The invention relates to a device (1) for supplying therapeutic gas, in particular NO/N2 mixtures, comprising an internal passage (2), valve means (5), control means (6) with microprocessor, and selection means (8), which can be actuated by a user and are configured to allow the user to start a supply of gas or stop a supply of gas. The selection means (8) supply the control means (6) with a command signal corresponding to the choice made by the user, in order to control, via the valve means (5), the flow of gas in the internal passage (2), i.e. to authorize or stop any flow of gas. The control means (6) count a total duration of actual supply of gas equal to the sum of all the time periods elapsing between a choice, made by the user, of starting a supply of gas and a choice, made by the user, of stopping a supply of gas. Installation for administering gas to a patient, which includes such a gas supply apparatus.

An anesthetic delivery system for use in conjunction with an anesthetic return system for reutilizing anesthetic exhaled by a subject, the system including a measurement system operatively connected to a breathing circuit for continuously measuring at least one flow parameter and anesthetic content of a gas stream reaching the subject and a control system for receiving input from the measurement system and controlling the amount of anesthetic entering the system, the control system including an input device for inputting a setting that corresponds to a desired amount of anesthetic in the gas stream reaching the subject, and utilizing a control algorithm for controlling the amount of anesthetic entering the system based on said desired amount of anesthetic, and flow and anesthetic content parameters as determined by the measurement system, such that the control algorithm is adapted to supplement anesthetic already in gas stream flowing to the subject to attain a level of anesthetic reaching the subject that correspond to the desired amount set via the input device.

A CPAP device includes a flow generator comprising a motorized fan with an outlet. The motorized fan is configured to pressurize a supply of gas. The flow generator further comprises a flow generator outlet in communication with and offset from the motorized fan outlet and comprises a connector configured to receive the pressurized supply of gas from the flow generator, the connector being in communication with the flow generator outlet and positioned downstream of the motorized fan outlet. The connector comprises an attaching portion at a first end, the attaching portion configured to be coupled to the flow generator. The connector also comprises a flexible sealing portion at a second end opposite the first end, the flexible sealing portion comprising a bellows-type conforming face seal that is axially and/or laterally flexible. In addition the connector comprises a channel provided between the attaching portion and the flexible sealing portion for delivering the pressurized supply of gas from the first end of the connector to the second end of the connector.

A stabilizer arm for a BVM resuscitator and method of use is disclosed. The stabilizer arm provides the necessary support to the reservoir bag to enable the user to exert downward pressure on the BVM resuscitator while simultaneously squeezing the reservoir bag, and creates force that is focused, directed, and realized at the mask of the assembly. Due to the presence of the stabilizer arm, this pressure pushes the facial mask downward to assist in forming a tight mask to face seal. The stabilizer arm may be internal, external or integrated into the reservoir bag wall of the BVM resuscitator and may be retro-fitted or original equipment manufactured. The external stabilizer arm may be designed to engage the outlet port neck of the BVM resuscitator with an open collar or a closed collar. The internal stabilizer arm may be configured to fit BVM resuscitators having single piece or multiple piece outlet valve design.

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.

Pulmonary ventilator methods and systems are provided winch include a housing having a user interface control panel; a pneumatic circuit for delivering a high frequency pressure wave from the housing to a patient lung; a variable volume disposed within the housing including a stationary plate secured to the housing and a reciprocating plate pivotably mounted with respect to the stationary plate; and a magnet assembly disposed within the housing and configured to pivot the reciprocating plate. The variable volume may also include a resiliently contractible section extending between and joining a portion of the stationary plate and a portion of the reciprocating plate, wherein the resiliently contractible section may be in the form of a bellows and/or a pleated material.

A gas flow valve assembly. The assembly includes a cylindrical housing and a resiliently-biased valve supported substantially centrally within the housing. In the default or off condition, the resilient bias causes the valve to be seated on a valve seat shutting off axial flow of gas through the valve housing. When the patient breathes, negative pressure is applied to one side of the valve effective to sufficiently overcome the resilient bias imposed on the valve to move the valve off the valve seat axially (or otherwise open in another direction) within the housing, thereby allowing flow of gas through both the valve seat and the valve housing, and into the breathing circuit connected thereto. When the patient's breathing pauses and begins to exhale, the valve bias returns the valve to its default or off condition shutting off flow of gas through the valve.

Disclosed are systems and processes related to cardiopulmonary resuscitation (CPR). One embodiment of the system comprises an inspiration chamber and an expiration chamber, which work cooperatively to provide gas (e.g., Oxygen (O.sub.2)) to a subject (e.g., human patient) during inspiration and extract and expel expired gas (e.g., Carbon Dioxide (CO.sub.2)) from the subject during expiration as a medical professional applies CPR to the subject. In other words, this disclosure provides systems and processes that allow for substantially synchronous chest compressions with positive pressure active inspirations and, also, substantially synchronous chest decompressions with negative pressure active expirations.

A medical vaporizer is provided. In one embodiment, dual-purpose sensors are employed, such as in a configuration in which one is positioned in the mixed gas flow channel and one is positioned in the main gas flow channel. The sensors provide measurements that may be used to determine both gas flow and gas concentration in the mixed and main gas channels, even when the identity and/or properties of the gas in the main gas channel are unknown. The measurements derived from the dual-purpose sensors may be used to measure and report the total anesthetic being delivered at the vaporizer output and/or improve vaporizer accuracy.

A ventilator uses teeth of gear to operate up to eight or more bellows. A common drive shaft can be used to operate a stack of multiple such gears, which collectively operate up to 40 or more bellows. Valves can be used to control flow from different ones of the bellows to individual recipients.