2702results about How to "Avoid inhalation" patented technology

Described here are devices for altering the flow of air in a respiratory cavity such as the mouth and nostrils of the nose. These methods and devices may be useful for affecting a physiologic benefit in patients suffering from a variety of medical diseases, particularly those that may benefit from “pursed-lip” breathing and non-invasive ventilation, such as COPD, heart failure, sleep apnea, and other medical disorders. The devices are typically removable devices that may be placed over or in a respiratory cavity to increase resistance to airflow within the respiratory cavity. Resistance to expiration may be selectively increased relative to inspiration. Removable oral and removable nasal devices are described. Oral and nasal devices that filter inhaled airflow of debris and allergens are also provided. A nasal device that increases patency of the nares is also provided.

The invention discloses an intake and exhaust system of a turbine engine. The intake and exhaust system of the turbine engine comprises an intake system and an exhaust system, wherein the intake system is connected with an intake port of the turbine engine, the exhaust system is connected with an exhaust port of the turbine engine, the intake system comprises an intake filter and an intake pipeline, the intake filter is connected with the intake pipeline, the intake filter adopts a V-shaped structure, and a rain shielding cap is arranged at the exhaust tail end of the exhaust system. The intake and exhaust system of the turbine engine has the beneficial effects that the air inlet area is large, the air inlet flow speed is lower, the service life of an air filter is long, the rain shieldingcap additionally arranged at the exhaust port avoids the rainwater deposition in an exhaust silencer, the condition that rainwater possibly flows backwards is avoided and damages the turbine engine,and an opening of the rain shielding cap is away from the intake port, so that exhausted waste gas is prevented from being sucked by the intake port, and the quality of inlet air is ensured.

An angled tissue cutting instrument comprises an angled outer tubular member rotatably receiving a flexible inner tubular member. The inner member has a flexible region in correspondence with an angle of the outer member. The flexible region comprises a helically cut length portion of an elongate tubular body of the inner member and a continuous solid flexible surface secured to an outer surface of the body along the helically cut length portion. A method of fabricating a flexible inner tubular member involves forming a helical cut through the solid wall of a length portion of a tubular body and securing a continuous solid flexible surface to the outer surface of the body along the helically cut length portion to form a flexible region.

Disclosed herein is a cannula assembly for directing the flow of material from an organ chamber, e.g., blood from the left chamber of the heart, and methods of placing the cannula assembly in fluidic communication with the chamber. The cannula assembly includes an elongate tubular member and a coupling assembly disposed at the distal end of elongate tubular member. The elongate tubular member includes a lumen extending from a distal opening at the distal end to a proximal opening at the proximal end. The coupling assembly includes a retaining element and a retention member configured to cooperate with each other and with the portion of the organ wall surrounding the opening in the wall to couple or anchor cannula system to the wall and to provide fluidic communication between the distal opening of the elongate tubular member and the organ chamber.

An implantable device for providing one-way flow of air through a lumen in a human lung to reduce the volume of air trapped in a diseased portion of the lung by occluding the lumen to prevent inhalation while permitting expiration out of the diseased portion. The implantable device is deployable in the lumen with a catheter. The device comprises an umbrella-shaped, one-way valve. The valve is collapsible for containment within a catheter and expandable in situ when deployed to occlude the lumen. The valve defines a longitudinal axis and comprises a plurality of metal struts, a resilient membrane, and a central post. The device further comprises an anchor for securing the implantable device within the lumen. The anchor comprises a tapered distal end for penetrating the wall of the lumen, and a planar member positioned to limit advancement of the anchor into the lumen. The implantable device further comprises a mechanism connecting the one-way valve to the anchor. The mechanism is disposed along the longitudinal axis when the device is collapsed. The mechanism is configured to permit the valve to be oriented at an angle to said anchor when deployed. Accordingly, the anchor can be positioned in a section of the lumen that is at an angle to a section of said lumen in which said one-way valve is positioned.

An object of the present invention is to ensure the stable operation of a vacuum pump for discharging an unused source gas and reaction byproduct gases from a low-pressure processing chamber, to recover the reaction byproducts efficiently for the effective utilization of resources and reduction of running costs. A low-pressure CVD system has a processing vessel (10) for carrying out a low-pressure CVD process for forming a copper film, a source gas supply unit (12) for supplying an organic copper compound as a source gas, such as Cu(I)hfacTMVS, into the processing vessel (10), and an evacuating system (14) for evacuating the processing vessel (10). The evacuating system (14) includes a vacuum pump (26), a high-temperature trapping device (28) disposed above the vacuum pump (26) with respect to the flowing direction of a gas, and a low-temperature trapping device (30) disposed below the vacuum pump with respect to the flowing direction of a gas. The high-temperature trapping device (28) decomposes the unused Cu(I)hfacTMVS contained in a gas sucked out of the processing vessel (10) to trap metallic copper. The low-temperature trapping device traps Cu(II)(hfac)2 produced as a reaction byproduct.

A look-alike substitute for a cigarette, from which a smokeless aroma of burning tobacco or other fragrances can be inhaled and a smoke-simulating aromatized powder can be emitted out, comprises a first chamber lined with a scratch-releasable, flavor-coated insert and a second chamber filled with micrometric powder. The release of the aroma is triggered by scratching the insert with a built-in wire brush. The aromatic compound is preferably deposited on the inner surface of a replaceable hollow tube. A number of different flavored tubes are provided as part of a kit. A specially designed tip gives the appearance of glowing embers.

An implantable device for providing one-way flow of air through a lumen in a human lung to reduce the volume of air trapped in a diseased portion of the lung by occluding the lumen to prevent inhalation while permitting expiration out of the diseased portion. The implantable device is deployable in the lumen with a catheter. The device comprises an umbrella-shaped, one-way valve. The valve is collapsible for containment within a catheter and expandable in situ when deployed to occlude the lumen. The valve defines a longitudinal axis and comprises a plurality of metal struts, a resilient membrane, and a central post. The device further comprises an anchor for securing the implantable device within the lumen. The anchor comprises a tapered distal end for penetrating the wall of the lumen, and a planar member positioned to limit advancement of the anchor into the lumen. The implantable device further comprises a mechanism connecting the one-way valve to the anchor. The mechanism is disposed along the longitudinal axis when the device is collapsed. The mechanism is configured to permit the valve to be oriented at an angle to said anchor when deployed. Accordingly, the anchor can be positioned in a section of the lumen that is at an angle to a section of said lumen in which said one-way valve is positioned.

A blood pump system is implantable in a patient for ventricular support. A pumping chamber has an inlet for receiving blood from a ventricle of the patient. An impeller is received in the pumping chamber. A motor is coupled to the impeller for driving rotation of the impeller. A motor controller is provided for tracking systolic and diastolic phases of a cardiac cycle of the patient and supplying a variable voltage signal to the motor in a variable speed mode to produce a variable impeller speed linked to the cardiac cycle. The impeller speed comprises a ramping up to an elevated speed during the diastolic phase in order to reduce a load on the ventricle at the beginning of the systolic phase.

The invention discloses a medical mask which comprises a mask body and ear hanging lines. The ear hanging lines are arranged at two opposite side edges of the mask body, the mask body sequentially comprises a gauze layer, a moisture absorption layer, an antibacterial fiber cloth layer, a filter layer and a cotton cloth layer from inside to outside, the gauze layer, the moisture absorption layer, the antibacterial fiber cloth layer, the filter layer and the cotton cloth layer are connected with one another, a flexible iron wire is penetratingly arranged at the upper edge of the middle of the mask body, and a cotton cloth strip is sleeved on each ear hanging line. The medical mask has the advantages that the mask body comprises five layer structures and is good in breathability and moisture absorption, and dust and bacteria in air can be filtered; the medical mask is comfortable to wear, injury to the skin of a human body or the soft tissues of the ears of the human body can be prevented, the medical mask can fit with the face of the human body in a seamless manner, and accordingly harmful substances in the air can be effectively prevented from being inhaled into the human body; the flexible iron wire can be folded to form a shape which is matched with the nose bridge of the human body, so that gas exhaled by the human body can be prevented from being upwardly sprayed to spectacle lenses to cause the problem of blurring of the spectacle lenses.

An easy to use, squeezable device with a soft, flexible tube for feeding liquid nutrition to a person, includes:a) a squeezable bottle portion for holding the ingestible liquid therewithin, the bottle portion comprising an opening at its top surrounded by a neck; andb) a cap assembly comprising: flexible fluid-flow tubing, a spout or nipple assembly, and a threaded collar, an upper portion of the spout assembly being insertable through a central aperture in the collar, the flexible tubing having a first end in fluid communication with the bottle portion and a second end insertable in the patient's mouth, the flexible tubing extending through or encircling a central aperture in the spout assembly. The spout assembly preferably includes a leakproof flange, and a valve assembly for controlling flow. The device is particularly intended for use where suction such as nipples, straws, or sip cups are contraindicated after craniofacial surgery.

Antimicrobial compositions, especially those useful when applied topically, particularly to mucosal tissues (i.e., mucous membranes), including, in particular, a fatty alcohol ester of a hydroxycarboxylic acid, alkoxylated derivatives thereof, or combinations thereof. The compositions can also include an enhancer component, a surfactant component, a hydrophobic component, and / or a hydrophilic component. Such compositions provide effective topical antimicrobial activity and are accordingly useful in the treatment and / or prevention of conditions that are caused, or aggravated by, microorganisms (including viruses).

An oil lubricating structure includes a main body case (6) having a housing chamber (62a) in which a first dynamotor (2) is housed; an oil sump (7) which is provided below the main body case (6) and has an oil chamber in which oil collects; an oil supply portion which has an inlet port (75a) through which oil is drawn in from the oil chamber and which supplies oil collected in the oil chamber to the first dynamotor (2) through the inlet port; and an oil return hole (63a) which is formed in a bottom surface of the main body case (6) toward the front of the oil sump (7). A duct member (73) is provided in the oil chamber. One end portion (73a) of the duct member (73) is connected to the oil return hole (63a) and the other end portion (73b) of the duct member (73) is positioned farther to the rear than the inlet port (75a). Thus, an oil lubricating structure, which can prevent air from being sucked into the inlet port (75a) with the condition that the oil sump (7) and the main body case (6) are forward tipping when the vehicle is braked or move downwards, is provided.

The present invention relates to a device for treating obesity using cooling, the device comprising: a controller body for setting a cooling temperature and operating time, supplying cooling water for cooling a thermoelectric element, and providing suction force through a vacuum pump; a handpiece body for displaying operating conditions and providing suction force through a suction hole; a cable for connecting the controller body and the handpiece body; a suction cup mounted on the handpiece body to form a suction space; and cooling devices positioned on opposite sides of the suction cup to cool a part to be treated, which has been sucked into the suction space. Further, metallic cooling plates in-molded in a suction cup made of silicone make contact with the part to be treated via a thin silicone layer such that fat can be destroyed efficiently using a small amount of anti-freezing agent while protecting the skin.

The invention provides a haze-proof nano window screen manufacturing method. The method comprises the steps that polyamide 6 particles are added into a formic acid solution with the concentration ranging from 92% to 99% and are stirred at room temperature to be completely dissolved, and an electrostatic spinning solution with the polyamide 6 mass concentration being 13% is formed; an electrostatic spinning device is utilized for spraying the prepared electrostatic spinning solution on PET polyester fiber net window screen basic materials, and a layer of nanofiber membrane is formed on the PET polyester fiber net window screen basic materials; nanometer titania is sprayed on the nanofiber membrane. The haze-proof nano window screen manufacturing method has the advantages that the nanofiber membrane can effectively filter out various respirable fine suspended particles such as dust (containing PM2.5), coal dust, smog, fiber impurities and pollen in the air, indoor air is kept clean, and human health is facilitated; the nanometer titania can resolve hazardous substances in air into innocuous substance under the action of light, and the purposes of controlling bacterial reproduction and purifying air are achieved.

The invention relates to the field of high-speed railway pier construction, in particular to a pile head ring incision machine for a high-speed railway bearing platform. The pile head ring incision machine comprises a machine body, a ring incision device and a bent terminal. The machine body comprises a front machine frame and a rear machine frame. The front machine frame and the rear machine frame each comprise a pair of struts, a pair of moving table screws, a bottom connecting plate, a top connecting plate, a moving table and a supporting sliding table. The ring incision device comprises a turntable, a turntable gear, a knife cutting device and a water cutting device. The bent terminal comprises a fixed position supporting rod, a bent guide wheel, a rope winding wheel, a rope winding motor, an embedded head block, a capturing head and a steel wire rope. The machine body can wrap a pile head in a half-and-half rotation mode. The ring incision device can perform rotary motion to use a cutting knife to cut open part of the pile head, and water cutting is utilized to completely cut open the pile head. The bent terminal is used for bending steel bars in the pile head. The pile head ring incision machine automatically treats the pile head, manpower is saved, dust is prevented from being sucked into the body, health is ensured, environmental pollution is alleviated, and the pile head ring incision machine is convenient to operate.

A falling film evaporator is provided for use in a two-phase refrigeration system or process system. The evaporator includes a shell having an upper portion, a lower portion, and a tube bundle having tubes extending substantially horizontally in the shell. A hood is disposed over the tube bundle, the hood having an upper end adjacent the upper portion above the tube bundle, the upper end having opposed substantially parallel walls extending toward the lower portion, the walls terminating at an open end opposite the upper end. Once liquid refrigerant or liquid refrigerant and vapor refrigerant is deposited onto the tube bundle, the substantially parallel walls of the hood substantially prevent cross flow of refrigerant vapor or liquid and vapor between the tubes of the tube bundle.

An air conditioning system for a vehicle includes a heat pump type cooling device (A) having a first circulation route (1), and also includes a circulation device (B) for heating having a second circulation route (8). A water-cooled condenser (3) in the first circulation route (1) is placed in the second circulation route (8) and releases heat of a first refrigerant to a second refrigerant. A flow path change valve (14) for changing between the radiator (10) side and a radiator bypass flow path (13) is provided in the second circulation route (8). In heating operation, the second refrigerant is caused to flow to the radiator bypass flow path (13) by the flow path change valve (14) and air heated by a heater core (12) is introduced as air conditioned air into a vehicle interior. In cooling operation, the second refrigerant is caused to flow to the radiator by the flow path change valve (14) and air cooled by an evaporator (6) is introduced as air conditioned air into the vehicle interior.

A self-cleaning screen for shallow water pumping includes a rotatable drum made of mesh material for removing debris from water passing into the drum, and a suction chamber within the drum for feeding water to a suction pipe connected to a centrifugal pump. Inlet openings are arranged across a bottom side of the suction chamber. A check valve assembly is provided to prevent water from back flowing through the inlet openings, to thereby maintain a prime in the suction pipe when the pump is off. The check valve assembly includes valve members that are slidably mounted above the inlet openings for movement between closed and open positions. The valve members move upwardly from their closed positions to their open positions upon movement of water through the inlet openings into the suction chamber, and return to their closed positions by force of gravity when water stops flowing into the suction chamber.

A system for detecting the presence of smoke within a building and providing means to remove the smoke, into the airspace above the ceiling thereby preventing or at least alleviating smoke inhalation, property damage, and allowing more time for the safe evacuation from the premises. The system is comprised of a conventional smoke detector which activates control means for raising and lowering a generally planar panel which is installed in a ceiling. Smoke is removed from the airspace below the ceiling to the airspace above the ceiling. An optional fan, remote fan relay, exhaust vent and back draft damper further aid in the exhausting of the smoke from the building. A fusible link in the control means protects the ceiling fire rating.

A method and apparatus (10) for determining cardiac output by directing airflow or gas flow (fluid) to a fluid containment structure (12) coupled to an inspiratory limb (16) of a ventilator circuit instead of the patient and enabling the patient to directly inhale fluid from the fluid containment structure and preventing the patient from inhaling through an expiratory limb (18) of the ventilator-circuit. The method and apparatus also prevents exhalation by the patient into the fluid containment structure. The method and apparatus also comprises an aid helps the patient become consistent in their breathing patterns. When the fluid containment structure fills with a volume of fluid, the aid provides an indication that the patient should inhale; when the fluid containment structure empties of fluid, the aid provides a signal that the patient should exhale. Thus, the aid provides feedback to the patient to help the patient control their ventilation pattern.

The present invention relates to a control method of air conditioner safety shutdown. Said method includes the following steps: when the turn-off signal of indoor machine is received by outdoor machine, the compressor is in low-frequency operation, when it is used for refrigeration, the control system can forcedly close the electronic expansion valve of indoor machine, when it is used for heat production, the control system can forcedly close the electronic expansion valve of outdoor machine; then the cooling agent from electronic expansion valve to suction line of compressor can be discharged from exhaust hole by compressor; when the exhaust temperature of compressor is risen or low-pressure pressure is lowered to defined value, then control system can be used for controlling compressor and making it stop safety shutdown process of air conditioner. Said invention can utilize said control method to ensure normal operation of said system.

The invention relates to a mouth mask made of inexpensive materials in effectively preventing the dusts, pathogens, extremely tiny and harmful matters and pollutants in the air, which is characterized in that: an inner surface of a covering part (2) is covered by non-hygroscopic fabric or non-woven fabric, or two layers of the non-hygroscopic fabric are overlapped to form the covering part (2); the non-hygroscopic fabric or non-woven fabric are immersed into non-volatile or low-volatile liquid with right amounts of deodorant, bactericidal and anti-bactericidal agent and antiviral agent, to prepare immersion pieces (5); the immersion pieces (5) are then clamped between the covering part (2). When passing through the covering part (2), the harmful matters or the odor pollutants are absorbed by the liquid in the immersion pieces (5), so as to prevent harmful matters inhaled from the mouths and the noses, and avoid the emanation of elements causing the halitosis or pathogens from the users along with the breath. Moreover, due to the improved moisture retention, the dry throats are prevented and symptoms of the bronchus system are alleviated. In addition, since the non-hygroscopic fabric at the further inner side surface of the immersion pieces (5) are adopted, discomfort caused by the immersion of the mouths and noses in the fluid in the immersion pieces (5) is avoided.

The invention discloses an automatic production system for highly-efficient walnut shell breaking and kernel obtaining and shell-kernel separation, and the automatic production system solves problemsthat the existing walnut shell breaking device can not adapt to walnuts in different sizes, and the shell breaking rate and the shell breaking efficiency can not be guaranteed. The automatic production system is capable of realizing highly-efficient shell breaking and kernel obtaining and shell-kernel separation for walnuts in different varieties, high in production rate and automation degree, improved in whole kernel rate and kernel obtaining rate, reduced in damage rate of walnut kernels and capable of ensuring high efficiency of shell breaking and thoroughness degree of shell-kernel separation. A technical scheme of the automatic production system is that: the automatic production system includes a shell breaking device: extruding components are arranged to extrude and break walnut shells; a walnut kernel vibrating and grading device: receiving shell-kernel mixture after shell breaking, subjecting the shell-kernel mixture to vibrating and grading, and conveying the graded shell-kernel mixture to each negative pressure shaking and sorting device, respectively; and the negative pressure shaking and sorting devices are connected to a negative pressure separation device, the negative pressure separation device sucks and stores the walnut shells through negative pressure suction force, and the walnut kernels are classified and stored through the negative pressure shaking and sorting devices.

The invention discloses multi-phase combined lightweight aggregate concrete and a preparation method thereof. The multi-phase combined lightweight aggregate concrete is prepared from the following raw materials in part by weight: 1 part of cement, 0.40 to 0.50 part of fly ash, 1.836 to 2.219 parts of pumice sand, 0.028 to 0.043 part of corn straw fibers, 0.006 to 0.008 part of polyphenyl particles, 0.23 to 0.33 parts of rubber particles, 0.010 to 0.015 part of additive, 0.005 to 0.007 part of foaming agent, and 0.50 to 0.55 parts of water. The preparation method comprises the following steps:1, preparing thin-coating pumice sand and thin-coating straw fibers; 2, performing interference treatment of polyphenyl particles and rubber particles; 3, uniformly stirring the cement, fly ash, water, additive and thin-coating pumice sand; and 4, adding the polyphenyl particles, rubber particles and thin-coating straw fibers in turn, and continuing to stir. When the method is used, the mechanical performance of the lightweight aggregate concrete can be improved effectively, the thermal-insulation and heat-preservation performance is enhanced, and production cost is lowered.

The invention relates to a detection device and especially relates to a multi-azimuth air detection device for indoor air detection. At present, a multi-azimuth air detection device which is used for indoor air detection, is convenient for operation and realizes accurate and fast detection is needed. Aiming at solving the above technical problem, the invention provides the multi-azimuth air detection device. The multi-azimuth air detection device comprises wheels, a first motor, support bars, a base plate, an air detector, a pushing handle rack, a rotation shaft, an annular slide rail, a slide block, a rotation plate, an electric pushing rod, a connection rod, a swing rod, an intake hood, an adapter sleeve, an air inlet flexible pipe, a first one-way valve, a piston, a cylinder body, a guide sleeve, a L-shaped movable rod, a block, a second motor, a cylindrical cam, a silica gel flexible pipe and a second one-way valve. The bottom of the base plate is symmetrically provided with wheels. The left side of the top of the base plate is symmetrically provided with the support bars. The multi-azimuth air detection device has the advantages of operation convenience, detection accuracy and fast detection speed.