57 results about "Primary bronchus" patented technology

Methods, systems and devices are described for new modes of ventilation in which specific lung areas are ventilated with an indwelling trans-tracheobronchial catheter for the purpose of improving ventilation and reducing hyperinflation in that specific lung area, and for redistributing inspired air to other healthier lung areas, for treating respiratory disorders such as COPD, ARDS, SARS, CF, and TB. Trans-Tracheobronchial Segmental Ventilation (TTSV) is performed on either a naturally breathing or a mechanical ventilated patient by placing a uniquely configured indwelling catheter into a bronchus of a poorly ventilated specific lung area and providing direct ventilation to that area. The catheter can be left in place for extended periods without clinician attendance or vigilance. Ventilation includes delivery of respiratory gases, therapeutic gases or agents and evacuation of stagnant gases, mixed gases or waste fluids. Typically the catheter's distal tip is anchored without occluding the bronchus but optionally may intermittently or continuously occlude the bronchus. TTSV is optionally performed by insufflation only of the area, or by application of vacuum to the area, can include elevating or reducing the pressure in the targeted area to facilitate stagnant gas removal, or can include blocking the area to divert inspired gas to better functioning areas.

An endobronchial tube comprising at least two lumens of different lengths for selectively associating with a patient about at least two locations relative to the Tracheal Carina. said tube comprising: a first lumen having an open distal end that associates proximally to the Carina within the Trachea, with a first inflatable cuff; a second lumen having an open distal end that extends distally, past the Carina and associates within one of the Left Bronchial branch and Right Bronchial branch with a second inflatable cuff; a dedicated image sensor lumen spanning the length of said first lumen, the dedicated image sensor lumen comprising an image sensor and illumination source disposed adjacent to the distal end of said first lumen, and configured to provide an image of the Tracheal bifurcation of the Tracheal Carina, the openings of the Left Bronchial branch, and the opening Right Bronchial branch; and at least one dedicated cleaning lumen disposed parallel with said dedicated image sensor lumen along the length of said endobronchial tube and wherein said cleaning lumen is configured to forms a cleaning nozzle at the distal end, wherein said cleaning nozzle is directed toward said image sensor lumen at its distal end.

A method of diagnosing an air leak in a lung compartment of a patient may include: advancing a diagnostic catheter into an airway leading to the lung compartment; inflating an occluding member on the catheter to form a seal with a wall of the airway and thus isolate the lung compartment; measuring air pressure within the lung compartment during multiple breaths, using the diagnostic catheter; displaying the measured air pressure as an air pressure value on a console coupled with the diagnostic catheter; and determining whether an air leak is present in the lung compartment based on the displayed air pressure value during the multiple breaths.

Provided is a bronchoscopy training model for training in a technique for puncturing a lymph node adjacent to trachea / bronchi from the inside of the trachea / bronchi with an ultrasonic bronchoscope. Specifically, provided is a training model for training in ultrasound-guided needle puncture of a lymph node in a vicinity of trachea / bronchi, the training model including a jaw model, a bronchus model, and a replaceable needle puncture site, in which: the needle puncture site includes a simulated tracheal / bronchial cartilage, a simulated lymph node, and a simulated surrounding tissue; the simulated tracheal / bronchial cartilage, the simulated lymph node, and the simulated surrounding tissue in the needle puncture site each include as a main component any one of a silicone rubber and a urethane resin, and at least the simulated tracheal / bronchial cartilage and the simulated surrounding tissue in the needle puncture site each further include an organic powder filler blended therein; and the simulated tracheal / bronchial cartilage in the needle puncture site is provided on a tracheal / bronchial inner wall surface of the needle puncture site.

A system for unilateral lung ventilation includes an endotracheal tube and a blocking device for blocking the bronchus of a non-ventilated lung to prevent a ventilation medium from entering the lung. The blocking device includes an inflatable member supported by a catheter having an inflation lumen for inflating the inflatable member. The catheter includes at least one lung treatment lumen for delivering a therapeutic agent to the non-ventilated lung. An inner channel within the main channel and a side branch provide a guideway for the blocking device within the tube. A valve may be included to close the side branch when the blocking device is removed from the inner channel for parallel flow of ventilating gas in the main and inner channels. A method of using the system provides for ventilation / perfusion (V / Q) matching by respectively delivering cooled air and nitric oxide to the non-ventilated and ventilated lungs.

The invention relates to a trachea catheter, in particular to a trachea catheter for a thoracic cavity operation and discloses a single-cavity multi-bag trachea catheter. The trachea catheter comprises a trachea catheter and a catheter air bag arranged on the outer wall of the trachea catheter, wherein the trachea catheter air bag is connected with a trachea catheter air bag inflation tube; the lower end of the trachea catheter is connected with a bronchus catheter of which the inner diameter is smaller than that of the trachea catheter; the bronchus catheter is provided with an outer air bag of the bronchus catheter, and the outer air bag of the bronchus catheter is connected with an outer air bag inflation tube of the bronchus catheter; and a connecting part of the bronchus catheter and the lower end of the trachea catheter is reserved with a trachea catheter opening and provided with an opening sealing component. According to the technical scheme of the invention, through the arrangement of the opening sealing component, the single-cavity trachea catheter can be used for realizing all functions of a double-cavity trachea catheter, thereby various defects of too thick outer diameter, too thin inner diameter during ventilating of the lung at a single side, more connecting tubes, inconvenient operation, too large mechanical dead space being not suitable for child operations, and the like of the traditional double-cavity trachea catheter are overcome. The single-cavity double-outlet trachea catheter can be used for child thoracic cavity operations, solves the problem that a double-cavity trachea catheter for children is not provided for the child thoracic cavity operations at present and provides a safer guarantee for external chest anesthesia of children.

A catheter for tracheal or bronchial suction including a unit for displaying the artificial airways, the trachea and the bronchial tree so as to allow the removal of secretions; in particular, the catheter for tracheal or bronchial suction includes optical fibers, a microcamera or another visualization technology positioned in the distal end. The operator can identify the position of the distal end, of the artificial airways, of the trachea and of the bronchial tree on the screen. Therefore, it is possible to ensure that the tube of the catheter is adjacent to or inside collections of fluid secretions or other material to be sucked up. The suction can be selectively applied to avoid damage to the mucosa and to facilitate the more complete elimination of secretions.

The invention relates to a bronchial catheter with a single cavity and double sacs, comprising a single-cavity catheter, a catheter interface, a breathing loop adapter (including a bronchofiberscope inlet, an inlet cap, a sampling tube and a breathing loop interface), a drainage tube interface, a drainage tube interface cap, a drainage tube, a trachea air sac inflation tube, a trachea air sac air valve, a trachea air sac, a bronchial air sac inflation tube, a bronchial air sac air valve, a bronchial air sac, an affected side blocking segment, a drainage tube opening, a bronchial catheter opening, a carina pothook and a single-side indicatrix. The invention has the advantages that the pipe diameter of the bronchial catheter is approach to that of a common bronchial catheter with a single cavity, the catheter is convenient to replace and is not easy to damage; a remote end arc-shaped structure has a guiding function and is convenient to locate; single or double lungs are regulated to aerate through the inflation and the deflation of the air sacs, which is simple, convenient and flexible; the double sacs are good in structure fixation, are not easy to move and have high safety; the drainage tube can assist in draining, exhausting and repeatedly expanding of the side lung of a patient and ensure the aerating effect, and the near end of the drainage tube can be sealed; and the bronchial catheter can ensure safe operation and is simple and convenient to operate.

A non-slip, bronchial tube is provided for insertion into the trachea for chest surgery purposes. Insertion is accomplished through a conventional endotracheal tube by means of a built-in, spring loaded stylet. An endobronchial tube is attached to the end of the bronchial tube and is configured as a Y-guide having expandable left and right arms which are glued or welded to join a central portion. The spring loaded stylet is mounted within the central portion. A spring loading at the end of the bronchial tube is secured within a sheath mounted along the distal end of one arm, typically along the left arm, and this spring loading is secured within an inflatable cuff. When the bronchial tube is inserted through the endotracheal tube by means of the stylet, the Y-guide which is attached to the bronchial tube will also move forward causing the arms of the Y-guide to press lightly against the carina of the trachea-bronchial tree and separate into the left and right bronchia. When the cuff is inflated, the left bronchial lumen is isolated from the trachea-right bronchial space and can be left open to the atmosphere without slippage which enables oxygen and anesthetic gas to be ventilated only into the right lung during surgery. After surgery, the cuff is deflated and the device is removed with the stylet.

A valve to perform lung volume reduction procedures is described. The valve is formed of a braided structure that is adapted for endoscopic insertion in a bronchial passage of a patient's lung. The braided structure has a proximal end and a distal end and is covered with a non porous coating adapted to prevent flow of air into the. A constricted portion of the braided structure is used to prevent flow of air through a central lumen of the structure, and to define at least one funnel shaped portion. The funnel shaped portion blocks the flow of air towards the constriction, i.e. towards the core of the lung. At least one hole is formed in the braided structure to permit flow of mucus from the distal end to the proximal end, to be expelled out of the lungs.

The invention discloses a lung isolation catheter which comprises a main tracheal catheter, a bronchial catheter, a first opening and second openings, wherein a first air sac is arranged on the outer wall of the main tracheal catheter and connected with a first inflation valve; the bronchial catheter is connected with the lower end of the main tracheal catheter; a second air sac is arranged on the outer wall of the bronchial catheter and connected with a second inflation valve; a sealing member is arranged inside the bronchial catheter and connected to a third inflation valve through a ventilation pressure control device; the first opening is formed in the tail end of the bronchial catheter; the second openings are formed in the wall at the lower end part of the main tracheal catheter and positioned below the first air sac; and at least two second openings are distributed along the peripheral surface of the main tracheal catheter. The lung isolation catheter disclosed by the invention has more excellent ventilation function than that of the currently applied double-lumen tracheal catheter, is operated more safely, conveniently and efficiently and the risk of the existing double-lumen endotracheal intubation can be reduced.

The invention relates to a special endotracheal tube for lung transplantation, which is particularly used for supplying air for lungs of a patient during lung transplantation or pulmonary resection and belongs to the technical field of medical instruments. The special endotracheal tube mainly comprises an outer cannula and an inner cannula, and the inner cannula is fixed in the outer cannula. An outer cannula air sac is arranged on the outer surface of the middle of the outer cannula. A first inner cannula air sac and a second inner cannula air sac are successively arranged on the outer surface of the lower portion of the inner cannula. The special endotracheal tube is simple, compact and reasonable in structure and simple and convenient in operation, the single inner cannula is used for carrying out breathing support for the lung of the patient, the pressure of the trachea is low, and the possibility of injury of the lung on a non-surgical side due to mechanical breathing is reduced; the bronchia on a surgical side is closed by the air sacs, so that liquid of the lung on the surgical side cannot enter the non-surgical side and the trachea, and breathing support leakage can be avoided while the bronchia is sutured; and the inner cannula is taken out after surgery is finished, the outer cannula is remained to carry out breathing support, and sufferings caused by replacement of a catheter and risks of injury of the trachea are avoided.

Apparatus, kits and methods for flaring an end of a stent that can then be placed within the ostium of a vessel are disclosed. Areas in which ostial stents with flared ends could be used may include, e.g., the left main artery, renal arteries, sub-clavian artery, right coronary artery, circumflex artery, et al.

The invention relates to a one-lung ventilation integrated device of a single-cavity trachea catheter and a bronchus blocking device, belonging to medical apparatuses. The one-lung ventilation integrated device comprises a Y-shaped tee joint connected with the single-cavity trachea catheter, wherein a catheter bag is arranged at the front end of the single-cavity trachea catheter, an unaffected-side bronchus opening and an affected-side bronchus opening are arranged on a left side and a right side in the front of the catheter bag, a tip end of the catheter bag is provided with a V-shaped bulge clamp, a bronchus blocking system and the single-cavity trachea catheter are integrated, the front end of a blocking pipe penetrates out from an upper edge of the affected-side bronchus opening and is out of shape in the wall of a catheter body upwards, a blocking bag is arranged at the front end of the blocking pipe, the tail end of the blocking pipe penetrates out from an affected-side root of the catheter body and is connected with a bidirectional blocking pipe switch, and an elastic guide wire special for dredging the blocking pipe is arranged at the tail end of the blocking pipe. The one-lung ventilation integrated device of the single-cavity trachea catheter and the bronchus blocking device, disclosed by the invention, has a simple structure and reasonable design and integrates various advantages of a traditional one-lung ventilation device so as to provide clinic with a novel one-lung ventilation device having the advantages of convenience for operation, exactness in location and flexibility for conversion of one-lung ventilation and double-lung ventilation, and makes an affected lung better keep a static collapse state.

The embodiment of the invention discloses a double-lumen bronchial tube, and relates to the technical field of medical equipment. The double-lumen bronchial tube comprises a double-lumen tube, a bronchial blocking tube, a main trachea air bag, a bronchial fixing air bag, a bronchial blocking air bag, an inflation tube and a medicated sputum suction joint, the bronchial blocking tube is connected to the lower end of the double-lumen tube, the main trachea air bag is arranged on the outer side wall of the lower part of the double-lumen tube, the bronchial fixing air bag and the bronchial blocking air bag are sequentially arranged on the outer side wall of the bronchial blocking tube from top to bottom, a medicine spraying and sputum suction port is formed in the bronchial blocking tube between the bronchial fixing air bag and the bronchial blocking air bag, the medicated sputum suction joint communicates with the medicine spraying and sputum suction port through a pipeline penetrating inthe double-lumen tube and the bronchial blocking tube, and the inflation tube is connected with all air bags for air inflation. The technical blanks of medicine adding, sputum suction, temperature measuring and lubrication to the bronchus in the current market are filled up, and greater convenience is provided for clinical use.

The invention discloses a bilateral ventilation type left bronchus catheter comprising a main tube on which a right-side bronchus opening is arranged, wherein the main tube is provided with a cuff; the cuff is provided with a cuff tracheae one end of which is communicated with the cuff, and the other end of the cuff tracheae penetrates through the wall of the main tube to extend out of the main tube; the left bronchus is provided with two electrodes which are respectively connected with one end of each of electrode leads; and the other ends of the electrode leads respectively penetrate through the wall of the main tube to extend out of the main tube. According to the invention, two lungs can realize ventilation and respiratory tract dead spaces can be reduced maximally, thus ensuring enough ventilation. By using the bilateral ventilation type left bronchial catheter, electrocardingraphy, electrocardio defibrillation and pacemaking and body temperature detection can be carried out simultaneously while artificial respiration is performed, thus greatly shortening the preparation time of heart pacemaking. The bilateral ventilation type left bronchial catheter is wide in application, and can be widely applied to medical fields such as anaesthesia departments, respiration departments, cardiovascular departments, cardiothoracic surgery, emergency departments and the like.

The invention discloses a double-cavity tracheal catheter. The double-cavity tracheal catheter comprises a left catheter body and a right catheter body. The left catheter body and the right catheter body are semicircular tubes. The upper end of the left catheter body and the upper end of the right catheter body are provided with catheter joints respectively. A main inflation bag is arranged outside the left catheter body and the right catheter body. The main inflation bag is of an annular structure. The left catheter body and the right catheter body are sleeved with the main inflation bag. The main inflation bag is fixed to the right catheter body. The left catheter body can vertically slide relative to the right catheter body and the main inflation bag. Auxiliary inflation bags are arranged at the lower end of the left catheter body and the lower end of the right catheter body respectively. The main inflation bag and the auxiliary inflation bag are independently communicated with inflation tubes. The inflation tube connected with the auxiliary inflation bag of the left catheter body is buried in the catheter wall of the left catheter body. The inflation tube connected with the auxiliary inflation bag of the right catheter body and the inflation tube connected with the main inflation bag are both buried in the catheter wall of the right catheter body. When the catheter is used for carrying out intubation, a left double-cavity tracheal catheter or a right double-cavity tracheal catheter does not need to be selected according to surgical conditions, left bronchial intubation and right bronchial intubation can be conveniently achieved, and the success rate of left bronchial intubation is greatly increased.

A catheter for tracheal or bronchial suction including a unit for displaying the artificial airways, the trachea and the bronchial tree so as to allow the removal of secretions; in particular, the catheter for tracheal or bronchial suction includes optical fibers, a microcamera or another visualization technology positioned in the distal end. The operator can identify the position of the distal end, of the artificial airways, of the trachea and of the bronchial tree on the screen. Therefore, it is possible to ensure that the tube of the catheter is adjacent to or inside collections of fluid secretions or other material to be sucked up. The suction can be selectively applied to avoid damage to the mucosa and to facilitate the more complete elimination of secretions.

The present invention relates to an apparatus for relaxing a respiratory tract and a bronchial tube, wherein the apparatus is manufactured in a form of a necklace hung on the neck, and a color light in the visible light wavelength band is irradiated at the region of the Tiantu point, which is known to be useful for the prevention and treatment of human respiratory diseases, that is, a dent region at which ends of left and right clavicle meet each other below the front of the neck, for a predetermined time to induce the secretion of a material for relaxing muscles (e.g., nitrogen monoxide or the like) in muscular cells of the respiratory tract and the bronchial tube, thereby relaxing the respiratory tract and the bronchial tube.

A respiratory tract vibrator includes an air channel; the air channel is used for connecting a mouth of a user and then allowing air flow in a respiratory tract of the user to move forward via the air channel; a sound wave generator is arranged in the air channel and is used for allowing air flow to generate vibration, and then the vibration reaches the respiratory tract with the air flow as a medium. The respiratory tract vibrator communicates with the respiratory tract of the user, and then the respiratory tract of the user is in an open state; the vibration generated by the sound wave generator reaches the respiratory tract through the air flow which flows in the air channel and the respiratory tract, and then tracheas, bronchi, and alveoli of the respiratory tract are vibrated, and a physiotherapy effect can be achieved; and wastes in the deep part of the respiratory tract is eliminated, a lung is deeply cleaned, and the compliance and the elasticity of the respiratory tract can be improved.

The invention relates to a trachea cannula kit capable of obstructing bronchus under guidance of bronchoscope. The kit comprises an obstruction catheter and a tracheal catheter; the obstruction catheter comprises a catheter body; the front end of the catheter body is provided with a first cuff and a first annular cuff; the tracheal catheter comprises a tracheal catheter body, a first threaded tubeinterface, a second threaded tube interface and a second annular cuff; the front end of the tracheal catheter body is provided with a second cuff; the second annular cuff is disposed on the inner side of the tail end of the tracheal catheter body. The kit has the advantages that while effectively blocking lung bronchus on a diseased side, the kit performs lung ventilation of a healthy side; the tracheal catheter is inserted into trachea without touching bulges at the intersection of the left and right bronchus, and damage stimulation and nerve reflex of the bulges are not caused; the obstruction catheter can be quickly and accurately placed to the bronchus which needs to be blocked under the direct guidance of the bronchoscope.

The invention discloses a combined lateral-limiting-type trachea and bronchus catheter. The combined lateral-limiting-type trachea and bronchus catheter comprises a lateral-limiting-type trachea catheter and a bronchus blocking pipe, wherein a lateral opening is formed at the lower end of the lateral-limiting-type trachea catheter, and the opening direction is not coaxial with the trachea catheter and points to the side surface. The combined lateral-limiting-type trachea and bronchus catheter has the advantages that while the normal ventilation function of the trachea catheter is kept, at the upper end of the trachea catheter, the bronchus blocking pipe can be accurately and simply guided to one side through direction change by virtue of a lateral limiting part and the lateral opening at the lower end, and is easily fed into the target lateral bronchus, so that the selective use of left and right lung isolation and single lung ventilation in clinic is met. With the device, the placing and positioning of the bronchus catheter become simple, accurate and reliable.

The invention discloses a double-cavity trachea cannula with an accurate dosing function. The double-cavity trachea cannula with the accurate dosing function comprises a trachea cannula assembly and a dosing assembly; the trachea cannula assembly comprises a multi-cavity catheter, a left bronchial catheter, a right bronchial catheter, a main sleeve bag and an auxiliary sleeve bag; the main sleeve bag is arranged on the multi-cavity catheter in a sleeving mode, the auxiliary sleeve bag is arranged on the left bronchial catheter or the right bronchial catheter in a sleeving mode, and the main sleeve bag and the auxiliary sleeve bag are connected with a sealing valve through gas filled catheters correspondingly; the multi-cavity catheter is provided with three cavities, one cavity is used for dosing, one ends of the other two cavities communicate with the left bronchial catheter and the right bronchial catheter correspondingly, and the other ends of the other two cavities communicate with a breathing machine connector; and the dosing assembly comprises a medical sprayer and a filter, a discharging port of the medical sprayer is connected with a feeding port of the filter through a first catheter, and a discharging port of the filter is connected with a first cavity of the multi-cavity catheter through a second catheter. The double-cavity trachea cannula can dose to lungs on the two sides simultaneously, or dose to a lung on one side, is convenient to use, and beneficial for recovery of patients, stable and reliable.

The bronchus blocker according to the invention comprises an insertion rod and a blocking means. The blocking means is provided near one end of the insertion rod in order to be inserted by means thereof into a bronchus. The bronchus blocker furthermore comprises a support, for supporting the bronchus blocker on a bronchial branching, such as the carina. By supporting the bronchus blocker on a bronchial branching using its support, the inflated balloon only has to seal the bronchus and does not also have to keep the bronchus blocker in its position at the same time. As a result, the risk of the bronchus blocker slipping out of its position is much smaller than with the prior art.

The invention discloses an air cutting type bridge frame control balance ventilation single-cavity lung isolation catheter, and relates to the technical field of medical appliances. The air cutting type bridge frame control balance ventilation single-cavity lung isolation catheter is used for solving the problems of low safety and low balance ventilation efficiency of left and right lungs in the thoracic surgery by using other lung isolation catheters. The geometric distribution of forming holes in the catheter wall of the balance ventilation single-cavity lung isolation catheter controlled by an air cutting type bridge frame is utilized for solving the problem of risk due to easy bending of the catheter; through the geometric distribution, the catheter support intensity of the second opening hole region is enhanced through the geometric distribution. The air cutting type bridge frame control balance ventilation single-cavity lung isolation catheter comprises a main pipe tracheal catheter and a bronchial catheter, wherein the bronchial catheter communicates with one end of the main pipe tracheal catheter; the tail end of the bronchial catheter is provided with a first opening; at least two second hole forming regions with open holes are arranged on the lower end side wall of the main pipe tracheal catheter; a plurality of second hole forming regions with open holes are in the same or different transverse tangent plane or longitudinal tangent plane distribution in the three-dimensional space formed by the main pipe tracheal catheter and the bronchial catheter.

The invention discloses a visual side-guided tracheal tube member. The upper side of the visible side-guided tracheal tube member is a machine end, the lower end is a patient end, the visible side-guided tracheal tube member is provided with an air bag near the wall of the patient end, an axially closed lateral opening is arranged at the tube wall at one side of the lower end of the air bag, the opening direction of the lateral opening is perpendicular to the longitudinal axis of the chamber of the tracheal tube, and laterally directed to the side surface; the tube wall of the lateral openingis a curved lateral-bending side wall, and a micro camera is disposed in the curved lateral-bending side wall. The process of feeding the tracheal tube into the bronchus by means of the equipment canbe observed through the longitudinal micro camera on the side wall of the lateral opening by a display connected thereto. The proper position and depth of the occlusion tube in the bronchus are clearly located to meet the clinical choice and usage of left and right lung isolation and single lung ventilation. The visual side-guided tracheal tube member makes the placement and positioning of the tracheal tube simple, accurate and reliable.

The invention discloses an air-exhaust-free tracheal catheter. The air-exhaust-free tracheal catheter is characterized by comprising a tracheal catheter body, an air bag, an inflation valve and an inflation tube, wherein two ends of the tracheal catheter body are provided with a tracheal catheter connector and a tracheal catheter opening, the air bag is arranged near the tracheal catheter opening, after swelling, and the air bag is inverted-hopper-shaped, and is adaptive to the hypolarynx weasand in shape. According to the air-exhaust-free tracheal catheter, the air bag adaptive to the hypolarynx weasand in shape is designed, after swelling, the air bag completely isolates the weasand above and below the air bag, while when the weasand extubation operation is carried out, the air exhausting operation for the air bag is not needed, by utilizing the feature that the upper end of the air bag is thin and the lower end of the air bag is thick, the glottis is enlarged slowly, then the tracheal catheter is pulled out, then secretions of the pharynx oralis above the air bag and the gastroesophageal reflux contents are removed, and the pulmonary infection, bronchic blockage, pulmonary atelectasis and the like caused by the reason that the secretions of the pharynx oralis and the gastroesophageal reflux contents move downwards are eliminated; and the inverted-hopper-shaped air bag is also applicable to the main air bag of a double-cavity bronchial catheter.

The invention discloses an airway device, and a laryngeal-branch combined lung separation system based on the airway device. The system comprises: 1) a laryngeal mask type airway device, including a mask body portion defined at the distal end of the airway device, and a channel portion extending from the proximal end of the airway device to the cover portion, wherein the mask body portion can be positioned in the hypopharyngeal area of the patient to cover and seal the patient's glottis; 2) a bronchial isolation catheter used in combination with a laryngeal mask airway device. The channel portion of the laryngeal mask type airway device may include first and second channels, wherein the second channel may be inclinedly merged with the first channel near an opening near the first channel. In an exemplary embodiment, the third channel may form a gastro-pharyngeal combined channel. The bronchial isolation catheter is constructed and sized to be inserted into the first opening of the airway channel and through the second opening of the airway channel. When the laryngeal mask is located in the hypopharyngeal area of the patient, the laryngeal mask enters the left or right bronchus of the patient through the trachea.