Airway management system

Abstract

An airway management system comprising a laryngeal mask assembly (1) or a tracheal conduit assembly (2), further comprising a breathing circuit coupling assembly (3), a telescopic tube assembly (6), a connecting tube (5), and an inner tube assembly (4), wherein the breathing circuit coupling assembly (3) comprises a breathing circuit coupling (3-1) and a breathing circuit coupling end cap (3-2), and wherein the laryngeal mask conduit (1-2) of the laryngeal mask assembly (1) has at least three cavities therein, and the tracheal conduit The tracheal conduit (2-2) of the assembly (2) has four cavities, and one end of the breathing circuit fitting (3-1) is connected to the laryngeal mask fitting (1-3), or the tracheal conduit fitting (2-3), or the laryngeal mask fitting (1-3) and the inner tube fitting (4-3), or the tracheal conduit fitting (2-3) and the inner tube fitting (4-3), or the telescopic tube end fitting (6-3) and the inner tube fitting (4-3), and the other end of the breathing circuit fitting (3-1) is connected to an anesthesia machine or ventilator via a breathing line. The advantages of using this airway management system are that it reduces artificial airway resistance compared to conventional products, improves the sensitivity and accuracy of gas sampling analysis in the airway, eliminates mechanical dead space, or eliminates mechanical dead space and some physiological dead space, reduces humidity, reduces driving pressure, and protects lung function.

Description

Technical Field

[0004]

[0001] This invention relates to the technical field of clinical medical devices Regarding , in particular, and relates to an airway management system.

Background Art

[0002] Patients usually use an airway management system during the implementation of general anesthesia or the treatment process in an Intensive Care Unit (ICU). The airway management system usually includes an anesthesia mask, a laryngeal mask, a tracheal tube, a connecting tube, a telescopic tube, an artificial nose, a breathing circuit, etc. The airway management system can realize functions such as general anesthesia, respiratory support, detection of inhalation or exhalation components, transportation of oxygen and anesthetic gases, and discharge of respiratory exhaust gases. There are two types of patients' breathing modes: spontaneous breathing and mechanical controlled breathing.

[0003] Affected by the patient's own physique, the drugs used, and underlying diseases, there are significant differences in the moisture volume, breathing frequency, and minute ventilation volume of patients with spontaneous breathing. For patients with mechanical controlled breathing, on the premise of meeting gas exchange, the moisture volume, breathing frequency, minute ventilation volume, and airway pressure should be selected to be as small as possible. When inhaling, the patient inhales some exhaled air each time, and the same patient always experiences two breathing modes.

[0004] Conventional airway management systems have a shared space for inhaled and exhaled air and cannot accommodate the diverse breathing modes of patients. When the moisture content of the patient's spontaneous respiration is high, airway resistance increases, and when the moisture content of the patient's spontaneous respiration is low, or when protective mechanically controlled ventilation is performed, ineffective ventilation increases, leading to more repetition and affecting gas exchange. Patients with severe pneumonia require invasive ventilation because the increase in physiological dead space reduces blood oxygen content and increases blood carbon dioxide content, requiring tracheal intubation followed by connection to a ventilator via a breathing circuit. Causes of increased physiological dead space in patients include (1) inflammatory exudates filling the alveoli, (2) dysfunction of the ventilation-perfusion ratio in the supine position, and (3) increased physiological dead space due to mechanical ventilation. The conventional solution is prone ventilation, which reduces the patient's physiological dead space and corrects the dysfunction of the ventilation-perfusion ratio. Prone position ventilation is not clinically common because it has drawbacks such as (1) a lack of medical care resources, (2) an increased risk of airway obstruction, and (3) an increased risk of pressure ulcers and facial injuries in patients.

[0005] Conventional intubation-type laryngeal masks are limited by the inner diameter of the ventilator, allowing the insertion of only tracheal conduits with an inner diameter of 7.0 mm or less. In China, female patients should be selected for tracheal conduits with an average inner diameter of 7.5 mm, and male patients should be selected for tracheal conduits with an average inner diameter of 8.5 mm. Selecting tracheal conduits with an inner diameter of 7.0 mm or less clinically poses the following risks: (1) Increases artificial airway resistance and increases respiratory and circulatory complications. (2) Increases the airbag pressure in the tracheal conduit, causing mucosal damage to the tracheal wall. (3) Limits the manipulation of the ventilator cavity through the tracheal conduit, including insertion of bronchial occluders, and examination and treatment under fibrobronchoscopy.

[0006] Conventional gas sampling tubes are positioned within the mechanical dead space of the artificial ventilation system, and their position is not fixed. Furthermore, the sampling point is far from the alveoli, and interference from exhaled gases from the patient causes delays and inaccuracies in the values ​​obtained from sampling analysis.

[0007] The outer wall of conventional inner tubes is smooth and cylindrical, and after being inserted into the lumen of the laryngeal mask and tracheal conduit, it easily adheres tightly, causing lumen obstruction between the inner and outer tubes.

[0008] Conventional connecting pipes have an equal diameter structure, invention breathing circuit connection hand disease It cannot be connected to the other end.

[0009] Conventional respiratory circuit connectors are used in L-shape, Y-shape, or combination forms and are not applicable to the present invention. [Overview of the project]

[0010] Patients typically use airway management systems during general anesthesia or treatment in an intensive care unit (ICU). Airway management system These are generally anesthesia masks. Laryngeal mask 、 tracheal conduit It is equipped with connecting tubes, expandable tubes, an artificial nose, and a breathing circuit. The airway management system enables functions such as general anesthesia, respiratory support, detection of inhaled or exhaled components, delivery of oxygen and anesthetic gases, and removal of respiratory exhaust gases. There are two types of patient breathing modes: spontaneous breathing and mechanically controlled breathing.The patient end of the gas sampling cavity is positioned close to the patient end of the conduit, resulting in more sensitive and accurate sampling analysis. The patient end of the laryngeal suction cavity of the laryngeal mask assembly or tracheal conduit assembly and the laryngeal suction cavity are located dorsally to the patient, with the patient end of the laryngeal suction cavity close to the patient end of the conduit. The laryngeal suction cavity can also be used as a backup gas sampling cavity by aspirating secretions near the patient's glottis. The gas sampling cavity and laryngeal suction cavity are fixedly combined and symmetrically positioned to ensure continuity and reliability of gas sampling analysis. The laryngeal mask connector can be connected to the patient end of the expandable tube assembly. When the expandable tube assembly is fully extended, the inner tube assembly can be inserted through the laryngeal mask assembly and the expandable tube assembly. The patient end of the inner tube assembly is located above the glottis, inside the mask body of the laryngeal mask assembly, and aligned with the patient end of the laryngeal mask conduit, eliminating mechanical dead space, preventing the patient from inhaling their own exhaled gases, and improving the sensitivity and accuracy of gas sampling analysis results in the patient's airway. As the expandable tube assembly is gradually shortened, the patient end of the inner tube assembly moves towards the patient's lungs, enters the trachea via the glottis, and when the expandable tube assembly is shortened to its initial state, the patient end of the inner tube assembly reaches the trachea, eliminating all mechanical dead space and some physiological dead space. Both the inner tube connector and the expandable tube end connector are connected to the patient end of the breathing circuit connector, which is connected to an anesthesia machine or ventilator via the breathing tube.

[0011] Book First aspect of the invention teeth, The aim is to provide an airway management system that solves the technical challenge of the difficulty in eliminating conventional mechanical dead space.

[0012] An airway management system provided according to a first aspect of the present invention comprises a laryngeal mask assembly and an inner tube assembly, the inner tube assembly comprising an inner tube body, the inner tube body having a third ventilation cavity, the laryngeal mask assembly comprising a mask body and a laryngeal mask conduit having one end communicating with the mask body, the laryngeal mask conduit having a first ventilation cavity, the first ventilation cavity being used for insertion of the inner tube assembly, and after the inner tube assembly is inserted, one of the first ventilation cavity and the third ventilation cavity forms an inspiratory cavity and the other forms an expiratory cavity. The patient end of the inner tube assembly is located inside the mask body and is configured to align with the patient end of the laryngeal mask conduit, and the patient end of the inner tube assembly may be further configured to enter the patient's trachea through the patient's glottis.

[0013] The beneficial effects of the airway management system of the present invention are as follows:

[0014] The inner tube assembly is inserted via the laryngeal mask assembly, and both the inner tube fitting and the laryngeal mask fitting are connected to the patient end of the breathing circuit fitting. The breathing circuit fitting is then connected to the anesthesia machine or ventilator via the breathing tube, thereby reducing or eliminating mechanical dead space and preventing the patient from inhaling their own exhaled exhaust gases.

[0015] Eliminating mechanical dead space and some physiological dead space has clinical significance for patients requiring ventilation with low moisture content and low drive pressure. Patients requiring low moisture content and low drive pressure ventilation include, but are not limited to, (1) pediatric surgical patients, (2) endoscopic surgical patients requiring carbon dioxide inflation, (3) thoracic surgical patients, (4) patients with lung disease undergoing general anesthesia, (5) patients undergoing surgery involving large amounts of blood transfusions and fluids, (6) patients undergoing prolonged surgery, (7) patients with chronic obstructive pulmonary disease (COPD) or acute respiratory distress syndrome (ARDS), and (8) patients with severe COVID-19 requiring invasive ventilation treatment.

[0016] This invention provides a good therapeutic effect for ARDS patients in the supine position, and the therapeutic effect is even better when combined with prone position ventilation therapy.

[0017] Laryngeal mask assemblies of different specifications can be used in combination with inner tube assemblies of different specifications to meet the needs of patients with different glottal areas and different respiratory parameter settings.

[0018] In one embodiment, of the ventilation cavities formed after the inner tube assembly is inserted into the first ventilation cavity and the third ventilation cavity, one forms an inhalation cavity and the other forms an exhalation cavity, or Of the portion of the first ventilation cavity into which the inner tube assembly is inserted and the third ventilation cavity, one forms an inspiratory cavity and the other forms an expiratory cavity.

[0019] In one embodiment, the laryngeal mask assembly further comprises a laryngeal mask fitting, the other end of the laryngeal mask conduit being connected to the laryngeal mask fitting, the inner tube assembly further comprises an inner tube fitting connected to the inner tube body, the airway management system further comprises a breathing circuit fitting assembly, the breathing circuit fitting assembly comprising a breathing circuit fitting, a breathing circuit fitting end cap and a Luer fitting, one end of the breathing circuit fitting being connected to the laryngeal mask fitting or to the laryngeal mask fitting and the inner tube fitting, and the other end of the breathing circuit fitting being configured to be connected to an anesthesia machine or respiratory machine via a breathing tube. The breathing circuit connector comprises a patient end and an equipment end, the patient end of the breathing circuit connector comprises a patient end internal connector and a patient end external connector, the patient end external connector is used to connect to the laryngeal mask connector and the patient end internal connector is used to connect to the internal tube connector.

[0020] The laryngeal mask connector can be connected to the patient end of the breathing circuit connector, at which point the tip cap of the breathing circuit connector is positioned on the first internal connector at the device end of the breathing circuit connector, the inner tube body is inserted through the second internal connector at the device end, the inner tube connector of the inner tube assembly and the external connector at the device end of the breathing circuit connector are connected to the patient end of the breathing duct, the device end of the breathing duct is connected to an anesthesia machine or ventilator, and as the inner tube body is gradually inserted, the mechanical dead space in the airway management system gradually decreases, and when the patient end of the inner tube assembly is positioned inside the mask body of the laryngeal mask assembly and aligned with the patient end of the laryngeal mask conduit, the mechanical dead space can be eliminated, at which point the patient end of the inner tube assembly enters the patient's trachea through the patient's glottis, eliminating all mechanical dead space and some physiological dead space.

[0021] The inner diameters of both the laryngeal mask conduit and laryngeal mask fitting are larger than those of conventional products, reducing artificial airway resistance and allowing for the insertion of larger outer diameter diagnostic and therapeutic devices. Furthermore, larger outer diameter conventional tracheal conduits can be inserted via the laryngeal mask conduit and fitting. The sampling point of the laryngeal mask assembly is close to the patient end of the conduit, maximizing the proximity of the sampling point to the alveoli. This results in more sensitive and accurate sampling analysis, with sampling analysis values ​​being closer to and showing better correlation with arterial blood gas analysis values.

[0022] In one embodiment, the airway management system further comprises an expandable tube assembly, the expandable tube assembly comprising an expandable tube patient end joint, an expandable tube device end joint, and an expandable tube body, wherein the expandable tube patient end joint is connected to one end of the expandable tube body, the expandable tube device end joint is connected to the other end of the expandable tube body, the expandable tube patient end joint is configured to be connected to the laryngeal mask joint, the inner tube assembly is configured to be inserted via the laryngeal mask conduit, the laryngeal mask joint, and the expandable tube assembly, and the expandable tube device end joint and the inner tube joint are used to connect to the patient end of the breathing circuit joint. When the telescopic tube assembly is fully extended, the patient end of the inner tube assembly is positioned over the patient's glottis, and as the telescopic tube assembly is gradually retracted, the patient end of the inner tube assembly moves into the patient's lungs, passes through the patient's glottis, and enters the patient's trachea.

[0023] The laryngeal mask connector can be connected to the patient end of the expandable tube assembly. When the expandable tube assembly is fully extended, the inner tube assembly can be inserted through the laryngeal mask assembly and the expandable tube assembly. The patient end of the inner tube assembly is located above the glottis, inside the mask body of the laryngeal mask assembly, and aligned with the patient end of the laryngeal mask conduit. Both the inner tube connector and the expandable tube end are connected to the patient end of the breathing circuit connector. The breathing circuit connector is connected to an anesthesia machine or ventilator via a breathing tube, eliminating mechanical dead space, preventing the patient from inhaling their own exhaled gases from the laryngeal mask assembly, and improving the sensitivity and accuracy of gas sampling analysis results in the patient's airway. As the expandable tube assembly is gradually shortened, the patient end of the inner tube assembly moves toward the patient's lungs, passes through the glottis and enters the trachea. When the expandable tube assembly is shortened to its initial state, the patient end of the inner tube assembly reaches the patient's trachea, eliminating all mechanical dead space and some physiological dead space. The inner tube fitting and the expandable tube instrument end fitting are then connected together to the patient end of the breathing circuit fitting, which is connected to the anesthesia machine or ventilator via the breathing tube.

[0024] After the inner tube assembly is inserted via the laryngeal mask assembly and expandable tube assembly, the patient end of the inner tube assembly reaches the patient's trachea. Compared to conventional laryngeal mask products, the third ventilation cavity can be selected as the inspiratory passage, and the gap between the inner tube body and the trachea, glottis, and laryngeal mask conduit can be selected as the expiratory passage, ensuring smooth breathing, reducing airway pressure, lowering the risk of aspiration, eliminating the risk of airway obstruction through the ventilation and positioning action of the inner tube assembly, and increasing the stability of the artificial airway. Compared to conventional tracheal conduit products, it eliminates the risk of mucosal ischemic necrosis caused by compression of the tracheal mucosa after the airbag is inflated.

[0025] In one embodiment, the telescopic tube assembly further includes an annular protrusion and a stopper. The annular protrusion is respectively provided on the outer walls of the telescopic tube patient end joint and the telescopic tube device end joint. The stopper restricts the position of the telescopic tube assembly. When the telescopic tube assembly extends until it is in a fully open state, the stopper is located between the annular protrusions.

[0026] The laryngeal mask joint can be connected to the patient end of the telescopic tube assembly. When the telescopic tube assembly extends until it is in a fully open state, as an optional form, ringA stopper is positioned between the projections, allowing the inner tube assembly to be inserted through the laryngeal mask assembly and the expandable tube assembly. The patient end of the inner tube assembly is located above the patient's glottis, inside the mask body of the laryngeal mask assembly, and aligned with the patient end of the laryngeal mask conduit. Both the inner tube joint and the expandable tube instrument end joint are connected to the patient end of the breathing circuit joint. The breathing circuit joint is connected to an anesthesia machine or ventilator via the breathing tube, eliminating mechanical dead space, preventing the patient from inhaling their own exhaled gases, and improving the sensitivity and accuracy of gas sampling analysis within the patient's airway. The annular projections of the expandable tube assembly of this application are provided on the outer walls of the expandable tube patient end joint and the expandable tube instrument end joint, respectively, and the stopper is, Shin This is for positioning the retractable tube assembly, and when the expansion tube assembly is extended to its fully open state, vinegar Toppa is ring It is positioned between the ridges to prevent the telescopic assembly from shortening. In this way, shortening of the telescopic assembly can be prevented from damaging the patient end of the inner tube assembly to the patient's glottis and trachea. After the stopper is removed, as the telescopic assembly gradually shortens, Inside As the patient end of the tube assembly moves toward the patient's lungs, passes through the patient's glottis and enters the trachea, and the expandable tube assembly is shortened to its initial state, the patient end of the inner tube assembly reaches into the patient's trachea, eliminating all mechanical dead space and some physiological dead space, and both the inner tube fitting and the expandable tube instrument end fitting are connected to the patient end of the breathing circuit fitting, which is then connected to the anesthesia machine or ventilator via the breathing tube.

[0027] throat Head mask fitting teeth , at the patient end of the respiratory circuit connector contact It can be connected, and at this time the respiratory circuit connector tip cap is machine It is placed at the first internal joint at the end of the vessel, machine Via the second internal joint at the end of the vessel Inside The main body of the pipe is inserted, Inside Pipe fittings and machine The external joints at the end of the device are each part of the breathing tube. After Connect to an anesthesia machine or ventilator, The aforementionedConnect the laryngeal mask connector of the laryngeal mask assembly to the patient end of the breathing circuit connector. machine Via the second inner joint at the end of the vessel Inside As the tube body is inserted and the inner tube body is gradually inserted, the mechanical dead space within the airway management system gradually decreases, and when the patient end of the inner tube assembly is positioned within the mask body of the laryngeal mask assembly and aligned with the patient end of the laryngeal mask conduit, the mechanical dead space can be eliminated. At this time, the patient end of the inner tube assembly enters the patient's trachea through the patient's glottis, eliminating all mechanical dead space and some physiological dead space. ru. This method allows for continuous adjustment of the dead space volume of this airway management system, which is larger than that of conventional products, until all mechanical dead space and some physiological dead space are eliminated, and can be applied to the treatment of patients with excessive ventilation.

[0028] In one embodiment, a first gas sampling cavity and a first laryngeal suction cavity are further provided within the laryngeal mask conduit.

[0029] In one embodiment, a drainage cavity is further provided within the laryngeal mask conduit.

[0030] In one embodiment, a video element cavity is further provided within the laryngeal mask conduit.

[0031] In one embodiment, a spare cavity is provided within the laryngeal mask conduit.

[0032] In one embodiment, the patient end of the first gas sampling cavity and the patient end of the first laryngeal suction cavity are close to the patient end of the laryngeal mask conduit, and the first gas sampling cavity and the first laryngeal suction cavity within the laryngeal mask conduit are fixed together for use.

[0033] throat Head mask assembly 1 Patient end and 1 The gas sampling cavity is located on the ventral side of the patient. 1 The patient end of the gas sampling cavity is close to the patient end of the conduit, which can improve the sensitivity and accuracy of gas sampling analysis within the patient's airway. 1 The patient end of the laryngeal suction cavity and the laryngeal suction cavity are located on the dorsal side of the patient. 1 The patient end of the laryngeal suction cavity is Laryngeal mask Close to the patient end of the conduit, 1The laryngeal suction cavity can aspirate secretions from the glottis area of ​​the patient and can also be used as a backup gas sampling cavity. 1 Patient end of gas sampling cavity, 1 Gas sampling cavity and 1 Patient end of laryngeal suction cavity, 1 The laryngeal suction cavity is fixed, combined, and symmetrically positioned to ensure the continuity and reliability of gas sampling analysis.

[0034] The first gas sampling cavity of the laryngeal mask assembly may be located inside the laryngeal mask conduit or independently of the conduit. The first laryngeal aspiration cavity and the first gas sampling cavity are symmetrically positioned and have the same structure, with the patient end of the first laryngeal aspiration cavity and the patient end of the first gas sampling cavity being close to the patient end of the conduit, symmetrically positioned, and having the same structure. Laryngeal secretions can be aspirated through the first laryngeal aspiration cavity, and it can also be used as a backup gas sampling cavity after the gas sampling cavity becomes clogged, ensuring the continuity and reliability of gas sampling analysis.

[0035] A second aspect of the present invention aims to provide an airway management system that solves the technical problem of difficulty in eliminating mechanical dead space.

[0036] An airway management system provided according to a second aspect of the present invention comprises a tracheal conduit assembly and an inner tube assembly, wherein the inner tube assembly comprises an inner tube body, the inner tube body is provided with a third ventilation cavity, the tracheal conduit assembly comprises a tracheal conduit, the tracheal conduit is provided with a second ventilation cavity, the second ventilation cavity is used for insertion of the inner tube assembly, after the inner tube assembly is inserted, one of the second ventilation cavity and the third ventilation cavity forms an inspiratory cavity and the other forms an expiratory cavity, the tracheal conduit has the same inner diameter, the patient end of the inner tube assembly is configured to align with the patient end of the tracheal conduit, and the patient end of the inner tube assembly may be configured to enter the patient's trachea via the patient end of the tracheal conduit.

[0037] The beneficial effects of the airway management system of the present invention are as follows:

[0038] The internal tube assembly is inserted via the tracheal conduit assembly, and both the internal tube fitting and the tracheal conduit fitting are connected to the patient end of the respiratory circuit fitting. The respiratory circuit fitting is then connected to the anesthesia machine or ventilator via the respiratory tube, thereby reducing or eliminating mechanical dead space and preventing the patient from inhaling their own exhaled exhaust gases.

[0039] Tracheal conduit assemblies of different specifications can be used in combination with inner tube assemblies of different specifications to meet the needs of patients with different glottal areas and different respiratory parameter settings.

[0040] A third aspect of the present invention aims to provide an airway management system that solves the technical problem of difficulty in eliminating mechanical dead space.

[0041] An airway management system provided according to a third aspect of the present invention comprises a tracheal conduit assembly and an inner tube assembly, wherein the inner tube assembly comprises an inner tube body, the inner tube body is provided with a third ventilation cavity, the tracheal conduit assembly comprises a tracheal conduit, the tracheal conduit is provided with a second ventilation cavity, the second ventilation cavity is used for insertion of the inner tube assembly, and after the inner tube assembly is inserted, one of the second ventilation cavity and the third ventilation cavity forms an inspiratory cavity and the other forms an expiratory cavity, the inner diameter of the tracheal conduit is designed such that the inner diameter located next to the patient's glottis during use is smaller than the inner diameter located ahead of the patient's glottis during use, and the patient end of the inner tube assembly is configured to be located at the patient end of the larger inner diameter portion of the tracheal conduit having an unequal diameter structure.

[0042] The beneficial effects of the airway management system of the present invention are as follows:

[0043] The inner diameter of the tracheal conduit of the present invention may be designed such that the inner diameter of the section immediately following the patient's glottis is smaller than the inner diameter of the section immediately preceding the patient's glottis. This can help avoid damage to the patient's glottis and trachea, improve patient comfort, and reduce complications.

[0044] In one embodiment, of the ventilation cavities formed after the inner tube assembly is inserted into the second ventilation cavity and the third ventilation cavity, one forms an inhalation cavity and the other forms an exhalation cavity, or Of the portion of the second ventilation cavity into which the inner tube assembly is inserted and the third ventilation cavity, one forms an inspiratory cavity and the other forms an expiratory cavity.

[0045] In one embodiment, the tracheal conduit assembly further comprises a tracheal conduit joint, the inner tube assembly further comprises an inner tube joint connected to the inner tube body, the airway management system further comprises a respiratory circuit joint assembly, the respiratory circuit joint assembly comprises a respiratory circuit joint, one end of the respiratory circuit joint is connected to the tracheal conduit joint, or is connected to the tracheal conduit joint and the inner tube joint, and the other end of the respiratory circuit joint is configured to be connected to an anesthesia machine or respiratory machine via a respiratory tube. The respiratory circuit connector comprises a patient end and an equipment end, the patient end of the respiratory circuit connector comprises a patient end internal connector and a patient end external connector, the patient end external connector is used to connect to the tracheal conduit connector and the patient end internal connector is used to connect to the internal tube connector.

[0046] The inner diameters of both the tracheal conduit and tracheal conduit fittings of this invention are larger than those of conventional products, reducing artificial airway resistance and allowing for the insertion of diagnostic and therapeutic devices with larger outer diameters. The sampling point of the tracheal conduit assembly is close to the patient end of the conduit, and the sampling point can be brought as close as possible to the alveoli, resulting in more sensitive and accurate sampling analysis, and sampling analysis values ​​that are closer to and have a good correlation with arterial blood gas analysis values.

[0047] In one embodiment, the device end of the respiratory circuit joint is provided with a first internal device end joint, a second internal device end joint, and an external device end joint, and the device end of the respiratory circuit joint is provided with three passages: a first internal device end passage, a second internal device end passage, and an external device end passage, and the patient end of the respiratory circuit joint is provided with a patient end internal passage and a patient end external passage, the first internal device end passage and the second internal device end passage are connected to the patient end internal passage, the external device end passage is connected to the patient end external passage, the patient end internal passage and the patient end external passage use a coaxial internal and external double passage structure, and the first internal device end joint and the external device end joint or the second internal device end joint and the external device end joint are each connected to the anesthesia machine or the respiratory machine via the respiratory tube.

[0048] After the laryngeal mask fitting or tracheal conduit fitting is connected to the patient end of the respiratory circuit fitting assembly, the respiratory circuit fitting assembly can be rotated in any direction within its circumferential range, facilitating the insertion and removal of the laryngeal mask fitting of the laryngeal mask assembly or the tracheal conduit fitting of the tracheal conduit assembly from the patient end of the respiratory circuit fitting assembly, thereby facilitating the placement of the respiratory pathway.

[0049] The respiratory circuit coupling assembly, by employing a double-passage design at the patient end and a triple-passage design at the instrument end, can ensure that the laryngeal mask assembly or tracheal conduit assembly is inserted into the patient, and after the laryngeal mask coupling of the laryngeal mask assembly or the tracheal conduit coupling of the tracheal conduit assembly is connected to the patient end of the respiratory circuit coupling assembly, the inner tube assembly is positioned under the guidance of a fibrobronchoscope via the instrument end second inner coupling of the respiratory circuit coupling without interrupting low dead-space airflow. The patient end of the first Luer coupling of the respiratory circuit coupling assembly of this application may be connected to a gas sampling tube, which can collect and detect gas in the laryngeal mask conduit, tracheal conduit, supraglottic or intratracheal.

[0050] In one embodiment, the respiratory circuit joint assembly further comprises a respiratory circuit joint tip cap, the tip of the second internal joint at the device end is provided with the retractable respiratory circuit joint tip cap, and the respiratory circuit joint tip cap is configured to be connectable to the first internal joint at the device end.

[0051] The laryngeal mask connector is connected to the patient end of the breathing circuit connector, or the tracheal conduit connector of a tracheal conduit assembly with an equal diameter structure is connected to the patient end of the breathing circuit connector, or the tracheal conduit connector of a tracheal conduit assembly with an unequal diameter structure is connected to the patient end of the breathing circuit connector, in which case the end cap of the breathing circuit connector is placed on the first internal connector at the device end.

[0052] The tracheal conduit fitting can be connected to the patient end of the respiratory circuit fitting, at which point the tip cap of the respiratory circuit fitting is placed on the first internal fitting at the device end, the inner tube body is inserted via the second internal fitting at the device end, and the inner tube fitting and the external fitting at the device end are connected to the patient end of the respiratory duct, respectively, and the device end of the respiratory duct is connected to an anesthesia machine or a ventilator. The tracheal conduit fitting of a tracheal conduit assembly with an equal diameter structure is connected to the patient end of the respiratory circuit fitting, and after the inner tube body is inserted via the second internal fitting at the device end, as the inner tube body is gradually inserted, the mechanical dead space in the airway management system gradually decreases, and when the patient end of the inner tube assembly and the patient end of the tracheal conduit are aligned, the mechanical dead space is eliminated. The patient end of the inner tube assembly is then inserted and enters the patient's trachea, eliminating all mechanical dead space and some physiological dead space.

[0053] The tracheal conduit fitting of the tracheal conduit assembly with an unequal diameter structure is connected to the patient end of the respiratory circuit fitting, and the inner tube body is inserted through the device end second inner fitting. As the inner tube body is gradually inserted, the mechanical dead space within the airway management system gradually decreases, and if the patient end of the inner tube assembly is located at the patient end of the large inner diameter portion of the tracheal conduit with an unequal diameter structure, a portion of the mechanical dead space can be eliminated.

[0054] In one embodiment, the breathing circuit joint assembly further comprises a first Luer joint, the first Luer joint being connected to the center of the end cap of the breathing circuit joint.

[0055] In one embodiment, the airway management system further comprises a connecting tube, the connecting tube having an unequal diameter structure, the connecting tube comprising a connecting tube body, and when performing anesthesia induction in a clinical setting, one end of the connecting tube body is configured to be connected to the patient end of the breathing circuit joint, and the other end of the connecting tube body is configured to be connected to an anesthesia mask.

[0056] In one embodiment, the connecting pipe further comprises a second Luer fitting, the second Luer fitting being configured to connect to the gas sampling pipe of the monitor.

[0057] The connecting tube of this invention is designed with an unequal diameter structure, and the second Luer joint of the connecting tube can be used as a gas sampling point during anesthesia induction and anesthesia maintenance. The patient end of the connecting tube can be connected to conventional masks, conventional laryngeal masks, conventional tracheal conduits, the laryngeal mask assembly of this invention, the tracheal conduit assembly of this invention, the laryngeal mask assembly and inner tube assembly of this invention, and the tracheal conduit assembly and inner tube assembly of this invention. The mechanical end of the connecting tube is connected to the patient end of the respiratory circuit connector assembly. After connection, the mechanical dead space can be increased, and the induction phase of general anesthesia and excessive ventilation can be treated. human Applies to this.

[0058] In one embodiment, the outer wall of the inner tube body is provided with a plurality of protrusions, which are used to position the inner tube body relative to the first ventilation cavity or the second ventilation cavity.

[0059] Book invention of InsideThe outer wall of the tube body has multiple symmetrically designed projections along its axial direction. After insertion into the ventilation cavity of the laryngeal mask conduit or tracheal conduit, the projections support the inner tube body, ensuring it is positioned at the axial center of the inserted ventilation cavity and guaranteeing a smooth lumen of the ventilation cavity between the inner tube body and the laryngeal mask conduit or tracheal conduit. The inner tube assembly uses a removable structure, allowing for the selection of inner tube assemblies with different inner diameters, outer diameters, and lengths depending on the anatomical features of the patient's laryngotrachea and clinical use needs.

[0060] In one embodiment, a second laryngeal suction cavity, a second gas sampling cavity, and an airbag air filling cavity are further provided within the tracheal conduit.

[0061] In one embodiment, the patient end of the second gas sampling cavity and the patient end of the second laryngeal suction cavity are close to the patient end of the tracheal conduit, and the second gas sampling cavity and the second laryngeal suction cavity are fixed together for use.

[0062] The patient end of the second gas sampling cavity of the tracheal conduit assembly and the gas sampling cavity are located ventrally to the patient. The patient end of the second gas sampling cavity is close to the patient end of the conduit, which can improve the sensitivity and accuracy of gas sampling analysis within the patient's airway. The patient end of the second laryngeal suction cavity of the tracheal conduit assembly and the laryngeal suction cavity are located dorsally to the patient, and the patient end of the second laryngeal suction cavity is close to the patient end of the conduit. The second laryngeal suction cavity can aspirate secretions near the patient's glottis and can also be used as a backup gas sampling cavity. The patient end of the second gas sampling cavity, the patient end of the second gas sampling cavity and the second laryngeal suction cavity, and the second laryngeal suction cavity are fixedly combined and symmetrically arranged to ensure the continuity and reliability of gas sampling analysis.

[0063] Book invention of air Pipe and conduit assembly 2nd Gas sampling cavity teeth, It may be installed inside the tracheal conduit or independently from the conduit, and is convenient for product design, research and development, and production. [Brief explanation of the drawing]

[0064] The above and other purposes, features, and advantages of the exemplary embodiments of this application will be better understood by referring to the drawings and reading the detailed description below. In the drawings, some embodiments of this application are shown illustratively, not limitingly.

[0065] In drawings, identical or corresponding reference numerals indicate identical or corresponding parts.

[0066] [Figure 1] This is a schematic diagram illustrating the assembly of the laryngeal mask assembly and inner tube assembly of the present invention. [Figure 2] This is a schematic diagram of the structure of the laryngeal mask assembly of Embodiment 1 of the present invention. [Figure 3] This is a plan view of Figure 1. [Figure 3a] Figure 3 is a schematic cross-sectional view of line AA. [Figure 4] This is a schematic diagram of the internal pipe assembly of the present invention. [Figure 4a] Figure 4 is a schematic cross-sectional view of the EE line. [Figure 5] This is an assembly structure diagram of the laryngeal mask assembly, inner tube assembly, and respiratory circuit joint assembly of the present invention. [Figure 6] This is a diagram illustrating the connection and assembly structure of the laryngeal mask assembly and the respiratory circuit joint assembly of the present invention. [Figure 7] This is a schematic diagram of the structure of the respiratory circuit joint assembly of the present invention. [Figure 8] This is a plan view of Figure 7. [Figure 9] Figure 7 is a schematic cross-sectional view of line BB. [Figure 10] Figure 8 is a schematic cross-sectional view of the CC line. [Figure 11] Figure 10 is a schematic cross-sectional view of the DD line. [Figure 12] This is a schematic diagram illustrating the assembly of the laryngeal mask assembly, inner tube assembly, and expansion tube assembly in its initial state according to the present invention. [Figure 13] This is a schematic diagram illustrating the assembly of the laryngeal mask assembly, inner tube assembly, and telescopic tube assembly in the fully open state according to the present invention. [Figure 14] This is a schematic diagram of the expansion joint assembly in its initial state. [Figure 15] This is a schematic diagram of the assembly of the expansion joint assembly of the present invention when it is in the fully open state. [Figure 15a] This is a schematic diagram of the structure of an expansion joint assembly with a stopper according to the present invention. [Figure 16] This is a schematic diagram illustrating the assembly of the laryngeal mask assembly, inner tube assembly, respiratory circuit joint assembly, and expansion tube assembly of the present invention. [Figure 17] This is a schematic diagram of the structure of Embodiment 2 of the present invention. [Figure 17a] Figure 17 is a schematic cross-sectional view of the FF line. [Figure 18] This is a schematic diagram of the structure of Embodiment 3 of the present invention. [Figure 18a] Figure 18 is a schematic cross-sectional view of the GG line. [Figure 19] This is a schematic diagram of the tracheal conduit assembly and inner tube assembly of Embodiment 4 of the present invention. [Figure 19a] Figure 19 is a schematic cross-sectional view of the HH line. [Figure 19b] Figure 19 is a schematic cross-sectional view of line II. [Figure 19c] This is a view from arrow m in Figure 19. [Figure 20] Figure 19 is a plan view. [Figure 21] This is a schematic diagram illustrating the assembly of the tracheal conduit assembly, inner tube assembly, and respiratory circuit joint assembly according to Embodiment 4 of the present application. [Figure 22] This is a schematic diagram of the tracheal conduit assembly and inner tube assembly of Embodiment 5 of the present invention. [Figure 22a] Figure 22 is a schematic diagram of the JJ line cross-section. [Figure 22b] Figure 22 is a schematic cross-sectional view of the KK line. [Figure 22c] Figure 22 is a schematic cross-sectional view of the LL line. [Figure 23] This is a plan view of Figure 22. [Figure 24] This is a schematic diagram illustrating the assembly of the tracheal conduit assembly, inner tube assembly, and respiratory circuit joint assembly according to Embodiment 5 of the present application. [Figure 25] This is a schematic diagram of the structure of the connecting pipe of the present invention. [Figure 25a] This is a plan view of Figure 25. [Modes for carrying out the invention]

[0067] To further clarify the purpose, technical proposal and advantages of this application, the application will be described in more detail below with reference to examples and drawings. The examples described are only a selection of examples of this application, not all examples. All other examples obtained by those skilled in the art without creative work based on the examples of this application are within the scope of protection of this application. It should be understood that the specific embodiments described herein are for illustrative purposes only and do not limit this application.

[0068] In this specification, any description referring to terms such as “one embodiment,” “several embodiments,” “example,” “specific example,” or “several examples” means that the specific features, structures, materials, or performance described with reference to such embodiment or example are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or performance described may be combined in an appropriate manner in any one or more embodiments or examples. Notwithstanding that, a person skilled in the art may combine different embodiments or examples and features of different embodiments or examples described herein, provided that they do not conflict with each other.

[0069] Furthermore, terms such as "first," "second," "third," and "fourth" are for descriptive purposes only and should not be understood as indicating or suggesting relative importance, or implicitly indicating the number of technical features described. Thus, features limited by "first," "second," "third," and "fourth" may explicitly or implicitly include at least one such feature. In the description of this application, "plural" means two or more unless otherwise specified.

[0070] As shown in Figures 1 to 4a, the airway management system provided by the embodiment of the present application comprises a laryngeal mask assembly 100 and an inner tube assembly 400, the inner tube assembly 400 comprises an inner tube body 401, the inner tube body 401 is provided with a third ventilation cavity 402, the laryngeal mask assembly 100 comprises a mask body 101 and a laryngeal mask conduit 102 with one end communicating with the mask body 101, the laryngeal mask conduit 102 is provided with a first ventilation cavity 106, the first ventilation cavity 106 is used for insertion of the inner tube assembly 400, after the inner tube assembly 400 is inserted, one of the first ventilation cavity 106 and the third ventilation cavity 402 forms an inspiratory cavity and the other forms an expiratory cavity. The patient end of the inner tube assembly 400 is located inside the mask body 101 and is configured to align with the patient end of the laryngeal mask conduit 102. The patient end of the inner tube assembly 400 can also be configured to enter the patient's trachea via the patient's glottis.

[0071] The inner tube assembly 400 is inserted through the laryngeal mask assembly 100, and both the inner tube connector 403 and the laryngeal mask connector 103 are connected to the patient end of the breathing circuit connector 310, and the breathing circuit connector 310 is connected to the anesthesia machine or ventilator via the breathing tube, thereby reducing or eliminating mechanical dead space and preventing the patient from inhaling their own exhaled exhaust gases.

[0072] Eliminating mechanical dead space and some physiological dead space has clinical significance for patients requiring ventilation with low moisture content and low drive pressure. Patients requiring low moisture content and low drive pressure ventilation include, but are not limited to, (1) pediatric surgical patients, (2) endoscopic surgical patients requiring carbon dioxide inflation, (3) thoracic surgical patients, (4) patients with lung disease undergoing general anesthesia, (5) patients undergoing surgery involving large amounts of blood transfusions and fluids, (6) patients undergoing prolonged surgery, (7) patients with chronic obstructive pulmonary disease (COPD) or acute respiratory distress syndrome (ARDS), and (8) patients with severe COVID-19 requiring invasive ventilation treatment.

[0073] This invention provides a good therapeutic effect for ARDS patients in the supine position, and the therapeutic effect is even better when combined with prone position ventilation therapy.

[0074] The laryngeal mask assemblies 100 of different specifications can be used in combination with inner tube assemblies 400 of different specifications to meet the needs of patients with different glottal areas and different respiratory parameter settings.

[0075] As shown in Figures 1 to 4a, selectively, one of the ventilation cavities formed after the inner tube assembly 400 is inserted into the first ventilation cavity 106 and the third ventilation cavity 402 forms an inspiratory cavity and the other forms an expiratory cavity, or Of the portion of the first ventilation cavity 106 into which the inner tube assembly 400 is inserted and the third ventilation cavity 402, one forms an inspiratory cavity and the other forms an expiratory cavity.

[0076] As shown in Figures 1 to 11, optionally, the laryngeal mask assembly 100 further comprises a laryngeal mask fitting 103, the other end of which is connected to the laryngeal mask conduit 102, the inner tube assembly 400 further comprises an inner tube fitting 403 connected to the inner tube body 401, the airway management system further comprises a breathing circuit fitting assembly 300, the breathing circuit fitting assembly 300 comprises a breathing circuit fitting 310, one end of which is connected to the laryngeal mask fitting 103, or to both the laryngeal mask fitting 103 and the inner tube fitting 403, and the other end of which is configured to be connected to an anesthesia machine or ventilator via a breathing tube. The respiratory circuit connector 310 has a patient end, which has a patient end internal connector 316 and a patient end external connector 317, the patient end external connector 317 being used to connect to the laryngostomy mask connector 103 and the patient end internal connector 316 being used to connect to the internal tube connector 403.

[0077] The laryngeal mask connector 103 can be connected to the patient end of the breathing circuit connector 310, at which point the end cap 320 of the breathing circuit connector is positioned at the first internal connector 318 at the device end, and the inner tube body 401 is inserted via the second internal connector 319 at the device end. The inner tube connector 403 and the external connector 3110 at the device end are connected to the patient end of the breathing duct, and the device end of the breathing duct is connected to an anesthesia machine or a ventilator. As the inner tube body 401 is gradually inserted, the mechanical dead space in the airway management system gradually decreases, and when the patient end of the inner tube assembly 400 is positioned inside the mask body 101 of the laryngeal mask assembly 100 and aligned with the patient end of the laryngeal mask conduit 102, the mechanical dead space can be eliminated. At this point, the patient end of the inner tube assembly 400 enters the patient's trachea through the patient's glottis, eliminating all mechanical dead space and some physiological dead space. This method allows for continuous adjustment of the dead space volume of this airway management system, which is larger than that of conventional products, until all mechanical dead space and some physiological dead space are eliminated, and can be applied to the treatment of patients with excessive ventilation.

[0078] The inner diameters of both the laryngeal mask conduit 102 and the laryngeal mask fitting 103 are larger than those of conventional products, which reduces artificial airway resistance, allows for the insertion of diagnostic and therapeutic devices with larger outer diameters, and allows for the insertion of conventional tracheal conduits with larger outer diameters via the laryngeal mask conduit 102 and laryngeal mask fitting 103. The sampling point of the laryngeal mask assembly 100 is close to the patient end of the conduit, and the sampling point can be brought as close as possible to the alveoli, resulting in more sensitive and accurate sampling analysis, and sampling analysis values ​​that are closer to and have a good correlation with arterial blood gas analysis values.

[0079] As shown in Figures 12 to 16, the airway management system optionally further comprises an expandable tube assembly 600, which comprises an expandable tube patient end connector 602, an expandable tube device end connector 603, and an expandable tube body 601, with the expandable tube patient end connector 602 connected to one end of the expandable tube body 601 and the expandable tube device end connector 603 connected to the other end of the expandable tube body 601, the expandable tube patient end connector 602 configured to connect to a laryngomass connector 103, and the internal tube assembly 400 configured to be inserted via the laryngomass conduit 102, the laryngomass connector 103, and the expandable tube assembly 600, the expandable tube device end connector 603 and the internal tube connector 403 used to connect to the patient end of the breathing circuit connector 310. When the telescopic tube assembly 600 is extended to its fully open position, the patient end of the inner tube assembly 400 is positioned over the patient's glottis. As the telescopic tube assembly 600 is gradually retracted, the patient end of the inner tube assembly 400 moves towards the patient's lungs, passes through the patient's glottis, and enters the patient's trachea.

[0080] The laryngeal mask connector 103 is connectable to the patient end of the telescopic assembly 600. When the telescopic assembly 600 is fully extended, the inner tube assembly 400 can be inserted through the laryngeal mask assembly 100 and the telescopic assembly 600. The patient end of the inner tube assembly 400 is located above the glottis, inside the mask body 101 of the laryngeal mask assembly 100, and aligned with the patient end of the laryngeal mask conduit 102. The inner tube connector 403 and the telescopic end 603 are both connected to the patient end of the breathing circuit connector 310. The breathing circuit connector 310 is connected to an anesthesia machine or ventilator via a breathing tube, eliminating mechanical dead space, preventing the patient from inhaling their own exhaled gases from the laryngeal mask assembly 100, and improving the sensitivity and accuracy of gas sampling analysis results in the patient's airway. As the telescopic tube assembly 600 is gradually shortened, the patient end of the inner tube assembly 400 moves toward the patient's lungs, passes through the glottis and enters the trachea. When the telescopic tube assembly 600 is shortened to its initial state, the patient end of the inner tube assembly 400 reaches the trachea, eliminating all mechanical dead space and some physiological dead space. The inner tube joint 403 and the telescopic tube end joint 603 are both connected to the patient end of the respiratory circuit joint 310, which is then connected to the anesthesia machine or ventilator via the respiratory duct.

[0081] After the inner tube assembly 400 is inserted via the laryngeal mask assembly 100 and the expandable tube assembly 600, the patient end of the inner tube assembly 400 reaches the patient's trachea. Compared to conventional laryngeal mask products, the third ventilation cavity 402 of the inner tube assembly 400 can be selected as the inspiratory passage, and the gap between the inner tube body 401 of the inner tube assembly 400 and the trachea, glottis, and laryngeal mask conduit 102 can be selected as the expiratory passage, ensuring smooth breathing, reducing airway pressure, and lowering the risk of accidental aspiration. The ventilation and positioning action of the inner tube assembly 400 eliminates the risk of airway obstruction and increases the stability of the artificial airway. Compared to conventional tracheal conduit products, it eliminates the risk of mucosal ischemic necrosis caused by the airbag compressing the mucosa of the tracheal wall after inflation.

[0082] As shown in Figure 15a, optionally, the expansion joint assembly 600 further comprises annular projections 605 and a stopper 604, the annular projections 605 being provided on the outer walls of the expansion joint patient end fitting 602 and the expansion joint equipment end fitting 603, respectively, and the stopper 604 restricting the position of the expansion joint assembly 600, so that when the expansion joint assembly 600 is extended to a fully open state, the stopper 604 is positioned between the annular projections 605.

[0083] The laryngeal mask connector 103 is connectable to the patient end of the telescopic assembly 600. When the telescopic assembly 600 is extended to its fully open state, one optional configuration allows the stopper 604 to be positioned between the annular projections 605, and the inner tube assembly 400 can be inserted through the laryngeal mask assembly 100 and the telescopic assembly 600. The patient end of the inner tube assembly 400 is located above the patient's glottis, inside the mask body 101 of the laryngeal mask assembly 100, and aligned with the patient end of the laryngeal mask conduit 102. Both the inner tube connector 403 and the telescopic end connector 603 are connected to the patient end of the breathing circuit connector 310. The breathing circuit connector 310 is connected to an anesthesia machine or ventilator via a breathing tube, eliminating mechanical dead space, preventing the patient from inhaling their own exhaled gases, and improving the sensitivity and accuracy of gas sampling analysis within the patient's airway.

[0084] The annular projections 605 of the telescopic tube assembly 600 of this invention are provided on the outer walls of the patient end joint 602 and the equipment end joint 603, respectively, and the stopper 604 is for limiting the position of the telescopic tube assembly 600. When the telescopic tube assembly 600 is extended to a fully open state, the stopper 604 is positioned between the annular projections 605 to prevent the telescopic tube assembly 600 from shortening. In this way, it is possible to avoid the patient end of the inner tube assembly 400 damaging the patient's glottis and trachea by shortening the telescopic tube assembly 600. After the stopper 604 is removed, as the telescopic assembly 600 is gradually shortened, the patient end of the inner tube assembly 400 moves toward the patient's lungs, passes through the patient's glottis and enters the trachea. When the telescopic assembly 600 is shortened to its initial state, the patient end of the inner tube assembly 400 reaches into the patient's trachea, eliminating all mechanical dead space and some physiological dead space. The inner tube joint 403 and the telescopic end joint 603 are both connected to the patient end of the respiratory circuit joint 310, which is then connected to the anesthesia machine or ventilator via the respiratory duct.

[0085] As shown in Figure 3a, a first gas sampling cavity 108 and a first laryngeal suction cavity 107 are selectively provided within the laryngeal mask conduit 102.

[0086] As shown in Figures 17 and 17a, a drainage cavity 110 is selectively provided within the laryngeal mask conduit 102.

[0087] As shown in Figures 18 and 18a, a video element cavity 109 is selectively provided within the laryngeal mask conduit 102.

[0088] As shown in Figures 18 and 18a, a reserve cavity 111 is selectively provided within the laryngeal mask conduit 102.

[0089] As shown in Figures 2 and 3a, selectively, the patient end of the first gas sampling cavity 108 and the patient end of the first laryngeal suction cavity 107 are positioned close to the patient end of the laryngeal mask conduit 102, and the first gas sampling cavity 108 and the first laryngeal suction cavity 107 within the laryngeal mask conduit 102 are fixed and used in combination.

[0090] The patient end of the first gas sampling cavity 108 of the laryngeal mask assembly 100 and the first gas sampling cavity 108 are located on the ventral side of the patient. Since the patient end of the first gas sampling cavity 108 is close to the patient end of the conduit, the sensitivity and accuracy of gas sampling analysis within the patient's airway can be improved. The patient end of the first laryngeal suction cavity 107 of the laryngeal mask assembly 100 and the laryngeal suction cavity are located on the dorsal side of the patient, and the patient end of the first laryngeal suction cavity 107 is close to the patient end of the laryngeal mask conduit 102. The first laryngeal suction cavity 107 can aspirate secretions near the patient's glottis and can also be used as a backup gas sampling cavity. The patient end of the first gas sampling cavity 108 and the patient end of the first laryngeal suction cavity 107 are fixed and combined, and the first laryngeal suction cavity 107 is symmetrically arranged to ensure the continuity and reliability of gas sampling analysis.

[0091] The first gas sampling cavity 108 of the laryngeal mask assembly 100 may be located inside the laryngeal mask conduit 102 or it may be located outside the laryngeal mask conduit 102. The first laryngeal suction cavity 107 and the first gas sampling cavity 108 are symmetrically positioned and have the same structure. The patient end of the first laryngeal suction cavity 107 and the patient end of the first gas sampling cavity 108 are close to the patient end of the conduit, are symmetrically positioned, and have the same structure. Laryngeal secretions can be aspirated through the first laryngeal suction cavity 107, and it can also be used as a backup gas sampling cavity after the gas sampling cavity becomes clogged, ensuring the continuity and reliability of gas sampling analysis.

[0092] As shown in Figures 19 to 21, an airway management system provided by another embodiment of the present invention comprises a tracheal conduit assembly 200 and an inner tube assembly 400, the inner tube assembly 400 comprising an inner tube body 401, the inner tube body 401 having a third ventilation cavity 402, the tracheal conduit assembly 200 comprising a tracheal conduit 202, the tracheal conduit 202 having a second ventilation cavity 206, the second ventilation cavity 206 being an insertion of the inner tube assembly 400 In this configuration, after the inner tube assembly 400 is inserted, one of the second ventilation cavity 206 and the third ventilation cavity 402 forms an inspiratory cavity and the other forms an expiratory cavity, the tracheal conduit 202 has the same inner diameter, the patient end of the inner tube assembly 400 is configured to align with the patient end of the tracheal conduit 202, and the patient end of the inner tube assembly 400 can be configured to enter the patient's trachea via the patient end of the tracheal conduit 202.

[0093] The internal tube assembly 400 is inserted via the tracheal conduit assembly 200, and both the internal tube fitting 403 and the tracheal conduit fitting 203 are connected to the patient end of the respiratory circuit fitting 310, and the respiratory circuit fitting 310 is connected to the anesthesia machine or ventilator via the respiratory tube, thereby reducing or eliminating mechanical dead space and preventing the patient from inhaling their own exhaled exhaust gases.

[0094] The tracheal conduit connectors 203 of the tracheal conduit assembly 200 can be connected to the patient ends of the respiratory circuit connectors 310, with the respiratory circuit connector tip cap 320 placed on the first internal connector 318 of the respiratory circuit connector 310, and the inner tube body 401 inserted via the second internal connector 319 of the device end, so that the inner tube connector 403 of the inner tube assembly 400 and the external connector 3110 of the respiratory circuit connector 310 are connected to the patient ends of the respiratory tubing, and the device ends of the respiratory tubing are connected to an anesthesia machine or a ventilator. The tracheal conduit fitting 203 of the tracheal conduit assembly 200, which has an equal diameter structure, is connected to the patient end of the breathing circuit fitting 310. After the inner tube body 401 is inserted via the device end second inner fitting 319, the mechanical dead space in the airway management system is gradually reduced as the inner tube body 401 is gradually inserted. When the patient end of the inner tube assembly 400 and the patient end of the tracheal conduit 202 are aligned, the mechanical dead space is eliminated. The patient end of the inner tube assembly 400 is then inserted and enters the patient's trachea, eliminating all mechanical dead space and some physiological dead space.

[0095] The tracheal conduit assemblies 200 of different specifications can be used in combination with inner tube assemblies 400 of different specifications to meet the needs of patients with different glottal areas and different respiratory parameter settings.

[0096] As shown in Figures 22 to 24, an airway management system provided by another embodiment of the present invention comprises a tracheal conduit assembly 200 and an inner tube assembly 400, the inner tube assembly 400 comprising an inner tube body 401, the inner tube body 401 having a third ventilation cavity 402, the tracheal conduit assembly 200 comprising a tracheal conduit 202, the tracheal conduit 202 having a second ventilation cavity 206, the second ventilation cavity 206 is used for insertion of the inner tube assembly 400, and the inner tube After the assembly 400 is inserted, one of the second ventilation cavity 206 and the third ventilation cavity 402 forms an inspiratory cavity, and the other forms an expiratory cavity. The inner diameter of the tracheal conduit 202 is designed such that the inner diameter located next to the patient's glottis during use is smaller than the inner diameter located ahead of the patient's glottis during use. The patient end of the inner tube assembly 400 is configured to be located at the patient end of the larger inner diameter portion of the tracheal conduit 202, which has an unequal diameter structure.

[0097] The internal tube assembly 400 is inserted via the tracheal conduit assembly 200, and both the internal tube fitting 403 and the tracheal conduit fitting 203 are connected to the patient end of the respiratory circuit fitting 310, and the respiratory circuit fitting 310 is connected to the anesthesia machine or ventilator via the respiratory tube, thereby reducing or eliminating mechanical dead space and preventing the patient from inhaling their own exhaled exhaust gases.

[0098] The tracheal conduit connectors 203 of the tracheal conduit assembly 200 can be connected to the patient ends of the respiratory circuit connectors 310, with the respiratory circuit connector tip cap 320 placed on the first internal connector 318 of the respiratory circuit connector 310, and the inner tube body 401 inserted via the second internal connector 319 of the device end, so that the inner tube connector 403 of the inner tube assembly 400 and the external connector 3110 of the respiratory circuit connector 310 are connected to the patient ends of the respiratory tubing, and the device ends of the respiratory tubing are connected to an anesthesia machine or a ventilator. The tracheal conduit fitting 203 of the tracheal conduit assembly 200, which has an unequal diameter structure, is connected to the patient end of the breathing circuit fitting 310, and the inner tube body 401 is inserted via the device end second inner fitting 319. As the inner tube body 401 is gradually inserted, the mechanical dead space within the airway management system is gradually reduced, and if the patient end of the inner tube assembly 400 is located at the patient end of the large inner diameter portion of the tracheal conduit 202 with an unequal diameter structure, some physiological dead space is eliminated.

[0099] The tracheal conduit assemblies 200 of different specifications can be used in combination with inner tube assemblies 400 of different specifications to meet the needs of patients with different glottal areas and different respiratory parameter settings.

[0100] The inner diameter of the tracheal conduit 202 of the present invention may be designed such that the inner diameter located next to the patient's glottis during use is smaller than the inner diameter located in front of the patient's glottis during use, thereby avoiding damage to the patient's glottis and trachea, improving patient comfort, and reducing complications.

[0101] As shown in Figures 19 to 21, selectively, one of the ventilation cavities formed after the inner tube assembly 400 is inserted into the second ventilation cavity 206 and the third ventilation cavity 402 forms an inspiratory cavity and the other forms an expiratory cavity, or Of the portion of the second ventilation cavity 206 into which the inner tube assembly 400 is inserted and the third ventilation cavity 402, one forms an inspiratory cavity and the other forms an expiratory cavity.

[0102] As shown in Figures 19 to 24, optionally, the tracheal conduit assembly 200 further comprises a tracheal conduit fitting 203, the inner tube assembly 400 further comprises an inner tube fitting 403 connected to an inner tube body 401, the airway management system further comprises a respiratory circuit fitting assembly 300, the respiratory circuit fitting assembly 300 comprises a respiratory circuit fitting 310, one end of which is connected to the tracheal conduit fitting 203, or to both the tracheal conduit fitting 203 and the inner tube fitting 403, and the other end of which is configured to be connected to an anesthesia machine or respiratory machine via a respiratory duct. The respiratory circuit connector 310 has a patient end and an equipment end. The patient end of the respiratory circuit connector 310 has a patient end internal connector 316 and a patient end external connector 317. The patient end external connector 317 is used to connect to the tracheal conduit connector 203, and the patient end internal connector 316 is used to connect to the internal tube connector 403.

[0103] The inner diameters of both the tracheal conduit 202 and the tracheal conduit fitting 203 of this invention are larger than those of conventional products, reducing artificial airway resistance and allowing for the insertion of diagnostic and therapeutic devices with larger outer diameters. The sampling point of the tracheal conduit assembly 200 is close to the patient end of the conduit, and the sampling point can be brought as close as possible to the alveoli, resulting in more sensitive and accurate sampling analysis, and sampling analysis values ​​that are closer to and have a good correlation with arterial blood gas analysis values.

[0104] As shown in Figures 7 to 11, 21 and 24, the device end of the respiratory circuit connector 310 is selectively equipped with a first internal connector 318, a second internal connector 319, and an external connector 3110, and the device end of the respiratory circuit connector 310 is provided with three passages: a first internal passage 313, a second internal passage 314, and an external passage 315, and the patient end of the respiratory circuit connector 310 is provided with a patient internal passage 311 and a patient external passage 312. The equipment end first internal passage 313 and the equipment end second internal passage 314 are connected to the patient end internal passage 311, and the equipment end outer passage 315 is connected to the patient end outer passage 312. The patient end internal passage 311 and the patient end outer passage 312 use a coaxial inner and outer double passage structure, and the equipment end first internal joint 318 and the equipment end outer joint 3110 or the equipment end second internal joint 319 and the equipment end outer joint 3110 are respectively connected to the anesthesia machine or the respiratory machine via the respiratory tube.

[0105] After the laryngeal mask fitting 103 or the tracheal conduit fitting 203 is connected to the patient end of the respiratory circuit fitting assembly 300, the respiratory circuit fitting assembly 300 can rotate in any direction within its circumferential range, facilitating insertion and removal of the laryngeal mask fitting 103 of the laryngeal mask assembly 100 or the tracheal conduit fitting 203 of the tracheal conduit assembly 200 from the patient end of the respiratory circuit fitting assembly 300, thereby facilitating the placement of the respiratory pathway.

[0106] The respiratory circuit coupling assembly 300, by using a double-passage design at the patient end and a triple-passage design at the instrument end, can ensure that the laryngeal mask assembly 100 or the tracheal conduit assembly 200 is inserted into the patient, and after the laryngeal mask coupling 103 of the laryngeal mask assembly 100 or the tracheal conduit coupling 203 of the tracheal conduit assembly 200 is connected to the patient end of the respiratory circuit coupling assembly 300, the inner tube assembly 400 is positioned under the guidance of a fibrobronchoscope via the instrument end second inner coupling 319 of the respiratory circuit coupling 310 without interrupting low dead-space airflow. The patient end of the first Luer coupling 330 of the respiratory circuit coupling assembly 300 of this application may be connected to a gas sampling tube, which can collect and detect gas in the laryngeal mask conduit 102, the tracheal conduit, the supraglottic or intratracheal gas.

[0107] As shown in Figures 7, 8, and 10, the respiratory circuit joint assembly 300 optionally further comprises a respiratory circuit joint tip cap 320, the tip of which is provided with an openable respiratory circuit joint tip cap 320, and the respiratory circuit joint tip cap 320 is configured to be connectable to the first internal joint 318 at the device end.

[0108] The laryngeal mask connector 103 of the laryngeal mask assembly 100 is connected to the patient end of the breathing circuit connector 310, or the tracheal conduit connector 203 of the tracheal conduit assembly 200 with an equal diameter structure is connected to the patient end of the breathing circuit connector 310, or the tracheal conduit connector 203 of the tracheal conduit assembly 200 with an unequal diameter structure is connected to the patient end of the breathing circuit connector 310, in which case the breathing circuit connector tip cap 320 is placed on the first internal connector 318 of the device end of the breathing circuit connector 310.

[0109] As shown in Figures 7, 8, and 10, the respiratory circuit joint assembly 300 optionally further comprises a first Luer joint 330, the first Luer joint 330 being connected to the center of the respiratory circuit joint end cap 320.

[0110] As shown in Figures 25 and 25a, the airway management system optionally further comprises a connecting tube 500, which has an unequal diameter structure, and the connecting tube 500 comprises a connecting tube body 501, which, when performing anesthetic induction in a clinical setting, is configured such that one end of the connecting tube body 501 is connected to the patient end of the breathing circuit connector 310, and the other end of the connecting tube body 501 is connected to an anesthetic mask.

[0111] The connecting tube 500 of the present invention is designed with an unequal diameter structure such that one end is connected to the patient end of the respiratory circuit connector 310 and the other end is connected to an anesthesia mask or a regular tracheal conduit.

[0112] As shown in Figures 25 and 25a, optionally, the connecting pipe 500 further comprises a second Luer fitting 502, which is configured to connect to the gas sampling pipe of the monitor.

[0113] The connecting tube 500 of this invention is designed with an unequal diameter structure, and the second Luer connector 502 of the connecting tube 500 can be used as a gas sampling point during anesthesia induction and anesthesia maintenance. The patient end of the connecting tube 500 can be connected to a conventional mask, conventional laryngeal mask, conventional tracheal conduit, laryngeal mask assembly 100 of this invention, tracheal conduit assembly 200 of this invention, laryngeal mask assembly 100 and inner tube assembly 400 of this invention, and tracheal conduit assembly 200 and inner tube assembly 400 of this invention. The mechanical end of the connecting tube 500 is connected to the patient end of the respiratory circuit connector assembly 300. After connection, the mechanical dead space can be increased and is applicable to the induction stage of general anesthesia and to humans treating excessive ventilation.

[0114] As shown in Figures 4 and 4a, a plurality of protrusions 404 are selectively provided on the outer wall of the inner tube body 401, and the protrusions 404 are used to position the inner tube body 401 between the first ventilation cavity 106 or the second ventilation cavity 206.

[0115] The inner tube body 401 of the present invention has a plurality of symmetrically designed projections 404 on its outer wall in the axial direction. After insertion into the ventilation cavity of the laryngeal mask conduit 102 or tracheal conduit 202, the projections 404 support the inner tube body 401 so that it is held in an axially centered position within the ventilation cavity into which it is inserted, ensuring that the lumen of the ventilation cavity between the inner tube body 401 and the laryngeal mask conduit 102 or tracheal conduit 202 is smooth. The inner tube assembly 400 uses a removable structure, allowing for the selection of inner tube assemblies 400 with different inner diameters, outer diameters, and lengths according to the anatomical features of the patient's laryngotrachea and clinical use needs.

[0116] As shown in Figures 19a to 19c and Figures 22a to 22c, a second laryngeal suction cavity 207, a second gas sampling cavity 208, and an airbag air filling cavity 212 are selectively provided within the tracheal conduit 202.

[0117] As shown in Figures 19 to 24, selectively, the patient end of the second gas sampling cavity 208 and the patient end of the second laryngeal suction cavity 207 are positioned close to the patient end of the tracheal conduit 202, and the second gas sampling cavity 208 and the second laryngeal suction cavity 207 are fixed and used in combination.

[0118] The patient end of the second gas sampling cavity 208 and the gas sampling cavity of the tracheal conduit assembly 200 are located ventrally to the patient. The patient end of the second gas sampling cavity 208 is close to the patient end of the conduit, which can improve the sensitivity and accuracy of gas sampling analysis within the patient's airway. The patient end of the second laryngeal suction cavity 207 and the laryngeal suction cavity of the tracheal conduit assembly 200 are located dorsally to the patient, and the patient end of the second laryngeal suction cavity 207 is close to the patient end of the conduit. The second laryngeal suction cavity 207 can aspirate secretions near the patient's glottis and can also be used as a backup gas sampling cavity. The patient end of the second gas sampling cavity 208 and the patient end of the second laryngeal suction cavity 207 are fixedly combined and symmetrically arranged to ensure the continuity and reliability of gas sampling analysis.

[0119] The second gas sampling cavity 208 of the tracheal conduit assembly 200 of the present invention may be located inside the tracheal conduit 202 or independently of the tracheal conduit 202, which is convenient for product design, research and development, and production. Example 1

[0120] Figure 1 to Diagram 16, Figure 25, Figure 25 Referring to a, the illustrated airway management system is the laryngeal mask assembly 1 00 , respiratory circuit joint assembly 3 00 , inner pipe assembly 4 00 , connecting pipe 5 00 and telescopic pipe assembly 6 00 It is equipped with.

[0121] figure 2 diagram 3a As shown, the laryngeal mask assembly 1 00 The mask body 101 and laryngeal mask conduit 102 and laryngostomy mask fitting 103 and a laryngeal mask air-filled conduit 104 and the laryngeal mask air filling valve 105 It is equipped with a laryngeal mask conduit. 102 One end is the mask body 101 It communicates with the other end, and the other end is a laryngeal mask fitting.103 Connected to a laryngeal mask air filling conduit. 104 is a laryngeal mask conduit 102 It is located on the outside, with one end attached to the mask body. 101 It is connected to and capable of air filling, and is a laryngeal mask air filling conduit. 104 The other end is a laryngeal mask air filling valve. 105 It connects to the diagram. 3a As shown, laryngeal mask conduit 102 Inside is the first ventilation cavity 106 , First gas sampling cavity 108 and the first laryngeal suction cavity 107 These three cavities each A first ventilation cavity is provided. 106 This is the inner pipe assembly 4 00 Insert the laryngeal mask conduit. 102 Located in the central part. First gas sampling cavity 108 and the first laryngeal suction cavity 107 These are laryngeal mask conduits, respectively. 102 Located inside, the first gas sampling cavity 108 Patient end and first laryngeal suction cavity 107 The patient end is the laryngeal mask conduit. 102 It is close to the patient end. First gas sampling cavity 108 This is the first gas sampling tube. 112 Connected to the first laryngeal suction cavity 107 This is the first laryngeal suction tube. 113 Connected to the first gas sampling tube 112 and the first laryngeal suction tube 113 The other end has a third lure joint. 114 The third lure connector is connected. 114 It is connected to a monitor and used to analyze the components and concentrations of gases inhaled or exhaled by the patient. First laryngeal suction tube 113 It can also be used as a suction passage for the patient's laryngeal secretions, or as a backup gas sampling tube.

[0122] Here, the laryngeal mask conduit 102 The usable inner diameter range is 3.3 to 25 mm. In some embodiments, the laryngeal mask conduit102 The inner diameter may be any integer between 4 mm and 25 mm, such as 3.5 mm, 4.5 mm, 5.5 mm, 6.5 mm, 7.5 mm, 8.5 mm, 9.5 mm, 10.5 mm, 11.5 mm, 12.5 mm, 13.5 mm, 14.5 mm, 15.5 mm, 16.5 mm, 17.5 mm, 18.5 mm, 19.5 mm, 20.5 mm, 21.5 mm, 22.5 mm, 23.5 mm, 24.5 mm, etc. Inner tube body 401 The usable inner diameter is 2 to 12 mm. In some examples, the inner tube body 401 The inner diameter may be any integer between 2 mm and 12 mm, such as 2.5 mm, 3.5 mm, 4.5 mm, 5.5 mm, 6.5 mm, 7.5 mm, 8.5 mm, 9.5 mm, 10.5 mm, 11.5 mm, etc.

[0123] Also, the mask itself 101 The dimensions can be specified using specifications such as 1#, 1.5#, 2#, 2.5#, 3#, 4#, 5#, and 6#. These dimensions are standard dimensions for existing commercially available products and will not be explained further here.

[0124] figure 7 diagram 11 As shown, the respiratory circuit joint assembly 3 00 is a respiratory circuit connector. 310 , breathing circuit connector tip cap 320 and the first lure joint 330 It includes: a breathing circuit connector. 310 is a respiratory circuit connector. 310 Patient end and respiratory circuit connector 310 Equipped with a device terminal and a respiratory circuit connector 310 The patient end is the patient end internal joint 3 16 and patient end external joint 3 17 Equipped with a breathing circuit connector 310 The equipment end is the first internal joint 3 at the equipment end. 18 and the equipment terminal second internal joint 3 19 and equipment end external joint 3 110 It is equipped with a patient end passage 3 11 and patient end outer passage 3 12 A patient-end internal passage 3 is provided. 11and patient end outer passage 3 12 It uses a coaxial double-passage structure (internal and external). (Breathing circuit coupling) 310 Inside the equipment terminal, there is the first internal joint 3 at the equipment terminal. 18 Equipment terminal 1 internal passage 3 located inside 13 , equipment terminal second internal joint 3 19 Equipment terminal second internal passage 3 located inside 14 and equipment end external joint 3 110 Equipment end outer passage 3 located inside 15 Three passages are provided, and the first internal passage 3 at the end of the equipment 13 , equipment end 2nd inner passage 3 14 and patient end passage 3 11 The equipment terminal outer passage 3 is connected. 15 and patient end outer passage 3 12 The connection is made to the second internal joint at the equipment terminal 3. 19 The tip has a retractable breathing circuit connector end cap. 320 A respiratory circuit connector tip cap is provided. 320 At its center is the first lure joint. 330 The connections are made. During clinical use, the patient end external joint 3 17 This is a laryngeal mask fitting. 103 or expansion joint patient end joint 602 It is connected to the patient end internal joint 3 16 internal pipe fittings 403 It connects to the first internal joint at the equipment terminal 3. 18 and equipment end external joint 3 110 It is connected to the breathing tube, the breathing tube is connected to the anesthesia machine or ventilator, and the end cap of the breathing circuit connector 320 Remove the second internal passage 3 at the end of the equipment. 14 A fibrobronchoscope, a sealed sputum suction tube, or a bronchial occluder can be inserted via this, and the second internal joint at the end of the device 319 and equipment end external joint 3 110 It is connected to the breathing tube and has a breathing circuit connector end cap. 320 Remove the first internal joint 3 at the end of the equipment. 18 The respiratory tube is placed in this position and connected to the anesthesia machine or ventilator.

[0125] figure 4 diagram 4 As shown in a, the inner pipe assembly 4 00 The inner tube body401 and internal pipe fittings 403 Equipped with, the inner tube body 401 Inside is a third ventilation cavity 402 A first ventilation cavity is provided. 106 Inside, according to clinical needs, there is an internal tube assembly 4 00 A sealed sputum suction tube or bronchial occlusion plug can be inserted, and the inner tube assembly 4 00 After insertion, the inner tube body 401 A sealed sputum suction tube or a bronchial occluder can also be inserted inside. 401 Multiple protrusions are symmetrically arranged along the axial direction of the outer wall. 404 Having, protrusion 404 The inner pipe body 401 and laryngeal mask conduit 102 The first ventilation cavity inside 106 It is used for positioning.

[0126] figure 25 diagram 25 As shown in a, connecting pipe 5 00 It has an unequal diameter structure, while an equal diameter structure is a connecting pipe. 500 The pipe diameter (inner or outer diameter) at each point is completely or nearly identical. An unequal diameter structure is the opposite of an equal diameter structure, and an unequal diameter structure is a connecting pipe 500 This refers to a structure where the pipe diameter differs at each point, i.e., connecting pipes. 500 They have different inner diameter (outer diameter) dimensions / sizes, and also connecting pipes 500 The pipes have the same wall thickness. Connecting pipe 5 00 The connecting pipe body 501 and the second lure joint 502 It is equipped with, in clinical use, the connecting tube body 501 One end is a breathing circuit connector. 310 It is connected to the patient end, and the other end is connected to the anesthesia mask, and a second Luer connector 502 It is connected to a gas sampling tube to facilitate anesthesia induction, and the connecting tube 5 00 It has one end connected to a standard tracheal conduit fitting and the other end connected to a respiratory circuit fitting. 310 The patient end is connected to the second Luer connector. 502 It is connected to the monitor's gas sampling tube and the laryngostomy mask assembly 100 This facilitates cannula therapy via this method.

[0127] figure 1. Figure 12 As shown in Figure 16, the expansion joint assembly 6 00 The main body of the telescopic tube 601 Expansion joint patient end joint 602 and expansion joint equipment end fittings 603 It is equipped with: Expansion joint patient end joint 602 is a laryngeal mask fitting 103 Connected to the end joint of the expansion joint equipment 603 is a respiratory circuit connector. 310 Connects to the patient end. Laryngeal mask fitting 103 is an expansion joint patient end joint 602 It can be connected to the telescopic pipe assembly 6 00 When extended until fully open, the laryngeal mask assembly 1 00 and telescopic pipe assembly 6 00 via the inner pipe assembly 4 00 The inner tube assembly 4 can be inserted. 00 The patient end is above the patient's glottis, and the mask body. 101 Located inside, laryngeal mask conduit 102 It can be aligned with the patient end and eliminate mechanical dead space. Expansion tube assembly 6 00 As it gradually shortens, the inner tube assembly 4 00 The patient end moves into the patient's lungs, passes through the patient's glottis, and enters the patient's trachea. (Expandable tube assembly 6) 00 When shortened to its initial state, the inner tube assembly 4 00 The patient end reaches the patient's trachea, eliminating all mechanical dead space and some physiological dead space.

[0128] When performing anesthetic induction in a clinical setting, the connecting tube 5 00 is a respiratory circuit connector. 310 The patient end and the anesthesia mask are connected respectively, and the second Luer connector 502 It is connected to the monitor's gas sampling tube, the anesthesia mask covers the patient's mouth and nose, and the breathing circuit connector 310 It is connected to an anesthesia machine or ventilator via a respiratory tube.

[0129] In one example, Figure 15 As shown in a, the expansion joint assembly 6 of the present invention 00 is an annular projection 605 and stopper 604 It can also be equipped with an annular projection 605 is an expansion joint patient end joint 602 and expansion joint equipment end fittings 603 A stopper is provided on each of the outer walls. 604 This is the expansion joint assembly 6 00 This is for positioning the expansion joint assembly 6 00 When it extends to the fully open position, the stopper 604 is an annular projection 605 It is located between the two. When in use, the expansion joint assembly 6 00 When it extends to the point where it is fully open, the annular projection 605 Stopper 604 Place the laryngeal mask assembly 1 00 and telescopic pipe assembly 6 00 via the inner pipe assembly 4 00 The inner tube assembly 4 can be inserted. 00 The patient end is above the patient's glottis, and the mask body. 101 Located inside, laryngeal mask conduit 102 Aligned with the patient's end. Stopper 604 After removing the telescopic tube assembly 6 00 As it gradually shortens, the inner tube assembly 4 00 The patient end moves into the patient's lungs, passes through the patient's glottis, and enters the patient's trachea. Here, the stopper 604 It may be designed as a separable hollow circular tube, as shown in Figure 15 As shown in a, stopper 604 Body of the telescopic tube 601 The part located above it may be a separable part. Stopper 604 The detachable part of the stopper 604 It can be extended and retracted, and the telescopic pipe assembly 6 00 Position the expansion joint assembly 6 inside or outside the hollow circular tube. 00 To implement location-restricted or unrestricted functionality for this purpose.

[0130] The following describes in detail how to use / operate the airway management system of this invention.

[0131] During anesthesia maintenance, laryngeal mask assembly 1 00 After it is inserted into the patient, the laryngeal mask fitting 103 is a respiratory circuit connector 310 It is connected to the patient end and the breathing circuit connector. 310 It is connected to an anesthesia machine or ventilator via a respiratory tube. First gas sampling tube 112 The third lure joint at the end 114 It is connected to the monitor's gas sampling tube to analyze the components and concentration of gases inhaled or exhaled by the patient. Front end first internal joint 3 18 and equipment end external joint 3 110 It is connected to the breathing tube, and the device end second internal joint 3 19 and equipment end external joint 3 110 It may be connected to a respiratory tube, and the respiratory tube is connected to an anesthesia machine or a ventilator. Equipment end 1st internal joint 3 18 , external joint at the end of the equipment 3 110 When the respiratory tube is connected to the respiratory tube and the respiratory tube is connected to the anesthesia machine or ventilator, the second internal passage 3 at the end of the equipment 14 After this, a fibrobronchoscope, a sealed sputum suction tube, a bronchial occlusion plug, etc., can be inserted.

[0132] During anesthesia maintenance, laryngeal mask assembly 1 00 After the laryngeal mask conduit is inserted into the patient, 102 and laryngeal mask fitting 103 via the inner pipe assembly 4 00 It is inserted, and the laryngeal mask fitting 103 and internal pipe fittings 403 Both are respiratory circuit connectors 310 It connects to the patient end. Patient end external coupling 3 17 This is a laryngeal mask fitting. 103 It is connected to the patient end internal coupling 3. 16 internal pipe fittings 403 It is connected to the first internal coupling 3 at the equipment end. 18 and equipment terminal external coupling 3 110 It is connected to the breathing tube, and the device end second internal coupling 3 19 and equipment terminal external coupling 3110 It is connected to a respiratory tube, which is connected to an anesthesia machine or ventilator, thus eliminating mechanical dead space.

[0133] During anesthesia maintenance, laryngeal mask assembly 1 00 After the laryngeal mask assembly 1 is inserted into the patient, 00 is the respiratory circuit joint assembly 3 00 After connecting to the patient end, the respiratory circuit connector end cap 320 Remove the first internal joint 3 at the end of the equipment. 18 Place it there. Equipment terminal second internal joint 310 via the main body of the inner pipe 401 Insert the internal pipe fitting. 403 and equipment end external joint 3 110 Each end is connected to the patient end of the respiratory tube, and the equipment end of the respiratory tube is connected to the anesthesia machine or ventilator. 401 As it is gradually inserted, the mechanical dead space within the airway management system gradually decreases, and the inner tube assembly 4 00 The patient end is the mask body 101 Located inside, laryngeal mask conduit 102 When aligned with the patient end, the mechanical dead space is eliminated, and the inner tube assembly 4 00 The patient's end enters the trachea via the glottis, eliminating all mechanical dead space and some physiological dead space.

[0134] During anesthesia maintenance, laryngeal mask assembly 1 00 After it is inserted into the patient, the laryngeal mask fitting 103 Expansion tube patient end joint 602 It may also be connected to the telescopic pipe assembly 6 00 When the laryngeal mask assembly 1 extends until it is fully open, 00 and telescopic pipe assembly 6 00 via the inner pipe assembly 4 00 It can be inserted, and at this time, the inner tube assembly 4 00 The patient end is above the patient's glottis, and the mask body. 101 Located inside, laryngeal mask conduit 102 Aligned with the patient end. Patient end external joint 3 17 Expansion joint equipment end fittings 603is connected to the patient-side joint 3 16 is an inner tube joint 403 is connected to the device-side first joint 3 18 and the device-side outer joint 3 110 is connected to the breathing tube, the device-side second joint 3 19 and the device-side outer joint 3 110 may be connected to the breathing tube, the breathing tube is connected to an anesthesia machine or a ventilator, and all mechanical dead spaces are eliminated. As the telescopic tube assembly 6 00 is gradually shortened, the patient end of the inner tube assembly 4 00 moves towards the patient's lungs, enters the patient's trachea through the patient's glottis, and when the telescopic tube assembly 6 00 is shortened until it returns to the initial state, the patient end of the inner tube assembly 4 00 can enter the trachea through the glottis, thereby eliminating all mechanical dead spaces and some physiological dead spaces. The end of the first gas sampling tube 112 the third Luer joint 114 is connected to the gas sampling tube of the monitor to analyze the components and concentrations of the gas inhaled or exhaled by the patient. In one example, when the telescopic tube assembly 6 00 extends until it is fully open, a stopper 605 is placed between the annular protrusions 604 and the stopper 00 is removed before the telescopic tube assembly 6 604 is shortened.

[0135] When inserting a normal tracheal tube through the laryngeal mask assembly 1 00 the joint of the tracheal tube is connected to the patient end of the connecting tube 5 00 the device end of the connecting tube 5 00 is connected to the patient end of the respiratory circuit joint 310 the second Luer joint 502 is connected to the gas sampling tube of the monitor. When inserting the other assembly of the present application, for example, the tracheal tube assembly 2 00 through the laryngeal mask assembly 1 00 the inner tube assembly 4 206 is also inserted into the second ventilation cavity at the same time, and the tracheal tube joint 00 and the inner tube joint 203403 Both are respiratory circuit connectors 310 The second gas sampling tube of the present invention is connected to the patient end. 209 The fourth lure joint at the end 211 It is connected to the monitor's gas sampling tube. Example 2

[0136] figure 1. Figure 4 Figure 1 7 a Figures 25 and 25a Referring to the diagram, the airway management system is the laryngeal mask assembly 1. 00 , respiratory circuit joint assembly 3 00 , inner pipe assembly 4 00 , connecting pipe 5 00 and telescopic pipe assembly 6 00 It is equipped with.

[0137] figure 17 As shown, the laryngeal mask assembly 1 00 The mask body 101 and laryngeal mask conduit 102 and laryngostomy mask fitting 103 and a laryngeal mask air-filled conduit 104 and the laryngeal mask air filling valve 105 It is equipped with a laryngeal mask conduit. 102 One end is the mask body 101 It communicates with the other end, and the other end is a laryngeal mask fitting. 103 Connected to a laryngeal mask air filling conduit. 104 is a laryngeal mask conduit 102 It is located on the outside, with one end attached to the mask body. 101 It is connected to and capable of air filling, and is a laryngeal mask air filling conduit. 104 The other end is a laryngeal mask air filling valve. 105 It is connected to the laryngeal mask conduit of this embodiment. The difference from Embodiment 1 is that the laryngeal mask conduit of this embodiment 102 Inside, see Figure 1 7 As shown in a, the first ventilation cavity 106 , First gas sampling cavity 108 , 1st laryngeal suction cavity 107 and drainage cavity 110 The following four cavities are provided: First ventilation cavity106 , the first gas sampling cavity 108 , the first laryngeal suction cavity 107 and the drainage cavity 110 are respectively arranged in the laryngeal mask conduit 102 . The patient end of the first gas sampling cavity 108 and the patient end of the first laryngeal suction cavity 107 are close to the patient end of the laryngeal mask conduit 102 . The first gas sampling cavity 108 communicates with the first gas sampling tube 112 , and the first laryngeal suction cavity 107 communicates with the first laryngeal suction tube 113 . A third Luer connector 112 is connected to the other ends of the first gas sampling tube 113 and the first laryngeal suction tube 114 . The third Luer connector 114 is connected to a monitor and used to analyze the components and concentrations of the gas inhaled or exhaled by the patient. The first laryngeal suction tube 113 may also serve as a suction passage for the patient's laryngeal secretions and may also serve as a spare gas sampling tube.

[0138] The breathing circuit adapter assembly 3 in this embodiment 00 , the inner tube assembly 4 00 , the connecting tube 5 00 , the telescopic tube assembly 6 00 is similar in structure and function to the breathing circuit adapter assembly 3 00 , the inner tube assembly 4 00 , the connecting tube 5 00 , the telescopic tube assembly 6 00 in the above embodiment 1, so the description is omitted here.

[0139] The airway management system in this embodiment includes, when in use, the use / operation method in the above embodiment 1, and the description of the same parts is omitted. The difference from the use / operation method of embodiment 1 is that during anesthesia maintenance, after the laryngeal mask assembly 1 00 is inserted into the patient, the drainage cavity 110The patient end is connected to the patient's esophageal opening and used to drain the patient's gastric contents, creating a drainage cavity. 110 This involves inserting a gastric tube along the curve. Example 3

[0140] figure 1. Figure 4 diagram 16, Figure 18 to Figure 1 8 Referring to a, the illustrated airway management system is the laryngeal mask assembly 1 00 , respiratory circuit joint assembly 3 00 , inner pipe assembly 4 00 , connecting pipe 5 00 and telescopic pipe assembly 6 00 It is equipped with.

[0141] figure Figures 18 and 18a As shown, the laryngeal mask assembly 1 00 The mask body 101 and laryngeal mask conduit 102 and laryngostomy mask fitting 103 and a laryngeal mask air-filled conduit 104 and the laryngeal mask air filling valve 105 It is equipped with a laryngeal mask conduit. 102 One end is the mask body 101 It communicates with the other end, and the other end is a laryngeal mask fitting. 103 Connected to a laryngeal mask air filling conduit. 104 is a laryngeal mask conduit 102 It is located on the outside, with one end attached to the mask body. 101 It is connected to and capable of air filling, and is a laryngeal mask air filling conduit. 104 The other end is a laryngeal mask air filling valve. 105 Connects to. Example 1~2 The difference is the laryngeal mask conduit in this embodiment. 102 Inside is the first ventilation cavity 106 , First gas sampling cavity 108 , 1st laryngeal suction cavity 107 ,video element Cavity 109 Drainage cavity 110 and spare cavity 111 Six cavities are provided, as shown in Figure 1. 8As shown in a, the first ventilation cavity 106 The laryngeal mask conduit 102 Located in the central part, the inner tube assembly 4 00 To facilitate insertion. First gas sampling cavity 108 , 1st laryngeal suction cavity 107 ,video element Cavity 109 Drainage cavity 110 and spare cavity 111 These are laryngeal mask conduits, respectively. 102 Located inside, the first gas sampling cavity 108 Patient end and first laryngeal suction cavity 107 The patient end is the laryngeal mask conduit. 102 It is close to the patient end. First gas sampling cavity 108 This is the first gas sampling tube. 112 Connected to the first laryngeal suction cavity 107 This is the first laryngeal suction tube. 113 Connected to the first gas sampling tube 112 and the first laryngeal suction tube 113 The other end has a third lure joint. 114 The third lure connector is connected. 114 It is connected to a monitor and used to analyze the components and concentrations of gases inhaled or exhaled by the patient. First laryngeal suction tube 113 It can also be used as a suction passage for the patient's laryngeal secretions, or as a backup gas sampling tube.

[0142] Respiratory circuit joint assembly 3 in this embodiment 00 , inner pipe assembly 4 00 , connecting pipe 5 00 , Expansion tube assembly 6 00 This is the respiratory circuit joint assembly 3 in the above examples 1-2. 00 , inner pipe assembly 4 00 , connecting pipe 5 00 , Expansion tube assembly 6 00 Since its structure and function are similar to that of [another system], we will omit the explanation here.

[0143] The airway management system in this embodiment includes the usage / operation method described in Embodiment 2 above, and the same parts will not be explained. The difference from the usage / operation method in Embodiment 2 is that during anesthesia maintenance, the laryngeal mask assembly 1 00 After it was inserted into the patient, throat video element Cavity 109 via video element (1) Mask body 101 Observe the position, the condition of the glottis and the condition of laryngeal secretions, and take appropriate measures, and (2) the inner tube assembly 4 00 When the patient end moves to the patient's lungs, it enters the trachea via the glottis under video surveillance guidance, thus avoiding damage to the glottis and trachea, and (3) Laryngeal mask assembly 1 00 When inserting a tracheal conduit via this method, it can be done under video surveillance guidance, which helps avoid damage to the glottis and trachea. (Reserve cavity) 111 via video element Cavity 109 The patient end can be cleaned, video element Cavity 109 Maintains clarity and transparency at the patient's edge. Example 4

[0144] figure 4 diagram 4 a, Figures 7 to Figures 11 ,figure 19 Figure 2 1. Figures 25 and 25a Referring to the diagram, the airway management system is the tracheal conduit assembly 2. 00 and the respiratory circuit joint assembly 3 00 And, inner pipe assembly 4 00 And, connecting pipe 5 00 It is equipped with the following.

[0145] figure 19 diagram 21 As shown, tracheal conduit assembly 2 00 is an airbag 201 and tracheal conduit 202 and tracheal conduit joint 203 And, airbag air filling tube 204 And, the airbag air filling valve205 It is equipped with a tracheal conduit. 202 Inside, there is a second ventilation cavity. 206 , second laryngeal suction cavity 207 airbag air filling cavity 212 and second gas sampling cavity 208 Each of these four cavities is provided, and the second ventilation cavity 206 and tracheal conduit 202 The inner diameter is designed to be the same or the same in each stage of the lumen, in other words, the second ventilation cavity 206 and tracheal conduit 202 The size / dimensions of the inner diameter of each part are the same. Second gas sampling cavity 208 Patient end and second laryngeal suction cavity 207 The patient end is a tracheal conduit. 202 Proximity to the patient end. Airbag air-filled cavity 212 The end of the device is the airbag air filling tube. 204 Connected to the airbag air filling tube 204 This is the airbag air filling valve. 205 It connects to the second ventilation cavity. 206 is a tracheal conduit 202 Located in the central part, the inner tube assembly 4 00 To facilitate insertion. Airbag air filling cavity 212 , second gas sampling cavity 208 and second laryngeal suction cavity 207 These are tracheal conduits, respectively. 202 Located inside, the second laryngeal suction cavity 207 This is the second laryngeal suction tube. 210 It is connected to the second gas sampling cavity. 208 This is the second gas sampling tube. 209 It is connected to the second laryngeal suction tube. 210 and second gas sampling tube 209 The end of the device is the fourth lure connector. 211 It connects to the fourth lure joint. 211 It is connected to a monitor and used to analyze the components and concentrations of gases inhaled or exhaled by the patient. Second laryngeal suction tube 210It can also be used as a suction passage for the patient's laryngeal secretions, or as a backup gas sampling tube.

[0146] Here, the tracheal conduit 202 The usable inner diameter range is 2 to 20 mm. In some cases, tracheal conduit 202 The inner diameter may be any integer between 2 mm and 20 mm, such as 2.5 mm, 3.5 mm, 4.5 mm, 5.5 mm, 6.5 mm, 7.5 mm, 8.5 mm, 9.5 mm, 10.5 mm, 11.5 mm, 12.5 mm, 13.5 mm, 14.5 mm, 15.5 mm, 16.5 mm, 17.5 mm, 18.5 mm, 19.5 mm, etc. In some examples, the inner tube body 401 The inner diameter is 2 to 12 mm. In some embodiments, the inner tube body 401 The inner diameter may be any integer between 2 mm and 12 mm, such as 2.5 mm, 3.5 mm, 4.5 mm, 5.5 mm, 6.5 mm, 7.5 mm, 8.5 mm, 9.5 mm, 10.5 mm, 11.5 mm, etc.

[0147] figure 7 diagram 11 As shown, the respiratory circuit joint assembly 3 00 is a respiratory circuit connector. 310 , breathing circuit connector tip cap 320 and the first lure joint 330 It includes: a breathing circuit connector. 310 is a respiratory circuit connector 310 Patient end and respiratory circuit connector 310 Equipped with a device terminal and a respiratory circuit connector 310 The patient end is the patient end internal joint 3 16 and patient end external joint 3 17 Equipped with a breathing circuit connector 310 The equipment end is the first internal joint 3 at the equipment end. 18 and the equipment terminal second internal joint 3 19 and equipment end external joint 3 110 Equipped with a breathing circuit connector 310 Within the patient end, there is a patient end passage 3 11 and patient end outer passage 3 12 A patient-end internal passage 3 is provided. 11 and patient end outer passage 3 12It uses a coaxial double-passage structure (internal and external). (Breathing circuit coupling) 310 Inside the equipment terminal, there is the first internal joint 3 at the equipment terminal. 18 Equipment terminal 1 internal passage 3 located inside 13 , equipment terminal second internal joint 3 19 Equipment terminal second internal passage 3 located inside 14 and equipment end external joint 3 110 Equipment end outer passage 3 located inside 15 Three passages are provided, and the first internal passage 3 at the end of the equipment 13 , equipment end 2nd inner passage 3 14 and patient end passage 3 11 The equipment terminal outer passage 3 is connected. 15 and patient end outer passage 3 12 The connection is made to the second internal joint at the equipment terminal 3. 19 The tip has a retractable breathing circuit connector end cap. 320 A respiratory circuit connector tip cap is provided. 320 At its center is the first lure joint. 330 The connections are made. During clinical use, the patient end external joint 3 17 is a tracheal conduit fitting 203 It is connected to the patient end internal joint 3 16 internal pipe fittings 403 It connects to the first internal joint at the equipment terminal 3. 18 and equipment end external joint 3 110 It is connected to the breathing tube, the breathing tube is connected to the anesthesia machine or ventilator, and the end cap of the breathing circuit connector 320 Remove the second internal passage 3 at the end of the equipment. 14 A fibrobronchoscope, a sealed sputum suction tube, or a bronchial occluder can be inserted via this, and the second internal joint at the end of the device 319 and equipment end external joint 3 110 It is connected to the breathing tube and has a breathing circuit connector end cap. 320 Remove the first internal joint 3 at the end of the equipment. 18 The respiratory tube is placed in this position and connected to the anesthesia machine or ventilator.

[0148] figure 4 diagram 4 a and Figure 2 0 Figure 2 1 As shown, the inner pipe assembly 4 00 The inner tube body 401and internal pipe fittings 403 Equipped with, the inner tube body 401 Inside is a third ventilation cavity 402 A second ventilation cavity is provided. 206 Inside, according to clinical needs, there are four internal tube assemblies. 00 A sealed sputum suction tube or bronchial occlusion plug can be inserted, and the inner tube assembly 4 00 After insertion, the inner tube body 401 A sealed sputum suction tube or a bronchial occluder can also be inserted inside. 401 Multiple protrusions are symmetrically arranged along the axial direction of the outer wall. 404 Having, protrusion 404 The inner pipe body 401 and tracheal conduit 2 0 2 Second ventilation cavity inside 206 It is used for positioning.

[0149] figure 25 diagram 25 As shown in a, connecting pipe 5 00 It has an unequal diameter structure, and the connecting pipe body 501 and the second lure joint 502 Equipped with, in clinical use, the connecting tube body 501 One end is a breathing circuit connector. 310 It is connected to the patient end, and the other end is connected to the anesthesia mask, and a second Luer connector 502 It is connected to the monitor's gas sampling tube, making it easier to use for anesthesia induction.

[0150] When performing anesthetic induction in a clinical setting, the connecting tube 5 00 is a respiratory circuit connector 310 The patient end and the anesthesia mask are connected respectively, and the second Luer connector 502 It is connected to the monitor's gas sampling tube, the anesthesia mask covers the patient's mouth and nose, and the breathing circuit connector 310 It is connected to an anesthesia machine or ventilator via a respiratory tube.

[0151] During anesthesia maintenance, tracheal conduit assembly 2 00 After it is inserted into the patient, the tracheal conduit fitting 203 to breathing circuit connector 310 Connect to the patient end and the respiratory circuit connector.310 The end of the device is connected to the anesthesia machine or ventilator via a breathing tube. Second gas sampling tube 209 The fourth lure joint 211 It is connected to the monitor's gas sampling tube to analyze the components and concentrations of gases inhaled or exhaled by the patient. Instrument end 1 internal fitting 3 18 and equipment end external joint 3 110 It is connected to the breathing tube, and the device end second internal joint 3 19 and equipment end external joint 3 110 It may be connected to a respiratory tube, and the respiratory tube is connected to an anesthesia machine or a ventilator. Equipment end 1st internal joint 3 18 , external joint at the end of the equipment 3 110 When the respiratory tube is connected to the respiratory tube and the respiratory tube is connected to the anesthesia machine or ventilator, the second internal passage 3 at the end of the equipment 14 After this, a fibrobronchoscope, a sealed sputum suction tube, a bronchial occlusion plug, etc., can be inserted.

[0152] During anesthesia maintenance, tracheal conduit assembly 2 00 After the tracheal conduit is inserted into the patient, 202 and tracheal conduit joint 203 via the inner pipe assembly 4 00 You may insert the inner tube assembly 4 00 Patient end and tracheal conduit 202 The patient end is aligned, and the tracheal conduit joint 203 and internal pipe fittings 403 Both are respiratory circuit connectors 310 It connects to the patient end. Patient end external joint 3 17 is a tracheal conduit fitting 203 It is connected to the patient end internal joint 3 16 This is the inner pipe fitting of inner pipe assembly 4 403 It connects to the first internal joint at the equipment terminal 3. 18 and equipment end external joint 3 110 It is connected to the breathing tube, and the device end second internal joint 3 19 and equipment end external joint 3 110 It may be connected to a respiratory line, which is connected to an anesthesia machine or ventilator, eliminating all mechanical dead space. Second gas sampling tube 209 The fourth lure joint at the end 211It is connected to the monitor's gas sampling tube to analyze the components and concentrations of gases inhaled or exhaled by the patient.

[0153] During anesthesia maintenance, tracheal conduit assembly 2 00 After it is inserted into the patient, the tracheal conduit fitting 203 is the respiratory circuit joint assembly 3 00 After connecting to the patient end, the respiratory circuit connector end cap 320 Remove the first internal joint 3 at the end of the equipment. 18 Place it there. Equipment terminal second internal joint 3 19 via the main body of the inner pipe 401 Insert the internal pipe fitting. 403 and equipment end external joint 3 110 Each end is connected to the patient end of the respiratory tube, and the equipment end of the respiratory tube is connected to the anesthesia machine or ventilator. 401 As it is gradually inserted, the mechanical dead space within the airway management system gradually decreases, and the inner tube assembly 4 00 Patient end and tracheal conduit 202 Once the patient end is aligned, all mechanical dead space is eliminated. Inner tube assembly 4 00 The patient end can then be inserted and enter the trachea, thereby eliminating all mechanical dead space and some physiological dead space. Example 5

[0154] figure 4 diagram 4 a, Figures 7 to Figures 11 ,figure 22 Figure 25 a Referring to the diagram, the airway management system is the tracheal conduit assembly 2. 00 , respiratory circuit joint assembly 3 00 , inner pipe assembly 4 00 and connecting pipe 5 00 It is equipped with.

[0155] figure 22 diagram 24 As shown, tracheal conduit assembly 2 00 is an airbag 201 and tracheal conduit 202 and tracheal conduit joint 203 And, airbag air filling tube204 And, the airbag air filling valve 205 It is equipped with a tracheal conduit. 202 Inside, there is a second ventilation cavity. 206 , second laryngeal suction cavity 207 airbag air filling cavity 212 and second gas sampling cavity 208 There are four cavities, and the difference from Example 4 is the second ventilation cavity in this example. 206 and tracheal conduit 202 This means that the structure is designed so that the inner diameter of the next stage of the patient's glottis is smaller than the inner diameter of the preceding stage of the patient's glottis; in other words, the second ventilation cavity 206 and tracheal conduit 202 The inner diameter of each section differs, and the inner diameter located next to the patient's glottis during use is smaller than the inner diameter located in front of the patient's glottis during use. Second gas sampling cavity 208 Patient end and second laryngeal suction cavity 207 The patient end is a tracheal conduit. 202 It is close to the patient end. The instrument end of the airbag air filling cavity 212 is the airbag air filling tube. 204 Connected to the airbag air filling tube 204 This is the airbag air filling valve. 205 It connects to the second ventilation cavity. 206 is a tracheal conduit 202 Located in the central part, the inner tube assembly 4 00 To facilitate insertion. Airbag air filling cavity 212 , second gas sampling cavity 208 and second laryngeal suction cavity 207 These are tracheal conduits, respectively. 202 Located inside, the second laryngeal suction cavity 207 This is the second laryngeal suction tube. 210 It is connected to the second gas sampling cavity. 208 This is the second gas sampling tube. 209 It is connected to the second laryngeal suction tube. 210 and second gas sampling tube 209 The end of the device is the fourth lure connector. 211 It connects to the fourth lure joint.211 It is connected to a monitor and used to analyze the components and concentrations of gases inhaled or exhaled by the patient. Second laryngeal suction tube 210 It can also be used as a suction passage for the patient's laryngeal secretions, or as a backup gas sampling tube.

[0156] Respiratory circuit joint assembly 3 in this embodiment 00 , inner pipe assembly 4 00 , connecting pipe 5 00 This is the respiratory circuit joint assembly 3 in the above embodiment 4. 00 , inner pipe assembly 4 00 , connecting pipe 5 00 Since its structure and function are similar to that of [another system], we will omit the explanation here.

[0157] During anesthesia maintenance, tracheal conduit assembly 2 00 After it is inserted into the patient, the tracheal conduit fitting 203 to breathing circuit connector 310 Connect to the patient end and the respiratory circuit connector. 310 The end of the device is connected to the anesthesia machine or ventilator via a breathing tube. Second gas sampling tube 209 The fourth lure joint 211 It is connected to the monitor's gas sampling tube to analyze the components and concentrations of gases inhaled or exhaled by the patient. Instrument end 1 internal fitting 3 18 and equipment end external joint 3 110 It is connected to the breathing tube and breathing circuit connector. 310 Equipment terminal second internal joint 3 19 and equipment end external joint 3 110 It may be connected to a respiratory tube, and the respiratory tube is connected to an anesthesia machine or a ventilator. Equipment end 1st internal joint 3 18 , external joint at the end of the equipment 3 110 When the respiratory tube is connected to the respiratory tube and the respiratory tube is connected to the anesthesia machine or ventilator, the second internal passage 3 at the end of the equipment 14 After this, a fibrobronchoscope, a sealed sputum suction tube, a bronchial occlusion plug, etc., can be inserted.

[0158] During anesthesia maintenance, tracheal conduit assembly 2 00 After the tracheal conduit is inserted into the patient, 202 and tracheal conduit joint 203via the inner pipe assembly 4 00 You may insert the inner tube assembly 4 00 The patient end is a tracheal conduit. 202 Located at the patient end of the relatively large inner diameter portion, the tracheal conduit joint 203 and internal pipe fittings 403 Both are respiratory circuit connectors 310 It connects to the patient end. Patient end external coupling 3 17 is a tracheal conduit fitting 203 It is connected to the patient end internal coupling 3. 16 internal pipe fittings 403 It is connected to the first internal coupling 3 at the equipment end. 18 and equipment terminal external coupling 3 110 It is connected to the breathing tube, and the device end second internal coupling 3 19 and equipment terminal external coupling 3 110 It may be connected to a respiratory line, which is connected to an anesthesia machine or ventilator, eliminating some mechanical dead space. Second gas sampling tube 209 The fourth lure joint at the end 211 It is connected to the monitor's gas sampling tube to analyze the components and concentrations of gases inhaled or exhaled by the patient.

[0159] During anesthesia maintenance, tracheal conduit assembly 2 00 After it is inserted into the patient, the tracheal conduit fitting 203 is the respiratory circuit joint assembly 3 00 After connecting to the patient end, the respiratory circuit connector end cap 320 Remove the first internal joint 3 at the end of the equipment. 18 Place it there. Equipment terminal second internal joint 3 19 via the main body of the inner pipe 401 It is inserted, and the internal pipe fitting 403 and equipment end external joint 3 110 Each end is connected to the patient end of the respiratory tube, and the equipment end of the respiratory tube is connected to the anesthesia machine or ventilator. 401 As it is gradually inserted, the mechanical dead space within the airway management system gradually decreases, and the inner tube assembly 4 00 The patient end is the tracheal conduit. 202 When located at the patient end of a relatively large inner diameter portion, a portion of the mechanical dead space is eliminated.

[0160] Tracheal conduit of the present invention 202 and tracheal conduit joint 203 , or laryngeal mask conduit 102 and laryngeal mask fitting 103 The inner diameter is larger than that of conventional products, and when the patient breathes moisture spontaneously, the artificial airway resistance is lower than that of conventional products. This invention relates to a tracheal conduit. 202 and tracheal conduit joint 203 or laryngeal mask conduit 102 and laryngeal mask fitting 103 via the inner pipe assembly 4 00 It can be inserted, thereby reducing, or even eliminating, mechanical dead space. Inner tube assembly 4 00 After insertion, the third ventilation cavity 402 and second ventilation cavity 206 , third ventilation cavity 402 and the first ventilation cavity 106 Each cavity forms an inspiratory cavity and an expiratory cavity, and they are interchangeable, allowing for the determination of which cavity to use as the inspiratory cavity and which as the expiratory cavity according to clinical needs. The patient end of the gas sampling cavity is closer to the alveoli and unaffected by dead space gas interference, resulting in more sensitive and accurate sampling analysis. Laryngeal mask fitting 103 This is the expansion joint assembly 6 00 It can be connected to the patient end, and the telescopic assembly 6 00 When it extends to the point where it is fully open, the annular projection 605 Stopper 604 The laryngeal mask assembly 1 is positioned as follows: 00 and telescopic pipe assembly 6 00 via the inner pipe assembly 4 00 A stopper is inserted to eliminate mechanical dead space. 604 After removing the telescopic tube assembly 6 00 As it gradually shortens, the inner tube assembly 4 00 The patient end moves toward the patient's lungs, passes through the patient's glottis, and enters the patient's trachea, through the telescopic tube assembly 6. 00 When shortened to its initial state, the inner pipe assembly 4 00The patient end reaches into the patient's trachea, eliminating all mechanical dead space and some physiological dead space.

[0161] The embodiments described in the drawings of this application are illustrative and are intended solely to illustrate the application; they should not be understood as limiting the application. [Explanation of Symbols]

[0162] 100 Laryngeal mask assembly, 101 Mask body, 102 Laryngeal mask conduit, 103 Laryngeal mask fitting, 104 Laryngeal mask air-filled conduit, 105 Laryngeal mask air filling valve, 106 First ventilation cavity, 107 First laryngeal suction cavity, 108 First gas sampling cavity, 109 video element Cavity, 110 Drainage cavity, 111 Spare cavity, 112 First gas sampling tube, 113 1st laryngeal suction tube, 114 Third lure joint, 2 00 Tracheal conduit assembly, 201 airbags, 202 Tracheal conduit, 203 Tracheal conduit fittings, 204 Airbag air filling tube, 205 Airbag air inflation valve, 206 Second ventilation cavity, 207 Second laryngeal suction cavity, 208 Second gas sampling cavity, 209 Second gas sampling tube, 210 second laryngeal suction tube, 211 Fourth lure joint, 212 Airbag air filling cavity, 3 00 Respiratory circuit joint assembly, 310 Respiratory circuit connector, 3 11 Passage in patient end, 3 12 Passage outside patient end, 313 Equipment end 1st inner passage, 3 14 Equipment end 2nd inner passage, 3 15 Passage outside equipment end, 3 16 Patient end internal joint, 3 17 Patient end external joint, 3 18 Equipment terminal first internal joint, 3 19 Equipment terminal second internal joint, 3 110 External joint at the end of the equipment, 320 Breathing circuit connector end cap, 330 First lure joint, 4 00 Internal pipe assembly, 401 Inner tube body, 402 Third ventilation cavity, 403 Internal pipe fittings, 404 protrusion, 5 00 Connecting pipe, 501 Connecting pipe body, 502 Second lure joint, 6 00 Expansion joint assembly, 601 Telescopic tube body, 602 Expansion joint for patient end, 603 Expansion joint equipment end fittings, 604 Stopper, 605 Annular projection.

Claims

1. It is an airway management system, The device comprises a laryngeal mask assembly and an inner tube assembly, the inner tube assembly comprising an inner tube body, the inner tube body having a third ventilation cavity, the laryngeal mask assembly comprising a mask body and a laryngeal mask conduit having one end communicating with the mask body, the laryngeal mask conduit having a first ventilation cavity, the first ventilation cavity being used for inserting the inner tube assembly, The patient end of the inner tube assembly is located inside the mask body and is configured to align with the patient end of the laryngeal mask conduit, and the patient end of the inner tube assembly can be further configured to enter the patient's trachea through the patient's glottis, and after the inner tube assembly is inserted, one of the first ventilation cavity and the third ventilation cavity forms an inspiratory cavity and the other forms an expiratory cavity. The laryngeal mask assembly further comprises a laryngeal mask fitting, the other end of the laryngeal mask conduit being connected to the laryngeal mask fitting, the inner tube assembly further comprises an inner tube fitting connected to the inner tube body, the airway management system further comprises a breathing circuit fitting assembly, the breathing circuit fitting assembly comprises a breathing circuit fitting, one end of the breathing circuit fitting being connected to the laryngeal mask fitting, or connected to the laryngeal mask fitting and the inner tube fitting, and the other end of the breathing circuit fitting being configured to be connected to an anesthesia machine or respiratory machine via a breathing tube. The respiratory circuit connector is provided with a patient end, the patient end of the respiratory circuit connector is provided with an internal patient end connector and an external patient end connector, the external patient end connector is used to connect to the laryngeal mask connector, and the internal patient end connector is used to connect to the internal tube connector. The device end of the respiratory circuit joint is provided with a first internal device end joint, a second internal device end joint, and an external device end joint, and the device end of the respiratory circuit joint is provided with three passages: a first internal device end passage, a second internal device end passage, and an external device end passage, and the patient end of the respiratory circuit joint is provided with a patient end internal passage and a patient end external passage, the first internal device end passage and the second internal device end passage are connected to the patient end internal passage, the external device end passage is connected to the patient end external passage, the patient end internal passage and the patient end external passage use a coaxial internal and external double passage structure, and the first internal device end joint and the external device end joint or the second internal device end joint and the external device end joint are each connected to the anesthesia machine or the respiratory machine via the respiratory tube. Airway management system.

2. The airway management system further comprises an expandable tube assembly, the expandable tube assembly comprising an expandable tube patient end fitting, an expandable tube device end fitting, and an expandable tube body, the expandable tube patient end fitting being connected to one end of the expandable tube body, the expandable tube device end fitting being connected to the other end of the expandable tube body, the expandable tube patient end fitting being configured to connect to the laryngeal mask fitting, the inner tube assembly being configured to be inserted via the laryngeal mask conduit, the laryngeal mask fitting, and the expandable tube assembly, and the expandable tube device end fitting and the inner tube fitting being used to connect to the patient end of the breathing circuit fitting. When the telescopic tube assembly is fully extended, the patient end of the inner tube assembly is positioned over the patient's glottis, and as the telescopic tube assembly is gradually retracted, the patient end of the inner tube assembly moves towards the patient's lungs, passes through the patient's glottis, and enters the patient's trachea. The airway management system according to claim 1.

3. The expansion joint assembly further comprises annular projections and a stopper, the annular projections being positioned on the outer walls of the expansion joint patient end joint and the expansion joint equipment end joint, respectively, the stopper being used to restrict the position of the expansion joint assembly, and when the expansion joint assembly is extended to a fully open state, the stopper is positioned between the annular projections. The airway management system according to claim 2.

4. The laryngeal mask conduit is further provided with a first gas sampling cavity and a first laryngeal suction cavity. The airway management system according to claim 1.

5. A drainage cavity is further provided within the laryngeal mask conduit. The airway management system according to claim 4.

6. A video element cavity is further provided within the laryngeal mask conduit. The airway management system according to claim 5.

7. A spare cavity is provided within the laryngeal mask conduit. The airway management system according to claim 6.

8. The patient end of the first gas sampling cavity and the patient end of the first laryngeal suction cavity are close to the patient end of the laryngeal mask conduit, and the first gas sampling cavity and the first laryngeal suction cavity within the laryngeal mask conduit are fixed together for use. The airway management system according to any one of claims 1, 4 to 7.

9. The airway management system further comprises a connecting tube, the connecting tube having an unequal diameter structure, the connecting tube comprising a connecting tube body, and when performing anesthetic induction in a clinical setting, one end of the connecting tube body is configured to connect to the patient end of the breathing circuit connector, and the other end of the connecting tube body is configured to connect to an anesthetic mask. The airway management system according to claim 1.

10. Multiple protrusions are provided on the outer wall of the inner tube body, and these protrusions are used to position the inner tube body and the first ventilation cavity. The airway management system according to claim 1.

11. The respiratory circuit joint assembly further comprises a respiratory circuit joint tip cap, the tip of the second internal joint at the device end is provided with the retractable respiratory circuit joint tip cap, and the respiratory circuit joint tip cap is configured to be connectable to the first internal joint at the device end. The airway management system according to claim 1.

12. The breathing circuit joint assembly further comprises a first Luer joint, the first Luer joint being connected to the center of the end cap of the breathing circuit joint. The airway management system according to claim 11.

13. The connecting pipe further comprises a second Luer fitting, the second Luer fitting configured to connect to the gas sampling tube of the monitor. The airway management system according to claim 9.

14. It is an airway management system, The system comprises a tracheal conduit assembly and an inner tube assembly, the inner tube assembly comprising an inner tube body, the inner tube body having a third ventilation cavity, the tracheal conduit assembly comprising a tracheal conduit, the tracheal conduit having a second ventilation cavity, the second ventilation cavity being used for insertion of the inner tube assembly, and after the inner tube assembly is inserted, one of the second ventilation cavity and the third ventilation cavity forms an inspiratory cavity, and the other forms an expiratory cavity. The tracheal conduits may have the same inner diameter, and the patient end of the inner tube assembly may be configured to align with the patient end of the tracheal conduit, and the patient end of the inner tube assembly may be configured to enter the patient's trachea via the patient end of the tracheal conduit, or The inner diameter of the tracheal conduit is designed such that the inner diameter located next to the patient's glottis during use is smaller than the inner diameter located ahead of the patient's glottis during use, and the patient end of the inner tube assembly is configured to be located at the patient end of the larger inner diameter portion of the tracheal conduit, which has an unequal diameter structure. The tracheal conduit assembly further comprises a tracheal conduit joint, the inner tube assembly further comprises an inner tube joint connected to the inner tube body, the airway management system further comprises a respiratory circuit joint assembly, the respiratory circuit joint assembly comprises a respiratory circuit joint, one end of the respiratory circuit joint is connected to the tracheal conduit joint, or is connected to the tracheal conduit joint and the inner tube joint, and the other end of the respiratory circuit joint is configured to be connected to an anesthesia machine or respiratory machine via a respiratory tube. The respiratory circuit joint comprises a patient end, the patient end comprises a patient end internal joint and a patient end external joint, the patient end external joint is used to connect to the tracheal conduit joint, and the patient end internal joint is used to connect to the internal tube joint. The device end of the respiratory circuit joint is provided with a first internal device end joint, a second internal device end joint, and an external device end joint, and the device end of the respiratory circuit joint is provided with three passages: a first internal device end passage, a second internal device end passage, and an external device end passage, and the patient end of the respiratory circuit joint is provided with a patient end internal passage and a patient end external passage, the first internal device end passage and the second internal device end passage are connected to the patient end internal passage, the external device end passage is connected to the patient end external passage, the patient end internal passage and the patient end external passage use a coaxial internal and external double passage structure, and the first internal device end joint and the external device end joint or the second internal device end joint and the external device end joint are each connected to the anesthesia machine or the respiratory machine via the respiratory tube. The tracheal conduit is further provided with a second laryngeal suction cavity, a second gas sampling cavity, and an airbag air filling cavity. The patient end of the second gas sampling cavity and the patient end of the second laryngeal suction cavity are close to the patient end of the tracheal conduit, and the second gas sampling cavity and the second laryngeal suction cavity are fixed together for use. Airway management system.

15. The respiratory circuit joint assembly further comprises a respiratory circuit joint tip cap, the tip of the second internal joint at the device end is provided with the retractable respiratory circuit joint tip cap, and the respiratory circuit joint tip cap is configured to be connectable to the first internal joint at the device end. The airway management system according to claim 14.

16. The breathing circuit joint assembly further comprises a first Luer joint, the first Luer joint being connected to the center of the end cap of the breathing circuit joint. The airway management system according to claim 15.

17. The airway management system further comprises a connecting tube, the connecting tube having an unequal diameter structure, the connecting tube comprising a connecting tube body, and when performing anesthetic induction in a clinical setting, one end of the connecting tube body is configured to connect to the patient end of the breathing circuit connector, and the other end of the connecting tube body is configured to connect to an anesthetic mask. The airway management system according to claim 14.

18. The connecting pipe further comprises a second Luer fitting, the second Luer fitting configured to connect to the gas sampling tube of the monitor. The airway management system according to claim 17.

19. Multiple protrusions are provided on the outer wall of the inner tube body, and these protrusions are used to position the inner tube body and the second ventilation cavity. The airway management system according to claim 14.

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