1158 results about "Trach tube" patented technology

The invention provides a degradable combined type tracheal stent and an implantation method, the degradable combined type tracheal stent comprises a plurality of rib plates which are coaxially arranged and are in an annular shape and soft bodies which are connected between every two rib plates and are in a net shape, and axial length adjustability and axial bending deformation of a stent main body are achieved through the soft bodies; the support further comprises a connecting part, the connecting part comprises a first connecting body arranged at the two axial ends of the support body and a second connecting body matched with the first connecting body, and the first connecting body and the second connecting body are matched to achieve axial detachable connection and combination between every two support bodies. The adjustable axial length of the stent main body, bionic axial bending deformation and stable connection and combination between every two stent main bodies are effectively realized. The invention further provides an implantation method of the degradable combined type tracheal stent, the implantation method comprises the steps of obtaining the size of the diseased trachea, determining the diameter and the combination number of the stent body, sleeving the diseased trachea and connecting the combination to complete implantation, and the method is easy to operate and can meet different requirements of clinical complex environments.

An endotracheal tube apparatus to treat a patient comprising an endotracheal tube and a hub connection fitting; the endotracheal tube insertable into a trachea of the patient; the hub connection fitting connectable to the endotracheal tube; a ventilation passageway extending through the hub connection fitting and a ventilation lumen of the endotracheal tube; a plurality of ports joined with the hub connection fitting, the plurality of ports comprising at least a first port and a second port; a first passageway extending within the hub connection fitting, the first passageway in fluid communication with the first port; a second passageway extending within the hub connection fitting, the second passageway in fluid communication with the second port; a third passageway extending within the hub connection fitting and a secondary lumen of the endotracheal tube.

The invention discloses a three-dimensional pulmonary nodule detection method and system based on morphological adaptation convolution, and the method comprises the steps: obtaining a chest CT image sequence, and carrying out the preprocessing of all chest CT images in the chest CT image sequence; according to the three-dimensional pulmonary nodule detection method and system based on form adaptive convolution, scale factors are introduced into a 3D dynamic convolution layer and cooperate with the offset, so that the position of a convolution kernel sampling point can be adaptively adjusted according to the form and size of the pulmonary nodule, and the problem that the traditional fixed convolution is difficult to adapt to the size difference and form heterogeneity of the pulmonary nodule is solved; stable detection of pulmonary nodules with different sizes, especially tiny pulmonary nodules, is realized; space coordinate information and multi-scale features are combined through a channel space attention module, extraction of key information such as pulmonary nodule edge texture and density gradient is enhanced, interference of blood vessel, trachea and CT artifacts is inhibited, and the problem that small nodules and background noise are difficult to distinguish is solved.

Two ends of a flexible pipe are fixedly connected to a grip and a magnetic guide ring respectively, an electromagnet is fixedly mounted in the magnetic guide ring, a rubidium magnet is connected to the outer end of the magnetic guide ring in a threaded fit manner, a through hole is formed in the magnetic guide ring, and one end of an air pipe is communicated and connected to the through hole; the magnetic attraction mode can be selected according to the type of metal, when large-size metal needs to be picked up, only the rubidium magnet needs to be installed on the magnetic guide ring, the metal can be attracted to the rubidium magnet, and cleaning and collecting are convenient; when some metal chips are cleaned, the electromagnet brings magnetic force to the magnetic guide ring, so that the metal chips are adsorbed on the magnetic guide ring; during discharging, only the electromagnet needs to be closed, the magnetic force of the magnetic guide ring disappears, the chippings can fall off, in order to prevent the chippings from being attached to the interior of the magnetic guide ring, the chippings can be blown out of the magnetic guide ring by blowing air into the air pipe, and follow-up use is facilitated.

A system and method for targeted stimulation with a tracheal phrenic nerve stimulation device that can include: performing an initialization routine of a stimulation module that determines a set of stimulation parameters, the initialization routine comprises: cycling through electrode groupings, detecting a response in a respiratory signal for each electrode grouping, and determining a select electrode grouping as part of the stimulation parameters; and operating a stimulation module using the set of stimulation parameters.

The utility model discloses a glass bottle conveying mechanism, which relates to the technical field of glass bottle conveying and comprises a base and a mounting seat, a conveying belt is rotatably connected to the inner side of the conveying belt, a fixing rod is fixedly connected to the bottom of the conveying belt, a mounting plate is fixedly connected to the bottom of the fixing rod, and a fixing cylinder is fixedly connected to the bottom of the mounting plate. An air bag is fixedly connected to the bottom of the fixing cylinder and communicates with the inner space of the fixing cylinder, an inflation device is fixedly connected to the upper side of the mounting plate, an air pipe is fixedly connected between the inflation device and the fixing cylinder, an exhaust port is formed in the outer portion of the fixing cylinder, and an exhaust mechanism is mounted on the outer portion of the fixing cylinder. According to the device, rapid installation is completed by simply inflating the air bag to abut against the opening of the glass bottle, the air bag can be conveniently deflated to demount the glass bottle, the glass bottle can be rapidly demounted and mounted through the simple device, the manufacturing cost of the conveying device is greatly reduced, the glass bottle mounting and dismounting efficiency is improved, and machining and production of the glass bottle are facilitated.

The invention relates to a tissue engineering trachea, which combines an additive manufacturing technology with a biological material, simulates the form and the function of a natural gas pipe, designs a cartilage-fiber alternating ring structure and a bionic fiber band structure, and designs a unique blood supply channel in a fiber section. The trachea fiber section is composed of hydrogel with a hierarchical porous structure, and a circumferential blood vessel channel and a radial blood vessel pore channel are designed in the hydrogel so as to promote ingrowth and growth of new blood vessels and optimize the blood supply reconstruction process. The tracheal cartilage section is made into a C-shaped cartilage ring with cartilage cells through a biological printing technology, and necessary mechanical support is provided. The fiber segment and the cartilage segment are effectively integrated through chemical bonds of functional groups to ensure stable connection of the two. Partitioned construction of fibers and cartilage is achieved through the biological 3D printing technology, the bionic tissue engineering trachea is formed in a modular construction-integrated assembly mode, it is verified that repairing and reconstruction of multiple types of tissue bionic tracheas can be achieved, and an innovative solution is provided for tracheal injuries.

The invention relates to the field of breath sound monitoring, and discloses a tracheal intubation device and a breath sound monitoring system.The tracheal intubation device comprises a tracheal catheter used for being inserted into an airway of a patient; the first sound detection piece is an optical fiber sound sensor, the first sound detection piece is installed on the tracheal catheter, the first sound detection piece is used for detecting breathing sound wave information in the airway of a patient, and the first sound detection piece is used for being in communication connection with the monitoring host so as to transmit the detected breathing sound wave information to the monitoring host. Therefore, the first sound detection piece is installed on the tracheal catheter, the first sound detection piece can be directly located in the internal environment of the airway of the patient, the accuracy of monitoring breathing sound and sound wave information of the patient through the tracheal intubation device can be improved, and the first sound detection piece transmits the breathing sound and sound wave information to the monitoring host in real time; the medical staff can monitor the breathing condition of the patient in real time through the monitoring host, find out abnormal breathing of the patient in time and carry out treatment.

Various embodiments provide an endotracheal tube having a body comprising a flexible hollow tube with a distal end for insertion into a patient's trachea during intubation, and an opposite proximal end. Some embodiments comprise one or more internal projections, said internal projections projecting radially inwardly from an internal wall surface of a distal tip portion of the endotracheal tube, wherein the internal projections are tapered in at least one direction. Some embodiments comprise at least one internal projection projecting radially inwardly from an internal wall surface of a distal tip portion of the endotracheal tube, wherein the internal projection comprises a radiopaque portion. Some embodiments comprise an endotracheal tube body which comprises a polymeric material comprising a helically wound, meshed or braided reinforcement structure embedded therein, the helically wound, meshed or braided reinforcement structure being formed from one or more filaments, and wherein one or more properties of the reinforcement structure vary along the length of the endotracheal tube such that the bending flexibility and / or the mechanical strength of the endotracheal tube varies along the length of the endotracheal tube. Some embodiments comprise a pair of longitudinally spaced locally thinned circumferential wall portions provided at a distal end region of the endotracheal tube. Also described are intubation systems including such endotracheal tubes.

The invention provides a tracheal catheter fixing and patient falling prevention linkage nursing device. The device comprises a tracheal catheter fixing module, a falling prevention detection module, an alarm intervention module and an interaction management module. The tracheal catheter fixing module is used for ensuring that the tracheal catheter does not slip or shift in the body position change or nursing process of a patient; the anti-falling detection module is used for monitoring the body position change of a patient on the nursing bed in real time; the alarm intervention module is used for giving an alarm to medical staff when potential dangers are monitored; the interaction management module is used for optimizing a risk reminding strategy in combination with medical care feedback of the device in the use process; by means of the linkage mechanism of catheter fixing and body position monitoring, accurate recognition and intelligent early warning of tracheal catheter slipping and the risk that a patient falls off a bed are achieved, and the safety and the active intervention capacity of clinical nursing are remarkably improved.

The invention discloses a tracheal intubation path feature extraction method and device based on AI analysis, and relates to the technical field of intelligent medical robotics.The method comprises the steps that an optical flow method is used for preprocessing an input matrix, an epiglottis deformation displacement field is calculated, the epiglottis deformation displacement field is imported into ANSYSMechical for finite element analysis, and a three-dimensional tracheal path topological graph is obtained; carrying out fluid-solid mechanical joint simulation on the three-dimensional air pipe path topological graph by adopting a COMSOLMultiphysics multi-physics coupling solver, so as to obtain a lifting parameter; an impedance control instruction is generated according to the lifting parameters, and the cooperative mechanical arm is driven to execute the impedance control instruction; and on the basis of the multi-modal data of the laryngoscope after the impedance control instruction is executed, updating the material parameters of ANSYSMechical through a strategy gradient algorithm. According to the method, the problem that optimization of closed-loop feedback driving parameters is missing is solved through a target function gradient direction and step size zooming mechanism.

The utility model belongs to the technical field of gas chromatography detection, and discloses a portable gas chromatography analysis device with a pipeline storage function, which comprises a sample gas detection assembly and a chromatographic column communicated with the sample gas detection assembly through a gas pipe, and further comprises a winding assembly, the winding assembly comprises a winding disc, the winding disc comprises a first winding disc and a second winding disc, and the winding disc is connected with the sample gas detection assembly through a gas pipe. The first winding disc and the second winding disc are coaxially and fixedly connected through a fixing shaft. The supporting disc is rotationally connected with the first winding disc, and a plurality of through grooves are formed in the supporting disc in the circumferential direction of the circle center of the supporting disc; the number of the supporting plates is multiple, and the supporting plates are arranged in the through grooves in a sliding mode; the driving unit is used for driving the supporting plate to slide in the through groove; according to the scheme, the distance between each supporting plate and the circle center of the supporting disc is adjusted through the driving unit, and a diameter-variable winding space is formed; the portable gas chromatographic analysis device solves the problem that an existing gas chromatographic analysis device is poor in portability.

The utility model discloses a gastrostomy tube, and belongs to the field of medical equipment. Comprising a tube body, a connecting piece and a connecting piece, wherein one end of the tube body is provided with an air bag; one end of the stomach catheter and one end of the gas-guide tube extend out of the end, away from the gas bag, of the tube body, and the other end of the stomach catheter is flush with one end of the tube body. A control button used for controlling the air bag to stretch out of the tube body is arranged at the end, away from the air bag, of the air guide tube. The gastrostomy tube has the advantages that the gastrostomy tube can be conveniently placed in the stomach and is not prone to sliding out.

The utility model discloses a protective bib used after tracheostomy. The protective bib used after tracheostomy comprises a bib body, a scarf and a pocket, wherein the scarf and the pocket are connected with the bib body. A through hole for avoiding the trachea cannula is formed in the neckerchief; the pocket is provided with an opening; the bib bag is connected with the bib body through the rotary connecting device, so that an opening of the bib bag faces upwards. According to the tracheal cannula, the scarf can be fixed to the neck of the patient, the through hole in the scarf corresponds to the tracheal incision of the patient in position, interference between the scarf and the tracheal cannula is avoided, and the scarf can prevent sputum from infiltrating the skin and the tracheal cutting dressing. The bib body is located on the chest and the abdomen of a patient, liquid such as sputum and medicine is prevented from wetting or polluting clothes, the liquid flows into the bib bag along the surface of the bib body under the action of self weight to be collected, and environment pollution is avoided. When the patient moves or changes in the lying position, the pocket is rotated and the position of the pocket is adjusted, so that the opening of the pocket faces upwards, and the situation that the opening of the pocket faces downwards or the pocket inclines to spill liquid in the pocket is avoided.

The invention discloses a tracheal catheter special for upper gastrointestinal endoscopic surgery, which comprises an inner tube, an outer tube capable of sliding up and down with the inner tube is sleeved outside the inner tube, the top end of the outer tube is fixedly connected with the inner tube through a fixing knob, a respirator joint is arranged at the top end of the inner tube, an inner tube water bag is arranged at the bottom of the inner tube, and an outer tube water bag is arranged at the bottom of the inner tube. An inner tube suction hole is formed in one side of the inner tube water bag, and a Murphy hole is formed in the position, located below the inner tube water bag, of the bottom of the inner tube. The problems that in an upper gastrointestinal endoscopic surgery in the prior art, the exposed part of the tracheal catheter affects surgical operation, the cuff of the tracheal catheter compresses a surgical site or affects taking out of a specimen, the tracheal catheter rubs with an endoscope and is prone to disengagement to damage tracheal mucosa, and blood and secretions in the trachea are not sucked thoroughly are solved.

The utility model provides a parallel suction filtration device and system, and the parallel suction filtration device comprises a liquid storage cavity which is used for storing liquid to be filtered, the bottom of the liquid storage cavity is provided with an opening, and the opening is provided with an embedded structure; the funnel comprises a funnel body, a plane used for placing filter paper is arranged above the funnel body, a connecting piece matched with the embedded structure is arranged in the circumferential direction of the plane, and the filter paper is fixedly connected with the connecting piece through the embedded structure; a filter pipe is connected below the funnel body; the liquid collection bottle comprises a bottle body and a bottle cap which are detachably connected in a sealed mode, the bottle cap is connected with the filter pipe, and at least two air pipes are further arranged on the bottle cap and used for communicating the interior and the exterior of the bottle body; the air pipes of different liquid collecting bottles are connected through a connecting pipe, so that air path communication is achieved between the liquid collecting bottles, and the connecting pipe is further connected with a vacuum pump. The parallel rapid filtering device is suitable for parallel rapid filtering of various samples.

The application provides a guide and breathing system for a bronchofibroscope, which comprises a cover body used for covering a throat and forming a closed cover cavity communicating with a trachea in use, and a pipeline structure fixedly connected with the cover body and comprising an endoscope pipeline and a ventilation pipeline which are independent of each other and communicate with the cover cavity, and a drainage pipeline arranged to pass through the inside of the cover body but not communicate with the cover cavity, so as to communicate with an esophagus through a drainage outlet on the cover body in use. When the guide and breathing system is used, the reflux of secretions of a patient during an endoscope operation can be disposed through the independent drainage pipeline, and the bronchofibroscope only occupies part of the space in the laryngeal mask channel in the case of the endoscope operation, so that the patient can inhale sufficient oxygen, and the safety of the patient during the operation of the bronchofibroscope is ensured.

The invention relates to the field of medical equipment, in particular to a visual double-cavity laryngoscope and thyrocricocentesis integrated device for difficult airways, which comprises a double-cavity laryngoscope main body and a thyrocricocentesis device, the outer surface of the double-cavity laryngoscope main body is fixedly connected with a connecting plate, the other surface of the connecting plate is fixedly connected with a hemispherical shell, and the hemispherical shell is fixedly connected with the double-cavity laryngoscope main body. The integrated structural design is adopted, the core functions of a visual double-cavity laryngoscope and a cricothyroid membrane puncture instrument are organically integrated, the current situation that the two traditional instruments are independently used and need to be frequently switched is thoroughly changed, an operator can sequentially complete glottis exposure and tracheal intubation operation on the same device, and if intubation fails or a patient suffers from emergency oxygen deficit, the visual double-cavity laryngoscope and the cricothyroid membrane puncture instrument can be directly used. The cricothyroid membrane puncture device which is assembled in place can be directly used for implementing puncture without additionally replacing instruments, so that the operation continuity is greatly improved, the key time for establishing an airway is effectively shortened, and the oxygen deficit risk of a patient caused by instrument switching is fundamentally reduced.

This invention relates to the field of neonatal care technology, and more particularly to a neonatal endotracheal tube fixation device, comprising a base, two head limiting plates slidably fitted on the base, a retraction mechanism rotatably connected inside the base, an adjusting seat rotatably connected to the retraction mechanism, a top frame rotatably connected to the adjusting seat, an adjusting plate below the top frame, a buffer plate fixedly connected to one end of the adjusting plate, and an endotracheal tube fixation mechanism on one side of the buffer plate. By using a base with a mattress pressure plate, the mattress is used to fix the mattress pressure plate, so that when fixing the neonatal endotracheal tube, the endotracheal tube fixation mechanism is suspended above the neonatal head without contacting the neonatal head for fixation. This avoids the pressure problems caused by neck straps or head fixation, not only improving care efficiency but also ensuring the safety and comfort of the newborn, and contributing to the healthy development of the newborn.

An intubation assembly operable as both a tracheal tube and a suction catheter. The intubation assembly may include an adapter operable to couple to a suction hose, and the adapter may be removably coupled to the tracheal tube.

The utility model discloses a kind of respiratory circuit and tracheal intubation connection fixer, including connection main part, the upper surface side of connection main part is fixedly provided with fixed plate one, the surface of fixed plate one is movably provided with fixed clamp, the bottom end of one side of fixed clamp is provided with fixed base plate, the surface of fixed base plate is provided with lower clamping block, fixed clamp is opened in the surface of fixed base plate side with sliding slot, the inside of sliding slot is movably provided with sliding block, the surface of sliding block is fixedly provided with upper clamping block, the surface of upper clamping block is threadedly connected with adjusting bolt, when facing different specifications pipeline clamping, adjusting bolt can be rotated cooperation sliding slot and sliding block to make upper clamping block adjust in the inside of sliding slot, cooperation lower fixed base plate and lower clamping block can be clamped Work, while the setting of sliding slot can play the role of limit sliding. The utility model has the characteristics of strong practicability and clamping different size pipelines according to actual use.

The utility model relates to medical instrument technical field, concretely is tracheal stent that can be absorbed and contains drug coating, including the casing of cylindrical cylinder shape, the casing includes longitudinal skeleton, ring skeleton, the drug groove of outward expansion and assembly groove, the drug coating strip is filled in the drug groove of outward expansion, the outside of casing is pasted with the film, the film includes the shrinkage film, contact touch and closed film, the utility model discloses through the degradation of closed film in patient trachea first, releases the stress on the corresponding casing at the drug groove of outward expansion, makes the drug groove of outward expansion, and the outer diameter of whole tracheal stent expands along with it, and drives drug coating strip synchronous expansion and presses outward and expands the patient place, realizes that the stent can be in the patient's body self -degradation, and the expansion force of stent can be slowly released in the process of degradation, thereby offset the stent wall thinning after degradation or the trachea natural growth leads to the stent expansion force reduction, dynamically maintained the expansion force of stent, increased the stability of stent.

The utility model relates to the field of pipe plugging devices, in particular to a pipe plugging device of a metal trachea cannula, which comprises a metal trachea cannula body. The pipe blocking mechanism comprises a cylinder, a sealing mounting mechanism is arranged on the cylinder, the cylinder is mounted on the metal tracheal cannula body through the sealing mounting mechanism, a first semicircular plate is fixedly connected into the cylinder, an incomplete circular ring sliding groove is formed in the middle of the cylinder, and a second semicircular plate is fixedly connected into the incomplete circular ring sliding groove. And a blocking plate is rotationally connected to the incomplete annular sliding groove in a limiting mode, the blocking plate is matched with the first semicircular plate to completely block the cylinder, and when the blocking plate rotates, one side of the first semicircular plate is exposed, so that the cylinder is in a semi-blocked state. The arranged device can be conveniently and stably installed on the metal trachea cannula body in a sealed mode; the plugging mechanism can fully plug the metal trachea cannula and can also be adjusted to be a semi-plugging metal trachea cannula.

The utility model relates to the technical field of medical instruments, and discloses an oxygen inhalation tube fixing mechanism for trachea surgery, which comprises a main body component, a fixing component and a fixing component, the main body component comprises a throat inlet tube and an oxygen supply tube, the oxygen supply tube is arranged at one end of the throat inlet tube, one end of the throat inlet tube is inserted into the trachea of a patient, and the other end of the oxygen supply tube is connected with oxygen supply equipment; the device is arranged on one side of the throat inlet pipe and comprises a clamping piece, the clamping piece comprises a cross-under ring, and two attaching blades are fixed to one side of the cross-under ring. By arranging the fixing assembly and using clamping and threaded connection modes, pressure cannot be caused to a laryngeal fistulization opening of a patient, unnecessary damage to the neck of the patient due to pressing and inserting errors between the throat inlet pipe and the oxygen supply pipe is avoided, and pain and discomfort of the patient are relieved.

The utility model relates to a fixing device for a tracheal catheter, the tracheal catheter is sleeved with the fixing device for fixing the tracheal catheter, the fixing device can freely slide on the tracheal catheter, slide ways which are obliquely arranged are evenly distributed on a sliding sleeve, the slide ways penetrate through the sliding sleeve, and the slide ways point to the tracheal catheter. A fixing rod for fixing the sliding sleeve through sliding is installed on the sliding way, the fixator can freely slide on the tracheal catheter, and the position of the fixator on the tracheal catheter can be conveniently adjusted; the fixing rod can freely slide on the sliding groove, when force is applied to the driving ring, the driving ring can drive the fixing rod to slide on the sliding groove and slide in the sliding way at the same time, fixing of the sliding sleeve is achieved, and the end, close to the tracheal catheter, of the fixing rod is spherical so that the tracheal catheter can be prevented from being damaged. And when the driving sleeve is rotated, the driving sleeve can drive the driving ring to move through threaded fit with the driving ring, so that the fixing rod moves, the function of fixing the sliding sleeve is achieved, and the fixing operation of the sliding sleeve can be more convenient through the driving sleeve.

The utility model relates to the technical field of abrasive material production and processing, and discloses a crusher structure and a jet mill, which comprise a crushing chamber and an auxiliary structure, the crushing chamber is in the shape of a hollow cylinder, the side wall surface of the crushing chamber is fixedly connected with an air pipe, the air pipe is in the shape of a circular tube, and the auxiliary structure is arranged in the cavity of the crushing chamber and used for guiding materials. The auxiliary structure comprises multiple air entraining plates, multiple material entraining plates and multiple flow guide blocks, the air entraining plates are detachably installed in a cavity of the crushing chamber, the material entraining plates are also detachably connected in the cavity of the crushing chamber, the flow guide blocks are fixedly connected to the wall faces of the material entraining plates, and the multiple air entraining plates and the multiple material entraining plates are arranged in the cavity of the crushing chamber in an annular array mode; the auxiliary structure accelerates the grinding efficiency of the materials by guiding the materials to be directly mixed with the high-speed air flow, so that the time required for grinding is effectively shortened, and the scheme has higher working efficiency compared with the prior art.

An airway device includes an outertube and a scope channel partially enclosed by the outertube. An intraluminal space in the outertube, not occupied by the scope channel, provides a passageway for air flow to the patient. An esophageal cuff is disposed distally on the scope channel. When inflated, the esophageal cuff secures the airway device in the proximal esophagus of the patient and helps to prevent gastric reflux by mechanically blocking gastric content from entering into the larynx. An inflatable bladder is attached at an anterior surface of the scope channel between the esophageal cuff and a distal opening of the outertube. When inflated, the bladder forms a tubular ring that pushes against the epiglottis and / or other soft tissue towards a wall of the hypopharynx to produce an unhindered air passage into the patient's trachea.

The present disclosure relates to a laryngoscope blade modification for endotracheal intubation. The disclosure provides a flexible channel attached to the laryngoscope blade or a rigid channel that opens via a spring system. The channel further incudes a slit along the entire portion of the channel, enabling a guidewire to be loaded into the channel and advanced to a patient's vocal cords and trachea before being dislodged or removed in a quick, efficient manner. An endotracheal tube is then slided over the guidewire into the vocal cords and trachea. Once endotracheal tube is inserted, guidewire is removed and intubation initiated. The present disclosure enables a faster insertion of a guidewire into the vocal cords over conventional methods without wasting precious seconds. By using a guidewire with a soft tip, the incidence of vocal cord injury decreases substantially and intubation performed successfully in a quick manner.

The utility model relates to the technical field of medical instruments, in particular to a laryngoscope which comprises a handle, a tongue pressing piece connected to one end of the handle and a display device connected to the other end of the handle, the tongue pressing piece is provided with a first installation cavity, and a camera, a first laser emitting head and a second laser emitting head are arranged in the first installation cavity. The first laser emission head and the second laser emission head are respectively used for emitting a first laser beam and a second laser beam which are arranged in parallel at an interval to the glottis of a human body, and the shooting direction of the camera is parallel to the first laser beam and the second laser beam; the first laser beam and the second laser beam irradiate the glottis of a patient to form two light spots with the fixed distance, the first laser beam, the second laser beam and the two light spots and the light beam can be displayed in a display picture of the display device, and the two light spots, the first laser beam and the second laser beam can provide references for doctors. A doctor can conveniently judge the glottis size of a patient, and then the doctor can conveniently determine the specification of the tracheal catheter.

The utility model provides an air pipe extrusion air trapping prevention structure which comprises an air pipe body, the air pipe body is of a tubular structure, an airflow channel is formed in the air pipe body, the air pipe body is made of flexible materials, a supporting assembly is arranged in the air pipe body and comprises at least one polyhedral rib, and a flow guide groove or a flow guide hole is formed in the surface of the polyhedral rib. The air pipe body is provided with a plurality of polyhedral ribs, the polyhedral ribs are used for enhancing passing of air flow, the polyhedral ribs are made of plastic, and the polyhedral ribs are used for supporting the inner wall of the air pipe body when the air pipe body is extruded by external force or bent so as to prevent the air flow channel from being closed. The supporting assembly can well support the inner wall of the air pipe body, so that air flow can pass through, installation is convenient, and cost is reduced.