A resuscitation bag (bag valve mask resuscitator or BVM or BVMR) or other similar ventilation device (for example: anesthesia bag) includes a structure that allows a selectable, and repeatable volume be delivered to patients. The reservoir of the BVMR is formed from elastic, gastight material in the form of an elongated hollow body, with an essentially circular cross section. A range of motion control (ROMC) structure controls, or selectively limits the range of motion or collapse of the elastic bag to limit or control the volume expelled from the bag to the patient.

The invention concerns a manual resuscitation bag having a first PEP exhaust valve (4) arranged in a first conduit element (3) and fluidly communicating with the ambient atmosphere for venting gas to the atmosphere when the gas pressure, into the first conduit element (3), exceeds a given pressure threshold. The first PEP exhaust valve (4) has a valve body (5) and a calibration mechanism (6, 12; 7-10) for setting a desired pressure threshold. The calibration mechanism (6, 12; 7-10) is a rotatable member (6), actuatable by a user, arranged on the valve body (5) and cooperating with a pressure adjusting device (7-10) arranged into the valve body (5), and a support member (12) comprising several markings (11) corresponding to several settable pressure values, arranged between the rotatable member (6) and the valve body (5).

The invention concerns a manual resuscitation bag having a first PEP exhaust valve (4) arranged in a first conduit element (3) and fluidly communicating with the ambient atmosphere for venting gas to the atmosphere when the gas pressure, into the first conduit element (3), exceeds a given pressure threshold. The first PEP exhaust valve (4) has a valve body (5) and a calibration mechanism (6, 12; 7-10) for setting a desired pressure threshold. The calibration mechanism (6, 12; 7-10) is a rotatable member (6), actuatable by a user, arranged on the valve body (5) and cooperating with a pressure adjusting device (7-10) arranged into the valve body (5), and a support member (12) comprising several markings (11) corresponding to several settable pressure values, arranged between the rotatable member (6) and the valve body (5).

Systems and methods are provided for anesthetic agent level sensing. In one embodiment, a system for a level sensor for an anesthetic vaporizer includes a measurement tube including a float positioned therein, a bottom portion of the measurement tube coupled to a cap having a central opening, a retaining bracket coupled to a top portion of the measurement tube, an optical sensor housed within the retaining bracket, the optical sensor including a light source positioned to emit light toward an interior of the measurement tube and a light detector positioned to receive light from the interior of the measurement tube, and an optical window housed within the retaining bracket and coupled between the optical sensor and the interior of the measurement tube.

A device and method of generating an enriched gas within a nasal vestibule of a patient includes a housing, a chamber, a chamber inlet, a pump, a molecular sieve bed, a release outlet, and a breath duct. The chamber is configured to be received within the nasal vestibule. The pump is configured to direct an ambient air from an ambient environment into the chamber. The molecular sieve bed is positioned within the chamber and configured to collect a predetermined molecule from the ambient air thereby generating the enriched gas. The release outlet is configured to discharge the enriched gas from the chamber into the nasal vestibule. The breath duct longitudinally extends through the housing such that the breath duct is configured to fluidly communicate a fluid flow through the housing for nasal breathing by the patient while the chamber is positioned within the nasal vestibule.

An apparatus and method for providing a nebula or aerosol to a patient is described. In one aspect, the nebulizer is composed of a minimum number of parts to reduce complexity for automated or human assembly. The nebulizer may include an inhalation valve, exhalation valve and biasing member integrated into a single diaphragm structure that may be connected with an actuator and inserted into a housing for controlling nebulization of a medicine to a patient in response to the patient's breathing or in a continuous nebulization mode.

An apparatus and method for providing a nebula or aerosol to a patient is described. In one aspect, the nebulizer is composed of a minimum number of parts to reduce complexity for automated or human assembly. The nebulizer may include an inhalation valve, exhalation valve and biasing member integrated into a single diaphragm structure that may be connected with an actuator and inserted into a housing for controlling nebulization of a medicine to a patient in response to the patient's breathing or in a continuous nebulization mode.

An oscillating positive expiratory pressure system including an oscillating positive expiratory pressure device having a chamber, an input component in communication with the chamber, wherein the input component is operative to sense a flow and/or pressure and generate an input signal correlated to the flow or pressure, a processor operative to receive the input signal from the input component and generate an output signal, and an output component operative to receive the output signal, and display an output.

Various embodiments of a metered dose inhaler that includes a metering valve are disclosed. The inhaler includes a reservoir containing a pressurized formulation of medicament and carbon dioxide. The metering valve includes a metering chamber, a metering valve stem, and a metering valve stem seal having an opening through which the metering valve stem passes to form a dynamic seal between the metering valve stem and outside atmosphere. The metering valve stem seal has a Shore D hardness of 45 to 80 and its opening is adapted to be stretched wider by the metering valve stem passing through it than it would be absent the valve stem.

A patient interface comprises a seal-forming structure including a textile membrane and a support structure to support the textile membrane. The seal-forming structure may have a varying construction in order to accommodate different regions and the varying contours of the patient's face to ensure a robust and comfortable seal. An air impermeable layer of the textile membrane may have a thickness that varies in different portions of the textile membrane and/or different regions of the cushion assembly. Further, the seal-forming structure may include an underlying cushion, and an arrangement of the textile membrane and the underlying cushion and/or the configuration of the underlying cushion may vary in different regions of the cushion assembly to optimize patient comfort and the effectiveness of the seal in different regions of the patient's face.