66 results about "Nasal catheter" patented technology

The invention relates to the technical field of vehicles, in particular to a vehicle oxygen supply method and device, computer equipment and a storage medium. According to the altitude and the oxyhemoglobin saturation, an oxygen demand index is determined, and the oxygen demand index is in positive correlation with the altitude and is in negative correlation with the oxyhemoglobin saturation; a target oxygen supply mode is determined from candidate oxygen supply modes according to the oxygen demand index, the numerical value of oxygen supply parameters is determined according to the oxygen demand index, and the candidate oxygen supply modes comprise at least two of seat headrest diffusion oxygen supply, air conditioner air outlet oxygen supply and nasal catheter oxygen supply. By adopting the method, the problem of single oxygen supply mode in the prior art can be improved.

The utility model discloses a non-invasive respiration auxiliary fixing suite which can stably and effectively maintain a nasal catheter on the face of a patient, is convenient to adjust the tightness during fixing according to the face shape of the patient, is adaptive to different head shapes or face shapes, and can stably maintain the position of the catheter in the non-invasive respiration treatment period. And the problem of pressure sores in the treatment period can be avoided. According to the technical scheme, the nasal catheter fixing device is characterized by comprising a belt body, a catheter, a nasal tube cover, an attaching piece and an adjusting structure, the catheter is connected with the belt body through the nasal tube cover, the attaching piece is arranged at the position of the catheter and / or the nasal tube cover, the adjusting structure comprises a fixing base, a control button, a linkage assembly and a locking piece, and the control button and the linkage assembly are both arranged on the fixing base. The fixing base is detachably connected to the belt body, the control button moves to drive part of the belt body to be contained in the fixing base, the locking piece is arranged at the control button to limit the state of the control button, the adjustment of the tightness degree of the belt body can be achieved only through one control button, and operation is convenient, fast and efficient.

This application discloses a portable medical nasal cannula storage structure, including a trolley body with a slot at its front end; several storage drawers are installed sequentially from top to bottom inside the slot; a storage tray is installed inside each storage drawer, and a winding groove is formed on the outer circumference of the storage tray; a small UV-C ultraviolet disinfection lamp is installed at the bottom of each storage drawer for disinfecting the lower drawers. According to this portable medical nasal cannula storage structure, the trolley body is integrally injection molded from medical-grade ABS material, and equipped with universal wheels with brakes at the bottom, ensuring structural stability and resistance to medical disinfectant corrosion, while also enabling flexible movement and fixed-point locking, improving portability and safety; the slotted structure at the front end of the trolley body allows for the secure installation of layered storage drawers, and the storage tray is made of moisture-proof modified PP material with winding grooves to ensure standardized winding and storage of the nasal cannula.

The invention discloses an oxygen inhalation tube fixing device, and belongs to the technical field of oxygen inhalation tube fixing equipment, the oxygen inhalation tube fixing device comprises a nasal cavity fixing device, a lower jaw limiting device and an oxygen inhalation tube, the lower jaw limiting device is clamped and mounted at the lower jaw of a patient, the nasal cavity fixing device is clamped and mounted in a nostril, and the oxygen inhalation tube is clamped and mounted in the nasal cavity fixing device. In order to reduce the damage to the skin when the oxygen inhalation tube is fixed, ensure the stability of the oxygen inhalation tube in the oxygen inhalation process and prevent the oxygen inhalation tube from influencing normal diet of a patient, the oxygen inhalation tube fixing device is provided, an intranasal structure is automatically expanded through a spiral expansion structure, the stability of a nasal catheter part in a nasal cavity is improved, and the oxygen inhalation tube fixing device is convenient to use. Meanwhile, the oxygen tube behind the ear is limited, so that the oxygen tube is wound to the lower jaw, and the oxygen tube is prevented from shielding the mouth.

A catheter assembly (1) for use in septoturbinatoplasty procedures. The catheter has a shaft (20) and a primary balloon (10) which comprises a base (B) for positioning against the nasal floor, a roof (R) opposed from the base (B) and a side surface (SS) extending therebetween for bearing against a nasal septum and / or an inferior turbinate. The base (B) has a width greater than the roof (R) in a direction transverse to the axis of the shaft (20). The balloon (10) can be inserted into a patients nasal cavity and inflated to realign the patient's septum and / or treat the turbinate.

The utility model discloses an anti-skidding earcap type nasal catheter fixing device, which comprises a nasal catheter main body, one end of the nasal catheter main body is encircled into a ring shape, the other end of the nasal catheter main body is in a straight line shape with two parallel tubes, the straight line end of the nasal catheter main body is provided with a binding piece, and the ring-shaped end of the nasal catheter main body is fixedly communicated with an oxygen outlet. The ring-shaped end of the nasal catheter body is symmetrically and fixedly sleeved with two anti-skid ear caps, and a binding assembly is arranged at the ring-shaped end of the nasal catheter body. Compared with the prior art, the anti-slip earcap type nasal catheter fixing device is simple in structure, convenient to operate and easy to assemble, under the cooperation of the anti-slip earcaps and the binding assemblies, nasal catheters can be fixed more firmly, the anti-slip effect is good, the nasal catheters are not prone to falling off, smooth oxygen therapy is guaranteed, and the comfort level of patients is improved.

The high-oxygen ischemia pre-adaptation device comprises a high-oxygen module and an ischemia pre-adaptation module, the high-oxygen module comprises an oxygen bottle, an oxygen electromagnetic valve and a nasal catheter, the oxygen bottle is fixedly connected with the input end of the nasal catheter through the oxygen electromagnetic valve, and the other end of the nasal catheter is used for a user to inhale oxygen; the ischemia pre-adaptation module comprises an air pump and an ischemia pre-adaptation assembly, the ischemia pre-adaptation assembly comprises a circuit control board, a high-pressure electromagnetic valve, a low-pressure electromagnetic valve, a pressure reducing valve and a cuff connecting pipe, the input end of the high-pressure electromagnetic valve is fixedly connected with the output end of the air pump, and the output end of the high-pressure electromagnetic valve is fixedly connected with the input end of the pressure reducing valve; the output end of the pressure reducing valve is fixedly connected with the input end of the low-pressure electromagnetic valve, and a cuff connecting pipe is arranged between the pressure reducing valve and the low-pressure electromagnetic valve and used for being connected with a cuff. The high-oxygen ischemia preconditioning device provided by the invention can better treat the user, and can shorten the treatment cycle, so that the treatment effect reaches an expected ideal level.

The utility model relates to medical auxiliary technique field, concretely relates to nasal stomach tube paste, including sticking and nasal paste piece on the nose, and with the pipe paste piece for nasal catheter fixed, be provided with connecting portion between the nasal paste piece and pipe paste piece, the connecting portion is the belt body, and both ends of the inner surface of belt body are provided with magic paste hook face and nap face respectively, and the belt body is wound on the nasal paste piece and is fixed through magic paste hook face and nap face connection, the utility model discloses the design of vertical connection, and the tension can be more evenly distributed on the surface of adhesive tape, and cooperate with the rubber band of the outer surface of belt body and set up and further increase the friction force with the nose portion and contact the nose portion, so the influence to the nasal paste piece is more balanced, reduces the risk that the adhesive tape slides or shifts.

The utility model relates to the technical field of medical instruments, in particular to a cardiovascular medicine oxygen uptake nasal plug fixing device which comprises a connecting assembly, the connecting assembly comprises a mounting plate, connecting plates are symmetrically and movably arranged on the upper surface of the mounting plate, and a fixing assembly is mounted on the upper surfaces of the two connecting plates and used for fixing the two connecting plates. The fixing assembly comprises a plurality of supporting rods symmetrically arranged on the upper surfaces of the two connecting plates, and the supporting rods are provided with two mounting rings. According to the nasal catheter fixing device, the mounting plate is doubly fixed from the head of a patient to the positions above and below the ears through the two tying ropes, then the nasal catheter is mounted in the fixing assembly, the fixing assembly is adjusted, the conical pieces are unfolded, the unfolding angle is adjusted according to the size of the nostrils of the patient, the conical pieces are supported on the inner walls of the nostrils, and the nasal catheter is fixed; the nasal catheter is prevented from falling off from the nostril by pulling the head ring when the head is moved, and potential safety hazards caused by oxygen deficit of a patient are reduced.

The utility model discloses a nasal catheter temperature sensor integrated protective shell, which comprises a connecting sheet, two sleeves are fixed on the lower surface of the connecting sheet in a conducting manner, one side of each sleeve is provided with a through hole, the through holes are arranged on the lower surface of the connecting sheet, one end of the connecting sheet is fixedly connected with two first connecting belts, the first connecting belts are fixedly connected with female buckles, and the female buckles are fixedly connected with the connecting sheets. A male buckle is clamped and fixed on the female buckle, and the male buckle is fixedly connected to the other end of the connecting piece; according to the utility model, the nasal catheter and the mouth-nose thermosensitive airflow sensor can be integrally fixed and protected, so that the problems that the device is easy to slip and abrade with each other and the probe is easy to break due to separate use of the nasal catheter and the mouth-nose thermosensitive airflow sensor at present are solved, and meanwhile, the stimulation area of the nasal catheter and the mouth-nose thermosensitive airflow sensor on local nasal mucosa is reduced when the nasal catheter and the mouth-nose thermosensitive airflow sensor are used; in addition, the disposable medical nursing bed is convenient to disassemble and assemble, can be repeatedly disassembled and disinfected, and can be repeatedly used, so that the medical cost is effectively reduced.

The utility model discloses a conversion device suitable for mask oxygen uptake and nasal catheter oxygen uptake of an anaesthesia machine, which relates to the technical field of medical equipment and comprises a round-cake-shaped base station, a small piston is arranged at one end of the base station, a large piston is arranged at one end, far away from the small piston, of the base station, and a flexible belt is arranged on the side face of the base station. A circular ring fixing structure is arranged at one end of the flexible belt away from the base. The breathing pipeline adapter connected with the anesthesia machine is fully utilized, the breathing pipeline adapter two-way piston is researched and developed, the oxygen output end of the breathing pipeline adapter can be communicated with the mask and the nasal catheter, switching between the mask and the nasal catheter is safe and portable, and clinical anesthesia work is safer and more convenient.

The invention discloses a clinical prediction method for PACU precise extubation of an old general anesthesia long-term mechanical ventilation patient, and belongs to the field of clinical medicine statistics, and the method comprises the steps: S1, carrying out the inclusion of the patient according to a preset inclusion standard and an exclusion standard; s2, informing the elderly patients meeting the inclusion standard of agreement; s3, anesthesia resuscitation is conducted on the old general anesthesia patient entering the PACU, and then whether the patient can conduct a spontaneous respiration test or not is judged according to evaluation before off-line and predefined off-line preparation of an SBT test; s4, bedside lung ultrasonic examination is carried out before tube drawing, the trachea cannula is pulled out after the SBT test is passed, nasal catheter oxygen inhalation (3 L / min) is conventionally carried out after tube drawing, the blood oxygen saturation degree is recorded, and blood gas analysis examination is carried out 5 min after tube drawing; s5, predicting the possibility of tube drawing through the column diagram constructed by the method; according to the invention, medical staff can be guided to determine the preparation condition of extubation of old patients after general anesthesia, and long-term negative effects related to extubation failure can be reduced as much as possible.

The utility model relates to the technical field of medical inflatable pillows, in particular to a post-anesthesia observation air pillow. The air pillow comprises an air bag pillow body, a transverse bag body is arranged on one longitudinal side of the air bag pillow body, and the transverse bag body is higher than the middle area of the pillow face of the air bag pillow body after being inflated and used for lifting the neck of a patient; the inflation pump is communicated with the air bag pillow body and the transverse bag body through a pipeline; the sensor is in pipeline connection with a nasal catheter and is used for detecting the end-tidal carbon dioxide concentration of a patient; and the controller is in communication connection with the sensor and the inflator pump and is used for regulating and controlling the inflator pump to inflate according to the carbon dioxide concentration. The sensor is connected with the nasal catheter to detect the end-expiratory carbon dioxide concentration of a patient, the controller automatically regulates and controls the inflator pump to inflate according to the carbon dioxide concentration, the transverse bag body protrudes out of the pillow face after being inflated to enable the patient to raise the head to open an airway, the head position of the patient can be automatically adjusted, and the respiratory tract blockage condition is improved.

The invention provides a multi-channel composite connection monitoring pipeline structure integrated with NO infusion. The multi-channel composite connection monitoring pipeline structure comprises an infusion catheter, an oxygen input connector, a rotary conversion connector, an NO injection tee joint, a gas sampling tee joint, an oxygen flow sensor and a mixed gas flow sensor. NO is injected into the infusion catheter through the NO injection tee joint and is mixed with oxygen in the infusion catheter, the gas sampling tee joint is located on the downstream of the first connecting pipe of the infusion catheter to obtain stable mixed gas for real-time concentration monitoring, and the two flow sensors are used for monitoring the oxygen and the gas flow after the NO and the oxygen are mixed in real time respectively. The rotary adapter is quickly compatible with a nasal catheter, a mask and an extracorporeal circulation related interface, so that cross-scene seamless connection of intraoperative and postoperative NO treatment is realized. According to the invention, the frequency of pipeline replacement is reduced, the risks of gas leakage, misconnection and pollution are reduced, the stability and controllability of oxygen and NO gas delivery are improved, and the safety and effectiveness of NO infusion are improved.

The invention relates to the technical field of medical apparatus and instruments, in particular to a fixing device suitable for preventing a nasal oxygen cannula from falling off during ear postoperative oxygen uptake. Comprising an oxygen therapy main pipe, the oxygen therapy main pipe is connected with a nasal catheter, the nasal catheter is connected with an oxygen inhalation head, the oxygen therapy main pipe is connected with a connecting piece, the connecting piece is connected with an oxygen connector, the oxygen therapy main pipe is connected with a fixing piece, the fixing piece is connected with a support, the support is connected with a fixing belt and an extension belt, and the fixing belt and the extension belt are jointly and detachably connected with a first adjusting sleeve and a second adjusting sleeve. The first adjusting sleeve and the second adjusting sleeve are connected with clamping seats respectively, the fixing belt and the extending belt penetrate through the corresponding clamping seats respectively, the first adjusting sleeve and the second adjusting sleeve are detachably connected with an adjusting ring together, clamping holes are formed in the adjusting ring, and the fixing belt and the extending belt penetrate through the clamping holes respectively. By means of the oxygen uptake fixing device, postoperative oxygen uptake of a patient can be facilitated, the oxygen uptake tube is better fixed and prevented from falling off, a wound is prevented from being directly pressed through the fixing device, and pain and discomfort of the patient are reduced.

The utility model discloses an oxygen inhalation tube capable of adjusting flow, which comprises an oxygen regulator, an air inlet channel and an air outlet channel which are communicated with each other are arranged in the oxygen regulator, the air inlet channel is arranged along a first direction, and a second pipeline is arranged along a second direction; an adjusting valve is arranged at the communication part of the gas inlet channel and the gas outlet channel, and at least part of the adjusting valve is exposed out of the oxygen regulator; the air inlet channel is externally connected with air supply equipment, and the air outlet channel is communicated with a nasal catheter. According to the nasal catheter with the oxygen regulator, the oxygen regulator is arranged to achieve regulation of the size and the flow speed of inlet air flow, the first branch pipe used for air outlet in the nasal catheter is arranged to be of the structure with the top end in the arc shape, specifically, the first branch pipe is further provided with a plurality of micropores, and the comfort degree can be improved by releasing air through the micropores.

The invention discloses a nasal catheter device with a monitoring function, and relates to the field of medical treatment, and the nasal catheter device comprises an optical fiber acoustic sensing element which is used for converting vibration and / or pressure fluctuation of breathing sound waves of a patient into optical signals; the electronic module is used for receiving an optical signal from the optical fiber acoustic sensing element and converting the optical signal into an electric signal for respiration monitoring, and the electronic module is used for giving an alarm when respiration sound waves reach a preset condition and sending monitoring data to a mobile terminal. Therefore, according to the nasal catheter device with the monitoring function, the nasal catheter body, the optical fiber acoustic sensing element and the electronic module are integrated, the nasal catheter device can have the independent respiration monitoring function and the early warning function, the structure is simple, use is convenient, accuracy and reliability are achieved, meanwhile, the safety and the intelligent level of the oxygen therapy process can be remarkably improved, and the practicability is high. And compared with external monitoring equipment, the cost is low, and the workload of medical staff can be reduced.

The utility model relates to a unilateral oxygen inhalation tube for nasogastric tube patients, which comprises a main tube, one end of the main tube is provided with a connector, the other end of the main tube is connected with two branch tubes through taps, the end portions of the two branch tubes are jointly connected with an adapter tube, the outer surface of the adapter tube is connected with a nasal catheter, and the outer surface of the adapter tube is provided with an n-shaped portion. And clamping mechanisms are arranged on the outer surfaces of the two branch pipes. Through the arrangement of the nasal catheter, the purpose of single-side oxygen inhalation for a patient can be achieved, through the arrangement of the n-shaped part, the stomach tube can penetrate through the lower portion of the nasal catheter, the stomach tube can penetrate through the nasal catheter conveniently to be fixed, compared with a nasal plug, the nasal catheter cavity is small, high in compliance and soft in texture, stimulation to nasal mucosa can be reduced, meanwhile, the patient feels comfortable, the catheter cannot be pulled, and the patient can feel comfortable. According to the oxygen inhalation tube, the oxygen inhalation compliance of a patient is improved, the satisfaction degree of the patient is improved, the two branch tubes can be locked and fixed through the clamping mechanism, the wearing stability of the oxygen inhalation tube is improved, and the situations of loosening and slipping are avoided.

The utility model relates to a nasal oxygen cannula containing device which comprises a nasal catheter containing box and a bottle sleeve, the nasal catheter containing box comprises a box body and an upper turning cover, two grooves are formed in the opening side of the upper turning cover, after the upper turning cover is buckled with the box body, two nasal oxygen cannula via holes are formed by the two grooves and the upper edge of the box body, and the bottle sleeve is arranged on the bottle sleeve. A hook is arranged on the box body, and the nasal catheter storage box is hung on the bottle sleeve through the hook. During intermittent oxygen inhalation, the nasal catheter at one end of the nasal oxygen tube is accommodated through the nasal catheter accommodating box, the nasal catheter accommodating box is hung on the bottle sleeve, and the other end of the nasal oxygen tube is fixed on the humidification bottle, so that the two ends of the nasal oxygen tube are effectively fixed to a certain extent on the basis of effectively keeping the nasal catheter clean; and the nasal oxygen cannula is prevented from falling off and being wound.

The utility model relates to an oxygen pipe conversion device which comprises a nasal catheter, a mask, an oxygen pipe, an atomization pipe and a conversion device body, and the conversion device body comprises a shell, a ball valve mechanism and a column valve mechanism. A nasal catheter connecting pipe and a mask connecting pipe are arranged on the two sides of the upper portion of the shell respectively, the outer end of the mask connecting pipe is communicated with the mask, and a nasal catheter is arranged on the side face or the upper face of the nasal catheter connecting pipe. A rectangular hole is dug in the position, corresponding to the column valve mechanism, of the shell, and an oxygen connecting pipe communicated with the oxygen pipe and an atomization connecting pipe communicated with the atomization pipe are arranged on the two sides of the lower portion of the shell respectively. According to the device, oxygen uptake and atomization are bifurcated by arranging the conversion device and output through two selectable pipelines by sharing one connector, oxygen uptake through a mask and oxygen uptake through a nasal catheter can be achieved, operation is convenient and rapid, and the use mode is flexible.

The utility model discloses a tracheoscope mouthpiece with nasal catheter fixing function, including a medical staff is in the tracheoscope examination of patient is put into the mouth of patient for its upper jaw teeth and lower jaw teeth occlusion bite body, in the middle part of bite body along its axial direction direction is equipped with the tracheoscope detection channel of the tube body of tracheoscope from its patient mouth part and needs to carry out the position of detection. The utility model discloses through nasal catheter fixing structure can effectively fix nasal catheter, not only has reduced the labor intensity of medical staff, and also has improved the inspection efficiency of tracheoscope, has brought greater convenience to the inspection work of tracheoscope.

The utility model relates to medical instrument technical field especially, more particularly to a child type nasal catheter oxygen inhalation device not easy to fall off pipe, including headband etc.

A nasal catheter system includes a headgear and a nasal catheter for delivering oxygen to the nostrils of a patient. Oxygen enters an interface located on the side of the head and above or below the ears. The system uses a flat tube made of a flexible material, which is comfortable to the face and produces less pressure to the skin. The system reduces the noise of oxygen by the oxygen first entering a catheter having an expanded volume prior to entering the nostrils. The catheter is secured above and away from the ears by the headband of the two straps. The two strips provide better stability for the interface. The belt penetrates through a gap in the back face of the triangular pad to be connected. The strap can be adjusted on each side of the head to achieve comfort and stability.

The invention discloses an oxygen inhalation device capable of monitoring the oxygen inhalation state of a patient. The oxygen inhalation device comprises a nasal catheter assembly connected with an oxygen supply source, an oxygen supply existence detection module, an inspiration existence detection module and a judgment and timing module. The oxygen supply existence detection module detects the pressure difference through a throttling structure in the main oxygen supply channel and a first pressure detector so as to judge the oxygen supply state; the inspiration existence detection module detects the snorting state through a pressure tapping hole in the nasal vestibule and a second pressure detector. The judging and timing module accumulates effective oxygen uptake time when oxygen supply and snuffing signals meet conditions at the same time, and can dynamically correct a judging threshold value to adapt to working condition differences such as water level changes of a humidifying bottle. A low-damping microporous cover and a waste liquid cavity are arranged outside the pressure tapping hole to prevent blockage and keep signals stable, and the device can prompt states such as mouth breathing and abnormal oxygen supply and record events. The device is simple in structure, good in compatibility and capable of accurately and stably metering the effective oxygen uptake time in a complex clinical environment.

The invention relates to a method for operating an execution element (22) in a medical device (20), wherein the execution element (22) is connected to a hose system. The medical device (20) has a control device (28) with a pressure regulator (35) for regulating the gas pressure and a computing system (30), wherein the method comprises the following steps: - providing a nasal catheter on the hose system, - setting a nasal gas end pressure on the pressure regulator (35), - regulating the nasal gas pressure on the execution element (22) by means of the pressure regulator (35), in particular towards the nasal gas end pressure, - delivering the regulated gas from the execution element (22) to the hose system. The invention also relates to a device for operating an execution element (22).

The utility model relates to the technical field of medical instruments, and discloses a decompression oxygen pipeline protection structure which comprises an oxygen uptake tube and a nasal catheter, the oxygen uptake tube is clamped in an inner cavity of the nasal catheter, the side wall of the oxygen uptake tube is in sliding connection with a plurality of installation frames, clamping assemblies are installed on the inner walls of the installation frames, and the clamping assemblies are used for fixing the installation frames; according to the decompression oxygen pipeline protection structure, the side wall of the oxygen inhalation tube is sleeved with the mounting frame, then the mounting frame is sleeved with the foam cotton, the foam cotton is used for buffering the pressure of the oxygen inhalation tube on the face and the skin behind the ears, the pressed part of a patient can be protected, a sliding column and a clamping block are pressed downwards to slide to the bottom of a rotating wheel, and at the moment, the rotating wheel can rotate on the outer wall of the oxygen inhalation tube; and after adjustment is completed, the sliding column is loosened, the clamping block can return to the position between the rotating wheels, the rotating wheels are clamped, and the rotating wheels cannot rotate, so that the position of the mounting frame is fixed, and the mounting frame and the foam are prevented from sliding and falling off in the wearing process.

The utility model relates to a device for fixing a nasal catheter to inhale oxygen, which comprises a protection pad, an arch-shaped pad is arranged at the upper end of the protection pad, and a fixing helmet is arranged at the upper end of the protection pad close to the arch-shaped pad. The utility model relates to the technical field of medical instruments for babies. According to the device for fixing the nasal catheter for oxygen inhalation, the fixing helmet is arranged and used for fixing a nasal cavity cannula to the face of a neonatal patient, and the inner wall of the fixing helmet is arranged to be in an arc shape, so that the head of the neonatal patient can be supported in multiple directions; the pressure for fixing the nasal cavity cannula is uniformly distributed on the head of a neonatal patient, so that the skin of the neonatal patient can be effectively prevented from being injured by an adhesive tape, and the head of the neonatal patient can be prevented from being extruded by facilities such as an elastic band or a bandage, so that the aim of improving the comfort of the neonatal patient is fulfilled; and the problem that the head of the premature infant becomes flat due to long-term hospitalization can be effectively avoided.

The invention relates to the technical field of medical instruments, in particular to a double-nasal-cavity tube suitable for small premature infants and a pressure compensation method of the double-nasal-cavity tube. Comprising a sectional catheter structure, a nasal catheter adaptation system and an intelligent pressure compensation module. The sectional catheter structure comprises a neonatal nasal cavity adaptive section, a flexible transmission section and a control end, the length of the neonatal nasal cavity adaptive section is 10 cm, and the length of the flexible transmission section is 2.8 m; the inner diameter of the nasal cavity adapting section is gradually changed, the inner diameter of the front end is 5 mm, the inner diameter of the tail end is 4 mm, and the transmission section is of a corrugated pipe structure; the nasal catheter adaptation system comprises a 3D printing customized nasal cavity model, a memory sponge composite layer and an adjustable silica gel fixing band, and the 3D printing customized nasal cavity model refers to FetalGrowth Charts data. The method has the beneficial effects that the ventilation efficiency is improved, specifically, through the structural design of the sectional type guide pipe and ventilation resistance optimization, the oxygen saturation maintaining time is prolonged by 25% according to actual measurement, the tail end ventilation capacity loss is smaller than or equal to 10%, and the ventilation efficiency is remarkably improved.

The utility model discloses a safe, portable oxygen uptake device relates to medical instrument technical field, including humidifying cup subassembly and oxygen uptake tube subassembly, humidifying cup subassembly includes the air inlet chamber that is located below, the side face of air inlet chamber is provided with the air inlet, the upper surface of air inlet chamber is fixedly connected with a water storage chamber through flange, and the oxygen uptake tube subassembly is connected with the water storage chamber through the flange. The waterproof breathable film is arranged at the flange connection position of the air inlet cavity and the water storage cavity, the air outlet and the water injection port are formed in the upper portion of the water storage cavity, and even if the air inlet pipe and the air outlet pipe are mistakenly installed reversely, water cannot flow into the nasal cavity of a patient along the oxygen pipe. The oxygen uptake tube assembly comprises an oxygen catheter, the lower end of the oxygen catheter is sleeved on an air outlet of the humidifying cup assembly, the upper end of the oxygen catheter is connected with a tee joint, a reversing switch is arranged in the tee joint, a left outlet and a right outlet of the upper end of the tee joint are respectively connected with a nasal catheter and a mask oxygen uptake tube, and oxygen uptake modes can be switched quickly.

The invention relates to the technical field of flavor science and sensory detection, and provides a quantifying device for post-nasal aroma concentration, a sensing threshold determination method and application. The quantitative device comprises a nasal catheter, a flow divider, a dryer, an aroma trapping structure and analysis equipment, and can be used for specially collecting aroma released by a nasal passage in the oral cavity processing process and carrying out concentration quantitative analysis. According to the quantitative device expansion method for the post-nasal aroma concentration, by establishing an aroma post-nasal perceptual concentration and perceptual intensity scoring model, the scientific determination of the lower limit perceptual concentration and the upper limit perceptual concentration of target aroma is realized. Furthermore, the optimal adding proportion interval of the aroma components in the product is deduced in combination with the perception difference of people, and is used for guiding formula optimization and establishment of sensory evaluation standards. According to the invention, controllable quantitative sampling and sensing of the afternose path aroma are realized, the flavor regulation and control efficiency and sensory quality of products such as food, spices and medicines are improved, and the afternose path aroma sensing device has wide application value.