A portable, handheld measurement device for monitoring lung function is provided. The measurement device includes one or more components designed to directly or indirectly detect air flow properties such as the direction, flow rate, and/or volume of air flow within a lumen of the device. In some embodiments, the air flow properties are determined from changes in pressure within the lumen. The measurement device may form part of a system that includes a remote computing device and a computer server. In some such embodiments, at least one of the computers present within the system calculates spirometry measurements from the air flow detected within the measurement device. Such measurements may be stored, displayed, and/or shared with others. Various methods performed by the devices and systems are also disclosed.

An undermold coupling to couple a hose to a hose fitting includes: a tubular portion to be inserted into a hose interface of the hose fitting; threads formed on an inner surface of the tubular portion to engage a support helix on an end of the hose as a set of threads; and a first grating comprising a first plurality of elongate portions to intermesh with a corresponding second plurality of elongate portions of a second grating of the hose interface, wherein the first plurality of elongate portions extend into a second plurality of slots defined by the second plurality of elongate portions, and the second plurality of elongate portions extend into a first plurality of slots defined by the first plurality of elongate portions.

Connectors for respiratory assistance systems are disclosed that are configured to at least decrease the proportion of condensate that drains into an inspiratory conduit. The connectors include a setup that causes the portion of a wye-piece connected to an expiratory conduit to be positioned below the portion of the wye-piece connected to the inspiratory conduit. The connector can alternatively, or additionally, include a wye-piece that includes a ball attached to the wye-piece adjacent the inspiratory conduit port such that when the ball is connected to a medical stand, the expiratory conduit port is positioned below the inspiratory conduit port. The connector can alternatively or additionally include a circuit hanger that includes a cradles for both conduits and a ball attached to the circuit hanger adjacent the inspiratory conduit cradle such that when the ball is connected to a medical stand, the expiratory conduit cradle is positioned below the inspiratory conduit cradle. The connector can alternatively or additionally include a coaxial wye-piece that includes an inspiratory branch, an expiratory branch, and a patient end. The tip of the inspiratory branch that is internal to the coaxial wye-piece may have a lip and a narrowed diameter, features which obstruct or reduce condensate from entering the inspiratory branch and the inspiratory conduit regardless of the coaxial wye-piece orientation or position.

A non-invasive ventilation system may include at least one outer tube with a proximal lateral end of the outer tube adapted to extend to a side of a nose. The at least one outer tube may also include a throat section. At least one coupler may be located at a distal section of the outer tube for impinging at least one nostril and positioning the at least one outer tube relative to the at least one nostril. At least one jet nozzle may be positioned within the outer tube at the proximal lateral end and in fluid communication with a pressurized gas supply. At least one opening in the distal section may be adapted to be in fluid communication with the nostril. At least one aperture in the at least one outer tube may be in fluid communication with ambient air. The at least one aperture may be in proximity to the at least one jet nozzle.

A non-invasive ventilation system may include a nasal interface. The nasal interface may include a left outer tube with a left distal end adapted to impinge a left nostril, at least one left opening in the left distal end in pneumatic communication with the left nostril, and a left proximal end of the left outer tube in fluid communication with ambient air. The left proximal end of the left outer tube may curve laterally away from a midline of a face. A right outer tube may be similarly provided. One or more left jet nozzles may direct ventilation gas into the left outer tube, and one or more right jet nozzles may direct ventilation gas into the right outer tube. The jet nozzles may be in fluid communication with the pressurized gas supply.

A system for reducing airway obstructions of a patient may include a ventilator, a control unit, a gas delivery circuit with a proximal end in fluid communication with the ventilator and a distal end in fluid communication with a nasal interface, and a nasal interface. The nasal interface may include at least one jet nozzle, and at least one spontaneous respiration sensor in communication with the control unit for detecting a respiration effort pattern and a need for supporting airway patency. The system may be open to ambient. The control unit may determine more than one gas output velocities. The more than one gas output velocities may be synchronized with different parts of a spontaneous breath effort cycle, and a gas output velocity may be determined by a need for supporting airway patency.

The present invention relates to a tracheal coupling comprising a patient port 33, an outlet port 36, an inlet port 31 between the patient port and the outlet port, such that flow 34 from the inlet port can go to the patient port or direct to the outlet port, and a flow restriction e.g. 32 between the inlet port and the outlet port, or at the outlet port.

A breathing mask which is convenient for enteral nutrition using a nasogastric feeding tube when the mask is in use may be provided. The breathing mask may include at least one nasogastric tube port. The port may allow a nasogastric tube to pass through the mask without substantially affecting the seal or pressure of the mask while accommodating enteral feeding. In addition, the breathing mask may incarnate the human-centered design to reduce discomfort in patients and is favorable for therapy and rehabilitation.

Breath sample systems for use with ventilators are disclosed herein. An example device can include a housing that contains a breath capture module that collects a breath sample from a patient, an input in fluid communication with an expiratory limb of a ventilator and the breath capture module, the input receiving a breath of the patient, an output in fluid communication with the expiratory limb of a ventilator to return the breath to the ventilator, a pump, and a controller that controls the pump to obtain the breath sample by drawing the breath into the input, across the breath capture module, and out of the output.

The present invention provides for an improved method of determining a water out condition in a humidified gases supply apparatus. The method includes a two step process including a primary determination of a water out condition and a secondary determination of a water out condition. This primary determination is made during observation of the normal operation of the apparatus. During the secondary determination the method takes temporary control over the humidifying part of the apparatus. The secondary determination confirms or contradicts the primary determination.