Abstract: A mattress overlay apparatus is provided for use with a mattress. The mattress overlay apparatus includes an overlay configured for placement atop the mattress and having a plurality of inflatable bladders, a blower, and first and second rotary plate valves pneumatically coupled to the plurality of bladders and the blower. The first and second rotary plate valves are arranged in series between the plurality of bladders and the blower. The first and second rotary plate valves and the blower are operated to provide the overlay with percussion and vibration (P&V), left and right turn assist, and microclimate management (MCM) functionality.

Abstract: A respiratory device includes a blower having an inlet and an outlet, a patient interface, and a valve including a valve member that is rotatable through a first angular displacement in a first direction from a first position to a second position. The outlet of the blower is coupled to the patient interface so that positive pressure is provided to a patient's airway via the patient interface when the valve member is in the first position. The inlet of the blower is coupled to the patient interface so that negative pressure is provided to the patient's airway via the patient interface when the valve member is in the second position. The valve member is rotatably oscillated back and forth when the valve member is in the first position and when the valve member is in the second position so that oscillations in the positive pressure and negative pressure, respectively, are provided to the patient's airway.

Abstract: A method of determining respiratory rate from a photoplethysmograph signal includes filtering the photoplethysmograph signal to create a filtered photoplethysmograph signal. The method also includes detecting peaks and valleys in the filtered photoplethysmograph signal to extract predetermined features from the filtered photoplethysmograph signal. The method also includes obtaining variation waveforms from the predetermined features. The method also includes removing outliers from each of variation waveforms. The method also includes interpolating for the outliers removed from each of the variation waveforms to acquire a frequency estimation of each of the variation waveforms. The method also includes determining a respiratory rate based on the frequency estimation of each of the variation waveforms. The method also includes determining a weighted average of the respiratory rate the variation waveforms to determine an estimated respiratory rate.

Abstract: Selectable control valves and mattress systems incorporating the same are disclosed. In one embodiment, an inflatable mattress system includes a pump, a selectable control valve in fluid communication with the pump, and a mattress pad having a plurality of inflatable chambers that are in fluid communication with the selectable control valve. The selectable control valve includes a valve case having an inlet port and a plurality of supply ports, a stepper motor having a motor body that is coupled to the valve case, a rotating plate having a passage and coupled to the stepper motor, and a plurality of seal cartridges positioned within the valve case. The seal cartridges each include an engagement spring and a compliant seal, where the engagement spring maintains a load on the compliant seal such that the compliant seal forms a fluid tight seal with the rotating plate.

Abstract: A nebulizer assembly for a respiratory device is provided having a housing defining a chamber. The housing also has a nebulizer port configured to receive a nebulizer to discharge atomized medication into the chamber. An outlet of a handle is coupled to the inlet of the housing. A hose is coupled to an inlet of the handle. A patient interface is coupled to the outlet of the housing. Air flows from the hose to the patient interface via the handle and the housing. The air mixes with the atomized medication within the chamber.

Abstract: A respiratory acoustic analysis system for sensing and analyzing respiratory sounds of a patient may include a High Frequency Chest Wall Oscillation (HFCWO) vest, at least one sensor coupled with the HFCWO vest, and an algorithm stored in a processor for processing sensed data from the at least one acoustic sensor to provide processed data describing the respiratory sounds of the patient, in a form that can be used by a physician or other user.

Abstract: A respiratory device includes a blower having an inlet and an outlet, a patient interface, and a valve including a valve member that is rotatable through a first angular displacement in a first direction from a first position to a second position. The outlet of the blower is coupled to the patient interface so that positive pressure is provided to a patient's airway via the patient interface when the valve member is in the first position. The inlet of the blower is coupled to the patient interface so that negative pressure is provided to the patient's airway via the patient interface when the valve member is in the second position. The valve member is rotatably oscillated back and forth when the valve member is in the first position and when the valve member is in the second position so that oscillations in the positive pressure and negative pressure, respectively, are provided to the patient's airway.

Abstract: A system is provided for monitoring a patient on an air support system. The system comprises a capacitive sensor system having a capacitive sensor positioned at the underside of an air filled mattress, and a respiration signal processing module that receives the output of the capacitive sensor system and is configured to monitor patient respiration. Respiration is monitored by: periodically sampling the capacitive sensor system output to obtain measurements of incremental body displacement; analyzing a plurality of the samples to determine one or more values for parameters of patient respiratory rate; and determining when one or more of the parameter values indicate abnormal respiration. A corresponding method and computer program are also provided.

Abstract: An apparatus includes a garment to be worn by a patient and a plurality of mechanical percussors carried by the garment. The plurality of mechanical percussors provide percussive forces onto a patient's thorax in order to dislodge mucous buildup in the airways and encourage expectoration of the mucous. The apparatus further includes a controller connected to the garment. The apparatus also includes an electrically operated nebulizer unit that removably attaches to the controller. The controller commands the operation of the mechanical percussors and provides power to the nebulizer unit.