An anesthesia ventilator, for the automated ventilation of a patient, includes an expiratory port and an inspiratory port for connecting a patient ventilation tube for a breathing gas, a breathing gas delivery unit, a breathing gas volume flow sensor, a breathing gas sensor for detecting a carbon dioxide concentration, a pressure sensor for detecting a pressure of the breathing gas, and a computer. The computer is configured to actuate the breathing gas delivery unit in a first mode of operation as a function of a preset ventilation rate, of the detected pressure and of a preset desired pressure value. The computer is configured to detect the presence of a desired operating state concerning the automated ventilation on the basis of the detected volume flow and of the detected carbon dioxide concentration and to make possible a transition to a second mode of operation in case of detection.

In a method and system of regulating multiple anesthetic agents in a breathing circuit of an anesthetic breathing apparatus is disclosed, a primary anesthetic agent added to the breathing circuit is regulated to a set desired value of the amount of the primary anesthetic agent, and a secondary anesthetic agent in the breathing circuit is regulated to an amount of said secondary anesthetic agent that it is equal to or less than a defined threshold level, e.g. of the concentration, of the secondary anesthetic agent.

A system for collecting an anaesthetic agent, having at least one anaesthetic gas scavenging system (AGSS) for receiving exhaust gas from a plurality of sources, the exhaust gas including the anaesthetic agent to be collected, each AGSS comprising at least one power source for providing suction of the exhaust gas from the plurality of sources under negative pressure, and a central collection system for receiving the exhaust gas, the central collection system comprising at least one collector for collecting the anaesthetic agent from the exhaust gas, wherein the at least one collector is configured to adsorb the anaesthetic agent from the exhaust gas. The central collection system may be configured to received the exhaust gases from the at least one AGSS, with the central collection system being located downstream of the at least one AGSS.

The present invention relates to a device adapted to be worn on a user's head to aid sleeping. The sleeping aid device comprises: a head strapping; a nose and mouth mask; and electronic apparatus to detect trigger events for reducing or increasing the oxygen in a supply of air to the wearer of the mask.

The invention relates to a face mask arrangement for alternately administering a gas I containing nitrous oxide and a gas II devoid of nitrous oxide to a patient, comprising a face mask, two inlet flow lines I and II for gas I and a gas II, respectively, which flow lines end in a breathing interface, and an outlet flow line for evacuation of exhaled gas. The two inlet flow lines merge into a common inlet part. Each of the inlet flow lines I and II comprises an inlet valve I and II, each of which is capable of opening in response to inhalation and of closing in response to exhalation. The arrangement comprises a switching means enabling switching between inhalation through inlet flow line I and inlet flow line II depending on the patient's immediate need of gas I or gas II. The invention relates also to a system comprises the face mask arrangement and an apparatus for collecting inhalation air from patients inhaling gas containing nitrous oxide and to the use of the face mask arrangement for administration of nitrous oxide to a patient via inhalation and collecting nitrous oxide from exhaled air of a patient during the administration.

A respiratory component measurement system that includes an airway adapter adapted to be placed in fluid communication with an airway of a patient and a sensor element in physical communication with the airway adapter. The sensor element is adapted to detect an orientation related characteristic of the airway adapter, a motion related characteristic of the airway adapter, or both. A respiratory component sensor is also adapted to be disposed on the airway adapter so as to measure a characteristic associated with a flow of gas through the airway adapter.

Described here are closed-circuit breathing devices and methods for their use. In general, the closed-circuit breathing device is configured to achieve a steady-state equilibrium, whereby therapeutic gas is introduced into the breathing circuit in small, controlled volumes until a steady state concentration of the therapeutic gas is reached. During this time, the closed-circuit breathing device is operated in a true closed circuit, such that the therapeutic gas is not lost to the atmosphere. Safety measures are built into the closed-circuit breathing device so that a hypoxic mixture is not delivered to the subject. The therapeutic gas may be xenon.

Systems and methods are provided for anesthetic agent level sensing. In one embodiment, a system for an inductive level sensor for an anesthetic vaporizer includes a measurement target positioned around a rod that extends within a chamber configured to hold liquid anesthetic agent, the rod configured to be at least partially submerged in the liquid anesthetic agent and the measurement target configured to slide vertically along a length of the rod and rest on a surface of the liquid anesthetic agent, and a strip of inductive transmitter coils and receiver coils positioned external to the chamber, a length of the strip aligned with the length of the rod, the transmitter coils configured to generate a magnetic field that surrounds the rod and the measurement target and the receiver coils configured to sense changes in the generated magnetic field at a vertical location of the measurement target on the rod.

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 process (10), with a computer program, a device (30) and a ventilation system (40) detect a leak in a patient gas module, which suctions and analyzes a continuous sample gas stream from a ventilated patient (20), in a ventilation system for ventilating a patient (20). The process includes a determination (12) of a first time curve of a carbon dioxide concentration in a breathing gas mixture of the patient (20) and the determination (14) of a second time curve of a concentration of another gas in the breathing gas mixture, which gas is different from carbon dioxide. The process (10) further includes a determination (16) of a statistical similarity indicator between the first time curve and the second time curve and the detection (18) of the leak based on the similarity indicator.