40 results about "Gas exchange" patented technology

The present invention relates to a method and apparatus for exchanging gas between two exchange media using an exchange chamber (1) disposed within the housing of an exchange unit, wherein the exchange chamber (1) is divided into two chamber regions by at least one membrane (2), in which the first side of the membrane (2) is in contact with the first exchange medium in the first chamber region, and the second side of the membrane (2) is in contact with the second gaseous exchange medium in the second chamber region, the first chamber region having a connection for the first exchange medium, the first chamber region being incorporated into a first conduit (3) by this connection, and the first exchange medium being passed through the first chamber region using the first conduit. The second chamber region has a connection for a second gaseous exchange medium, and by this connection the second chamber region is incorporated into the second conduit (4), and the second exchange medium can be guided through the second chamber region using the second conduit, and the gas to be exchanged can be transported across the membrane (2) by diffusion, and the apparatus has a pressure generator (9a), and the pressure generator (9a) can be used to generate a pressure difference of at least 10 mmHg of the second exchange medium relative to the ambient atmospheric pressure in the second chamber region, and at least one membrane (2) is permeable to diffusion with respect to the gas to be exchanged, but impermeable to convection.

The invention discloses a threaded nylon explosion-proof pressure-relief waterproof breathable connector which comprises a connector shell, a mounting ring is fixedly connected in the connector shell, the mounting ring is slidably connected with a breathable base, the breathable base is bonded with a breathable film, the breathable base is detachably connected with a gland, the breathable base is sleeved with a pressure spring, and the pressure spring is fixedly connected with the connector shell. The end portion of the ventilation base is detachably connected with an end face elastic buckle, the two ends of the compression spring are fixedly connected with the end face elastic buckle and the installation ring respectively, and the connector shell is provided with an extrusion structure. According to the invention, dual channels of normal micro ventilation of the breathable film and mechanical pressure relief driven by the spring are integrated. Under normal pressure difference, gas is exchanged through the gas-permeable membrane to keep pressure balance and prevent water and dust; when the internal pressure rises suddenly, the air pressure can push the ventilation base to compress the spring, so that the spring is separated from the O-shaped sealing ring, a larger pressure relief channel is opened up instantly, the explosion-proof response is sensitive, and the safety guarantee is more comprehensive.

A liquid-gas exchange device for hazardous drugs includes a syringe, a first connector, a second connector, and a pressure equalization device. During drug dispensing, the collection section collects toxic gases, maintaining pressure balance between the internal and external atmospheric pressures of the drug bottle or bag. This also prevents small amounts of hazardous drugs inside the bottle or bag from passing through the second connector in gaseous form or via atomization. During drug retrieval, the collection section collects and supplies clean air, maintaining pressure balance between the internal and external atmospheric pressures of the drug bottle or bag, and facilitating the removal of the hazardous drugs. The hazardous drugs are blocked by a hydrophobic and breathable membrane, preventing them from entering the collection section.

Vertical downward turbine surface aerator: Unlike current aerators, which are either upward-moving or side-discharge turbines, this one generates a cloud of air bubbles beneath the machine without cavitation. The process relies on generating a specific conical turbulence with an opening of 30 to 40 degrees, which, while drawing the required quantity of air bubbles to a precise depth, keeps them sufficiently away from the hydraulic blades. Figure 1.This aeration machine comprises three distinct elements that allow for the sequencing of the process: a purely hydraulic turbine generating conical turbulence with an opening of approximately thirty to forty degrees; an air injection system based on a centrifugal effect, delivering the precise quantity of air in the form of calibrated bubbles at the apex of the aforementioned cone; and finally, an anti-cavitation system that isolates the propeller from the surface and traps any bubbles that could cause cavitation. The combination of these three elements is essential and characteristic of the process. The integration of these three elements eliminates cavitation, resulting in significantly higher efficiency due to the absence of water lift, as gas exchange is enhanced by the extended transit time of the air bubbles through the water.

The utility model discloses a sanitary water tank for water storage relates to water treatment technical field. A sanitary water tank for water storage, include: box, the top one side of box is equipped with water inlet, is equipped with water outlet at the bottom, wherein, the top one side of box still is equipped with first interface, breathing filter, breathing filter is connected on first interface, breathing filter includes casing, filter core and electric heating component, the filter core is located the inside of casing, and electric heating component is located the outside wall of casing. The sanitary water tank for water storage of the utility model through setting up electric heating component on the outer surface of breathing filter to guarantee the dry of internal environment, avoid the breeding of microorganism, and then when the box is in the gas exchange of inside and outside, can efficiently guarantee the clean and health of water body in the box.

A method (200) for determining the total flow rate of exhaust gas exiting a gas exchange device (110) coupled to the circulatory system of a patient (10) is disclosed. The gas exchange device is configured to provide oxygen-rich blood to the circulatory system by exposing oxygen-deficient blood to oxygen provided by an incoming gas and to allow the passage of excess oxygen into the exhaust gas. The method involves the step of determining the total flow rate of exhaust gas from the concentration and flow rate of oxygen leaving the gas exchange device. The concentration is recovered from a sensor, while the flow rate is determined based on a mass equilibrium approach, and the amount of oxygen leaving the gas exchange device corresponds to the difference between the amount of oxygen supplied to the gas exchange device and the amount of oxygen absorbed by the blood during gas exchange.

The utility model discloses a kind of cooling cutting mechanism of master batch, including cooling box, transfer mechanism being arranged at the right end of cooling box, cutting device and cooling circulation assembly being installed in the middle end of cooling box, cooling box is hollow cuboid structure, cooling box left end is equipped with the feed pipe connected with external discharge pipe, cooling box inside is equipped with conveying belt, the top of the right end of conveying belt is equipped with baffle, cooling circulation assembly includes being arranged in the refrigerating unit of cooling box front side, the air outlet of refrigerating unit is connected with gas exchange tank by pipeline, gas exchange tank is equipped with exhaust fan inside, the cooling circulation loop design of the device closure reduces cooling loss, improve energy utilization efficiency, the limiting groove of cooling plate and air hole design, make cold air can uniformly act on material, promote cooling effect.

This invention relates to the field of water pump testing technology, specifically a water pump body air tightness testing machine. The invention includes a frame with a tray mounted on it. The tray contains a platform. A clamping part, an air supply part, and an air exchange part are all mounted on the top of the platform. The water pump body to be tested is clamped on the clamping part. A pressing part is provided on the inner side of the frame corresponding to the position of the pump body to be tested, for pressing against the upper side of the pump body. The air supply part includes a mounting bracket fixedly mounted on the top of the platform, a cylinder fixedly mounted on the mounting bracket, and an air supply assembly for supplying air to the pump body to be tested. The air exchange part consists of an air tank and an air exchange assembly for exchanging gas between the pump body to be tested and the air tank. This invention can quickly switch to a high-temperature state for air tightness testing after completing air tightness testing at room temperature, achieving multiple uses in one machine and automatically completing the rapid and stable clamping of the pump body.

This utility model discloses a multi-layer gas exchange culture dish for platelet culture, relating to the field of culture dish technology. It includes a culture dish body and a gas exchange mechanism. The gas exchange mechanism is located on the top of the culture dish body and includes a sealing cap threaded to the top of the culture dish body. A honeycomb-shaped vent plate is fixedly connected to the top of the sealing cap, and gas guide grooves are formed on the outer edge of the honeycomb-shaped vent plate. A breathable membrane is fixedly connected to the bottom of the honeycomb-shaped vent plate. The honeycomb-shaped vent plate is horizontally positioned on top of each sealing cap. Compared with existing ordinary culture dishes, this multi-layer gas exchange culture dish for platelet culture improves gas exchange efficiency, meets the dynamic gas requirements of platelet culture, maintains platelet activity, prevents platelet sedimentation during culture, ensures uniform distribution of platelets in the culture medium, and improves their contact efficiency with nutrients and gases.

Disclosed herein are fluidic devices that facilitate gas diffusion between biological samples and gas-filled compartments or an external atmosphere to stabilize dissolved gas levels within the biological samples. The fluidic devices can include a gas-permeable spacer separating the biological sample-containing channel from the gas-filled compartments or external atmosphere to facilitate rapid gas exchange within the biological sample. Further disclosed herein are methods of using the fluidic devices to incubate and determine characteristics of the samples, including methods for measuring cytokine secretion from individual cells.

The invention relates to the technical field of atomization equipment, and provides an atomization device and atomization equipment, and the atomization device comprises a first liquid storage bin which is provided with a gas outlet pipeline; the second liquid storage bin is provided with an inner cavity, an outer cavity and a liquid supplementing connector connected with the first liquid storage bin, the outer cavity is communicated with the liquid supplementing connector, a partition wall between the inner cavity and the outer cavity is provided with a plurality of micropore structures capable of being sealed by aerosol matrixes, and the atomization core assembly is arranged in the inner cavity and communicated with the air outlet pipeline; the outer cavity can supply liquid to the inner cavity through the microporous structure under the action of suction negative pressure, and gas in the inner cavity enters the outer cavity; the first liquid storage bin can supplement liquid to the outer cavity through the liquid supplementing connector under the action of suction negative pressure, and gas in the outer cavity enters the first liquid storage bin. According to the technical scheme, liquid supplementing ventilation and liquid feeding from the outer cavity to the inner cavity are carried out only under the action of suction negative pressure, the phenomena that liquid supplementing is difficult, liquid supply is not coherent and the liquid leakage phenomenon caused by too large pressure of the inner cavity can be effectively prevented, the use experience can be improved, and the device is applied to small-size equipment.

A thermally balanced filler bone graft scaffold includes a scaffold shell and a base. The scaffold shell has an inner cavity. The base has a multi-purpose chamber at its tail end and a heat convection tube assembly at its head end. The multi-purpose chamber is connected to the surface of the head end of the base via the heat convection tube assembly. The heat convection tube assembly connects the inner cavity of the scaffold shell with the multi-purpose chamber of the base. This provides a stable support base, promotes the bone integration process, achieves thermal balance of the overall scaffold, appropriately increases the internal temperature of the femoral head, accelerates local blood circulation in the femoral head, enhances cell activity, accelerates metabolism, promotes the proliferation and differentiation of osteocytes and other related cells, promotes angiogenesis and bone repair, facilitates gas exchange, promotes the drainage of effusion and gas, continuously releases intraosseous pressure, and provides storage space and pathways for therapeutic drugs and / or nutrients. This implant achieves multi-system synergy and promotes overall rehabilitation.

This invention discloses an automated stem cell culture chamber with precise temperature and humidity control, comprising a chamber body, a culture tray, a diffusion frame positioned above the culture tray, an adjusting and sealing mechanism, and an oxygen absorption mechanism. The diffusion frame has a first and a second permeable membrane along the arrangement direction of the culture containers. The first permeable membrane forms an oxygen supply interface, and the second permeable membrane forms a hypoxia communication interface with the oxygen absorption box. The adjusting and sealing mechanism limits the effective exposure area of ​​the two permeable membranes respectively through a first sealing plate. The oxygen absorption box contains oxygen-absorbing material and can be moved closer to or further away from the second permeable membrane to change the volume of the hypoxia buffer chamber. A second sealing plate is provided on the ventilation side of the oxygen absorption box to adjust the ventilation opening area. Thus, without changing the position of the culture tray, by adjusting the gas exchange conditions on the oxygen supply side and the hypoxia side, an adjustable oxygen concentration gradient environment is formed above the culture tray, suitable for stem cell hypoxia induction, differentiation comparison, and drug response culture experiments.

The application discloses sunflower oil processing oil pressing equipment, relates to the technical field of oil pressing equipment, and optimizes and improves the problems of temperature loss of control, poor pressure and oil yield coordination, and limited oil quality and oil yield in the traditional sunflower oil pressing process, and is characterized by a through-hole cooling assembly and a moving main shaft. A gas exchange sliding sleeve and a directional special-shaped sleeve are arranged in equidistance correspondence on a central through pipe, the inside of the moving main shaft is divided into multiple independent cavities, one end of the central through pipe performs a ventilation action, a gas exchange port is arranged at the other end of the moving main shaft to form a gas circulation passage, and a cooperative management system is additionally arranged. The pressure and temperature sensing assemblies in the independent cavities collect data in real time, ventilation parameters and pressure parameters are reversely linked and controlled, local cavity precise air / gas supplementing can be realized through an auxiliary through rod, a partition precise temperature control and pressure-temperature cooperative control process are formed, the oil yield and quality of sunflower oil are effectively improved, and energy consumption and raw material waste are reduced.

This utility model provides a respiratory training device for geriatric patients, relating to the field of respiratory technology. It includes a three-way tube with annular screw grooves at each of its three ends. A fixed nozzle, a vertical cylinder, and a horizontal cylinder are respectively threaded onto and connected to the three ends of the three-way tube within the annular screw grooves. The bottom of the vertical cylinder has symmetrical fan holes, and the inner wall of each fan hole has a circular cavity. A first fan plate is embedded inside the circular cavity. A sphere is embedded inside the vertical cylinder. The inner wall of the horizontal cylinder has an L-shaped annular groove, and an L-shaped conical toothed ring is embedded and rotatably connected inside the L-shaped annular groove. A second fan plate is fixedly connected inside the L-shaped conical toothed ring. This utility model can flexibly achieve bidirectional training of inhalation and exhalation, adapting to the different respiratory rehabilitation needs of elderly patients, comprehensively exercising respiratory muscles, optimizing breathing patterns, improving lung ventilation and gas exchange functions, and assisting in the rehabilitation of lung diseases and the recovery of postoperative respiratory function.

A blood processing apparatus includes an optional heat exchanger and a gas exchanger disposed within a housing. In some instances, the gas exchanger can include a screen filter spirally wound into the gas exchanger such that blood passing through the gas exchanger passes through the screen filter and is filtered by the spirally wound screen filter a plurality of times.

The application discloses an atomizer and an atomization device thereof. The atomizer comprises a shell, an internal storage cavity for storing a liquid substrate, a support, an atomization core arranged on the support for atomizing the liquid substrate to generate an aerosol, a first gas exchange channel arranged between the support and the atomization core, an air outlet channel configured to guide the aerosol, an air inlet channel configured to guide air flow to the atomization core, the first gas exchange channel and the air outlet channel, and an air guide pipe connected to the support, wherein a second gas exchange channel is formed in the air guide pipe, and the second gas exchange channel is communicated with the storage cavity and the first gas exchange channel to exchange gas between the first gas exchange channel and the storage cavity. In this way, the air guide pipe is arranged to communicate the storage cavity and the first gas exchange channel, so as to prevent the first gas exchange channel on the support from being blocked by the liquid substrate with high viscosity, thereby helping to prevent the atomization core from being dry-burned.

1. The name of the design product: nuclear pore membrane air conditioning window. 2. The use of the design product: for packaging box in the wet, temperature control, gas exchange. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model discloses a kind of respiratory air path switching devices, comprising: breathing main pipeline;First air chamber, connected with breathing main pipeline;Second air chamber, connected with breathing main pipeline;Air supply component, between first air chamber and second air chamber are set, so that airflow enters second air chamber from first air chamber;Gas exchange chamber, connected with outside, simultaneously connected with first air chamber and second air chamber;First switch valve, set in first air chamber, for switching the gas flow direction in first air chamber;Second switch valve, set in second air chamber, for switching the gas flow direction in second air chamber.Gas exchange chamber includes air inlet chamber and exhaust chamber, air inlet chamber and exhaust chamber are communicated, and are connected with outside by pipeline, air inlet chamber is connected with first air chamber, exhaust chamber is connected with second air chamber.The problem that the existing breathing switching equipment line layout is complex, control program is also complex, inconveniently switching the air intake and air outlet of trachea is solved.

A method (200) for determining a total flow rate of exhaust gas leaving a gas exchange device (110) coupled to a circulatory system of a patient (10) is disclosed. The gas exchange device is configured to provide oxygen-rich blood to the circulatory system by exposing oxygen-poor blood to oxygen provided by an inlet gas and to allow excess oxygen to enter the exhaust gas. The method involves determining the total flow rate of the exhaust gas from a concentration and a flow rate of oxygen leaving the gas exchange device. The concentration is retrieved from a sensor, while the flow rate is determined based on a mass balance approach, wherein the amount of oxygen leaving the gas exchange device corresponds to the difference between the amount of oxygen supplied to the gas exchange device and the amount of oxygen taken up by the blood during gas exchange.

The utility model provides a lower limbs rehabilitation exoskeleton rheostatic ankle joint, rehabilitation exoskeleton technical field. To solve the technical problem that the resistance of exoskeleton cannot be adjusted according to the output force when the ankle joint is rehabilitated. Leg fixed component and foot fixed part articulate, and this design allows the ankle joint to move freely within a natural range, improves the comfort and rehabilitation effect of the patient, a gas discharge assembly is slidably arranged in the gas exchange part to divide the cavity into two chambers, each chamber is communicated with an exchange hole at the two ends of the gas exchange part, and the gas discharge assembly is coupled with the foot fixed part. When the gas discharge assembly moves, the corresponding exchange hole becomes smaller, the space of the chamber is gradually compressed, and the compression speed is determined by the speed of gas discharge from the exchange hole, thereby realizing the rheostatic effect and simulating the resistance change in natural gait.

Systems and methods are provided for mixing and gas exchange in bioreactors, particularly small-volume and high-aspect-ratio bioreactors such as wells of multi-well plates. A movable displacement body is positioned within a vessel containing a liquid culture medium and is periodically moved relative to the vessel to displace and mix the medium. The displacement body includes or is associated with a gas exchange interface that permits transfer of gases between the gas exchange interface and the liquid culture medium during movement of the displacement body. Mixing and gas exchange occur concurrently as a result of displacement-based flow, enabling efficient oxygenation, carbon dioxide removal, and environmental control while limiting shear stress and avoiding gas sparging.

The utility model discloses a kind of self-adhesive wound protective stickers, including supporting base layer, release paper and adhesive layer, the center of supporting base layer bottom is provided with cavity, the edge position of inside of cavity is provided with antibacterial layer, antibacterial layer below is provided with hemostatic absorbent cotton layer, the inside of hemostatic absorbent cotton layer is uniformly provided with analgesic powder and hemostatic powder, and the inside of antibacterial layer above hemostatic absorbent cotton layer is provided with drug sustained-release layer, the inside of drug sustained-release layer is uniformly provided with biodegradable material bag, the inside of each biodegradable material bag is filled with healing drug.The breathable film layer of the utility model is arranged on the top of antibacterial layer, below the secondary waterproof film layer, this design not only ensures waterproof effect, but also can tear the secondary waterproof film layer when necessary, allow the gas exchange of skin at wound, avoid the skin stuffy, uncomfortable and other problems caused by poor breathability, improve the use experience of patient.

Provided is a blood circulation circuit capable of reducing manufacturing costs and maintenance costs. A blood circulation circuit (1) includes a blood removal line (2) that removes venous blood, a blood reservoir (4) that is connected to the blood removal line (2) and stores blood that has flowed through the blood removal line (2), a negative pressure adjustment device (6) that adjusts the negative pressure inside the blood reservoir (4), a blood pump (5) that transports the blood of the blood reservoir (4), an artificial lung (7) that performs gas exchange on the blood that has been sent from the blood pump (5), and a blood recovery line (3) that is connected to the blood reservoir (4) and sucks blood from a surgical site by the negative pressure of the blood reservoir (4).

An oxygenator including a housing defining an interior having improved gas exchange fluid pathways and / or heat exchange fluid pathways is disclosed. In some instances, the oxygenator includes a gas exchange fluid pathway for passing a gas sequentially from a gas exchange fluid inlet, through one or more layers of gas exchange fibers extending in a first direction, through one or more layers of gas exchange fibers extending in a second direction, and out a gas exchange fluid outlet. In some instances, the oxygenator includes a partition dividing the interior between a gas exchange chamber and a gas-and-heat exchange chamber. In some instances, the housing includes an insulating fluid barrier chamber configured to be filled with a flowing heat exchange fluid from the heat exchange fluid inlet to provide an insulating barrier between outflow ends of the gas exchange fibers and the gas exchange fluid outlet.

This invention belongs to the technical field of biomedical materials, artificial organs, and extracorporeal circulation support devices, and relates to a hydrophilic modified siloxane hollow fiber composite membrane, its preparation method, and its applications. The hydrophilic modified siloxane hollow fiber composite membrane consists of a porous hollow fiber base membrane and a dense hydrophilic organosilicon functional layer constructed on the outer surface of the porous hollow fiber base membrane. Based on the hydrophilic modified siloxane hollow fiber composite membrane, this invention further constructs a small membrane oxygenator based on this composite membrane, which can be used for extracorporeal circulation gas exchange and is suitable for establishing animal extracorporeal circulation models and preclinical experimental studies. This device features a compact structure, high gas exchange efficiency, low blood damage, and good operational stability.

The application discloses a gas precise replacement type water pollution water sample volatile sampling device, relates to the technical field of water sample volatile sampling, and comprises a mounting bracket, a movable block movably mounted on the mounting bracket, an exhaust pipe and a gas injection pipe mounted on the movable block, a sample bottle provided on the mounting bracket and a gas exchange piston movably arranged in the sample bottle; and a gas exchange mechanism, which comprises a first sealing rubber ring, a ventilation groove, a gas closing ball and a rotating column, the first sealing rubber ring is fixedly installed in the gas exchange piston, the ventilation groove is arranged above the gas exchange piston, the gas closing ball is movably arranged in the ventilation groove, and the rotating column is fixedly installed at the center position of the gas exchange piston. Through the movable gas exchange piston, the intermittent exhaust mode is adopted, the headspace of the sample bottle is continuously replaced, the liquid and the headspace always maintain a high concentration difference, and the precipitation efficiency of volatile organic compounds is increased.

This utility model discloses a tail gas absorption tower, which includes an outer shell and an inlet pipe. The inlet pipe is disposed on the outer periphery of the bottom end of the outer shell. A base is disposed at the bottom end of the outer shell, and a waste liquid tank is disposed at the lower end of the base. A spray pipe is disposed at the top end of the outer shell, and an adsorption mechanism is disposed between the spray pipe and the inlet pipe. A recovery pipe is disposed at the upper end of the base, and a disassembly mechanism is disposed between the recovery pipe and the waste liquid tank. This tail gas absorption tower, through the adsorption mechanism disposed between the spray pipe and the inlet pipe, enables gas exchange inside the absorption tower, and also allows gas flow when the tail gas pressure is insufficient. The disassembly mechanism disposed between the recovery pipe and the waste liquid tank allows the waste liquid tank to be replaced, and the condition of the waste liquid inside the tank can be determined based on the tail gas condition at the time of replacement, so as to better treat the waste liquid.