An automatic inflation laryngeal mask ventilation device

Abstract

This invention patent belongs to the technical field of medical devices, and specifically discloses an automatic inflation laryngeal mask ventilation device, which includes a sealing balloon, a main body tube and a connector. The main body tube includes a mask body, a ventilation tube and a drainage tube. The sealing balloon surrounds the outside of the mask body. The main body tube is formed according to the natural curvature of the oral and pharyngeal airways. The main body tube is divided into a juxtaposed ventilation tube and a drainage tube. The mask body is connected to the proximal end of the main body tube, and the mask body has a mask abdomen forming a concave inner cavity and a mask back on the opposite side. The mask abdomen is communicated with the ventilation tube. The mask back is attached with a back balloon plate. A groove is provided on the surface of the back balloon plate that fits with the mask back to cooperate with the mask back to form a sealed cavity. The mask abdomen of the mask body is provided with a ventilation hole communicating with the cavity. A sealing gasket is provided on the surface of the mask body that contacts the laryngeal vocal cords department. This invention is simple and effective in operation, safe and convenient, and can effectively reduce injuries and establish an artificial airway of the laryngeal mask.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an automatic inflation laryngeal mask ventilation device. Background Art

[0002] As an effective means for airway management, the laryngeal mask can effectively establish a safe artificial airway, especially in general anesthesia surgery, and has been widely used in clinical practice. However, traditional laryngeal masks have many disadvantages. First, the single-tube laryngeal mask has no esophageal drainage structure design, and there are risks of gastric flatulence and gastric reflux aspiration during ventilation. Second, this type of laryngeal mask is in the form of an inflatable balloon structure seal, and is designed with a free inflating device, which requires the assistance of a professional assistant for inflation operation, is inconvenient for clinical application, and is not conducive to the rapid establishment of an artificial airway. In addition, for the double-tube laryngeal masks currently on the market, most of them are in the form of inflatable balloon structures, which increase the difficulty and risk of balloon inflation management, cannot accurately judge the balloon inflation volume, and improper operation is likely to cause too high balloon pressure, which is likely to lead to the risk of laryngeal mucosa edema. Summary of the Invention

[0003] Aiming at the problems in the prior art, the purpose of the present invention is to provide an automatic inflation laryngeal mask ventilation device, which is simple, effective, safe and convenient to operate, can effectively reduce injuries and realize the establishment of an artificial airway with a laryngeal mask.

[0004] To achieve the above purpose, the technical solution of the present invention is:

[0005] An automatic inflation laryngeal mask ventilation device, comprising a sealing bladder, a main body tube and a connector, characterized in that the main body tube comprises a mask body, a ventilation tube and a drainage tube, the sealing bladder surrounds the outside of the mask body, the main body tube is formed in accordance with the natural curvature of the oral and pharyngeal airways and is arc-shaped, and has a proximal end for probing into the oral and pharyngeal parts and a distal end located outside the oral cavity, and the main body tube is divided into a juxtaposed ventilation tube and a drainage tube, the mask body is connected to the proximal end of the main body tube, and the mask body has a mask belly forming a concave inner cavity and a mask back on the opposite side, the mask belly is communicated with the ventilation tube, the mask back is attached with a back bladder plate, and a groove is provided on the surface of the back bladder plate in contact with the mask back to cooperate with the mask back to form a sealed cavity, and a ventilation hole communicating with the cavity is provided on the mask belly of the mask body, so as to realize that during the inflation and deflation process of the ventilation tube, gas enters and exits the cavity to drive the change of the cavity volume, and a soft sealing rubber pad is provided on the surface of the mask body in contact with the laryngeal vocal part, so as to realize an adaptive fit with the mucosal tissue around the laryngeal pharyngeal glottis.

[0006] Further, the sealing rubber pad and the back bladder plate are provided as an integral structure.

[0007] Further, the drainage tube is disposed within the ventilation tube, and the sealing bladder is provided with an opening communicating with the drainage tube.

[0008] Further, the drainage tube and the cover body are attached to form a ridge-like structure.

[0009] Further, the ventilation tube and the cover body are arranged to tilt upward.

[0010] Further, the ventilation holes are respectively disposed on both sides of the drainage tube.

[0011] Further, the ventilation tube gradually narrows from the proximal end to the distal end.

[0012] Further, the ventilation opening at the proximal end and the air supply opening at the distal end of the ventilation tube are arranged to be circular, oval, crescent-shaped or dumbbell-shaped.

[0013] Further, a connector is connected to the distal end of the main body tube, and an airway opening and a gastric tube opening communicating with the ventilation tube and the drainage tube respectively are disposed within the connector.

[0014] Further, the sealing gasket is a solid soft gasket, and the material is preferably Shore hardness ≤ 10 degrees.

[0015] Compared with the prior art, an automatic inflation laryngeal mask ventilation device provided by the present invention has a unique structure, is convenient to operate, and has the following beneficial effects:

[0016] 1) The device can quickly, safely and effectively establish an artificial ventilation airway. The ventilation device has small damage and simple operation, and can improve the management level of medical staff for artificial airways;

[0017] 2) The device has an esophageal drainage function. The independent esophageal drainage trachea structure design can prevent aspiration caused by esophageal reflux, and is safer in clinical application;

[0018] 3) The device can have an airway exploration function. The flexible video laryngoscope can pass through the main body tube single-sided ventilation tube through the connector and enter the airway through the glottis to meet the clinical airway exploration and diagnosis and treatment requirements;

[0019] 4) The device has a pre-shaped + self-inflating / exhausting cavity structure design. The new type of laryngeal mask automatically shapes and fits for sealing ventilation according to the characteristics of the oropharyngeal cavity structure. The self-inflating / exhausting cavity structure can automatically adjust the size of the airbag according to the patient's spontaneous breathing rhythm. That is, when the patient is in a positive pressure air supply state, the air pressure in the ventilation pipeline increases, the cavity automatically opens and enters the filling state, and the sealing performance of the cover body is enhanced; when the patient is in a negative pressure exhaust state, the air pressure in the ventilation pipeline decreases, the cavity automatically exhausts and enters the collapsed state, and the pressure of the cover body on the surrounding tissues decreases, reducing continuous compression and the risk of local tissue compression injury. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Attached Figure 1 is a schematic structural diagram of an automatic inflation laryngeal mask ventilation device.

[0022] Attached Figure 2 is attached Figure 1 a full cross-sectional view of an automatic inflation laryngeal mask ventilation device.

[0023] Attached Figure 3 is attached Figure 1 a top view of an automatic inflation laryngeal mask ventilation device.

[0024] In the figure: 1. Sealing balloon, 11. Sealing gasket, 12. Backplate, 2. Main body tube, 21. Mask body, 212. Ventilation hole, 22. Ventilation tube, 23. Drainage tube, 231. Opening, 232. Ridge structure, 3. Connector, 31. Tracheal orifice, 32. Gastric orifice. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Such as Figure 1 、 2As shown in Figure 3, an automatic inflatable laryngeal mask ventilation device as a preferred embodiment of the present invention includes a sealing bag 1, a main body tube 2 and a joint 3, characterized in that the main body tube 2 includes a mask body 21, a ventilation tube 22 and a drainage tube 23, the sealing bag 1 is wrapped around the outside of the mask body 21, the main body tube 2 is formed according to the natural curvature of the oral cavity and pharyngeal airway and is arc-shaped, and has a proximal end for probing into the oral cavity and pharyngeal part and a distal end located outside the oral cavity, and the main body tube 2 is divided into a parallel ventilation tube 22 and a drainage tube 23, the mask body 21 is connected to the proximal end of the main body tube 2, and the mask body 21 has a mask belly forming a concave inner cavity and a mask back on the opposite side, the mask belly is connected to the ventilation tube 22, and the mask back is attached with a backpack Plate 12, a groove is provided on the surface of the backpack plate 12 that fits with the back of the cover to form a sealed cavity with the back of the cover, and a vent 212 is provided on the belly of the cover body 21 that is connected to the cavity, so as to realize that during the inflation and exhaust process of the ventilation tube 22, gas enters and exits the cavity to drive the change of the cavity volume, and a soft sealing rubber pad 11 is provided on the surface of the cover body 21 that contacts the vocal part of the pharynx to achieve adaptive fitting with the peripheral mucosal tissue of the glottis of the laryngopharynx, and the outer edge of the cover body 21 fits with the inner side of the sealing rubber pad 11 of the sealing bag to form a sealing ring / surface of the cover body 21, wherein the sealing rubber pad 11 is a solid soft rubber pad, pre-molded by injection molding, and the material is preferably with a Shore hardness of ≤10 degrees, which is close to the softness of the peripheral mucosal tissue of the glottis. During the anesthesia ventilation process for the patient, oxygen can be used to independently ventilate and exhaust the patient's lungs through the open ventilation tube 22 through the proximal tracheal opening 31 and the glottis; the esophageal drainage tube 23 serves as a special cavity for gastric drainage and anti-aspiration. It can prevent gastric bloating and gastric reflux by inserting a gastric tube, and can clean the gastric contents in real time to reduce the chance of aspiration.

[0027] When the laryngeal mask ventilation device provided by the present invention is used, the device can quickly, safely and effectively establish an artificial airway. The ventilation device has little damage and is simple to operate, which can improve the management level of the artificial airway by medical staff. The device is used to provide respiratory ventilation for patients anesthetized during surgery. The new laryngeal mask ventilation device is inserted into the patient's oral and pharyngeal part. When the device is installed in place in the patient's throat, the proximal end of the sealing bag 1 forms a sealing joint around the esophageal opening. At the same time, the proximal drainage port of the drainage tube 23 inside the mask body 21 is aligned with the esophageal opening, and the ventral edge of the sealing pad 11 is sealed on the peripheral mucosal tissue of the airway glottis. The ventilation tube 22 can directly establish an artificial breathing pathway for ventilating patients anesthetized during surgery, so that the patient can maintain normal breathing, while being isolated from the patient's esophagus to prevent esophageal reflux from entering the airway.

[0028] Secondly, this device has esophageal drainage function and independent esophageal drainage trachea structure design to prevent aspiration caused by esophageal reflux, making clinical application safer.

[0029] Moreover, the device may be equipped with an airway exploration function. The flexible video laryngoscope can pass through the unilateral trachea 22 of the main body tube through the connector 3 and enter the airway through the glottis to meet the requirements of clinical airway exploration and diagnosis and treatment.

[0030] In addition, the device is equipped with a new type of laryngeal mask with a pre-shaped + self-inflating / exhaust cavity 12 structure design. It automatically shapes and fits for sealing ventilation according to the characteristics of the oropharyngeal cavity structure. The self-inflating / exhaust cavity 12 structure can automatically adjust the size of the airbag according to the patient's spontaneous breathing rhythm. That is, when the patient is in the positive pressure ventilation state, the air pressure in the trachea 22 increases, the cavity automatically opens and enters the filling state, and the sealing performance of the mask body 21 is enhanced; when the patient is in the negative pressure exhaust state, the air pressure in the trachea 22 decreases, the cavity automatically exhausts and enters the collapsed state, and the pressure of the mask body 21 on the surrounding tissues decreases, reducing continuous compression and the risk of local tissue compressive injury.

[0031] Preferably, the sealing gasket 11 and the back capsule plate 12 are set as an integrated structure, pre-shaped into a mask-like structure, and the sealing gasket 11 is a solid pre-shaped non-inflatable design with a soft material, which can preferably be made of a plastic with a Shore hardness of less than 10 degrees. It can effectively fit on the mucosal folds around the glottis to form a sealing ring and an isolated ventilation area, providing a high-pressure air flow channel for the airway.

[0032] Specifically, the drainage tube 23 is arranged inside the trachea 22, and the sealing capsule 1 is provided with an opening 231 communicating with the drainage tube 23. The esophageal drainage tube 23 is located inside the tube, extending from the distal end to the proximal end of the tube, respectively forming a proximal esophageal drainage opening and a distal esophageal drainage opening. The proximal part of the esophageal drainage cavity can be embedded in the inner side of the patient's esophageal orifice, and the peripheral material is flexible, which can perform a sealing anastomosis on the patient's esophageal orifice to reduce the risk of aspiration caused by reflux.

[0033] For better technical effects, the drainage tube 23 at the proximal end fits with the mask body 21 to form a ridge structure 232. The tracheal orifice 31 on the ventral side of the mask body 21 is located at the proximal end of the ventilation tube 22, and can preferably be symmetrically distributed left and right; at the same time, to ensure the passing efficiency of the fiberoptic bronchoscope for lung exploration, the tracheal orifice 31 can also be shaped into an asymmetric structure, that is, divided into a ventilation channel and an exploration channel. The inner esophageal drainage tube 23 on the ventral side of the mask body 21 extends towards the ventral side of the mask body 21, thus forming a diffuse ventilation groove; and a ridge structure 232 is formed on the ventral side of the proximal end of the main body tube inside the mask body 21. During the catheterization process, the epiglottis cartilage can slide along the ridge towards the tracheal orifice 31 at the proximal end of the tube, effectively supporting and guiding the sliding of the epiglottis cartilage, reducing epiglottic reflex, avoiding the problem of poor ventilation caused by the blockage of the proximal tracheal orifice 31, improving ventilation safety, expanding the high-pressure oxygen cloud area at the glottis, and enhancing the effect of airway sealing ventilation.

[0034] Specifically, the vent holes 212 are respectively provided on both sides of the drainage tube 23 to ensure the air flow through the cover body 21 and avoid blockage of the epiglottis cartilage.

[0035] Preferably, the ventilation tube 22 and the cover body 21 at the proximal end are configured to be tilted upward, thereby improving the fitting effect of the cover body 21 and the sealing pad 11 with the oral tissue.

[0036] In the above embodiment, the ventilation tube 22 gradually narrows from the proximal end to the distal end. Specifically, the tracheal opening 31 at the proximal end and the air supply port at the distal end of the ventilation tube 22 are set to be circular, elliptical, crescent-shaped or dumbbell-shaped, which can reduce the ventilation resistance. When ventilation is performed, the ventilation cross-sections of the proximal tracheal opening 31 and the distal air supply port are larger, reducing the risk of high-pressure ventilation damaging the patient's lungs.

[0037] The drainage tube 23 is used to insert the gastric tube into the patient's esophagus and into the patient's stomach, thereby discharging the gas or residual gastric juice in the patient's stomach. The proximal drainage port of the drainage tube 23 can be trumpet-shaped or have a fish-mouth-shaped upper and lower concave structure to improve the effect of receiving gastric reflux and facilitate the insertion of the gastric tube.

[0038] In this embodiment, the distal end of the main tube is connected to a connector 3, and a tracheal port 31 and a stomach tube port 32 are provided in the connector 3, which are connected to the ventilation tube 22 and the drainage tube 23 respectively. The ventilator oxygen supply and esophageal drainage functions are realized through the connector 3.

[0039] Finally, it should be noted that, in this article, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements. The embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referenced to each other.

[0040] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be construed in the widest manner consistent with the principles and novel features disclosed herein.

Claims

1. An automatic inflation laryngeal mask ventilation device, comprising a sealing bladder (1), a main body tube (2) and a connector (3), characterized in that, The main body tube (2) includes a cover body (21), a ventilation tube (22) and a drainage tube (23). The sealing bladder (1) surrounds the outside of the cover body (21). The main body tube (2) is formed in accordance with the natural curvature of the oral cavity and the throat airway and is arc-shaped, and has a proximal end for probing into the oral and pharyngeal parts and a distal end located outside the oral cavity. And the main body tube (2) is divided into a juxtaposed ventilation tube (22) and a drainage tube (23). The cover body (21) is connected to the proximal end of the main body tube (2), and the cover body (21) has a cover abdomen forming a concave inner cavity and a cover back on the opposite side. The cover abdomen of the cover body (21) is communicated with the ventilation tube (22). The cover back is attached with a back bladder plate (12). A groove is provided on the surface of the back bladder plate (12) that fits the cover back to cooperate with the cover back to form a sealed cavity. The cover abdomen of the cover body (21) is provided with ventilation holes (212) communicating with the cavity, so as to realize that during the inflation and exhaust processes of the ventilation tube (22), gas enters and exits the cavity to drive the change of the cavity volume. And a soft sealing rubber pad (11) is provided on the surface of the cover body (21) that contacts the throat vocal part to realize an adaptive fit with the peripheral mucosal tissue outside the glottis of the laryngopharynx. The sealing rubber pad (11) and the back bladder plate (12) are set as an integrated structure and pre-shaped into a cover shape.

2. The laryngeal mask airway device according to claim 1, characterized in that, The back bladder plate (12) is a film-like structure with a wall thickness of 0.3 - 2.5 mm.

3. The laryngeal mask airway device according to claim 1, characterized in that, The drainage tube (23) is arranged inside the ventilation tube (22), and the sealing bladder (1) is provided with an opening (231) communicating with the drainage tube (23).

4. The laryngeal mask airway device according to claim 1 or 3, characterized in that, The drainage tube (23) and the cover body (21) are attached to form a ridge structure (232).

5. The laryngeal mask airway device according to claim 1 or 3, characterized in that, The ventilation tube (22) and the cover body (21) are set to tilt upward.

6. The laryngeal mask airway device according to claim 1, wherein The ventilation holes (212) are respectively arranged on both sides of the drainage tube (23).

7. The laryngeal mask airway device according to claim 1, characterized in that The ventilation tube (22) gradually narrows from the proximal end to the distal end.

8. The laryngeal mask airway device according to claim 1, wherein, The ventilation port at the proximal end and the air supply port at the distal end of the ventilation tube (22) are set to be circular, oval, crescent or dumbbell-shaped.

9. The laryngeal mask airway device according to claim 1, wherein A connector (3) is connected to the distal end of the main body tube (2). Inside the connector (3), there are tracheal ports (31) and gastric tube ports (32) respectively communicating with the ventilation tube (22) and the drainage tube (23).

10. The laryngeal mask airway device according to claim 1, wherein, The sealing rubber pad (11) is a solid soft rubber pad, and the material has a Shore hardness ≤ 10 degrees.

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