74 results about "Artificial ventilation" patented technology

According to one aspect of this invention, there is provided a medical facial mask having intubation port to insert an endotracheal tube; air ventilation port to perform artificial ventilation during intubation procedure; and a display device to display image of a patient's airway, wherein the image is transmitted from an image acquisition device which is inserted in the patient's airway.

The invention refers to a method and apparatus for changing the concentration of a target gas at the blood compartment of a patient's lung from an actual target gas concentration to a desired target gas concentration during artificial ventilation with an inspiratory gas composition by a respirator being controlled via a set of ventilation parameters. In order to decrease the negative effects of general anaesthesia during artificial ventilation even further, the method according to the invention comprises the following steps: a) ventilating the lung in a first ventilation stage, and b) ventilating the lung in a second ventilation stage in which alveolar recruitment is promoted.

The invention provides a resistance reduction-propulsion integrated structure of a manually-ventilated supercavitating torpedo. A traditional torpedo structure is changed, a cavitation bubble generator on the head portion of the traditional structure is omitted, and the head portion of the torpedo is made to be a plane; an engine jet pipe located on the tail portion of the torpedo is omitted, and four small engine jet pipes are arranged at the front end of the torpedo and evenly distributed in the upper direction, the lower direction, the left direction and the right direction; the included angle between the central axis of each jet pipe and the central axis of the torpedo is 10-15 degrees; by the adoption of the structure, the situation that the movement form is instable due to the fact that the front portion and the rear portion of the torpedo bear thrust at the same time is avoided, and meanwhile uniform thrust can be provided. The resistance reduction-propulsion integrated structure of the manually-ventilated supercavitating torpedo can be applied to low-speed movement and can also achieve high-speed movement; during low-speed movement, natural cavitation bubbles cannot be formed on the plane of the front portion of the torpedo, the engine jet pipes inject air so that a ventilation cavitation bubble can be formed nearby, the resistance of the portion covered with the cavitation bubble is reduced, the resistance reduction effect is achieved, and a propulsion system and a resistance reduction system of the torpedo are combined.

The invention discloses a high-speed effluent navigation body ventilation vacuole multiphase flow characteristic measurement experiment device and method and relates to the high-speed effluent navigation body ventilation vacuole multiphase flow field. A motion device, an air charging device, a lighting device and an experimental data acquisition device are combined to form a set of unique experimental method for studying a ventilation vacuole fusion mechanism and a ventilation vacuole flow characteristic. According to the characteristics of a decompression tank, a unique movement mode, an illumination mode, an observation mode, and the air charging mode of accurately controlling an air charging flow and pressure are designed, and problems that a previous ventilation vacuole experiment research device can not provide a decompression environment, can not accurately control a ventilation parameter, and can not overcome the work of the motion device in the decompression environment and soon are solved. An artificial ventilation vacuole fusion process in a real underwater launching process can be simulated, the flow state characteristic of a navigation body is researched and the deviceand the method have a great advantage on the aspect of researching ventilation vacuole fusion.

An artificial ventilation apparatus includes: a connecting portion which is connected to a respiratory system of a patient; an inspiratory circuit which is a flow path for flowing a gas from a ventilator to the connecting portion; an expiratory circuit which is a flow path for guiding a gas exhausted from the connecting portion to an exhaust portion of the ventilator; an expiratory valve which blocks a flow of a gas from the exhaust portion toward the connecting portion; a carbon dioxide concentration sensor which is disposed in a circuit that is arranged at a downstream side of the expiratory valve and which detects a carbon dioxide concentration; and an alarm outputting unit which outputs an alarm based on an output of the carbon dioxide concentration sensor.

The invention provides a computer identification and artificial interaction combined household garbage target identification system. The system includes a morphological identification module, an intermediate result comprehensive processing unit and an artificial assistant processing module, the morphological identification module receives the optical image shot by a sampling camera in real time and performs the morphological comprehensive processing of each frame of the received image, and after the repeated targets are identified and rejected, the target information and the image highlighting the targets are transmitted to the intermediate result comprehensive processing unit, and the image is transmitted to the artificial assistant processing module, the artificial assistant processing module continuously displays each frame of the received and processed image, one clicks the targets, which are not identified by the morphological identification module on the screen, on the displayed image based on the specific condition of the shot optical image, the module transmits the information corresponding to the clicking to the intermediate result comprehensive processing unit, and the intermediate result comprehensive processing unit further rejects the repeated targets based on the received information and the target coordinate and angle information is finally output.

The invention relates to an electronic tongue detection information-based Wuyi rock tea taste grade discrimination method. The method comprises the following steps: preparing a liquid sample, acquiring detection information, constructing a Logistic regression discriminant connection function, and calculating the centroid distance of various grades of samples. The discrimination method effectively solves the problem of unable long-time examination of artificial examination due to sensory fatigue, well eliminates discrimination result errors among examination personnel, improves the stability and the consistence of taste grade examination results, and has the advantages of convenient and fast examination process, short time, and realization of completion of a whole process from sample preparation to discrimination completion in 5min; and a model analysis result obtained through the method has good stability, the consistency of the model analysis result with an artificial examination result is higher than 90%. The method has very good practical values, and is of great significance to application of automatic control means in the production process of Wuyi rock tea and quality evaluation description, sales and circulation of final tea products.

The invention discloses a hydroreactive metal fuel swirl stamping ship propulsion system aiming at solving the problems that in an existing ship propulsion system, the maximum ship speed of a traditional propeller propulsion system is limited, and when water stamping is adopted for water spraying propulsion, the defect that the reaction form and speed of water and metal in a combustion chamber aredifficult to control exists. The hydroreactive metal fuel swirl stamping ship propulsion system comprises a water storage container, a high-pressure pump, a high-pressure power system, a hydraulic pressure stabilizing unit, a casing, a swirl generator, a gas supply system, a stamping cone, a combustion chamber, a spraying pipe and a metal particle supply system. The swirl generator, the stampingcone and the combustion chamber are sequentially arranged in the casing. According to the hydroreactive metal fuel swirl stamping ship propulsion system, through manual ventilation cavitation and swirl stamping, the speed and temperature of fluid before entering the combustion chamber are increased, so that the contact area between the fluid entering the combustion chamber and metal particles is increased, the reaction rate is increased, and the controllable continuous reaction of the water and the metal particles at the normal temperature and the normal pressure is achieved.

A breathing tube support device for holding and supporting one or more flexible breathing tube(s) of a breathing circuit during provision of anesthesia, assisted and artificial ventilation and/or spontaneous ventilation has a flexible support arm formed of a length of flexible axially extendable and collapsible corrugated tubing, a mounting base at a bottom end thereof for attachment to the patient or a support surface, and a breathing tube holder a top end thereof for receiving and supporting a section of the breathing tube(s). The flexible support arm can be expanded to increase its length longitudinally and collapsed upon itself to shorten its length longitudinally, and is sufficiently flexible to assume a bent or curved configuration, and sufficiently stable to retain the bent or curved configuration, whereby breathing tube(s) held and supported by the device can be optimally positioned relative to the patient's head and neck area.

The invention discloses a breathing machine pressure adjustment method. The method comprises the steps that when a user breaths, the minute ventilation at the preset frequency is collected, and a first-order linear equation is constructed according to the minute ventilation; the magnitude of a monomial coefficient of the first-order linear equation is judged, and/or the relation of the slope of the first-order linear equation and the preset slope range is compared; according to the judging result of the magnitude of the monomial coefficient, and/or the comparison result of the relation of the slope of the first-order linear equation and the preset slope range, the breathing positive pressure is adjusted. The invention further discloses a breathing machine pressure adjustment device and a breathing machine. The breathing machine can adjust the inspiration pressure in a self-adaptive mode, the accuracy of the actual ventilation output by the breathing machine can be improved, and therefore the error between the actual ventilation and the set target ventilation is reduced. The breathing machine can provide the ventilation volume meeting the requirement for treatment and can meet the requirement of a patient, and therefore the best treatment effect is achieved.

The invention discloses a horizontal underwater manual ventilation cavitation simulating device, which comprises a projectile body and a sealing piston. The projectile body has a cavity with preset volume. A plurality of ventilation holes are arranged in the projectile body. The sealing piston is movably arranged in the cavity of the projectile body and is arranged at positions where the ventilation holes are arranged. The sealing piston and the projectile body are in closed fit with each other. By simulating the momentum transmission rod of an underground launching device, when the projectile body is launched, the projectile body is instantly accelerated to a high-speed state, the sealing piston cannot move immediately under the effect of inertia, the sealing piston and the projectile body move relatively and the cavity is communicated with the external world through the ventilation holes. In the high-speed moving process of the projectile body, the pressure of the area of the ventilation holes is much smaller than normal pressure in the cavity, air runs out of the ventilation holes at the moment to form a manual ventilation cavitation phenomenon.

An artificial ventilation apparatus includes: a connecting portion which is connected to a respiratory system of a patient; an inspiratory circuit which is a flow path for flowing a gas from a ventilator to the connecting portion; an expiratory circuit which is a flow path for guiding a gas exhausted from the connecting portion to an exhaust portion of the ventilator; an expiratory valve which blocks a flow of a gas from the exhaust portion toward the connecting portion; a carbon dioxide concentration sensor which is disposed in a circuit that is provided at a downstream side of the expiratory valve and which detects a carbon dioxide concentration; and an alarm outputting unit which outputs an alarm based on an output of the carbon dioxide concentration sensor.

The invention provides a collection device of expired air condensed liquid. The collection device comprises an oral-nasal mask, a cooling pipeline and a refrigerating system, wherein the oral-nasal mask is used for collecting expired air of a person to be tested; one end of the cooling pipeline is connected with the oral-nasal mask and the other end of the cooling pipeline is connected with a sampling pipe; the refrigerating system acts on the cooling pipe and the expired air in the cooling pipeline is cooled to be lower than a dew point so that the expired air is converted into the condensed liquid; the condensed liquid falls into the sampling pipe due to gravity through setting an angle of the cooling pipeline; the collection device can further comprise a quantifying system; a liquid level height in the sampling pipe is monitored through a photoelectric induction manner; when the condensed liquid in the sampling pipe reaches a pre-set liquid level height, prompting information is sent out and specimen collection is stopped; the device can be used for collecting the expired air condensed liquid under the condition that normal breathing of the person to be tested is not disturbed or manual ventilation is utilized, and the problems of a current collection device of expired air condensed liquid that standards are not uniform, the effect is not stable and the automation degree is poor are solved.

This invention relates to an artificial breathing apparatus comprising a patient circuit (1) carrying gas comprising an inspiratory branch (2), and at least one pressure sensor arranged so as to operate at least one pressure measurement within the patient circuit (1), characterised in that it comprises a differential pressure sensor (4) and an absolute pressure sensor (5) located on the inspiratory branch (2), and control means cooperating with the differential pressure sensor (4) and the absolute pressure sensor (5) to detect a failure or malfunction of one or other of the said differential pressure (4) and absolute pressure sensor (5). The apparatus covered by the invention can be used in the treatment of chronic obstructive pulmonary disease (COPD), acute respiratory distress syndrome (ARDS) or in post-operative care.

The invention discloses a sapphire growth defect visual detection method based on deep learning, and belongs to the field of sapphire preparation detection. In the process of artificial sapphire synthesis, the detection of sapphire growth defects mainly relies on manual detection, which is time-consuming and laborious, the environment in the growth furnace causes difficulties in artificial detection of growth defects, and artificial observations are prone to errors. The invention provides a visual detection method for sapphire growth defects based on deep learning theory, and the method collects no less than 2 million of images of sapphire crystal growth stages by using a camera for processing, generates a training set, sets up a deep learning network, adjusts parameters to train the deeplearning network to generate a training model, uses the training model to detect the images to be tested, determines the crystal growth state in real time, and operates the seed crystal rod to make the growth defect crystal grow normally.

Systems and methods for determining lung recruitment/derecruitment dynamics of an individual are disclosed. The disclosed embodiments advantageously use variable ventilation of the individual to determine lung dynamics without necessitating additional, potentially harmful ventilation maneuvers.

The invention discloses a biological trickling filter treatment system and treatment method of domestic wastewater. The treatment system comprises an intake water tank, wherein the intake water tank is connected with one end of an intake pipeline through a water pump, the other end of the intake pipeline is connected with a water distributing device, and a biological trickling filter is arranged under the water distributing device; the biological trickling filter comprises a box body, a plurality of effluent holes are formed at the bottom of the box body, the interior of the box body comprises a pebble layer and a plurality of zeolite packing layers filled from the bottom to the top, a scrap iron layer is uniformly spread between the adjacent two zeolite packing layers, and a microbial film is attached to each zeolite packing layer; and wastewater is pumped into the intake pipeline by the water pump and is sprinkled dropwise by the water distributing device into the biological trickling filter to carry out purifying treatment. The effluent water quality meets the first-level discharge standard of 'Discharge standard of pollutants for municipal wastewater treatment plant', water exclusion and clogging phenomena do not occur in the operational process, and artificial ventilation is not needed, so that the biological trickling filter treatment system and treatment method can be applicable to distributed treatment of wastewater in rural areas of China.