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Electric control means

Subclass of:

128 - Surgery

128200240 - RESPIRATORY METHOD OR DEVICE

128204180 - Means for supplying respiratory gas under positive pressure

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
128204230 Means for sensing condition of user's body 293
128204220 Means for sensing partial pressure, or amount, of component in gas mixture 48
Entries
DocumentTitleDate
20130042868HIGH FREQUENCY OSCILLATION VENTILATOR CONTROL SYSTEM - A high frequency oscillation ventilator including an oscillating piston control system and a mean airway pressure control system. The oscillating piston control system and the mean airway pressure control system are closed-loop control systems. The oscillating piston control system is independent of the mean airway pressure control system.02-21-2013
20130042869Breathing Assistance System with Multiple Pressure Sensors - A method for managing pressure in a breathing assistance system configured to provide breathing assistance to a patient via a patient connection system is provided. The method may include receiving one or more first pressure sensor signals from a first pressure sensor, and analyzing the one or more first pressure sensor signals. Based at least on the analysis of the one or more first pressure sensor signals, either the first pressure sensor or the second pressure sensor may be selected for use in controlling the breathing assistance provided to the patient, and the breathing assistance provided to the patient may be controlled based at least on signals from the selected pressure sensor.02-21-2013
20080264418Y-PIECE FOR MEDICAL RESPIRATION SYSTEMS - A Y-piece (10-30-2008
20100078025Breathing Apparatus with Sensor - A self-contained breathing apparatus or a respirator can be equipped with a sensor of ambient airborne conditions. A display unit can be carried by a face mask for the apparatus or respirator. Responsive to output signals from the sensor, the display unit can present an air quality indicator, or a breathability indicator to a user of the apparatus or respirator.04-01-2010
20120174925System and Method for Providing Mechanical Ventilation Support to a Patient - A system for providing mechanical ventilation support to a patient and includes a mechanical ventilator. A breathing circuit is pneumatically connected between the mechanical ventilator and a patient connection. An inspiratory check valve is disposed within an inspiratory limb of the breathing circuit. A fresh gas manifold provides fresh gas to the breathing circuit for delivery to the patient. A fresh gas valve is disposed between the fresh gas manifold and the breathing circuit. The fresh gas valve is operable between a first position which directs fresh gas upstream of the inspiratory check valve and a second position that directs fresh gas downstream of the inspiratory check valve. A digital signal processor operates the fresh gas valve selectively between the first position and the second position. A method of ventilating a patient includes introducing a flow of fresh gas into an inspiratory limb of the breathing circuit. A ventilatory support value is sensed with at least one sensor disposed within the breathing circuit. An operational condition of the breathing circuit is identified with a digital signal processor. A fresh gas valve is operated with the digital processor between a first position that directs fresh gas to the inspiratory limb upstream from the inspiratory check valve and a second position that directs the fresh gas downstream from the inspiratory check valve.07-12-2012
20130032149METHOD AND SYSTEM FOR VISUALIZING MECHANICAL VENTILATION INFORMATION - A medical system having a ventilator is provided. The medical system includes a memory for storing one or more patient and ventilation parameters. A processor is programmed to organize the one or more patient parameters into at least one of past patient and ventilation parameters, present patient and ventilation parameters, or future patient and ventilation parameters. A viewer displays at least one of the past patient or ventilation parameters, the present patient or ventilation parameters, or the future patient or ventilation parameters. The past patient and ventilation parameters, the present patient and ventilation parameters, and the future patient and ventilation parameters are selectable on the viewer.02-07-2013
20130037027AIR PURIFIER APPARATUS - The invention relates to a modular, portable, air purifier and mask device capable of supplying filtered or otherwise conditioned airflow to an individual. More specifically, the present invention provides a modular air purification system that allows for the selection of multiple types of air treatment modules, power modules and mask devices. Through selective combination of a variety of modules, a desired air quality and condition is achieved.02-14-2013
20100108064SYSTEMS AND/OR METHODS FOR GUIDING TRANSITIONS BETWEEN THERAPY MODES IN CONNECTION WITH TREATMENT AND/OR DIAGNOSIS OF SLEEP-DISORDERED BREATHING - In certain example embodiments, a system and/or method of guiding transitions between therapy modes in connection with the treatment and/or diagnosis of a patient for a respiratory disorder is/are provided. Respiratory disorder treatment according to a first therapy mode is provided. Input indicating a second therapy mode to be transitioned to following provision of the first therapy mode is received, with the second therapy mode being different from the first therapy mode. At least one default treatment parameter suitable for the second therapy mode is assigned or calculated. Each default treatment parameter of the second therapy mode is presented, with each default treatment parameter being adjustable by an operator during the presenting. Transitioning from the first therapy mode to the second therapy mode is performed by providing respiratory disorder treatment in accordance with the second therapy mode and each default treatment parameter and any adjustments made thereto prior to the transitioning. Advantageously, the chances of a patient being disturbed by transitioning from mode-to-mode are reduced.05-06-2010
20130133654SYSTEM AND METHOD FOR PROVIDING A PRESSURIZED FLOW OF BREATHABLE GAS TO THE AIRWAY OF A SUBJECT WITH STOCHASTIC FLUCTUATIONS - A pressurized flow of breathable gas is delivered to the airway of a subject to facilitate respiration by the subject. To enhance the effectiveness of the pressurized flow of breathable gas, stochastic fluctuations in the level of pressure at or near the airway of the subject are created. These stochastic fluctuations mimic similar oscillations present in so-called “bubble CPAP” systems. Since these stochastic fluctuations are intended to maintain the openness of the airway of the subject, and not to drive ventilation, these fluctuations tend to have a higher frequency and/or lower magnitude than changes in pressure that drive ventilation.05-30-2013
20090120439Method of triggering a ventilator - There is provided a method for controlling breathing gas flow of a ventilator for assisted or controlled ventilation of a patient as a function of a intra-thoracic airway pressure of the patient using a tracheal tube or naso-gastric tube. The intra-thoracic pressure is transmitted to a controller and the information detected is used to control a valve to vent gas from the inhalation tubing of the ventilator, thus triggering an inhalation cycle in the ventilator.05-14-2009
20120180792BRUSHLESS FAN MOTOR AND POSITIVE AIRWAY PRESSURE BREATHING APPARATUS USING THE SAME - A brushless fan motor includes a case, a tubular part disposed in the case and fixed at a bottom of the case, at least a bearing disposed in the tubular part, a toric coil surrounding the tubular part, and a rotating assembly. The rotating assembly includes a turntable, a rotating shaft, a loading ring, a permeability metal element and a toric radial magnet. The turntable has a top surface and fan blades disposed on the top surface. The rotating shaft is disposed through the bearing and connected to the turntable. The loading ring connected to the turntable surrounds the toric coil. The permeability metal element includes an annular part fixed at an inner wall of the loading ring. The toric radial magnet is fixed at an inner wall of the annular part. A positive airway pressure breathing apparatus using the brushless fan motor is also provided.07-19-2012
20130087146VENTILATION SYSTEMS AND METHODS - A ventilator includes a compressor, a storage vessel, a valve assembly communicating with the compressor, the storage vessel, and an inhalation line. A controller directs the valve assembly between a storage configuration where ventilation gas is delivered from the compressor into the storage vessel, and a delivery configuration where ventilation gas is delivered from the storage vessel to the inhalation line. The controller is coupled to a pressure sensor for detecting a first pressure within the storage vessel when the valve assembly is directed to the delivery configuration, and detecting subsequent pressure while ventilation gas is delivered from the storage vessel to the inhalation line, the controller determining the volume of ventilation gas delivered to the patient based at least in part on the difference between the first pressure and the subsequent pressure.04-11-2013
20090301487SYSTEMS AND METHODS FOR MONITORING AND DISPLAYING RESPIRATORY INFORMATION - Various embodiments of the present disclosure provide systems, methods and devices for respiratory support. As one example, a ventilation system is disclosed that includes a graphical display, a processor and a computer readable medium. The computer readable medium is communicably coupled to the processor and includes instructions executable by the processor to receive a measured pressure value, and receive a net flow value. The instructions are further executable to calculate a patient effort value based on a relationship between patient effort, the measured pressure value and the net flow value; and to plot the patient effort value to the graphical display.12-10-2009
20090301486SYSTEMS AND METHODS FOR TRIGGERING AND CYCLING A VENTILATOR BASED ON RECONSTRUCTED PATIENT EFFORT SIGNAL - Various embodiments of the present disclosure provide systems, methods and devices for respiratory support. As one example, a method for respiratory support is described that includes providing a measured pressure, and calculating a net flow based on at least one measured inlet flow and measured outlet flow. A relationship between a first value related to the measured pressure, a second value related to the measured net flow and a third value related to patient effort is used to provide a prediction of patient effort. An interim value is updated based at least in part on the prediction of the patient effort, and used to help compute a patient effort. A ventilation cycle is initiated using the computed patient effort.12-10-2009
20130056006INDUCTANCE COMPENSATION IN A PRESSURE SUPPORT SYSTEM - A system and method for delivering a flow of gas to an airway of a patient (03-07-2013
20130061852VALVE AND METHOD TO RELIEVE GASEOUS PRESSURE AND ARRANGEMENT FOR VENTILATING LUNGS - A valve is provided for relieving a gaseous pressure of a branching unit in flow communication with lungs of a subject. The valve comprises an inlet port in flow communication with the branching unit, an outlet port configured to release pressure by discharging a gas flow from the inlet port, and a valve seat in flow communication with the inlet port. The valve further comprises a valve member configured to close a gas discharge between the inlet port and the outlet port when forced against the valve seat, and to facilitate gas discharge between the inlet port and the outlet port when not forced against the valve seat. The valve further comprises a closing spring configured to direct a predetermined closing force to the valve member and an actuator configured to increase and decrease the closing force directed to the valve member.03-14-2013
20120192867PATIENT-CONTROLLED VENTILATION - A method of controlling a ventilator is disclosed that includes the steps of providing a patient with a ventilator patient control interface through which a patient controls at least one control parameter of a ventilator and configuring a processor to control the ventilator in response to the ventilator patient control interface such that the patient controls the at least one control parameter of the ventilator in accordance with pre-set limits on changes to the at least one control parameter.08-02-2012
20120192866CONSTANT MASS OXYGEN ADDITION INDEPENDENT OF AMBIENT PRESSURE - A constant mass oxygen addition device for use with a re-breathing apparatus is disclosed for use by individuals venturing into harsh environments, particularly the underwater environment, that remains unaffected by ambient pressure changes. This constant mass oxygen addition device comprises an intermediate chamber which is first pressurized with regulated pressure gas containing oxygen to a set value greater than ambient pressure and then subsequently vented to ambient pressure. This defines one constant mass dosing cycle. Multiple constant mass dosing cycles are repeated sequentially on a periodic basis sufficient to replace metabolic oxygen used by the individual and can be controlled either electronically or preferentially independent of electronics and linked to the respiratory rate of the diver. If desired, adjustment of the delivered oxygen mass for each cycle is accomplished by mechanically adjusting the volume of the intermediate chamber or by altering the regulation pressure of the connected oxygen supply.08-02-2012
20090020119RESPIRATOR AND A PROCESS FOR OPERATING A RESPIRATOR - Operating a respirator with an inspiration pressure-vs.-time curve (01-22-2009
20120234323Energy-harvesting respiratory method and device - This invention is a method, device, and system to provide respiratory assistance to people with Obstructive Sleep Apnea (OSA), or other respiratory conditions, comprising harvesting and storing energy from gas outflow during exhalation and using that stored energy to increase gas inflow during inhalation. In an example, this invention may provide Positive End-Expiratory Pressure (PEEP) or Continuous positive Airway Pressure (CPAP). This invention can be embodied in a self-contained energy-harvesting positive airway pressure mask, nasal inserts, or mouth appliance. This invention offers a combination of the following five benefits for Obstructive Sleep Apnea (OSA) treatment: minimally-invasive; energy self-sufficient; freedom of movement; hypercapnia avoidance; and adjustable energy harvesting over multiple respiratory cycles.09-20-2012
20080295838PROCESS FOR OPERATING A RESPIRATOR AND/OR ANESTHESIA DEVICE AND A DEVICE OPERATED CORRESPONDINGLY - A process for operating a respirator and/or an anesthesia device with measurement of a set percent Peak Expiratory Flow (% PEF) (15) or percent Peak Inspiratory Flow (% PIF) and regulation ofthe measured % PEF (15) or % PIF to the set % PEF (15) or % PIF. Furthermore, a suitable respirator and/or anesthesia device are provided.12-04-2008
20080295837METHOD TO LIMIT LEAK COMPENSATION BASED ON A BREATHING CIRCUIT LEAK ALARM - A method and system for ventilating a patient that compensates for leaks occurring within the patient breathing circuit while limiting the volume of breathing gas delivered to the patient. During the operation of a ventilator to supply breathing gases to a patient, the ventilator monitors for leak volumes occurring during the inspiratory phase and expiratory phase of the breathing cycle. Based upon the leak volumes sensed, the volume of breathing gas delivered by the ventilator is increased such that the tidal volume delivered to the patient is the desired tidal volume set by a clinician. The ventilator operates to generate a leak alarm when the leak volume exceeds an alarm threshold. If the leak alarm is generated, the tidal volume delivered to the patient is limited to the tidal volume being delivered prior to generation of the leak alarm. During compensation of the breathing gases delivered to the patient, the system and method determines whether the compensated tidal volume exceeds a maximum tidal volume threshold and limits the compensated tidal volume to the maximum tidal volume threshold.12-04-2008
20130019869BREATHING ASSISTANCE DEVICE, AND METHOD OF REGULATION - A breathing assistance device may include a turbine for generating flow of pressurized respiratory gas, a duct for carrying pressurized gas to a patient, and a mechanism to control gas pressure capable of elaborating a pressure setting for the turbine. The turbine is connected to a speed sensor for acquiring the rotation speed of a rotating element of the turbine. A mechanism controls a calculation in order to elaborate a pressure setting and to send the pressure setting to the turbine. A method regulates the pressure of a respiratory gas delivered by a turbine to a patient. The method involves elaborating a pressure setting for the turbine. The pressure setting is elaborated using a signal representative of the rotation speed of a rotating element of the turbine.01-24-2013
20130019868DETERMINATION OF LEAK DURING CPAP TREATMENT - A respiratory treatment apparatus and method in which a leak is determined by using an averaging window. The window starts at the present time and extends back in time to a point determined according to a current one of progressively detected phase measures of a first respiratory cycle and a corresponding phase measure attributable to a preceding second respiratory cycle. In another aspect, a jamming index indicates whether the leak is rapidly changing. To the extent that jamming is high, the leak estimate used progressively changes from that using sliding breath-window averaging to a more robust and faster responding low-pass filter method, and adjustment of ventilatory support based on measures employing estimated respiratory flow is slowed down or stopped.01-24-2013
20090205661SYSTEMS AND METHODS FOR EXTENDED VOLUME RANGE VENTILATION - Various embodiments of the present invention provide systems, methods and devices for delivering a defined gas mixture to a recipient. For example, various embodiments of the present invention provide ventilators that include at least two gas sources, a gas outlet and a differential flow transfer element. The differential flow transfer element receives one component gas from one of the gas sources at a first flow rate, and another component gas from the other gas source at a second flow rate. The differential flow transfer element distributes a mixture that includes at least the aforementioned component gases at a third flow rate via the gas outlet. The third flow rate is less than the sum of the first flow rate and the second flow rate.08-20-2009
20110284002PNEUMATIC TRANSIENT HANDLER AND METHOD - A method and device for handling transient pressures and flow processes in a breathing system is disclosed.11-24-2011
20110290251BREATHING CIRCUIT PRESSURE CONTROL SYSTEM - A breathing circuit pressure control system in connection of ventilation, controlling pressure in an airway line of the breathing circuit is provided. The breathing circuit pressure control system includes: a flow control element configured to control flow resistance in the airway line; an electromagnetic actuator configured to create a force acting on the flow control element; a ventilator control unit configured to control the electromagnetic actuator; an electrical control system configured to control the electromagnetic actuator; and a selector switch configured to select the electrical control system arranged to control the electromagnetic actuator and disconnect the ventilator control unit from controlling the electromagnetic actuator.12-01-2011
20110297154CONTROL OF SUPPLIED PRESSURE IN ASSISTED VENTILATION - Methods and apparatus for detecting the occurrence of a potential or actual overpressure during assisted ventilation are described. A blower (12-08-2011
20100101575METHOD AND APPARATUS FOR VENTILATION ASSISTANCE - A mask interface device is provided for a protective mask of the type having a mask filter and a mask expiratory port, the mask expiratory port having an expiratory port valve of the type that is normally closed and openable upon expiration, the mask filter having an inspiratory air inlet, the mask interface device comprising: a mask interface assembly mountable to the mask and having a mounting interface for mounting an air pressure generator in fluid communication with the inspiratory inlet of the mask filter; and an expiratory port interface assembly mountable to the mask expiratory port and comprising at least one opening for venting expired gas to atmosphere and a one-way valve that is positioned to control the flow of expired gas out through the at least one opening, and wherein the one-way valve is set to an opening pressure that provides positive end expiratory pressure or PEEP. Optionally, this opening pressure is between 2.5 and 20 cm H2O. Optionally, the mask interface device interface directly with the mask filter. In one embodiment of the invention, this interface does not require the filter to have a mating connection and is therefore is universal for a broad class of filters, for example cylindrical filters that project from the mask.04-29-2010
20100101574DETERMINATION OF LEAK DURING CPAP TREATMENT - In a CPAP or positive pressure ventilation system, leak is determined at each instant by a lookback for a time as long as single breath to establish the start of an averaging window over which low-pass filtered values used in the determination of a parameter of a leak model are averaged. A jamming index indicates whether the leak is rapidly changing. To the extent that jamming is high, the leak estimate used progressively changes from that using sliding breath-window averaging to a more robust and faster responding low-pass filter method, and adjustment of ventilatory support based on measures employing estimated respiratory flow is slowed down or stopped.04-29-2010
20100101576DETERMINATION OF LEAK AND RESPIRATORY AIRFLOW - Methods and apparatus for determining leak and respiratory airflow are disclosed. A pressure sensor (04-29-2010
20110168179Emergency Pulmonary Resuscitation Device - An emergency pulmonary resuscitation device is described. The device of the present invention provides emergency breathing for use in techniques such as CPR, and is preferably capable of interaction with an automatic external defibrillator. The device is easy to operate and provides feedback so that it may be used by persons without medical training. The device also works through a simple action, making it possible for it to be inexpensively manufactured and widely disseminated.07-14-2011
20120024286Variable Transition Pressure Profiles for a Bi-Level Breathing Therapy Machine - A method for controlling the transitions between two different pressures supplied by a breathing therapy device using a transition pressure profile for which the basic shape, the magnitude and the duration may be controlled by a user of the device or the user's therapist.02-02-2012
20100224190MODULAR POWERED AIR PURIFYING RESPIRATOR - A modular powered air purifying respirator (PAPR) which is comprised of a fan, motor, scroll, and power source mounted within one housing, and which accepts either traditional or conformal filters. Ambient air is drawn into the PAPR module through the attached filter by a fan, which is driven by direct connection to a motor. The pressurized air is then accelerated by an optimized scroll to the outlet in the PAPR housing. The PAPR module can be employed in multiple use configurations. The PAPR module further comprises a removable battery pack module that is easily retained to/removed from the PAPR module, enabling a user to be able to quickly remove a spent battery pack module and install a fresh battery pack module, thereby replacing the batteries within one breath cycle.09-09-2010
20100078026SUPPLEMENTAL GAS SAFETY SYSTEM FOR A BREATHING ASSISTANCE SYSTEM - A system for managing a supplemental gas supply in a breathing assistance system configured to provide breathing assistance to a patient includes a temperature sensor and a control system. The temperature sensor is configured to measure a temperature associated with a breathing assistance system configured to deliver a first gas and a supplemental gas toward a patient. The control system is configured to automatically control the flow of the supplemental gas based at least on the monitored temperature.04-01-2010
20100078024BREATHING ASSISTANCE SYSTEM WITH MULTIPLE PRESSURE SENSORS - A method for managing pressure in a breathing assistance system configured to provide breathing assistance to a patient via a patient connection system is provided. The method may include receiving one or more first pressure sensor signals from a first pressure sensor, and analyzing the one or more first pressure sensor signals. Based at least on the analysis of the one or more first pressure sensor signals, either the first pressure sensor or the second pressure sensor may be selected for use in controlling the breathing assistance provided to the patient, and the breathing assistance provided to the patient may be controlled based at least on signals from the to selected pressure sensor.04-01-2010
20100078023SYSTEMS AND METHODS FOR MANAGING PRESSURE IN A BREATHING ASSISTANCE SYSTEM - A breathing assistance system for providing breathing assistance to a patient is provided. The breathing assistance system may include a ventilation system for supplying a gas flow, a conduit operatively coupled to the ventilation system, and a pressure sensor configured to measure the pressure of the gas flow through the conduit. The pressure sensor may include a structure configured to create a localized pressure drop in the gas flow proximate the pressure sensor structure.04-01-2010
20110197883PORTING BLOCK FOR A MEDICAL VENTILATOR - A ventilator that is small, lightweight, and portable, yet capable of being quickly adapted to operate in a plurality of different modes and configurations to deliver a variety of therapies to a patent. A porting system having a plurality of sensors structured to monitor a number of parameters with respect to the flow of gas, and a number of porting blocks is used to reconfigure the ventilator so that it operates as a single-limb or dual limb ventilator. In the single-limb configuration, an active or passive exhaust assembly can be provided proximate to the patient. The ventilator is capable of operate in a volume or pressure support mode, even in a single-limb configuration. In addition, a power control mechanism controls the supply of power to the ventilator from an AC power source, a lead acid battery, an internal rechargeable battery pack, and a detachable battery pack.08-18-2011
20090120438Breathing Assistance Device Comprising an Independent Secondary Unit - The invention relates to a breathing assistance device (05-14-2009
20100122699COMBINATION LUNG VENTILATION AND MUCUS CLEARANCE APPARATUS AND METHOD - A medical device and method for combination lung ventilation and mucus clearance of a patient is disclosed. The medical device may be configured to provide lung ventilation with intermittent, on-demand mucus clearance, freeing the patient's mouth for activities of daily living such as when the patient is awake; and, in another configuration, the device can provide lung ventilation with automated mucus clearance, such as when the patient is sedated or asleep. The medical device may comprise a pressure generation source, a ventilation portion, and a mucus clearance portion. The mucus clearance portion may be separable from or separate from the ventilation portion such that the medical device is capable of maintaining lung ventilation with the mouth interface removed from the patient.05-20-2010
20090277448MANUAL VENTILATION WITH ELECTRONICALLY CONTROLLED APL VALVE - A breathing apparatus for ventilating the lungs of a patient with breathing gas, has: a breathing circuit configuration; a mechanical ventilation system; a manual ventilation system provided with a manual ventilation bag; a manual ventilation valve for enabling manual ventilation of breathing gas from the breathing circuit; a pressure sensor devised to detect the pressure level in the breathing circuit; an electronically controlled expiration valve (11-12-2009
20110203588AUTOMATED CONTROL FOR DETECTION OF FLOW LIMITATION - A respiratory flow limitation detection device, which can include an airway pressure treatment generator, determines a flow limitation measure (08-25-2011
20120167884PEEP REGULATION FOR A BREATHING APPARATUS - A breathing apparatus has an expiratory flow sensor unit, an expiratory pressure sensor unit, an expiratory pressure regulator, and an expiratory control unit operatively connected to the expiratory pressure sensor unit for a feedback control of an expiratory pressure during an expiratory phase of a breathing cycle. The expiratory control unit is adapted to provide a real time target pressure value during the expiratory phase to the expiratory pressure regulator for adjusting a desired positive end expiratory pressure (PEEP) level (PEEP07-05-2012
20080251077WIRELESS MEDICAL GASES MANAGEMENT SYSTEM - The present invention generally provides methods and systems for managing a medical gas system by using wireless sensors located at the point of use. In one embodiment, a wireless sensor is fixed to a gas outlet, and is configured to measure gas flow, and to detect whether the gas outlet is connected to a medical device. The gas flow and connection data is included in a wireless signal that is transmitted to a remote server. The data received by the server may be analyzed to determine if any local or system leaks are occurring. In addition, the data may be used to monitor patient therapies, to calculate costs, and to determine replenishment points.10-16-2008
20090266361Respiratory breathing devices, methods and systems - A powered air purifying respirator system for use with at least one filter system includes: a housing including at least one inlet port and at least one outlet port; a motorized air flow system to draw air into the housing via the at least one inlet port; a control system in communicative connection with the motorized air flow system; and a filter system sensor in communicative connection with the control system. The filter system sensor provides information to the control system relating to the type of the at least one filter system upon fluid connection thereof with the housing. The control system can control the motorized air flow system at least in part on the basis of the type of filter system sensed by the filter system sensor. Another powered air purifying respirator system for use with at least one filter system includes: a housing including at least one inlet port and at least one outlet port; a motorized air flow system to draw air into the housing via the at least one inlet port; a control system in communicative connection with the motorized air flow system; and a pressure sensor in communicative connection with the control system to provide information to the control system relating to ambient pressure. The control system can, for example, control the motorized air flow system at least in part on the basis of the information relating to ambient pressure.10-29-2009
20090266360SYSTEM AND METHOD FOR MOBILIZING OCCLUSIONS FROM A BREATHING TUBE - A method for mobilizing an occlusion from a breathing tube is presented. The method includes automatically mobilizing the occlusion from the breathing tube by regulating an inspiratory flow, an expiratory flow, or a combination thereof, where the breathing tube is configured to operationally couple a patient to a ventilation system, and where the ventilation system is configured to provide artificial respiration to the patient.10-29-2009
20090165796SYSTEM TO DELIVER OXYGEN IN AN AIRCRAFT - The invention relates to a system to deliver a respiratory gas to crew members in a cabin of an aircraft, said system comprising at least one respiratory mask, an ambient air inlet for admission of ambient air into said respiratory mask, a source of additional gas, supply lines to transport said additional gas to said one respiratory mask, mixing means provided on said supply lines to mix said additional gas with ambient air to supply a respiratory gas corresponding to a mixture of said additional gas and said ambient air to said one respiratory mask, regulation means to regulate the additional gas content of said respiratory gas at least partly as a function of the aircraft altitude.07-02-2009
20120291783BREATHING ASSISTANCE APPARATUS - Breathing assistance apparatus includes a gases supply unit adapted to, in use, deliver a stream of pressurised gases from an outlet. The gases supply unit is adapted to vary the pressure of the stream of pressurised gases. A supply path includes a flexible self-supporting gases transportation pathway having a first end connected to the outlet so that the gases transportation pathway receives the stream of gases and conveys the gases to a patient. A patient interface is connected to the second end of the gases transportation pathway receives a stream of gases. At least one sensor measures at least one information parameter of the supply path. A control system associated with the gases supply unit receives the information parameter. The control system contains reference data, and compares the received data to reference data, and determines a supply path based on the comparison.11-22-2012
20120060839SYSTEM AND METHOD FOR CONTROLLING LEAKAGE OF A CIRCUIT DELIVERING A PRESSURIZED FLOW OF BREATHABLE GAS TO A SUBJECT - A pressurized flow of breathable gas is delivered to the airway of a subject through a gas circuit (03-15-2012
20090050151Breathing-Gas Delivery And Sharing System And Method - A device, system, and method for isolating a ventilator from one or more patients in which the delivery conditions of gas delivered to an isolation device from a ventilator may drive the delivery of breathing-gas delivered to one or more patients, the breathing-gas having the same or different delivery conditions. In one embodiment, an isolation device may have a housing and a movable partition. The movable partition may be joined to the housing, The movable partition may have a patient side on a first side of the partition and an actuating side on a second side of the partition. The isolation device may include an inlet pressure regulator on the actuating side and/or an exhaust pressure regulator on the patient side. These regulators may alter the delivery conditions (including, but not limited to, pressure and volume) of breathing-gas delivered to a patient.02-26-2009
20090084381PORTABLE DRAG COMPRESSOR POWERED MECHANICAL VENTILATOR - A ventilator, device and system comprising a rotating compressor, preferably a drag compressor, which, at the beginning of each inspiratory ventilation phase, is accelerated to a sufficient speed to deliver the desired inspiratory gas flow, and is subsequently stopped or decelerated to a basal flow level to permit the expiratory ventilation phase to occur. The ventilator device is small and light weight enough to be utilized in portable applications. The ventilator device is power efficient enough to operate for extended periods of time on internal or external batteries. Also provided is an oxygen blending apparatus which utilizes solenoid valves having specific orifice sizes for blending desired amounts of oxygen into the inspiratory gas flow. Also provided is an exhalation valve having an exhalation flow transducer which incorporates a radio frequency data base to provide an attendant controller with specific calibration information for the exhalation flow transducer.04-02-2009
20090205660Monitor for automatic resuscitator with primary and secondary gas flow control - The present invention pertains generally to a monitoring system for a resuscitator which detects operation of the resuscitator and a controller unit for a supply of therapeutic gas to a resuscitator, and more specifically, a flow controller for a supply a therapeutic gas to an automatic resuscitator which is triggered by a single point pressure signal provided by the cycling of the automatic resuscitator from a controlled inhalation phase to a controlled exhalation phase. The monitoring aspect of the system detects single point low pressure signals which are sequentially compared against a time clock. Failure of the resuscitator system itself to generate a low pressure signal against the integrated time clock causes an alarm condition. Further, gas management is effected by a flow controller integrated into the monitor, a gas management system which responds to the single point low pressure signal and operate a primary gas control valve attached between a gas supply and an automatic resuscitator such that gas is allowed to flow to the resuscitator when the resuscitator is in an inhalation mode and gas flow is interrupted when the resuscitator is in an exhalation mode. A secondary gas control valve is integrated into the gas management system in parallel to the primary gas control valve. The flow controller includes a low threshold pressure sensor which is actuated by means of a recurrent low pressure pulse generated by the automatic resuscitator itself through the cycling of the resuscitator and remains essentially unaffected by the respiratory cycling of the patient, thus preventing false triggers and greatly simplifying the flow controller operation and format. The low threshold pressure sensor is coupled to a processor wherein the processor reads the occurrence of a pressure event at the pressure sensor and which then closes the primary gas control valve and starts a clock. As the pressure is decreased in the gas management system resulting from the primary gas control being moved to a closed position, the secondary gas control valve moves to open state, thus allowing the gas management system to vent to atmosphere during exhalation, reducing the pressure of the system to an operator defined positive level. Once the clock reaches a pre-defined duration, the primary gas control valve is reopened, the pressure in the gas management system increases thus closing the secondary gas control valve, the automatic resuscitator continues into an inhalation mode, and the process repeats.08-20-2009
20110139154IDENTIFICATION SYSTEM AND METHOD FOR MASK AND VENTILATOR COMPONENTS - Components of a CPAP or other patient ventilation apparatus have a remotely-readable identification tag encoded with component identification. data. The flow generator controller is programmed to receive data derived from the identification tag from a tag reader, and to adapt functions of the flow controller to coordinate with the component.06-16-2011
20080264417MODULAR RESPIRATION SYSTEM FOR THE MECHANICAL RESPIRATION OF A PATIENT - A modular respiration system is provided for the mechanical respiration of a patient. The respirator system has a modular respiration module (10-30-2008
20100229864System For Providing Emergency Oxygen And Therapeutic Oxygen - The invention relates to a system for providing emergency oxygen and therapeutic oxygen in an aircraft, said system having an oxygen source, an oxygen conduction system comprising a second oxygen outlet, a device for providing emergency oxygen comprising a second oxygen inlet, a device for providing therapeutic oxygen, having a first oxygen inlet and a first oxygen outlet. According to the invention, the second oxygen outlet can be coupled to the first oxygen inlet, the first oxygen outlet can be coupled to the second oxygen inlet and the second oxygen outlet can be coupled to the second oxygen inlet.09-16-2010
20110139153BREATHING ASSISTANCE DEVICE WITH SEVERAL SECURE RESPIRATOR MODES AND ASSOCIATED METHOD - A breathing assistance device, capable of operating according to several respiratory modes forming a list of possible modes. The device is equipped with a mechanism for selecting a desired mode from a group of modes that can be selected. The device also includes a mechanism for realizing a configuration diagnostic of the device, a mechanism for associating with authorization level with each possible mode, according to the results of the diagnostic, with the lowest authorization level corresponding to unauthorized modes, a mechanism for authorizing only the selection of authorized modes, in such a way that selecting unauthorized modes is impossible.06-16-2011
20090241951LEAK-COMPENSATED PRESSURE TRIGGERING IN MEDICAL VENTILATORS - This disclosure describes systems and methods for compensating for inelastic and elastic leaks in a ventilation system. The disclosure describes a model-based enhancement to conventional pressure triggering methodology that optimizes the timing and patient work of pressure triggering performance. The methods and systems described herein compensate for the additional effort a patient has to exert to generate the same amount of airway pressure drops compared to no leak condition. One method described includes calculating an elastic leakage and an inelastic leakage based on current measurements of pressure and flow in the ventilation system and then compensating a pressure threshold for the effects of the inelastic and elastic leaks in the system.10-01-2009
20100147301Recognition System for an Apparatus That Delivers Breathable Gas to a Patient - An adapter for use with a flow generator includes a conduit (06-17-2010
20110232641SYSTEM AND METHOD FOR VENTILATING LUNGS - A system for ventilating lungs of a subject is disclosed herein. The system includes a control unit configured to control operation of the system. The system also includes a machine ventilator circuit configured to assist the breathing functions of the subject, the machine ventilator circuit includes an inspiration delivery unit, and an expiration circuit. The system also includes a manual ventilation circuit comprising a manual bag guiding a gas from the manual bag wherein a gas flow is guided out from the manual bag to assist an inspiration phase, a gas flow is received to fill the manual bag during an expiration phase, and wherein the gas flow received to fill the manual bag during the expiration phase at least partially comprises the gas flow guided to assist the inspiration phase09-29-2011
20100018529Breathing assistance device comprising a gas regulating valve and associated breathing assistance method - The invention relates to a breathing assistance device for a patient (P), the device including: —a source of respiratory pressurised gas (S), a gas transmission duct (01-28-2010
20100236554DEVICES, SYSTEMS AND METHODS FOR OPERATION OF BREATHING APPARATUSES IN MULTIPLE MODES - A breathing system with a facepiece that includes a first port adapted to be placed in fluid connection with the outlet of a regulator assembly to introduce pressurized breathing gas into the facepiece; a second port adapted to be connected to an air purifying system; and an exhaust valve through which the user's exhausted breath can exit the facepiece. The breathing system also includes a pressure adjustment mechanism that includes a communication link in communicative connection with an actuator such that the exhaust pressure adjustment mechanism sets the internal facepiece pressure required to open the exhaust valve, independently of the respiration of the user, to a first pressure when the actuator is in the first state, to a second pressure when the actuator is in the second state. The first pressure is higher than the second pressure.09-23-2010
20100236553LEAK-COMPENSATED PROPORTIONAL ASSIST VENTILATION - This disclosure describes systems and methods for compensating for leakage when during delivery of gas from a medical ventilator in a proportional assist mode to a patient. The technology described herein includes systems and methods to compensate the delivery of PA ventilation for leakage in the patient circuit by using leak-compensated lung flows as well as leak-compensated respiratory mechanics parameters (lung compliance and lung resistance) estimated in a manner that compensates for elastic and inelastic leaks from the ventilation system.09-23-2010
20100218765FLOW RATE COMPENSATION FOR TRANSIENT THERMAL RESPONSE OF HOT-WIRE ANEMOMETERS - Systems and methods are described for application of a transitory corrective modification to a hot-wire anemometer flow voltage and/or calculated flow rate to compensate for transient thermal response of the anemometer during a change in mixture of a mixed gas being measured. According to one embodiment a method of applying the transitory corrective modification is provided. An output signal of an exhalation flow sensor of a medical ventilator is received. The flow sensor includes a hot-wire anemometer. The output signal is indicative of a rate of flow of expired gas by a patient. Transient thermal response of the hot-wire anemometer is compensated for by applying a corrective modification to the output signal or a value based thereon. The corrective modification is based at least in part on a fraction of inspired oxygen (FiO2) being supplied by the medical ventilator to the patient.09-02-2010
20090320843ELECTROMECHANICAL REGULATOR WITH PRIMARY AND BACKUP MODES OF OPERATION FOR REGULATING PASSENGER OXYGEN - The electromechanical regulator for passenger oxygen is a hybrid oxygen regulator that provides for electronic or mechanical regulation of oxygen flow. The electronic portion of the regulator consists of an inlet solenoid valve, an outlet solenoid valve, a cabin pressure transducer, a regulated output transducer and a PID based controller, and the solenoid valves are normally biased so that in the event of an electronic system failure or a power supply failure the system will automatically revert to mechanical operation.12-31-2009
20080230061SETTING EXPIRATORY TIME IN MANDATORY MECHANICAL VENTILATION BASED ON A DEVIATION FROM A STABLE CONDITION OF END TIDAL GAS CONCENTRATIONS - A method of setting expiratory time in controlled mechanical ventilation varies a subject's expiratory times; determines end tidal gas concentrations associated with the expiratory times; establishes a stable condition of the gas concentrations; and determines an optimal expiratory time based on a deviation from the stable condition. A device for use in controlled mechanical ventilation comprises means for the same.09-25-2008
20110232640COMBI-VALVE FOR A BLOWER DRIVEN VENTILATOR - A valve assembly for a blower driven ventilator has a first conduit (09-29-2011
20110126833CLOSED LOOP CONTROL SYSTEM FOR A HIGH FREQUENCY OSCILLATION VENTILATOR - A control system for a high frequency oscillating ventilator (HFOV) includes an oscillator controller and a mean airway pressure (MAP) controller. The HFOV includes a reciprocating piston which is adapted to generate positive and negative pressure waves for delivery to a patient airway. The oscillator controller comprises a pair of closed loop control circuits including an oscillator pressure loop and a centering loop which are collectively adapted to regulate frequency and amplitude of piston reciprocations and centering of the piston. The MAP controller comprises a closed loop control circuit that is adapted for regulating MAP at the patient utilizing feedback in the form of patient circuit pressure. Likewise, the oscillator controller utilizes patient circuit pressure as well as piston displacement feedback in order to regulate movement of the piston.06-02-2011
20110108032Overpressure Protection System and Method for a Hyperbaric Chamber - An overpressure protection system and method for a hyperbaric chamber having a secondary relief valve in pressure communication with a hyperbaric chamber and configured to actuate upon occurrence of a predetermined pressure condition. Actuation of the secondary relief valve causes an output signal to be delivered to a relay input, which results in actuation of an emergency vent valve to close an oxygen shutoff valve to terminate the flow of oxygen to the chamber. In the preferred embodiment, the predetermined pressure condition occurs when the chamber pressure exceeds the maximum chamber set point plus a predetermined pressure differential. In the preferred embodiment, the relay may be pneumatic or electromechanical.05-12-2011
20090241952SYSTEMS AND METHODS FOR COMPENSATING FOR PRESSURE DROP IN A BREATHING ASSISTANCE SYSTEM - A breathing assistance system configured to determine pressure drop may include a gas delivery system configured to deliver gas toward a patient, one or more sensors configured to measure one or more parameters of gas delivered by the gas delivery system, a calibration module, and a pressure drop calculation module. The calibration module may be configured to perform one or more pressure drop calibration tests, each pressure drop calibration test measuring a pressure drop in gas flowing through a breathing assistance system apparatus at a particular flow rate; and based at least on the results of the one or more pressure drop calibration tests, generating a non-linear equation relating (a) pressure drop in gas flowing through the breathing assistance system apparatus with (b) flow rate of gas flowing through the breathing assistance system apparatus. The pressure drop calculation module may be configured to determine pressure drops in gas flowing through the breathing assistance system apparatus for various flow rates based at least on the non-linear equation.10-01-2009
20110023879Ventilator Based On A Fluid Equivalent Of The "Digital To Analog Voltage" Concept - The present invention is directed to a ventilator that, in one embodiment, uses one or more valve banks having precalibrated orifices to perform real time control of flow metering devices and, in a second embodiment, uses a choked flow orifice and upstream gas pressure regulator to generate a desired flow trajectory.02-03-2011
20110240024Air delivery system - An air delivery system includes a controllable flow generator, a primary controller, and an auxiliary controller. The flow generator is operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment. The primary controller is associated with at least one primary control feature to select at least a first aspect of operation of the flow generator. The auxiliary controller is associated with at least one auxiliary control feature to select at least a second aspect of operation of the flow generator. The second aspect selected by the auxiliary controller is different than the first aspect selected by the primary controller. The primary and auxiliary controllers may be interchangeably usable to control operation of the flow generator.10-06-2011
20110079224System, apparatus and method for maintaining airway patency and pressure support ventilation - An assembly for modifying airflow into a nasopharyngeal airway or trachea of a patient. A valve assembly having an inlet and an outlet attaches to a traditional airflow generator. A valve seal within the assembly is operable by a solenoid and is adapted to cycle in response to a programmable controller circuit wherein upon activation of both the airflow generator and the controller circuit, pressurized air from the airflow generator continuously enters the inlet but passes out of the outlet of the assembly only when the solenoid causes the valve seal to retract and to at least partially unblock the outlet such that the pressurized air is converted into a single, repeatable burst exiting the outlet thereby modifying the traditional airflow.04-07-2011
20110126832Exhalation Valve Assembly - An exhalation valve assembly that controls the pressure of exhaled gas in a ventilation system is described. The exhalation valve assembly includes an actuator module that may be fixed to the ventilation system and a valve module, removable for cleaning or disposal, through which the exhaled gas flows and that controls the pressure and release of the exhaled gas to the environment. Other components may also be incorporated into the assembly including a filter module, a flow meter and a condensate trap.06-02-2011
20100224189PROCESS FOR OPERATING A RESPIRATOR - A process for controlling a respirator with reduced gas excess, wherein a load situation (09-09-2010
20110240025SYSTEM AND METHOD FOR TREATING LUNG DISEASE USING POSITIVE PRESSURE AIRWAY SUPPORT - A method of treating lung disease, such as asthma or COPD, is provided that includes delivering positive pressure support to an airway of a patient during a plurality of respiratory cycles, and automatically varying a pressure level of the positive pressure support during at least a portion of the inspiratory phase of the patient in a number of the respiratory cycles.10-06-2011
20090032021Jet-Endoscope - In a jet endoscope (02-05-2009
20090032020Gas Pressure Intensifier System for use with a Ventilator or Resuscitator - The present invention is directed to a system for supplying gas to a pneumatic logic controlled system such as ventilator or resuscitator. The system produces a high pressure gas stream and a low pressure gas stream from an intermediate gas pressure source. The intermediate pressure source could be any oxygen supply including a chemical oxygen generator or compressor. The high pressure gas stream has the water removed from the gas stream. The high pressure gas provides an energy source to the pneumatic logic of the ventilator or a resuscitator. The output flow of the pneumatic logic is used to control the flow of the low pressure gas by means of a proportional flow control valve. The proportional flow control valve combines the signal gas flow from the pneumatic control logic and the low pressure gas.02-05-2009
20100065054METHODS FOR BATTERY POWER MANAGEMENT OF POSITIVE AIRWAY PRESSURE APPARATUS - Methods relating to the power management of positive airway pressure apparatus using a battery are disclosed herein. The methods, in various aspects, are adapted to prolong the delivery of a positive airway pressurized therapy when the positive airway pressure apparatus is operated under battery power.03-18-2010
20110174308PRESSURE CONTROL IN RESPIRATORY TREATMENT APPARATUS - An over-pressure control device prevents over-pressure conditions during the delivery of pressure treatment therapy to a patient with a respiratory treatment apparatus. The device may prevent delivered pressure from exceeding a first maximum pressure threshold. The device may also prevent the delivered pressure from exceeding a second maximum pressure threshold when the delivered pressure exceeds another pressure threshold for a period of time. In some embodiments, the second maximum pressure threshold may be lower than the first maximum pressure threshold. In an example embodiment, a set of comparators are configured to compare pressure with a maximum pressure threshold and to control a reduction in the pressure if the pressure exceeds the maximum pressure threshold. The set may also be configured to compare the pressure with a pressure threshold and to control reduction in the maximum pressure threshold if the pressure exceeds the pressure threshold for a period of time.07-21-2011
20110030686OXYGEN CONCENTRATOR APPARATUS AND METHOD HAVING VARIABLE OPERATION MODES - 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 operate in multiple modes, automatically determined or selected by the user, to take into account the different activity levels of the user.02-10-2011
20110146683Sensor Model - The disclosure describes a novel approach of utilizing a model-based approach for estimating a parameter at the wye without utilizing a sensor at the wye in the circuit proximal to the patient.06-23-2011
20110146682SENSOR APPARATUS AND METHOD TO REGULATE AIR FLOW IN A POWERED AIR PURIFYING RESPIRATOR - A probe assembly of a sensor is arranged in an airflow channel. A first probe of the assembly has an inlet. The inlet is at a first point in the airflow channel. A second probe of the assembly has an inlet. The inlet is in fluid communication with the airflow channel. The second probe inlet is closer to a surface defining a perimeter of the channel than is the first probe inlet.06-23-2011
20110174307Device for Supplying Oxygen to the Occupants of an Aircraft and Pressure Regulator for Such a Device - Device for supplying oxygen to occupants of an aircraft comprising an oxygen source at a first pressure known as a high pressure, a first oxygen supply line at a second pressure known as an intermediate pressure, first means for expanding/regulating the oxygen from the source to the intermediate second pressure, to feed into the first oxygen supply line, a second oxygen supply line at a third pressure known as the low pressure, second means for expanding/regulating the oxygen from the source to the third pressure to feed into the second oxygen supply line, characterized in that the first and second expansion/regulating means are positioned within one and the same regulator.07-21-2011
20100275918CHARACTERISATION OF MASK SYSTEMS - A method and a CPAP apparatus for characterizing a plurality of different mask systems, e.g., masks and hoses, are provided. The CPAP apparatus can be calibrated for different mask systems and hoses by including sensors configured to measure flow and pressure at a flow generator of the CPAP apparatus. When the flow generator is fitted to a new mask system, or any changes are made to an existing mask system, mask or patient interface and/or hose, a method for calibrating the flow generator for the new mask system, mask and/or hose is provided. The method includes determining air flow characteristics using flow measurements made during a first test period when the flow through the mask system is open, measuring or estimating pressure in the mask system during a second test period when the 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 test period and the pressure measurements made during the second test period.11-04-2010
20100319698OXYGEN CONSERVATION SYSTEM FOR COMMERCIAL AIRCRAFT - 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.12-23-2010
20110108033APPARATUS AND METHOD FOR CONTROLLED DELIVERY OF A BREATHING GAS TO THE RESPIRATORY TRACTS OF A USER - The present invention relates to an apparatus for controlled delivery of a flow of breathing gas to the respiratory tracts of a user. Said apparatus comprising a blower unit adapted to provide a gas flow, a nasal cannula with first and second outlets, and first and second gas paths connecting the blower unit to the first and second outlets, respectively. The Characteristics of the gas flow through each outlet can be controlled, sensed and/or adjusted independently.05-12-2011
20110132361Ventilation System With Removable Primary Display - The disclosure describes a novel approach for displaying information on a ventilator system. The disclosure describes a novel respiratory system including a removable primary display and system status display. Further, the disclosure describes a novel method for displaying ventilator information and a novel method for controlling a ventilator system.06-09-2011
20110132362Ventilation System With System Status Display Including A User Interface - The disclosure describes a novel approach for displaying information on a ventilator system. The disclosure describes a novel respiratory system including a removable primary display and system status display. Further, the disclosure describes a novel method for displaying ventilator information and a novel method for controlling a ventilator system.06-09-2011
20110197884VOLUME CONTROL IN A MEDICAL VENTILATOR - A ventilator that is small, lightweight, and portable, yet capable of being quickly adapted to operate in a plurality of different modes and configurations to deliver a variety of therapies to a patient. A porting system having a plurality of sensors structured to monitor a number of parameters with respect to the flow of gas, and a number of porting blocks is used to reconfigure the ventilator so that it operates as a single-limb or dual limb ventilator. In the single-limb configuration, an active or passive exhaust assembly can be provided proximate to the patient. The ventilator is capable of operate in a volume or pressure support mode, even in a single-limb configuration. In addition, a power control mechanism controls the supply of power to the ventilator from an AC power source, a lead acid battery, an internal rechargeable battery pack, and a detachable battery pack.08-18-2011
20080216833Flow Sensing for Gas Delivery to a Patient - A pressure support system that delivers a flow of gas to an airway of a patient. The system comprises a pressure generator, a torque monitor, a rotation monitor, and a processor. The pressure generator comprises an impeller and a motor. The impeller is coupled to the motor such that at least a portion of torque generated by the motor is provided to the impeller. As the impeller rotates through the body of breathable gas, the gas applies a torque to the impeller, and the impeller applies a force to the gas generating the gas flow. The torque monitor determines information related to the torque generated by the motor. The rotation monitor determines information related to a rotational velocity of the impeller and/or the motor. The processor determines one or more parameters of the flow of gas based on the information determined by the torque and rotation monitors.09-11-2008
20080216831STANDALONE CPAP DEVICE AND METHOD OF USING - A stand along continuous pressure airwave pressure (CPAP) device and associated method are described for use in treating and/or diagnosing sleep apnea disorders. The CPAP device includes the interconnected components of a mouthpiece, a housing, an airway, a blower, a cover, a control circuit and an on/off switch. The method includes the steps of allowing, attaching, biting, coupling, detaching, downloading, moisturizing, obtaining, pressing, sleeping, and withdrawing.09-11-2008
20080216832Pressure Support Method with Automatic Comfort Feature Modification - A method of delivering a flow of gas to a patient's airway via a pressure generating system and a patient circuit. A controller receives a treatment set point from an input source and determines an adjusted treatment set point based on the treatment set point and a comfort feature function, which in one embodiment, is not based on a physiological condition of such a patient. In another embodiment, the controller provides a respiratory treatment therapy during a therapy session based on the treatment set point and the comfort feature, which is modified automatically during a therapy session without user intervention based on a comparison of the treatment set point to a treatment set point variable. The controller controls the operation of the pressure generating system based on the adjusted treatment set point or the combination of the treatment set point and the comfort feature.09-11-2008
20110259332Ventilation System With System Status Display For Configuration And Program Information - The disclosure describes a novel approach for displaying information on a ventilation system. The disclosure describes a novel respiratory system including a removable primary display and system status display. Further, the disclosure describes a novel method for displaying ventilator information and a novel method for controlling a ventilation system.10-27-2011
20090241953VENTILATOR WITH PISTON-CYLINDER AND BUFFER VOLUME - A mechanical ventilator is provided with a piston-cylinder for performing an air displacement function and a buffer volume and associated output valve for providing an air metering function. The piston-cylinder may comprise a reciprocating arrangement, in which compressed air is supplied to the buffer volume with each stroke of the piston.10-01-2009
20110132363BREATHING ASSISTANCE APPARATUS - A breathing assistance apparatus operates in alternating inhalation and expiratory phases wherein a) the control means of the apparatus comprise selection means capable of selecting a pressure parameter or a flow rate parameter to define; b) the reference value for the gas source, the selection means are controlled by an automatic control unit being: I) connected to pressure and flow rate sensors situated on the inhalation duct to form a direct closed regulation loop for selecting a reference value parameter, II) associated to a program allowing the selection to be made in real time from a pressure or flow rate signal, so that the association of a direct closed regulation circuit for the selection of a reference value parameter with a valve permitting proportional operation, allows real time control of barometric and volumetric operating modes, between and during the inhalation and expiratory phases. The invention also concerns associated operating processes.06-09-2011
20110146681Adaptive Flow Sensor Model - The disclosure describes a novel approach of estimating patient sensor data for sensors in sensor tubing or sensor lines during purging or autozeroing or any other situations under which no measurement is provided by the sensor.06-23-2011
20120145151AMBU-BAG AUTOMATION SYSTEM AND METHOD - A device for automatically squeezing and releasing an AMBU-bag is disclosed. A device has a housing and a mechanical compression squeezer in the housing. There are openings in the housing for inlet tubes and outlet tubes of AMBU-bag to pass in and out of the housing. A powered actuator powers the compression squeezer. Alarms and signals provide information regarding excessive pressure and regarding bag cycling.06-14-2012
20120304994RECOGNITION SYSTEM FOR AN APPARATUS THAT DELIVERS BREATHABLE GAS TO A PATIENT - An adapter for use with a flow generator includes a conduit attachable to the outlet of the flow generator and an identifying element supported by the conduit and providing an identifying feature unique to a specific peripheral component attachable to the flow generator. The identifying feature is communicatable to the flow generator so that appropriate operating parameters of the flow generator may be automatically selected by the flow generator to coordinate with the specific peripheral component.12-06-2012
20100236552Cpap Systems - A CPAP system includes a flow generator, a patient interface, an air delivery conduit that interconnects the flow generator and the patient interface, and a packaging arrangement including at least one storage facilitating member to allow storage of the air delivery conduit. The at least one storage facilitating member may be provided to the flow generator, a cradle, and/or the air delivery conduit.09-23-2010
20110155133Mask Pressure Regulation in Cpap Treatment and Assisted Respiration by Dynamic Control of Mask Vent Flow - An air delivery system includes an air flow generator to provide a pressurized flow of air, a patient interface to provide a seal with the patient's face in use, an air delivery conduit to interconnect the air flow generator and the patient interface, and a controllable vent valve to control venting from the patient interface. The vent valve is controlled to maintain a substantially constant air flow in the air delivery conduit and the air flow generator.06-30-2011
20120012109BREATHING ASSISTANCE DEVICE - The present invention proposes a breathing assistance device for a patient, comprising: 01-19-2012
20120055475OXYGEN CONCENTRATOR SYSTEM AND METHODS FOR ORAL DELIVERY OF OXYGEN ENRICHED GAS - Described herein are various embodiments of an oxygen concentrator system. In some embodiments, an oxygen concentrator system may be used to provide oxygen enriched gas to a patient using a mouthpiece.03-08-2012
20120055474METHODS AND SYSTEMS FOR PROVIDING OXYGEN ENRICHED GAS - Described herein are various embodiments of an oxygen concentrator system. In some embodiments, the delivery of oxygen enriched air by an oxygen concentrator system is controller based on an inhalation profile of a user of the oxygen concentrator system.03-08-2012
20120060837NASAL INTERMITTENT MANDATORY VENTILATION (NIMV) CONTROL SYSTEM IN A VENTILATOR - A ventilator including an inspiration flow control unit and an expiration flow control unit coupled to the inspiration flow control unit. The ventilator also includes a nasal intermittent mandatory ventilation (NIMV) control system coupled to the inspiration flow control unit and the expiration flow control unit. The NIMV control system is configured to automatically and simultaneously adjust an inspiration flow and an expiration flow. A pressure of the inspiration flow is increased from a baseline pressure to a control pressure. A pressure of the expiration flow is returned to the baseline pressure.03-15-2012
20120060838SYSTEM AND METHOD FOR PROMPTING A SUBJECT TO ALTER ONE OR MORE BREATHING PARAMETERS - A subject is prompted to consciously alter one or more breathing parameters of respiration. To prompt the subject to alter one or more breathing parameters, a pressurized flow of breathable gas is provided to the airway of the subject. One or more gas parameters of the gas in the pressurized flow of breathable gas are adjusted to provide breathing cues to the subject that encourage the subject to consciously adjust respiration such that the one or more breathing parameters are altered. Information is also conveyed to the subject through a user interface that dynamically provides information to the subject about the breathing cues. 03-15-2012
20120103336Ventilator System and Method - A ventilator is disclosed herein. The ventilator may include a blower, and a controller operatively connected to the blower. The controller is configured to automatically identify an optimal target inspiratory and expiratory pressure level for the treatment of a sleep related breathing disorder. The controller is also configured to regulate the operation of the blower in a manner adapted to deliver the optimal target inspiratory and expiratory pressure level.05-03-2012
20120247470AUTOMATIC IDENTIFICATION OF A PATIENT INTERFACE DEVICE IN A PRESSURE SUPPORT SYSTEM - A pressure support system includes a pressure generator, a pressure sensor, a flow sensor, and a controller cooperating with the pressure sensor and the flow sensor to control operation of the pressure generator. The controller is structured to automatically identify a patient interface device in use with the pressure support system by detecting a change of exhaust flow of up to a predetermined amount across a predetermined pressure gradient of a pressure range of the pressure support system.10-04-2012
20100288279PATIENT CONTROL OF VENTILATION PROPERTIES - A ventilator (11-18-2010
20100012123OXYGEN BREATHING DEVICE WITH MASS FLOW CONTROL - The present invention relates to an oxygen breathing device, in particular for providing oxygen to passengers or crew of an aircraft, the device comprising an oxygen source for providing pressurized oxygen, a valve connected to the oxygen source via a pressure line, a control unit for controlling said valve, and at least one nozzle for dispensing the oxygen passing through said valve. In particular, the present invention relates to an oxygen breathing device comprising a measuring unit for determining the mass flow rate of oxygen passing through said nozzle. Furthermore, the invention relates to a method for supplying oxygen to a person, in particular a flight passenger, using an oxygen breathing device.01-21-2010
20090320842MASK AND FLOW GENERATOR SYSTEM - A system for delivering a pressurized flow of breathable gas to a patient includes a patient interface configured to contact the patient's head. The patient interface includes a frame, a cushion supported by the frame and configured to sealingly connect the patient interface to the patient's face and form a chamber between the frame and the wearer's face, and an inlet port in the frame to receive the pressurized flow of breathable gas. A flow generator is configured to generate the pressurized flow and is capable of creating a pressure of about 2-40 cm H12-31-2009
20120279501VENTILATOR BREATH DISPLAY AND GRAPHIC USER INTERFACE - The invention is directed to a ventilation control system for controlling the ventilation of a patient. The ventilation control system utilizes a user-friendly user interface for the display of patient data and ventilator status. The user interface includes a graphic representation of a breath cycle that displays the breath cycle currently being ventilated, and is also responsive to changes in ventilation settings to assist the user in evaluation the effect of those changes on the ventilator strategy before the changes are implemented.11-08-2012
20120227738CPAP SYSTEMS - A CPAP system includes a flow generator (09-13-2012
20120260918METHOD OF CONTROLLING A POWERED AIR PURIFYING RESPIRATOR - A method of controlling a powered air purifying respirator blower system to detect a low air pressure high airflow event is disclosed. The blower system comprises a fan powered by an electric motor, controlled by an electronic control unit for delivering a forced flow of filtered air to a user. The electronic control unit has a plurality of data points representing events defining an acceptable operating range in terms of different characteristics of the blower system stored therein. The method comprises sampling a characteristic that represents the operating condition of the blower to obtain a sampled data point; comparing the sampled data point and the stored data point representing a low air-pressure high airflow event, for the same characteristic; repeating the sampling during a fixed time period, and if the comparing step indicates the low air-pressure high airflow event has been reached for the majority of the time period; activating an alarm. Use of a respirator employing the method to deliver a forced flow of filtered air to a contained user environment is also disclosed.10-18-2012
20080302363Ventilator apparatus - One or more embodiments of the presently described invention provides a ventilator including a timing device, an electric power source and a flow control device. The timing device is electronically controlled and is capable of controlling a period of time that a fluid is delivered to a patient. The timing device can control this period of time using a solenoid. The flow control device controls a rate of flow that the fluid is delivered to the patient. The flow control device can control the rate of flow using a plurality of orifices. The timing device and flow control device are separate from one another and each is capable of being operated independent of the other.12-11-2008
20100326442RESUSCITATION/RESPIRATION SYSTEM - A patient resuscitation/respiratory system includes a system control unit with a timer module controlling a plurality of air pressure modules. In an exemplary embodiment, the air pressure modules include a first air pressure module for controlling a first flow of pressurized gas from a first pressurized gas supply to an inflatable abdominal cuff, a second air pressure module for controlling a second flow of pressurized gas from the first gas supply to an inflatable chest cuff, and a third air pressure module for controlling a third flow of pressurized gas from the first gas supply to an inflatable leg cuff. The control unit in this embodiment includes a ventilator supply module for controlling a flow of breathable gas from a second pressurized gas supply to a patient ventilator module to periodically connect the patient ventilator module and the patient's lungs to the breathable gas supply. The timer module is configured to automatically cycle the plurality of air pressure modules to periodically inflate and deflate the cuffs in a resuscitation mode. The system control unit in a portable embodiment may be battery powered, and the gas supplies may be portable compressed gas cylinders.12-30-2010
20110023878Method And System For Delivering A Single-Breath, Low Flow Recruitment Maneuver - This disclosure describes systems and methods for delivering one or more low flow recruitment maneuvers to a patient while on a ventilator. Embodiments described herein provide methods for delivering low flow recruitment maneuvers wherein either or both of the inspiratory and expiratory phases of the recruitment maneuver are maintained by the ventilator at a low flow. Embodiments described herein provide for single-breath recruitment maneuvers and multi-breath recruitment maneuvers at low flow. Embodiments described herein provide for graphical display of a pressure-volume loop (PV loop) for both single-breath and multi-breath recruitment maneuvers. Embodiments described herein also disclose an automated ventilator functionality whereby recruitment maneuvers settings and/or post-recruitment maneuver settings for resuming prescribed ventilation may be set via a graphical user interface. Other embodiments described herein enable a clinician to configure the ventilator to synchronize the end the recruitment maneuver with patient-triggered inspiration for post-recruitment maneuver ventilation.02-03-2011
20100229863JET VENTILATION CATHETER, IN PARTICULAR FOR VENTILATING A PATIENT - The present invention relates to a catheter for ventilating a patient, with a ventilation channel for alternately delivering and removing air and/or oxygen to and from the patient's airways, the catheter having a maximum external diameter of at most 6 mm, mm, and the ventilation channel having an open end, and a connector end for connection to a gas flow reversing element. According to the invention, the catheter is provided with means or elements for measuring the pressure outside the ventilation channel near the open end. The catheter preferably has a pressure measurement channel, with an open measurement end near the open end of the ventilation channel, and a measurement connector piece for connecting a pressure display device. Of particular advantage is a catheter with an expansion body (cuff) that is fluidically connected to a supply channel through which the expansion body can be increased or reduced in size by means of a fluid. The jet ventilation catheter according to the invention permits a novel ventilation principle that can be regarded as a bridge between classical jet ventilation and conventional controlled ventilation and that opens up possibilities for new and improved interventions in the airways.09-16-2010
20120090610CHARACTERISATION OF MASK SYSTEMS - 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.04-19-2012
20120285455SMART CONNECTIONS - A mask for patient ventilation comprises a frame portion, a retention portion, and a connector portion. The frame portion is for surrounding a respiratory opening of a patient. The retention portion is for maintaining positive pressure between the frame portion and the patient. The connector portion is for connecting delivery tubes to the mask. The connector portion is configured such that the connector only couples with compatible components.11-15-2012
20130008444BREATHABLE GAS INLET CONTROL DEVICE FOR RESPIRATORY TREATMENT APPARATUS - A breathable gas inlet control device permits flow regulation at the inlet of a flow generator for a respiratory treatment apparatus such as a ventilator or continuous positive airway pressure device. The device may implement a variable inlet aperture size based on flow conditions. In one embodiment, an inlet flow seal opens or closes the inlet to a blower in accordance with changes in pressure within a seal activation chamber near the seal. The seal may be formed by a flexible membrane. A controller selectively changes the pressure of the seal activation chamber by controlling a set of one or more flow control valves to selectively stop forward flow, prevent back flow or lock open the seal to permit either back flow or forward flow. The controller may set the flow control valves as a function of detected respiratory conditions based on data from pressure and/or flow sensors.01-10-2013
20130008443SAFE STANDBY MODE FOR VENTILATOR - A ventilator with a safe standby mode is provided. The safe standby mode allows a user to disconnect a patient from the ventilator, without the ventilator generating alarms and while maintaining previously entered ventilation parameters. In addition, while in the safe standby mode, a patient connection status is monitored, and a ventilation mode is entered automatically if the ventilator determines that a patient is connected to the ventilator while the ventilator is in the safe standby mode.01-10-2013
20100139656CONTROL VALVE FOR RESPIRATORY DEVICES - The invention relates to a respiratory device for keeping a patient breathing artificially or support his or her breathing naturally. Said respiratory device comprises an air inlet, an air source, and at least one proportionally adjustable control valve. The control valve is provided with a housing (06-10-2010
20120240933PRESSURE SUPPORT SYSTEM WITH MASK FIT FEEDBACK DISPLAY - A pressure support system configured to deliver a pressurized flow of breathable gas to the airway of a subject is further configured to provide information to a user position, fit or seal between the subject and the patient interface through which the pressurized flow of breathable gas is delivered. Such information may include, for example, a location on the patient interface at which the integrity of the seal is compromised, adjustments that could be made by the subject to enhance the interface between the patient interface and the subject, different types and/or sizes of patient interfaces that could be used to enhance the fit and seal between the system and the subject, and/or other information.09-27-2012
20120240932BREATHING APPARATUS - An apparatus including a blower configured to provide a supply of breathing gas, and a delivery tube configured to deliver the supply of breathing gas to a user breathing interface. The delivery tube has an inside diameter of about 15 mm or less. The apparatus also including a control system configured to provide a control signal to the blower for controlling a pressure of the supply of breathing gas to between about 1 cm H09-27-2012
20080236581Method in a patient ventilating system - Method in a patient ventilating system to be used for example in awakening a patient at the end stage of an anesthesia procedure in which a carestation comprising an anesthesia machine is used. The method comprises the steps of setting a target value for the patient end tidal CO2 (EtCO2), and performing increase of the patient end tidal CO2 to the set target value by automatically using a ventilator in the anesthesia machine, and keeping blood oxygenation continuously at a safe level.10-02-2008
20080230062SETTING EXPIRATORY TIME IN MANDATORY MECHANICAL VENTILATION BASED ON A DEVIATION FROM A STABLE CONDITION OF EXHALED GAS VOLUMES - A method of setting expiratory time in controlled mechanical ventilation varies a subject's expiratory times; determines gas volumes exhaled by the subject per breath associated with the expiratory times; establishes a stable condition of the gas volumes; and determines an optimal expiratory time based on a deviation from the stable condition. A device for use in controlled mechanical ventilation comprises means for the same.09-25-2008
20080230060SETTING INSPIRATORY TIME IN MANDATORY MECHANICAL VENTILATION BASED ON PATIENT PHYSIOLOGY, SUCH AS WHEN TIDAL VOLUME IS INSPIRED - A method of setting inspiratory time in pressure controlled mechanical ventilation sets a subject's inspiratory time based on when the subject's tidal volume is inspired. Another determines when the subject's tidal volume is inspired and sets the subject's inspiratory time based on the determination.09-25-2008
20130167842METHODS AND SYSTEMS FOR ADAPTIVE BASE FLOW AND LEAK COMPENSATION - This disclosure describes systems and methods for providing adaptive base flow scheduling during ventilation of a patient to optimize patient-machine synchrony and accuracy of estimated exhaled as well as inhaled tidal volumes. Further, this disclosure describes systems and methods for providing adaptive inspiratory trigger threshold scheduling during the adaptive base flow scheduling. Further still, this disclosure describes systems and methods for determining an estimated leak flow and adjusting the adaptive base flow scheduling and the adaptive inspiratory trigger threshold scheduling based on the estimated leak flow. Moreover, this disclosure describes systems and methods for determining a change in the estimated leak flow and adjusting the adaptive base flow scheduling and the adaptive inspiratory trigger threshold scheduling based on the change in the estimated leak flow.07-04-2013
20130112202USER INTERFACE FOR BREATHING APPARATUS - A user interface for a breathing apparatuse has a contact-sensitive screen operable to cause a change in the operation of the breathing apparatus based on touch input from an operator. The contact-sensitive screen has a first touch area through which a breathing apparatus setting can be changed by the touch of the operator, and at least a second touch area at a distance from the first touch area. To avoid unintentional changes of the breathing apparatus setting, the user interface is configured such that the breathing apparatus setting can be changed only by touching the first and second touch areas simultaneously.05-09-2013
20130112203BLADDER CUSHION, FOREHEAD CUSHION, HEADGEAR STRAPS, HEADGEAR CAP AND/OR CHINSTRAP - A cushion for a patient interface includes two or more bladders arranged in concentric relation. Each of the bladders includes a face-contacting portion adapted to engage the patient's face, and each of the bladders is adapted to be pressurized independently from one another. At least one of the bladders is an active bladder that is pressurized to at least a sealing pressure to form a continuous seal with the patient's face in use.05-09-2013
20130092164POWERED AIR PURIFYING RESPIRATOR - A powered air purifying respirator (PAPR) for delivering a forced flow of filtered air to a wearer is disclosed. The PAPR comprises a turbo unit with turbo unit components including a fan, an electric motor, and an electronic control unit having a wireless electronic control transceiver, the fan being driven by the electric motor under the control of the electronic control unit and the electronic control unit being configured to send and receive information via the electronic control transceiver; a turbo unit power source that provides power to the turbo unit components; a turbo remote control unit having a wireless turbo remote control transceiver; at least one turbo status indicator unit, adapted to indicate a current operating status of the turbo unit and/or turbo unit components, having a wireless turbo status transceiver; wherein at least one of the turbo remote control unit and turbo status indicator unit is remote from the turbo unit, and wherein at least two of the electronic control transceiver, the turbo remote control transceiver and the turbo status transceiver are in wireless communication with each other.04-18-2013
20080202523SETTING MANDATORY MECHANICAL VENTILATION PARAMETERS BASED ON PATIENT PHYSIOLOGY - A method of setting inspiratory time in controlled mechanical ventilation varies a subject's inspiratory times; determines at least one or more of end tidal gas concentrations or gas volumes exhaled by the subject per breath or both associated with the inspiratory times; establishes a stable condition of at least one or more of the gas concentrations or the gas volumes or both; and determines an optimal inspiratory time based on a deviation from the stable condition. Similarly, a device for use in controlled mechanical ventilation comprises means for varying a subject's inspiratory times; means for determining at least one or more of end tidal gas concentrations or gas volumes exhaled by the subject per breath or both associated with the inspiratory times; means for establishing a stable condition of at least one or more of the gas concentrations or the gas volumes or both; and means for determining an optimal inspiratory time based on a deviation from the stable condition.08-28-2008
20080202522SETTING MANDATORY MECHANICAL VENTILATION PARAMETERS BASED ON PATIENT PHYSIOLOGY - A method of setting inspiratory time in controlled mechanical ventilation varies a subject's inspiratory times; determines gas volumes exhaled by the subject per breath associated with the inspiratory times; establishes a stable condition of the gas volumes; and determines an optimal inspiratory time based on a deviation from the stable condition. Similarly, a device for use in controlled mechanical ventilation comprises means for varying a subject's inspiratory times; means for determining gas volumes exhaled by the subject per breath associated with the inspiratory times; means for establishing a stable condition of the gas volumes; and means for determining an optimal inspiratory time based on a deviation from the stable condition.08-28-2008
20080202521SETTING MANDATORY MECHANICAL VENTILATION PARAMETERS BASED ON PATIENT PHYSIOLOGY - A method of setting inspiratory time in controlled mechanical ventilation varies a subject's inspiratory times; determines end tidal gas concentrations associated with the inspiratory times; establishes a stable condition of the gas concentrations; and determines an optimal inspiratory time based on a deviation from the stable condition. Similarly, a device for use in controlled mechanical ventilation comprises means for varying a subject's inspiratory times; means for determining end tidal gas concentrations associated with the inspiratory times; means for establishing a stable condition of the gas concentrations; and means for determining an optimal inspiratory time based on a deviation from the stable condition.08-28-2008
20080202520SETTING MANDATORY MECHANICAL VENTILATION PARAMETERS BASED ON PATIENT PHYSIOLOGY - A method sets a subject's expiratory time based on the subject's natural exhalation time, when the subject's natural exhalation flow ceases, and/or when the subject's tidal volume is expired. Another determines the subject's natural exhalation time, when the subject's natural exhalation flow ceases, and/or when the subject's tidal volume is expired, and sets the subject's expiratory time based on the determination. In addition, a flow rate sensor determines the subject's natural exhalation time, when the subject's natural exhalation flow ceases, and/or when the subject's tidal volume is expired, and bases the subject's expiratory time on the determination.08-28-2008
20080202519SETTING MANDATORY MECHANICAL VENTILATION PARAMETERS BASED ON PATIENT PHYSIOLOGY - A method of setting expiratory time in controlled mechanical ventilation sets a subject's expiratory time based on when the subject's tidal volume expires. Another method determines when the subject's tidal volume expires and sets the subject's expiratory time based on the determination. A device for use in controlled mechanical ventilation comprises a flow rate sensor configured to determine when a subject's tidal volume expires and bases the subject's expiratory time on the determination.08-28-2008
20080202518SETTING MANDATORY MECHANICAL VENTILATION PARAMETERS BASED ON PATIENT PHYSIOLOGY - A method of setting expiratory time in controlled mechanical ventilation sets a subject's expiratory time based on when the subject's natural exhalation flow ceases. Another method determines when the subject's natural exhalation flow ceases and sets the subject's expiratory time based on the determination. A device for use in controlled mechanical ventilation comprises a flow rate sensor configured to determine when a subject's natural exhalation flow ceases and bases the subject's expiratory time on the determination.08-28-2008
20080202517SETTING MADATORY MECHANICAL VENTILATION PARAMETERS BASED ON PATIENT PHYSIOLOGY - A method of setting expiratory time in controlled mechanical ventilation sets a subject's expiratory time based on the subject's natural exhalation time. Another method determines the subject's natural exhalation time and sets the subject's expiratory time based on the determination. A device for use in controlled mechanical ventilation comprises a flow rate sensor configured to determine a subject's natural exhalation time and base the subject's expiratory time on the determination.08-28-2008
20080196721QUICK CONNECT PRESSURE REDUCER/CYLINDER VALVE FOR SELF-CONTAINED BREATHING APPARATUS - A quick pressure reducer and cylinder valve for use with an SCBA includes a cylinder valve that connects to a pressure vessel, a pressure reduction assembly for reducing the pressure of breathing air provided by the pressure vessel, a probe, and an inlet/latch assembly. The probe includes a notch and a threadless probe tip, and the inlet/latch includes a corresponding receptacle and one or more latches adapted to fit into the notch to retain the probe in the receptacle. A pushbutton switch in the receptacle is triggered by insertion of the probe tip therein, thereby providing an electrical signal. Probes of different lengths may be used to correspond to different pressure capacities, and the inlet/latch assembly may be arranged either to permit the insertion of only probe size or may be arranged to accept both sizes but to function differently based on the size of the probe. The latches are inoperable except at or below a nominal pressure.08-21-2008
20080196720Mobile medical ventilator - A ventilatory system for providing ventilatory support to a patient without the need for an external source of pressurized drive gas. The ventilatory system comprises a drive pump and a controller such that the drive pump collects ambient air and may pressurize it to a pressure determined by the controller. The controller may signal to the drive pump to pressurize the collected ambient air to a first pressure for delivering ventilatory support to a patient and a second pressure for providing PEEP support to a patient. The controller may signal to the drive pump to deliver a targeted flow and/or volume of collected ambient air to the bellows to provide volumetric ventilatory support during inhalation and a PEEP support during exhalation.08-21-2008
20110220107INSUFFLATING-EXSUFFLATING SYSTEM09-15-2011
20100307498FLOW GENERATOR CHASSIS ASSEMBLY WITH SUSPENSION SEAL - A seal is provided for a chassis assembly of a flow generator configured to provide a flow of breathable gas. The chassis assembly includes an upper chassis and a lower chassis. The seal includes a blower receptacle sealing portion configured to seal a blower receptacle of the chassis assembly configured to receive a blower configured to generate the flow of breathable gas; a flow sensor sealing portion configured to seal a flow sensor provided in the chassis assembly and configured to measure the flow of breathable gas; a blower mount configured to receive a portion of the blower and mount the blower to the seal; and a blower mount suspension configured to connect the blower mount to the blower receptacle sealing portion, wherein in an assembled condition the seal and the chassis assembly define a flow path from an inlet of the chassis assembly to the blower receptacle of the chassis assembly to an outlet of the chassis assembly. A flow generator for generating a flow of breathable gas includes a chassis assembly comprising a lower chassis and an upper chassis, the lower chassis and the upper chassis defining a blower receptacle; a blower provided in the blower receptacle; and the seal.12-09-2010
20130125890BREATHING ASSISTANCE DEVICE WITH SEVERAL SECURE RESPIRATOR MODES AND ASSOCIATED METHOD - A breathing assistance device, capable of operating according to several respiratory modes forming a list of possible modes. The device is equipped with a mechanism for selecting a desired mode from a group of modes that can be selected. The device also includes a mechanism for realizing a configuration diagnostic of the device, a mechanism for associating with authorization level with each possible mode, according to the results of the diagnostic, with the lowest authorization level corresponding to unauthorized modes, a mechanism for authorizing only the selection of authorized modes, in such a way that selecting unauthorized modes is impossible.05-23-2013
20110308523AIR ON DEMAND BREATHING SYSTEM USING A DYNAMIC TRANSDUCER FOR CONTROLLING AIR - An air on demand breathing system using a dynamic transducer for controlling air is disclosed. As the compressor of the system only provides air within the hose line when a threshold has been reached as determined by the dynamic transducer battery consumption is extended as the battery does not have to provide power to the system at all times. A novel removal and replacement configuration for the one or more batteries of the system is also described.12-22-2011
20130186400VENTILATOR LEAK COMPENSATION - A ventilator including a pneumatic system for providing and receiving breathing gas, and a controller operatively coupled with the pneumatic system. The controller is operable to control circulation by the pneumatic system of breathing gas to and from a patient, and to adjust at least one of a volume and pressure of breathing gas delivered to the patient, such adjustment being based upon elastic properties of a component used to fluidly couple the pneumatic system to a patient.07-25-2013
20120017906BREATHING APPARATUS WITH COMPENSATION OF THE AMBIENT PRESSURE - A breathing apparatus includes a filter, a motor and a blower driven by the motor. The filter is disposed ahead of the blower and the blower is configured to generate an air volume flow over the filter. A data storage unit has calibration curves for the air volume flow stored therein and the calibration curves are provided in characteristic line fields referenced to a known ambient pressure (p01-26-2012
20120085348BREATHING ASSISTANCE DEVICE WITH LINEAR ACTUATED GAS REGULATING VALVE - A breathing assistance device includes a gas regulating valve (04-12-2012
20120085347SYSTEM AND METHOD FOR ENTRAINING THE BREATHING OF A SUBJECT - A respiration appliance (04-12-2012

Patent applications in class Electric control means

Patent applications in all subclasses Electric control means