Methods and systems are provided for anesthetic agent leakage diagnostics. In one embodiment, a method for diagnosing leaks in an anesthetic vaporizer includes calculating a leakage rate based on measurements of an anesthetic agent level in a sump of the anesthetic vaporizer, the measurements received from a fluid level sensor at a first time and a second time, and outputting a maintenance alert responsive to the leakage rate exceeding a threshold.

A resuscitator mouth shield assembly for protecting a caregiver from bodily fluids during CPR includes a resuscitation bag that has a hose extending toward a face cup. A coupler releasably engages the resuscitation bag and a panel is rotatably coupled to the coupler. The panel is spaced from the resuscitation bag when the coupler is positioned on the resuscitation bag. Moreover, the panel is positioned between a patient's face and a caregiver when the resuscitation bag is positioned on the user's face. In this way the panel inhibits bodily fluids that are expelled from the patient from contacting the caregiver.

An apparatus for delivering a flow of gas having: a controller; a housing defining a gas-flow passage flowing a high concentration oxygen gas; a motor with windings, resilient bearing mounts and an impeller to deliver the gas through the gas-flow passage; a flexible printed circuit electrically connecting the motor to the controller and sensor system; and an elastomeric shield to pneumatically isolate the windings from the gas-flow passage.

A resuscitator mouth shield assembly for protecting a caregiver from bodily fluids during CPR includes a resuscitation bag that has a hose extending toward a face cup. A coupler releasably engages the resuscitation bag and a panel is rotatably coupled to the coupler. The panel is spaced from the resuscitation bag when the coupler is positioned on the resuscitation bag. Moreover, the panel is positioned between a patient's face and a caregiver when the resuscitation bag is positioned on the user's face. In this way the panel inhibits bodily fluids that are expelled from the patient from contacting the caregiver.

A disinfection system is provided. The disinfection system may utilize ultraviolet light and/or ozone for disinfection of infected tissue. For example the system may involve an endoscopic ultraviolet light to disinfect lung tissue. In another aspect, the system may involve a ventilator which provides ozone in small doses to disinfect the tissue. Combinations and variations are further disclosed.

A healthy gas generating system for generating healthy gas for inhalation by a user includes an electrolysis device, a gas mixing device, and a backfire barrier. The electrolysis device electrolyzes water to generate a gas with hydrogen. The gas mixing device includes a mixer and a vibrator for mixing the combination gas with an atomized gas to produce the healthy gas. The backfire barrier is configured on the output of the gas mixing device or the gas passage of receiving the combination gas to avoid the backflow of the gas.

A gas flow arrestor is provided that is configured to be coupled at one end to an oxygen concentrator, a VIPR type device associated with a compressed gas cylinder, or other gas delivery component such as a regulator or flowmeter and at the opposing end to a length of flexible tubing or hose that delivers the medical gas to the patient or patient breathing apparatus, such as a nasal cannula or breathing mask. The gas flow arrestor device includes a firebreak together with a visual flow indicator that is actuated by the flow of gas through the gas flow arrestor device. The visual flow indicator allows a user or patient to visually confirm from a distance whether or not gas is flowing to the patient or breathing apparatus.

The invention relates to a medical gas supply device that supplies hydrogen gas to inhalation gas, including: an inhalation gas path that is connected to an inhalation line on an artificial respirator side; a hydrogen gas introduction path that is connected to a hydrogen gas supplier; a merging point where these two paths merge; a tank that is provided downstream of the merging point, includes a gas inlet and a gas outlet, has a diameter larger than that of the inhalation gas path, and mixes inhalation gas and hydrogen gas to form a mixed gas; a mixed gas supply path that connects the gas outlet and a patient-side inhalation line; a flow meter that is provided in the inhalation gas path; a flow rate controller that is provided in the medical gas introduction path; and a control unit that is connected to the flow meter and the flow rate controller.

A system and method for reducing the risk of fire in an oxygen delivery system. The system may include an oxygen delivery device with a controller in communication with a flow control valve to control a flow of oxygen through a tubing from an oxygen source to a patient interface. The controller may be programmed to close the flow control valve for a predetermined time period at a predetermined time interval to cause a periodic oxygen pause, the periodic oxygen pause to remove oxygen that may serve as an oxidizer when a fire is present inside at least one of the patient interface and the tubing.

The invention relates to a breathing assistance apparatus that may be configured to reduce the risk of damage to electronics within the apparatus as a result of liquid leaks within the apparatus or impacts to the apparatus. In other forms, the apparatus may be configured to allow for easy assembly and/or safe operation.