35results about How to "Avoid rebreathing" patented technology

A mesh crib bumper enclosure having four connected vertical mesh fabric panel sections installed in a crib by suspending it from top and bottom corners and securing it to four corner posts. The enclosure panels are stretched tightly between the corner posts using a locking fastener. The mesh fabric panels allow air to circulate through the crib to prevent exhaled carbon dioxide from building up. The enclosure corners receive vertical support members for vertical structural integrity while top and bottom edges can receive horizontal support members for horizontal structural integrity. The enclosure bottom corners use tie string fasteners to secure the enclosure to bottom crib rails to keep the bottom edges in contact the mattress. Other embodiments use a mesh panel base attached to the enclosure bottom and / or a mesh panel sealable top for sealing off the top to prevent insects and animals from entering the mesh crib bumper enclosure.

A mesh crib bumper enclosure having four connected vertical mesh fabric panel sections installed in a crib by suspending it from the top and bottom corners and securing it to the crib's four corner posts, the same way ropes are suspended in a boxing ring. The mesh crib bumper enclosure's four mesh fabric panels are stretched tightly between the four corner posts using a locking fastening means. The mesh fabric panels allow air to circulate through the crib, preventing the baby's exhaled carbon dioxide from building up in the crib cavity and the possibility of Sudden Infant Death Syndrome (SIDS). Each of the taut mesh fabric panels acts a trampoline surface preventing a baby from impacting the crib's balusters or getting lodged between the crib's vertical balusters and rails. Each of the mesh crib bumper enclosure's four corners receives vertical support members for vertical compression structural integrity. The mesh crib bumper enclosure's top and bottom seam edges on the head and foot sections and / or side sections receives horizontal support members for horizontal compression structural integrity. Each of the mesh crib bumper enclosure's bottom four corners uses tie string fasteners for securing the mesh crib bumper enclosure to the bottom crib rails, keeping the bottom edges of the mesh crib bumper enclosure in continual contact with the top surface of the mattress. Another embodiment of the mesh crib bumper enclosure, uses a mesh panel base attached to the four bottom edges of the mesh crib bumper enclosure. Another embodiment of the mesh crib bumper enclosure, uses a mesh panel base attached to the four bottom edges of the mesh crib bumper enclosure and a mesh panel sealable top for sealing off the top section and preventing insects and animals from entering the mesh crib bumper enclosure.

A method to maintain isocapnia for a subject. A fresh gas is provided to the subject when the subject breathes at a rate less than or equal to the fresh gas flowing to the subject. The fresh gas flow equal to a baseline minute ventilation minus a dead space gas ventilation of the subject contains a physiological insignificant amount of CO2. An additional reserve gas is provided to the subject when the subject breathes at a rate more than the fresh gas flowing to the subject. The reserve gas has a partial pressure of carbon dioxide equal to an arterial partial pressure of carbon dioxide of the subject. A breathing circuit is applied to the method to maintain isocapnia for a subject. The breathing circuit has an exit port, a non-rebreathing valve, a source of fresh gas, a fresh gas reservoir and a reserve gas supply.

A respiratory face mask is provided suitably sized and configured to engage at least the nose portion and mouth portion of a patient's face. Gas from a gas supply and scavenging set normally used in dentistry is operatively coupled to the mask via a breathing circuit to supply fresh gas and evacuate exhaled waste gas. A gas flow compensator in the breathing circuit automatically prevents re-breathing of exhaled gas. Because the mask has a sealing cushion, contamination of the clinical room where the apparatus is being used also is avoided.

A disposable breathing circuit is adapted to be connected between a disposable face mask and a vacuum source for delivering fresh gas to the face mask and for scavenging waste gas exhaled from the face mask. The breathing circuit includes a fresh gas supply limb and an exhalation limb and a scavenging limb coupled to the exhalation limb. The scavenging limb includes a one-way valve to prevent re-breathing, a flexible flow-through reservoir bag used to store exhaled gas, and an output tube adapted to be coupled between the flow-through reservoir bag and the vacuum source.

A disposable breathing circuit is adapted to be connected between a disposable face mask and a vacuum source for delivering fresh gas to the face mask and for scavenging waste gas exhaled from the face mask. The breathing circuit includes a fresh gas supply tube, a flexible flow-through exhalation bag, an exhalation tube disposed between the face mask and an entry port of the exhalation bag, and a scavenging tube disposed between an exit or of the exhalation bag and the vacuum source. The exhalation tube includes a one-way valve to prevent re-breathing.

A portable device for collecting and sterilizing the flying saliva of SARS patient is composed of a face mask with air or oxygen inlet and air outlet connected to sterilizer via a tube, and a sterilizer consisting of disinfectant storage, coiled exhaust tube, and air-drawing fan installed in its exhaust outlet. Its advantages are simple structure and high effect on cutting off the infection source.

The invention discloses an evaporative cooling air conditioning unit with a catkin filtering function. A unit shell is included. According to the structure of an upper air duct, the left side of the upper air duct is provided with an inclined exhaust duct, and an inclined exhaust outlet is formed in the upper portion of the exhaust duct; and according to the structure of a lower air duct, an air inlet and an air supply port are formed in the two opposite side walls of the unit shell. A vertical pipe indirect evaporative cooling unit and a mechanical refrigeration unit are arranged in the center in the lower air duct, a rotating wheel type filter is arranged on the left side of the lower air duct, a dust removal area of the rotating wheel type filter is located in the lower air duct, a regeneration area is located in the upper air duct, and a coarse-effect filtering section is arranged between the dust removal area of the rotating wheel type filter and the vertical pipe indirect evaporative cooling unit. According to the evaporative cooling air conditioning unit with the catkin filtering function, the rotating wheel type filter, mechanical refrigeration and evaporative cooling are combined, and the problem that in the prior art, due to the fact that a coarse-effect filter screen cannot filter wind sand or catkins, the operation efficiency is reduced is solved.

The invention discloses a cylinder head component and a compressor with the same. The cylinder head component comprises a cylinder cap, a cylinder cap cover plate, a cylinder cap gasket, a valve plate and a cover plate gasket, wherein the cylinder cap cover plate is connected with the cylinder cap; the cylinder cap gasket is arranged between the cylinder cap cover plate and the cylinder cap so as to seal a fit clearance between the cylinder cap and the cylinder cap cover plate; the valve plate is connected with the cylinder cap cover plate; a lift limiter is arranged on the valve plate; a limiting part used for pressing the lift limiter is arranged on the cylinder cap cover plate; and the cover plate gasket is arranged between the cylinder cap cover plate and the valve plate so as to seal a fit clearance between the cylinder cap cover plate and the valve plate. According to the cylinder head component in the embodiment of the invention, the flow of a refrigerant is guaranteed, so that the refrigerating capacity of the compressor is improved; the noise of the compressor can be effectively reduced, and the noise stability of the compressor is comprehensively improved; and moreover, the limiting part for limiting the lift limiter on a traditional cylinder cap is transferred to the cylinder cap cover plate, and the strength of the cylinder cap can be effectively improved.

The invention relates to an adjustable exhalation valve for a non-invasive ventilator. The adjustable exhalation valve comprises a valve body, wherein the lower end of the valve body is connected with a connecting tube; a tube joint is respectively arranged on each of the two ends of the connecting tube; a beam is arranged at the upper end of the valve body; a rotary shaft is arranged on the middle part of the valve body; a left valve plate and a right valve plate are hinged with the rotary shaft; the left valve plate is connected with the beam by a left spring; and the right valve plate is connected with the beam by a right spring. According to the adjustable exhalation valve for the non-invasive ventilator disclosed by the invention, the exhalation valve is arranged on a pipeline of the non-invasive ventilator, so that the gas rushes through the left and the right valve plates in the exhalation valve when the gas pressure in a mask is extremely large, and the left and the right valve plates are opened by rotating around the rotary shaft, and therefore, the ventilating purpose is achieved; when the gas pressure in the mask returns to the treatment pressure range, the left and the right valve plates are returned under the action of the spring, and therefore, the pressure in the mask is effectively enabled to be stable. Meanwhile, excessive gas, in particular carbon dioxide gas, in the mask can be timely exhausted out, so that the non-invasive positive pressure ventilating treatment effect of the mask is ensured.

The invention discloses a nursing mask for respiratory medicine for automatically controlling oxygen inhalation concentration, and relates to the technical field of medical treatment. The nursing maskcomprises a mask main body, wherein a nose mask is fixedly connected inside the mask main body, an exhalation air pipe is communicated with the nose mask, the other end of the exhalation air pipe penetrates through the mask main body and extends to outside of the mask main body, a first one-way valve is arranged in the exhalation air pipe, an inhalation air pipe is communicated with the nose mask, and the other end of the inhalation air pipe is communicated with an inner space of the mask main body. According to the nursing mask, oxygen concentration of gas in the mask main body can be automatically controlled and adjusted through the cooperation among an air pipeline, an oxygen gas pipeline, an electromagnetic valve, an oxygen concentration sensor and a main control box, the nose mask isarranged in the mask main body, and is matched with the exhalation air pipe, the first one-way valve, the inhalation air pipe and a second one-way valve, so that repeated inhalation of exhaled gas containing a large amount of carbon dioxide by a patient can be avoided.

The invention relates to a three-dimensional mask which comprises a mask unit, two hanger parts and a separating piece. The mask unit comprises a body, a nose coverage body and a chin coverage body, wherein the nose coverage body is connected at the top end of the body, and the chin coverage body is connected at the bottom end of the body. The hanger parts are respectively placed on two sides of the mask unit, and the separating piece is connected on the body. When in use, a nose usage space is formed by the body, the nose coverage body and the separating piece in a matched mode, a mouth usage space is formed by the body, the chin coverage body and the separating piece in a matched mode, and the nose usage space and the mouth usage space are separated and not communicated. By means of the three-dimensional mask, the problem that germs are repeatedly inhaled by a user can be avoided, and effect of health care can be improved.

The invention belongs to the technical field of tobacco equipment and discloses a smoke treatment device. The device includes a cigarette holder and a device body; the cigarette holder is provided with a smoke sucking passage and a smoke spitting channel which are separated from each other; the cigarette holder is arranged on the device body, and the device body is provided with a cigarette containing chamber and a smoke chamber which are separated from each other; one end of the cigarette containing chamber is in communication with the smoke sucking passage, the inner wall of the cigarette containing chamber and / or the smoke sucking passage is provided with a cigarette clamping structure, and the other end of the cigarette containing chamber is provided with an air suction port; and the smoke chamber is in communication with the smoke spitting channel, the smoke chamber is internally provided with a smoke filtering device, the smoke chamber is provided with a gas outlet, and the gas outlet is located on the exhaust side of the smoke filtering device. By means of the smoke treatment device in the embodiment, the smoke sucking passage and the smoke spitting channel are separated, and the filtering device is used for filtering smoke, so that a smoker is prevented from repeated second hand smoking during smoking, and meanwhile, harms caused by second hand smoking diffusion on surrounding people are avoided.

The invention relates to an air-cooled diesel generator cabinet assembly capable of improving heat dissipation efficiency. The air-cooled diesel generator cabinet assembly comprises an engine assembly and a generator assembly; the generator assembly is fixed on the engine assembly, and a bracket is fixed on a cabinet base; and a heat insulation inner container is fixed to the engine assembly, and a silencer is fixed to the engine assembly and a left side baffle. The air-cooled diesel generator cabinet assembly is characterized by further comprising the left side baffle, a right side baffle and a motor gas inlet cover, the motor gas inlet cover is fixed to the generator assembly and tightly attached to a fifth cabinet base air inlet, and a cabinet middle frame is fixed to the cabinet base; the left side baffle is fixed on the cabinet middle frame and the cabinet base; a silencer heat insulation cover is fixed on the left side baffle; and the right side baffle is fixed on the cabinet middle frame and the cabinet base. By means of the air-cooled diesel generator cabinet assembly, cold air and hot air are completely isolated and do not interfere with each other, cooling air drives air in a unit to flow, the heat dissipation efficiency is greatly improved, each air inlet is provided with a baffle, and the effects of repeatedly rebounding sounds and reducing noise are achieved.

The invention discloses a wearable air-purifying face mask. The wearable air-purifying face mask comprises a face mask body, face mask belts, a substrate, a miniature negative-ion generator, a miniature lithium polymer battery, a USB interface, silicone tubes and a control switch. For the face mask body, a primary filtering layer is waterborne non-woven fabric, a secondary filtering layer is high-density static non-woven fabric, a tertiary filtering layer is superfine composite fibers, the two face mask belts are respectively mounted on two side edges of the face mask body, the substrate is made of polypropylene, and is positioned between the two layers of non-woven fabrics outside the right side of the face mask body, the miniature negative-ion generator is mounted on the central left side of the miniature lithium polymer battery, and the plurality of groups of silicone tubes are sewn between the outer two filtering layers. For the wearable air-purifying face mask, the miniature negative-ion generator generates small-grain-diameter anions beneficial for the human health, and achieves the air purifying capacity, the miniature lithium polymer battery can be used for providing electricity for a long time, the limitation of electricity using time is avoided, and the using range and convenience are improved.

The present invention relates to a method for protecting a ventilation device of a ventilator against backflowing exhaled air, and to a ventilator. A respiratory gas flow is generated by a blower device and is guided via a flow connection to a breathing interface. The respiratory gas flow is adjusted with the aid of a control device to a first ventilation pressure during an inhalation phase of the patient and to a second ventilation pressure during an exhalation phase. A characteristic variable for a flow within the flow connection is detected by a device for monitoring backflowing exhaled air. A back pressure with respect to the backflowing expiratory flow is adjusted by a specific increase of the ventilation pressure taking into consideration the characteristic variable, whereby an undesirable rebreathing into the ventilation device is counteracted by the back pressure.

Provided is a flat surface respirator. The flat surface respirator comprises a respirator body, a nose bridge press strip, a philtrum press strip and two ear hanging portions. The respirator body comprises a middle portion, a nose covering portion arranged at the top end of the middle portion, and a mouth covering portion arranged at the bottom end of the middle portion. The philtrum press strip is installed on the middle portion. The ear hanging portions are respectively arranged on two sides of the respirator body. Therefore, using space of a nose portion and using space of a mouth portion are separated and are not communicated, pathogenic bacteria can be prevented from being repeatedly inhaled by a user, and a health care effect can be improved.

The invention discloses an assistant breathing device for the mask wearing condition. The assistant breathing device comprises a support frame, an output air pipe, an air delivery pipe and an air blower, wherein the two ends of the support frame are each provided with a binding hole for mounting an elastic band, the lower end of the support frame is provided with two support frame lifting lugs, and the support frame lifting lugs are used for mounting and fixing the output air pipe; one end of the output air pipe is closed, the other end of the output air pipe is connected with the air deliverypipe, and the output air pipe is upwards provided with air delivery ports; the air delivery pipe is connected with an output port of the air blower, a suction inlet of the air blower is provided witha filter screen, and a motor of the air blower is connected with a power plug through a wire. According to the assistant breathing device, filtered and qualified fresh air is conveyed into the part near the nostrils through the pipe, foul air remaining in a cavity formed between the face of a human body and a mask is blown away at the time of reducing the breathing resistance to prevent the foulair from being sucked into the body, the breathing efficiency is improved, and the adverse effects such as oxygen deficiency and chest distress caused by wearing the masks on people is relieved or eliminated.

The invention relates to a hoisting device for a river course, comprising a driver, a connecting rod, a lifting device, a rotating motor, a hook and a dredging protection device. The connecting rod is a detachable limited swing connecting rod, and the dredging protection device realizes the cleaning of the river bottom sediment through the water suction nozzle. The device of the invention can be applied to the complex environment inside the river channel, making it possible to safely hoist the objects at the bottom of the river.

A patient valve for ventilating a patient with a ventilator, including a first valve element having at least one connection, wherein the at least one connection is oriented with the central axis thereof at an angle deviating from the vertical position in relation to the patient valve central axis, such that a shortened patient valve having a reduced dead space volume is supported.

The invention discloses a method and a device for urging snails to spit out sediment. The device for urging snails to spit out sediment is provided with a box body, a water distribution pipe, a static bed, an overflow plate, a settling tank and a water circulation system; the device for urging snails to spit out sediment The method is to place a static bed in the box, then add snails to the static bed, and evenly arrange the snails. After installing the snails, open the tap water valve and slowly add tap water. The water storage height is 45-50cm; then continue to slowly add tap water to the circulating water valve Overflow; or start the circulation pump; control the water temperature at 15-30°C; add emetic salt and 2-methyl-3-mercaptofuran to the storage water when the snails are left to spit sand, and replace the equipment every 3 hours Store water in the middle, and increase the water flow to take away the sediment. The invention can clean up the mud and sand in the body of the snail within 8 hours, increases the time for the snail to spit out the sand several times, has remarkable effect, and is suitable for industrialized production.

This invention is a device to be used with a system for supplying anaesthetic or respiratory gases into the airway of a human or an animal. This device is a face mask, which includes a main body or ‘shell’ which is lined with one or more air filled cuffs of which at least one cuff is closely reflecting the airway pressures generated inside the shell during the various phases of the respiratory cycle and is inflated by the gases supplied directly from the anaesthesia or ventilator circuit through a specialised adaptor and a dedicated inflation port. Many other advantages of the invention will be apparent from reading the description which follows in conjunction with the accompanying drawings

The invention relates to a self-service respiration caccule and a self-service power-driven respiration system. The self-service power-driven respiration system comprises a caccule (1), an oral cavity connecting part (6) and a nasal cavity connecting part (7), and is characterized in that the upper opening and the lower opening of the caccule (1) are respectively provided with an upper one-way airvalve (2) and a lower one-way air valve (3), and the upper one-way air valve (2) is directly or indirectly communicated with the inner cavities of the oral cavity connecting part (6) and the nasal cavity connecting part (7); the caccule (1) comprises a caccule body (1-1), the inner cavity of the caccule body (1-1) is sequentially provided with a heat insulating pipe (1-2), a heater (1-3), a humidifier (1-5) and an oxygen pipe (1-4), and the air inlet of the oxygen pipe (1-4) is communicated with the air outlet end of the lower one-way air valve (3); and both ends of the heat insulating pipe (1-2) are directly communicated with the air inlet of the upper one-way air valve and the air outlet of the lower one-way air valve (3). The self-service power-driven respiration system has simple operation, and patients with certain capacities for actions can operate the self-service power-driven respiration system by themselves so that the invention is widely suitable for the patients outside hospitals; and the self-service power-driven respiration system has the advantages of simple structure, convenient use and wide application range.

The invention relates to an engine heat dissipation system used for a railway engineering mechanical vehicle. The engine heat dissipation system comprises a radiator assembly (1), a bracket assembly (2) and a movable shutter (5), wherein the radiator assembly (1) is supported by the bracket assembly (2); the radiator assembly (1) comprises a radiator framework (9), an electric motor (6), a heat dissipation fan (7) and a radiator core body (8) which is horizontally arranged on the top of the radiator assembly (1), so that floor space is saved; four asynchronous motors drive the heat dissipation fan (7) to dissipate heat for the radiator core body (8), and the heat dissipation fan (7) sucks air inside a vehicle body and then perpendicularly blows the air to the outside of a vehicle top after passing through the radiator core body (8), so that exchange between air inside the vehicle body and air outside the vehicle body can be effectively promoted, and hot air is prevented from being repeatedly sucked into the vehicle body.

The invention discloses a method for preparing a high-temperature alloy disc for an aero-engine, which comprises (1) preparing high-temperature alloy powder; (2) electrostatically removing impurities from the prepared high-temperature alloy powder; (3) electrostatically removing impurities from the high-temperature alloy powder Carry out vacuum degassing, and then use an injector to deposit superalloy powder on a copper annular depositor to obtain a disk blank; (4) use isothermal forging to densify the obtained disk blank; (5) process the obtained disk blank heat treatment. Through the preparation method of the high-temperature alloy disk for aero-engines of the present invention, high-temperature alloy disks meeting the needs of new aerospace engines can be prepared.

The invention discloses a cylinder head component and a compressor with the same. The cylinder head component comprises a cylinder cap, a cylinder cap cover plate, a cylinder cap gasket, a valve plate and a cover plate gasket, wherein the cylinder cap cover plate is connected with the cylinder cap; the cylinder cap gasket is arranged between the cylinder cap cover plate and the cylinder cap so as to seal a fit clearance between the cylinder cap and the cylinder cap cover plate; the valve plate is connected with the cylinder cap cover plate; a lift limiter is arranged on the valve plate; a limiting part used for pressing the lift limiter is arranged on the cylinder cap cover plate; and the cover plate gasket is arranged between the cylinder cap cover plate and the valve plate so as to seal a fit clearance between the cylinder cap cover plate and the valve plate. According to the cylinder head component in the embodiment of the invention, the flow of a refrigerant is guaranteed, so that the refrigerating capacity of the compressor is improved; the noise of the compressor can be effectively reduced, and the noise stability of the compressor is comprehensively improved; and moreover, the limiting part for limiting the lift limiter on a traditional cylinder cap is transferred to the cylinder cap cover plate, and the strength of the cylinder cap can be effectively improved.

The invention discloses a manipulator suction cup with auxiliary bearing mechanisms. The manipulator suction cup with the auxiliary bearing mechanisms comprises a suction board, and a plurality of suction points in a matrix mode are arranged on the suction board; the four corners of the suction board are each provided with one auxiliary bearing mechanism; each auxiliary bearing mechanism comprisesa hollow columnar mounting rod vertically fixed to the lower surface of the suction board, and a rotary shaft is arranged inside a cavity of each mounting rod and is driven by a motor installed on the upper surface of the suction board to rotate; a cross rod is arranged on the lower side of each mounting rod; a containing groove is formed in one side of each cross rod; the inner wall of each containing groove is connected with fan-shaped bearing cloth; a guide rod perpendicular to each rotary shaft is fixed to the position, at the height corresponding to the corresponding containing groove, of the rotary shaft; and the other sides of the fan-shaped bearing cloth are connected with the guide rods. When the manipulator suction cup with the auxiliary bearing mechanisms sucks boards, the fourcorners of the flexible boards can be borne, the success rate of board adsorption is improved, and the working efficiency of a manipulator is improved advantageously.

The invention discloses a preparation method of a high-temperature alloy plate for an aeroplane engine. The preparation method comprises the following steps that (1), high-temperature alloy powder isprepared; (2), the prepared high-temperature alloy powder is subjected to electrostatic impurity removal; (3), the high-temperature alloy powder after electrostatic impurity removal is subjected to vacuum degassing and is deposited on a copper annular depositing device through an injector to obtain a plate blank; (4), the obtained plate blank is subjected to densification treatment by isothermal forging; and (5), the obtained plate blank is subjected to heat treatment. The high-temperature alloy plate meeting the requirements of a novel aerospace engine can be prepared by the preparation method of the high-temperature alloy plate for the aeroplane engine.

The invention discloses a mechanical hand with auxiliary supporting mechanisms. The mechanical hand comprises a mechanical arm and a suction plate connected to the mechanical arm, the suction plate isprovided with a plurality of suction points which are arranged in a matrix manner, the mechanical hand is characterized in that four corner positions of the suction plate are each provided with one auxiliary supporting mechanism, each auxiliary supporting mechanism comprises an installation rod which is vertically fixed to the lower surface of the suction plate and is in a hollow column body shape, the cavity of each installation rod is internally provided with a rotating shaft, each rotating shaft is driven to rotate by a motor which is installed to the upper surface of the suction plate, the lower side of each installation rod is provided with a horizontal rod, one side of each horizontal rod is provided with a storage groove, the inner wall of each storage groove is connected with fan-shaped supporting cloth, the position, corresponding to the height of the corresponding storage groove, of each rotating shaft is fixedly provided with a guide rod which is perpendicular to the rotating shaft, and the other side of each fan-shaped supporting cloth is connected with the corresponding guide rod. According to the mechanical hand with the auxiliary supporting mechanisms, when plate materials are sucked, four corner positions of the flexible plate materials can be supported, the success rate of sucking the plate materials is increased, and improvement of the work efficiency of themechanical hand is facilitated.

The invention relates to hoisting equipment for a river channel. The hoisting equipment comprises a driver, a connecting rod, a lifting device, a rotating motor, a lifting hook and a desilting protection device, wherein the connecting rod is a detachable limited swing connecting rod, and the desilting protection device is used for cleaning silt at the river bottom through a water suction and injection nozzle. The equipment disclosed by the invention can be suitable for a complicated environment in the river channel, which makes it possible to hoist objects at the river bottom safely.