Novel multifunctional laryngeal mask

Abstract

The invention belongs to the technical field of medical instruments. The invention discloses a novel multifunctional laryngeal mask which comprises a breather pipe, one end of the breather pipe is connected with an external ventilation loop through a connector, and the other end of the breather pipe is provided with a mask body used for ventilation, exhaust and secretion suction. The mask body is provided with a mask bag structure which is matched with the mask body so as to accord with the throat and spine characteristics of a patient, so that the stable limitation on the mask body is met, and safe sealed ventilation is realized. The device has the advantages that the device can accord with throat and spine characteristics of a patient to realize safe sealed ventilation, and the risk of regurgitation and aspiration due to the fact that gas enters the stomach of the patient is not easily caused.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more particularly to a novel multifunctional laryngeal mask. Background Art

[0002] As an important respiratory management medical device, the laryngeal mask is suitable for patients who require emergency artificial ventilation to maintain upper airway patency. Currently, the laryngeal mask on the market mainly consists of a connector, a ventilation tube, and a mask bag. The laryngeal mask can be divided into two categories based on the form of the mask bag: inflatable laryngeal mask and non-inflatable laryngeal mask. However, both types of laryngeal mask have the following shortcomings during use:

[0003] 1) The airbag of an inflatable laryngeal mask is usually made of inflatable material. When the laryngeal mask is correctly placed in the patient's laryngopharynx, an appropriate amount of gas is added to the airbag to expand and fit tightly against the inner wall of the patient's laryngopharynx, forming a relatively closed channel so that gas can smoothly enter the airway during ventilation, achieving end-to-end ventilation. Although this inflatable laryngeal mask can meet certain usage requirements, due to structural defects, its tip can easily mistakenly enter the piriform sinus on one side, causing laryngeal squaming. As a result, its sealing pressure is not high, resulting in a sealing pressure that cannot meet clinical needs. Moreover, when a large amount of gas is added to the airbag, the airbag easily exerts high pressure on the patient's laryngopharynx, which is very likely to cause tissue damage to the patient, especially during long operations.

[0004] 2) Inflation-free laryngeal mask, which is generally made of medical-grade thermoplastic material. When it enters the human body, the material will soften accordingly, and can better fit the patient's laryngopharynx to form a seal. It is suitable for emergency situations or scenarios that require high operating speed. During the placement process, the mask bag can naturally embed into the gap of the patient's laryngopharynx tissue, using the body's own structure to achieve sealing. Because it is embedded with the surrounding tissue of the patient's laryngopharynx to achieve sealing, it does not have an adjustment function for patients with particularly narrow or loose throat cavities, and there may be problems such as difficulty in placement or too low sealing pressure, resulting in inability to achieve ventilation.

[0005] In addition, whether it is an inflatable laryngeal mask or an airless laryngeal mask, the back (mask back) is designed to be slightly convex in the middle, which is not completely consistent with the characteristics of the protrusion of the spine on the posterior wall of the throat. It is easy for the mask bag to squeeze the cricoid cartilage plate, resulting in a decrease in sealing, thereby failing to achieve the predetermined sealing effect; in addition, it is easy for gas to enter the patient's stomach due to poor sealing effect, causing the risk of reflux and aspiration.

[0006] How to solve the above problems has become a technical problem that needs to be solved urgently. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a new multifunctional laryngeal mask that can fit the patient's throat and spine characteristics to achieve safe and sealed ventilation and is not likely to cause gas to enter the patient's stomach and cause reflux and aspiration risks.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0009] A new multifunctional laryngeal mask comprises a ventilation tube, one end of which is connected to an external ventilation circuit via a joint, and a mask body for ventilating air and attracting secretions is provided at the other end of the ventilation tube; a mask bag structure is provided on the mask body to cooperate with the mask body to fit the patient's throat and spine characteristics, thereby meeting the requirements for the stability of the mask body and realizing safe and sealed ventilation.

[0010] Preferably, the mask structure includes air bags arranged on both sides of the back of the mask body, and the upper ends of the two air bags are connected to facilitate inflation to form a concave structure that fits the oval and slightly forward-protruding cervical cone of the human body. The middle part of the tip of the mask body is thinly designed to fit the ridge-shaped posterior protrusion feature in the middle of the back of the human cricoid cartilage plate. The air bags and the mask body cooperate to form a laryngeal mask sealing structure that fits the patient's throat and spinal characteristics to cover the patient's throat opening to achieve safe sealed ventilation.

[0011] Preferably, the bag structure also includes a tube groove opened on the outer wall of one side of the airbag where the ventilation tube is located, an inflation tube is embedded in the tube groove and one end of the inflation tube is connected to the airbag, and the other end of the inflation tube is connected to an external inflation device via a one-way valve for one-way flow to the airbag.

[0012] Preferably, an indicator airbag for indicating the filling status of the airbag is further provided on one end of the inflation tube near the one-way valve.

[0013] Preferably, a liquid storage tank is provided on the mask body and between the two air bags to divert the patient's gastroesophageal reflux to relieve the gastroesophageal drainage pressure and prevent the gastric objects from breaking through the corresponding sealing area and entering the airway to cause the risk of reflux aspiration.

[0014] Preferably, the mask body includes a mask body with a thin design in the middle of the tip for fitting the ridge-shaped posterior protrusion feature in the middle of the back side of the human cricoid cartilage plate, the mask body is connected to the ventilation tube and the mask body is pre-equipped with a gastroesophageal drainage groove, and airbag grooves are provided on both sides of the back side of the mask body, wherein the corresponding airbags are provided on the corresponding airbag grooves and cooperate with the mask body to form a laryngeal mask sealing structure to fit the patient's throat and spinal characteristics, a camera structure and a flushing structure for flushing the camera structure are provided on the mask body, and a drainage and suction structure for implementing gastroesophageal drainage and gastric exhaust and secretion suction for the patient is also provided on the mask body.

[0015] Preferably, the camera structure includes a camera arranged on one side wall of the cavity of the cover body, and also includes a power cord embedded in the inner wall of the corresponding side of the ventilation pipe, wherein one end of the power cord extends into the cover body and is electrically connected to the camera, and the other end of the power cord passes through the top of the ventilation pipe and extends to the outside to be electrically connected to the external camera system.

[0016] Preferably, the flushing structure includes a flushing port opened in the cavity of the cover body near one end of the camera, and also includes a flushing pipe embedded in the inner wall of the corresponding side of the ventilation pipe, and one end of the flushing pipe extends into the cover body and is connected to the flushing port, and the other end of the flushing pipe passes through the top of the ventilation pipe and extends to the outside and is connected to the external flushing equipment through a flushing joint.

[0017] Preferably, the drainage and suction structure includes a suction hole provided on the liquid storage tank and the suction hole is connected to the gastroesophageal drainage groove of the cover body, and a drainage hole connected to the gastroesophageal drainage groove is provided on the cover body away from one end of the ventilation tube, and also includes a drainage cavity embedded in the inner wall of the corresponding side of the ventilation tube, and one end of the drainage cavity is connected to the gastroesophageal drainage groove, and the other end of the drainage cavity passes through the top of the ventilation tube for an external gastric tube to be inserted to implement gastroesophageal and reflux drainage and gastric exhaust, a suction cavity is embedded on the inner wall of the corresponding side of the ventilation tube, and one end of the suction cavity is connected to the cavity of the cover body, and the other end of the suction cavity passes through the top of the ventilation tube for an external sputum suction tube to be inserted to implement pharyngeal secretion suction.

[0018] Preferably, the ventilation tube is made of any one of silicone, PVC or TPE materials.

[0019] Preferably, the cover body is made of either silicone or TPE material.

[0020] Preferably, the joint is made of any one of PC, PP or PSF materials.

[0021] Preferably, the airbag is made of any one of silicone or TPU materials.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In the present invention, the mask body, together with the ventilation tube and the connector, is inserted into the patient's throat, and the connector is then connected to an external ventilation circuit to achieve ventilation of the patient. In the process of inserting the laryngeal mask sealing structure formed by the mask body and the mask bag structure into the patient's throat, when the mask bag structure is not inflated, the mask body occupies a small space and can be quickly inserted into the throat through the patient's mouth. In addition, the preset contour of the mask body can be embedded with the patient's pharyngeal tissue to make the mask body fit better in the throat. When the mask bag structure is inflated, the bag body of the mask bag structure can be tightly attached to the patient's posterior pharyngeal wall to form an upward, downward, left and right force on the mask body. By applying a predetermined force to the mask body, it is firmly confined to the patient's throat to prevent it from displacement. Thus, the bag body of the mask bag structure and the mask body cooperate to fit the patient's throat and spine characteristics to achieve firm confinement of the mask body, which can achieve safe sealed ventilation to avoid the risk of reflux and aspiration caused by gas entering the patient's stomach, and can also avoid tissue damage caused by excessive pressure. In addition, except for the bag body of the mask structure contacting the patient's posterior pharyngeal wall, the mask body does not contact the patient's posterior pharyngeal wall and is a suspended space. By extending the corresponding external pipe from the corresponding cavity provided on the inner wall of the ventilation tube into the mask body, gastroesophageal and reflux drainage as well as gastric exhaust and secretion suction can be implemented. In addition, in the present invention, the external gastric tube can be connected from the connector and inserted into the mask body through the ventilation tube and the predetermined opening on the top of the mask body in turn as needed, thereby realizing the insertion of the gastric tube to implement gastroesophageal drainage and gastric exhaust, which effectively improves the convenience of use. Therefore, the present invention has the advantages of being able to fit the patient's throat and spine characteristics to achieve safe and sealed ventilation, and is not prone to causing the risk of gas entering the patient's stomach and causing reflux and aspiration. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and examples.

[0025] Figure 1 This is a schematic structural diagram of a novel multifunctional laryngeal mask according to the present invention;

[0026] Figure 2 This is a schematic diagram of the bag structure of a new multifunctional laryngeal mask according to the present invention. Figure 1 ;

[0027] Figure 3 This is a schematic diagram of the bag structure of a new multifunctional laryngeal mask according to the present invention. Figure 2 ;

[0028] Figure 4 Schematic diagram of a mask body of a novel multifunctional laryngeal mask according to the present invention;

[0029] Figure 5 It is a schematic diagram of a connector of a novel multifunctional laryngeal mask according to the present invention.

[0030] Explanation of the accompanying drawings: 1. Ventilation tube, 2. Connector, 3. Cover body, 31. Cover body, 32. Camera structure, 321. Camera, 322. Power cord, 33. Flushing structure, 331. Flushing port, 332. Flushing tube, 333. Flushing connector, 34. Drainage and suction structure, 341. Liquid storage tank, 342. Suction hole, 343. Drainage hole, 344. Drainage cavity, 345. Suction cavity, 35. Airbag groove, 4. Cover bag structure, 41. Airbag, 42. Tube groove, 43. Inflation tube, 44. One-way valve, 45. Indicator airbag. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] See Figures 1 to 5As shown, a new multifunctional laryngeal mask comprises a ventilation tube 1, one end of which is connected to an external ventilation circuit via a connector 2, and the other end of the ventilation tube 1 is provided with a mask body 3 for ventilating air and attracting secretions; the mask body 3 is provided with a mask bag structure 4 which cooperates with the mask body 3 to fit the patient's throat and spine characteristics so as to meet the requirements of the stable limitation of the mask body 3 to achieve safe and sealed ventilation. The mask body 3 includes a mask body 31 with a thin middle portion at the tip designed to fit the ridge-shaped posterior protrusion feature in the middle of the back side of the human anicoid cartilage plate. The end of the mask body 31 away from the ventilation tube 1 is a tip, and the thin middle portion of the tip means that the middle portion of the tip of the mask body 31 is thinner than the two sides; the mask body 31 is connected to the ventilation tube 1 and the mask body 31 is pre-equipped with a gastroesophageal drainage groove, and airbag grooves 35 are provided on both sides of the back side of the mask body 31, wherein the corresponding airbags 41 are provided on the corresponding airbag grooves 35 and cooperate with the mask body 3 to form a laryngeal mask sealing structure to fit the patient's throat and spinal characteristics, a camera structure 32 and a flushing structure 33 for flushing the camera structure 32 are provided on the mask body 31, and a drainage and suction structure 34 for performing gastroesophageal drainage and gastric exhaust and secretion suction on the patient is also provided on the mask body 31.During use, the mask body 3 together with the mask bag structure 4, the ventilation tube 1 and the connector 2 are extended into the designated position of the patient's throat, and then the connector 2 is connected to the external ventilation circuit to realize the ventilation operation of the patient; in the process of inserting the laryngeal mask sealing structure formed by the mask body 3 and the mask bag structure 4 into the patient's throat, when the mask bag structure 4 is not inflated, the mask body 31 of the mask body 3 occupies a small space and can be quickly inserted into the throat through the patient's mouth, and the preset contour of the front of the mask body 31 and the thin design of the middle part of the tip of the mask body 31 make it more consistent with the feature of the ridge-shaped posterior protrusion in the middle of the back of the patient's cricoid cartilage plate, thereby being able to be embedded with the patient's pharyngeal cavity tissue to make the mask body The mask body 31 is preferably fitted to the patient's throat. When the mask bag structure 4 is inflated, the bag body of the mask bag structure 4 located on the bag groove 35 can be in close contact with the patient's pharyngeal posterior wall to form an upward, downward, leftward and rightward force on the mask body 31. By applying a predetermined force to the mask body 31, it is firmly confined to the patient's throat to prevent it from being displaced. Thus, the mask body 31 can be made to fit the patient's throat and spine features by utilizing the cooperation of the bag body of the mask bag structure 4 and the mask body 31 to achieve a firm confinement of the mask body 31, and can achieve safe and sealed ventilation to avoid the risk of reflux and aspiration caused by gas entering the patient's stomach, and can also avoid tissue damage caused by excessive pressure. In addition, at this time, in addition to the mask The sac structure 4 is in contact with the posterior pharyngeal wall of the patient, while the mask body 31 is not in contact with the posterior pharyngeal wall of the patient and is a suspended space. By extending the corresponding external pipeline from the cavity of the drainage and suction structure 34 located at the predetermined position of the ventilation tube into the mask body 31, the patient can be subjected to gastroesophageal drainage and gastric exhaust and secretion suction operations. In addition, in this embodiment, the external gastric tube can also be inserted from the joint 2 and sequentially through the ventilation tube 1 and the predetermined opening on the top of the mask body 31 into the mask body 31 as needed, thereby realizing the insertion of the gastric tube to implement gastroesophageal drainage and gastric exhaust, which effectively improves the convenience of use. At the same time, the corresponding components of the drainage and suction structure 34 are used as gastric contents. The buffer zone of gastric contents when objects reflux to the esophageal opening can effectively relieve the drainage pressure of the gastroesophageal tract to avoid the risk of reflux and aspiration caused by objects in the stomach breaking through the corresponding sealing area and entering the airway; and, by connecting the imaging structure 32 to an external imaging system, the imaging structure 32 can obtain the glottis field of view information of the patient's throat in real time to facilitate safe ventilation. When the imaging component of the imaging structure 32 is blurred by objects in the patient's body, the flushing structure 33 is connected to the external flushing equipment, and the external flushing equipment is started to transport the flushing liquid from the flushing structure 33 to the imaging component of the imaging structure 32 to perform a flushing operation to ensure that a better glottis field of view can be obtained.

[0033] In this embodiment, the camera structure 32 includes a camera 321 provided on one side wall of the cavity of the cover body 31, and also includes a power cord 322 embedded in the inner wall of the corresponding side of the ventilation pipe 1, wherein one end of the power cord 322 extends into the cover body 31 and is electrically connected to the camera 321, and the other end of the power cord 322 passes through the top of the ventilation pipe 1 and extends to the outside to be electrically connected to the external camera system. The flushing structure 33 includes a flushing port 331 opened in the cavity of the cover body 31 near one end of the camera 321, and also includes a flushing pipe 332 embedded in the inner wall of the corresponding side of the ventilation pipe 1, and one end of the flushing pipe 332 extends into the cover body 31 and is connected to the flushing port 331, and the other end of the flushing pipe 332 passes through the top of the ventilation pipe 1 and extends to the outside to be connected to the external flushing equipment through a flushing connector 333. During use, when performing ventilation operations on the patient, the power cord 322 of the camera structure 32 is connected to the external camera system, and the camera 321 with a certain tilt angle is started to obtain the glottal field of view information of the patient's throat in real time and display it in the external camera system to facilitate safe ventilation. When the camera 321 is blurred by objects in the patient's body, the flushing connector 333 of the flushing structure 33 is connected to the external flushing equipment, and the external flushing equipment is started to transport the flushing liquid to the camera 321 through the flushing connector 333, the flushing tube 332, and the flushing port 331 in sequence to realize the flushing operation of the camera 321, thereby ensuring that a better glottal field of view can be obtained to safely implement the ventilation operation.

[0034] In this embodiment, a liquid storage tank 341 is provided on the mask body 3 and between the two air bags 41 for diverting the patient's gastroesophageal reflux to relieve the gastroesophageal drainage pressure and prevent the objects in the stomach from breaking through the corresponding sealing area and entering the airway to cause the risk of reflux and aspiration. The drainage and suction structure 34 includes a suction hole 342 opened on the liquid storage tank 341, and the suction hole 342 is connected to the gastroesophageal drainage groove of the cover body 31. A drainage hole 343 connected to the gastroesophageal drainage groove is also opened on the cover body 31 away from the end of the ventilation tube 1. It also includes a drainage cavity 344 embedded in the inner wall of the corresponding side of the ventilation tube 1, and one end of the drainage cavity 344 is connected to the gastroesophageal drainage groove. The other end of the drainage cavity 344 passes through the top of the ventilation tube 1 for an external gastric tube to be inserted to implement gastroesophageal and reflux drainage and gastric exhaust. A suction cavity 345 is embedded on the inner wall of the corresponding side of the ventilation tube 1, and one end of the suction cavity 345 is connected to the cavity of the cover body 31. The other end of the suction cavity 345 passes through the top of the ventilation tube 1 for an external sputum suction tube to be inserted to implement pharyngeal secretion suction. During use, when performing ventilation operations on the patient, except for the air bag 41 of the mask structure 4 contacting the patient's posterior pharyngeal wall, the mask body 31 does not contact the patient's posterior pharyngeal wall and is a suspended space. At this time, the liquid reservoir 341 is used as a buffer zone for the gastric contents when the gastric contents reflux to the esophageal opening, wherein the liquid reservoir 341 is a groove recessed in the back of the mask body 31. The liquid reservoir 341 can effectively relieve the gastroesophageal drainage pressure to avoid the risk of reflux and aspiration caused by the objects in the stomach breaking through the corresponding sealing area and entering the airway; when it is necessary to perform gastroesophageal drainage and gastric exhaust operations on the patient, the external gastric tube is inserted into the drainage cavity 344 from the top end of the ventilation tube 1, so that the external gastric tube, the drainage cavity 344, the gastroesophageal drainage groove of the mask body 31, the suction hole 342, and the drainage hole 343 are mutually connected. The drainage cavity 343 is connected, thereby utilizing the external gastric tube, the drainage cavity 344, the gastroesophageal drainage groove of the mask body 31, and the drainage hole 343 to form the drainage cavity 344, the external gastric tube, the drainage cavity 344, the gastroesophageal drainage groove of the mask body 31, and the suction hole 342 to form the drainage cavity 342 to drain the gastroesophageal reflux diverted to the liquid storage tank 341, which can ensure the connection between the patient's stomach and the outside world, further dredge the stomach gas, and reduce the risk of reflux; when it is necessary to perform secretion suction operation on the patient, the external sputum suction tube is inserted into the interior from the suction cavity 345 near the top end of the ventilation tube 1, so that the external gastric tube, the suction cavity 345, and the cavity of the mask body 31 are connected to each other to perform suction operation on the patient's pharyngeal secretions, which effectively improves the convenience and safety of use.

[0035] In this embodiment, the mask structure 4 includes airbags 41 provided on both sides of the back of the mask body 3, and the upper ends of the two airbags 41 are connected to facilitate inflation to form an inwardly concave structure that fits the oval and slightly forward protruding cervical cone of the human body. The middle part of the tip of the mask body 3 is thin, specifically, the middle part of the tip of the mask body 31 of the mask body 3 is thin, so as to better fit the ridge-shaped posterior protrusion feature of the back of the human cricoid cartilage plate. The airbags 41 cooperate with the mask body 3 to form a laryngeal mask sealing structure that fits the patient's throat and spine features to cover the patient's throat opening to achieve safe and sealed ventilation. The mask structure 4 also includes a tube groove 42 opened on the outer wall of the ventilation tube 1 on one side of the airbag 41, an inflation tube 43 is embedded in the tube groove 42, and one end of the inflation tube 43 is connected to the airbag 41, and the other end of the inflation tube 43 is connected to the external inflation device through a one-way valve 44 that allows one-way flow to the airbag 41. An indicating airbag 45 for indicating the filling status of the airbag 41 is also provided on the inflation tube 43 near one end of the one-way valve 44 .During use, the mask body 3 together with the mask bag structure 4, the ventilation tube 1 and the connector 2 are extended into the designated position of the patient's throat, and then the connector 2 is connected to the external ventilation circuit to realize the ventilation operation of the patient; in the process of inserting the laryngeal mask sealing structure formed by the mask body 3 and the mask bag structure 4 into the patient's throat, the inflation tube 43 is embedded in the tube groove 42 located on the back of the ventilation tube 1, which can avoid the chaotic placement of the inflation tube 43 during clinical use, and prevent the inflation tube 43 from protruding and injuring the back wall of the patient's oral cavity when it is inserted into the patient's body. When the air bag 41 of the mask bag structure 4 is not inflated, the mask body 31 of the mask body 3 It occupies a small space and can be quickly placed in the throat through the patient's mouth, and the preset contour on the front of the mask body 31 can be embedded with the patient's pharyngeal tissue to make the mask body 31 fit better in the patient's throat. When the one-way valve 44 is connected to the external inflation device and the inflation device is started, the inflation device is used to inflate the airbag 41 through the one-way valve 44, the indicator airbag 45, and the inflation tube 43 in sequence. At this time, the airbag 41 on the back of the mask body 31 is a thin airbag structure, which is mainly distributed on both sides of the back of the mask body 31, similar to a wide foot. There is no airbag in the middle area of ​​the back of the mask body 31, thereby forming a mask body. The back of the mask 31 is high on both sides and low in the middle. That is, after the airbag 41 is inflated, the airbag 41 can form an inverted U-shaped structure, so it can perfectly fit the protruding structural characteristics of the spine, avoiding the problem of insufficient sealing caused by this. Under the action of the indication of the airbag 45 to adjust the amount of inflation, the airbag 41 is adjusted to a predetermined thickness in time according to the size of the patient's throat cavity and is tightly attached to the patient's pharyngeal wall to form an upward, downward, left and right force on the mask body 31, and combined with the preset contour of the front of the mask body 31 and the thin design of the middle part of the tip of the mask body 31 to fit the ridge shape in the middle of the back of the patient's cricoid cartilage plate. The posterior protrusion feature can increase the fit and fixation of the mask body 31 to the tissue structure, avoid insufficient sealing and displacement, and thus can fit patients with different throat space sizes to increase the sealing pressure. By applying a predetermined force to the mask body 31, it is firmly confined to the patient's throat to prevent it from being displaced. The cooperation between the air bag 41 of the mask bag structure 4 and the mask body 31 can make the mask body 31 fit the patient's throat and spinal features to achieve a firm limitation of the mask body 31, and can achieve safe sealed ventilation to avoid the risk of reflux and aspiration caused by gas entering the patient's stomach, while also avoiding tissue damage caused by excessive pressure.

[0036] In this embodiment, the vent tube 1 is made of silicone, PVC, or TPE using a vulcanization or injection molding process. The cover body 31 is made of silicone or TPE using a vulcanization or injection molding process. The connector 2 is made of PC, PP, or PSF using an injection molding process. For example, the size of the connector 2 is a standard 15mm connector. The airbag 41 is made of silicone or TPU using a blow molding process. It is mainly distributed on both sides of the back of the cover body 31 and has an inverted U-shape.

[0037] In this embodiment, the shape of the mask body 31 is adapted to fit the shape of human laryngeal tissue. The front end of the mask body 31 close to the patient adopts a preset contour design, and the middle part of the tip of the mask body 31 adopts a thin design, which can fit the ridge-shaped posterior protrusion in the middle of the back of the human cricoid cartilage plate, and can achieve fit with the human laryngeal tissue during clinical use, thereby enhancing sealing and stability.

[0038] In this embodiment, except for the ventilation tube 1, the mask body 31, and the connector 2, other components, such as the inflation tube 43, the indicator airbag 45, the one-way valve 44, the flushing tube 332, the flushing connector 333, etc., are all made of commonly used materials of existing laryngeal masks, and their connection methods and clinical functions are also the same.

[0039] When this embodiment is used, first, the mask body 3 together with the mask bag structure 4, the ventilation tube 1 and the connector 2 are extended into the designated position of the patient's throat, and then the connector 2 is connected to the external ventilation circuit to realize the ventilation operation of the patient; secondly, in the process of inserting the laryngeal mask sealing structure formed by the mask body 3 and the mask bag structure 4 into the patient's throat, the inflation tube 43 is embedded in the tube groove 42 located on the back of the ventilation tube 1, which can avoid the chaotic placement of the inflation tube 43 during clinical use, and prevent the inflation tube 43 from protruding and injuring the back wall of the patient's oral cavity when it is inserted into the patient's body. When the air bag 41 of the mask bag structure 4 is not inflated, the mask body 3 The mask body 31 occupies a small space and can be quickly placed in the throat through the patient's mouth, and the preset contour on the front of the mask body 31 and the thin design of the tip in the middle can fit the ridge-shaped posterior protrusion in the middle of the back of the patient's cricoid cartilage plate, thereby being able to be embedded with the patient's pharyngeal cavity tissue to make the mask body 31 fit better in the patient's throat. When the one-way valve 44 is connected to the external inflation device and the inflation device is started, the inflation device is used to inflate the airbag 41 through the one-way valve 44, the indicator airbag 45, and the inflation tube 43 in sequence. At this time, under the guidance of the indicator airbag 45, the airbag 41 is adjusted according to the size of the patient's throat cavity. The mask body 31 is adapted to fit the oval and slightly forward-protruding cervical cone of the human body, so that it can be closely attached to the posterior wall of the patient's pharynx to form an up, down, left, and right force on the mask body 31, and can cover the patient's throat opening in accordance with the patient's throat and spine characteristics to enhance the sealing pressure, that is, it is adapted to patients with different throat space sizes. By applying a predetermined force to the mask body 31, it is firmly confined to the patient's throat to prevent it from being displaced. Thus, the cooperation between the airbag 41 of the mask bag structure 4 and the mask body 31 can make the mask body 31 fit the patient's throat and spine characteristics to achieve a firm limitation on the mask body 31, which can While achieving safe sealed ventilation to prevent gas from entering the patient's stomach and causing the risk of reflux and aspiration, it can also prevent tissue damage caused by excessive pressure. Then, at this time, except for the air bag 41 of the mask structure 4 contacting the patient's posterior pharyngeal wall, the mask body 31 does not contact the patient's posterior pharyngeal wall and is a suspended space. At this time, the liquid reservoir 341 is used as a buffer zone for gastric contents when they reflux to the esophageal opening. The liquid reservoir 341 is a groove recessed in the back of the mask body 31. The liquid reservoir 341 can effectively relieve the gastroesophageal drainage pressure to prevent gastric objects from breaking through the corresponding sealing area and entering the airway, causing the risk of reflux and aspiration.When it is necessary to perform gastroesophageal drainage and gastric exhaust on the patient, the external gastric tube is inserted into the interior from the drainage cavity 344 near the top end of the ventilation tube 1, so that the external gastric tube, the drainage cavity 344, the gastroesophageal drainage groove of the mask body 31, the suction hole 342, and the drainage hole 343 are connected to each other. The drainage cavity composed of the external gastric tube, the drainage cavity 344, the gastroesophageal drainage groove of the mask body 31, and the drainage hole 343 can be used to perform gastroesophageal drainage and gastric exhaust on the patient, and the drainage cavity composed of the external gastric tube, the drainage cavity 344, the gastroesophageal drainage groove of the mask body 31, and the suction hole 342 can be used to drain the gastroesophageal reflux diverted to the liquid storage tank 341, which can ensure the connection between the patient's stomach and the outside world, further dredge the stomach gas, and reduce the risk of reflux; when it is necessary to perform secretion suction on the patient, the external sputum suction tube is inserted from the suction cavity 345 near the ventilation tube 1 is inserted into the interior, thereby interconnecting the external gastric tube, the suction cavity 345, and the cavity of the mask body 31 to perform suction operations on the patient's pharyngeal secretions, effectively improving the convenience and safety of use. Finally, the power cord 322 of the camera structure 32 is connected to the external camera system, and the camera 321 with a certain tilt angle is activated to obtain real-time glottic field information of the patient's throat and display it on the external camera system to facilitate safe ventilation. When the camera 321 is blurred by objects in the patient's body, the flushing connector 333 of the flushing structure 33 is connected to the external flushing device, and the external flushing device is activated to sequentially deliver flushing fluid through the flushing connector 333, the flushing tube 332, and the flushing port 331 to the camera 321 to perform the flushing operation on the camera 321, thereby ensuring that a good glottic field of view can be obtained for safe ventilation.

[0040] In summary, the present invention adopts the above-mentioned structure, which has the advantages of being able to fit the patient's throat and spine characteristics to achieve safe and sealed ventilation, and is less likely to cause gas to enter the patient's stomach and cause the risk of reflux and aspiration.

[0041] Those skilled in the art can make various other corresponding changes and deformations based on the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the claims of the present invention.

Claims

1. A novel multifunctional laryngeal mask comprises a ventilation tube (1), one end of which is connected to an external ventilation circuit via a connector (2), and a mask body (3) for ventilating air and attracting secretions is provided at the other end of the ventilation tube (1); the characteristics are: The mask body (3) is provided with a mask bag structure (4) which cooperates with the mask body (3) to fit the patient's throat and spine characteristics, thereby satisfying the stable limitation of the mask body (3) to achieve safe sealed ventilation.

2. The novel multifunctional laryngeal mask according to claim 1, characterized in that: The mask structure (4) includes air bags (41) arranged on both sides of the back of the mask body (3), and the upper ends of the two air bags (41) are connected to facilitate inflation to form an inner concave structure that fits the oval and slightly forward-protruding cervical cone of the human body. The middle part of the tip of the mask body is thin and designed to fit the ridge-shaped posterior protrusion feature of the middle of the back of the human cricoid cartilage plate. The air bags (41) cooperate with the mask body (3) to form a laryngeal mask sealing structure that fits the patient's throat and spine characteristics to cover the patient's throat opening to achieve safe sealed ventilation.

3. The novel multifunctional laryngeal mask according to claim 2, characterized in that: The sac structure (4) further comprises a tube groove (42) provided on the outer wall of the ventilation tube (1) on one side of the airbag (41); an inflation tube (43) is embedded in the tube groove (42); one end of the inflation tube (43) is connected to the airbag (41); the other end of the inflation tube (43) is connected to an external inflation device via a one-way valve (44) for one-way flow to the airbag (41).

4. The novel multifunctional laryngeal mask according to claim 3, characterized in that: An indicating air bag (45) for indicating the filling state of the air bag (41) is also provided on one end of the inflation tube (43) close to the one-way valve (44).

5. The novel multifunctional laryngeal mask according to any one of claims 2 to 4, characterized in that: A liquid storage tank (341) is provided on the cover body (3) and between the two air bags (41) for diverting gastroesophageal reflux of the patient to relieve gastroesophageal drainage pressure and prevent stomach objects from breaking through the corresponding sealing area and entering the airway to cause reflux aspiration risk.

6. The novel multifunctional laryngeal mask according to claim 5, characterized in that: The mask body (3) includes a mask body (31) with a thin design at the middle of the tip for fitting the ridge-shaped posterior protrusion feature in the middle of the back of the human anicoid cartilage plate. The mask body (31) is connected to the ventilation tube (1) and the mask body (31) is pre-equipped with a gastroesophageal drainage groove. Air bag grooves (35) are provided on both sides of the back of the mask body (31), wherein the corresponding air bags (41) are provided on the corresponding air bag grooves (35) and cooperate with the mask body (3) to form a laryngeal mask sealing structure to fit the patient's throat and spine features. A camera structure (32) and a flushing structure (33) for flushing the camera structure (32) are provided on the mask body (31). A drainage and suction structure (34) for performing gastroesophageal drainage and gastric exhaust and secretion suction on the patient is also provided on the mask body (31).

7. The novel multifunctional laryngeal mask according to claim 6, characterized in that: The camera structure (32) includes a camera (321) provided on one side wall of the cavity of the cover body (31), and also includes a power cord (322) embedded in the inner wall of the corresponding side of the ventilation pipe (1), wherein one end of the power cord (322) extends into the cover body (31) and is electrically connected to the camera (321), and the other end of the power cord (322) passes through the top of the ventilation pipe (1) and extends outside to be electrically connected to an external camera system.

8. The novel multifunctional laryngeal mask according to claim 7, characterized in that: The flushing structure (33) includes a flushing port (331) provided in the cavity of the cover body (31) near one end of the camera (321), and also includes a flushing pipe (332) embedded in the inner wall of the corresponding side of the ventilation pipe (1), and one end of the flushing pipe (332) extends into the cover body (31) and is connected to the flushing port (331), and the other end of the flushing pipe (332) passes through the top of the ventilation pipe (1) and extends to the outside to be connected to an external flushing device through a flushing joint (333).

9. The novel multifunctional laryngeal mask according to claim 8, characterized in that: The drainage and suction structure (34) includes a suction hole (342) provided on the liquid storage tank (341), and the suction hole (342) is connected to the gastroesophageal drainage groove of the cover body (31), and a drainage hole (343) is provided on the cover body (31) at one end away from the ventilation tube (1) and connected to the gastroesophageal drainage groove, and also includes a drainage cavity (344) embedded in the inner wall of the corresponding side of the ventilation tube (1), and one end of the drainage cavity (344) is connected to the gastroesophageal drainage groove. The other end of the drainage cavity (344) passes through the top of the ventilation tube (1) for inserting an external stomach tube to implement gastroesophageal and reflux drainage and gastric exhaust. A suction cavity (345) is embedded on the inner wall of the corresponding side of the ventilation tube (1), and one end of the suction cavity (345) is connected to the cavity of the mask body (31). The other end of the suction cavity (345) passes through the top of the ventilation tube (1) for inserting an external sputum suction tube to implement pharyngeal secretion suction.

10. The novel multifunctional laryngeal mask according to claim 9, characterized in that: The vent tube (1) is made of any one of silica gel, PVC or TPE materials; the cover body (31) is made of any one of silica gel or TPE materials; the joint (2) is made of any one of PC, PP or PSF materials; and the air bag (41) is made of any one of silica gel or TPU materials.

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