CN112972840A - Automatic inflation laryngeal mask ventilation device - Google Patents

Abstract

The invention belongs to the technical field of medical equipment, and particularly discloses 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 invention has simple, effective, safe and convenient operation, and can effectively reduce the damage and realize the establishment of the artificial airway of the laryngeal mask.

Description

Automatic inflation laryngeal mask ventilation device

Technical Field

The invention relates to the technical field of medical equipment, in particular to an automatic inflation laryngeal mask airway device.

Background

The laryngeal mask is an effective means for airway management, can effectively establish a safe artificial airway particularly in general anesthesia surgery, and is widely applied in clinic. However, the traditional laryngeal mask has more defects, firstly, the single-tube laryngeal mask has no esophagus drainage structure design, and risks of flatulence and gastric reflux aspiration during ventilation exist; secondly, this type laryngeal mask is inflatable gasbag structure sealed form, and the design has free aerating device, needs professional assistant to assist the inflation operation, and clinical application is inconvenient, is unfavorable for quick artifical air flue's establishment. In addition, aiming at the double-tube laryngeal mask on the market at present, the laryngeal mask is mostly of an inflatable air bag structure, the difficulty and risk of air bag inflation management are increased, the inflation quantity of the air bag cannot be accurately judged, the operation is improper, the pressure of the air bag is easily caused to be too high, and the risk of edema of the throat mucous membrane is easily caused.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide an automatic inflation laryngeal mask airway device which is simple, effective, safe and convenient to operate, and can effectively reduce damage and realize establishment of a laryngeal mask artificial airway.

In order to achieve the purpose, the technical scheme of the invention is as follows:

an automatic inflation laryngeal mask ventilation device comprises a sealing bag, a main body pipe and a connector, and is characterized in that the main body pipe comprises a mask body, a ventilation pipe and a drainage pipe, the sealing bag wraps the outer side of the mask body, the main body pipe is shaped into an arc shape according to natural radian of an oral cavity and a throat airway, is provided with a near end used for penetrating into the oral cavity and the throat and a far end positioned outside the oral cavity, is divided into the ventilation pipe and the drainage pipe which are arranged in parallel, the mask body is connected to the near end of the main body pipe, is provided with a mask abdomen forming a concave inner cavity and a mask back positioned on the opposite side, is communicated with the ventilation pipe, is attached with a knapsack plate, is provided with a groove on the surface attached with the knapsack plate to form a sealed cavity matched with the mask back, and is provided with a ventilation hole communicated with the cavity for realizing the processes of ventilation pipe inflation and exhaust, gas enters and exits the cavity to drive the change of the cavity volume, and a soft sealing rubber gasket is arranged on the contact surface of the cover body and the glottis of the throat, so as to realize the adaptive fit with the peripheral mucous membrane tissue of the glottis of the laryngopharynx.

Further, the sealing rubber mat and the knapsack board are arranged to be an integrated structure.

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

Furthermore, the drainage tube and the cover body are attached to form a ridge structure.

Further, the vent pipe and the cover body are arranged to be tilted upwards.

Further, the vent holes are respectively arranged on two sides of the drainage tube.

Further, the vent tube tapers from the proximal end to the distal end.

Further, the vent hole of the vent pipe positioned at the near end and the air supply hole positioned at the far end are arranged in a circular shape, an oval shape, a crescent shape or a dumbbell shape.

Further, the far end of the main body pipe is connected with a joint, and a trachea opening and a stomach opening which are respectively communicated with the vent pipe and the drainage pipe are arranged in the joint.

Furthermore, the sealing rubber gasket is a solid soft rubber gasket, and the material is preferably selected to have Shore hardness less than or equal to 10 degrees.

Compared with the prior art, the automatic inflation laryngeal mask ventilating device provided by the invention has the advantages of unique structure, convenience in operation and the following beneficial effects:

1) the device can quickly, safely and effectively establish the artificial airway, has small damage and simple operation, and can improve the management level of medical personnel on the artificial airway;

2) the device has the esophagus drainage function, the structure design of the independent esophagus drainage trachea prevents the mistaken suction caused by the backflow of the esophagus, and the clinical application is safer;

3) the device can have an airway exploration function, and the flexible video laryngoscope can penetrate through the single-side vent pipe of the main body pipe through the joint and enter the airway through the glottis, so that the exploration and diagnosis and treatment requirements of clinical airways are met;

4) this device possesses this novel laryngeal mask and adopts moulding in advance + from filling/exhaust formula cavity structural design, according to the automatic moulding laminating of oropharyngeal cavity structural feature sealed ventilation, from filling/exhaust formula cavity structural can be according to patient's spontaneous breathing rhythm automatic adjustment gasbag size. When the patient is in a positive pressure air supply state, the ventilation pressure in the ventilation pipeline is increased, the cavity is automatically opened and enters a filling state, and the sealing performance of the mask body is enhanced; when the patient was in negative pressure exhaust state, the pressure of ventilating in the air duct reduced, and cavity self-bleeding gets into the shrivelled state, and the cover body reduces to surrounding tissue pressure, reduces the oppression of continuation, reduces the risk that local tissue oppressive damage takes place.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Figure 1 is a schematic diagram of the structure of an automatic inflation laryngeal mask airway device.

Figure 2 is a full sectional view of the self-inflating laryngeal mask airway device of figure 1.

Figure 3 is a top view of the self-inflating laryngeal mask airway device of figure 1.

In the figure: 1. the disposable stomach tube comprises a sealing bag, 11 sealing rubber pads, 12 a dorsal bag plate, 2 a main tube, 21 a cover body, 212 a vent hole, 22 a vent tube, 23 a drainage tube, 231 an opening, 232 a ridge-shaped structure, 3 a joint, 31 a trachea opening and 32 a stomach tube opening.

Detailed Description

The technical solution 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. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, 2 and 3, an automatic inflating laryngeal mask airway device as a preferred embodiment of the present invention comprises a sealing cuff 1, a main tube 2 and a connector 3, wherein the main tube 2 comprises a mask body 21, an airway tube 22 and a drainage tube 23, the sealing cuff 1 wraps around the outside of the mask body 21, the main tube 2 is shaped into an arc according to the natural curvature of the mouth and the throat airways, and has a proximal end for penetrating into the throat of the mouth and a distal end located outside the mouth, and the main tube 2 is divided into the airway tube 22 and the drainage tube 23 which are arranged in parallel, 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 is communicated with the airway tube 22, the mask back and a flap 12 are attached to the face of the back flap 12, which is attached to the mask back, so as to form a sealed cavity in cooperation with the mask back, the cover abdomen of the cover body 21 sets up the intercommunication the air vent 212 of cavity is used for realizing the breather pipe 22 is aerifyd and the exhaust in-process, gaseous business turn over the change of cavity in order to drive the cavity volume, just set up soft sealed cushion 11 on the face of the cover body 21 and the contact of throat sound department door to realize laminating the outer fringe of the cover body 21 with the sealed cushion 11 inboard of sealed capsule with the laminating of throat sound department glottis periphery mucous membrane tissue adaptability, form the sealing ring/face of the cover body 21, wherein sealed cushion 11 is solid soft cushion, moulds injection molding in advance, and the preferred shore hardness of material is less than or equal to 10 degrees, is close the compliance of sound door mouth periphery mucous membrane tissue. During anesthetic ventilation of a patient, oxygen may be independently ventilated and evacuated from the patient's lungs through the proximal tracheal port 31 and the glottic port through the open ventilation tube 22; the drainage tube 23 of the esophagus is used as a special cavity for stomach drainage and mistaken suction prevention, and can prevent the occurrence of flatulence and gastric reflux in a mode of being placed into a stomach tube, clean the content in the stomach in real time and reduce the probability of mistaken suction.

When the laryngeal mask airway device provided by the invention is applied, the device can quickly, safely and effectively establish an artificial airway, the ventilation device has small damage and simple operation, can improve the management level of medical staff to the artificial airway, is used for providing breathing ventilation for the anaesthetized patient in the operation, is arranged in the oral cavity and the throat part of the patient, when the throat part of the patient is arranged in place, the near end of the sealing bag 1 is just in sealing joint around the esophageal orifice, meanwhile, the near end drainage port of the drainage tube 23 in the cover body 21 is aligned with the esophageal orifice, the ventral lateral edge of the sealing rubber cushion 11 is in fit sealing on the peripheral mucous membrane tissue of the glottic orifice of the airway, the ventilation tube 22 can directly establish an artificial respiration channel for ventilating the patient anesthetized in the operation, thereby enabling the patient to keep breathing normally while being isolated from the patient's oesophageal tube and avoiding oesophageal reflux into the airway.

Secondly, this device possesses the esophagus drainage function, and independent esophagus drainage trachea structural design prevents the mistake that the esophagus refluence arouses and inhales, and clinical application is safer.

Moreover, the device can have an airway exploration function, and the flexible video laryngoscope can pass through the main body tube single-side vent tube 22 through the connector 3 and enter the airway through the glottis, so that the exploration and diagnosis and treatment requirements of the clinical airway are met.

In addition, this device possesses this novel laryngeal mask and adopts moulding in advance + from filling/exhaust formula cavity 12 structural design, according to the sealed ventilation of the automatic moulding laminating of oropharyngeal cavity structural feature, from filling/exhaust formula cavity 12 structure can be according to patient's autonomic breathing rhythm automatic adjustment gasbag size. When the patient is in a positive pressure air supply state, the ventilation pressure in the ventilation pipe 22 is increased, the cavity is automatically opened and enters a filling state, and the sealing performance of the mask body 21 is enhanced; when the patient is in the negative pressure exhaust state, the ventilation pressure in the ventilation pipe 22 is reduced, the cavity is automatically exhausted and enters the collapse state, the pressure of the cover body 21 on surrounding tissues is reduced, continuous compression is reduced, and the risk of local tissue compressive injury is reduced.

Preferably, sealed cushion 11 sets up to the integral structure with knapsack board 12, and the moulding is the cover-shaped structure in advance, just sealed cushion 11 is solid to mould in advance and exempts from to aerify the design, and the material is soft, and the plastic preparation that can preferably shore hardness is less than 10 degrees, and it can effectively laminate on the mucous membrane fold of glottis periphery, forms the sealing ring and keeps apart the ventilation zone, provides high-pressure airflow channel for the air flue.

Specifically, the drainage tube 23 is arranged in the vent tube 22, the sealing bag 1 is provided with an opening 231 communicated with the drainage tube 23, the drainage tube 23 of the esophagus is positioned in the pipeline and extends from the far end to the near end of the pipeline to form a near-end esophagus drainage port and a far-end esophagus drainage port respectively. The proximal part of esophagus drainage chamber can imbed the inboard of patient's esophagus mouth, and the elasticity of peripheral material texture can carry out the shutoff nature to patient's esophagus mouth and coincide, reduces the mistake that the refluence arouses and inhales and take place the risk.

For better technical effect, the drainage tube 23 at the proximal end is attached to the cover 21 to form a ridge-shaped structure 232, and the trachea mouth 31 at the ventral side of the cover 21 is located at the proximal end of the ventilation tube 22, and may preferably be distributed symmetrically; meanwhile, in order to ensure the efficiency of lung exploration by the bronchofiberscope, the tracheal opening 31 can be shaped into an asymmetric structure, namely, the tracheal opening is divided into a ventilation channel and an exploration channel. The ventral esophageal drainage tube 23 of the cover body 21 extends towards the ventral side of the cover body 21, so that a dispersion type ventilation slot is formed; and the ventral side of the inner cover body 21 at the near end of the main tube forms a ridge structure 232, and in the tube placing process, the epiglottis cartilage can slide towards the near end air tube opening 31 of the pipeline along the ridge direction, so that the epiglottis cartilage is effectively supported and guided to slide, the reverse folding of the epiglottis is reduced, the problem of unsmooth ventilation caused by the blockage of the near end air tube opening 31 is avoided, the ventilation safety is improved, the glottic high-pressure oxygen cloud area is enlarged, and the sealed ventilation effect of the air passage is enhanced.

Specifically, the vent holes 212 are respectively disposed at both sides of the drainage tube 23 to satisfy the air passing effect of the mask body 21 and avoid the blockage of epiglottis.

Preferably, the vent tube 22 and the cover 21 at the proximal end are arranged to be tilted upward, which improves the fit of the cover 21 and the sealing cushion 11 to the tissues in the mouth.

In the above embodiment, the ventilation tube 22 is gradually reduced from the proximal end to the distal end, and specifically, the proximal air tube opening 31 and the distal air supply opening of the ventilation tube 22 are arranged in a circular shape, an oval shape, a crescent shape or a dumbbell shape, so that the resistance of ventilation can be reduced, and the ventilation cross section of the proximal air tube opening 31 and the distal air supply opening is larger when ventilation is performed, so that the risk of damage to the lung of the patient caused by high-pressure ventilation is reduced.

The drainage tube 23 is used for inserting the stomach tube into the esophagus of a patient and into the stomach of the patient so as to discharge gas or residual gastric juice in the stomach of the patient, the drainage port at the near end of the drainage tube 23 can be in a horn shape or a fish mouth type upper and lower concave structure, the effect of receiving stomach reflux is improved, and meanwhile, the stomach tube is convenient to place.

In this embodiment, the distal end of the main tube is connected with a connector 3, and a trachea opening 31 and a stomach opening 32 which are respectively communicated with the ventilation tube 22 and the drainage tube 23 are arranged in the connector 3, so that the functions of oxygen supply and esophagus drainage of the breathing machine are realized through the connector 3.

Finally, it should also be noted that, in this document, the term "comprises/comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the various embodiments can be referred to each other.

The previous description of the disclosed embodiments is provided to enable 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 applied to 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.

Images