A nasal adaptor includes: an oral expiration guiding portion which has an opposing portion that is to be opposed to the mouth of a living body, and in which a mouth-side guide path that guides expiration that is expired from the mouth to the opposing portion is formed; and an attaching portion which is placed above the oral expiration guiding portion with respect to the living body, and to which a holding member that holds a sensor for measuring the expiration guided by the oral expiration guiding portion is attached. The oral expiration guiding portion is integrally connected to the attaching portion, and has positioning changing portions that change the distances between connecting portions connected to the attaching portion, and the opposing portion, thereby changing the positioning of the opposing portion.

The present invention discloses a non-hysteretic oxygen supply respirator system, comprising a respiratory mask, an inhaling pipe, an exhaling pipe, an oxygen supply chamber, an auxiliary oxygen supply pipeline, and a start-stop cylinder for opening and closing the auxiliary oxygen supply pipeline. The non-hysteretic oxygen supply respirator system in the present invention supplies a small amount of oxygen during the second half of exhaling by providing the auxiliary oxygen supply pipeline, so as to compensate for the amount of oxygen required by a user during the hysteretic time after the respirator senses the inhaling airflow, avoid the situation that the user inhales laboriously due to the hysteresis of inhaling oxygen supply, and give the user a better respiratory experience. The start and stop of the auxiliary oxygen supply pipeline are controlled by the airflow of the exhaling pipe, making the control simple and convenient and the exhaling smoother.

The systems and methods include providing, displaying, and/or utilizing leak estimation during ventilation of a patient with a ventilator. The systems and methods include providing, displaying, and/or utilizing internal leak estimation, total leak estimation, and/or external leak estimation during ventilation of a patient with a ventilator.

A personalized drug delivery apparatus comprising drug containing means; a spout configured to receive full lung exhalation; a mechanism configured to determine a personalized drug dosage according to the exhalation, the spout further configured to enable inhalation of the determined dosage.

A method for measuring the anesthetic agent consumption in a ventilation system has a breathing circuit which contains a gas mixer (1) and an anesthetic agent metering device (2). The anesthetic agent quantity, which is consumed over a pregiven time interval in the ventilation system, is determined from the sum of the determined anesthetic gas volume flows in the ventilation system which are integrated over the pregiven time interval.

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.

The invention relates to a respiratory assistance apparatus (1) usable by a first responder, such as a doctor from the emergency ambulance service, a fire fighter, a nurse or the like, when this first responder is performing cardiac massage on an individual (20) in cardiopulmonary arrest, in order to ventilate the said individual while he or she is being subjected to chest compressions. According to the invention, the respiratory assistance apparatus (1) comprises signal processing means designed to supply the display means with a corrected frequency value (F.sub.c) corresponding to the frequency value (F) determined immediately before the start of a time of duration (Dh, Db) considered, when the signal processing means do not detect a chest compression (CC) for part of the said duration (Dh, Db) considered.

The embodied invention is a new inspiration/expiration ventilator flow design, with a constant inspiration flow and intermittent-concurrent expiratory flow based on lung pressure setpoints. This mode is possible by using a new dual lumen tube inserted into a patient Trachea. Additionally, the control provides support for patient initiated breathing which is initiated by a lung pressure drop. This control provides continuous and gentle recruitment of lung alveoli.

Various spirometer-inhaler systems and devices are disclosed. The spirometer-inhaler system may estimate physiological parameters of a user based on the user's inhaled and/or exhaled breaths received by the spirometer-inhaler device. The spirometer-inhaler device may comprise one or more flow paths. A first flow path may direct medication from a medicine canister to an opening of the device. A second flow path may direct a user's exhaled breath from the opening of the device to one or more flow measurement devices.

A device provides a first data signal that indicates an activity of at least one muscle of a patient that is relevant for an inspiratory breathing effort and a second data signal that indicates an activity of at least one muscle of the patient that is relevant for an expiratory breathing effort. The data signals are generated from electromyography (EMG) signals detected by surface electromyography sensors. A computer is configured to determine breathing phase information on the basis of a breathing signal and to check at least one of the electromyography signals or at least one of the separated signals for detectability of a heart signal component and further to assign the signals to an inspiratory breathing activity as well as to an expiratory breathing activity of the patient as a function of the breathing phase information.