104 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of the working face is reduced; the working face shrinks in the withdrawing period; after the end hydraulic support is withdrawn in the later period, the coal body collapses to block an air return channel, and full-negative-pressure ventilation of the working face is switched into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.

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.

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 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.

The utility model provides a positive pressure ventilation air door connecting structure of a power distribution room in an explosion-proof workshop, which comprises an air door arranged on the outer side wall of the power distribution room in the explosion-proof workshop, a ventilation opening is arranged on the inner side wall of the power distribution room, and a groove with the peripheral size larger than that of the ventilation opening is arranged on the outer side wall of the power distribution room corresponding to the ventilation opening. The air door is rotationally connected into the groove and can cover the ventilation opening, connecting shafts are horizontally and outwards arranged at the two ends of the upper side of the air door, and positioning pins capable of abutting against the connecting shafts are further arranged in the groove. The beneficial effects of the utility model are that the air door turns over through the rotation of the connecting shaft, and the peripheral size of the groove is larger than the peripheral size of the ventilation opening, so that the air door is installed in the groove, the ventilation opening can be blocked through the air door, and airflow in the explosion-proof workshop is prevented from entering the distribution room; and after the turnover position of the air door is adjusted according to actual requirements, the positioning pin abuts against the connecting shaft to fix the position of the air door, and different constant-pressure requirements are met.

Transvascular diaphragm pacing systems (TDPS) and methods are disclosed for providing respiratory therapy to a patient. The TDPS can provide rapid insertion and deployment of endovascular pacing electrodes in critically ill patients who require intubation and invasive PPMV in order to support the physiological requirements of the human ventilatory system. The systems and methods make best use of the contractile properties of the diaphragm muscle and prevent muscle disuse and muscle atrophy. This can be carried out by engaging the phrenic nerves using patterned functional electrical stimulation applied to endovascular electrodes that are temporarily and reversibly inserted in central veins of the patient, such as the left subclavian vein and the superior vena cava. The TDPS can be designed to seamlessly interface with any commercially available positive-pressure ventilatory assistance / support equipment such as is commonly in use in hospital intensive care units (ICU) for treating critically ill patients with breathing insufficiencies, pain, trauma, sepsis or neurological diseases or deficits.

The invention belongs to the technical field of goaf air leakage measurement, and particularly relates to an accurate goaf air leakage measurement method. The method comprises the following steps: firstly, determining a release point position and a plurality of measuring point positions in a working surface area; then, the SF6 tracer gas with different volumes is instantly released twice in sequence at the position of the release point; then, monitoring the concentration of the SF6 gas in real time at each measuring point position; finally, the air volume of each measuring point position and the air leakage amount between the measuring point positions are calculated through a formula, and then the air leakage area and the air leakage direction are accurately judged. The goaf air leakage accurate measuring method is wide in application range, the air volume of each measuring point position and the air leakage amount between the measuring point positions can be accurately calculated under the positive pressure ventilation condition or the negative pressure ventilation condition, and the air leakage direction is judged; the method also has the advantages of being accurate in calculation result, low in implementation cost, recyclable in equipment and the like.

The application provides a closed oxygen supply ventilation device and an oxygen supply system, and relates to the technical field of oxygen supply. The closed oxygen supply ventilation device comprises an oxygen supply pipeline and a sealing assembly. The oxygen supply pipeline is used for cooperating with a patient and can provide oxygen for the patient through the nasal cavity of the patient. The sealing assembly comprises a nasal plug and a connecting piece. The connecting piece is connected to the nasal plug and the oxygen supply pipeline. The nasal plug is used for closing the nasal cavity of the patient without the oxygen supply pipeline. The device can continuously and effectively ensure the air tightness of the nasal cavity position of the patient during operation, is not easy to leak at the nasal cavity position, can provide positive pressure ventilation, and is not easy to leak and cause environmental pollution in the operating room when inhaling anesthetic drugs.

The air control breathing machine comprises a main machine and a breathing mask, the main machine is communicated with an air source port and a communication port, the communication port is divided into a suction port, an expiration port, an inspiration port, an atomization port and an exhaust port, the suction port is communicated with a liquid collection bottle, the expiration port is communicated with the breathing mask, and a humidification tank is communicated between the inspiration port and the breathing mask. An atomizing cup is communicated between the atomizing opening and the breathing mask; compressed air or medical oxygen is used as power, a pneumatic control mechanism is used for working, a power source is not needed, and the device can be used under the power-source-free conditions such as emergency treatment, transfer and field. The breathing machine has the functions of intermittent mechanical ventilation IPPV of the breathing machine, synchronous intermittent instruction ventilation SIMV, positive airway pressure ventilation CPAP, positive end expiratory pressure PEEP, airway inspiration negative pressure triggering, airway expiration positive pressure protection, airway atomization humidification, suction, air and oxygen mixing and manual ventilation, can be used in normal pressure departments, can reach 0.3 MPa in a hyperbaric oxygen chamber, can reach 0.3 MPa in a hyperbaric oxygen chamber, can reach 0.3 MPa in a hyperbaric oxygen chamber, can reach 0.3 MPa in a hyperbaric oxygen chamber, can reach 0.3 MPa in a hyperbaric oxygen chamber, can reach 0.3 MPa in a hyperbaric oxygen chamber, can reach 0.3 MPa in a hyperbaric oxygen chamber, can reach 0.3 MPa in a hyperbaric oxygen chamber, can reach 0.3 MPa and long-time stable and reliable use can be realized.

The claimed article is a piezo holder mechanism, which is a holder for a piezo used in combination with a device for cleaning hoses and masks for CPAP (Continuous Positive Airway Pressure).