75 results about "Bronchial tubes" patented technology

Apparatus and methods for deactivating bronchial nerves and ablating smooth muscle extending along a bronchial branch of a mammalian subject to treat asthma and related conditions. An ultrasonic transducer (11) is inserted into the bronchus as, for example, by advancing the distal end of a catheter (10) bearing the transducer into the bronchial section to be treated. The ultrasonic transducer emits ultrasound so as to heat tissues throughout a relatively large impact volume (13) to a temperature sufficient to inactivate nerve conduction and ablate smooth muscle but insufficient to cause rapid ablation or necrosis of the surrounding tissues. The treatment can be performed without locating or focusing on individual bronchial nerves or smooth muscle.

A phosphodiesterase type 5 inhibitor is used in the preparation of a medicament for resisting fibrotic diseases. Experiments in animal models of ischemia-reperfusion (UIRI)-induced renal fibrosis, unilateral ureteral obstruction (UUO)-caused kidney fibrosis and idiopathic pulmonary fibrosis show that a PDE5 inhibitor such as tadalafil, sildenafil and vardenafil can significantly inhibit the expression of multiple fibrosis iconic proteins such as fibronectin, collagen I, renal injury molecule-1, and α-skeletal muscle actin in UIRI and UUO renal fibrosis lesions, improves glomerulopathy, degree of renal tubular distension, renal interstitial collagen fiber deposition and inflammatory cell infiltration, reduces the fibrotic area within the lesion, and significantly inhibits the progression of renal fibrosis; and the PDE5 inhibitor can significantly improve smooth muscle proliferation and inflammatory cell infiltration in bronchioles and pulmonary arterioles of idiopathic pulmonary fibrosis lesion, improve damage condition of alveolar tissue, and significantly inhibit the progression of pulmonary fibrosis.

The utility model discloses a kind of reusable bronchial endoscope handle, including first shell, second shell and rotating mechanism, first shell and second shell are connected with lid and constitute handle cavity, and the pipe end of handle cavity is provided with insertion tube;Rotating mechanism has rotating wheel and axial pull switch being set on rotating wheel, rotating wheel is set in handle cavity, axial pull switch is set to the outside of first shell and / or second shell, rotating wheel is axially rotated and is connected by traction line and drives insertion tube swing.Equipped with axial pull switch on the outer surface of shell and fixedly connected with the output shaft of rotating wheel in this way, and then drive rotating wheel to axially rotate and drive insertion tube swing, can be exempted from to open shell hole in the side of two shells, and then improve the overall waterproof effect of bronchial endoscope handle, improve service life, and cleaning is more convenient, bronchial endoscope handle can be reused multiple times, save resources, reduce medical cost.

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 present invention relates to a guide sheath for peripheral bronchial lesion treatment, comprising a side tube for saline infusion, and injects physiological saline, which has been injected for peripheral bronchial dilation and access, through the side tube so that the physiological saline can efficiently reach a peripheral lung lesion as the physiological saline is injected through the side tube without insertion and removal of the guide sheath as in a conventional procedure, such that the precision and efficiency of a bronchoscopy procedure for diagnosing the peripheral lung lesion can be improved. In a conventional procedure, cold physiological saline or epinephrine for hemostasis could be administered after removal of the guide sheath and biopsy forceps, but the side tube of the guide sheath can administer a solution that assists hemostasis immediately after biopsy such that reduced side effects after the procedure and improved safety for the patient can be expected.

This application relates to the field of medical simulation model manufacturing technology, specifically to a method for fabricating a fourth-level bronchus model, comprising: S1. Reverse modeling based on CT scan data of healthy human bronchi, and using Lasty-R liquid material to 3D print a lost foam of the fourth-level bronchus; S2. Applying a layered coating of platinum silicone to the surface of the lost foam and simulating the histological features of the bronchus to obtain a bronchus blank coated with a silicone layer; S3. Placing the bronchus blank in a heating environment of ≥100℃ to soften and break the internal lost foam into fragments; S4. Adding a lubricant into the cavity of the bronchus blank, removing the lost foam fragments, and obtaining a hollow fourth-level bronchus model. This method simplifies the fabrication process of the fourth-level bronchus model, shortens the cycle time, and reduces costs. The model has high simulation accuracy and strong reusability, meeting the needs of clinical training and medical teaching in multiple scenarios.

This invention relates to the field of medical devices and discloses a novel laryngeal mask airway (LMA) interventional catheter device. It includes a main tube of a bronchial catheter assembly, with an outer tube coaxially sleeved around the main tube. A rotation limiting component is located on the upper part of the outer tube, and a serpentine component is embedded in the lower part of the main tube. An adjusting guidewire is installed inside the tube wall and connected to the serpentine component. Pulling the adjusting guidewire causes the lower part of the main tube to bend, adjusting the orientation of its bottom opening to achieve precise positioning of the lesion. It also includes a main insertion tube of the LMA assembly, which contains an interventional cavity and a visual cavity, and is equipped with a gastric aspiration tube with an independent aspiration channel. This invention utilizes the relative axial rotation of the outer tube and the main tube, combined with the internal adjusting guidewire applying tension to the serpentine component, to construct a multi-dimensional adjustable guiding trajectory for the deep airway. The parallel-through interventional cavities within the main insertion tube support surgical isolation operations, and the inflatable balloon and gastric aspiration tube establish a gastrointestinal aspiration isolation mechanism to avoid reflux and aspiration.

The invention belongs to the technical field of medical apparatus and instruments, and discloses an electromagnetic navigation real-time registration method and system in bronchial operation, a terminal and a storage medium, and the method comprises the steps: obtaining an airway tree center line point cloud; acquiring first pose information of an electromagnetic sensor, performing registration on the first pose information and the airway tree center line point cloud, and determining a pose transformation relation between a magnetic field coordinate system and a CT coordinate system; acquiring second pose information of the electromagnetic sensor, and converting the second pose information to a CT coordinate system based on the pose conversion relation; the transformed second pose information is registered with the airway tree center line point cloud, and the pose transformation relation between the magnetic field coordinate system and the CT coordinate system is updated; according to the invention, the real-time registration of electromagnetic navigation in the bronchus can be realized, the transformation relation between the magnetic field coordinate system and the CT coordinate system is continuously updated, and the positioning precision of electromagnetic navigation is improved.

Devices, systems, and methods for localized delivery of a chemotherapy, hormonal therapy, or targeted drug / biologic therapy to a target tissue area of an internal body organ of a patient. Computer systems may be used for planning and navigation in super selective drug delivery via a tracheobronchial airway. A catheter may be used to form a sealed treatment chamber in a natural lumen extending through the target tissue area. Air is purged from the chamber, which is then filled with a liquid drug solution for an adequate treatment session time, solution volume and drug concentration to saturate the target tissue area, thereby providing the treatment. The liquid drug solution may be circulated or recirculated through the chamber or maintained stationary therewithin to saturate the target tissue area. The chamber is evacuated at the end of the treatment session.

The invention relates to the field of bronchial interventional therapy, in particular to bronchial interventional medicine accurate pushing equipment which comprises a lantern ring sealing tile, a hinge part is arranged on one side of the outer arc face of the lantern ring sealing tile, and the lantern ring sealing tile is connected with an annular base disc through the hinge part of the outer arc face. A deformation cavity of the built-in guide sleeve is filled with the outer arc face of the medicine storage bag and tightly attached to the inner inclined end, a contact face gap is filled with a reserved cavity of the elastic blocking piece, and the sealing gasket is extruded through cooperation with the fastening nut to form port sealing. In the dosing process, a clamping structure of a conical clamping block and an external guide sleeve is combined with a hinged fixed elastic blocking piece of an annular base disc of a lantern ring sealing tile to synchronously reinforce sealing of a contact surface, so that liquid medicine is effectively prevented from being stored; a leakage path in the pushing and resetting process not only avoids medicine dosage loss and ensures that the medicine amount delivered to a lesion area reaches an expected treatment standard, but also prevents local stimulation or adverse reaction caused by the fact that leaked liquid medicine makes contact with normal tissues of the bronchial tube, and the treatment risk of a patient is reduced.

The invention relates to the technical field of medical instruments, and discloses a trachea cannula with an oral cavity and airway secretion suction function, the trachea cannula comprises two outer tubes, the outer part of one outer tube is fixedly connected with an air transmission assembly, the inner wall of one outer tube is provided with an inner tube, the close sides of the two outer tubes are fixedly connected with an air bag, and the air bag is provided with an air outlet. The inner tube penetrates through the interior of the air bag, one end of the inner tube is fixedly connected with a rubber column, one end of one outer tube is fixed to one side of the rubber column, the inner wall of the rubber column is fixedly connected with a plurality of thin tubes, the inner wall of the rubber column is slidably connected with a telescopic tube, and one side of the telescopic tube is provided with an air hole communicated with the thin tubes. The suction tube can be unfolded to be in a Y shape, branches on the two sides of the suction tube can be accurately and correspondingly inserted into the left main bronchial tube and the right main bronchial tube, full-airway secretion cleaning can be completed without adjusting the position of the intubation tube many times, operation time consumption is effectively reduced, and practicability and safety of clinical use are improved.

The utility model belongs to the technical field of medical devices, and discloses a multifunctional double-cavity special-shaped tracheal catheter which comprises a main tube and a plugging tube, the main tube and the plugging tube are arranged in parallel and connected into a whole, the front end of the plugging tube protrudes out of the front end of the main tube and is fixedly sleeved with an elastic sleeve bag I, and the front end of the main tube is fixedly sleeved with an elastic sleeve bag II. A monitoring mechanism is arranged on the side, close to the plugging tube, of the front end of the main tube, the rear end of the plugging tube is sleeved with a sealing cap, and the bending control sheath tube is matched with the plugging tube; the multifunctional double-cavity special-shaped tracheal catheter is more comprehensive in function, easy to operate, time-saving, free of tube replacement, small in stimulation, more stable in hemodynamics, more convenient to use, more suitable for operation requirements, stable in plugging, not prone to slipping of the cuff, good in lung collapse of the plugging device, capable of providing a better operation view field and easy in sputum suction. The special-shaped catheter is thinner than a double-lumen bronchial catheter, the patient adaptability is good, and the plugging tube can be conveniently guided to enter the operation side lung.

The present invention provides an inner membrane tube bronchial catheter. The head of the main ventilation tube is equipped with a main ventilation port and a lateral ventilation port, while the tail is provided with two ventilator interfaces. One of the two ventilation ports can be selectively connected to either ventilator interface, thereby forming a membrane ventilation lumen. A front sealing cuff and a rear sealing cuff are respectively arranged at the anterior and posterior sides of the lateral ventilation port, and they are each connected to an inflation tube and an inflation valve. During thoracic surgery, the front sealing cuff is inserted into one bronchial orifice, while the rear sealing cuff remains within the main airway, with the lateral ventilation port oriented toward the opposite bronchial orifice; by inflating or deflating the membranous ventilation tube, lung isolation can be easily achieved, thereby minimizing the catheter's outer diameter, reducing intubation-related injury, and providing a larger ventilation chamber with lower airway resistance when ventilating either lung. Moreover, suctioning and bronchoscopic examination are made more convenient. After the surgery, the front sealing cuff can be deflated and retracted into the main airway, thereby converting the device into a single-lumen endotracheal tube. The catheter has a simple design, is cost-effective, has a low complication rate, and holds significant potential for clinical application.

Apparatus and methods for deactivating bronchial nerves extending along a bronchial branch of a mammalian subject to treat asthma and related conditions. An ultrasonic transducer (11) is inserted into the bronchus as, for example, by advancing the distal end of a catheter (10) bearing the transducer into the bronchial section to be treated. The ultrasonic transducer emits focused ultrasound so as to heat tissues throughout circular impact volume (13) as, for example, at least about 1 cm3 encompassing the bronchus to a temperature sufficient to inactivate nerve conduction but insufficient to cause rapid ablation or necrosis of the tissues. The treatment can be performed without locating or focusing on individual bronchial nerves.

The utility model discloses a single-lung collapse bronchial catheter, which relates to the related technical field of medical equipment and comprises a catheter, a through air cavity pipeline is arranged in the catheter, and a cuff inflation cavity is arranged on one side of the air cavity pipeline of the catheter; one end of the catheter is connected with a cuff, the other end of the catheter is connected with an adapter used for being connected with the outside, and the adapter is connected with an inflation structure communicated with an inflation cavity of the cuff; the utility model solves the problems that the existing plugging trachea cannula cannot realize real single-lung collapse; no strict operation sequence exists; when the device is used in cooperation with the laryngeal mask, the risk of displacement of the laryngeal mask is reduced; the size of the catheter is increased, so that short-time natural lung collapse and an independent collapse channel can be realized through the inner cavity of the catheter, mechanical ventilation and plugging are not influenced, and the operation time can be shortened; the three cavities of the main pipe are independent of one another, so that plugging, collapsing and visual functions are not mutually influenced.

The invention provides a pulmonary emphysema treatment instrument which comprises a main channel, the main channel comprises an air inlet, an air outlet and at least one cavity, the cavity is provided with a first necking opening and a second necking opening, the second necking opening is provided with an end face, the inner wall, close to the second necking opening, of the cavity is provided with a first point and a second point at will, and the inner wall, close to the first necking opening, of the cavity is provided with a third point and a fourth point at will. The included angle e between the ray which takes the second point as an end point and passes through the first point and the normal meets 90 degrees < = e < = 180 degrees, the included angle f between the ray which takes the third point as an end point and passes through the fourth point and the normal is smaller than 90 degrees, and a main channel is defined by the supporting framework and the covering film. The support skeleton and the covering film are combined, so that the support skeleton is stably fixed in the bronchus, the wall thickness can be reduced, the sectional area after loading is smaller, the support skeleton can be conveniently loaded into a thinner sheath tube, the support skeleton can be implanted into a smaller bronchus, and the clinical application range is wide.

A medical suctioning system includes a device for insertion into an intubated patient's bronchi, the device including a controller end having actuating components that include a control mechanism coupled to a plurality of cables at the controller end, the controller end having a suction control button engaged with a plunger to allow for activation and deactivation of suction through the controller end; a control lever in communication with an articulating lever housed within the controller end, the articulating lever to engage with one or more cables disposed through the controller end and to engage with an articulating tip portion at a distal end opposite the controller end; and a catheter extending away from the controller end to the distal end.

1. The name of the design product: controllable bronchial intubation tube. 2. The use of the design product: suitable for airway management and lung isolation during various surgical procedures related to the patient's lungs. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: A-A cross-sectional view. 5. Other circumstances that need to be explained: The product is an elongated item, and the drawing method is omitted.

The utility model discloses a bronchofiberscope which comprises a functional tube and an operating handle, and a negative pressure tube and a flushing tube are arranged in the functional tube. The operating handle is provided with a control knob, a flushing button, a negative pressure connector and a flushing connector, the negative pressure connector is used for being connected with an external negative pressure air source, and the flushing connector is used for being connected with an external flushing source. Wherein the negative pressure pipe and the flushing pipe are both arranged in the functional pipe, the negative pressure pipe penetrates through the interior of the operating handle to be communicated with the negative pressure connector, the flushing pipe penetrates through the interior of the operating handle to be communicated with the flushing connector, the control knob is used for controlling the negative pressure pipe and the flushing pipe located in the functional pipe to turn, and the flushing button is used for controlling on-off of the flushing pipe. The flushing pipeline is integrated in the bronchofiberscope, so that a user can directly perform operations such as bronchus flushing or pulmonary alveolar lavage through the bronchofiberscope without additionally preparing flushing fluid and related flushing equipment.

The utility model discloses a diameter-variable bronchial occlusion treatment plug, which comprises a plug body, a bag cavity, an inflation tube, an inflation nozzle, a catheter and a valve nozzle, the plug body is a soft circular truncated cone body, the outer surface of the plug body consists of an upper bottom surface, a lower bottom surface and a side surface, the bag cavity is arranged on the inner side of the side surface, the inflation tube is fixed in the plug body, one end opening is arranged in the bag cavity and is communicated with the bag cavity, and the other end opening is communicated with the catheter. The guide pipe penetrates through the plug body, the upper bottom surface of one end of the guide pipe is opened, and the lower bottom surface of the other end of the guide pipe is connected with the valve nozzle; the device further comprises a conveying pipe, a conveying opening and a clamp handle, the conveying pipe is a bendable catheter which can pass through and is longer than the bronchoscope clamp channel, one end of the conveying pipe can be inserted into the inflation nozzle or the valve nozzle to be connected with the inflation nozzle or the valve nozzle, the other end of the conveying pipe is connected with the conveying opening, the conveying opening can be connected with an injector, and the clamp handle is arranged in the center of the lower bottom face. The bronchus plug has the advantages that the size of the plug body can be adjusted through the bag cavity to be accurately sealed with the blocked bronchus cavity, and the condition in the blocked bronchus can be diagnosed and treated through the catheter.

The invention discloses a double-camera visual flushing double-lumen bronchial intubation device and a cooperative control method, belongs to the technical field of medical instruments, and aims to solve the problems that an existing device is single in data acquisition and lagged in abnormal recognition, and double video streams are prone to distracting attention of doctors. The method comprises the following steps: capturing the positioning depth of a tube core through a positioner, triggering double cameras to collect video streams of a cuff and a cavity and constructing a collaborative data set, judging and triggering the sampling analysis of the video streams of the cavity through the stable state of the tube core, regulating and controlling a sampling interval, screening redundant frames and constructing a key frame set, and calculating and identifying abnormal frames through reference correction and multi-feature difference. And adaptively switching the video source of the display terminal based on the abnormal degree. According to the invention, accurate identification and efficient monitoring of airway abnormity are realized, clinical operation concentration and response timeliness are taken into account, and the safety and operation efficiency of intubation operation are remarkably improved.

A dry drug powder inhalation device comprises a breath detection device, a drug delivery device and a computer device. The respiration detection device is configured to monitor a respiration state of an animal and transmit a plurality of respiration state signals. The administration device is configured to orally or nasally apply a dry drug powder to the lungs of the animal. The computer device is configured to receive the breathing status signal, assess a tense status of the animal, predict a breathing cycle of the animal, and control the administration device to release dry drug powder for autonomous inhalation by the animal during non-tense inspiration. Also disclosed herein are methods of drug dry powder administration. The medicine dry powder inhalation device can improve effective administration of medicine dry powder to bronchus or lungs through the trachea of an animal.

The invention discloses a lung function training device which comprises a shell, an air outlet end and a blowing nozzle are arranged at the left end and the right end of the shell respectively, a fixing base is arranged on the side, close to the air outlet end, of the inner wall of the shell, a reed is fixedly connected to the side face of the fixing base, and a bypass cavity is formed in the side, close to the blowing nozzle, of the inner wall of the shell. By arranging the shell, the reed and the diaphragm, firstly, a patient actively blows air to impact the reed, so that the reed generates a primary vibration source, when the frequency of pressure pulsation generated by the reed is close to or consistent with the inherent frequency of the diaphragm, the diaphragm enters a resonance state, then the diaphragm generates an ultimate vibration source, vibration is transmitted to the whole shell, and the vibration is transmitted to the whole shell. The high-frequency vibration is utilized to effectively reduce the viscosity and adhesive force of sputum, so that the sputum is loosened from the airway wall, and exhaled air flow generated by blowing can also help the loosened sputum to move towards the oral cavity.

A compact, hands-free, oral positive expiratory pressure (PEP) device designed to optimize respiratory mechanics by providing controlled resistance during exhalation. The device slows the respiratory rate, prolongs exhalation, generates positive airway pressure, and thereby reduces breathlessness, enhances oxygenation, and expands functional lung capacity. It is particularly beneficial in conditions such as chronic obstructive pulmonary disease (COPD), tracheobronchomalacia, excessive dynamic airway collapse (EDAC), bronchiectasis, atelectasis, and acute respiratory distress syndromes, while also serving broader functions like stress reduction, cardiovascular support, and respiratory muscle training. The device is lightweight, portable, and lanyard-supported, allowing continuous availability for daily use and physical activity. Structurally, it is conical, features a primary airflow chamber, a mouth opening, and one or more resistance orifices that regulate exhalation pressure. By maintaining consistent PEP levels (ranging approximately 4-15 cm H2O), the device helps prevent airway collapse, promotes alveolar recruitment, and improves the ventilation-perfusion ratio.

The application discloses application of triacetylandrographolide and a composition thereof in preparation of a medicine for relaxing airway smooth muscle, and belongs to the technical field of medicines. In view of the problems of obvious side effects and narrow treatment window of existing medicines, the application finds that triacetylandrographolide (3, 14, 19-Triacetylandrographolide, TAA) and the composition thereof have tracheal relaxation activity, and the triacetylandrographolide and the composition thereof play a relaxation role through non-competitive antagonism of a downstream signal path of a cholinergic receptor. The new mechanism provides a new idea for developing a new bronchial dilator for overcoming drug resistance of existing medicines. The TAA after preparation optimization can be used for treating or preventing airway obstructive diseases such as asthma, chronic obstructive pulmonary disease, bronchitis and acute lung injury.

A bronchial flow control device comprises a tubular body comprising struts extending between first and second ends, the struts being expandable between radially contracted and expanded shapes, a valve disposed proximate the second end, a membrane covering the struts, and microfibers on the membrane. A method comprises attaching a bronchial valve to a delivery catheter in an unexpanded state, inserting the bronchial valve into an airway, actuating the delivery catheter to radially expand the bronchial valve, pushing microfibers into an anatomic duct wall, detaching the delivery catheter from the bronchial valve, and withdrawing the delivery catheter from the airway. A delivery system for a valve comprises a handle, a first actuator to control a rotational position of a first coupler, a second actuator to control a radial position of a second coupler, and a third actuator to control an axial position between the first and second couplers.

The utility model relates to the field of medical equipment, and discloses an atomizing device capable of being connected with an autonomous breathing machine for medicine inhalation, which comprises an atomizing cup, the top of the front side wall of the atomizing cup is communicated and connected with an atomizing nozzle, the top of the atomizing nozzle is rotatably connected with a top plate, the inside of the top plate is fixedly connected with a sealing ring, and the sealing ring is fixedly connected with the atomizing nozzle. The rear side wall of the top plate is fixedly connected with a pressing buckle plate. Through the arrangement of the atomizing cup, the atomizing nozzle, the conductive probe, the three-way pipe and the five-way pipe, the problems that the treatment time is prolonged, and the workload and operation complexity of medical staff are reduced for patients who have serious illness conditions and need quick-acting medicine can be solved; the hole in the front end of the right part of the five-way tube is connected with the rear end of the atomizing cup, so that the medicine mist can be directly adsorbed to the oral cavity, the throat, the trachea, the bronchus, the pulmonary alveolus and the like of a patient and is absorbed by the mucosa of the patient to achieve the aim of treatment.

The utility model discloses a surface leveling device for metal product processing, and relates to the technical field of metal processing, the surface leveling device comprises a machine table, rectangular through holes are symmetrically formed in the top of the machine table in a penetrating manner, an electric sliding rail is arranged at the top of the machine table, a positioning mold is arranged on the electric sliding rail, a polishing mechanism is arranged on the machine table, and the polishing mechanism is arranged on the machine table. The polishing mechanism comprises a lifting assembly arranged on the machine table; the air suction assembly is arranged at the top of the lifting assembly; and the rotating assembly is arranged in the lifting assembly, and the rotating assembly comprises a connecting pipe. According to the surface flattening device for metal product machining, after an air suction pipe is connected with an external dust collector, the air suction pipe is rotationally connected with a connecting pipe through a rotary connector, the air suction pipe sucks air, negative pressure is formed in the connecting pipe, branch air pipes and a dust suction hood, and metal powder generated in the grinding process can be sucked by the dust suction hood and passes through the branch air pipes and the connecting pipe; and finally, the metal powder is discharged through the air suction pipe, so that the metal powder is effectively prevented from drifting everywhere.

The invention relates to the technical field of medical instruments, in particular to a bronchus valve implantation device and application thereof.The bronchus valve implantation device comprises a tube body and a handle, a three-jaw chuck (1) is arranged at the front end of the tube body, and the handle controls the three-jaw chuck (1) to contract or open; according to the device, the valve in the bronchial tube can be accurately placed in a targeted position, the technical operation is simple, and clamping and releasing are very convenient.

A system and method of applying therapy to a patient includes navigating a dual lumen catheter to a desired segment of bronchus; inflating, via a first tube of the dual lumen catheter, a balloon located on a distal portion of the catheter to isolate the segment bronchial tube; injecting a therapeutic medium into the isolated segment bronchial tube via a second tube of the dual lumen catheter; and retracting the dual lumen catheter to leave the balloon indwelling, where the balloon retains the injected therapeutic medium in the isolated segment bronchial tube.