58 results about "Laryngeal tube" patented technology

The present invention relates to the field of medical devices used in the procedures of orotracheal or nasotracheal intubation. Oral or nasal endotracheal intubation procedures are commonly employed to secure a controlled airway and to deliver inhalant oxygen, anesthetic gases, and other therapeutic agents into the trachea and lungs of human and veterinary patients. Such intubation procedures carry a significant risk of dental injury resulting from contact between the laryngoscope blade used for visualization during intubation. The present invention provides an apparatus to reduce dental injury including a modified laryngoscope blade and a disposable insert which is designed to be received and retained in a single step by the modified laryngoscope blade. The disposable insert may be quickly secured by the user, and reduces both direct pressure and shear forces on the maxillary incisor teeth when the laryngoscope blade is placed in a patient's mouth during intubation.

The present invention relates to the field of medical devices used in the procedures of orotracheal or nasotracheal intubation. Oral or nasal endotracheal intubation procedures are commonly employed to secure a controlled airway and to deliver inhalant oxygen, anesthetic gases, and other therapeutic agents into the trachea and lungs of human and veterinary patients. Such intubation procedures carry a significant risk of dental injury resulting from contact between the laryngoscope blade used for visualization during intubation. The present invention provides an apparatus to reduce dental injury including a modified laryngoscope blade and a disposable insert which is designed to be received and retained in a single step by the modified laryngoscope blade. The disposable insert may be quickly secured by the user, and reduces both direct pressure and shear forces on the maxillary incisor teeth when the laryngoscope blade is placed in a patient's mouth during intubation.

The invention belongs to the field of medicines, and particularly discloses a ventilation apparatus for general anesthesia. A tracheal catheter comprises a tracheal inner layer and a tracheal bladder arranged outside the tracheal inner layer. A control unit comprises a rotary sleeve which is in rotary connection with a laryngeal mask catheter, guide slots are formed in the outer side of the rotary sleeve, and the top of the rotary sleeve is connected with a bolt. A sliding cavity and an air supply assembly are arranged in the rotary sleeve; the air supply assembly is used for supplying and feeding air for the tracheal bladder; a slider is in sliding connection in the sliding cavity; a connecting rod penetrates the inside of the slider and is provided with a stop plate; one end of the connecting rod runs through a third communicating port and is connected with the tracheal inner layer; the other end of the connecting rod is connected with an indicating ball which is in sliding connection in the guide slots. A cam mechanism is also arranged in the slider and abutted against the tracheal catheter. According to the technical scheme, hurt to the patient's body caused by rubbing generated in the process of inserting the laryngeal mask catheter and the tracheal catheter can be reduced, insertion of the tracheal catheter is facilitated, the state of the tracheal catheter can be switched conveniently, and thus, work efficiency of medical staff is improved.

The invention relates to a medical laryngeal mask, which effectively solves the problems that the existing laryngeal mask cannot stably realize the connection between a connecting joint and a throat and cannot clean water drops in the connecting joint. The technical scheme includes that a positioning device is arranged in the throat and a quick unlocking device is arranged on the connecting joint, and thus the connection between the throat and the connecting joint of the medical laryngeal mask is simple and convenient, and the mounting and dismounting between the connecting joint and the throat can be realized more quickly, so that time for the operation is saved; and furthermore, a water drop cleaning device is arranged in the connecting joint, and thus water drops adhered to the inner wall of the connecting joint in the outside air due to cold are discharged out of the connecting joint, so that the situation that water drops gather more and flow back into the trachea of a patient is avoided, and the safety and reliability of the medical laryngeal mask are greatly improved.

The invention discloses a venturi tube with an adjustable throat channel for a current limiting test. The venturi tube comprises a fluid pipe, annular groove is formed in inner wall, a lantern ring matched with the annular groove is embedded in the annular groove, a cavity ring is clamped between the annular groove and the lantern ring, and the section size of the cavity ring is larger than that of the annular groove. A first radial through hole and a second radial through hole which correspond to each other in position are formed in the pipe wall of the fluid pipe, the ring wall of the lantern ring and the ring wall of the cavity ring; the first radial through hole only penetrates through the ring wall on one side of the cavity ring; the second radial through hole penetrates through the ring walls on the two sides of the cavity ring; a first sleeve and a second sleeve are arranged in the first radial through hole and the second radial through hole, the outer wall of the second sleeveis provided with scales or connected with a displacement sensor, the connecting end between the second sleeve and the annular wall of the cavity ring is connected in a sealed mode, and sealing plugs are arranged between the first sleeve and the pipe wall of the fluid pipe and between the second sleeve and the pipe wall of the fluid pipe. The venturi tube is simple in structure and convenient to measure, and the size of the throat tube of the venturi tube in the tube body can be conveniently adjusted at any time.

An elongate strip of adhesive tape having an adhesive side and a non-adhesive side; (b) a first peel-away tab on and covering more than half the length of the adhesive tape; and (c) a second peel-away tabs on and covering less than half the length of the adhesive side of the adhesive tape so that when the first peel-away tab is peeled off the tape and the adhesive side of the central portion of the adhesive tape is wrapped around a tracheal tube or the like with the remaining portion of the adhesive side of the adhesive tape applied to the cheek or upper lip of the patient and then peeling the second peel-away tab from the adhesive tape and applying the thus exposed adhesive side of the adhesive tape to the other cheek or upper lip of the patient thereby securing the tube or airway to the patient. In addition, an improved kit of components for securing a tracheal tube, an adjunct tube, an oropharyngeal tube, a nasogastric tube, a laryngeal tube or a laryngeal mask airway to a patient to, the kit of components contained in a sealed and sterilizable pouch, wherein the kit includes the adhesive tape of the instant invention. Additional components of the kit may include eye tapes and tape for securing nasogastric tubes or the like to the patient.

The invention relates to an in-throat emetic head and an emetic device with the emetic head for emergency internal medicine. The in-throat emetic head comprises an in-throat pipe and a stimulation contact assembly, the in-throat pipe comprises an inner pipe and an outer pipe, and the stimulation contact assembly comprises a rotating shaft and a contact; and the contact comprises a blade and a stimulation part arranged on the outer edge of the blade, and the emetic device comprises an in-vitro terminal, a negative pressure generation source, a vomit collection bottle and the in-throat emetic head. The emetic head is provided with a rotary stimulation contact which can be driven by negative-pressure airflow, the blade of the stimulation contact is driven to rotate under the action of the negative-pressure airflow, and the stimulation part is driven to perform contact stimulation on tonsil of a patient in the rotating process of the blade, so that the patient is induced to vomit, on one hand, the negative-pressure airflow plays a role in driving the stimulation contact to act, on the other hand, vomit of a patient can further be sucked away in time, and discomfort of the patient due to the fact that the vomit cannot be discharged in time is prevented.

The invention discloses a multi-channel pharynx oralis air breather for an anesthesiology department. The multi-channel pharynx oralis air breather for the anesthesiology department comprises a fixingcover. A through hole is installed in the middle of the fixing cover. A plug body is cooperatively installed in the through hole of the surface of the fixing cover. The surface of the plug body is successively provided with a trachea channel, a throat pipe channel and a breather valve channel. The interiors of the trachea channel, the throat pipe channel and the breather valve channel are successively provided with a trachea, a throat pipe and a breather valve. The trachea is cooperatively installed with the trachea channel through a trachea fixing sleeve. The throat pipe is cooperatively installed with the throat pipe channel through a throat pipe fixing sleeve. The lower end of the interior of the plug body is fixedly provided with a tongue depressor. The bottom of the tongue depressoris provided with a temperature sensor. The multi-channel pharynx oralis air breather for the anesthesiology department is capable of providing the trachea channel and the throat pipe channel, automatically measuring a temperature of an oral cavity, providing a force acting point for teeth of a user, and avoiding facial muscle stiffness.

The invention discloses a Venturi tube with a variable throat tube section size. The venturi tube comprises a rigid outer tube, a first-layer tubular cavity and a second-layer tubular cavity are formed in the rigid outer tube, a first-layer tubular spacer bush is arranged between the first-layer tubular cavity and the second-layer tubular cavity, a second-layer tubular spacer bush is arranged on the outer ring side of the second-layer tubular cavity, the first-layer tubular spacer bush and the second-layer tubular spacer bush are each divided into an elastic middle section and two rigid side sections which are connected with each other, the first-layer tubular cavity is filled with a magnetofluid liquid, the second-layer tubular cavity is filled with an electrorheological fluid, and two isolated conductive layers are attached to the two sides of the inner surface of the second layer tubular cavity. And conductive layers are connected with electrodes, a plurality of sets of electromagnetic coils are further arranged outside a rigid outer pipe, and the multiple sets of electromagnetic coils and the wires are connected with a controller. The Venturi tube has the characteristics that the section size of the throat tube of the venturi tube in the tube body can be adjusted at any time for flow limiting according to the actual flow limiting requirement of the throat tube part of the venturi tube, and so on.

An electronic larynx air sounding auxiliary system belongs to the technical field of medical treatment and comprises a micro-air sensor, an A / D conversion module, a PWM generation module, a controllable electronic air pump, a reed artificial throat and a conduit, wherein the micro-air sensor is arranged in a pre-throat laryngocarcinoma post-surgery incision part to measure flow speed and flow amount parameters of air in a laryngeal tube to achieve a simulation signal; the A / D conversion module can convert the simulation signal into a digital signal representing air flow speed and flow amount; the digital signal is generated into a pulse width PWM wave; the PWM wave can control rotating speed of the controllable electronic air pump, so an air flow having the same flow speed and same flow amount as the air in the laryngeal tube can be produced; and the air flow enters the conduits and then an oral cavity and a sound can be made. The electronic larynx air sounding auxiliary system requires low cost and has great durableness, causes no secondary infections to patients and is suitable for carious pre-throat laryngocarcinoma post-surgery patients.

The invention discloses a Venturi mixer, which comprises a constriction section, a throat and an expansion section. An annular plate is arranged at each end, and at least one inlet pipe is arranged on the outer pipe; a deflector is arranged in the inner pipe, and the deflector includes a mandrel, and the outer wall of the mandrel is equiangular along the circumferential direction. N pieces of fins are arranged on the ground; N rows of through holes are opened equiangularly along the circumferential direction on the tube wall of the inner tube, and each row of through holes points to between two adjacent fins; said N is greater than or equal to 3 an integer of . The Venturi mixer provided by the present invention realizes that the first fluid is evenly distributed into N strands after reaching the inner tube; and the second fluid enters the inner tube through the through hole of the inner tube and is correspondingly divided into N rows, so that the two Homogeneous mixing is achieved as soon as the fluids are brought together in the inner tube.

The invention discloses an upper layer high-pressure negative-pressure separated exploiting device. The upper layer high-pressure negative-pressure separated exploiting device comprises a main body, a valve seat, a ball valve, a throat pipe and a pressing cap, wherein a first eccentric through hole and a second eccentric through hole are formed in the top surface of the main body, a central through hole is formed in the bottom surface of the main body, and the first eccentric through hole and the second eccentric through hole communicate with the central through hole; the valve seat and the ball vale are arranged at the end of the top end of the first eccentric through hole and the communicating part between the first eccentric through hole and the central through hole correspondingly, a communicating hole formed in the portion between the first eccentric through hole and the second eccentric through hole is formed above the ball valve; the throat pipe is installed at the bottom of the second eccentric through hole in an inserted mode, the inner diameter of the bottom end of the throat pipe is increased, and the bottom end of the throat pipe is provided with a spraying nozzle, and thus a central hole channel of the throat pipe, the second eccentric trough hole and a central hole channel are connected sequentially; the pressing cap is arranged on the inner wall of the lower side of the main body, a third eccentric through hole and a fourth eccentric through hole are formed in the top surface of the pressing cap, and the fourth eccentric through hole communicates with an overflowing hole which is formed in the side wall of the lower side of the main body. According to the upper layer high-pressure negative-pressure separated exploiting device, the through capability of fluid in the low pressure area is maximally improved, the application range of interlayer pressure differences of tools is enlarged, and the exploiting efficiency is greatly improved.

The invention discloses an end-expiratory CO2 guided tracheal intubation apparatus. The apparatus comprises: an intubation pipe, an end-expiratory CO2 guide pipe, a liquid suction pipe, an air bag andan air-changing air pipe, wherein the end-expiratory CO2 guide pipe is arranged in the side wall of the intubation pipe in a partial penetrating manner, one end of the end-expiratory CO2 guide pipe extends beyond the terminal end of the intubation pipe, the other end of the end-expiratory CO2 guide pipe is connected with an end-expiratory CO2 sensor, the liquid suction pipe is arranged in the side wall of the intubation pipe in a partial penetrating manner, one end of the liquid suction pipe extends beyond the terminal end of the intubation pipe, the other end of the liquid suction pipe is connected with an air pump, the air bag sleeves the outer wall of the intubation pipe, the air-changing air pipe is arranged in the side wall of the intubation pipe, one end of the air-changing air pipeenters the inside of the air bag, and the other end of the air-changing air pipe is connected with an air supply apparatus. According to the apparatus, the tracheal intubation position is quickly andaccurately determined by detecting the end-expiratory CO2 data of an exhaled gas of the patient's throat through the end-expiratory CO2 guide pipe arranged in the intubation pipe wall, and cooperating with an endoscope. In addition, the effusion in the throat and trachea of a patient is drawn out through the liquid suction pipe, and thereby the observation of the medical personnel with the endoscope is facilitated.

The invention belongs to the technical field of pneumology department equipment, and provides an oxygen heating and humidifying device for pneumology department nursing, which comprises a humidifying box and a mixing mechanism mounted on the humidifying box, and the humidifying box is connected with a gas path system; the mixing mechanism comprises a venturi tube, one end of the venturi tube is rotationally connected with an air inlet pipe, the air inlet pipe is fixedly connected with the humidifying box, the other end of the venturi tube is rotationally connected with an air outlet pipe, the air outlet pipe is fixedly connected with the humidifying box, fan blades are fixedly connected to the peripheries of the two sides of the venturi tube, and a plurality of air holes are formed in the throat tube section of the venturi tube. The device is simple in structure, distilled water is mixed with oxygen in the form of water vapor so as to fulfill the aim of fully wetting the oxygen, the oxygen is heated by utilizing the heat of the water vapor, the two operations are synchronously carried out, and the humidification and heating are sufficient.

The invention relates to the technical field of medical equipment, and in particular to a nasal drug delivery device for otolaryngology head and neck surgery. The device comprises an air filter component and a powder drug delivery component, the air filter component comprises an active carbon filter screen and an antibacterial filter screen, the active carbon filter screen and the antibacterial filter screen are embedded in an air inlet pipe, the air inlet pipe is in screwed connection with a connecting pipe, the powder drug delivery component comprises a nozzle, the nozzle is in screwed connection with a contraction pipe, the contraction pipe is in screwed connection with the air inlet pipe, a sealing element is arranged between the contraction pipe and the air inlet pipe, the nozzle is provided with a powder inlet pipe, a piston is arranged in the powder inlet pipe, the nozzle is communicated with a throat pipe, the throat pipe is connected with an expansion pipe, and the outlet endof the expansion pipe is provided with a first eccentric hole. According to the present invention, an eccentric design is adopted, so that dry powder sprayed from a second eccentric hole can face theoutside of nasal cavity, the dry powder and airflow can be prevented from hitting the nasal septum, the spray can also be prevented from directly impacting the nasopharynx part to cause irritation, and the best absorption effect of the dry powder can be achieved.

The invention discloses a respiratory protection testing machine. The respiratory protection testing machine comprises a dry vacuum pump, an observation bin, a dust generating roller, a mixed jet device, a diffusion fan, a first head mold, a second head mold, a displayer and a controller. The dust generating roller, the mixed jet device, the diffusion fan, the first head mold and the second head mold are all arranged in the observation bin; the dry vacuum pump and the dust generating roller are both connected with the mixed jet device through pipes, and the diffusion fan is arranged in the emitting direction of the mixed jet device; the first head mold and the second head mold are connected with breathing simulators through throat pipes, and a mask or a protective mask is worn on the firsthead mold; the display and the respiration simulators are electrically connected with the controller. According to the invention, the field operation environment can be simulated, and a contrast experiment is carried out to fully illustrate the necessity and importance of wearing a mask or a protective mask, so the protection consciousness of personnel is improved.

A laryngeal mask airway (LMA) for gastroscopy includes a laryngeal tube for gastroscopy. A drainage tube is fixedly installed on an outer surface of an upper end of the laryngeal tube for gastroscopy. A PC connector is fixedly installed at one end of the drainage tube. A ventilation hole is formed in an outer surface of an upper end of the drainage tube, and a suction hole is formed in an outer surface of a lower end of the laryngeal tube for gastroscopy. An inner cavity and an inflation tube hole are formed inside the laryngeal tube for gastroscopy. The inflation tube hole is disposed under the inner cavity and receives an inflation tube, and a single-cavity connector is fixedly installed at one end of the inflation tube. The LMA absorbs secretions from a patient's esophagus to minimize coughing during a gastroscopy, thereby reducing patient discomfort and pain.

The invention discloses a respiratory tract cleaning and sputum excretion device for the pediatric department, which comprises a sputum suction machine; a first sputum guide pipe is fixed to the input end of the sputum suction machine, a socketed pipe is fixed to the other end of the first sputum guide pipe, and a second sputum guide pipe is inserted into an inner cavity of the socketed pipe in a sleeved mode. According to the invention, a first outer pipe and a second pipe tubes can be inserted into the throat pipe from the oral cavity in advance, meanwhile, a torsional spring enables the pressing plate to extrude the second outer pipe to keep the downward radian all the time, the second sputum guide pipe penetrates through the outer pipe to conduct sputum suction operation, the second sputum guide pipe can be prevented from making contact with the tonsil, so that a child does not feel uncomfortable to cause counteracting actions, meanwhile, a protective rubber film is shielded between the outer pipe, the inner cavity of the child is prevented from being pinched when the outer pipe move, the two supporting plates can open the oral cavity of the child by rotating an outer rod, medical staff can rotate or pull the sputum suction pipe easily, the sputum suction operation is easier, a mounting plate can block the stop block, the outer pipe pre-arranged in the oral cavity is prevented from sliding into the throat pipe of the child, and the use safety of the device is improved.

The invention provides an atomization device, which relates to the technical field of atomization, comprising a liquid reservoir, an atomizer and a mist outlet, the liquid reservoir communicates with the atomizer, and the liquid reservoir is suitable for supplying liquid to the atomizer. The atomizer is suitable for converting the liquid provided by the liquid reservoir into mist. The mist outlet includes an air inlet pipe, a throat pipe and an air outlet pipe. The two ends of the throat pipe are respectively connected with the air inlet pipe and the air outlet pipe, and the air flows through The air inlet pipe, the throat pipe and the air outlet pipe, the cross-sectional area of ​​the throat pipe is smaller than the cross-sectional area of ​​the air inlet pipe, the cross-sectional area of ​​the throat pipe is smaller than the cross-sectional area of ​​the air outlet pipe, and the side wall of the throat pipe A mist inlet hole is provided through which the atomizer communicates with the mist outlet, and the mist outlet is suitable for discharging the mist transformed by the atomizer. The atomization device provided by the present invention does not need to arrange tap water pipes, and at the same time has relatively low requirements on the water pressure of the water source, and is suitable for various working environments.

The invention discloses a throat tube-type airflow drafting device for preparing a high-thermal-insulation and flame-retardant material with a velvet-like structure. The device comprises an upper sleeve, the bottom end of the upper sleeve is connected with a lower sleeve through threads, a lower plug is arranged in the bottom of the upper sleeve, a central tube is arranged in the upper sleeve, thebottom end of the central tube is fixed in the lower plug through a fixing cap, the upper end of the upper sleeve is connected with a drafting cap through threads, a gasket is arranged between the drafting cap and the upper sleeve, the lower end of the drafting cap is composed of an arc-shaped structure and a straight tube structure, the upper end of the central tube is of a trumpet-shaped structure with an upward opening, the straight tube structure and the partial arc-shaped structure are inserted into the central tube, a gap area is formed at the lower end of the drafting cap and the upperend of the central tube, and the inner diameter of the straight tube structure is one third of the inner diameter of the lower end of the trumpet-shaped structure. The drafting device overcomes the defects of the prior art, the size of the gap area of the drafting device is adjustable, airflow enters the central tube from the gap area, and the influence of vortex on tows is eliminated through three-time transition.

The respiratory tract cleaning and sputum excretion device comprises a fixing box, a holding sleeve mechanism is installed on the fixing box, a fixing plate is fixedly installed in the fixing box, a lower partition plate and an upper partition plate are fixedly installed between the fixing plate and the fixing box, and an air suction plate is installed between the upper partition plate and the lower partition plate through a sliding mechanism. An air blowing mechanism is installed between the air suction plate and the fixing box, a fixing pipe is fixedly installed on the fixing box, a semi-permeable membrane and an inclined filter plate are fixedly installed in the fixing pipe, a sputum excretion mechanism is installed between the fixing pipe and the lower partition plate, and a blocking mechanism is installed in the fixing pipe. The sputum suction device has the advantages that placement of the deep throat pipe and sputum suction can be rapidly and accurately completed, the sucked sputum can be cleaned and dissolved, secondary sputum suction operation cannot be affected by the sputum, air and the sputum can be prevented from flowing back into the respiratory tract of a child, secondary pollution can be avoided, and safety is high.

The invention relates to a tracheal intubation tube capable of soothing laryngeal anesthesia, comprising a through tube, a balloon tube, a combined sleeve, a controller, an anesthesia device and an anesthesia tube, and the peripheral outer wall of the through tube is inserted into the combined sleeve , the bottom of the combination sleeve is fixedly connected to the controller by screws, the front side wall of the combination sleeve is provided with a sleeve hole, and the left and right side walls of the combination sleeve are integrally formed and connected to the limiting plate. Endotracheal intubation for relieving laryngeal anesthesia, a combination sleeve can be sleeved on the cannula, and the bottom of the combination sleeve is combined with a controller. The pipe fittings are connected to the anesthesia device. There are multiple anesthesia tubes combined on the anesthesia device. After fixing, the input end is connected to the pump body. It can cooperate with the atomizer head to atomize the passed anesthesia liquid and spray it on the throat to achieve surface anesthesia. Effect, the present invention makes the patient safe and comfortable.

The invention relates to a medical laryngeal mask. The invention effectively solves the problem that the existing laryngeal mask cannot realize the connection between the connecting joint and the throat pipe more stably and cannot clean the water droplets in the connecting joint; the technical solution includes: A positioning device is provided in the tube and a quick unlocking device is provided on the connecting joint, so that the connection between the throat of the medical laryngeal mask and the connecting joint is simple and convenient, and the installation and disassembly of the connecting joint and the throat can be realized relatively quickly. It saves time for the operation. Furthermore, by installing a water drop cleaning device in the connection joint, the water droplets that adhere to the inner wall of the connection joint placed in the outside air due to cold are discharged from the connection joint, avoiding the accumulation of water droplets. The occurrence of reflux into the patient's trachea greatly improves the safety and reliability of the medical laryngeal mask.

The invention provides an air water collecting device and method. The air water collecting device comprises an air channel and a water collecting core arranged in an inner cavity of the air channel, wherein the air channel is divided into a reducing pipe, a drum-shaped pipe and an increasing pipe, two sections of throat pipes are formed at the reducing positions of the two ends, the water collecting core comprises a fixing shaft and a plurality of water collecting panels, the fixing shaft is arranged in the center of the air channel, and the plurality of water collecting panels are arranged along the fixing shaft up and down at intervals. According to the air water collecting device and method, the flowing of the inlet air flow is more controllable, and the concentration degree on the water collecting working surface is higher. Agglutination of water mist in the air is further accelerated through the bionic surface of the water collecting surface, and the air water collecting efficiency is improved.

A patient ventilation interface has a throat body defining a venturi throat that is open to ambient air, a nasal pillow disposed around the venturi throat to define a plenum between the venturi throat and the nasal pillow, a jet nozzle arranged to output ventilation gas into the venturi throat, and a pressure sensing tube having a pressure sensing port positioned to be in fluid communication with the plenum. The nasal pillow may be an integral part of the throat body. An expected error in the sensed patient airway pressure Psense may be corrected by applying a correction factor Pdelta indexed by the sensed patient airway pressure Psense and a jet nozzle flow V′n of the jet nozzle. Delivery of the ventilation gas output by the jet nozzle may be controlled in response to the corrected patient airway pressure.

The invention discloses a Venturi tube cavitation strengthening device for mineral flotation, and relates to the technical field of hydrodynamic cavitation, the input ends of an arc-shaped throat pipe and a throat pipe section are communicated with the output end of an inlet pipe, and the output end of the throat pipe section is connected with an expansion section; the expansion section is a diverging pipe, and a bluff body is arranged in the expansion section through a fixing rod; the arc-shaped throat pipe is communicated with an annular pipe, and a flow dividing throat pipe is arranged at the output end of the annular pipe. And the output end of the shunting throat pipe is arranged in the expansion section and is arranged above the bluff body. By arranging the arc-shaped throat pipe and the annular pipe, when water flow enters, the water flow is shunted through the multiple shunting throat pipes, cavitation discharge is conducted in the annular pipe, the water flow normally passing through the Venturi pipe is shunted again through the bluff body to be subjected to cavitation, and therefore the multiple-cavitation effect is achieved; the problem that cavitation is not thorough due to the fact that only a single cavitation path exists in a traditional venturi tube is solved, and the venturi tube has the advantage that cavitation efficiency is enhanced by multiple times of cavitation in a limited space.

The invention discloses an anti-falling stomach tube device for digestive department nursing. The anti-falling stomach tube device comprises a mask, a breathing hole, side plates, hanging lugs, an elastic band, a suction tube, a clamping groove, a front cover, a hinged tube, a buckle, a hinge, a guide block, a guide tube, a nasal tube port, a throat tube port, a first threaded tube, a mouth supporting rod, a clamping device, a through tube hole and the like. The stomach tube fixing device is reasonable and simple in structure, low in production cost, convenient to install and complete in function, comfortable experience feeling can be brought to a patient by reasonably wearing the stomach tube fixing device on the face of the patient through the arranged mask and the elastic band, and the stomach tube is fixed through the arranged clamping device, the used locking bolt, the anti-skid pad and the anti-skid tube table; and the arranged locking bolts can be stably fixed, so that the workload of medical staff is reduced.

The invention discloses a mercury inertia triggering device of an automobile safety air bag, which comprises an inverted gyroscope-shaped mercury inertia triggering container, and the top end of the mercury inertia triggering container is coaxially and integrally connected with a vertical spring tube through a throat tube; a mercury filling cavity is formed in the mercury inertia triggering container, a columnar spring bin is arranged in the spring tube, a vertical throat tube channel with a thin middle part and thick upper and lower ends is arranged in the throat tube, and the lower end of the spring tube is communicated with the upper end of the mercury filling cavity through the throat tube channel; the mercury filling cavity is filled with mercury, and the liquid level of the mercury is just located at the middle height position of the throat pipe channel. The violent collision in any direction can be recognized through one mechanism, and the mechanism is more comprehensive than a single-direction collision mechanism in the prior art.

The invention provides a multifunctional tracheal catheter for the anesthesiology department, and relates to the technical field of medical instruments, the multifunctional tracheal catheter comprises a tracheal catheter body, an air bag is arranged on the outer surface of one end of the tracheal catheter body, an air bag breather pipe is connected to the interior of the air bag, and a first air inlet is formed in one end of the air bag breather pipe; the tracheal catheter comprises a tracheal catheter body, a first air inlet is formed in the tracheal catheter body, an anti-closing mechanism is arranged on the outer surface of the tracheal catheter body and the outer surface of the first air inlet in a sleeving mode, the anti-closing mechanism comprises a connecting column, and the connecting column is fixedly installed on the outer surface of the tracheal catheter body. And then the gas is input into the oval air bag through the breather pipe, so that the oval air bag is bulged, the oral cavity is bounced off, unconsciousness, mouth closing and tracheal catheter biting caused by anesthetic gas of a patient are effectively prevented, and unsmooth use of the tracheal catheter body is effectively prevented.

The invention belongs to the technical field of laryngoscopes, particularly relates to a ventilation type laryngoscope for otorhinolaryngology department examination and use method of ventilation type laryngoscope, and provides the following scheme for solving the problem of laryngoscope examination: the ventilation type laryngoscope for examination in the otolaryngology department comprises a lens main body, a touch screen and a fixed seat, wherein the ejector block is additionally arranged on the side wall of the laryngoscope blade, the vent hole is formed in the side wall of the ejector block, and the second spring is additionally arranged on the side wall of the laryngoscope blade and connected with the ejector block, so that the ejector block can be ejected forwards; the ejector block is ejected forwards during laryngoscope examination, then the vent hole can be communicated with the two side walls of the laryngoscope blade, and ventilation can be conveniently carried out on the inside of the throat of a patient; thus, the suffocation feeling brought to a patient when the throat pipe is inserted is reduced, and the discomfort of the patient is reduced; when the pull rope is pulled, the top block can be pulled towards the inner side, so that the position of the vent hole moves to the inner side of the laryngoscope blade, and the ventilation process is cut off; in addition, the end face of the laryngoscope blade is kept flat, and the laryngoscope blade can be conveniently pulled out after operation is completed.