Laryngeal mask and use method therefor

Abstract

Embodiments of the present disclosure provide a laryngeal mask and a use method therefor, relating to the technical field of medical devices. The laryngeal mask comprises a laryngeal mask main body, a cuff, a resilient member, and a locking assembly. The cuff itself is elastic and is internally provided with a compression space and the resilient member, and the compression space is in communication with an openable and closable negative pressure channel, so that the cuff can be compressed, and the negative pressure channel can be closed by means of the locking assembly, so as to maintain the cuff in a compressed state, thereby reducing the volume of the laryngeal mask before insertion of the laryngeal mask, and thus facilitating insertion and reducing the difficulty of insertion and reliance on operation skills. After the laryngeal mask is inserted in place, the negative pressure channel is opened again by means of the locking assembly, and the cuff adaptively expands under the elastic action of the cuff itself and the resilient member until the cuff fits the unique anatomical structure of the larynx of a patient, so as to better adapt to differences in the lumens of different patients, thereby forming a highly sealed closure at the laryngeal inlet, and thus improving ventilation safety.

Description

Laryngeal mask and its usage

[0001] Cross-reference of related applications

[0002] This disclosure claims priority to Chinese Patent Application No. 202511603270.6, filed on November 4, 2025, entitled "Laryngeal Mask and Method of Use Thereof," and Chinese Patent Application No. 202510232008.9, filed on February 28, 2025, entitled "Laryngeal Mask Airway," the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of medical device technology, and more specifically, to a laryngeal mask and its method of use. Background Technology

[0004] Establishing a reliable artificial airway is crucial in clinical anesthesia and emergency care. The laryngeal mask airway, as a supraglottic ventilation tool, has become an indispensable device due to its simpler operation compared to endotracheal intubation and its effectiveness in managing "difficult airways."

[0005] Currently, laryngeal masks are mainly divided into two types: inflatable and non-inflatable. Inflatable laryngeal masks seal the larynx by inflating the bladder, but their large volume after inflation can easily cause excessive pressure on the pharyngeal tissues, posing a risk of damage. Furthermore, the inflation volume depends on the physician's experience, carrying the risk of incomplete sealing, leakage, or excessive pressure. To avoid the drawbacks of inflatable masks, non-inflatable laryngeal masks have been developed. Non-inflatable laryngeal masks are pre-formed into a fixed shape using elastic materials and do not require inflation after insertion.

[0006] However, to ensure support and a seal, non-inflatable laryngeal masks typically have a certain degree of rigidity, resulting in a larger size, making insertion inconvenient, and requiring a high level of operational skill. Furthermore, laryngeal masks are pre-fabricated into a predetermined shape, which may not adapt well to the cavities of different patients, potentially leading to incomplete seals and compromising ventilation safety.

[0007] Public content

[0008] The purpose of this disclosure is to provide a laryngeal mask to alleviate the technical problems of existing non-inflatable laryngeal masks, which are large in size, inconvenient to insert, and have different adaptability, which may lead to poor sealing.

[0009] This disclosure provides a laryngeal mask, including: a laryngeal mask body, a mask bladder, a spring-loaded component, and a locking assembly.

[0010] An airflow channel is formed inside the main body of the laryngeal mask.

[0011] The bladder is located at one end of the laryngeal mask body and on one side of the laryngeal mask body. The bladder is arranged circumferentially along the laryngeal mask body and surrounds one side of the laryngeal mask body to form an air vent that communicates with the airflow channel. The bladder is elastic and has a compression space inside.

[0012] The rebound element is located in the compression space and is in contact with the inner wall of the cover.

[0013] The locking component has a negative pressure channel that is connected to and can be opened and closed in the compression space.

[0014] Optionally, a transmission channel is also formed within the laryngeal mask body.

[0015] One end of the transmission channel is connected to the shroud and communicates with the compression space, while the other end is connected to the locking assembly and communicates with the negative pressure channel.

[0016] Optionally, the laryngeal mask body includes an insertion portion and a conduction portion.

[0017] The insertion part has an installation end on one side and is provided with a first through hole that communicates with the airflow channel. The cover is located at the installation end.

[0018] The conductive part has an arc-shaped structure and one end is connected to the insertion part. The airflow channel and the transmission channel are both located inside the conductive part, and the locking component is connected to the conductive part.

[0019] Optionally, the laryngeal mask also includes an air supply connector.

[0020] An air source port is formed at the end of the airflow channel away from the mask and at the end of the conduction part away from the insertion part; a negative pressure port is formed at the end of the transmission channel away from the mask and at the end of the conduction part away from the insertion part.

[0021] The gas source connector is connected to the gas source port and configured to connect to the gas source device.

[0022] The negative pressure port is connected to the locking component.

[0023] Optionally, the laryngeal mask body is also provided with a drainage channel and an air intake channel.

[0024] A drainage port is provided at the end of the insertion part away from the conductive part.

[0025] One end of the drainage channel and the air intake channel are connected to the drainage port, and the other end of the conductive part away from the insertion part is respectively formed with a drainage pipe port and an air intake port.

[0026] Optionally, the locking assembly includes an intake tube and a locking element.

[0027] The inhalation tube is inserted into the laryngeal mask body, and the transmission channel is located in the inhalation tube.

[0028] A locking element is provided on the air intake pipe, and the locking clamp can close the transmission channel.

[0029] Optionally, the locking element is a stop clamp.

[0030] The flow stop clamp is installed on the air intake pipe and can clamp the air intake pipe to close the transmission channel.

[0031] Optionally, the laryngeal mask body is adhesively bonded to the mask bladder to form a sealing structure at the connection.

[0032] Optionally, the spring element is made of a porous elastic material.

[0033] The shape of the spring-loaded component is adapted to the compression space.

[0034] Optionally, the rebound element is a medical sponge.

[0035] Optionally, the shroud is made of a polymer material.

[0036] Optionally, the material used for the hood has a Shore hardness of less than 40.

[0037] Optionally, the material used for the shroud has a Shore hardness of 4 to 12.

[0038] Optionally, the diaphragm is made of medical-grade silicone or polyurethane.

[0039] This disclosure also provides a method for using a laryngeal mask, applied to the provided laryngeal mask, the method of use including:

[0040] The bladder and the spring are compressed to expel air from the compressed space.

[0041] Adjust the locking component to close the negative pressure channel.

[0042] Lubricant is applied to the end of the bladder and the laryngeal mask body where the bladder is located.

[0043] Insert the laryngeal mask body into the mouth until the mask reaches the preset position.

[0044] Adjust the locking component to open the negative pressure channel.

[0045] The beneficial effects provided by this embodiment include:

[0046] In this embodiment, the laryngeal mask itself is elastic and has an internal compression space and a rebound element. The compression space is connected to an openable and closable negative pressure channel, allowing the mask to be compressed. The negative pressure channel can be closed by a locking component to keep the mask in a compressed state, thereby reducing the volume of the laryngeal mask before insertion, making insertion easier and reducing the dependence on operational skills. After the laryngeal mask is inserted, the negative pressure channel is reopened by the locking component. The mask adaptively expands under the elastic action of itself and the rebound element until it conforms to the unique anatomical structure of the patient's larynx, which can better adapt to the differences in the cavities of different patients, thereby forming a highly airtight seal at the larynx and improving ventilation safety. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0048] Figure 1 is a schematic diagram of the structure of the laryngeal mask provided in an embodiment of this disclosure;

[0049] Figure 2 is a schematic diagram of the split structure of the laryngeal mask provided in an embodiment of this disclosure;

[0050] Figure 3 is a schematic diagram of the positional relationship of the airflow channels in the laryngeal mask provided in the embodiment of this disclosure;

[0051] Figure 4 is a schematic diagram showing the positional relationship between the transmission channel and the air intake channel in the laryngeal mask provided in an embodiment of this disclosure;

[0052] Figure 5 is a schematic diagram of the drainage channel in the laryngeal mask provided in an embodiment of this disclosure;

[0053] Figure 6 is a structural schematic diagram of the laryngeal mask locking assembly provided in an embodiment of this disclosure.

[0054] icon:

[0055] 100. Laryngeal mask body; 101. Insertion part; 102. Conducting part; 110. Airflow channel; 120. Transmission channel; 130. Drainage channel; 140. Intake channel; 200. Mask bladder; 300. Rebound component; 400. Locking assembly; 410. Inhalation tube; 420. Locking component; 500. Air source connector. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The components of the embodiments of this disclosure described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0057] Therefore, the following detailed description of the embodiments of this disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0058] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0059] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0060] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0061] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0062] The present disclosure will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0063] Please refer to Figures 1 to 6. The laryngeal mask provided in this embodiment includes: a laryngeal mask body 100, a mask 200, a spring-loaded component 300, and a locking assembly 400.

[0064] An airflow channel 110 is formed inside the laryngeal mask body 100. A bladder 200 is located at one end of the laryngeal mask body 100 and on one side of the body. The bladder 200 is arranged circumferentially around the laryngeal mask body 100 and encloses one side of the body to form an air vent communicating with the airflow channel 110. The bladder 200 is elastic and has a compression space inside. A rebound member 300 is located in the compression space and is in contact with the inner wall of the bladder 200. The locking assembly 400 has a negative pressure channel that communicates with the compression space and can be opened and closed.

[0065] Specifically, in this embodiment, before the laryngeal mask is inserted, the air in the compression space of the mask 200 is extracted by manually pressing the mask 200 or making the mask 200 compressible, or by using a negative pressure generator to extract the air in the compression space of the mask 200 through the negative pressure channel, so that the mask 200 is actively compressed under negative pressure and its volume is significantly reduced.

[0066] Subsequently, the negative pressure channel is closed by locking component 400 to seal the outlet of the compression space, and the mask 200 remains in a compressed state, thereby reducing the volume of the laryngeal mask. This allows the laryngeal mask to actively change from a larger preset working state to a temporary, smaller compressed state, reducing insertion resistance and the risk of scratching surrounding tissues, thus making insertion easier and reducing the dependence on operating skills.

[0067] After the laryngeal mask airway is inserted, the locking component 400 can be adjusted again to open the negative pressure channel. External air then enters the compression space. Once the external pressure is released, the elastic restoring force of the bag 200 itself, combined with the elastic restoring force of the elastic restoring component 300, drives the bag 200 to expand freely outward from its compressed state until the outer surface of the bag 200 closely conforms to the patient's unique laryngeal anatomy. This structure ensures that the final shape of the bag 200 is not a fixed, preset shape, but a dynamically formed, personalized sealing interface determined by the patient's own anatomy and the characteristics of the elastic restoring component 300. This adapts to the differences in the cavities of different patients, thereby creating a highly airtight seal at the laryngeal opening and improving ventilation safety.

[0068] In this embodiment, a transmission channel 120 is also formed within the laryngeal mask body 100.

[0069] One end of the transmission channel 120 is connected to the shroud 200 and communicates with the compression space, while the other end is connected to the locking component 400 and communicates with the negative pressure channel.

[0070] The transmission channel 120 is a dedicated channel connecting the compression space and the locking component 400. When the mask 200 is pressed, the air in the compression space can be smoothly discharged through the transmission channel 120. After the laryngeal mask is inserted into place, the negative pressure channel is opened through the locking component 400, and the external air can flow back into the compression space smoothly and without obstruction through the transmission channel 120.

[0071] This structure ensures that the rebound element 300 can obtain recovery space in a timely and uniform manner, thereby driving the ventilator 200 to expand smoothly until it achieves a complete and tight adaptive fit with the patient's laryngeal anatomy. This avoids incomplete recovery or local wrinkles of the ventilator 200 due to poor gas return, thus improving the quality of the final sealing interface and ventilation safety.

[0072] Furthermore, in this embodiment, the transmission channel 120 is built into the laryngeal mask body 100, making the overall structure of the laryngeal mask more compact and more integrated, avoiding the risk of interference or damage that may be caused by exposed pipelines, making the overall structure stronger and the operation process simpler and more intuitive.

[0073] Referring to Figure 3, in this embodiment, the laryngeal mask body 100 includes an insertion part 101 and a transmission part 102.

[0074] The insertion part 101 has an installation end on one side and is provided with a first through hole that communicates with the airflow channel 110. The cover 200 is located at the installation end.

[0075] The conduction part 102 has an arc-shaped structure and one end is connected to the insertion part 101. The airflow channel 110 and the transmission channel 120 are both located inside the conduction part 102. The locking component 400 is connected to the conduction part 102.

[0076] The insertion part 101 is configured to install the mask 200 and establish a preliminary ventilation interface, and the conduction part 102 is configured to guide and support the internal channel. With this structure, the overall structure of the laryngeal mask is more reasonable, and the components can work together better, which not only ensures the functionality of the insertion end, but also optimizes the passability and operability of the catheter part.

[0077] Specifically, in this embodiment, the transmission part 102 adopts an arc-shaped structure to conform to the natural physiological curvature of the human throat, making the path of the laryngeal mask inserted through the mouth to the larynx smoother and more natural, reducing unnecessary contact and resistance with oral and pharyngeal tissues, and making the insertion action easier to control.

[0078] The airflow channel 110 and the transmission channel 120 are integrated within the arc-shaped conduction section 102, thereby ensuring the stability of gas transmission while avoiding entanglement and interference from external pipelines. This also allows for a more centralized and ergonomic control position for the locking assembly 400. This structure ensures more reliable maintenance of the laryngeal mask's compression state during insertion, and facilitates easier opening of the locking assembly 400 once the designated position is reached. This, in turn, ensures that the mask 200 can form a stable and adaptive seal, improving the final ventilation safety and sealing effect.

[0079] Referring to Figures 2 and 3, in this embodiment, the laryngeal mask also includes an air source connector 500.

[0080] An air source port is formed at the end of the airflow channel 110 away from the cover 200 and at the end of the conduction section 102 away from the insertion section 101. A negative pressure port is formed at the end of the transmission channel 120 away from the cover 200 and at the end of the conduction section 102 away from the insertion section 101. The air source connector 500 is connected to the air source port and configured to connect to an air source device. The negative pressure port is configured to connect to the locking assembly 400.

[0081] In this embodiment, the air source connector 500 provides a standard and robust interface for connecting the ventilation equipment, ensuring the airtightness and reliability of the ventilation circuit connection. The negative pressure port is configured to connect to the locking assembly 400, making the configuration of the shape-controlled structure more compact and centralized. With this structure, the doctor can firmly hold the conduction part 102 with one hand and easily operate the locking assembly 400 without worrying about accidentally activating the ventilation circuit.

[0082] Specifically, in this embodiment, the airflow channel 110 and the transmission channel 120 terminate at independent air source ports and negative pressure ports respectively at their ends away from the hood 200, so that ventilation and compression / recovery have independent paths that do not interfere with each other. With this structure, ventilation via the air source device and control of the hood 200's shape via the locking component 400 can be performed synchronously and independently, avoiding mutual coupling and potential influence between functions, resulting in a clear operational logic.

[0083] Please refer to Figures 4 and 5 again. In this embodiment, the laryngeal mask body 100 is also provided with a drainage channel 130 and an air intake channel 140.

[0084] A drainage port is provided at the end of the insertion part 101 away from the conduction part 102. One end of the drainage channel 130 and the air intake channel 140 are connected to the drainage port, and the other end of the conduction part 102 away from the insertion part 101 is respectively provided with a drainage pipe port and an air intake port.

[0085] Specifically, after the laryngeal mask is inserted into the preset position and fixed, a gastric tube can be inserted into the drainage channel 130, thus providing a dedicated path for gastrointestinal drainage. Gastric fluid or gas can be discharged through the gastric tube, thereby reducing the risk of gastric contents reflux and aspiration during the operation. At the same time, the independent air intake channel 140 allows external air to enter during drainage, avoiding the formation of a closed negative pressure at the esophageal opening during aspiration. This not only prevents the esophageal mucosa from being absorbed and damaged, but also ensures the smoothness and safety of the drainage process.

[0086] The drainage channel 130, air intake channel 140, airflow channel 110, and transmission channel 120 are all integrated within the insertion part 101 and the arc-shaped conduction part 102. This structure ensures the smoothness of the overall contour of the laryngeal mask and avoids affecting its insertion passability or operation feel due to external additional tubing, so that doctors will not be interfered with by additional tubing when performing key insertion and positioning operations.

[0087] Furthermore, in this embodiment, the drainage tube and air inlet are located at the end of the conduction section 102 and are spaced apart from the air source interface, realizing centralized management of multiple external functional interfaces. Under this structure, it is convenient for medical staff to quickly and orderly connect the various functional tubes (ventilation, drainage) after the laryngeal mask is inserted, simplifying the subsequent operation process and improving clinical efficiency.

[0088] Referring to Figure 6, in this embodiment, the locking component 400 includes an air intake tube 410 and a locking member 420.

[0089] The inhalation tube 410 is inserted into the laryngeal mask body 100, and the transmission channel 120 is provided in the inhalation tube 410. The locking member 420 is provided in the inhalation tube 410, and the locking clamp can close the transmission channel 120.

[0090] Once the laryngeal mask reaches the designated position in the larynx, the operator only needs to open the closed channel through the locking element 420, and external air can quickly enter the compression space through the suction tube 410 and the transmission channel 120, so that the mask 200 can fit the larynx anatomical structure in a timely and sufficient manner, thereby achieving excellent dynamic sealing.

[0091] In this embodiment, the inhalation tube 410 serves as the direct carrier of the transmission channel 120. The inhalation tube 410 is connected to the laryngeal mask body 100 via a plug-in connection to form an airflow path. The transmission channel 120 can be reliably closed by operating the locking element 420 (such as a flow stop clamp or a stop valve). This ensures that the compressed state of the mask 200 is firmly locked after manual expulsion of air, effectively preventing accidental expansion of the mask 200 due to gas backflow during insertion. This ensures that the laryngeal mask can pass through the pharyngeal bend with minimal volume, thereby alleviating the problem of inconvenient insertion.

[0092] Optionally, in this embodiment, the locking member 420 is a flow stop clamp. The flow stop clamp is disposed on the suction pipe 410 and can clamp the suction pipe 410 to close the transmission channel 120.

[0093] The flow-stop clamp physically seals the transmission channel 120 by directly clamping the inhalation tube 410, ensuring high reliability and effectively guaranteeing that the mask 200 maintains a stable, minimally compressed volume during insertion, preventing accidental expansion due to air leakage and significantly reducing resistance when passing through the pharyngeal bend. Furthermore, the flow-stop clamp is a mature medical device component in existing technology, and its operation (clamping and releasing) is simple and intuitive for medical personnel. In surgical or emergency settings, the entire operation can be completed quickly and accurately with one hand, making laryngeal mask insertion smoother and more efficient.

[0094] Optionally, the locking element 420 can also be a plug valve, which is installed on the suction pipe and located on the transmission channel 120. By rotating the valve core, the through hole inside the plug valve is aligned or misaligned with the flow channel of the valve body to open or close the transmission channel 120. The plug valve can fully open, fully close, or partially open the transmission channel 120, allowing for more precise graded regulation of the flow rate. Depending on the material of the suction pipe 410, the plug valve and the suction pipe 410 can be connected by a threaded connection, a quick-connect fitting, or a flange connection; no limitation is made here. A sealing element, such as a sealing ring, can be installed at the connection between the plug valve and the suction pipe to improve the overall sealing performance.

[0095] In this embodiment, the laryngeal mask body 100 and the mask bladder 200 are glued together to form a sealing structure at the connection.

[0096] Adhesive bonding ensures airtightness at the joint, preventing gas leakage from the compression space at the junction of the bladder 200 and the laryngeal mask body 100. This ensures that when air is drawn through the negative pressure channel, the compression space can form an effective negative pressure, allowing the bladder 200 to remain stably compressed.

[0097] Furthermore, the adhesive bonding method can establish a strong mechanical bond between the laryngeal mask body 100 and the soft mask 200, so that the connection can withstand various stresses generated by the mask 200 during repeated compression, rebound and insertion, preventing the connection from loosening or tearing, thereby improving the structural strength and service life of the product and ensuring the functional stability of the laryngeal mask throughout the entire use process.

[0098] Optionally, the bladder 200 and the laryngeal mask body 100 can also be connected by thermocompression welding. Precise heating and pressurization of the connection area melts and fuses the contact surfaces of the bladder 200 and the compatible thermoplastic. This creates a homogeneous material transition zone, eliminating adhesive brittleness, better transferring and dispersing stress, and withstanding repeated compression and rebound. It also achieves a seamless seal, preventing leakage.

[0099] In this embodiment, the shroud 200 is made of polymer material.

[0100] Medical-grade silicone or polyurethane and other polymer materials have excellent elasticity and flexibility, which allows the bladder 200 to deform smoothly and reduce its volume under external pressure, and after the pressure is released, it can smoothly and easily return to the predetermined shape following the drive of the internal rebound component 300.

[0101] Meanwhile, medical-grade polymer materials have good biocompatibility and a smooth surface, which reduces irritation and damage to the pharyngeal mucosa and improves the safety of clinical use of the product.

[0102] In addition, polymer materials can be processed through mature injection molding or blow molding processes, which makes it easy to precisely control the uniformity of the wall thickness and the overall shape of the bladder 200, thereby ensuring the consistency and reliability of product performance.

[0103] It should be noted that, in order to ensure safety, the material used for the bladder 200 should have a Shore hardness of less than 40, and it is more appropriate to choose a Shore hardness between 4 and 12. In this embodiment, the bladder 200 is specifically made of medical silicone material with a Shore hardness of 10A.

[0104] Optionally, in this embodiment, the spring element 300 is made of a porous elastic material.

[0105] The shape of the spring-loaded component 300 is adapted to the compression space so that the spring-loaded component 300 fills the compression space.

[0106] Specifically, the porous elastic material contains a large number of interconnected pores, giving it extremely high compressibility. When air is pumped out through a negative pressure channel or manually pressed, the air inside the material is quickly expelled, resulting in significant volume shrinkage.

[0107] After the pressure is released, the porous elastic material can quickly draw in air through its elasticity and capillary action, returning to its original shape that fills the compressed space. Moreover, the recovery deformation of the porous elastic material is not a simple shape memory, but a flexible inward support that can conform to the surrounding structure, thereby driving the outer wall of the bladder 200 to dynamically and uniformly conform to the unique laryngeal anatomical contours of different patients, forming a personalized sealing interface.

[0108] Furthermore, in this embodiment, the spring-loaded element 300 fills the entire compression space, thus providing the cover 200 with all-around, uniform support without any blind spots. This structure avoids situations where the local support force is insufficient or excessive, ensuring a stable distribution of sealing pressure. In addition, the porous structure also has the advantages of being lightweight and fatigue-resistant, ensuring the durability of the product.

[0109] The porous elastic material itself has flexible properties, so that the support of the rebound element 300 to the cap 200 is "soft" rather than rigid, thereby improving the patient's comfort and reducing the risk of mucosal damage.

[0110] Optionally, in this embodiment, the rebound element 300 is specifically a medical sponge. Alternatively, the rebound element 300 can also be made of polymer foam materials, such as polyurethane foam, which has good elasticity, breathability, and liquid absorption, allowing it to better conform to the shape of the pressure-applying object and distribute pressure evenly; or it can be rubber foam (such as neoprene rubber, silicone foam, or EPDM foam), which typically has excellent sealing properties, aging resistance, ozone resistance, and a wider temperature range. Silicone foam also has excellent biocompatibility and chemical resistance.

[0111] The method of using the laryngeal mask provided in this embodiment includes:

[0112] S100, the compression bladder 200 and the spring member 300 are used to expel the air in the compression space.

[0113] S200, Adjust the locking component 400 to close the negative pressure channel.

[0114] S300, apply lubricant to the end of the larynx mask 200 and the laryngeal mask body 100 where the larynx mask 200 is located.

[0115] S400, insert the laryngeal mask body 100 into the mouth until the mask 200 reaches the preset position.

[0116] S500, adjust the locking component 400 to open the negative pressure channel.

[0117] Specifically, steps S100 to S300 are preparatory steps before insertion.

[0118] Before insertion, the mask 200 and the rebound element 300 need to be actively compressed to their minimum volume to form a streamlined and compact front end, thereby reducing the contact area and frictional resistance between the laryngeal mask and surrounding tissues when passing through physiological curves such as the oral cavity and pharynx, thus alleviating the technical problem of "large volume and inconvenient insertion".

[0119] Once the laryngeal mask airway reaches the preset position, the locking component 400 is activated, allowing outside air to enter the compression space. The internal rebound element 300 then drives the cuff 200 to expand freely, rather than returning to a preset fixed shape. The outer surface of the cuff 200 gently and passively conforms to the patient's unique laryngeal anatomy, achieving a close fit with the larynx and excellent airtightness. Furthermore, the operation process is logically clear and highly controllable, reducing reliance on operator experience and improving insertion success rate and ventilation safety.

[0120] The preset location is the laryngopharynx. The tip of the bag 200 should be positioned above the upper esophageal sphincter (the opening of the esophagus), while the sides and bottom of the bag 200 should completely and gently cover the laryngeal inlet (including the epiglottis and glottis).

[0121] When the tip of the bag 200 enters the pharynx and abuts against the upper esophageal sphincter, the operator will feel a clear, gentle "resistance," indicating that the insertion depth is sufficient.

[0122] After releasing the bladder 200 (such as releasing the locking assembly 400), a slight but definite tendency to move outward can be observed or felt throughout the laryngeal mask airway, indicating that the spring 300 is pushing the bladder 200 to fit tightly against the laryngeal structure.

[0123] Furthermore, during the final confirmation of the position, the airflow channel 110 can be manually ventilated by connecting an air source, while simultaneously listening for breath sounds in both lungs and gurgling sounds in the stomach with a stethoscope, and observing chest rise and fall. If the chest rise and fall is good, the breath sounds in both lungs are clear, and there are no gurgling sounds in the stomach, then the laryngeal mask is confirmed to be in the ideal "preset position".

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure. Industrial applicability

[0125] In summary, the present disclosure provides a laryngeal mask and its usage method, which can alleviate the technical problems of existing non-inflatable laryngeal masks being bulky, inconvenient to insert, and having different adaptability, which may lead to poor sealing.

Claims

1. A laryngeal mask airway, characterized in that, include: The laryngeal mask body (100) has an airflow channel (110) inside; A bladder (200) is disposed at one end of the laryngeal mask body (100) and located on one side of the laryngeal mask body (100). The bladder (200) is arranged circumferentially along the laryngeal mask body (100) and surrounds one side of the laryngeal mask body (100) to form an air vent that communicates with the airflow channel (110). The bladder (200) is elastic and has a compression space inside. A spring-loaded element (300) is disposed in the compression space and is in contact with the inner wall of the cover (200); The locking component (400) has a negative pressure channel that is connected to and can be opened and closed in the compression space.

2. The laryngeal mask according to claim 1, characterized in that, The laryngeal mask body (100) also contains: The transmission channel (120) is connected at one end to the cover (200) and communicates with the compression space, and at the other end to the locking component (400) and communicates with the negative pressure channel.

3. The laryngeal mask according to claim 2, characterized in that, The laryngeal mask body (100) includes: an insertion part (101) and a transmission part (102); The insertion part (101) has an installation end on one side and is provided with a first through hole that communicates with the airflow channel (110). The cover (200) is located at the installation end. The conductive part (102) has an arc-shaped structure and one end is connected to the insertion part (101). The airflow channel (110) and the transmission channel (120) are both located in the conductive part (102). The locking component (400) is connected to the conductive part (102).

4. The laryngeal mask according to claim 3, characterized in that, The laryngeal mask also includes an air source connector (500); An air source port is formed at one end of the airflow channel (110) away from the cover (200) and at one end of the conduction part (102) away from the insertion part (101); a negative pressure port is formed at one end of the transmission channel (120) away from the cover (200) and at one end of the conduction part (102) away from the insertion part (101). The gas source connector (500) is connected to the gas source port and configured to connect to a gas source device; The negative pressure port is connected to the locking component (400).

5. The laryngeal mask according to claim 3 or 4, characterized in that, The laryngeal mask body (100) is also provided with a drainage channel (130) and an air intake channel (140); A drainage port is provided at the end of the insertion part (101) away from the conduction part (102); One end of the drainage channel (130) and the air intake channel (140) are connected to the drainage port, and the other end of the conductive part (102) at the end away from the insertion part (101) is respectively formed with a drainage port and an air intake port.

6. The laryngeal mask according to any one of claims 2-5, characterized in that, The locking assembly (400) includes: an air intake tube (410) and a locking element (420); The inhalation tube (410) is inserted into the laryngeal mask body (100), and the transmission channel (120) is located in the inhalation tube (410); A locking element (420) is provided on the air intake pipe (410), and the locking clamp is capable of closing the transmission channel (120).

7. The laryngeal mask according to claim 6, characterized in that, The locking element (420) is a stop clamp; The flow stop clamp is disposed on the air intake pipe (410) and can clamp the air intake pipe (410) to close the transmission channel (120).

8. The laryngeal mask according to any one of claims 1-7, characterized in that, The laryngeal mask body (100) is glued to the mask bladder (200) to form a sealing structure at the connection.

9. The laryngeal mask airway according to any one of claims 1-8, characterized in that, The spring element (300) is made of a porous elastic material; The shape of the spring-loaded component (300) is adapted to the compression space.

10. The laryngeal mask according to claim 9, characterized in that, The rebound component (300) is a medical sponge.

11. The laryngeal mask airway according to any one of claims 1-10, characterized in that, The shroud (200) is made of polymer material.

12. The laryngeal mask according to claim 11, characterized in that, The material used for the shroud (200) has a Shore hardness of less than 40.

13. The laryngeal mask according to claim 12, characterized in that, The material used for the shroud (200) has a Shore hardness of 4 to 12.

14. The laryngeal mask according to any one of claims 11-13, characterized in that, The diaphragm (200) is made of medical-grade silicone or polyurethane.

15. A method of using a laryngeal mask airway, characterized in that, Applied to a laryngeal mask as described in any one of claims 1-14; the method of use includes: The bladder (200) and the spring member (300) are compressed to expel air from the compressed space; Adjust the locking component (400) to close the negative pressure channel; Lubricant is applied to the end of the bladder (200) and the laryngeal mask body (100) where the bladder (200) is located; Insert the laryngeal mask body (100) into the mouth until the mask (200) reaches the preset position; Adjust the locking component (400) to open the negative pressure channel.

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