10 results about "Expiratory Airflow" patented technology

Supplying therapeutic gas. At least one example is a method of providing therapeutic gas to a patient, the method comprising: sensing a signal indicative of an exhalation airflow from the patient, the exhalation airflow is non-zero and an airflow rate trending toward zero; sensing, during the exhalation airflow, a change in the airflow rate prior to a contiguous inhalation; and delivering a bolus of therapeutic gas to the proximal end of nasal cannula responsive to the change in the airflow rate.

This invention relates to the field of respiratory masks and discloses a respiratory therapy system and method based on mask structure optimization, including a respiratory therapy device and a mask body connected thereto. The mask body has an inlet pipe, an outlet pipe, and a liquid collection frame. A movable valve is installed inside the outlet pipe, and a flip-up liquid-blocking device is installed at the liquid inlet at the upper end of the liquid collection frame. The movable valve and the liquid-blocking device are connected by a linkage rod, and the liquid-blocking device is reset by a torsion spring. After the therapeutic gas enters the mask body through the inlet pipe, it is buffered and dispersed by an airflow buffering and guiding structure to reduce the direct impact of airflow on the patient's mouth and nose. Condensate or atomized residue formed during treatment can enter the liquid collection frame. When the patient exhales, the movable valve moves to the pressure relief position, allowing the exhaled gas to be discharged through the outlet pipe. Simultaneously, the linkage rod drives the liquid-blocking device to flip to the blocking position to block the liquid inlet and prevent the exhaled airflow from disturbing the liquid in the collection frame. After exhalation, the liquid-blocking device returns to the open position.

A positive expiratory pressure-generating device for reducing breathlessness in a subject with one or more pulmonary disorders is disclosed. The device is rigid and hollow and can be held in the mouth of the subject. The device has at least one air chamber, at least one opening in the portion of the device that is held in the mouth and at least one additional airflow orifice. The device is configured to increase expiratory resistance and can be supported by the mouth of the subject without the need for additional support by hands, another device or other means.

The present application provides a snoring treatment instrument, comprising a vibration part. The vibration part is provided with an air inlet, a first cavity in communication with the air inlet, a second cavity in communication with the first cavity by means of a communication port, and a plurality of air outlets in communication with the second cavity, and comprises a switching valve. The switching valve is at least partially located within the communication port in a natural state and can open the communication port under the blowing of an exhalation airflow, thereby enabling the vibration part to generate a vibration sound wave with a frequency of 20-200 Hz. Using the snoring treatment instrument provided in the present application can accurately exercise the upper respiratory tract muscles, thereby strengthening the upper respiratory tract muscles and treating snoring.

The utility model discloses an interesting breathing training device with positive end-expiratory pressure accompanying oscillation. The interesting breathing training device comprises an expiration connector, a training assembly and an oscillation assembly which are detachably connected in sequence. The training assembly comprises a first shell, an oxygen connector, an expiration one-way valve and a resistance adjusting valve, a first expiration channel is formed in the first shell, the oxygen connector is communicated with the first expiration channel, and the expiration one-way valve and the resistance adjusting valve are sequentially arranged in the first expiration channel; the oscillation assembly comprises a second shell and a curled rubber tube, a second expiration channel is formed in the second shell, and one end of the curled rubber tube is communicated with the second expiration channel. The oxygen interface is arranged, so that hypoxemia caused by insufficient oxygen supply in the training process is avoided; a resistance adjusting valve is further arranged to adapt to patients in different disease stages; a curled rubber tube is arranged, so that the curled rubber tube is stretched when exhaled airflow passes through, and a patient can obtain real-time training effect feedback; the expiration connector, the training assembly and the oscillation assembly are all detachable and are convenient to disinfect or replace.

This invention discloses a method for evaluating the quality of expiratory movements based on multi-branch convolution and attention mechanisms. The steps include: S1 acquiring temporal data of expiratory airflow and performing normalization processing; S2 constructing first-order and second-order variation features of the expiratory airflow; S3 introducing energy features based on local time windows, calculating the energy of the first-order variation features of the expiratory airflow, and obtaining local energy intensity features; S4 concatenating the original airflow features, variation features, and local energy features to construct a unified multi-channel temporal feature representation; S5 dividing the expiratory movement into stages and extracting multi-branch features within each stage; S6 introducing a temporal attention mechanism to high-frequency related features to locate the specific time position of anomalies; and S7 outputting the probability distribution of expiratory movement quality to determine the quality evaluation result of the expiratory movement. This method improves the accuracy of expiratory movement quality evaluation and makes the differentiation of anomaly types more detailed.

The invention discloses a rapid expiration collection and metagenome sequencing system and application thereof. The system comprises a breathing mask, a first pipeline, a temperature control assembly, an inverted conical part, a sample collection assembly, a nucleic acid purification assembly and a quality detection sequence and analysis assembly. A stable cyclone and a supersaturated condensation environment are formed in an exhaled air flow channel, microorganisms, viruses, extracellular vesicles and nucleic acid molecules in exhaled air are condensed into micro-droplets, and the micro-droplets are rapidly collected. Through nucleic acid extraction, library construction and metagenome sequencing by a high-throughput sequencing platform, comprehensive analysis of respiratory tract related pathogens, drug-resistant genes and microbial community structures is realized, and the method is suitable for respiratory disease screening, pathogen traceability and respiratory tract micro-ecological monitoring. The method has the advantages of being short in sampling time, high in nucleic acid recovery rate, high in detection sensitivity and adaptive to an automatic sequencing process, and an integrated solution is provided for clinical transformation of expiration detection and respiratory tract micro-ecological monitoring.

The snore treatment instrument comprises a shell, an isolation plate and a vibration unit, the shell is provided with an inner cavity, an air inlet end and an air outlet end, and the air inlet end and the air outlet end communicate with the inner cavity; the isolation plate is arranged in the shell and divides the inner cavity into a first cavity and a second cavity, and the isolation plate is provided with an opening; the vibration unit comprises a support, a swing arm and a switch valve, the support is fixed to the isolation plate, the first end of the swing arm is close to the air inlet end and rotatably connected with the support, the second end of the swing arm is close to the air outlet end and is a free end, and the switch valve is connected with the first end and the second end and seals the opening in the natural state. The swing arm can rotate around the support along with the swing arm under blowing of expiration airflow so that the expiration airflow can flow into the second cavity through the opening and flow out of the air outlet end, and a power arm of the swing arm is longer than a resisting arm. The power arm of the swing arm of the snore treatment instrument is longer than the resistance arm, so that the size can be well reduced, the snore treatment instrument is convenient to carry, and treatment can be carried out anytime and anywhere.

A measurement arrangement for measuring carbon dioxide partial pressure of exhaled air from a person includes a calculation unit, a carbon dioxide analyser device, and a gas conduit assembly. A perturbation volume member is provided, defining a predetermined known perturbation volume, and configured to be selectively connected and disconnected to a person such that both inspiratory and expiratory air flows can pass either through the perturbation volume member or not, thereby introducing a variation of the determined end-tidal carbon dioxide. The perturbation volume member is either a gas conduit, or a perturbation space conduit which is configured to be connected to and disconnected from the gas conduit. The calculation unit is configured to calculate the effective pulmonary blood flow (EPBF) and the effective lung volume (ELV) based upon these induced variations of the determined end-tidal carbon dioxide partial pressure, the known perturbation volume, and a respiratory rate.

The snore treatment instrument comprises a shell, an isolation plate and a vibration unit, the shell is provided with an inner cavity, an air inlet end and an air outlet end, and the air inlet end and the air outlet end communicate with the inner cavity; the isolation plate is arranged in the shell and divides the inner cavity into a first cavity and a second cavity, and the isolation plate is provided with an opening; the vibration unit comprises a support, a swing arm and a switch valve, the support comprises a base and a rotating shaft, the base is fixed to the isolation plate, the first end of the swing arm is close to the air inlet end and rotatably connected with the base through the rotating shaft, the second end of the swing arm is close to the air outlet end and is a free end, and the switch valve is connected with the first end and the second end. The opening is sealed by the switch valve in a natural state, and the switch valve can rotate around the rotating shaft along with the swing arm under blowing of expiration airflow so that the expiration airflow can flow into the second cavity through the opening and flow out of the air outlet end. According to the snore treatment instrument, the number of the rotating shaft is one, the whole rotating shaft penetrates through the base and the swing arm, and the matching precision of the snore treatment instrument is improved.