CN211798095U - Automatic inflation laryngeal mask ventilation device - Google Patents

Abstract

The utility model belongs to the technical field of medical equipment, in particular to an automatic inflation laryngeal mask airway device, which comprises a sealing bag, a main body tube and a joint, the main body tube comprises a cover body, a vent pipe and a drainage tube, the sealing bag is wrapped on the outer side of the cover body, the main body tube is formed according to the natural radian of the oral cavity and the throat airway, the main body tube is divided into a ventilation tube and a drainage tube which are arranged in parallel, the cover body is connected with the near end of the main body tube, and the cover body is provided with a cover abdomen forming a concave inner cavity and a cover back at the opposite side, the cover abdomen is communicated with the vent pipe, the back of the cover is attached with a back bag plate, the surface of the back bag plate, which is attached to the back of the cover, is provided with a groove to realize the matching with the back of the cover to form a sealed cavity, the belly of the cover body is provided with a vent hole communicated with the cavity, and the surface of the cover body contacting with the throat and the glottis is provided with a sealing rubber pad. The utility model is simple in operation effectively, safe convenient, can effectively reduce the damage and realize the establishment of the artifical air flue of laryngeal mask.

Description

An automatic inflatable laryngeal mask ventilation device

technical field

The utility model relates to the technical field of medical equipment, in particular to an automatic inflatable laryngeal mask ventilation device.

Background technique

Laryngeal mask as an effective means for airway management, especially in general anesthesia, can effectively establish a safe artificial airway, and has been widely used in clinical practice. However, the traditional laryngeal mask has many shortcomings. First, the single-tube laryngeal mask has no esophageal drainage structure design, so there is a risk of gastric distension and gastric reflux and aspiration during ventilation; secondly, this type of laryngeal mask is an inflatable airbag structure. The sealed form is designed with a free inflatable device, which requires professional assistants to assist in the inflation operation, which is inconvenient for clinical application and is not conducive to the establishment of a rapid artificial airway. In addition, for the double-tube laryngeal masks currently on the market, most of them are inflatable airbag structures, which increases the difficulty and risk of airbag inflation management. Risk of mucosal edema.

SUMMARY OF THE INVENTION

In view of the problems in the prior art, the purpose of this utility model is to provide an automatic inflatable laryngeal mask ventilation device, which is simple, effective, safe and convenient to operate, and can effectively reduce damage and realize the establishment of an artificial airway for the laryngeal mask. .

In order to achieve the above object, the technical scheme of the present utility model is:

An automatic inflatable laryngeal mask ventilation device, comprising a sealing bag, a main body tube and a joint, wherein the main body tube comprises a mask body, a ventilation tube and a drainage tube, the sealing bag is wrapped around the outer side of the mask body, and the The main body tube is shaped according to the natural arc of the oral cavity and throat airway and has an arc shape, and has a proximal end for probing into the oral cavity and a distal end located outside the oral cavity, and the main body tube is divided into parallel ventilation tubes and A drainage tube, the cover body is connected to the proximal end of the main body tube, and the cover body has a cover belly forming a concave inner cavity and a cover back on the opposite side, the cover belly is communicated with the ventilation tube, so The back of the cover is attached with a rucksack board, and the surface of the rucksack board and the back of the cover is provided with a groove to realize the cooperation with the back of the cover to form a sealed cavity, and the belly of the cover body is arranged to communicate with the cavity. The ventilation hole of the body is used to realize that during the inflation and exhaust of the ventilation tube, the gas enters and leaves the cavity to drive the change of the volume of the cavity, and the surface of the cover body in contact with the vocal part of the throat is provided with a soft Sealant pad to achieve adaptive fit with the peripheral mucosa of the laryngopharyngeal glottis.

Further, the sealing rubber pad and the backpack board are arranged in an integrated structure.

Further, the drainage tube is arranged in the ventilation tube, and the sealing bag is provided with an opening communicating with the drainage tube.

Further, the drainage tube is fitted with the cover body to form a ridged structure.

Further, the ventilation pipe and the cover body are arranged to be tilted upward.

Further, the ventilation holes are respectively arranged on both sides of the drainage tube.

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

Further, the ventilation port at the proximal end and the air supply port at the distal end of the ventilation tube are set to be circular, oval, crescent or dumbbell-shaped.

Further, the distal end of the main body tube is connected with a joint, and the joint is provided with a tracheal orifice and a gastric tube orifice which are respectively communicated with the ventilation tube and the drainage tube.

Further, the sealing rubber pad is a solid soft rubber pad, and the material is preferably Shore hardness≤10 degrees.

Compared with the prior art, the automatic inflatable laryngeal mask ventilation device provided by the utility model has a distinctive structure, is easy to operate, and has the following beneficial effects:

1) This device can quickly, safely and effectively establish an artificial airway. The ventilation device has little damage and is easy to operate, which can improve the management level of the artificial airway by medical staff;

2) The device has the function of esophageal drainage, and the independent esophagus drainage trachea structure design prevents aspiration caused by esophageal reflux, and the clinical application is safer;

3) The device can have the function of airway exploration. The flexible video laryngoscope can enter the airway through the unilateral ventilation tube of the main tube through the joint and enter the airway through the glottis, so as to meet the requirements of clinical airway exploration and diagnosis and treatment;

4) This device is equipped with the new type of laryngeal mask with pre-shaped + self-filling/exhausting cavity structure design, which is automatically shaped, fitted, sealed and ventilated according to the structural characteristics of the oropharyngeal cavity. The self-filling/exhausting cavity structure can be based on The patient's spontaneous breathing rhythm automatically adjusts the balloon size. That is, when the patient is in a positive pressure supply state, the ventilation pressure in the ventilation pipe increases, the cavity automatically opens, enters a filling state, and the sealing of the cover body is strengthened; when the patient is in a negative pressure exhaust state, the ventilation pressure in the ventilation pipe decreases, The cavity is automatically exhausted and enters the collapsed state, the pressure of the cover body on the surrounding tissue is reduced, the continuous compression is reduced, and the risk of local tissue compression injury is reduced.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic structural diagram of an automatic inflatable laryngeal mask ventilation device.

FIG. 2 is a full cross-sectional view of an automatic inflatable laryngeal mask ventilation device of FIG. 1 .

FIG. 3 is a top view of an automatic inflatable laryngeal mask ventilation device of FIG. 1 .

In the picture: 1. Sealing bag, 11. Sealing pad, 12. Backpack board, 2. Main body tube, 21. Cover body, 212. Ventilation hole, 22. Ventilation tube, 23. Drainage tube, 231. Opening, 232 . ridge, 3. joint, 31. tracheal orifice, 32. gastric tube orifice.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figures 1, 2 and 3, as a preferred embodiment of the present invention, an automatic inflatable laryngeal mask ventilation device includes a sealing bag 1, a main body tube 2 and a joint 3, wherein the main body tube 2 includes The cover body 21, the ventilation tube 22 and the drainage tube 23, the sealing bag 1 is wrapped around the outer side of the cover body 21, the main body tube 2 is shaped according to the natural curvature of the oral cavity and the throat airway and is arc-shaped, and has a function for probing. into the proximal end of the oral throat and the distal end outside the oral cavity, and the main body tube 2 is divided into a parallel 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 belly forming a concave cavity and a cover back on the opposite side, the cover belly is communicated with the ventilation tube 22, the cover back is attached with a rucksack plate 12, and the rucksack is A groove is provided on the surface of the plate 12 that is attached to the cover back to form a sealed cavity in cooperation with the cover back. In the process of inflating and exhausting the air pipe 22, the gas enters and leaves the cavity to drive the change of the cavity volume, and the surface of the cover body 21 in contact with the throat sound part is provided with a soft sealing rubber pad 11, so as to realize the The mucous membrane tissue around the laryngopharyngeal glottis is adapted to fit the outer edge of the cover body 21 and the inner side of the sealing pad 11 of the sealing bag to form the sealing ring/surface of the mask body 21, wherein the sealing pad 11 is a solid soft rubber The pad is pre-molded by injection molding, and the material is preferably Shore hardness ≤ 10 degrees, which is close to the softness of the peripheral mucosal tissue of the glottis. In the process of anesthesia and ventilation of the patient, oxygen can be independently ventilated and exhausted to the patient's lungs through the open ventilation tube 22 through the proximal tracheal port 31 and the glottis; the esophageal drainage tube 23 serves as gastric drainage and prevention. The special cavity for aspiration can prevent the occurrence of flatulence and gastric reflux by inserting a gastric tube, and can clean the stomach contents in real time to reduce the probability of aspiration.

When the laryngeal mask ventilation device provided by the utility model is applied, the device can quickly, safely and effectively establish an artificial airway, the ventilation device is less damaged, simple to operate, and can improve the management level of the medical staff on the artificial airway. In order to provide breathing and ventilation for anesthetized patients during surgery, the new laryngeal mask ventilation device is inserted into the patient's mouth and throat. When the device is installed in the patient's throat, the proximal end of the sealing bag 1 is just around the esophagus orifice. A sealing joint is formed, and at the same time, the proximal drainage port of the drainage tube 23 inside the cover body 21 is aligned with the esophageal orifice, the ventral edge of the sealant pad 11 is fitted and sealed on the peripheral mucosal tissue of the airway vocal tract, and the ventilation tube 22 can be directly established. Artificial breathing access, used to ventilate anesthetized patients during surgery, so that the patient can maintain normal breathing, while being isolated from the patient's esophageal tube, and avoid esophageal reflux into the airway.

Secondly, the device has the function of esophageal drainage, and the independent esophageal drainage trachea structure is designed to prevent aspiration caused by esophageal reflux, and the clinical application is safer.

In addition, the device can have the function of airway exploration. The flexible video laryngoscope can enter the airway through the unilateral ventilation tube 22 of the main tube through the joint 3 and enter the airway through the glottis, so as to meet the requirements of clinical airway exploration and diagnosis and treatment.

In addition, the device has the new type of laryngeal mask with pre-shaped + self-filling/exhausting cavity 12 structure design, according to the structural characteristics of the oropharyngeal cavity, automatic shaping, sealing and ventilation, self-filling/exhausting cavity 12 structure The balloon size can be automatically adjusted according to the patient's spontaneous breathing rhythm. That is, when the patient is in a positive pressure supply state, the ventilation pressure in the ventilation tube 22 is increased, the cavity is automatically opened, and enters a filling state, and the sealing of the cover body 21 is strengthened; when the patient is in a negative pressure exhaust state, the ventilation tube 22 is open. When the air pressure is reduced, the cavity is automatically exhausted and enters a collapsed state, the pressure of the cover body 21 on the surrounding tissue is reduced, continuous compression is reduced, and the risk of local tissue compression injury is reduced.

Preferably, the sealing rubber pad 11 and the back bag board 12 are set as an integrated structure, pre-shaped into a cover-like structure, and the sealing rubber pad 11 is a solid pre-molded non-inflatable design, and the material is soft, preferably Shao Made of plastic with a hardness of less than 10 degrees, it can effectively fit on the mucosal folds around the glottis to form a sealing ring and isolate the ventilation area, providing a high-pressure airflow channel for the airway.

Specifically, the drainage tube 23 is arranged in the ventilation tube 22, and the sealing bag 1 is provided with an opening 231 that communicates with the drainage tube 23. The drainage tube 23 of the esophagus is located inside the tube, and the drainage tube 23 is located at the far end of the tube. The ends extend to the proximal end to form a proximal esophagus drainage port and a distal esophageal drainage port, respectively. 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 occlusive anastomosis on the patient's esophageal orifice, reducing the risk of aspiration caused by reflux.

For better technical effect, the drainage pipe 23 at the proximal end is attached to the cover body 21 to form a ridged structure 232, and the tracheal port 31 on the ventral side of the cover body 21 is located at the proximal end of the ventilation pipe 22, preferably left and right Symmetrical distribution; at the same time, in order to ensure the passing efficiency of bronchoscopy 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 esophagus drainage pipe 23 on the ventral side of the cover body 21 extends toward the ventral side of the cover body 21 to form a diffuse ventilation groove; During the intubation process, the epiglottis cartilage can slide along the direction of the ridge to the proximal tracheal orifice 31 of the pipeline, which can effectively support and guide the sliding of the epiglottis cartilage, reduce epiglottis reflex, and avoid the occurrence of poor ventilation caused by the closure of the proximal tracheal orifice 31. Improve ventilation safety, expand the hyperbaric oxygen cloud area at the vocal door, and enhance the effect of airway sealing and ventilation.

Specifically, the ventilation holes 212 are respectively arranged on both sides of the drainage tube 23 to satisfy the air passing effect of the cover body 21 and avoid blockage of the epiglottis cartilage.

Preferably, the ventilation tube 22 and the cover body 21 at the proximal end are arranged to be tilted upward, which improves the fit effect of the cover body 21 and the sealing pad 11 with the tissue in the oral cavity.

In the above embodiment, the ventilation tube 22 is gradually reduced from the proximal end to the distal end. The crescent shape or dumbbell shape can reduce the resistance of ventilation. During ventilation, the ventilation cross-sections of the proximal tracheal port 31 and the distal air supply port are larger, reducing the risk of high-pressure ventilation to the patient's lungs.

The drainage tube 23 is used to insert the gastric tube into the patient's esophagus until it is in the patient's stomach, so as to discharge the gas or residual gastric juice in the patient's stomach. The upper and lower concave structure improves the effect of gastric reflux and facilitates the insertion of gastric tube.

In the present embodiment, a joint 3 is connected to the distal end of the main body tube. The joint 3 is provided with a tracheal tube port 31 and a gastric tube port 32 which are respectively communicated with the ventilation tube 22 and the drainage tube 23, and breathing is realized through the joint 3. Machine oxygen supply and esophageal drainage function.

Finally, it should also be noted that, herein, the term "comprising" or any other variation thereof is intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements, but also Also included are other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprises" does not preclude the presence of additional identical elements in a process, method, article, or device that includes the element. The embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments may be referred to each other.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An automatic inflation laryngeal mask airway device, comprising a sealing bag (1), a main tube (2) and a connector (3), characterized in that the main tube (2) comprises a mask body (21), an airway tube (22) and a drainage tube (23), the sealing bag (1) wraps around the outside of the mask body (21), the main tube (2) is shaped into an arc according to the natural radian of the oral cavity and the throat airway, and has a proximal end used for extending into the throat of the oral cavity and a distal end located outside the oral cavity, and the main tube (2) is divided into the airway tube (22) and the drainage tube (23) which are arranged side by side, the mask body (21) is connected to the proximal end of the main tube (2), the mask body (21) has a mask belly forming a concave inner cavity and a mask back on the opposite side, the mask belly of the mask body (21) is communicated with the airway tube (22), the mask back is attached with a knapsack plate (12), be provided with the recess on the face of the knapsack board (12) and the laminating of cover back of the body in order to realize forming sealed cavity with the cooperation of cover back of the body, the cover abdomen of the cover body (21) sets up the intercommunication air vent (212) of cavity are used for realizing in breather pipe (22) are aerifyd and the exhaust process, gaseous business turn over the change of cavity in order to drive the cavity volume, just set up mild sealed cushion (11) on the face of the cover body (21) and the contact of throat glottis to realize laminating with laryngopharynx portion glottis periphery mucous membrane tissue adaptability.

2. The laryngeal mask airway device according to claim 1, characterised in that the sealing cushion (11) is arranged in a one-piece construction with a dorsal capsule plate (12), and that the dorsal capsule plate (12) is a membrane-like construction with a wall thickness of 0.3-2.5 mm.

3. A laryngeal mask airway device according to claim 1, characterised in that the drain tube (23) is arranged in the airway tube (22) and that the sealing cuff (1) is provided with an opening (231) communicating with the drain tube (23).

4. A laryngeal mask airway device according to claim 1 or 3, characterised in that the drain tube (23) conforms to the mask body (21) forming a ridge structure (232).

5. A laryngeal mask airway device according to claim 1 or 3, characterised in that the airway tube (22) and the mask body (21) are arranged to be turned upwards.

6. A laryngeal mask airway device according to claim 1, characterised in that the air vents (212) are arranged on either side of the drain tube (23).

7. A laryngeal mask airway device according to claim 1, characterised in that the airway tube (22) tapers from a proximal end to a distal end.

8. A laryngeal mask airway device according to claim 1, characterised in that the proximal located air port and the distal located air delivery port of the airway tube (22) are arranged in a circular, oval, crescent or dumbbell shape.

9. The laryngeal mask airway device according to claim 1, characterised in that a connector (3) is connected to the distal end of the main tube (2), and that an air tube orifice (31) and a stomach tube orifice (32) are arranged in the connector (3) and communicate with the airway tube (22) and the drainage tube (23), respectively.

10. A laryngeal mask airway device according to claim 1, characterised in that the sealing rubber (11) is a solid soft rubber, preferably with a shore hardness of 10 degrees or less.

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