An apparatus, system, and method for controlling tracheostomy weaning. The apparatus includes a lumen defining a flow path for air. The flow path is configured to communicate fluidically with an airway of a patient. A control valve coupled to the lumen is configured to automatically and selectively occlude the lumen to control a flowrate of the air passing through the lumen in real time based on respiratory data obtained from the patient.

PEEP-valves configured to be placed inline with the exhalation path of a ventilator and ahead of the exhalation valve. The PEEP-valve functions as a resistor that can provide a higher PEEP value for any given PIP, lung compliance, and respiratory rate combination compared to a standard PIP to PEEP ratio.

In accordance with the present invention, there is provided an adaptor or attachment which is suitable for integration into the patient circuit of a ventilation system, such as a non-invasive open ventilation system, is configured for attachment to any standard ventilation mask, and is outfitted with a jet pump which creates pressure and flow by facilitating the entrainment of ambient air. The adaptor comprises a base element and a nozzle element which are operatively coupled to each other. The base element further defines a throat and at least one entrainment port facilitating a path of fluid communication between the throat and ambient air. The nozzle element includes a jet nozzle, and a connector which is adapted to facilitate the fluid coupling of the nozzle element to a bi-lumen tube of the patient circuit. The connector includes both a delivery port and a sensing port. The jet nozzle and the delivery port collectively define a delivery line or lumen which fluidly communicates with the throat of the base element, and is placeable into fluid communication with the delivery lumen of the bi-lumen tube.

An exhalation valve arrangement includes an upstream breathing gas duct, which extends along a first duct path, a downstream breathing gas duct, which extends along a second duct path, and a valve assembly having a valve body and a valve seat, which valve assembly is provided such that, in the event of a predetermined first breathing gas overpressure in the upstream breathing gas duct relative to the downstream breathing gas duct. The valve assembly permits an exhalatory breathing gas flow from the upstream breathing gas duct to the downstream breathing gas duct and, in the event of a predetermined second breathing gas overpressure in the downstream breathing gas duct relative to the upstream breathing gas duct, the valve assembly blocks a gas flow from the downstream breathing gas duct to the upstream breathing gas duct.

A flow controller can include a conduit wall and a membrane coupled to the conduit wall. The membrane is configured to obstruct gas flow through the conduit. The flow controller includes a membrane controller, positioned adjacent to the membrane, wherein the membrane is positioned on one side of the membrane controller, such that the membrane controller impedes bending of the membrane in a second direction different from the first direction, thereby restricting gas flow through the conduit.

A resuscitation bag system (1) useable for resuscitating a person in cardiac arrest, and having a gas control unit (90) with a first valve (92) fluidly connected to a first (922) and to a second conduit (923), the first (922) and second conduits (923) being arranged in parallel and further fluidly connected to the first conduit element (56), the first conduit (922) having a first flow restriction (924) configured for limiting the gas flow to a first flowrate, and the second conduit (923) comprising second flow restriction (925) configured for limiting the gas flow to a second flowrate, with the second flowrate being less than the first flowrate.

A respiration valve (100) and breathing machine having same; the respiration valve (100) comprises a valve body (1), an air resistor (2), a stainless steel valve port (3), a diaphragm (4) and valve bonnet (5); the valve body (1) is formed with an air intake channel (101) and an air output channel (102) connected to the air intake channel (101), and the air intake channel (101) has an air inlet (103) and an air outlet (104); the air resistor (2) is disposed in the air intake channel (101); the stainless steel valve port (3) is provided at the air outlet (104) of the air intake channel of the valve body (1), and one end of the stainless steel valve port (3) extends out of the air outlet (104) of the air intake channel of the valve body (1); the diaphragm (4) is movably disposed on the valve body (1) between the open and close positions of the stainless steel valve port (3); the valve bonnet (5) is disposed on the valve body (1), and cooperates with the valve body (1) to press against the edge of the diaphragm (4); and the valve bonnet (5) is provided with a through hole (501) thereon. The respiration valve (100) improves the sealing property of the diaphragm (4) and the stainless steel valve port (3), ensures accurate and reliable opening and closing of the valve port (3), and can precisely calculate the moisture volume inhaled and exhaled by the respiration valve (100).

A breathing circuit for use in conjunction with a ventilator serving a mechanically-ventilated patient includes an expiratory gas airflow pathway; an inspiratory gas airflow pathway; and a gas mixing mechanism operable to mix inspiratory gas and expiratory gas in an amount sufficient to equilibrate the patient's PETCO.sub.2 and arterial PCO.sub.2 such that the patient's PETCO.sub.2 is a clinically reliable approximation of the patient's PaCO.sub.2.

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.

A ventilator system for providing respiratory support in cases of acute respiratory failure or severe trauma is described. The ventilator system comprises a ventilator and a tubing system. The system is characterized in that the ventilator comprises a continuous bleed valve configured to be open to air flow from the blower at all times when the blower is operating during both inspiration and expiration; thereby providing a minimal amount of pressure within a patient's lungs at the end of each exhalation—positive end expiratory pressure (PEEP). In an embodiment of the invention the system comprises a manifold block configured to hold the main operating elements of ventilator.