161 results about "Air leak" patented technology

The invention relates to the technical field of medical care informatics, and discloses a laryngeal mask ventilation control method suitable for outpatient anesthesia, which comprises the following steps: before core analysis, injecting and monitoring a high-frequency signal to confirm the integrity of an original breathing waveform data stream; constructing a real-time ventilation waveform trajectory in a differential phase space only on the premise that a data stream is complete, and performing morphological comparison with an individualized baseline template; meanwhile, when a parameter adjustment event of the respirator is monitored, the baseline template is automatically re-calibrated, a collaborative analysis framework with front information source quality inspection and dynamic reference self-adaption capabilities is constructed, ventilation monitoring is converted from passive response to an isolated peak point into active insight to a system dynamics evolution trajectory, and the system dynamics evolution trajectory is optimized. Therefore, the risk of gradual deterioration of the ventilation state caused by tiny air leakage of the laryngeal mask or secretion accumulation can be clinically recognized in an early stage, and intervention time is won for anesthetists.

The invention discloses a thoracic surgery postoperative drainage monitoring data processing method and a thoracic surgery postoperative drainage monitoring data processing system. The method comprises the following steps: synchronously acquiring thoracic respiration dynamic characteristics of a patient and fluid dynamic characteristics of a thoracic closed drainage system through a data acquisition module; the central processing server establishes a time sequence mapping relationship between the two, performs feature fusion analysis, and calculates to obtain a thoracic cavity-pipeline coupling efficiency index; performing logic judgment on the postoperative recovery state of the patient on the basis of the index, and identifying a chest-pipeline fluid transmission state including breathing work limitation, drainage channel blockage and pleural cavity air leakage; and dynamically generating a grading equipment response strategy including adjusting training intensity and triggering pipeline maintenance early warning or analgesia intervention according to an identification result. According to the method, accurate recognition and closed-loop management of postoperative complications are achieved by quantitatively evaluating the linkage relation between respiration driving and drainage response.

The invention relates to the technical field of respirator masks, and particularly discloses a noninvasive respirator mask auxiliary fixing device which comprises a machine body, an air delivery pipe and a mask, one end of the air delivery pipe is connected to the machine body, the air delivery pipe is used for delivering oxygen, the mask is connected to the other end of the air delivery pipe, and the mask is worn on the face of a patient to form a closed air path space. The fixing rope is connected to the mask and used for fixing the mask, the judging assembly is connected to the mask, when a patient is treated, the judging assembly is used for monitoring whether the mask is sealed or not and judging whether the gas conveying pipe is blocked or not, and in the using process, the sealing state of the mask can be monitored in real time, oxygen leakage is prevented, and the mask is prevented from leaking. The adjusting assembly is connected to the mask and connected with the fixing rope, the adjusting assembly is used for adjusting the tightness degree of the fixing rope, and when the judging assembly judges that the mask leaks air, the adjusting assembly is started and adjusts the tightness degree of the fixing rope.

The invention discloses a dynamic air pressure sensing bronchial occluder cuff air tightness detection method and device, and relates to the technical field of air tightness detection, and the method comprises the steps: carrying out the inflation test of a target bronchial occluder, carrying out the continuous monitoring of air pressure, and obtaining an air pressure monitoring data sequence; determining the overall air tightness of the final assembly to obtain an overall air tightness determination result of the final assembly; if the overall airtightness of the final assembly is abnormal, performing a dynamic inflation and deflation test on the target bronchial occluder to obtain a springback air pressure monitoring data sequence, performing time sequence iterative analysis and prototype identification on the springback air pressure monitoring data sequence, and determining a target airtightness abnormal prototype; when the abnormal type is air leakage of the cuff body, a closed pressure maintaining test is carried out, and a target cuff air tightness monitoring result is obtained. The technical problem that in the prior art, the abnormal type of the air tightness of the bronchial occluder cannot be accurately recognized in the final assembly state is solved, and the technical effect of automatically recognizing the abnormal type under the final assembly condition is achieved.

The invention discloses an intelligent chest drainage and dynamic monitoring system, which belongs to the field of surgical operations and comprises a drainage tube, a pressure monitoring module, a drainage liquid character monitoring module, a drainage quantity monitoring module, a parameter setting module, a data processing and analyzing module, a display early warning module and a remote communication module. Real-time and accurate monitoring of parameters such as pressure in the thoracic cavity, drainage amount and drainage liquid characters is achieved, postoperative bleeding, air leakage, infection and other complication risks can be found and early warned in time according to monitoring data, the structural design of the drainage tube is optimized, the flexibility and anti-blocking performance of the drainage tube are improved so that the drainage tube can adapt to different operation scenes and patient requirements, and the operation efficiency is improved. A comprehensive and scientific decision basis is provided for clinicians, so that the safety, the effectiveness and the intelligent level of chest drainage treatment are improved.

A respiratory mask can be used to provide therapy to patients who also require a nasogastric (NG) tube. The mask seal can include a path that is designed to deform around an NG tube or other without lifting the mask away from a patient's face. The deforming path can help to minimize gaps that form between the patient's face and the mask seal as a result of the tube, thus reducing leaks and improving the efficacy of the treatment.

The utility model discloses an anti-air-leakage noninvasive respirator mask which is characterized in that the anti-air-leakage noninvasive respirator mask comprises a breathing mask and a base, the base comprises a bonding layer, a deformation layer and a sealing layer, oily isolation paper is arranged at the bottom of the bonding layer, a rubber buffer layer is arranged in the middle of the deformation layer, and the sealing layer is made of silica gel. The side end of the top of the sealing layer is provided with a film, the side edge of the film is provided with a sealing strip A, the side end of the bottom of the breathing mask is also provided with a film, the side edge of the film at the bottom of the breathing mask is provided with a sealing strip B, the sealing strip A is matched with the sealing strip B, the top end of the breathing mask is provided with an elastic connecting rod, and the connecting rod is fixedly connected with the head band. The breathing mask and the base are arranged, the breathing mask and the base are connected through the sealing strip A and the sealing strip B, the sealing performance between the breathing mask and the base is guaranteed, the breathing mask can be conveniently taken down and installed, and meanwhile it can be guaranteed that the sealing performance is not changed after installation.

The utility model relates to the technical field of medical instruments, in particular to an auxiliary device for executing an LP blowing method in a TCD foaming experiment, which comprises a mouth holding nozzle, the mouth holding nozzle comprises a first shell and a second shell, close sides of the first shell and the second shell are respectively provided with a first butt joint shell and a second butt joint shell, and the first butt joint shell and the second butt joint shell are matched with each other in an inserted mode. According to the auxiliary device, the filter cotton for blocking saliva is arranged in the mouth, subsequent cleaning is facilitated, the auxiliary fixing piece is connected to the outer wall of the mouth in a sleeved mode, the ear hanging ring can be hung on the ear, the mouth is fixed to the oral cavity, inconvenience caused by manual supporting of a patient is avoided, and the auxiliary device is simple and standard in appearance, convenient to use and high in practicability. The manufacturing technology is mature, hospital diagnosis and treatment specifications are met, hospital infection quality control requirements are met, the mouth is held in the mouth according to the mechanics principle, wrapping is tight, air leakage is avoided, labor is saved, and compared with an existing device, the device has the advantages of being easy to operate, scientific, effective, clean, sanitary and clinically applicable.

The application provides a thoracic cavity data monitoring method and device, electronic equipment and a storage medium. The method sets an alternating drainage mode and a breathing mode in a thoracic cavity drainage device, and adds a breathing component. The original drainage component performs drainage in the drainage mode and suspends drainage in the breathing mode. The added breathing component performs breathing pleural pressure monitoring in the breathing mode. The application determines that the work needs to be stopped when the continuous drainage flow data, the continuous air leakage flow data and the continuous breathing pleural pressure data all meet the reference index. The determination is based on the continuous breathing pleural pressure data rather than discrete data, so that secondary drainage is not needed, that is, the application is more accurate in determining the stopping time of the thoracic cavity drainage device.

The embodiment of the invention discloses an air bag pressure control device, medical ventilation equipment and a control method of the medical ventilation equipment. In the process that a user uses the medical ventilation equipment to be connected with a trachea cannula to convey breathing gas to the trachea of a patient, an air bag of the trachea cannula is inflated or deflated through a pressure adjusting module of the air bag pressure control device; the pressure of the air bag is further adjusted, the pressure of the air bag is measured through the pressure monitoring module, the pressure adjusting module is controlled through the control module to adjust the air bag at different pressures, the air leakage amount determined by the medical ventilation equipment under different air bag pressures is obtained at the same time, and then analysis is conducted according to the change condition of at least two air leakage amounts. After the target pressure is determined, the pressure adjusting module can be controlled to adjust the pressure of the air bag according to the target pressure, so that the pressure of the air bag can be automatically adjusted to adapt to physiological differences of different patients, and more accurate, real-time and personalized air bag pressure management is realized.

The invention belongs to the technical field of medical instruments, and discloses a lung leakage postoperative nursing device. Comprising a plurality of sections which are connected in series in a hinged mode. The driving part is fixedly connected with the fixed frame at the end part, and a first knocking part is arranged in each section of fixed frame. The driving part is connected with a rotating rod, the outer side of the rotating rod is fixedly connected with a striking block, the first striking part is located on the rotating track of the striking block, the rotating rod is provided with multiple sections, and each section of the rotating rod is rotationally arranged in different fixing frames. Gaps are reserved between every two sections of rotating rods, and the rotating rods are rotationally connected with connecting rods so that the rotating rods can swing to adjust the angle. The problems that in the prior art, sputum excretion equipment usually knocks the back of a patient or the whole chest of the patient in a wearable mode, puncture points of the patient are injured, and the illness state of the patient is aggravated are solved.

This utility model discloses an anesthesia breathing mask, including a breathing mask body. Symmetrical fixing straps are installed on the sides of the breathing mask body. A movable cavity is formed within each fixing strap, and a rotating rod is rotatably mounted within the movable cavity. A connecting strap is installed on the side of the rotating rod, and a torsion spring is installed within the rotating rod. One end of each fixing strap has a binding strap, and both ends of the binding strap are connected to two connecting straps. This utility model, by setting up fixing straps and movable cavities, allows the two connecting straps to be stretched by pulling one end of the binding strap. The rotating rod rotates within the movable cavity, torsionally twisting the torsion spring. The rebound of the torsion spring causes the connecting strap to wrap around the side of the rotating rod, thereby binding the binding strap behind the patient's head. After the breathing mask body is worn on the patient's face, the pulling of the binding strap ensures a close fit between the breathing mask body and the patient's face. This eliminates the need for medical personnel to manually press the breathing mask body to prevent air leakage, improving the applicability of the breathing mask body.

The main problem to be addressed by the present invention is to provide: a method for detecting an air leak present in a luminal organ with high reliability; and an agent for detecting an air leak.　As a means for solving the problem, provided are: a method for detecting an air leak present in a luminal organ, the method including a step for detecting the air leak by using CT to detect leakage, from the luminal organ, of at least one type of gas selected from the group consisting of xenon, krypton, and argon; and an agent for detecting an air leak present in a luminal organ, the agent containing at least one type of gas selected from the group consisting of xenon, krypton, and argon.

The invention discloses a split animal lung thoracoscopic surgery simulation training model and a use method thereof. The split animal lung thoracoscopic surgery simulation training model comprises a simulation surgery unit and a power unit. The simulation operation unit is composed of an outer cover, a lung containing cavity and a bottom plate, is provided with an intercostal channel and a liquid taking and discharging opening, and is further provided with an artery, a vein, a trachea, a water injection and overflow plate penetrating connector and a detachable water leakage partition plate. The power unit comprises an air pump, a blood circulation motor, a water adding motor, a blood powder water tank and a water purifying tank to form an air path, blood powder water circulation and a perfusion and overflow loop; the gas circuit is provided with a pressure valve, a dryer and a mucus buffer box, and the drainage loop is provided with a normally-open solenoid valve. During use, low-flow blood circulation and pressure-limiting ventilation self-inspection are performed before an operation; during operation, a gas path is closed for endoscopic operation, and exudation / bleeding is recovered to a blood powder water tank; and after operation, ventilating and filling pure water until overflowing, judging air leakage by bubbles underwater and judging errhysis by color difference. The model is high in simulation degree, intuitive in interpretation, safe and easy to maintain.

This invention discloses a puncture catheter device, including a puncture head housing. The puncture head housing includes a support section and an insertion section for insertion into a pneumoperitoneum along its length. The insertion section houses a balloon assembly. A fixing ring is slidably fitted onto the support section, and a locking component for fixing the fixing ring is connected to the end of the fixing ring furthest from the balloon assembly. During operation, the insertion section is inserted into the pneumoperitoneum. Gas is injected into the balloon assembly, causing it to expand within the pneumoperitoneum. The balloon assembly blocks the gap between the puncture head housing and the sidewall of the pneumoperitoneum, achieving an airtight seal. The fixing ring is then driven to slide along the support section to a preset position. The limiting space formed between the fixing ring and the balloon assembly abuts against the inner and outer walls of the pneumoperitoneum, providing support and airtightness for the puncture head housing. The balloon assembly prevents air leakage due to puncture head housing misalignment, ensuring sufficient airtightness and guaranteeing the safety and stability of the surgical procedure.

This invention discloses an intelligent mask sealing detection system and method based on active biomimetic fit adjustment, belonging to the field of intelligent protective equipment detection technology. The system includes the following steps: collecting breathing change information and fit contact feedback information between the mask and face throughout the entire mask-wearing process, and organizing this information according to the temporal relationship between the inhalation and exhalation phases to generate a breathing fit rhythm sequence reflecting the correspondence between breathing fluctuations and fit changes. This invention uses the breathing fit rhythm as its core to dynamically analyze the fit state, identifying short-term air leakage phenomena where the time deviation of the fit response during breathing rhythm switching is synchronized with the inhalation peak, thus avoiding misjudgments of sealing. Furthermore, based on the leakage distribution pattern, it pre-adjusts the fit adjustment and sampling sequence to ensure that the detection covers key change areas, improving the reliability of mask protection under complex breathing conditions.

The invention discloses a leakproofness testing device for producing a urinary catheterization bag, and relates to the technical field of urinary catheterization bag production, the leakproofness testing device comprises a workbench and a top plate, the bottom surface of the workbench is fixedly connected with a bottom plate, the bottom surface of the bottom plate is provided with a plurality of moving wheels, the inner wall of the workbench is fixedly connected with a partition plate, and the upper surface of the partition plate is provided with a testing mechanism; a pressure adjusting mechanism is arranged on the inner bottom face of the workbench and connected with the testing mechanism through an arranged seventh connecting pipe. According to the sealing performance testing device for producing the urinary catheterization bag, the sleeve in the adaptive adjusting unit is arranged to communicate the vent holes, air pressure overflow during inflation of the urinary catheterization bag can be avoided, redundant air pressure can enter an annular air bag, so that the annular air bag is expanded, and due to the design of the annular structure of the annular air bag, the sealing performance of the urinary catheterization bag is improved. The contact position of the urine guide bag butt joint opening can be filled in a sealed mode, and the situation that air leaks when the urine guide bag is inflated is effectively avoided.

Reminder of the titleDevice for sleeping with a medical device by Continuous Positive Pressure used for the treatment of sleep apnea. Technical field and statement of the problemThe invention relates to a device for sleeping with a CPAP device without risk of air leakage and removal of the mask. Main characteristics of the solutionIt consists of a T-shirt (1) or a nightie having on its front face a funnel-shaped pocket (2), equipped with a zipper (4) through which the air tube (6) is introduced to keep it in line with the patient's mask (7). Thus, during movements during sleep, the patient moves his mask and the air tube simultaneously in the same direction, canceling any friction force. Intended useThe device according to the invention is particularly intended for better patient acceptance of his Continuous Positive Pressure ventilation treatment.Choice of an illustration to accompany the abstractFigures for the abstract: Fig.1, Fig.2.

The utility model discloses a lung function tester with an auxiliary reminding function, and belongs to the technical field of lung function testers. The device comprises a host, a display electrically connected with the host, a data input device, a breathing pipeline installed on one side of the host through an adjusting support, an air leakage detection assembly and a prompt display electrically connected with the host, and the tail end of the breathing pipeline is provided with a replaceable mouthpiece; the air leakage detection assembly comprises a pickup cover, a horn-shaped collection cover, a fixing sleeve and an array microphone. And the prompt display is fixed above the breathing pipeline in front of the patient. On the basis of an original lung function tester, an air leakage detection assembly used for detecting air blowing and air leakage is additionally arranged, and a prompt displayer capable of correctly guiding a patient to breathe is additionally arranged. The burden of oral guidance of a doctor in the lung function examination process is relieved, and the problem of oral error possibly existing in manual guidance is also avoided.

The utility model relates to infusion apparatus catheter technical field, and disclose a kind of infusion apparatus catheter air leakage detection structure, including first sleeve and second sleeve, respectively install in the both ends of the catheter to be measured, pressure sensor and pressure piece are inlaid in the first sleeve, the end of the second sleeve is connected with gas injection pipe, pressure piece is pressed after pressure sensor, and the connecting section of the first sleeve and second sleeve is equipped with airbag sealing ring;Gas supply part is used to send gas to airbag sealing ring;Support piece, the first sleeve and second sleeve are equipped with support piece in;The utility model is inflated by airbag sealing ring, and the first sleeve and second sleeve are equipped with two airbag sealing rings, double sealing guarantee, effectively avoid the influence of detection result of connecting place air leakage, and support piece is supported from inner end catheter end, prevent its curling and cause air leakage, further exclude the detection error caused by non-catheter itself problem.

The utility model provides a mouth and face supporting device. The mouth and face supporting device comprises an external assembly, a limiting turned edge, a supporting piece, a fixing block and a pull block. The external assembly is used for covering the surface of a gum and supporting the face. A limiting turned edge is arranged on the external assembly and is used for limiting the external assembly; a supporting piece is arranged on the limiting curled edge and is used for supporting the opening part to be opened; a channel is formed in the supporting piece, and the channel penetrates through the external assembly, the limiting curled edge and the supporting piece; more than one fixing block is arranged on the supporting piece and is used for fixing the supporting piece; a pull block is arranged on the side, away from the fixing block, of the supporting piece and used for taking out the face supporting device. According to the mouth and face support device, the concave mouth and face part of the patient with tooth missing is supported through the external assembly, the mouth is supported to be opened through the supporting piece, attachment of the mouth and face part and the anaesthetic mask is increased, and the problem of air leakage in the ventilation process of the anaesthetic mask of the patient with tooth missing is solved.

The utility model belongs to the field of trachea cannulas, and discloses an air leakage prevention type trachea cannula which comprises a catheter. An air bag fixedly sleeves the peripheral wall of the outer side, far away from the end of the outer joint, of the catheter; one end of the air injection pipe is located on the inner side of the catheter and is communicated with the air bag, and the other end of the air injection pipe penetrates through the peripheral wall of the catheter and extends to the outer side of the catheter; a connecting cylinder is fixed to the end, away from the air bag, of the air injection pipe, the two ends of the connecting cylinder are open, the connecting cylinder is in through connection with the air injection pipe, an air valve is arranged in the connecting cylinder, and the connecting cylinder is sleeved with a detachably-connected cap used for sealing and blocking the connecting cylinder. Through double sealing of the air valve and the cap, the end, away from the air bag, of the air injection pipe is effectively sealed and blocked, the possibility of air leakage in the air bag is reduced, and in the follow-up intubation treatment process, medical staff do not need to monitor the air bag pressure and intermittently inject air to maintain the air bag pressure.

The utility model discloses an anti-air-leakage device for a pipeline in a snore-ceasing pillow, which comprises an exhaust component, an air pipe is arranged outside the exhaust component in an extending manner, a clamping component is arranged outside the air pipe, the clamping component comprises a fixing block with a hollow interior, and clamping blocks distributed in a circumferential array are arranged on the outer wall, close to the exhaust component, of the fixing block. Clamping grooves are formed between the clamping blocks, a rotating ring capable of keeping rotating is arranged on the outer wall, away from the exhaust assembly, of the fixing block, a spiral ring extending into the fixing block is arranged on the outer wall, close to the fixing block, of the rotating ring, clamping blocks are arranged in the clamping grooves in a clamped mode, and threaded grooves are formed in the positions, corresponding to the spiral ring, of the outer walls of the clamping blocks so as to keep meshing. The rotating ring is driven to maintain axial rotation so as to drive the clamping blocks to maintain reciprocating motion along the clamping grooves. According to the air leakage preventing device for the pipeline in the snore stopping pillow, the clamping blocks are inserted into the clamping grooves and can be meshed with the spiral ring, and when the rotating ring rotates, the distance between the clamping blocks can be changed so as to tightly clamp the air pipe.

The utility model discloses a bronchoscope's air leakage prevention negative pressure interface structure, including bronchoscope main part, the bottom of bronchoscope main part is provided with operating part, and the bottom of operating part is connected with the detection tube of checking bronchus, and the outer setting of bronchoscope main part has the connecting assembly, and the connecting assembly is provided with the suction needle cylinder of the suction of detection tube. When the bronchoscope main part cooperation detection equipment detects the bronchus of sick child, the stability of air pressure environment is very important. The device passes through the adsorption of sucking disc, and the air pressure fluctuation in subsequent suction process is effectively reduced, and the stability of air pressure environment in detection process is ensured. Meanwhile, the cooperation of positioning clamp, first spring, second connecting plate and other components realizes the firm fixing of suction needle cylinder, avoids the security risk caused by the loosening or falling of suction needle cylinder, and further improves the stability and safety of air pressure regulation.

The utility model discloses a superfine soft choledochoscope guiding aspirator under a laparoscope, which is specially designed for a common bile duct exploration operation through a gallbladder tube superfine choledochoscope and comprises a guiding tube capable of being bent by 150 degrees, the inner diameter of the guiding tube is 3.0 mm, and the superfine choledochoscope can pass through the guiding tube; the guide tube is provided with a small hole and an aspirator interface to attract normal saline flowing out of the choledochoscope to keep the surgical field clear; the head of the guide tube is provided with a soft cap to prevent air leakage. By means of flexible bending design, accurate size control and efficient suction function, accuracy and safety of an operation are remarkably improved. Meanwhile, the choledochoscope guiding device is simple in structure and convenient to operate, and the problems existing in a traditional choledochoscope guiding device are effectively solved. The guide aspirator is suitable for laparoscopic common bile duct exploration operation, has wide clinical application prospects and market value, and provides a new solution for treatment of biliary tract diseases.

In particular, the invention relates to a leak detection system for the precise and effective measurement of the location of air leaks in pneumatic systems, the leak severity indicating the air flow rate in the leak, and the provision of detailed information such as the measured values and the amount of leak loss to the user.

The utility model relates to a breast pump. The breast pump comprises an air circuit board, a cover plate and a breast pumping channel. The cover plate is arranged on the air path plate, a flow guide channel is formed in the air path plate, the flow guide channel is communicated with the breast pumping channel, a plurality of flow guide holes are formed in the air path plate, and the flow guide holes are communicated with the flow guide channel; a connecting assembly is arranged on the side, away from the flow guide channel, of the gas circuit board and communicates with the flow guide hole. According to the breast pump, the hidden danger that a hose is disengaged or loosened due to hose connection in the prior art can be avoided, so that the purpose of improving the stability of the breast pump is achieved, the probability of air leakage of the breast pump is reduced, and the reliability is good.

The aspirator for the single-hole thoracoscopic surgery comprises an aspiration head and a catheter, the aspiration head comprises a first aspiration portion and a second aspiration portion which are sequentially communicated in the aspiration direction, the inner diameter of the first aspiration portion is gradually increased in the aspiration direction, and the first aspiration portion is formed by jointly enclosing a closed face and a hole opening face. Three suction holes are formed in the perforated surface, and are arranged at intervals in the circumferential direction of the perforated surface; the inner diameter of the second suction part is gradually reduced in the suction direction, and the second suction part is communicated with the negative pressure device through a catheter. According to the utility model, the layout of the suction head is optimized, the first suction part is enclosed by the closed surface and the perforated surface, and the perforated surface is provided with the suction holes which are simple in number and reasonable in layout, so that an enough suction area is ensured, unnecessary air leakage channels are reduced, and the air leakage risk is reduced.

This invention relates to the field of medical device technology and provides a trigeminal nerve balloon catheter and its preparation method. By stretching the balloon and fixing it with silk thread, the problems of balloon detachment, separation, and damage to the balloon due to manufacturing defects are reduced. It solves the problems of easy collapse of the tube at the binding point and easy displacement of the balloon due to insufficient friction between the binding thread and the catheter during the movement of existing balloon catheter structures. The balloon is less prone to air leakage during use, which improves the manufacturability of the product and reduces the risk of product use.

The utility model discloses a switching device for a plastic tracheostomy tube and a lung function filter, which comprises a first connecting tube and a second connecting tube which are hollow and are communicated with each other, the diameter of a tube opening of the second connecting tube is larger than that of a tube opening of the first connecting tube, and the first connecting tube is suitable for being connected with the plastic tracheostomy tube. The second connecting pipe is suitable for being connected with a breathing filter, and the first connecting pipe and the second connecting pipe are both made of elastic transparent materials. The caliber of a pipe opening of the second connecting pipe is larger than that of a pipe opening of the first connecting pipe, so that matching with ports of an existing plastic tracheostomy pipe and a breathing filter is facilitated; the first connecting pipe and the second connecting pipe are made of elastic materials, so that the first connecting pipe and the second connecting pipe can be tightly connected with the corresponding pipe openings, air leakage at the joint is avoided, and the accuracy of lung function measurement of a tracheostomy patient can be ensured; meanwhile, the first connecting pipe and the second connecting pipe are both made of transparent materials, and the airway condition of the patient can be observed more conveniently.