600 results about "Oxygen delivery" patented technology

A system and method for maintaining an oxygen concentration of a biological sample. The oxygen concentration can be maintained by measuring the oxygen concentration within the biological sample and adjusting a rate of an oxygen supplier in response to this measurement. For example, when the oxygen concentration is below a threshold, oxygen can be delivered to the biological sample at a higher rate.

The present invention relates to an oxygen-carrying nanoliposome in which oxygen is carried inside a shell of a phospholipid bilayer, and use thereof. The nanoliposome continuously releases oxygen, thereby maintaining an oxygen delivery effect for a long time, and increases anticancer efficacy without damaging the cells by delivering oxygen specifically to tumor cells.

The invention relates to the technical field of oxygen supply, and provides a self-adjusting dispersion type oxygen-enriched sleep pillow which comprises an oxygen conveying assembly, a monitor, an analyzer and an oxygen supply controller, oxygen is conveyed to an oxygen conveying pipe of the sleep pillow through the oxygen conveying assembly, the heart rate and the blood pressure of a target object are monitored through the monitor, historical data monitored by the monitor are analyzed through the analyzer, and the oxygen supply controller is connected with the sleep pillow. The method comprises the following steps: identifying an anoxia influence period through the heart rate and blood pressure of a target object, distinguishing a significant influence period and a weak interference period based on an anoxia influence tendency characterization value, monitoring the oxygen state of a sleep pillow target object area, determining oxygen catheter characterization parameters, and predicting whether the oxygen concentration of the target object area is abnormal or not based on the oxygen catheter characterization parameters. According to the method, the influence of environmental area difference on the target object in the running process of the oxygen-enriched sleep pillow is considered, the oxygen compensation device is adaptively started, and then the oxygen supply efficiency and the oxygen condition of the target object area are guaranteed.

The invention discloses a respiratory disease oxygen precise conveying system based on a sensor, and relates to the technical field of medical equipment, and the system comprises a sensing module which integrates multiple sensors to collect and process airway and physiological data of a patient; the disease matching module identifies disease types through database comparison; the dynamic adaptation module calculates exclusive oxygen concentration based on a multi-mode fusion initial algorithm; the conveying module executes adjustment; the closed-loop feedback module continuously fine-tunes the oxygen concentration through a closed-loop stepped fine-tuning algorithm to form a closed-loop link, so that accurate dynamic control of oxygen delivery is realized; according to the invention, multi-sensor collaborative acquisition and disease precise matching are combined with a dynamic algorithm and closed-loop feedback, so that individuation and dynamic oxygen delivery are realized, the system avoids misjudgment by relying on a standardized database, and the oxygen concentration, flow and pressure are ensured to be adjusted in real time along with physiological indexes of a patient through multi-parameter collaborative adjustment and stepped fine adjustment; the treatment comfort, the effectiveness and the long-term adaptability are improved.

The invention discloses an oxygen generator with high drug delivery precision, and relates to the technical field of oxygen generators. The problem of constant proportion is solved. The device specifically comprises a shell and a top cover fixed to the top of the shell, a control panel used for controlling electrical elements is arranged at the top of the top cover, an oxygen generation mechanism is arranged in the shell, an oxygen outlet of the oxygen generation mechanism is connected with an oxygen transition tank fixed in the shell, a medicine storage assembly is arranged on one side of the shell, and a medicine storage cavity is formed in the other side of the shell. A linkage type fluid driving mechanism which pumps oxygen from the oxygen transition tank and pumps liquid medicine from the medicine storage assembly at the same time is arranged in the shell, and an outlet of the linkage type fluid driving mechanism is connected with a three-way pipe fixed to the top cover. The two fluid driving assemblies are used for conveying oxygen and liquid medicine respectively, and the two fluid driving assemblies are linked through the stepless speed change assembly, so that the drug delivery speeds of the two fluid driving assemblies are correlated, the proportion of drug delivery to oxygen delivery is constant, and the suction type treatment effect is improved.

The invention relates to an intelligent judgment system and method for an oxidation-reduction end point of copper smelting of an anode furnace. According to the system provided by the invention, copper sample images and environmental parameters are obtained through the bimodal image acquisition module, oxidation period and reduction period features are extracted and fused by utilizing the differentiation feature processing module, end point probability prediction is carried out by virtue of a hybrid neural network model, and finally, the intelligent control module adjusts the oxygen supply rate according to a prediction result and gives an alarm. Aiming at the problems of strong subjectivity, low precision, poor adaptability and the like due to the fact that end point judgment of an oxidation period and a reduction period depends on artificial experience or a single data source in a traditional copper fire refining process of the anode furnace, accurate judgment is realized through the steps of synchronous data acquisition, feature extraction, end point joint prediction, closed-loop control and the like; the method has the advantages of cost reduction, efficiency improvement, accurate judgment, high adaptability and the like, expensive equipment is omitted, the cost is reduced, the judgment accuracy is improved through multi-dimensional analysis, and the unique design adapts to complex working conditions.

Provided is the OFF-VENT breathing system. The system uses novel combinations of the venturi effect, PEEP adapters, HMEs, and the adaptation of a novel oxygen delivery system for the creation of high flow therapy to maintain open airways while maintaining access to the patient's airways for medical instruments, other accessories, or to assist breathing in general. The system is designed to create high flow oxygen therapy in a manner that does not require the use of ventilators, active heating humidifiers and other expensive equipment. Embodiments described include a novel integration of the venturi system into a nasal cannula apparatus, and the novel combination of the venturi effect and a PEEP adapter into breathing systems that might include hyperinflation and Mapleson circuits.

The invention relates to the technical field of medical instruments, and discloses an adjustable respiratory resistance type end-expiratory carbon dioxide monitoring nasal mask which comprises a nasal mask body, an end-expiratory carbon dioxide collecting tube, an oxygen conveying hose and a connector assembly arranged at one end of the nasal mask body and used for connecting the end-expiratory carbon dioxide collecting tube and the oxygen conveying hose. The connector assembly comprises a double-channel connector connected with the nasal mask body, a partition plate is fixedly connected to the inner wall of the double-channel connector, and when the inspiration resistance is adjusted through the arranged inspiration adjusting mechanism and expiration adjusting mechanism, the hand wheel assembly is manually operated to control the blocking film assembly, so that the caliber size of the oxygen delivery port is changed, and the oxygen delivery effect is improved. The larger the diameter of the oxygen delivery port is, the smaller the inspiration resistance is, when the expiration resistance is adjusted, the reel assembly is manually operated, so that the total gas displacement of the exhaust hole in the exhaust buckle is changed, the larger the total gas displacement of the exhaust hole is, the smaller the expiration resistance is, and therefore the effect of improving the treatment accuracy is achieved.

The invention relates to a combined type pre-cooling system for a ground ejection and pressurization coupled liquid rocket basic-stage engine. The combined type pre-cooling system comprises a low-temperature propellant storage tank, a storage tank exhaust valve, an oxygen conveying pipeline, an oxygen backflow pipeline, an ejector, a pre-cooling discharge valve, an oxygen discharge pipeline, a pre-cooling discharge valve control pipeline, an ejection pressurization pipeline, an oxygen discharge pipeline and an exhaust valve control pipeline. The low-temperature propellant storage tank is communicated with the storage tank exhaust valve, and the bottom end of the low-temperature propellant storage tank is communicated with the oxygen conveying pipeline; the oxygen conveying pipeline is communicated with the oxygen conveying pipeline; the precooling discharge valve is communicated with the engine and the ejector; the ejector is communicated with the oxygen return pipeline; the oxygen return pipeline is communicated with the low-temperature propellant storage tank; the oxygen discharge pipeline is communicated with the pre-cooling discharge valve; the pre-cooling discharge valve control pipeline is communicated with the pre-cooling discharge valve control air port; the ejection pressurizing pipeline is communicated with the ejector; the oxygen exhaust pipeline is communicated with the storage tank exhaust valve; and the exhaust valve control pipeline is communicated with the storage box exhaust valve control air port. According to the application, random switching between circulation and discharge pre-cooling can be realized.

The utility model relates to the technical field of energy recycling, and discloses a combined utilization device for waste heat and waste gas of an alkaline electrolytic cell for wind-solar power generation and hydrogen production, which comprises a hydrogen production unit, and an oxygen separation unit and a hydrogen separation unit are sequentially arranged on the right side of the hydrogen production unit from left to right. A primary oxygen conveying pipe is communicated between the hydrogen production unit and the oxygen separation unit, a primary hydrogen conveying pipe is communicated between the hydrogen production unit and the hydrogen separation unit, and an alkali liquor recovery assembly is arranged between the bottom of the hydrogen separation unit and the bottom of the oxygen separation unit; and a combustion chamber is arranged on the rear side of the hydrogen separation unit. According to the utility model, the hydrogen production loss is reduced by utilizing unqualified hydrogen in the start-up stage; secondly, heat generated during operation of hydrogen production equipment and combustion of waste gas is used for drying and heat supply in the whole hydrogen production process; and when heat is sufficient, the steam turbine can be used for self-generating electricity, municipal electricity consumption of a factory is reduced, and municipal electricity cost is reduced.

Provided are a natural gas helium extraction device and a natural gas helium extraction method. The natural gas helium extraction device comprises a primary concentration part, a dehydrogenation and dehydration part, a secondary concentration part, and a final purification part. The primary concentration part comprises a first compressor, a first preheater, and a first membrane separator connected in sequence. The dehydrogenation and dehydration part comprises an oxygen delivery pipe, a mixer, a plurality of dehydrogenation towers connected in parallel, a low-temperature water separator, and a water remover. The secondary membrane separator of the secondary concentration part comprises a permeate gas outlet and a non-permeate gas outlet. The non-permeate gas outlet is connected to the primary concentration part. The final purification part comprises a nitrogen circulating cooling component and a pressure swing adsorption (PSA) device. The PSA device is connected to the permeate gas outlet of the secondary membrane separator and is used to output high-purity helium. The nitrogen circulating cooling component, the PSA device, and the low-temperature water separator form a cooling loop. The natural gas helium extraction device and the natural gas helium extraction method can significantly reduce safety risks and effectively reduce equipment costs.

The utility model discloses an oxygen supply nasal catheter with an anti-slip structure, comprising a mounting block, both ends of the mounting block are provided with fixed through grooves, the inner side of the fixed through grooves is movably connected with an elastic band, one end of the elastic band away from the mounting block is fixedly connected with a connecting hanging ring, the interior of the mounting block is fixedly connected with a connecting pipe, one end of the connecting pipe is fixedly connected with a rubber plug, the other end of the connecting pipe is fixedly connected with an oxygen supply pipe, the other end of the oxygen supply pipe is fixedly connected with a connecting plug, both side edges of the elastic band are fixedly connected with an adhesive reinforcement mechanism, and the elastic band and the connecting hanging ring are provided, so that the connecting hanging ring can be put on the outside of the patient's ear during use, so as to fix the mounting block, and at the same time, the overall connection can be reinforced under the action of the adhesive reinforcement mechanism, so that the overall use can be more stable.

Aspects of oxygen providing microphone stands are described. The oxygen providing microphone stand can include an oxygen providing component that connects to a microphone stand. The oxygen providing component outputs oxygen proximal to a microphone connected to the microphone stand. The oxygen providing microphone stand can include an oxygen delivery pathway that connects from the oxygen providing component to the input oxygen connector.

A device of the present disclosure has an attachment section configured for attaching to a pressurized oxygen delivery system and covering vent holes on the pressurized oxygen delivery system configured for venting exhaled carbon dioxide (CO2). The device also has a tube fixedly coupled to the attachment section on a first end of the tube and a plurality of vent holes on a second end of the tube configured for eliminating the CO2.

The present invention relates to the technical field of electrolytic hydrogen production, in particular to a water electrolytic hydrogen production device, comprising at least one hydrogen production module, each hydrogen production module is equipped with at least one electrolyzer, each electrolyzer is equipped with two electrolyte storage tanks, the electrolyzer is provided with a hydrogen delivery main pipe, an oxygen delivery main pipe, an electrolyte output main pipe and an electrolyte input main pipe, a distribution valve 1 is connected to the reflux port of the electrolyte storage tank through a pipeline, the water outlet of one electrolyte storage tank is connected to the electrolyte input main pipe through an electrolyte delivery pipe 1, a concentration sensor 2, a distribution valve 6 and a distribution valve 7 are provided on the electrolyte delivery pipe 1, and the water outlet of another electrolyte storage tank is connected to the distribution valve 7 through an electrolyte delivery pipe 2, and a concentration sensor 3 is provided on the electrolyte delivery pipe 2. Through a finely designed electrolyte circulation system, efficient utilization and concentration control of the electrolyte are achieved, and the stability and efficiency of the water electrolytic hydrogen production process are ensured.

The utility model discloses a negative pressure cabin for providing negative pressure for individuals, mainly relates to the field of medical facilities, in particular to a negative pressure cabin with an oxygen delivery device, and provides a negative pressure cabin which comprises a cabin body, a negative pressure device arranged on the cabin body and an oxygen delivery device arranged on or in the cabin body. Such a negative pressure compartment may be used for treating disease, resisting aging, promoting skin function, and / or beautifying for non-therapeutic purposes.

The utility model relates to the technical field of medical instruments, in particular to an oxygen-concentration-adjustable oxygen therapy mask which comprises a mask body, an oxygen therapy tube is sleeved with a positioning disc, the top of the oxygen therapy tube is communicated with an oxygen therapy disc, two supporting sliding rods are fixed to one side of the oxygen therapy disc, and the two supporting sliding rods are fixed to the other side of the oxygen therapy disc. One ends of the two supporting sliding rods penetrate through and extend out of the positioning disc, a rotating disc is fixed to one ends of the supporting sliding rods, springs are arranged on the outer sides of the supporting sliding rods in a sleeving mode, an air inlet disc is fixed to the top end of the interior of the fixing groove, and a plurality of air inlets are formed in one side of the air inlet disc. A plurality of air outlet pipes are fixed to one side of the air inlet disc at equal intervals and communicate with the air inlet, and an air outlet insertion pipe is welded to one side of the oxygen conveying disc and communicates with the interior of the oxygen conveying disc. When a patient wears the mask body to inhale oxygen, the oxygen concentration cannot be changed due to shaking of the head of the patient, and the treatment effect on the patient is improved.

The utility model relates to a system for preparing green methanol by coupling biomass gasification with green electricity electrolyzed water, which comprises a biomass gasification reactor, a dust removal and recovery system, a cooling system, a washing tower, a gas filling device, a pressure control system, a methanol synthesis reactor, a condensation system, a rectification device and a methanol buffer tank which are connected in sequence, the biomass gasification reactor is respectively provided with a biomass feed port, an ash discharge port, a steam inlet and an oxygen inlet, and the bottom of the dust removal and recovery system is connected with the lower part of the biomass gasification reactor through a return pipeline; the electrolytic cell is connected with an oxygen inlet of the biomass gasification reactor through an oxygen conveying pipeline and connected with a gas filling device through a hydrogen conveying pipeline, and water vapor generated by the methanol synthesis reactor is connected to a vapor inlet of the biomass gasification reactor through a pipeline. According to the utility model, the pyrolysis gas does not need to be purified or shunted, the process flow is simplified, and the conversion per pass is improved.

The invention discloses a thoracic surgery anesthesia respirator which comprises a respirator body, a monitor is installed on the respirator body, an air conveying piece is arranged in the respirator body, and the air conveying piece is connected with a mask through an air suction pipeline; a hollow column is installed in the mask, a through groove is formed in the outer side of the hollow column and communicates with the air suction pipeline, an annular groove is formed in the bottom of the mask, a second air bag is arranged in the annular groove, and the second air bag communicates with the first air bag. According to the anesthesia respirator for the thoracic surgery operation, the mask is connected with the face in an attached mode through the second air bag, the attaching degree can be adjusted in a self-adaptive mode according to the facial contour of a patient, gas leakage is effectively prevented, and the accuracy and efficiency of anesthetic gas and oxygen conveying are guaranteed; the gas uniformly enters the respiratory tract of the patient, so that the patient can breathe more smoothly and naturally, and the discomfort of the patient caused by unstable gas supply is reduced.

The invention discloses a humidifying device for medical oxygen delivery, and belongs to the technical field of oxygen delivery, the humidifying device comprises a heating base and a path-controllable humidifying bottle, the path-controllable humidifying bottle is detachably mounted on the heating base, the path-controllable humidifying bottle comprises a humidifying bottle and a plurality of separating sleeves rotationally arranged in the humidifying bottle, and the separating sleeves are detachably mounted on the heating base. A horizontal partition plate which divides the inner space of the humidification bottle into a humidification cavity and an exhaust cavity in the vertical direction is arranged in the humidification bottle, the exhaust cavity is formed above the humidification cavity, the partition sleeve is rotationally arranged between the horizontal partition plate and the inner bottom wall of the humidification bottle, the humidification cavity is divided into a plurality of independent annular cavities from inside to outside through the partition sleeve, and the annular cavities are communicated with the horizontal partition plate. A flow path adjusting assembly is arranged between every two adjacent separation sleeves. According to the humidifying device for medical oxygen delivery, the annular channel is formed in the humidifying bottle, the oxygen humidifying time is prolonged, the oxygen humidifying time is adjusted by adjusting the oxygen flowing path, and then the oxygen humidity is adjusted.

The invention relates to the technical field of oxygen uptake tubes, in particular to a PVC sterile oxygen uptake tube and an oxygen uptake tube adapter, the PVC sterile oxygen uptake tube comprises a PVC sterile inner tube, the outer side of the PVC sterile inner tube is sleeved with a PVC sterile outer tube, a PVC connecting strip is fixed between the PVC sterile inner tube and the PVC sterile outer tube, a metal wire is inserted into the surface of the PVC connecting strip, double faced adhesive tapes are arranged on the upper side and the lower side of the PVC sterile outer tube, and the PVC sterile outer tube and the PVC sterile outer tube are connected with the PVC connecting strip. Release paper is arranged on the surface of the double-faced adhesive tape, and a buckling groove and a clamping strip are arranged on the left side and the right side of the PVC sterile outer tube respectively; the beneficial effects are as follows: the PVC connecting strip not only realizes the connection effect on the PVC sterile inner tube and the PVC sterile outer tube, but also meets the buffering effect when the PVC sterile outer tube applies pressure to the PVC sterile inner tube, and is matched with the metal wire to realize the shaping effect on an anti-blocking oxygen delivery channel after the PVC sterile inner tube is bent; the PVC sterile outer pipe not only achieves the anti-scraping protection effect on the PVC sterile inner pipe, but also achieves the compression-resistant buffering effect on the PVC sterile inner pipe, and the PVC sterile inner pipe is bonded and fixed through the cooperation of the double-faced adhesive tape, so that the PVC sterile pipe is rich in function.

The invention belongs to the technical field of medical instruments, and discloses an oxygen-adding atomization inhaler for treating interstitial lung disease, which comprises a respirator assembly, an oxygen bottle, a liquid medicine box, a waste liquid collecting box, an atomization pump, a negative pressure suction pump and a monitoring mechanism, the respirator assembly is connected with the oxygen bottle; the liquid medicine box is communicated with the oxygen bottle; a medicine mist supply pipe is arranged on the respirator assembly; the respirator assembly is slidably provided with a buccal device; an atomizing pump is arranged on the liquid medicine box; the atomizing pump is connected with the medicine mist supply pipe and the mouth holding device; a negative pressure suction pump is arranged on the waste liquid collecting box; the respirator assembly is provided with a sputum suction hose; and a monitoring mechanism is fixedly arranged on the liquid medicine box. According to the device, the mouth holding device or the medicine mist supply pipe can be selected for oxygen adding atomization inhalation treatment, abnormal conditions of a patient can be found in time, data of a plurality of monitoring indexes are integrated for fusion and analysis, potential risks are found in time, and when it is monitored that the patient has dyspnea, medicine feeding is automatically stopped, oxygen conveying is started, and sputum can be cleared in time.

A self-regulating oxygen delivery system (100) for COPD, comprising: an oxygen source designed to provide medical oxygen; a sensor module configured to record physiological parameters such as oxygen saturation (SpO2), respiratory rate and pulse rate; a microcontroller-based control unit that is functionally connected to the sensor module and the oxygen source; and an intelligent flow control mechanism controlled by the microcontroller, the system automatically adjusts the oxygen flow in real time based on the recorded physiological parameters to maintain optimal oxygen saturation levels.

The invention relates to the technical field of tunnel guarantee cabins, in particular to a tunnel guarantee cabin capable of safety early warning, which comprises a tunnel guarantee cabin body, a tunnel walking assembly is arranged at the lower end of the tunnel guarantee cabin body, and a guarantee cabin inner compartment is fixedly mounted on the inner side of the tunnel guarantee cabin body. According to the tunnel guarantee cabin capable of achieving safety early warning, the tunnel guarantee cabin combines a safety early warning system and a cabin body pressure sensor to monitor the internal environment of the partition cabin in the guarantee cabin in real time, and under the condition that internal equipment is damaged to cause high pressure in the cabin, the guarantee cabin can utilize an automatic pressure relief mechanism to relieve pressure in the cabin; most of high-pressure gas is effectively exhausted out of the cabin through the main pipeline exhaust pipe, meanwhile, a small part of high-pressure gas is guided to enter the residual gas concentration cabin, dual-function autonomous release of the high-pressure gas is achieved, and damage caused by too high pressure in the cabin is avoided; and a gas pushing mechanism is utilized to realize automatic opening and closing of an oxygen delivery seal, so that necessary oxygen supplementation is provided for the cabin.

The present application relates to the technical fields of iodine removal of crude salt, and discloses a high-efficiency and energy-saving iodine removal device for crude salt, which comprises a salt dissolving pool assembly, a reagent tank assembly, a reaction tank assembly, a combustion tank assembly and an adsorption tower assembly, mainly solves the problems of low iodine removal efficiency and high energy consumption in the prior art, by injecting fresh brine into the salt dissolving pool, driving the ultrapure water metering pump to dilute, opening the stirring motor to disturb and pre-oxidize the brine, driving the hydrochloric acid metering pump to adjust the pH of the brine, driving the water inlet pump to inject the brine into the reaction tank, adding hydrogen peroxide by the hydrogen peroxide metering pump, opening the ultrasonic vibrator and the aeration ring, and through the synergistic effect of cavitation and micro-bubble aeration, the oxidation reaction is strengthened, the oxygen generated by the reaction is transported to the combustion chamber to mix and burn with hydrogen, the heat energy generated by the combustion is converted into electricity by the thermoelectric generator to supply power to the ultrasonic vibrator, the ultrapure water in the cold liquid cavity absorbs the waste heat to warm up and preheat the salt dissolving, and after the oxidation reaction is completed, the brine is collected into the adsorption tower assembly for adsorption, so that the content of iodine in the crude salt is efficiently removed.

An oxygen supply pipeline for an oxygen pressure regulator, relating to the technical field of pressure reducing devices, includes a connecting cap, a connector, an oxygen supply hose, and an anti-disconnection device. The anti-disconnection device comprises a quick-connect socket, a locking plate, and a locking spring. The locking plate and locking spring cooperate to achieve automatic locking, preventing oxygen supply interruption. The connecting cap communicates with the low-pressure chamber of the oxygen pressure regulator via a safety valve. The safety valve includes an output housing, a valve core, a pressure adjusting screw, and a pressure adjusting spring, ensuring normal oxygen delivery and preventing safety accidents caused by excessive pressure. This utility model's oxygen supply pipeline has a simple structure, is easy to assemble, has low production costs, and can effectively improve the continuity, stability, and safety of oxygen supply, meeting the oxygen supply needs of different scenarios.

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.

The embodiments of the present application provide a blood monitoring device and a blood monitoring method for traumatic shock, wherein the device comprises: a first detection module, configured to obtain a common carotid artery velocity time integral and a heart rate by detecting carotid artery blood flow; a second detection module, configured to obtain a blood oxygen saturation by detecting the blood oxygen status of the arterial blood flow; a processing module, configured to determine a carotid artery oxygen delivery reflecting the oxygen supply capacity of the carotid artery to the head according to the common carotid artery velocity time integral, the heart rate, the blood oxygen saturation, the common carotid artery area and the hemoglobin value in the blood; in this way, the detection of multiple parameters is achieved, and it is beneficial to quickly obtain the status and changes of the patient's brain oxygen supply and systemic oxygen supply, comprehensively consider the patient's compensatory capacity, thereby judging the patient's overall risk and reducing the probability of the patient suffering from hemorrhagic shock.

The present invention discloses a ventilation flow switchable nasal oxygen delivery device and method, including: a nasal plug component structure; a nasal oxygen main pipe structure, which is connected and arranged with the input end of the nasal plug component structure; a three-way joint structure, wherein the first end is connected and arranged with the nasal oxygen main pipe structure, and the second end of the three-way joint structure is connected and arranged with the oxygen supply pipe structure, and the oxygen supply pipe structure supplies oxygen to the nasal oxygen main pipe structure through the three-way joint structure; a nasal oxygen branch pipe structure, which is connected and arranged with the third end of the three-way joint structure, and the nasal oxygen branch pipe structure is fixedly connected with a docking spring pressure structure; a docking top support structure, which is fixedly set on the nasal plug component structure, and the docking top support structure and the docking spring pressure structure are detachably connected and arranged. The technical problems in the prior art that when using a nasal oxygen tube to adjust the oxygen amount, increasing the oxygen output power will cause the airflow to accelerate, which is not conducive to the recovery of the disease, and directly replacing a large-flux nasal oxygen tube will easily lead to waste.

A system for measuring cardiovascular data includes an elongate member having a channel, a first expandable member carried by the elongate member and movable between a collapsed state and an expanded state by adjustment initiated externally of a subject, a first sensor disposed on a surface of the elongate member, second and third sensors disposed on a surface of the first expandable, a first optical sensor located at a first location in relation to the distal end of the elongate member and configured for obtaining photoplethysmographic data, and wherein the first expandable member in its expanded state is configured to interface with the subject's larynx for delivery of at least oxygen gas into the respiratory system of the subject, and the second and third sensors are configured to contact tissue in proximity to the larynx when the first expandable member is in its expanded state.