant pressure to a patient interface
  • the primary gas displacement device and the secondary pressurisation device are connected or connectable to a patient interface in a manner whereby the constant pressure provided by the secondary pressurisation device is made available to the patient between the intermittent compression cycles of the primary gas displacement device.
  • the primary gas displacement device is controllable to vary one or more selected from the tidal volume, the pressure and the respiratory rate of gas delivered to a patient in at least each inspiratory cycle.
  • the primary gas displacement device comprises
  • a rigid cylinder including at least one gas inlet and at least one gas outlet
  • At least one valve assembly configured for allowing gas to be drawn into said cylinder through said at least one gas inlet when the piston is moving in a first stroke direction in said cylinder, and for allowing gas to be displaced through said at least one gas outlet when the piston is moving in a second stroke direction;
  • ⁇ a controller configured for controlling the motor to control the position of the piston in the cylinder to thereby control
  • the secondary pressurisation device is a blower.
  • the secondary pressurisation device is configured to receive gas from a gas source.
  • the gas source is an oxygen tank.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of: • controlling the linear motor to move the piston in an opposite direction to the direction the piston moved during the inhalation stroke.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the control ler to carry out the steps of: • detecting whether the initial pressure or subsequent incremental pressures of the gas in the patient interface are released by inflation of the patients lungs within a predetermined period, and
  • the instructions are configured for directing the controller to carry out the steps of:
  • ⁇ if the initially generated pressure of the gas in the patient interface has been released, controlling the motor to move the piston to sustain a delivery of gas at one or more selected from a predetermined pressure, a predetermined tidal volume and a predetermined volume flow rate, until the pressure of the gas in the patient interface rises to a predetermined threshold, after which the piston is stopped.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • ⁇ controlling the motor to move the piston to sustain a delivery of gas to a predetermined maximum tidal volume in accordance with the comparison of the rate of release of pressure in the patient interface with predetermined thresholds.
  • the predetermined thresholds for tidal volumes, pressures and respiratory rates are predetermined according to best practice.
  • the predetermined thresholds for tidal volume, respiratory rate and pressure are determined by the controller as directed by the instructions in accordance with received patient details.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the number of inspiratory cycles delivered at the manual pressure is predetermined, after which the controller starts delivering subsequent tidal volumes at the maximum best practice pressure again.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the step of interrogating a data store for a target pressure comprises the step of:
  • the instructions are configured for directing the controller to carry out the step of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of: • receiving an initial pressure signal indicative of one or more selected from the pressure in the patient interface and the pressure in the patient airways; and
  • the delivered initial tidal volume is the initially predetermined tidal volume.
  • the instructions are configured for directing the controller to carry out the step of:
  • ⁇ receiving a subsequent pressure signal indicative of one or more selected from the pressure in the patient interface and the pressure in the patient airways after delivery of the initial tidal volume.
  • the instructions are configured for directing the controller to carry out the step of:
  • the step of comparing the initial pressure signal and the subsequent pressure signal may include determining the rate of change of pressure.
  • the instructions are configured for directing the controller to carry out the step of:
  • ⁇ determining a tidal volume increment in accordance with the comparison of the initial pressure signal and the subsequent pressure signal.
  • the determination of the tidal volume increment is by interrogating a data store using the comparison of the initial pressure signal and the subsequent pressure signal.
  • the instructions are configured for directing the controller to carry out the step of:
  • the step of determining the tidal volume increment is by retrieving a tidal volume increment from a data store
  • the instructions are configured for directing the controller to carry out the step of:
  • the subsequent tidal volume is the initial tidal volume plus the tidal volume increment.
  • the instructions are configured for directing the controller to carry out the step of: • controlling movement of the motor to move the piston to deliver a subsequent tidal volume.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the alert signal is displayed on a screen instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of: • receiving a best practice initial respiratory rate signal indicative of a best practice initial respiratory rate from a data store.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the step of determining the subsequent respiratory rate is by subtracting the respiratory rate increment from the last respiratory rate.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of: • determining an expiratory cycle time threshold signal indicative of the maximum time limit of the expiratory cycle of a patient.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to determine a signal indicative of the pressure in the patient interface.
  • the signal indicative of the pressure in the patient interface is determined using signals indicative of one or more of
  • the instructions are configured for directing the controller to control the maximum pressure exertable by the piston by limiting one or more selected from
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • ⁇ receiving a patient pressure signal indicative of the pressure of the gas at or about one or more selected from the patient interface and the patient's airways.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the received maximum pressure signal is received in response to an interrogation of the data store for a maximum pressure signal corresponding to input patient's details.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the step of determining a compensated tidal volume comprises the step of interrogating a data store for one or more selected from
  • the step of determining a compensated tidal volume comprises the step of interrogating a data store for one or more selected from
  • the step of interrogating the data store comprises transmitting a set of associated parameters to retrieve an associated
  • the associated parameters may comprise one or more of
  • the flow sensor is configured for sending a flow signal indicative of the flow arte through the patient interface.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of: • comparing the initial patient pressure signal and the subsequent patient pressure signal.
  • ⁇ determining if the subsequent patient pressure signal has dropped below the initial patient pressure signal by a predetermined amount.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • ⁇ receiving a subsequent patient flow rate signal indicative of the flow rate in one or more of the patient interface and the patient's airways during an expiratory cycle of the patient.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of retrieving the predetermined amount from a data store.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the patient interface comprises a gas level sensor.
  • the controller is configured to receive a gas level signal from a gas level sensor.
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the instructions are configured for directing the controller to carry out one or more selected from the steps of:
  • the gas level sensor is one or more selected from a :
  • the pump comprises a blower arrangement for providing a minimum CPAP pressure.
  • the pump and the blower are configured to cooperate together in operation to ensure that a minimum predetermined pressure is always provided to one or more selected from the patient interface and the patient.
  • a gas flow controller Preferably wherein intermediate of the patient interface and the at least one outlet of the cylinder and in said ducted fluid connection therewith is a gas flow controller.
  • the gas flow controller includes a one way valve that allows gas to be displaced from the outlet of the cylinder towards the patient interface and prevents gas from flowing through the one way valve in the opposite direction.
  • the gas flow controller includes a valved exhaust port via which gas can exhaust to relieve pressure at the patient interface.
  • valved exhaust port assumes a closed condition when the piston is moving in a direction to displace gas towards the patient interface and assumes an open condition when the piston is moving in the opposite direction to allow gas due to exhalation of or by the patient to pass through the exhaust port.
  • valved exhaust port includes at least one opening closable by a valve, said valve mounted on or to or in operative association with an actuator to actively control the movement of the valve relative the opening.
  • valved exhaust port includes at least one opening closable by a valve, said valve mounted for movement relative the opening in a passive manner under the influence of pressure differential in the gas from controller and/or between the gas flow controller and ambient gas pressure.
  • valved exhaust port includes at least one opening closable by a valve, said valve mounted on or to or in operative association with an actuator to actively control the movement of the valve relative to the opening.
  • the actuator is a voice coil actuator.
  • valved exhaust port includes at least one opening closable by a valve, said valve mounted for movement relative the opening in a passive manner under the influence of pressure differential in the gas from controller and/or between the gas flow controller and ambient gas pressure.
  • said motor stops or reduces the velocity of the piston.
  • a controller is coupled to said motor to control at least the velocity and position of the motor to thereby control movement of the piston in the cylinder.
  • said controller is coupled to said actuator to move said actuator preferably in a manner in synchronicity with control of said motor.
  • said source of electricity is connected or connectable to said motor via said controller.
  • the controller can be instructed to operate the device in a suitable manner.
  • the interface allows for patient-related information to be entered into the controller, the information including at least one selected from a patient's age, length and weight.
  • the controller receives data from other parts of the device, including at least one of gas pressure at the patient interface and tidal volume delivery at the patient interface.
  • a display is provided to display operating conditions of said device.
  • the operating conditions displayed may include
  • the operating conditions may also be recorded for subsequent reference.
  • fluid connection between said outlet of said cylinder and the patient interface is defined in part by a flexible conduit and said flow controller is located more proximate said patient interface than said cylinder.
  • the ducted fluid connection and/or the patient interface includes a pressure relief valve to allow pressure reduction of gas in said patient interface.
  • the pressure relief valve becomes operative to relieve pressure when the pressure in said patient interface reaches a certain threshold.
  • said pump includes an inlet volute.
  • the inlet volute includes an opening to allow pressure relief of said inlet volute to occur.
  • said inlet volute includes a one way valve to allow pressure relief to occur into the inlet volute.
  • the said inlet volute includes a pressure relief valve to allow pressure relief to occur out of said inlet volute.
  • said inlet of said cylinder is in fluid connection with a supplementary gas supply to allow supplementary gas from said supplementary gas supply to pass into said cylinder for subsequent delivery to the patient.
  • the supplementary gas is oxygen.
  • said cylinder is split into two zones by said piston, a first zone being on one side of said piston and a second zone being on the other side of said piston and wherein said gas inlet(s) are provided to allow gas into the first zone and said gas outlet(s) are provided to allow gas out of said second zone, wherein a one way pump valve is provided to allow gas to transfer from said first zone to said second zone and that restricts flow in the opposite direction.
  • the one way pump valve is carried by the piston to operate on a passage through the piston.
  • gas in said first zone is or becomes pressurised sufficiently to, upon the movement of the piston in its first stroke direction, allow some of the gas to displace through the one way pump valve into the second zone.
  • the one way pump valve is a passive one way valve that moves between an open and closed condition dependent on pressure differential across the one way pump valve.
  • a one way valve inlet one way valve
  • a one way valve may be provided to allow gas to be drawn into the first zone upon the movement of the piston in its second stroke direction and that restricts flow of gas in the opposite direction through said inlet one way valve upon the movement of the piston in the first stroke direction.
  • the inlet one way valve is a passive one way valve that moves between an open and closed condition dependent on pressure differential across the inlet one way valve.
  • one or each of the one way valves mentioned are valves under active control to be in the open and closed conditions in correspondence with the direction of movement of the piston.
  • the cylinder and piston stroke length are of a size to allow a sufficient volume of gas to be displaced from said cylinder through said gas outlet(s) during said second direction of movement of the piston to deliver a desired volume and flow rate of gas for a single inhalation to a neonatal patient for resuscitation purposes.
  • said cylinder is split into two zones by said piston, a first zone being on one side of said piston and a second zone being on the other side of said piston, and wherein the pump is a double acting pump that includes:
  • first gas inlet a gas inlet of said cylinder during movement of the piston in its second direction of movement
  • first gas outlet a gas outlet of said cylinder during movement of the piston in its first direction of movement
  • ® allow gas to enter into the second zone via a said gas inlet (herein after "second gas inlet") of said cylinder during movement of the piston in its first direction of movement, and ® restrict gas flow in the opposite direction through said second gas inlet during movement of the piston in the second direction of movement
  • ® a manifold or ducting to duct gas from said first and second outlets to said patient interface.
  • each of at least one of the first to fourth one way valves are either actively controlling or passive in moving between their open and closed conditions.
  • the cylinder and piston stroke length are of a size, and the motor is able to move and be controlled, to allow a sufficient volume of gas to be displaced from said cylinder through said gas outlet(s) during multiple oscillations of the piston to deliver a desired volume and flow rate of gas for a single inhalation to a patient for resuscitation purposes or ventilation purposes or both.
  • the pump is a double acting pump and the motor is of a sufficient speed to, in multiple stokes of the piston, deliver a single tidal volume of gas for a single inhalation to a patient for ventilation and/or resuscitation purposes.
  • the device is portable.
  • At least one of the pump and patient interface and motor are portable and preferably unitary and preferably able to be held in one hand by a user.
  • At least one of the controller and power supply and display are also portable and preferably unitary and preferably able to be held in one hand by a user.
  • Preferably communication to and from the controller may be wireless.
  • the pump comprises a plurality of pumping assemblies, with each pumping assembly comprising a piston movable within a cylinder in a reciprocating fashion.
  • the plurality of pistons are connected to the motor.
  • each pumping assembly comprises a first one way valve and a second one way valve.
  • the first one way valve is configured for allowing air into a compression zone in the corresponding cylinder when the piston is moving in one direction
  • the second one way valve is for allowing compressed gas to exit from the compression zone for guidance towards a patient interface when the piston is moving in an opposite direction
  • the pistons define one or more selected from an aperture and a recess for facilitating flow of gas into the compression zone.
  • the cylinder defines one or more selected from an aperture and a recess for facilitating flow of gas into the compression zone.
  • the first one way valve is located on the piston, and facilitates flow of gas through said one or more selected from an aperture and a recess.
  • each of the second one way valves is disposed at an outlet to their corresponding cylinders.
  • the motor is a linear motor
  • the pumping assemblies are disposed at opposite ends of the linear motor.
  • the pistons are each coupled to the linear motor.
  • the pump comprises at least one or more bypass valves by which the fluid communication of at least one pumping assembly with the patient interface can be at least partially restricted.
  • the pump comprises at least one or more bypass valves by which the fluid communication of at least one pumping assembly with the patient interface can be at least partially restricted to change said pump from acting as a double acting pump to acting as a single acting pump.
  • the at least one or more bypass valves are controlled or controllable by the controller.
  • the at least one or more bypass valve can be actuated to vent compressed gas from at least one of the pump assemblies to atmosphere.
  • the invention may be said to consist in a method of controlling a resuscitator device, the method comprising the steps of
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of: • controlling the linear motor to move the piston in an opposite direction to the direction the piston moved during the inhalation stroke.
  • the method comprises the steps of:
  • ⁇ determining a velocity signal indicative of the speed of movement of the linear motor and hence piston.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • predetermined tidal volume and a predetermined volume flow rate until the pressure of the gas in the patient interface rises to a predetermined threshold, after which the piston is stopped.
  • the method comprises the steps of:
  • predetermined tidal volume and a predetermined volume flow rate until the pressure of the gas in the patient interface rises to a predetermined threshold, after which the piston is stopped.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • ⁇ controlling the motor to move the piston to sustain a delivery of gas to a predetermined maximum tidal volume in accordance with the comparison of the rate of release of pressure in the patient interface with predetermined thresholds.
  • the predetermined thresholds for tidal volumes, pressures and respiratory rates are predetermined according to best practice.
  • the predetermined thresholds for tidal volume, respiratory rate and pressure are determined by the controller as directed by the instructions in accordance with received patient details.
  • the pressure created by the piston is controlled by controlling one or more selected from the voltage and the current to the motor.
  • the motor is a linear motor.
  • the motor is a linear servomotor.
  • control of the motor is by feedback loop control.
  • control of the motor is by feedback loop control based on feedback received from a pressure transducer.
  • control of the motor is by open loop control.
  • the method comprises the steps of:
  • the patient details are input by an operator and are one or more selected from the patient's age, weight and length.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • pressure signal is equal or exceeds the maximum best practice pressure signal.
  • the method comprises the steps of: • comparing the best practice tidal volume to the subsequent tidal volume. In one embodiment, the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises delivering a predetermined number of inspiratory cycles at the manual pressure, and thereafter starts delivering subsequent tidal volumes at the maximum best practice pressure.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the delivered initial tidal volume is the initially predetermined tidal volume.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the step of comparing the initial pressure signal and the subsequent pressure signal includes the step of determining the rate of change of pressure.
  • the method comprises the steps of:
  • the determination of the tidal volume increment is by interrogating a data store using the comparison of the initial pressure signal and the subsequent pressure signal.
  • the method comprises the steps of:
  • the step of determining the tidal volume increment includes the step of retrieving a tidal volume increment from a data store
  • the method comprises the steps of: • determining a subsequent tidal volume to be delivered to a patient.
  • the subsequent tidal volume is the initial tidal volume plus the tidal volume increment.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • ⁇ controlling the movement of the linear motor to incrementally increase the tidal volume delivered via the patient interface.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • ⁇ providing a manual override option to an operator, whereby one or more selected from the tidal volume, the inspiratory pressure being delivered by the pump and the respiratory rate is manually settable.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • ⁇ receiving a best practice initial respiratory rate signal indicative of a best practice initial respiratory rate from a data store.
  • the method comprises the steps of: • receiving a best practice initial respiratory rate signal indicative of a best practice initial respiratory rate from a data store.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the instructions are configured for directing the controller to carry out the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the step of determining the subsequent respiratory rate is by btracting the respiratory rate increment from the last respiratory rate.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of: • receiving a pressure signal from a pressure sensor in one or more selected from the patient interface and the patient's airway.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the instructions are configured for directing the controller to determine a signal indicative of the pressure in the patient interface.
  • the instructions are configured for directing the controller to control the pressure generated by the piston by controlling one or more selected from
  • the instructions are configured for directing the controller to control the maximum pressure exertable by the piston by limiting one or more selected from
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the received maximum pressure signal is received in response to an interrogation of the data store for a maximum pressure signal corresponding to input patients details.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the step of determining a compensated tidal volume comprises the step of interrogating a data store for a compensation factor associated with the inlet pressure signal.
  • the step of determining a compensated tidal volume comprises the step of interrogating a data store for one or more selected from
  • the step of interrogating the data store comprises transmitting a set of associated parameters to retrieve an associated
  • the flow sensor is configured for sending a flow signal indicative of the flow arte through the patient interface.
  • the controller is configured for receiving the flow signal.
  • the method comprises the steps of: • integrating the flow sensor readings from the start of the inspiration cycle of a patient to the end of the inspiration cycle of a patient to determine a patient tidal volume.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of: • receiving an initial patient flow rate signal indicative of the gas flow rate in one or more of the patient interface and the patient's airways during an expiratory cycle of the patient.
  • the method comprises the steps of:
  • ⁇ receiving a subsequent patient flow rate signal indicative of the flow rate in one or more of the patient interface and the patient's airways during an expiratory cycle of the patient.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the patient interface comprises a gas level sensor.
  • the method comprises the steps of:
  • the method comprises the steps of:
  • the gas level sensor is one or more selected from a :
  • the present invention consists in a resuscitator as herein before described and as herein described with reference to the accompanying drawings.
  • the present invention consists in a pump for a resuscitator as herein before described and as herein described with reference to the accompanying drawings.
  • a. receiving a best practice maximum pressure signal associated with a best practice maximum pressure for a respiratory cycle to be delivered to a patient associated with the patient details.
  • the method comprises the step of:
  • the step of receiving an airway pressure signal indicative of the patient airway pressure includes the step of determining the patient pressure in one or more selected from a patient's airway and a patient interface.
  • step of determining the patient pressure comprises one or more of the steps selected from :
  • the method comprises the steps of:
  • the method comprises the step of:
  • the method comprises the step of:
  • the method comprises the step of:
  • the method comprises the step of:
  • the method comprises the step of:
  • the method comprises the step of:
  • the method comprises the step of:
  • iii a temperature signal indicative of the temperature of gas in the patients airways; and iv. a flow signal indicative of one or more selected from
  • the method comprises the step of:
  • a tidal volume increment signal indicative of an incremental increase in tidal volume to be delivered in a subsequent respiratory cycle
  • tidal volume signal indicative of the increased tidal volume to be delivered in a subsequent respiratory cycle
  • a respiratory rate signal indicative of the respiratory rate at which subsequent respiratory cycles are to be delivered
  • a respiratory rate increment signal indicative of the increment by which the current respiratory rate is to be changed
  • the method comprises the step of:
  • a tidal volume increment signal indicative of an incremental increase in tidal volume to be delivered in a subsequent respiratory cycle
  • a tidal volume signal indicative of the increased tidal volume to be delivered in a subsequent respiratory cycle
  • a respiratory rate signal indicative of the respiratory rate at which subsequent respiratory cycles are to be delivered
  • a respiratory rate increment signal indicative of the increment by which the current respiratory rate is to be changed.
  • step of controlling the motor to move the piston to deliver an incrementally increased tidal volume includes the step of delivering said incrementally increased tidal volume at a respiratory rate that is incrementally increased or decreased.
  • the method comprises the step of:
  • the method comprises the step of:
  • the method comprises the step of:
  • the method comprises the step of:
  • the alert signal includes one or more steps selected from:
  • step of controlling movement of motor and hence the piston to stop further delivery of gas to the patients comprises one or more selected from the steps of:
  • the method comprises the step of:
  • the method comprises the step of:
  • the method comprises the steps of:
  • a tidal volume increment signal indicative of an incremental decrease in tidal volume to be delivered in a subsequent respiratory cycle
  • a tidal volume signal indicative of the decreased tidal volume to be delivered in a subsequent respiratory cycle
  • a respiratory rate signal indicative of the respiratory rate at which subsequent respiratory cycles are to be delivered
  • a respiratory rate increment signal indicative of the increment by which the current respiratory rate is to be changed.
  • the reduced subsequent tidal volume is determined from the tidal volume delivered during the last inspiratory cycle and the tidal volume increment signal.
  • the step of interrogating the data store comprises the step of transmitting treatment details to a data store.
  • step of interrogating the data store comprises the step of transmitting treatment details for indexing against one or more selected from a. an index
  • treatment details are any one or more selected from:
  • the tidal volume delivered during any current or prior respiratory cycle e. the tidal volume delivered during any current or prior respiratory cycle. f. the patients airway pressure at any point during any current or prior respiratory cycle;
  • the input patient details relate to one or more selected from the patient's age, weight or length.
  • the method comprises the step of:
  • the method comprises the steps of:
  • the present invention comprises a resuscitation device for delivering gas to a patient in respiratory cycles comprising alternating respiratory and expiratory cycles, said resuscitation device comprising :
  • a rigid cylinder including at least one gas inlet and at least one gas outlet
  • a piston movable in said cylinder in a reciprocating manner in at least a first stroke direction and a second stroke direction
  • At least one valve assembly configured for allowing gas to be drawn into said cylinder through said at least one gas inlet when the piston is moving in a first stroke direction in said cylinder, and for allowing gas to be displaced through said at least one gas outlet when the piston is moving in a second stroke direction;
  • a controller configured for controlling the motor to control the position of the piston in the cylinder
  • the controller comprising digital storage media for storing digital instructions, ii. wherein the instructions are configured for carrying out the method according to any one of claims 1 to 35.
  • the present invention comprises a method of controlling a resuscitator device, to be carried out by a controller, the method comprising the steps of
  • the method comprises the step of:
  • a carbon monoxide signal indicative of the levels of carbon monoxide in the patient's airways or bloodstream during any current or prior respiratory cycle
  • a patient airway pressure difference signal indicative of the difference between the patient airway pressure at the end of an initial respiratory cycle and the patient airway pressure at the end of a subsequent respiratory cycle
  • the method comprises the step of a. determining a pressure difference signal indicative of the pressure difference in the patients airways from one inspiratory cycle to the next.
  • the pressure difference signal is indicative of the pressure difference in the patient's airways from the end of the last inspiratory cycle to the end of the current inspiratory cycle.
  • the method comprises the step of:
  • a subsequent tidal volume signal indicative of a subsequent tidal volume to be delivered to the patient in a subsequent respiratory cycle
  • a subsequent respiratory rate signal indicative of a respiratory rate at which a subsequent respiratory cycle is to be delivered to a patient
  • a subsequent I E ratio indicative of the I: E ratio at which a subsequent respiratory cycle is to be delivered to a patient;
  • a subsequent maximum pressure signal indicative of the maximum pressure at which a subsequent inspiratory cycle is to be delivered to a patient.
  • step of delivering an increased subsequent tidal volume is delivered at one or more selected from
  • step of interrogating the data store comprises the step of transmitting treatment details for indexing against one or more selected from:
  • the I E ratio of the tidal volume to be delivered to the patient; and v. the respiratory rate at which gas is to be delivered to the patient; b. displaying a message on a monitor,
  • step of controlling movement of motor and hence the piston to stop further delivery of gas to the patients comprises one or more selected from the steps of
  • the method comprises the step of:
  • the method comprises the step of:
  • the method comprises the step of:
  • a manual override I E ratio set by the operator; and iv. a manual override respiratory rate set by the operator;
  • the method comprises one or more steps selected from:
  • the method comprises the step of
  • a rigid cylinder including at least one gas inlet and at least one gas outlet
  • a piston movable in said cylinder in a reciprocating manner in at least a first stroke direction and a second stroke direction
  • At least one valve assembly configured for allowing gas to be drawn into said cylinder through said at least one gas inlet when the piston is moving in a first stroke direction in said cylinder, and for allowing gas to be displaced through said at least one gas outlet when the piston is moving in a second stroke direction;
  • a controller configured for controlling the motor to control the position of the piston in the cylinder
  • Figure 2 is a schematic view of a resuscitator and is shown to describe it in the exhalation phase
  • Figure 3 shows the resuscitator in a CPAP mode wherein a supplementary gas is supplied to the resuscitator
  • Figure 4 is a schematic view of a variation of the resuscitator shown in Figures 1-3, also in a CPAP mode and wherein a flexible conduit extends between parts of the resuscitator to provide to some extent, independence of movement of the face mask relative some of the other components of the resuscitator
  • Figure 5 is a schematic view of a variation of the resuscitator shown in an exhalation phase with reference to Figures 1-4,
  • Figure 7 is a schematic view of the resuscitator of Figure 5 shown in an inhalation phase
  • Figure 9 illustrates the resuscitator of Figure 5, wherein a flexible conduit is provided intermediate of certain parts of the resuscitator to provide, to a certain extent, independence of movement of the face mask relative to some of the other components of the resuscitator,
  • Figure 10 is a sectional view of the face mask shown to include a flow and tidal volume sensor wherein the gas flow is shown in an inhalation direction, and
  • Figure 11 is a variation to that shown in Figure 10 wherein it is shown in an exhalation condition.
  • Figure 12 shows a schematic view of inserted single acting resuscitator pump, with a separate CPAP blower and CPAP gas bypass conduit;
  • Figure 13 shows a schematic view of a double acting resuscitator
  • Figure 15 is a flow chart showing how acceleration of a piston may be determined
  • Figure 16 is a flow chart showing how the maximum pressure in the patient interface may be controlled
  • Figure 17 is a flow chart showing how the rate of change of pressure may be monitored and used to control the resuscitator
  • Figure 18 is a piston displacement v time graph of an inspiratory cycle
  • Figure 19 shows a pressure-time graph of an inspiratory cycle
  • Figure 20 is a flow chart showing one embodiment of how pressure created by the piston may be increased in increments, while being maintained under a maximum tidal volume;
  • Figure 21 is a pressure v time graph of an inspiratory cycle
  • Figure 22 is a flow chart showing how delivery of an initial tidal volume may be increased in increments while maintaining pressure under a best practice threshold pressure
  • Figure 23 is a flow chart showing a control sequence to prevent ramping
  • Figure 24 is a flow chart showing a control sequence for compensating for pre- pressurisation of gas at CPAP pressures; and Figure 25 is a flow chart showing a control sequence for detecting and
  • Figure 26 is a graph of tidal volume versus time and airway pressure versus time showing a series of typical respiratory cycles
  • Figure 27 is a graph of tidal volume versus time and airway pressure versus time showing a series of respiratory cycles in which the patient's airways are blocked;
  • Figure 28 is a graph of tidal volume versus time and airway pressure versus time showing a series of respiratory cycles where a minimum CPAP pressure is maintained;
  • Figure 29 is a graph of tidal volume versus time and airway pressure versus time showing how ramping occurs in a series of respiratory cycles
  • Figure 30 is a graph of tidal volume versus time and airway pressure versus time illustrating a time period after an initial respiratory cycle after which triggering mode can become actuated;
  • Figure 31 is a graph of tidal volume versus time and airway pressure versus time illustrating best practice delivery mode
  • Figure 32 is a graph of total volume versus time and airway pressure versus time illustrating auto mode
  • Figure 33 is a flow chart showing an embodiment of a control sequence for the best practice delivery mode
  • Figure 34 is a flow chart showing an embodiment of a control sequence for auto mode.
  • Figure 35 is a graph of tidal volume versus time and airway pressure versus time showing how an operator can override a control process.
  • the resuscitator 1 consists of a resuscitator body 2. It may also include associated hardware such as a controller 3, a display 4 and power supply 5 connected to each other and/or the resuscitator body 2.
  • the resuscitator body 2 consists of a pump unit 6, a flow control unit 7 and preferably a patient interface 8.
  • the pump unit 6 includes a pump that will deliver air to the flow control unit 7.
  • the flow control unit 7 will control the flow of gas between the patient interface and the flow control unit 7 in conjunction with or without the pump unit 6 depending on the status of operation of the resuscitator 1.
  • pump unit 6 and flow control unit 7 are part of the same body as for example shown in Figure 1.
  • a conduit 9 extending between the flow control unit 7 and the patient interface 8 facilitates the flow of gas between the interface and the flow control unit 7.
  • the interface is preferably a face mask.
  • the interface may be an endotracheal tube or naso- tube that extends partly into the patient's airway.
  • the pump unit 6 consists of a piston 10 that locates in a cylinder 11 to displace gas through an outlet 12 of the cylinder and to the flow control unit 7.
  • the piston and cylinder are a complementary shape and make sure that a sufficiently tight seal exists between the piston and cylinder for the purposes of positively displacing gas through the outlet 12.
  • the cylinder 11 may be cylindrical in cross-section or may be any other shape in cross-section.
  • the piston is actuated via its connection rod 14, by a motor 13.
  • the motor is an actuator preferably a linear motor.
  • the actuator may be a servomotor, stepper motor or similar device.
  • the motor comprises a feedback mechanism operable, in conjunction with a processing device, to allow accurate control of the piston displacement.
  • the processing device is a microcontroller, digital signal processor or similar device capable of receiving a signal indicative of displacement and making decisions based on stored or formulaic data.
  • the feedback mechanism and processing device preferably act in a closed loop. That is, changes in sensor readings are measured by the processing device and the processing device outputs a signal to control movement of the motor based on that reading.
  • the feedback mechanism preferably comprises a device for transferring energy associated with piston movement or piston position into electrical energy for sensing by the processing device.
  • Such devices include optical, capacitive or inductive sensors sensitive to the proximity between a moveable component of or on the motor and the sensor, a resistive sensor which typically has a resistive wiper arm, or may comprise other sensory methods such as measurement of the back electromotive force generated following energising of the motor.
  • Fine control of the motor displacement is a function of the resolution of the processing device and sensor used, and the commutation step resolution of the motor itself.
  • a step-less motor may be used.
  • a Hall effect sensor is implemented to detect small changes in displacement of a ferrous component of the motor. The Hall sensor generates small voltages in response to a change in displacement that the processing device can sense and act on accordingly.
  • connection rod 14 must be the reactor to operate in conjunction with the motor 13 for the purposes of displacing the piston.
  • the connection rod 14 may be the reactor to operate in conjunction with the motor 13 for the purposes of displacing the piston 10 in the cylinder 11 in an oscillating or reciprocating manner.
  • the connection rod 14 may carry a reactor plate or surface in conjunction with the motor 13. In the figures, the connection rod 14 is acted upon directly by the motor 13.
  • the reactor plate may also be incorporated as part of the piston to be integral therewith. No connection rod need then be provided.
  • linkage may include a rotor and crank and connection rod. It will be appreciated that regardless of which part of a linear motor the piston is attached to, it is the relative movement between the at least two parts that is used to create relative movement between the piston and the cylinder.
  • the motor 13 is a linear motor or any other motor that has accurate and rapid positional control capabilities.
  • the controller 3 via a connection 15 with the motor 13 will operate the motor in a manner so that the desired delivery or respiratory rate, flow rate, tidal volume and pressures are being delivered through the outlet opening 12.
  • the flow control unit 7 consists of an inlet that may coincide with or define the outlet 12 of the pump unit.
  • the flow control unit includes an outlet 20 and a passage extending between the inlet and outlet.
  • the passage allows the transmission of gas being displaced from the pump unit 6 to the outlet 20.
  • the outlet 20, preferably via a conduit 9, allows the delivery of this gas to the patient interface 8.
  • a one-way valve 21 Intermediate of the inlet and outlet of the flow control unit is a one-way valve 21.
  • the one-way valve allows for gas to travel from the inlet towards the outlet via the passage but prevents flow of gas from the outlet to the inlet.
  • the valve 21 may be mounted in a fixed manner to the housing 22 of the flow control unit 7 or alternatively and as shown in Figure 1, may be mounted to a movable mount 23 to move the valve mount.
  • the movable mount 23 forms part of a voice coil actuator 24 that can displace the movable mount 23 between two positions.
  • the first position is as shown in Figure 1 and the second position is as shown in Figure 2.
  • the moveable mount 23 is located in a position so that at least on the outlet 20 side of the valve 21, no other opening to the passage of the flow control unit 7 is created. All gas that is displaced by the pump unit 6 is captured for flow towards the patient interface 8.
  • an opening 27 is created between part of the housing 22 of the flow control unit 7 and the moveable mount 23.
  • gas can escape from that part of the passage of the flow control unit 7 intermediate of the valve 21 and the flow control unit outlet 20.
  • gas that may be exhaled from the patient can travel through the opening 27 for example towards the surrounding atmosphere through opening 29.
  • the opening 27 may be an annular opening that is created between a substantially disk shaped mount portion and a circular shaped seat 30 of the housing 22 of the flow control unit 7.
  • the one-way valve 21 will assume a closed position as shown in Figure 2 during the exhalation operating phase of the resuscitator.
  • This negative pressure differential may be established by one or more of a combination of the patient breathing out, the retraction of the piston in its cylinder away from the outlet 12 and the movement of the voice coil actuator 24 in a direction establishing the opening 27.
  • the voice coil actuator 24 that primarily establishes the open and closed condition between the opening 27 and that part of the passage of the flow control unit 7 between the flow control unit outlet 20 and the one-way valve 21.
  • the piston In the exhalation operating phase of the resuscitator, the piston is withdrawn by the motor 13 preferably back to a predetermined start position.
  • the piston retracts once it has travelled its full desired stroke during the inhalation operating phase and has delivered the required tidal volume or has timed out while holding the maximum airway pressure during the inhalation period.
  • Control of the position or movement of the voice coil actuator 24 can occur by the controller 3 and is preferably synchronised with movement of the piston.
  • the resuscitator 1 can operate in one or both of a Constant Positive Airway Pressure (CPAP) or a Positive End-Expiratory Pressure (PEEP) mode.
  • CPAP Constant Positive Airway Pressure
  • PEEP Positive End-Expiratory Pressure
  • CPAP Constant Positive Airway Pressure
  • PEEP Positive End-Expiratory Pressure
  • PEEP mode a minimum pressure is maintained towards the end of the expiratory cycle of a patient, to ensure that sufficient pressure is maintained to ensure that the patient's lungs do not collapse.
  • a blower 200 is provided for providing a minimum or background CPAP pressure via a separate dedicated CPAP duct 205 to a CPAP check valve 206, which is a one way valve that allows CPAP pressurised air through from the blower to the patient when the pressure in the patient interface is lower than the CPAP pressure.
  • the one way valves of the pump may be sensitive enough to be opened by the CPAP pressure generated by the blower.
  • the pressure within the pump is lower than CPAP, then the CPAP pressure will enter the pump and thereafter the patient interface to maintain a CPAP pressure in the patient interface.
  • the resuscitator may be provided with a separate conduit in fluid communication with the patient interface.
  • the fluid conduit is provided with a one way valve, preferably at an end closest to the patient, and more preferably at the mask.
  • the one way valve When the pressure in the mask is above CPAP pressure, the one way valve is held closed. When the patient is in their expiratory cycle, pressure will be high enough to open an exhaust valve to allow expiration gases to flow out of the mask. Towards the end of the expiratory cycle, pressure in the mask would drop to ambient pressure, or even lower at the start of the inspiratory cycle. As soon as the pressure drops to below the CPAP pressure, the CPAP pressure will cause the one way valve to open, and maintain pressure within the mask at CPAP pressure.
  • the inspiratory parameters of tidal volume, pressures and respiratory (breath) rates can be controlled against a background minimum CPAP pressure.

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)
  • Percussion Or Vibration Massage (AREA)

Abstract

L'invention concerne un procédé et un appareil de réanimation. L'appareil reçoit une ou plusieurs informations relatives au patient et commande un moteur pour déplacer un piston afin de distribuer un volume courant initial pendant un cycle respiratoire initial, ledit volume courant initial étant inférieur à un volume courant recommandé associé auxdites informations relatives au patient, et il commande le moteur pour déplacer le piston afin d'administrer un volume courant augmenté de manière incrémentielle lors de cycles respiratoires suivants, jusqu'à ce que le volume courant délivré lors d'un cycle respiratoire soit égal au volume courant recommandé.
PCT/IB2016/054939 2015-08-18 2016-08-18 Appareils de réanimation électriques améliorés WO2017029629A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ71112915 2015-08-18
NZ711129 2015-08-18

Publications (1)

Publication Number Publication Date
WO2017029629A1 true WO2017029629A1 (fr) 2017-02-23

Family

ID=58051650

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2016/054939 WO2017029629A1 (fr) 2015-08-18 2016-08-18 Appareils de réanimation électriques améliorés

Country Status (1)

Country Link
WO (1) WO2017029629A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020037513A1 (fr) * 2018-08-21 2020-02-27 深圳迈瑞生物医疗电子股份有限公司 Procédé et dispositif de détection de ventilation, appareil de ventilation, et support d'enregistrement
WO2020225643A1 (fr) * 2019-05-06 2020-11-12 Alcon Inc. Système pour fluides ophtalmiques muni d'un capteur de pression à courant de foucault
WO2021222881A1 (fr) * 2020-05-01 2021-11-04 Groman Inc. Respirateur médical à deux cylindres pneumatiques, système et procédé
WO2021242086A1 (fr) * 2020-05-27 2021-12-02 Université Internationale de RABAT Dispositif pour la respiration artificielle automatique et communiquant : ventilateur mécanique.
EP3943136A1 (fr) * 2020-07-24 2022-01-26 Pratt & Whitney Canada Corp. Ventilateur de patient organe de commande associé
WO2023034611A1 (fr) * 2021-09-02 2023-03-09 Redford Ryan Système de ventilation à soupape améliorée

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6142150A (en) * 1998-03-24 2000-11-07 Nellcor Puritan-Bennett Compliance compensation in volume control ventilator
WO2002020076A2 (fr) * 2000-09-05 2002-03-14 Mallinckrodt, Inc. Regulation adaptative inverse de ventilation basee sur la pression
WO2003105720A2 (fr) * 2002-06-01 2003-12-24 Oded Luria Trousse medicale de secours, pompe respiratoire, et masque facial particulierement utile
WO2008147229A1 (fr) * 2007-05-30 2008-12-04 Gilbert Jacobus Kuypers Améliorations apportées à des appareils de réanimation électriques
US20100078017A1 (en) * 2008-09-30 2010-04-01 Nellcor Puritan Bennett Llc Wireless communications for a breathing assistance system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6142150A (en) * 1998-03-24 2000-11-07 Nellcor Puritan-Bennett Compliance compensation in volume control ventilator
WO2002020076A2 (fr) * 2000-09-05 2002-03-14 Mallinckrodt, Inc. Regulation adaptative inverse de ventilation basee sur la pression
WO2003105720A2 (fr) * 2002-06-01 2003-12-24 Oded Luria Trousse medicale de secours, pompe respiratoire, et masque facial particulierement utile
WO2008147229A1 (fr) * 2007-05-30 2008-12-04 Gilbert Jacobus Kuypers Améliorations apportées à des appareils de réanimation électriques
US20100078017A1 (en) * 2008-09-30 2010-04-01 Nellcor Puritan Bennett Llc Wireless communications for a breathing assistance system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020037513A1 (fr) * 2018-08-21 2020-02-27 深圳迈瑞生物医疗电子股份有限公司 Procédé et dispositif de détection de ventilation, appareil de ventilation, et support d'enregistrement
WO2020225643A1 (fr) * 2019-05-06 2020-11-12 Alcon Inc. Système pour fluides ophtalmiques muni d'un capteur de pression à courant de foucault
WO2021222881A1 (fr) * 2020-05-01 2021-11-04 Groman Inc. Respirateur médical à deux cylindres pneumatiques, système et procédé
WO2021242086A1 (fr) * 2020-05-27 2021-12-02 Université Internationale de RABAT Dispositif pour la respiration artificielle automatique et communiquant : ventilateur mécanique.
EP3943136A1 (fr) * 2020-07-24 2022-01-26 Pratt & Whitney Canada Corp. Ventilateur de patient organe de commande associé
WO2023034611A1 (fr) * 2021-09-02 2023-03-09 Redford Ryan Système de ventilation à soupape améliorée

Similar Documents

Publication Publication Date Title
US11285281B2 (en) Electrically operable resuscitators
WO2017029629A1 (fr) Appareils de réanimation électriques améliorés
US3905362A (en) Volume-rate respirator system and method
EP0283141B1 (fr) Appareil de ventilation du poumon
US5678540A (en) Breathing gas system
CN102727975B (zh) 呼吸气体供应和共享系统及其方法
JP4316138B2 (ja) ピストン換気装置酸素混合
EP0050125B1 (fr) Ventilateur volumique
US6990977B1 (en) Substance delivery apparatus
US11964108B2 (en) Process and device for ventilating a patient
EP2726127B1 (fr) Appareil pour assister le dégagement des voies respiratoires
CN101883603A (zh) 用于监视诸如气管导管的气道装置的设备和方法
US20210338952A1 (en) Two pneumatic cylinder medical ventilator, system and method
US20200360635A1 (en) Medical ventilator system and method for providing respiratory support to a patient
KR20240055807A (ko) 개선된 밸브를 포함하는 인공 호흡기 시스템
WO2021203189A1 (fr) Ventilateur en usi portable à piston
US20220193352A1 (en) Electrically operable resuscitators
WO2015138924A1 (fr) Dispositif pour l'émulation d'une toux chez des patients ventilés
CN117531075A (zh) 通气设备及风箱装置的通气控制方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16836730

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WPC Withdrawal of priority claims after completion of the technical preparations for international publication

Ref document number: 711129

Country of ref document: NZ

Date of ref document: 20180215

Free format text: WITHDRAWN AFTER TECHNICAL PREPARATION FINISHED

122 Ep: pct application non-entry in european phase

Ref document number: 16836730

Country of ref document: EP

Kind code of ref document: A1