138 results about "Positive pressure ventilation" patented technology

The invention belongs to the technical field of coal mine disaster prediction, and discloses a method and a system for judging a spontaneous combustion dangerous area of a goaf in a working face withdrawing stage. According to the method, influence of goaf air fracture development and air leakage channel formation on a spontaneous combustion dangerous area is determined; verifying the influence of residual coal distribution on the spontaneous combustion dangerous area of the goaf; determining the influence of void ratio and distribution on the spontaneous combustion dangerous area distribution of the goaf after the coal caving amount of the working face is reduced; the working face shrinks in the withdrawing period; after the end hydraulic support is withdrawn in the later period, the coal body collapses to block an air return channel, and full-negative-pressure ventilation of the working face is switched into positive-pressure ventilation of a local ventilator; and importing the void ratio and the residual coal distribution change formula into FLUENT numerical simulation software by utilizing a CFD-DEM simulation result. Technical basis is provided for judgment of the spontaneous combustion high-danger area of the working face from end mining to support removing goaf, and standardization and normalized development of the industry technology are assisted; and the generation of gases such as CO and CO2 caused by spontaneous combustion of the goaf is avoided.

The utility model provides a ventilation system for a hog house. The ventilation system comprises an air supply device arranged outside the hog house; the preheating pipe is arranged in a manure ditch of the hog house and connected with the air supply device, and air is supplied into the preheating pipe through the air supply device; the air inlet pipe is arranged in the pig house, the air inlet pipe is connected with the preheating pipe, and a plurality of air outlets are formed in the air inlet pipe; the trench fan is fixed on the outer side of the wall body of the hog house and is used for extracting air in the manure trench; according to the air supply device, a positive pressure fan and an air filter are arranged in a shell, the positive pressure fan is connected with the preheating pipe through a hose, and the air filter is arranged on the side, away from the preheating pipe, of the positive pressure fan; the multi-layer protective net is connected with the shell, arranged on the side, away from the hose, of the shell and used for blocking sundries outside the shell. The ventilation system for the hog house solves the technical problems that in the prior art, a positive pressure ventilation mode is single in function, and the air quality in the hog house cannot be guaranteed.

The utility model discloses an adjustable continuous positive airway pressure ventilation device, relates to the technical field of positive pressure ventilation devices, and solves the problems that in the prior art, a CPAP device is complex in structure and high in manufacturing cost, the medical expense of a patient can be additionally increased, and popularization is not convenient. The device comprises a pressure air storage bag, the pressure air storage bag is communicated with an oxygen input mechanism and an oxygen output mechanism, the other end of the oxygen input mechanism is communicated with oxygen supply equipment, and the other end of the oxygen output mechanism is communicated with a tracheal catheter. The oxygen output mechanism is provided with a pressure gauge used for displaying the pressure in the airway and a pressure adjusting assembly used for adjusting the positive pressure of the airway. The utility model discloses can improve hypoxemia to a certain extent, prevent the possible respiratory system complication, promote patient's rehabilitation, and simple structure and principle, convenient operation, easy to handle, manufacturing cost is low, thereby effectively reducing patient's medical expenditure, is favorable for popularization.

A headgear for use in the Positive Airway Pressure field includes an inner layer, a bonding layer, a padding layer, film layers, and an adhesive. The inner layer is configured to be at least partially in contact with a patient's skin during use, while the bonding layer is configured to adhere an outer side of the headgear, which comes into contact with the air, to a fixed part by folding the headgear, thereby tightening or loosening the headgear. The padding layer, placed between the inner layer and the bonding layer, increases thickness. The film layers are provided between the inner layer and the padding layer, as well as between the padding layer and the bonding layer. The adhesive is configured to bond the layers together. The headgear has at least three layers and is made of at least two types of textile materials.

The utility model discloses an energy-saving environment-friendly high epidemic prevention livestock and poultry house which comprises a fresh air filtering system, a corridor, a livestock and poultry house body and a waste gas treatment deodorization system which are sequentially arranged and communicated with one another, the fresh air filtering system comprises an air filtering room, and the air filtering room is communicated with the corridor through a primary air inlet; and the waste gas treatment deodorization system comprises a deodorization water tank and a deodorization filter curtain. A suspended ceiling, a feeding area, an underground manure ditch and an underground air duct are arranged in the livestock and poultry house body from top to bottom, a plurality of one-way ventilation windows are formed in a suspended ceiling plate of the suspended ceiling, and a suspended ceiling fan is installed at one end of the suspended ceiling; the underground manure ditch is adjacent to and communicated with the pre-buried underground air duct, a preheating air pipe is mounted in the underground air duct, and the preheating air pipe is communicated with the suspended ceiling through an air chamber air duct. The system is reasonable in layout, and can effectively save energy and reduce emission through the winter fresh air preheating system and the waste gas treatment deodorization system; meanwhile, positive pressure ventilation is matched with an air filtering system, so that the biological safety can be effectively improved.

The invention belongs to the technical field of positive pressure ventilation, and particularly relates to an airway respiration supporting positive pressure ventilation device which comprises an assembly frame, a humidifier is installed above the assembly frame, an oxygen input port is installed above the humidifier, an atomization inhalation connecting port is formed in the front end face of the humidifier, and an air inlet is formed in the front end face of the atomization inhalation connecting port. An oxygen output port is formed in the front end face of the humidifier and located on one side of the aerosol inhalation connecting port, and the oxygen input port, the aerosol inhalation connecting port and the oxygen output port are all connected with guide pipes. During working, the conduits at different positions are installed in the oxygen input port, the aerosol inhalation connecting port and the oxygen output port respectively, the mask connected with the conduits is placed on the face of a patient, and then continuous positive pressure airflow generated by an external host enters the humidifier through the oxygen input port; the oxygen is discharged into the mask from the oxygen output port of the humidifier and the catheter and enters the airway of the patient, the airway can be expanded from the outside, and it is guaranteed that air can enter the mask smoothly.

A system for safely delivering an efficient amount of oxygen to vital organs during cardiopulmonary resuscitation (CPR) is described, and respective methods and endotracheal devices for performing semi-voluntary positive pressure ventilation are further described, the system being comprised of at least one limb compression device, a positive pressure ventilation system, an endotracheal tube, a cardiac stimulation device, an endotracheal pressure sensor, and a synchronizer, and the method being comprised of compressing at least one limb device to occlude blood flow to the limb, delivering a mixed gas, providing an endotracheal tube, applying a deployed configuration, applying a hold configuration, running the cardiac stimulation device, determining pressure, and synchronizing timing. The endotracheal device is comprised of an elongated tube, and a sealing cuff that assumes a deployed configuration and a hold configuration.

1. Name of the design product: Respiratory mask. 2. Use of the design product: Respiratory mask for continuous positive airway pressure ventilation. 3. Design key points of the design product: Lies in the shape. 4. Picture or photograph that best shows the design key points: Perspective view 1.

The invention relates to a device (100) and system for positive pressure ventilation (PPV) and continuous positive airway pressure (CPAP) therapy, the device comprising: a fresh gas flow inlet (2) arranged to receive a fresh gas flow from a fresh gas flow tube (22) connectable thereto; a patient interface end (3) arranged to connect with a patient interface; an outlet (4) having an open end (5); a variable flow CPAP generator (6) comprising a first, second and third connection portion (10, 11, 12), wherein the first connection portion is connected with the fresh gas flow inlet, the second connection portion is connected with the patient interface end, and the third connection portion is connected with the outlet, wherein the generated CPAP level is adjusted by varying the fresh gas flow to the variable flow CPAP generator. The device further comprises an internal leak channel (9) arranged to extend between the fresh gas flow inlet and at least one of the patient interface end and the outlet, so as to create an internal fresh gas leak flow therebetween, bypassing the first connection portion of the variable flow CPAP generator, which internal fresh gas leak flow is added to the fresh gas flow provided by the variable flow CPAP generator in PPV mode. A simplified device and system, respectively, are provided which are easy to use and allow for quick switching between PPV and CPAP therapy without the need to change equipment.

The invention discloses a preoperative anesthesia risk intelligent assessment system and method, and relates to the technical field of medical treatment, the step S1 is used for identifying an operation type and extracting patient personalized information, realizing intelligent judgment of examination item execution, and ensuring pertinence and rationality of assessment from the source; s2, the timeliness of anesthesia preparation work is evaluated according to the executive performance of examination items, if it is judged that the anesthesia preparation work is in a timely state, the potential aspiration risk can be effectively blocked through stomach tube decompression or guiding examination measures, and safety in the operation is guaranteed; s3, under the condition that preparation work is not timely, whether a positive pressure ventilation means needs to be used or not is further judged, dynamic monitoring of intraoperative physiological indexes is carried out in a linkage mode, a physiological change information set is constructed, and key input is provided for intraoperative risk early warning; and S4, judging the risk of aspiration again based on the information set, analyzing the shock index trend of the patient in combination with historical data, and evaluating the stability of the body compensation mechanism.

1. The name of the design product: frequency conversion cabinet (positive pressure ventilation device). 2. The use of the design product: the design product is used for speed regulation and operation control of electric machines. 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 present invention relates to the field of offshore oil and gas extraction technology, and more specifically, to a one-button start system for a multi-stage reciprocating compressor and a method for starting the system. The one-button start system comprises a controller, a one-button start control unit, a positive pressure ventilation and fire and gas system detection unit, an external auxiliary system detection unit, an alarm unit, and a signal acquisition unit. The present invention overcomes the disadvantage of the prior art that multi-stage reciprocating compressors cannot be started with one button. By integrating the entire startup process of the multi-stage reciprocating compressor through sequential control, a highly automated, safe, and efficient startup solution is formed, which avoids the safety risks of manual startup, saves manpower, reduces labor costs, and also improves the production and operation efficiency of offshore oil and gas extraction platforms.

Reminder of the titleDevice for sleeping with a medical device by Continuous Positive Pressure used for the treatment of sleep apnea. Technical field and statement of the problemThe invention relates to a device for sleeping with a CPAP device without risk of air leakage and removal of the mask. Main characteristics of the solutionIt consists of a T-shirt (1) or a nightie having on its front face a funnel-shaped pocket (2), equipped with a zipper (4) through which the air tube (6) is introduced to keep it in line with the patient's mask (7). Thus, during movements during sleep, the patient moves his mask and the air tube simultaneously in the same direction, canceling any friction force. Intended useThe device according to the invention is particularly intended for better patient acceptance of his Continuous Positive Pressure ventilation treatment.Choice of an illustration to accompany the abstractFigures for the abstract: Fig.1, Fig.2.

This invention relates to a device (100) for positive pressure ventilation (PPV) and continuous positive airway pressure (CPAP) therapy, comprising: a fresh gas inlet (2) arranged to receive a fresh gas flow from a fresh gas flow tube connectable thereto; a patient interface end (3) connectable to a patient interface; an outlet (4) having an open end (5); and a plurality of variable flow CPAP generators (6), each of which is connected to the fresh gas inlet, the patient interface end, and the outlet of the device. Simplified devices and systems are provided respectively, which are easy to use and allow for rapid switching between PPV and CPAP therapy without altering the equipment.

According to the waste gas collection and treatment system and method in the electrochemical treatment process, by increasing the positive pressure ventilation mode, the exhaust air rate of the system is increased, waste gas in the reactor is exhausted to the maximum extent, hydrogen and chlorine in the reactor are kept in the low concentration range, and the on-site poisoning and explosion risks are reduced; the three-stage alkaline washing tower and the activated carbon adsorption tower are arranged, so that hydrogen and chlorine generated in the electrochemical treatment process are discharged at high altitude after the concentration is reduced to a safe range, and the pollution to ambient air is reduced.

The invention discloses a high-voltage shore power safety access system and method for a ship danger area. The system comprises a high-voltage shore power connection cabin located in a dangerous area of a midship of a ship, a high-voltage shore power socket connected with a high-voltage shore power access distribution board is arranged in the high-voltage shore power connection cabin, a first multi-parameter safety assembly is arranged on the inner side of the cabin wall of the high-voltage shore power connection cabin, and a first airtight through piece is arranged on the cabin wall of the high-voltage shore power connection cabin; the positive pressure ventilation unit is located in a ship safety area and connected with the high-voltage shore power connection cabin through a ventilation pipeline so as to guarantee that the interior of the high-voltage shore power connection cabin is the safety area. The emergency warning control assembly is arranged on one side outside a cabin door of the high-voltage shore power connection cabin; the central control monitoring unit is electrically connected with the high-voltage shore power access distribution board, the positive-pressure ventilation unit, the first multi-parameter safety assembly and the emergency warning control assembly. According to the invention, the problems of uncontrollable safety risk, mismatching with the layout of an oil wharf and poor adaptability with different ship type scales when a high-voltage shore power system is arranged in a dangerous area can be solved.

The present invention discloses a medical anesthesia air storage bag connection structure, comprising an anesthesia machine connector, a connecting shaft and an air storage bag; the connecting shaft passes through the air storage bag and is sealedly connected to the anesthesia machine connector; the connecting shaft rotates radially within the anesthesia machine connector; an oxygen channel and an atomization channel are respectively arranged along the axial direction of the connecting shaft; the connecting shaft is provided with an air inlet and air outlet connected to the oxygen channel and the atomization channel; the anesthesia machine connector is provided with an air inlet and air outlet corresponding to the oxygen channel and the atomization channel. During the inhalation anesthesia process, if the patient experiences airway constriction due to stimulation by anesthetics, or if the patient's existing respiratory system disease is stimulated, leading to bronchospasm, coughing, and wheezing, supportive treatment can be given without changing the original medical system environment; the complexity and unstable effect of the atomizer introduced in the atomization treatment during the inhalation anesthesia stage are simplified and overcome; and the complexity of positive pressure ventilation in medicine is simplified.

1. Name of the designed product: Positive airway pressure therapy machine (SS100). 2. Use of the designed product: To provide help for people with breathing difficulties. 3. Design points of the designed product: In shape. 4. Picture or photo that best shows the design points: Perspective view.

The invention discloses a micro-positive pressure intelligent ventilation system suitable for a closed material plant control room, which comprises an intelligent control system, and is characterized in that the indoor and outdoor pressure difference is detected in real time through a pressure difference sensor, and the opening degree of an air valve is dynamically adjusted through the intelligent control system so as to control the interior to be in a 0-500Pa micro-positive pressure environment; an air treatment system; the air treatment system purifies air through a high-efficiency filter and is provided with an oxygen supplementing pipeline, one end of the oxygen supplementing pipeline is communicated with an indoor air supply pipeline, and the other end of the oxygen supplementing pipeline is communicated with an external oxygen source. The air treatment system is provided with an air storage bag connected with a pipeline of the intelligent control system, and air in the air storage bag is conveyed into a room through a fan. According to the system, intelligent micro-positive-pressure ventilation, air purification and oxygen supplementation functions of a high-risk, high-dust and underground closed control room are achieved, it is ensured that air in the closed control room is clean, the pressure difference between the indoor and the outdoor can be detected through the pressure difference probe, and according to the set pressure difference value, the control system automatically adjusts operation of air supply and maintains the micro-positive-pressure state.

The invention relates to the technical field of motors, in particular to a high-efficiency motor special for a cooling tower, which comprises a positive pressure ventilation structure and an energy-saving motor, and is characterized in that the energy-saving motor is fixedly provided with the positive pressure ventilation structure, and the positive pressure ventilation structure is communicated with the energy-saving motor and is used for heat dissipation treatment of the energy-saving motor; the positive-pressure ventilation structure is used for positive-pressure ventilation treatment, the first ventilation treatment part and the second ventilation treatment part are the same in structure and both communicate with the energy-saving motor in a sealed mode, and the ventilation pipeline communicates with the butt-joint elbow through the butt-joint communicating pipe and the guiding pipeline; the butt joint elbow is communicated with a guide ring sleeve through a butt joint valve pipe, the guide ring sleeve is communicated with a butt joint sealing channel pipe through a channel, so that gas is controlled to reach the interior of the energy-saving motor, the gas is guided and discharged through a second ventilation processing part, and the positive pressure ventilation structure comprises a first ventilation processing part. Through the arrangement of the structure, the motor special for the cooling tower can be protected conveniently.

This product is the main unit of a positive airway pressure (CPAP) device, which is used, for example, in the treatment of sleep apnea syndrome (SAS). A positive airway pressure (CPAP) device, also known as a CPAP device, works by supplying pressurized air to the user's airway to prevent apnea during sleep, thereby reducing snoring and improving sleep quality. The main unit has a hose connection port, and a hose with a mask attached is connected to it.

The invention relates to the technical field of greenhouse ventilation, and discloses a positive-pressure ventilation type glass greenhouse which comprises a glass greenhouse body, a first communication assembly, a second communication assembly, a wet curtain, a movable shielding assembly, a ventilation pipeline and a fan, the glass greenhouse body internally comprises a climate chamber and a planting chamber which communicate with each other, and an air inlet is formed in one side of the climate chamber; a second communication assembly is arranged in the air inlet, a wet curtain and a movable shielding assembly are arranged in the climate chamber, and a ventilation pipeline and a fan are arranged at the bottom of the planting chamber; by means of the partition design of the climate chamber and the planting chamber, in cooperation with the double cavities separated by the vertical wet curtain and the movable shielding assembly at the top of the wet curtain, independent humidification or non-humidification of air sucked in from the outside and air in the greenhouse body can be flexibly switched, the single mode of traditional'exogenous humidification 'is broken through, and the internal circulation humidification function is achieved; and meanwhile, by means of control over the air circulation channel through the first communication assembly and the second communication assembly, the humidification requirement of internal circulation can be met.

An inline muffler for use with a positive airway pressure (PAP) apparatus. The muffler may provide an expansion chamber with baffles that capture acoustic energy using, for instance, a disruptive gas flow path to effectively reduce downstream noise associated with a flow of pressurized gas produced by the PAP apparatus. In some embodiments, the muffler is constructed of two mostly identical halves with baffle segments being integrally formed therewith.

The utility model discloses a safe positive pressure ventilation explosion-proof PLC cabinet, which relates to the technical field of PLC cabinet explosion-proof. The safe positive pressure ventilation explosion-proof PLC cabinet comprises a main cabinet, a control box is fixedly installed on the side of the main cabinet, a supporting plate is arranged on the other side of the main cabinet, a bottom plate is fixedly installed on the side of the main cabinet corresponding to the bottom end of the supporting plate, an explosion-proof structure is arranged on the bottom plate, and the explosion-proof structure comprises two buffer simple columns, the two buffer simple columns are fixedly installed on the bottom plate, two buffer sleeves are fixedly installed on the side of the two buffer simple columns close to the main cabinet, and a slide block cooperates with a hollow rod with strip through holes at both ends to achieve a pressure relief effect on the cabinet body, and when the internal pressure of the cabinet body is relatively small, the slide block is pushed to leave the inside of the hollow rod through the action of the pressure relief spring, and at this time, the gas in the main cabinet is no longer discharged from the strip holes at both ends of the hollow rod under the blocking effect of the slide block, thereby increasing the pressure inside the main cabinet to achieve a dynamic adjustment of the pressure inside the cabinet body.

The utility model relates to the technical field of artificial airway ventilation, and discloses a monitoring type nasal cavity ventilation device which is an artificial airway ventilation tool capable of meeting the functions of positive pressure ventilation oxygen supply, high-flow oxygen supply, CO2 monitoring and the like, and can better reduce ventilation damage and protect ventilation safety. The ventilation cover comprises a cover bag and a ventilation cover body, a universal joint is arranged at the end, away from the cover bag, of the ventilation cover body, the ventilation cover further comprises a sealing cover structure which is located between the ventilation cover body and the universal joint and provided with a shielding gasket shell and a mounting hole channel, and a plurality of gear protrusions are evenly arranged on the side, away from the ventilation cover body, of the shielding gasket shell in the annular direction. At least one air outlet channel is arranged between every two adjacent gear protrusions. Vent hole units in one-to-one correspondence with the air outlet channels are arranged on a shell on one side, connected with the sealing cover structure, of the vent hood body, the carbon dioxide monitoring structure is provided with a vertical connecting pipe and a horizontal connecting pipe which are communicated with each other, and the vertical connecting pipe is rotatably and movably connected with a connector arranged at the right bottom of the vent hood body.

The utility model discloses an anesthesia mask specially used for induction of patients with gastric tubes, comprising an oxygen mask and an oxygen tube. An inflatable bag is arranged at the bottom edge of the oxygen mask, a gastric tube indwelling tunnel is arranged at the left or right end of the lower side of the inflatable bag, and valves are symmetrically arranged along the middle of the lower side of the gastric tube indwelling tunnel to both sides. When the gastric tube is embedded in the gastric tube indwelling tunnel, the gastric tube fits with the inner surface of the gastric tube indwelling tunnel and the inner surface of the valve. The utility model can easily embed the gastric tube into the gastric tube indwelling tunnel by arranging the gastric tube indwelling tunnel at the lower part of the oxygen mask, is easy to operate, can make the oxygen mask better fit with the face, is comfortable, and is not easy to deviate. Two valves are arranged at the lower end of the gastric tube indwelling tunnel, so that the gastric tube can be embedded and a certain limit effect can be played on the gastric tube after embedding, and a gap between the gastric tube indwelling tunnel and the face can be avoided during use, so as to avoid air leakage and ensure the smooth positive pressure ventilation.

The trachea cannula with the pressure measuring function comprises a cannula body, an air inflation structure and a pressure measuring structure, a spherical air bag is arranged at one end of the cannula body, and the air inflation structure and the pressure measuring structure are both arranged at the other end of the cannula body; the inflation structure comprises a first capillary tube and an inflation rubber ball, the first capillary tube is communicated with the spherical air bag through a tube body, the inflation rubber ball is arranged at the tail end of the first capillary tube and used for inflating the spherical air bag, and a pressure relief valve used for deflating is further arranged on the first capillary tube; the pressure measuring structure comprises a second capillary tube and a pressure detection meter, one end of the second capillary tube is communicated with the spherical air bag, and the other end is connected to the pressure detection meter. The trachea cannula can be inflated and subjected to pressure measurement, the pressure of the spherical air bag can be visually detected, operation is easy, it is ensured that the pressure of the air bag is within a proper range, the functions of the air bag for sealing an air channel, guaranteeing positive pressure ventilation, preventing aspiration and reducing VAP breathing machine related pneumonia are fully played, and the safety of a patient is guaranteed.

The utility model relates to the technical field of explosion-proof cabinets, and provides a positive pressure ventilation explosion-proof cabinet which comprises a box body, a ventilation box is welded to the top of the outer wall of one side of the box body, an air blower is installed in the ventilation box, the outer wall of one side of the ventilation box is connected with a ventilation pipe, one end of the ventilation pipe is communicated with the interior of the ventilation box, and the other end of the ventilation pipe is communicated with the air blower. An annular plate is welded to the other end of the ventilation pipe, the other end of the ventilation pipe is sleeved with a first filter cylinder, springs are welded to the periphery of the top of the inner wall of the first filter cylinder, and the bottoms of the springs are connected with the top end face of the annular plate in an attached mode. According to the positive pressure ventilation explosion-proof cabinet, air can be guided into the box body through the air blower, the ventilation effect of equipment can be improved, entering air can be filtered through the first filter element, the second filter element and the third filter element, the air filtering effect can be improved through the multiple layers of filter elements, and dust entering the box body is reduced; and stored articles are prevented from being polluted.