376 results about "Breath out" patented technology

A small oxygen enriching apparatus which can supply oxygen-enriched gas at high flow rate without imparting unnatural sensation to a user, as well as a controller and recording medium therefore. In step 100, a judgment is made as to whether a flow rate set by use of a flow-rate setting unit 47 is equal to or less than a continuous base flow rate (2 liters/min). When the set flow rate is a low flow rate of not greater than 2 liters/min, breath-synchronized operation is not performed (continuous supply is to be performed), and therefore, in step 110, oxygen-enriched gas is supplied continuously at the set flow rate. When the set flow rate is a high flow rate of greater than 2 liters/min, breath-synchronized operation is to be performed (supply during the inhalation period only of each breathing cycle), and therefore, in step 120, oxygen-enriched gas is continuously supplied at the continuous base flow rate. In step 140, in order to perform breath-synchronized operation, control for opening and closing an electromagnetic valve 45 is performed. That is, oxygen-enriched gas is supplied during the inhalation period only of each breathing cycle, and supply of oxygen-enriched gas is stopped during the exhalation period.

A non-invasive monitoring apparatus for end-tidal gas concentrations, and a method of use thereof, is described for the detection of endogenous gas concentrations, including respiratory gases, in exhaled breath.

In order to provide an alcohol test device which can keep evidence that an identical person has been surely tested in an alcohol test, the alcohol test device includes an alcohol test unit which measures alcohol concentration from breath exhaled by a subject; a drinking determination unit which determines whether or not the subject is in a drunken state on the basis of a measurement result of the alcohol test unit; a camera unit which photographs a face image of the subject when the breath is exhaled into the alcohol test unit; a face authentication identical person determination unit which compares a face image photographed by the camera unit with a face image of the subject himself (herself) preliminarily photographed, and performs identical person authentication which determines whether or not the subject is the identical person; a result control unit which edits combining a result of identical person authentication by the face authentication identical person determination unit and a result of drinking determination by the drinking determination unit; and a result display unit which displays a result edited by the result control unit.

This invention relates to a method that comprises the introduction of a catheter via left subclavian vein, advancing into the right atrium and then positioning it in the inferior vena cava, just at the cava-diaphragm junction, where it is anchored at its extreme; and thereafter an external inflation of a balloon positioned in said catheter takes place through a physiological solution to reach a diameter corresponding to half the diameter of the inferior vena cava, resulting in hemi-occlusion in the expiration phase (breath-out) and total occlusion for a short period during the inspiration phase (breath-in), regulating (normalizing) the venous return and decreasing the cardiac volume overload, as a treatment for heart failure. The invention also comprises hydromechanics devices to normalize the venous return in the circulatory system. Said venous return is increased in 90% of patients with heart failure. In particular, it refers to a combined catheter with an inflatable balloon, producing said balloon a cyclical occlusion of the inferior vena cava (IVC). The said balloon is adaptable to the area of its location in the inferior vena cava, proximal to the right atrium (RA), which comprises of means for its fixation within said vein, as well as the capacity of modifying the volume in response to the requirements of the patient. This device is implanted for an extended period of more than three months. The final objective is to treat and stop the progression of heart failure.

In order to protect the passengers of an airplane against the effects of depressurization of the cabin, breathing masks are fed with oxygen at a rate which is an increasing function of cabin altitude. Oxygen is fed via a constriction and an economizer bag, and an initial fraction only of the gases breathed out is caused to be re-breathed by collecting the initial fraction in a flexible re-breathing bag in communication with the mask. The re-breathing bag has a volume in inflated state which is not less than the total dead volume of the respiratory tract and the mask. A protective apparatus comprises a feed control unit supplying an adjustable flow rate to masks connected to a general pipe via respective economizer bags. A re-breathing bag retards re-breathing and stores only an initial fraction of the gases breathed out on each exhalation.

A retractable protective respiratory mask including disposable filters, which protects the respiratory system, covering the nose and mouth during inhalation while breathing in an atmosphere polluted by different agents, such as infectious, virulent, or pathogenic agents, or other toxic substances. The mask also protects non-infected persons from persons infected with a virus, as saliva and sputum expelled when coughing, breathing-out, and/or talking can be deposited inside the mask. The mask can include a collection-container filter, allowing a viral-infected wearer to breathe in a polluted atmosphere, to talk, to cough, to sneeze and/or to deposit saliva and sputum. The mask can be used as any other type of filter mask and/or disposable environmental air mask for industry in general, and also providing protection in rarefied natural atmospheres. The mask can be used as a container or packaging for drugs administered by means of bronchial airways, or as medical or rescue masks.

The monitoring breathalyzer has an alcohol sensor, a non-volatile memory, a processing unit or processor, and a screen. The processing unit determines the accuracy of the breathalyzer using the user's body as a simulator. In monitoring mode, the processing unit receives a BAC% measurement from the alcohol sensor based on the breath sample provided by the user at a sample time and determines a reference point from the BAC% measurement. The sample time is determined based on the user's metabolism rate or based on a time to a predetermined calibration point from a drink start time.

A self-calibration exhaled gas analysis device comprises an exhalation control module, a sampling module, a detection module and a control module, wherein the exhalation control module and the sampling module are used for exhausting and sampling exhaled gas of an examinee respectively, and the control module is used for controlling the exhalation control module, the sampling module and the detection module and performing information collection, processing, storage and communication. The sampling module comprises at least two gas chambers for temporarily storing part of the exhaled gas, the gas in the gas chambers is directly measured after the concentration of the gas is quantitatively changed by electrolysis, two gas chambers are connected with the detection module through valves, and the detection module comprises a valve, a sensor, a gas pump and a pipeline and is used for respectively leading the gas in at least two gas chambers into the sensor for measurement.

The invention discloses a novel respirator comprising a mask and a respiration filter device. The mask comprises a base, an outer cover and an inner cover, the edge of the outer cover is clamped on an outer upper platform of the base, the inner cover is clamped on an inner upper platform of the base, and the respiration filter device is clamped between the outer cover and the inner cover. The novel respirator further comprises an inflatable or deflatable hollow air bag which is detachably connected with the base. The shape of the air bag can be adjusted according to facial contours and shapes of nose bridges of different wearers, and adaptation of the respirator and comfort of the wearers are enhanced remarkably; meanwhile, the outer side face of an air bag body is provided with a soft sweat-absorbent pad which can absorb sweat generated by the wearer when using the novel respirator in an environment at high temperature; in addition, the latticed inner cover is directly connected with the base to form a respiratory air cushioning cavity, so that the structure of the respirator is simplified greatly; a one-way air outlet valve component is arranged in the middle of the inner cover, so that exhaled air of human bodies can be discharged out of the respirator to allow the wearers to breathe more smoothly.

The invention discloses a broad-spectrum purifying device for human nasal respiration purification. The device is a beautiful, comfortable, hidden and broad-spectrum nasal respiration purifier formed by a combination of an efficient filter sheet combination having a special purification function and high air permeability and a micro elastic purifier accessory. The accessory provides sealed, hidden and elastic control for the air purification filer sheet, when a human breaths in, the air can only penetrate through the filter sheet, and when a human breaths out, a temporary elastic deformation occurs, and the filter sheet is separated from the nostrils to ensure unimpeded expiration. The available filter sheets include acidic filter sheets, alkaline filter sheets, disinfecting and detoxicating filter sheets, neutral filter sheets, self-cleaning dust filter sheets, ultra-moisturization filter sheets, and a catalytic oxidation filter sheets. The filter sheets can be simply activated and regenerated, has the advantages of flexible combination, convenience of use, high efficiency and broad spectrum, comfort and safety, automatic cleaning, repeatable availability, economy, resource saving and the like, is easy for activation and can be made into a breathing mask or other respiration purifiers to meet different requirements.

The invention is directed to a device (6) for furnishing a breathing gas at alternating pressure levels having a feeding device (7) for feeding the breathing gas, a pressure adjusting device (14) for triggering the feeding device set-point breathing gas pressure signal, furnishes the breathing gas at a set-point, a pressure specification device (14) for generating a pressure signal, and parameter-determination means (12) for furnishing parameters representative of at least of the instantaneous pressure (p), the progression of time (t), and the instantaneous breathing gas flow (v), wherein the pressure specification device includes a computer circuit configured such at least in the expiratory phase, an adjustment of the pressure is effected on the basis of a dynamic or nonlinear pressure guidance function, which takes parameters into account that are indicative of the breathing gas flow and the progression of time and as a result, the tendency to lowering the breathing gas pressure in conjunction with the extent of the breathing gas flow decreases with increasing progression of time.

The invention provides a turbine control system. The turbine control system comprises an obtaining module which is used for obtaining running data of a breathing machine from a detecting device of the breathing machine in real time, and a control module which is used for confirming whether the breathing machine is at an expiration phase stage or an inspiration phase stage according to the running data and controlling a turbine of the breathing machine alternately through a retrieval control mechanism and an accurate control mechanism according to a preset switching rule if the breathing machine is at the expiration phase stage or the inspiration phase stage. The invention further provides the breathing machine. By means of the turbine control system and the breathing machine, the excessively-large fluctuation of pressure or flow velocity of gas output by the turbine can be avoided, and the rapid response and accuracy of the breathing machine are improved.

The invention discloses an alcohol concentration detection method. The method comprises the steps that S1, an exhaled air collection channel is opened; S2, indicator values of exhaled air of a human body are detected, wherein the indicator values include an exhalation flow value, single-exhalation duration, a real-time air pressure value, a real-time temperature value and a real-time output valueof an alcohol sensor; S3, whether the exhalation flow value and the single-exhalation duration both reach preset values is judged, if yes, S4 is executed, or otherwise air collection is stopped, and S1 is executed again after interval time t; S4, whether the real-time air pressure value of the air reaches a preset value is judged, if yes, S5 is executed, or otherwise S2 is executed; S5, accordingto the real-time air pressure value, the real-time temperature value and the real output value of the alcohol sensor, an alcohol concentration value of the exhaled air is calculated; and S6, accordingto the alcohol concentration value of the exhaled air, an alcohol concentration value in blood of the human body is calculated. Through the method, the accuracy of a detection result can be guaranteed while the alcohol concentration in the blood of the human body is detected in real time.

A calibrating device (1) for a breath alcohol measuring device (25) as well as a system including such a calibrating device (1) and a breath alcohol measuring device (25) are shown and described. A test gas container (3), which provides a test gas, which can flow via an outlet (5) into an inlet (11) of a measuring adapter (9), is provided in the calibrating device (1). A measuring adapter (9) forms a flow path (17), in which the test gas is subjected to a dynamic pressure. The measuring adapter (9) is configured for being connected to a breath alcohol measuring device (25), which triggers a measurement when the dynamic pressure of the test gas reaches a pressure threshold value of the breath alcohol measuring device (25).

The invention discloses a respiratory pulse valve, which comprises an upper cover, an air inlet section, an air outlet section and a lower cover connected sequentially from top to bottom. After oxygen enters the air inlet section, it is divided into two paths. The air passage of the main valve in the air outlet section is connected with the air outlet connected to the main valve air passage, the second air passage is connected with the pilot air passage set in the air outlet section, and the chamber formed between the air outlet section and the lower cover is formed by The valve disc, valve plate and breathing diaphragm are arranged in sequence from top to bottom. The valve disc moves up and down to open or close the air circuit of the main valve. The pilot air circuit is connected to the chamber between the valve disc and the valve plate. The pilot valve port connected to the chamber, the breathing diaphragm closes or opens the pilot valve port, the breathing air circuit is set on the lower cover to connect to the bottom of the breathing diaphragm, and the breathing air circuit and the air outlet are connected to the breathing mask. The invention can turn on and off the delivery of oxygen according to people's respiration, avoiding the direct discharge of oxygen when exhaling, and achieving the purpose of saving oxygen consumption.

A method and infrared sensing device for determining the concentration of alveolar alcohol in a breath sample exhaled by a subject into an infrared sensing device. The presence of alcohol from the upper respiratory tract of the subject is detected by continuously monitoring alcohol and carbon dioxide, normalizing alcohol values with respect to carbon dioxide, calculating a difference between normalized alcohol concentration and carbon dioxide concentration over time, integrating (summing) the difference, and comparing the integrated difference with a threshold. This technique accurately and consistently detects the presence of mouth alcohol in the sample before the presence of carbon dioxide which originates in deep lung breath.

The invention relates to a pneumatic gas-controlled breathing machine which takes gas as a power source. High-pressure gas forms periodic operation through a pneumatic valve so as to supply a proper tidal volume and breathing frequency for a patient. The pneumatic gas-controlled breathing machine only needs to be connected with the gas source so as to supply the proper tidal volume and breathing frequency for the patient through a reducing valve and a control valve of the pneumatic gas-controlled breathing machine self, and the control valve of the pneumatic gas-controlled breathing machine can adjust the breathing frequency and the tidal volume. A normally open valve is closed when the normally open valve controls the pressure of a gas cavity body to rise to a set value, control gas in the gas cavity body is controlled by a normally closed valve and is discharged from an air-resistor simultaneously when the normally open valve is closed, and the normally closed valve recovers to be in the closed state, so that gas supply at the rear end of the normally closed valve is stopped, the time slot from the moment to the next time of ventilation of the normally closed valve is the time for the patient to breathe, and then the process from inhaling to exhaling of the patient is finished. The pneumatic gas-controlled breathing machine works repeatedly in the way.

The invention provides a semi-physical simulation system for pressure adjustment of an oxygen mask respiratory chamber. A lung type regulating valve structure mathematical model, a respiratory valve mathematical model, a respiratory mathematical model and a mask respiratory chamber mathematical model are realized by a Matlab platform in a PC, and are respectively used for describing gas flow characteristics in a lung type regulating valve structure, a respiratory valve, a breathing process and a mask respiratory chamber. An STM32F407IGT6 microprocessor is used as control of the control system in the semi-physical simulation system, thereby operating a control algorithm. The PC communicates with the control system through an RS232 serial port. The semi-physical simulation system is obtained through comparing efficiencies of different control algorithms in the control plan development process of an oxygen mask respiratory chamber pressure regulator. The semi-physical simulation system has advantages of flexible structures of a control algorithm and an application object, high interface universality, etc. The semi-physical simulation system has advantages of realizing advanced problem finding and in-time settlement, shortening development period of a control solution, and saving cost.

The invention relates to a breathing device, in particular to a breathing device with controllable gas volume. Including a breathing end connected to the gas production device, the breathing end includes a cavity, a breathing port communicating with the cavity, an air inlet communicating with the cavity, and an exhalation port communicating with the cavity, The air inlet is connected to the gas manufacturing device through the air inlet pipeline, the air inlet is provided with a first control valve, the exhalation port is provided with a second control valve and a breathing sensor for recording exhalation action information, The volume-controllable breathing device also includes a control circuit communicated with the breathing sensor, and a regulating valve arranged on the air intake pipeline and communicated with the control circuit for adjusting the gas production volume of the gas production device. Such a simple structure can achieve the function of controlling the air supply of the breathing device to the user when inhaling and stopping the air supply when exhaling, which can reduce waste and improve the utilization rate.