The invention provides an anesthesia machine comprising a driving gas branched path, a fresh gas branched path, and a breathing circuit. The fresh gas branched path delivers fresh gas having anesthetic into the breathing circuit. The driving gas branched path drives fresh gas from the breathing circuit to a patient. The driving gas branched path comprises a fan assembly, which comprises a housing, a fan, and a heat-dissipating member. The fan is disposed in a first inner chamber, and drives air into the first inner chamber. The heat-dissipating member conducts to the housing the heat generated by the motor.

The present invention generally relates to systems and method for delivery of therapeutic gas to patients in need thereof using enhanced breathing circuit gas (BCG) flow measurement. At least some of these enhanced BCG flow measurements can be used to address some surprising phenomena that may, at times, occur when wild stream blending therapeutic gas into breathing gas that a patient receives from a breathing circuit affiliated with a ventilator. Utilizing at least some of these enhanced BCG flow measurements the dose of therapeutic gas wild stream blended into breathing gas that the patient receives from a ventilator can at least be more accurate and/or over delivery of therapeutic gas into the breathing gas can be avoided and/or reduced.

Systems and methods for generating nitric oxide are disclosed. A nitric oxide (NO) generation system includes at least one pair of electrodes configured to generate a product gas containing NO from a flow of a reactant gas; and a controller configured to regulate the amount of nitric oxide in the product gas produced by the at least one pair of electrodes by utilizing duty cycle values of plasma pulses selected from a plurality of discrete duty cycles to produce a target rate of NO production based on an average of discrete production rates associated with each of the plurality of discrete duty cycles.

An HME device, used in a closed breathing circuit of a ventilation system, has a housing with an inlet opening and with an outlet opening, an HME chamber (50a; 50b; 50c; 50d; 50e; 50f; 50g; 50h; 50i) arranged between the inlet opening and the outlet opening for receiving an HME medium and a switching mechanism (70a; 70b; 70c; 70d; 70e; 70f; 70g; 70h; 70i). The HME device can be switched over between an HME mode (M1), in which an HME fluid passage is provided from the inlet opening through the HME chamber to the outlet opening, and a bypass mode (M2), in which a fluid bypass passage is provided from the inlet opening past the HME chamber through a bypass channel (80a; 80b; 80d; 80e; 80f; 80h) in the housing to the outlet opening. The bypass channel is blocked with respect to the HME chamber in the bypass mode (M2).

An apparatus and method for providing heat exchange in the lungs of the mammal during partial liquid ventilation are provided. The apparatus and method can control delivery and removal of partial liquid ventilation to the lungs of a mammal by responding to pressure change in the lungs to minimize danger of causing barotrauma to the patient.

A patient ventilator system includes a patient delivery circuit having an inspiratory section that delivers an inspiratory gas flow to a patient and an expiratory section that receives expiratory gas flow from the patient, wherein a bidirectional blower motor drives the inspiratory gas flow in the inspiratory section and controls the expiratory gas flow in the expiratory section. A flow sensor measures gas flow rate between the bidirectional blower motor and the patient delivery circuit. A four quadrant controller is configured to control speed and direction of the bi-directional blower motor based on the measured flow rate so as to effectuate ventilation for the patient.

A moisture management system for a medical device. A water trap has an inlet, outlet, first reservoir, and drain, the inlet receiving gas from a supply connection and the outlet returning the gas to a patient connection. The water trap removes moisture from the gas flowing from the inlet to the outlet, where the moisture removed is held in the first reservoir. The system further includes an evaporation chamber having an inlet, an exhaust, and a second reservoir. The inlet is fluidly coupled to the drain of the water trap to receive the moisture from the first reservoir. The moisture is subsequently held in the second reservoir. The evaporation chamber is configured such that the moisture evaporates from the second reservoir and exits as vapor via the exhaust. An evaporator increases a rate at which the moisture in the second reservoir evaporates via the exhaust.

Disclosed is an anesthetic gas distribution device capable of being easily adjusted to conform to various conditions of a sample. An anesthetic gas distribution device according to an embodiment of the present invention includes a manifold block including a main block and one or more sub-blocks coupled to one side or two opposite sides of the main block so as to be separable in a first direction, the manifold block being configured to be supplied with the gas from the outside, and supply nozzles connected to the manifold block in a second direction perpendicular to the first direction and configured to supply the gas to the sample.

The present invention relates to an adapter for non-invasive mechanical ventilation probes with an inhalation port and orifice occluder. Specifically, the invention comprises a probe adapter with an inhalation port and orifice occluder, coupled to the oronasal mask disposed on a user or patient. According to the present invention, the probe adapter also receives a metered dose inhaler that further receives an anesthetic circuit with two enteral probes, a left enteral probe and a right enteral probe. The technical field of the invention belongs to the field of medical devices for respiratory therapy, for use in patients with assisted non-invasive mechanical ventilation and concomitant use of enteral probes with the requirement of metered dosage inhaled medicinal products.

A ventilator (1), for ventilating the lungs of a patient with breathing air, includes a ventilation module (2) for generating a breathing air flow, a determination module (3) for determining a first ventilation parameter as well as a different second ventilation parameter of the ventilator, and a control module (4) for controlling the ventilator as a function of the determined first and/or second ventilation parameter. The control module is configured to reduce the first ventilation parameter automatically over an analysis period including at least one breathing cycle. A classification module (5) is configured to classify a pulmonary status of the lungs of the patient based on a change in the second ventilation parameter, which change was brought about by the automatic reduction of the first ventilation parameter. A process is further provided for ventilating the lungs of a patient with breathing air with a ventilator (1).