Gas Supply Means Responsive To Breathing Patents (Class 128/204.26)
  • Patent number: 10441828
    Abstract: A powered air purifying respirator (PAPR) for delivering a forced flow of filtered air to a wearer is disclosed.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: October 15, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Desmond T. Curran, Andrew Murphy, Garry J. Walker, Terence M. Sayers, Christopher P. Henderson, Bengt Kallman
  • Patent number: 10413695
    Abstract: A nasal cannula assembly includes a breathing gas supply lumen assembly splitting into a first inspiratory gas lumen and a second inspiratory gas lumen. An inspiratory gas nasal end portion is in fluid communication with the first inspiratory gas lumen and a second inspiratory gas lumen. The inspiratory gas nasal end portion has a pair of nasal prongs extending outwardly therefrom. An expiratory gas assembly splits into a first expiratory gas lumen and a second expiratory gas lumen. An expiratory gas nasal end portion is in fluid communication with the first expiratory gas lumen and a second expiratory gas lumen. A passage is disposed across the inspiratory nasal end portion from the pair of nasal prongs. The passage provides fluid communication between the inspiratory nasal end portion and the expiratory nasal end portion.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: September 17, 2019
    Inventor: Robert Tero
  • Patent number: 10307561
    Abstract: A vent arrangement for a respiratory pressure therapy device may include one or a plurality of vents configured with a variable aperture for communicating a flow of breathable gas. The vent arrangement may be configured with a cross section profile exposed to the flow of breathable gas communicating through the vent that does not change as the aperture size changes. A vent arrangement may include a plurality of the vents and the aperture size of each vent may be controlled independently or together, and may be controlled according to one or more input signals from one or more sensors. Examples of suitable input signals include flow, pressure, noise, accelerometer outputs, orientation of a patient or presence of any obstructions. A patient interface or an air circuit may include the vent arrangement, or the vent arrangement may be configured to connect with a patient interface or an air circuit.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: June 4, 2019
    Assignee: ResMed Limited
    Inventor: Roger Mervyn Lloyd Foote
  • Patent number: 10300312
    Abstract: Regulator assemblies for breathing masks of aircraft crewmembers are described, with such an assembly including a mode selection knob mounted on a support. The knob is movable between at least two positions, allowing an associated regulator to operate in at least two modes of supplying breathing gas to a crewmember. One or more protrusions of the knob, when contacted by fingers of the crewmember, may bias the knob toward a particular one of the at least two positions.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: May 28, 2019
    Assignee: Zodiac Aerotechnics
    Inventor: Jean-Philippe Sibuet
  • Patent number: 10226591
    Abstract: The present invention pertains to a system, method, and device for treating sleep disorders. The present invention is particularly useful in the delivery of carbon dioxide (CO2) to a subject and in the treatment of sleep apnea. Furthermore, integration of components with various sensors and apparatuses associated therewith and attached thereto preferably complete a rebreathing circuit in the present invention. In various embodiments of the present invention where the above components are integrated as a rebreathing circuit, a subject is both the source and recipient of a controlled concentration of carbon dioxide. In such embodiments, treatment of sleep disorders becomes much more efficient and effective.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: March 12, 2019
    Assignee: Cleveland Medical Devices Inc.
    Inventor: Matthew D. Tarler
  • Patent number: 10137318
    Abstract: A demand regulator (1) for aircraft breathing device (100) comprising: —a respiratory chamber (9) supplied with respiratory gas comprising breathable gas and dilution gas, —a breathable gas supply line (12, 13), —a dilution gas supply line (14, 15), —a first adjusting device (50, 60) of non-electrical type adjusting the pressure in the respiratory chamber (9), and —a second adjusting device (22, 24, 40, 41-49) adjusting the rate of dilution gas in the respiratory gas supplied to the respiratory chamber (9), the second adjusting device comprising a dilution valve (24) disposed in the dilution gas supply line (14, 15), a sensor (41-49) and an electrical control unit (40) adjusting the rate of dilution gas in the respiratory gas by controlling the dilution valve (24).
    Type: Grant
    Filed: February 21, 2011
    Date of Patent: November 27, 2018
    Assignee: Zodiac Aerotechnics
    Inventor: Matthieu Fromage
  • Patent number: 10085686
    Abstract: An apparatus for evaluating the tongue strength and coordination of a subject includes an intermediate device such as a lever which is pivotably attached to a coupling device and extends into a cavity of a nipple element. The lever is detached from the nipple and pivotable in response to deformation of the nipple element by a tongue force exerted on the nipple element by a subject during a suck-swallow-breathe sequence. The coupling device includes a sensing device to wirelessly transmit sensor outputs to a mobile device paired to the sensing device. The sensing device includes at least one sealed chamber defined by a membrane and a sensor. In one example, a first membrane and sensor senses pressure change in a fluid in the apparatus, and a second membrane and sensor is actuated by the intermediate device to sense deformation of the nipple element. A method using the apparatus is provided.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: October 2, 2018
    Assignee: NFANT Labs, LLC
    Inventors: Thomas J. Cunningham, Louis F. Malice, Jr., Gilson J. Capilouto
  • Patent number: 9919121
    Abstract: The ventilation interface for sleep apnea therapy interfaces a ventilation device to the patient's airways. The ventilation interface includes a pair of nasal inserts made from flexible, resilient silicone which are oval shaped in cross-section and slightly tapered from a base proximal the ventilation supply to the distal tip end. A bead flange is disposed about the exterior of each insert at the distal end of the insert. A bleed port for release of exhaled air is defined through a conical vent projecting normally to the path of the incoming air flow, and continues through a nipple extending to the exterior of the air conduit. In one embodiment, a pair of nasal inserts are integral with a nasal cannula body, with bleed ports axially aligned with each insert. In another embodiment, each insert is independently connected to a separate, thin-walled, flexible supply line.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: March 20, 2018
    Assignee: InnoMed Healthscience, Inc.
    Inventor: Thomas Wood
  • Patent number: 9864258
    Abstract: A mounting system allows an action camera system or other device to be removably attached to a SCUBA demand regulator. A flexible ring encircles an outer surface of the regulator and is cinched thereabout, the shape of the ring corresponding to the shape of the outer surface of the regulator. A riser, which may be one or more prongs, rises upwardly from the ring and has a mount plate on a distal end thereof. The mount plate adhesively receives a flat adhesive plate of a desired device such as the action camera system.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: January 9, 2018
    Inventor: Michael W McVicker
  • Patent number: 9733190
    Abstract: A system and method for determining a remaining processing capacity of a scrubber having a flow path and a processing material disposed along the flow path. A device may comprise a plurality of optical sensors disposed within the processing material and arranged along the flow path, a light source, and a processor for determining the capacity according to signals received from the optical sensor. The device may be used to illuminate processing material adjacent to each optical sensor using the light source, measure a light value reflected by the processing material at each optical sensor, and determine the remaining processing capacity of the scrubber, using the processor, based on the measured light value. Devices may comprise a memory, such as a non-volatile memory to allow multiple uses of a scrubber without reloading with fresh processing material.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: August 15, 2017
    Assignee: The Research Foundation for The State University of New York
    Inventors: Clas Erik Gunnar Lundgren, Ronald M. Okupski
  • Patent number: 9713690
    Abstract: A controller or processor for a respiratory pressure treatment device determines an estimate of patient respiratory flow based on a measure of pressure associated with flow generated by a flow generator and a measure of frequency of the flow generator, such as a rotational velocity of a servo-controlled blower motor. The estimate can be made without data from a flow sensor. The measure of frequency may be converted to an expected pressure based on characteristics of the flow generator and subtracted from the measured pressure to determine the flow estimate. The flow estimate can be implemented in the provision of respiratory pressure treatment with the flow generator. For example, the flow estimate may be utilized to trigger expiratory pressure relief during a patient's expiration as detected with the estimated flow signal.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: July 25, 2017
    Assignee: ResMed Limited
    Inventors: Chinmayee Somaiya, Nicholas Ming Yun Yip, John David Oates, Adrian Barnes, Christopher Kingsley Blunsden
  • Patent number: 9687192
    Abstract: An apparatus for evaluating the tongue strength and coordination of a subject includes an intermediate device such as a lever which is pivotably attached to a coupling device and extends into a cavity of a nipple element. The lever is detached from the nipple and pivotable in response to deformation of the nipple element by a tongue force exerted on the nipple element by a subject during a suck-swallow-breathe sequence. The coupling device includes a sensing device to wirelessly transmit sensor outputs to a mobile device paired to the sensing device. The sensing device includes at least one sealed chamber defined by a membrane and a sensor. In one example, a first membrane and sensor senses pressure change in a fluid in the apparatus, and a second membrane and sensor is actuated by the intermediate device to sense deformation of the nipple element. A method using the apparatus is provided.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: June 27, 2017
    Assignee: NFANT Labs, LLC
    Inventors: Thomas J. Cunningham, Louis F. Malice, Jr., Gilson J. Capilouto
  • Patent number: 9687177
    Abstract: Automated devices provide methodologies for determining sleep conditions, which may be in conjunction with treatment of sleep disordered breathing by a pressure treatment apparatus such as a continuous positive airway pressure device. Based on a measure of respiratory airflow, respiratory characteristics are extracted to detect arousal conditions, sleep stability, sleep states and/or perform sleep quality assessments. The methodologies may be implemented for data analysis by a specific purpose computer, a monitoring device that measures a respiratory airflow and/or a respiratory treatment apparatus that provides a respiratory treatment regime based on the detected conditions.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: June 27, 2017
    Assignee: ResMed Limited
    Inventors: Dinesh Ramanan, Jeffrey Peter Armitstead
  • Patent number: 9526853
    Abstract: A ventilation system having a processor in communication with a mechanical ventilator and a user interface for allowing an individual to operate the system with little or no respiratory care expertise until a respiratory care practitioner can take over operation is disclosed. The ventilation system further includes a function that permits seamless transition between modes of operation.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: December 27, 2016
    Assignee: Allied Healthcare Products, Inc.
    Inventors: Earl Refsland, Kevin Kroupa
  • Patent number: 9498657
    Abstract: A diaphragm for a lung demand valve, including a CBRN layer which is sufficiently resistant to the permeation of at least some CBRN agents and a resilient layer which is resiliently deformable. The CBRN layer is arranged to restrict the permeation of at least some CBRN agents through the diaphragm, and the resilient layer is arranged to allow the diaphragm to be resiliently deformed.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: November 22, 2016
    Assignee: Draeger Safety UK Limited
    Inventor: Paul Townsend
  • Patent number: 9427537
    Abstract: A pneumatic single-lumen medical gas conserver combines the advantages of typical single-lumen and dual-lumen conservers. In particular, a pneumatic single-lumen conserver can provide a rapid response to patient inhalations without the need for a more expensive dual-lumen cannula hose. In addition, after delivering oxygen the conserver has a specific pneumatically-implemented delay period before being able to detect the next inhalation to inhibit “double pulse” deliveries. In addition to a conserving or pulse flow mode, the conserver can provide a user-selectable gas flow at a continuous or constant flow mode.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: August 30, 2016
    Assignee: Inovo, Inc.
    Inventors: LeNoir E. Zaiser, Kevin W. Confoy
  • Patent number: 9352115
    Abstract: A system for delivering gas to a patient. The system includes a gas control unit, a breathing circuit, a control switch, and a patient interface. The gas control unit has a main gas outlet. The breathing circuit has a main gas line having a first end. The first end of the main gas line is coupled to the main gas outlet. The control switch may be a pneumatic switch, in which case the breathing circuit further has a pilot control line for pneumatically controlling the gas control unit to deliver gas to the main gas line via the main gas outlet. The control switch may be an electrical switch, in which case the breathing circuit may use electrical control of the gas delivery or electrical and pneumatic control of the gas delivery. Other embodiment of the gas control unit may include a continuous positive airway pressure branch.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: May 31, 2016
    Assignee: Capnia, Inc.
    Inventor: Mark DeStefano
  • Patent number: 9351929
    Abstract: An aqueous or powder composition includes anti-gram-negative antibiotic or salt thereof being present at an amount ranging from about 100 mg/ml to about 200 mg/ml. Another aqueous or powder composition includes anti-gram-positive antibiotic or salt thereof being present at a concentration ranging from about 0.6 to about 0.9 of the water solubility limit, at 25° C. and 1.0 atmosphere, of the anti-gram-positive antibiotic or salt thereof. Other embodiments include unit doses, kits, and methods.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: May 31, 2016
    Assignee: Bayer Intellectual Property GMBH
    Inventors: Chatan Charan, Sarvajna Dwivedi
  • Patent number: 9351930
    Abstract: An aqueous or powder composition includes anti-gram-negative antibiotic or salt thereof being present at an amount ranging from about 100 mg/ml to about 200 mg/ml. Another aqueous or powder composition includes anti-gram-positive antibiotic or salt thereof being present at a concentration ranging from about 0.6 to about 0.9 of the water solubility limit, at 25° C. and 1.0 atmosphere, of the anti-gram-positive antibiotic or salt thereof. Other embodiments include unit doses, kits, and methods.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: May 31, 2016
    Assignee: Bayer Intellectual Property GMBH
    Inventors: Chatan Charan, Sarvajna Dwivedi
  • Patent number: 9272106
    Abstract: Respiratory assistance is provided to a subject in the form of a pressurized flow of breathable gas. The pressure of the gas is eased during expiration and increased during inspiration. Changes in pressure are triggered and/or cycled based on the monitoring of tidal volume. Volume thresholds that cause triggering and/or cycling are adjusted based on an observed or measured breath rate.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: March 1, 2016
    Assignee: Koninklijke Philips N.V.
    Inventors: Sara Marie Sibenaller, Leonardo Alberto Baloa Welzien, Manuel Laura Lapoint
  • Patent number: 9254367
    Abstract: In an exemplary embodiment, a breath actuated inhaler (BAI) actuator may include a loading element capable of being loaded with an actuation force and a breath actuated trigger mechanism arranged to counteract the actuation force of the loading element and to fire the actuator by releasing the actuation force of the loading element in response to an inhalation breath. An actuation locking device may be moveable between a locked position wherein it relieves the actuation force from the trigger mechanism setting the trigger mechanism in a neutral position, and an armed position wherein the trigger mechanism is set in an armed position.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: February 9, 2016
    Assignee: ASTRAZENECA AB
    Inventors: Nicholas Bowman, Jörgen Fruensgaard, Jörgen Funder Rasmussen, Henrik Hougaard Vilstrup, Keld Sloth Christensen
  • Patent number: 9010327
    Abstract: The present invention relates to a solution for controlling the pressure/flow of breathing gas to a mechanical ventilator (4) by using an energy of breathing analysis and further to provide a pressure relief during exhalation and a trigger determination when to start the pressure relief using energy content of breathing in analysis for determining a pressure curve form during at least a portion of the expiration phase.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: April 21, 2015
    Assignee: Breas Medical AB
    Inventor: Mikael Tiedje
  • Patent number: 8997741
    Abstract: A respiration system feeds an anesthetic gas having, a density ?gas, with a Y-piece for connection to a patient, with a respiration circuit having an inspiration branch and an expiration branch, which extend away from the Y-piece. A first supply line from a branch in the expiration branch leads to an anesthetic gas discharge valve and a second supply line from the branch leads to a reservoir. A too high pressure, opposing expiration, cannot build up in the expiration branch and losses of anesthetic gas are kept to a minimum. A prestressing device exerts a prestressing force onto the valve body of the anesthetic gas discharge valve against the effect of gravity. The mass mvalve and the prestressing force determine a threshold pressure in the anesthetic gas discharge line that results in an opening of the anesthetic gas discharge valve.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: April 7, 2015
    Assignee: Dräger Medical GmbH
    Inventors: Ralf Heesch, Henryk Schnaars
  • Patent number: 8991393
    Abstract: The present invention is a breathing improvement monitor that continuously measures involuntary breathing. The monitor is a sensor apparatus that is attached to a patient's mask which is connected to the monitoring apparatus. The sensor may be reusable and attachable and detachable to a mask or it may be an integral part of a breathing mask. The sensor technology may be any type sufficient in the art, including but not limited to solid state sensors, transducers, electromagnetic microturbines and the like. Since the mask does not have to be removed and the sensor provides constant signal to the monitoring apparatus, a real time status of a patient's involuntary breathing capability may be determined for a doctor's consideration.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: March 31, 2015
    Inventor: Steven D Jensen
  • Patent number: 8985110
    Abstract: A diaphragm for a lung demand valve, including a chemical, biological, radiological and/or nuclear (CBRN) layer which is sufficiently resistant to the permeation of at least some CBRN agents and a resilient layer which is resiliently deformable. The CRBN layer is arranged to restrict the permeation of at least some CBRN agents through the diaphragm, and the resilient layer is arranged to allow the diaphragm to be resiliently deformed.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: March 24, 2015
    Assignee: Draeger Safety UK Limited
    Inventor: Paul Townsend
  • Patent number: 8955514
    Abstract: A respiration system includes a regulator including an inlet for connection to a source of pressurized gas and an outlet for delivery of the gas to the user, and a respiration facepiece for use in connection with the regulator including an interface removably attachable to the regulator, at least one seal system adapted to form a sealing engagement with the face of a user, an inhalation port in fluid connection with the regulator interface and with the facepiece interior, an inhalation check valve in fluid connection between the inhalation port and the facepiece interior; an exhalation port in fluid connection with the facepiece; an exhalation check valve in fluid connection with the exhalation port; and an ambient port separate from the inhalation port and from the exhalation port, which is in fluid connection with the facepiece interior without an intervening check valve.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: February 17, 2015
    Assignee: MSA Technology, LLC.
    Inventors: Carsten Leuschner, Klaus Schmidtke, Michael Horn, Christopher L. Prete, Marco Tekelenburg
  • Patent number: 8950399
    Abstract: A method is provided for automatically controlling a ventilation or breathing system with a ventilation unit (7), which is controlled by a control unit (5), in order to deliver an assist pressure preset by the control unit, wherein the current values of the tidal volume flow Flow(t) and those of the volume V(t) are detected in the control unit. The control unit (5) may carry out a proportionally assisting ventilation method (PAV: Proportional Assist Ventilation) by a factor for a degree of compensation (PPSp) being selected by the control unit and by the parameters for the volume assist (VA) and the flow assist (FA) being determined by: VA=PPSp·?E FA=PPSp·?R, wherein ?E is the deviation of a measured or assumed elastance (Emeasured) of the patient from an ideal elastance (Eideal) and ?R is the deviation of a measured or assumed resistance (Rmeasured) of the patient from an ideal resistance (Rideal).
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: February 10, 2015
    Assignee: Dräger Medical GmbH
    Inventors: Thomas Handzsuj, Ernst Schubert, Frank Ralfs, Marcus Eger
  • Patent number: 8899232
    Abstract: A low-cost CPAP apparatus in which, upon detection of the transition from inhalation to exhalation, the blower motor is de-energized to allow it to freewheel. When the pressure in the patient mask (or whatever interface is utilized) reaches a minimum pressure level during exhalation, the motor is re-energized and its speed is controlled so to maintain the pressure at a level suitable for exhalation. Upon detection of the transition from exhalation to inhalation, the motor speed is increased to provide higher pressures in the patient mask suitable for inhalation.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: December 2, 2014
    Assignee: Resmed Limited
    Inventors: Steven Paul Farrugia, Matthew Alder, Andrew Mikael Price, Ron Richard
  • Patent number: 8857431
    Abstract: Embodiments of the invention provide a breathing mask for aircraft crewmember. The breathing mask includes an on-demand regulator with an inlet connected to a source of breathing gas and an outlet to exhaust the breathing gas. The outlet has an aperture controlled by a movable valve having an open position when the crewmember breathes out and a closed position when the crewmember breathes in. The breathing mask also has a latch member operable by a crewmember to latch the valve in the open position, the latch member including an unlocking member to release the valve when the cabin pressure is below a predetermined value.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: October 14, 2014
    Assignee: Zodiac Aerotechnics
    Inventors: Vincent Gillotin, Michel Malfroy, Remy Schoettel, Patrick Maire
  • Patent number: 8844527
    Abstract: Methods, systems and/or apparatus for slowing a patient's breathing by using positive pressure therapy. In certain embodiments, a current interim breathing rate target is set, and periodically the magnitude of a variable pressure waveform that is scaled to the current interim breathing rate target is increased if the patient's breathing rate is greater than the interim breathing rate target in order to lengthen the patient's breath duration. The magnitude of the pressure increase may be a function of the difference between the interim breathing rate target and the patient's breathing rate. The interim breathing rate target may be periodically reduced in response to the patient's breathing rate slowing down toward the current interim breathing rate target. The variable pressure waveform cycles from an inhalation phase to an exhalation phase when the patient airflow decreases to a cycle threshold, the cycle threshold being a function of flow versus time within a breath and generally increasing with time.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: September 30, 2014
    Assignee: ResMed Limited
    Inventors: Dion Charles Chewe Martin, David John Bassin
  • Patent number: 8844525
    Abstract: Devices and systems provide methods of detecting a heart failure condition of a patient that may be based on one or more respiratory parameters of a patient. In an example embodiment, a monitoring device determines one or more heart failure condition indicators based on a measure of the patient respiratory airflow and/or a measure of treatment pressure. Respiratory parameters such as respiration rate, hypopneas, apneas, Cheyne-Stokes breathing patterns or apnea-hypopnea counts may be compared to thresholds that are selected to represent a change in the condition of a heart failure patient such as an onset of a decompensation event. Results of the comparisons may trigger a pressure treatment change and/or one or more warnings or messages to notify a patient or physician of a pending change to the patient's heart failure condition so that the patient may more immediately seek medical attention to treat the heart failure condition.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: September 30, 2014
    Assignee: ResMed Limited
    Inventors: Klaus Henry Schindhelm, Ian Wilcox, Rachel Ann Coxon
  • Patent number: 8844526
    Abstract: This disclosure describes systems and methods for providing novel back-up ventilation that allows the patient to trigger or initiate the delivery of breath. Further, this disclosure describes systems and methods for triggering ventilation when base flow is unknown or undeterminable by the ventilator.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: September 30, 2014
    Assignee: Covidien LP
    Inventors: Mehdi M. Jafari, Rhomere S. Jimenez, Jeffrey K. Aviano
  • Patent number: 8826906
    Abstract: A ventilator that delivers air at different pressures to a patient during inspiratory and expiratory cycles of breathing and that cycles from inspiratory to expiratory operation when the patient's respiratory flow passes a threshold level. The threshold generally increases from the beginning of inspiration to the end of inspiration. The increase can be linear over all or only a portion of the inspiratory cycle, and the threshold can be adjusted so that cycling is prevented during the initial portion of an inspiratory cycle. The minimum and maximum levels may both be functions of peak flow and the threshold may increase as a function of elapsed inspiratory time. The rate at which the threshold increases from a minimum level to a maximum level may be adjustable for individual patient needs and may be determined from previous breaths.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: September 9, 2014
    Assignee: ResMed Limited
    Inventor: David John Bassin
  • Patent number: 8800559
    Abstract: The disclosure relates to an Breath actuated inhaler (BAI) actuator, comprising: a loading element capable of being loaded with an actuation force, a breath actuated trigger mechanism arranged to counteract the actuation force of the loading element, and to fire the actuator by releasing the actuation force of the loading element in response to an inhalation breath, and actuation locking device moveable between a locked position wherein it relieves the actuation force from the trigger mechanism setting the trigger mechanism in a neutral position, and an armed position wherein the trigger mechanism is set in an armed position.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: August 12, 2014
    Assignee: AstraZeneca AB
    Inventors: Nicholas Bowman, Jörgen Fruensgaard, Jörgen Funder Rasmussen, Henrik Hougaard Vilstrup, Keld Sloth Christensen
  • Patent number: 8794237
    Abstract: An oxygen concentrator may rely on a pressure swing adsorption process to produce an oxygen enriched gas stream from canisters filled with granules capable of separation of oxygen from an air stream. The adsorption process uses a cyclical pressurization and venting of the canisters to generate an oxygen enriched gas stream. The oxygen concentrator system may include one or more flow restrictors to allow controlled release of oxygen enriched gas between the canisters.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: August 5, 2014
    Assignee: Inova Labs, Inc.
    Inventors: William R. Wilkinson, Allan Sten Westersten, H. David Shockley, Jr.
  • Patent number: 8794236
    Abstract: A method of using CPAP equipment to sense cardiogenic oscillations in a patient's airflow, and to monitor and treat the patient's cardiac condition. The apparatus diagnoses cardiac morbidity conditions, such as the existence of arrhythmias or other cardiac abnormalities, and influences and optimizes cardiac stroke volume. The apparatus further monitors pulse-transit time, changes in the heart pre-ejection period, and the duration of the cardiac cycle.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: August 5, 2014
    Assignee: ResMed Limited
    Inventors: Chee Keong Phuah, Steven Paul Farrugia, Dion Charles Chewe Martin, Christine Wei Chih Chan
  • Patent number: 8739791
    Abstract: A re-configurable pressure regulator for breathing apparatus having a valve housing with a connector at a first and a second end. A pressurized source of breathable gas is connected to either end and a removable blanking plug is connected to the other end of the housing. A double acting valve within the housing selectively opens a first or second opening in the housing, depending on which end the source of breathable gas is connected, which opening forms the inlet and outlet from the housing.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: June 3, 2014
    Assignee: Clipper Data Limited
    Inventor: Alan Clarke
  • Patent number: 8733344
    Abstract: A mouth piece supply valve control system which may be used in connection with mouth piece supply valve with a rebreather. An exemplary mouth piece supply valve control system may include a sensor operative to produce a sensor signal upon sensing a condition, a computer connected to the sensor that may produce a computer signal associated with sensor signal, a logic device operatively connected to the computer for receiving the computer signal, and an automatic actuator operatively connected to the logic device. The automatic actuator may be operatively coupled to a mouth piece supply valve that may be selectable between a first mode and a second mode and the automatic actuator may shift the mouth piece supply valve from the second mode to the first mode upon receipt of a logic device signal from the logic device.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: May 27, 2014
    Inventors: Jeffrey Evan Bozanic, Forrest P. Gauthier
  • Patent number: 8714156
    Abstract: The present invention relates generally to the field of ventilators, and, more specifically, to a ventilator system that addresses respiratory distress due to the onset of an epidemic or pandemic disease state. In particular, the present invention is a ventilator system that can be manufactured quickly with minimal skill requirements and employed rapidly in response to epidemic respiratory disease conditions.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: May 6, 2014
    Assignee: Spacelabs Healthcare, LLC
    Inventors: Richard Henry Cooke, Nicholas Ong, Roy Hays
  • Patent number: 8714152
    Abstract: A method of operating a ventilator that includes steps of (a) providing a specified ventilation therapy to a patient through a ventilator according to a specification; (b) determining and storing a backup parameter relating to the operation of the ventilator or the breathing of the patient during the step of providing the specified ventilation therapy; (c) determining that an alarm condition exists that indicates a problem with the ventilator that would prevent the ventilator from providing the specified ventilation therapy to the patient according to the specification; and (d) responsive to determining that the alarm condition exists, providing backup ventilation therapy to the patient through the ventilator that is based at least partially on the stored backup parameter. Also, a ventilator that is adapted to perform the method just described.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: May 6, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: William A. Truschel, Andrew L. Shissler, Winslow K. Duff, Mark C. McDermott, Michael H. Kissel
  • Patent number: 8701664
    Abstract: Apparatus (1) for relieving dyspnoea in an ambulatory exercising subject comprises a housing (3) to be worn on the subject, and within which a variable speed air blower motor (5) is located for delivering an air supply to the subject through a mouthpiece (10) at a pressure similar to average intrinsic positive end-expiratory pressure of the subject. A pressure transducer (25) in the mouthpiece (10) monitors the pressure during breathing cycles of the subject, and a control circuit (22) determines the average intrinsic positive end-expiratory pressure of the subject over five breathing cycles. The control circuit (22) operates the air blower motor (5) for delivering the air supply to the subject at a pressure similar to the determined average intrinsic positive end-expiratory pressure.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: April 22, 2014
    Assignee: Caradyne (R&D) Limited
    Inventor: John O'dea
  • Patent number: 8695593
    Abstract: A system for mechanical ventilation treatment is described. In one embodiment the system provides advice on treatment and/or weaning of patients from mechanical ventilation based on the patient's conditions. In another embodiment the system includes apparatus to monitor and analyze the patient's data and data from the mechanical ventilator and controls the ventilator automatically.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: April 15, 2014
    Inventor: Fleur T. Tehrani
  • Patent number: 8695597
    Abstract: A process for operating a respirator and/or anesthesia device in the APRV mode with the % PEF criterion which includes a detection of a spontaneous expiratory effort by the patient and initiation of a pressure release phase when the detected spontaneous expiratory effort by the patient falls within a predetermined trigger window (Tfreg). A device is provided that is operated correspondingly.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: April 15, 2014
    Assignee: Dräger Medical GmbH
    Inventor: Tobias Glaw
  • Patent number: 8689790
    Abstract: An emergency oxygen supply system for use on aircraft in the event of a loss in cabin pressure is configured for delivering allotments of oxygen and timing the delivery such allotments to each passenger so as maximize the efficiency of the transfer of such oxygen into the passenger's bloodstream. The delivery of each allotment is selected so that the entire allotment is available for inhalation into the region of the lung most efficient at oxygen transfer while the volume of the allotment is selected to substantially coincide with the volume of such region of the lung.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: April 8, 2014
    Assignee: BE Aerospace, Inc.
    Inventor: James C. Cannon
  • Patent number: 8678000
    Abstract: In aspects, a portable breathing apparatus is provided that includes a face mask having a breathing valve, a blower for the supply of breathing air to the breathing valve via a supply line, a filter device for cleaning of the breathing air from the blower, and a compressed-air reservoir for alternative supply of breathing air to the breathing valve. Additionally, the breathing valve is a demand valve configured to supply pressure equal to or above an ambient pressure, a check-valve is arranged on the upstream side of the blower, and the compressed-air reservoir is provided with a pressure control valve for establishing an overpressure above the ambient pressure in the entire breathing system, wherein the pressure control valve is upstream of the breathing valve and downstream of the check valve, so that gas or liquid cannot penetrate into the system when breathing gas is supplied from the compressed-air reservoir.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: March 25, 2014
    Assignee: Ottestad Breathing Systems AS
    Inventor: Nils T. Ottestad
  • Patent number: 8677997
    Abstract: A method and CPAP apparatus characterizes different mask systems, e.g., masks and hoses. The CPAP apparatus can be calibrated for different mask systems and hoses by including sensors that measure flow and pressure at a flow generator of the apparatus. When the generator is fitted to a new mask system, or any changes are made to an existing one, a method calibrates the generator for the mask system. The method includes determining air flow characteristics using flow measurements from a first test period when flow through the mask system is open, measuring or estimating pressure in the mask system during a second test period when flow through the mask system is blocked and determining air flow characteristics of the diffuser of the mask system using the air flow characteristics of the air delivery hose determined during the first period and the pressure measurements made during the second period.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: March 25, 2014
    Assignee: ResMed Limited
    Inventors: Gerard Michael O'Connor, John David Oates, Nicola Frances Wickham
  • Publication number: 20140076321
    Abstract: A gas valve is arranged for controlling the flow of medical gas for oxygen therapy in case of spontaneous breathing. An embodiment of the gas valve contains a connection component to connect the gas valve to an external supply such as for example an external supply network for medical gases at a pressure lower than 50 bars. The gas valve may contain a regulating system configured to select and supply a pulsating or continuous flow of medical gas in which the regulating system contains a flow rate regulator to controllable set the flow rate of the continuous flow.
    Type: Application
    Filed: May 10, 2012
    Publication date: March 20, 2014
    Inventors: Philip Hendrickx, Dirk Borgonjon
  • Patent number: 8646447
    Abstract: In certain example embodiments, an air delivery system includes a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment and a pulse oximeter. In certain example embodiments, the pulse oximeter is configured to determine, for example, a measure of patient effort during a treatment period and provide a patient effort signal for input to control operation of the flow generator. Oximeter plethysmogram data may be used, for example, to determine estimated breath phase; sleep structure information; autonomic improvement in response to therapy; information relating to relative breathing effort, breathing frequency, and/or breathing phase; vasoconstrictive response, etc. Such data may be useful in diagnostic systems.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: February 11, 2014
    Assignee: ResMed Limited
    Inventors: Dion Charles Chewe Martin, John David Oates
  • Patent number: 8649510
    Abstract: A device for confirming compliance with usage of a breathing gas delivery system that includes at least one sensor for monitoring operating data disposed within the breathing gas delivery system and a device for encoding the monitored operating data and displaying the encoded operating data for reporting to another location.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: February 11, 2014
    Assignee: DeVilbiss Healthcare, LLC
    Inventors: Michael B. Knepper, Stephen F. Krepelka
  • Patent number: 8640701
    Abstract: A system and method of providing bi-level CPAP therapy is provided that incorporates an infrared carbon-dioxide sensor to determine whether a patient is inhaling or exhaling. Patient exhalation causes the infrared light to be absorbed, while patient inhalation reduces the presence of carbon-dioxide causes little or no absorption of carbon-dioxide. The level of carbon-dioxide in an associated patient breathing interface is monitored for thresholds that trigger higher CPAP pressure upon inhalation and lower CPAP pressure upon exhalation.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: February 4, 2014
    Assignee: Invacare Corporation
    Inventor: Joseph B. Richey, II