CN110624166A

CN110624166A - Folding laryngeal mask structure

Info

Publication number: CN110624166A
Application number: CN201911028563.0A
Authority: CN
Inventors: 林必盛; 林家龍; 林家瑩; 张加强
Original assignee: Shanghai Jifu Medical Technology Co Ltd
Current assignee: Shanghai Jifu Medical Technology Co Ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2019-12-31

Abstract

The embodiment of the invention discloses a folding laryngeal mask structure, which can be used for placing a smooth respiratory tract inside a throat of a patient and comprises a supporting piece, wherein one side of the supporting piece is provided with an opening part, the other side of the supporting piece is provided with a backrest part, one side of the backrest part extends outwards to form a pipe body, a groove part is arranged around the opening part, and the pipe body and the opening part can be mutually communicated; a telescopic sleeve body which is provided with a first sleeve barrel part, a second sleeve barrel part connected with the first sleeve barrel part and a restriction part, wherein the edge of the first sleeve barrel part can be fixedly arranged in the groove part, and a similar inflatable bag which can be arranged at one side of the backrest part is formed between the first sleeve barrel part and the second sleeve barrel part in a reverse folding mode, and the restriction part is fixedly sleeved between the supporting part and the pipe body, wherein the telescopic sleeve body has high ductility and viscosity and can be used for expanding tension when inflating; and one end of the one-way pipe is arranged on the inflatable bag, the other end of the one-way pipe is arranged on one side of the pipe body, and gas can be injected from one end of the one-way pipe in one direction to expand the inflatable bag.

Description

Folding laryngeal mask structure

Technical Field

The present invention relates to a laryngeal mask airway, and more particularly, to a foldable laryngeal mask structure that allows a user to slightly expand under positive pressure breathing conditions to prevent air leakage.

Background

In basic resuscitation or advanced cardiopulmonary first aid, it is a very difficult technique that the ventilation of the respiratory tract and the ventilation of the lung are important, but once the ventilation is successful, the emergency effect is most significant, and relatively the help to the patient is the greatest. In addition to the endotracheal intubation approach, current methods of emergency airway management and pulmonary ventilation are as follows: 1. artificial respiration from mouth to mouth or mouth to mask; 2. positive pressure ventilation is carried out on a mask containing a gas storage bag, and then artificial oropharynx or nasopharynx respiratory tract is supplemented; 3. mask type automatic resuscitation and ventilation (the angle of the head and neck must be maintained), and artificial oropharynx or nasopharynx respiratory tract are used as auxiliary materials.

However, the aforementioned methods are more or less limited by different conditions, such as: 1. air leakage between the mask and the face; 2. improper inflation of the stomach; 3. when inhalation, choking or stomach content reflux occurs, the airway cannot be properly protected; 4. when there is trauma on the face, it cannot protect the respiratory tract.

Of course, most of the problems described above can be eliminated by the first aid method using the endotracheal tube, but the first aid staff cannot always perform the endotracheal tube smoothly due to various environmental restrictions and patient conditions. In addition, in the current medical situation, the most perfect and less satisfactory endotracheal intubation training cannot be performed for each emergency responder on site, and some countries (such as the united states) or even strict regulations may prevent the unlicensed medical personnel from performing invasive endotracheal intubation, so that in addition to the emergency mode of endotracheal intubation, there is a need for an emergency mode and device for airway treatment and pulmonary ventilation that can be easily performed and that can avoid the aforementioned drawbacks.

In view of this, the industry has developed an inflatable laryngeal mask, as shown in figure 1, which comprises a tube 1, a mask 2 fitted over one end of the tube, and a stem 3 attached to the stem 2 and an inflation tube 4 attached to one end of the stem 3. The using method comprises the following steps: firstly, selecting an inflatable laryngeal mask with a proper size, exhausting air in the mask sac 3, placing the mask body 2 into the mouth of a patient, and enabling the top of the mask body 2 to correspond to the inner surface of the upper row of teeth of the patient to keep the neck movable and the head extending; slightly pressing the mask 3 by the index finger to be placed at the back part of the wall of the throat, and guiding the mask 3 to the correct position; slightly pressing the catheter 1 downwards to confirm that the mask balloon 3 is completely inserted; finally, the mask 3 is inflated by the inflation tube 4 to form a closed cushion ring surrounding the glottic opening of the patient, so that oxygen or anesthetic gas can be provided to the lung of the patient by the catheter 1.

Although the conventional prior art can improve the emergency treatment of conventional respiratory tract treatment and pulmonary ventilation, the following limitations still exist.

One of the reasons for teaching of the commonly used methods of the conventional inflatable laryngeal mask is that after the conventional laryngeal mask is placed in the throat of a patient, the inflation pressure of the conventional inflatable laryngeal mask should be maintained at 60cm-H2O, which is mainly based on the thickness of the used mask 3, the collapsed mask 3 needs to be supported by the inflation pressure to have the functions of sealing the airway and preventing air leakage, but during the operation, the side wall must be expanded by pressurization to prevent air leakage, when the inflation pressure reaches 60 ~ 120 cm-H2O, the excessively inflated pressure presses the mucosa of the larynx, the mucosa of the larynx will be ulcerated after a long time, and even ischemic injury of the mucosa will be caused, so that the pressure can be adjusted back to 60cm-H2O frequently, and in fact, once the side wall of the larynx is pressed to exceed 25cm-H2O, blood flow under the mucosa will not be affected, and pharyngeal pain of the patient after waking up can be easily caused.

The conventional laryngeal mask has the advantages that the size of the laryngeal mask is selected according to the weight of a patient, the large telescopic space cannot be provided due to the material design of the mask bag 3, the expansion range is small, the laryngeal mask with a single size cannot meet the requirements of most patients, if the size of the laryngeal mask is applied to unsuitable patients, the success rate of implantation is influenced, the laryngeal mask is forcibly implanted with the problem of risk and air leakage, and therefore various sizes are required to be prepared to prevent various sudden situations.

The three parts are that the elastic coefficient of the cover body of the conventional laryngeal mask is poor, even if higher air pressure is introduced, the deformation of a larger amplitude cannot be generated, therefore, the laryngeal mask which is suitable for the throat size of a patient needs to be selected, the space at the throat is larger than the throat, in the arranging process, an operator needs to enable the front end of the laryngeal mask to pass through the throat, the psychological pressure for avoiding hurting the patient needs to be overcome firstly, the laryngeal mask operated by a general medical institution is used as a method for smoothing the respiratory tract, an anesthesiologist or related professionals are usually required to operate the laryngeal mask, in addition, the contact area of the mask and the inner wall of the throat of the patient can be reduced, the displacement phenomenon is easy to occur in the arranging process, the risk of air leakage is further improved, in addition, the elastic coefficient is poor along with poor softness, more skills need to be trained in the arranging process, and the time familiar to the training personnel is.

Fourth, because the whole shape of general laryngeal mask is comparatively fixed, this pipe can't moderate degree turn, must first skill turn round avoid the epiglottis during the installation, the mode of artifical skill is naturally accompanied with the risk of installing the skill, if fill in by force then injure this patient's throat easily and influence follow-up recovery situation, consequently, must let operating personnel carry out abundant training time in advance to avoid carrying out the work in-process and taking place the not easy thing of installation, this also is the important concern about patient's follow-up recovered health.

Fifth, a mouth piece is usually additionally arranged when the conventional laryngeal mask is used for preventing the patient from biting the inflation tube 4 due to physiological reaction to influence the air intake flow of oxygen, the conventional mouth piece is mainly divided into two types, one type is an additional mouth piece, the mouth piece is generally arranged on at least one side of the left side and the right side of the inflation tube 4, the side corner for opening the mouth of the patient bites the mouth piece firstly without pressing the inflation tube 4, but the mouth piece is arranged on the side corner of the mouth for a long time in such a way, and the side corner of the mouth of the patient with fragile skin is easy to rub due to the unilateral arrangement, so that the discomfort of skin breaking, bleeding and the like is caused; the other is a fixed type mouth piece which is generally directly fixed at the outer side of one end of the inflation tube 4, although the mouth piece can be improved to be occluded by the upper and lower rows of teeth in the middle to avoid injuring the fragile side corners of the skin of the epidermis, the position of the epiglottis is often required to be avoided in the process of arranging the laryngeal mask in a rotating and skillful manner, at the moment, the fixed type mouth piece can also rotate together to easily block the mouth of a patient due to insufficient space, the operability is still enhanced, and the success rate of placing the laryngeal mask is even influenced.

Based on the above-mentioned various deficiencies, the functions thereof are still not fully perfected, and there is still room for improvement in the prior art.

Disclosure of Invention

In view of the above disadvantages, the present invention provides a foldable laryngeal mask structure, which mainly utilizes a foldable structural design to manually increase the air pressure inside the laryngeal mask, adjust the outward expansion amplitude of the laryngeal mask to be suitable for patients with different weights, and meanwhile, match the pressure change generated by the patient in a positive pressure breathing state to assist the mask body to more firmly and snugly fit the throat of the patient.

The invention provides a folding laryngeal mask structure, which can be placed in the throat of a patient to smooth the respiratory tract, and comprises: a supporting piece, one side of which is an opening part and the other side is a backrest part, and a pipe body is formed by extending one side of the backrest part outwards, a groove part is arranged around the opening part, and the pipe body and the opening part can be mutually communicated; a telescopic sleeve body which is provided with a first sleeve cylinder part, a second sleeve cylinder part and a restriction part, wherein the edge of the first sleeve cylinder part can be fixedly arranged in the groove part, a similar inflatable bag which can be arranged at one side of the backrest part is formed between the first sleeve cylinder part and the second sleeve cylinder part in a reverse folding mode, and the restriction part is fixedly sleeved between the supporting part and the pipe body, wherein the telescopic sleeve body has viscosity and tension which can be expanded when inflating; and one end of the one-way pipe is arranged on the inflatable bag, the other end of the one-way pipe is arranged on one side of the pipe body, and gas can be injected from one end of the one-way pipe in one direction to expand the inflatable bag.

Therefore, an artificial airway can be constructed in the throat, and air leakage can be avoided.

With the above, in one aspect of the present invention, after injecting a small amount of gas into one end of the one-way pipe, because of the matching design of the materials of the inflatable bag, the pressure of the inflatable bag attached to the throat wall of the patient can be kept at a preset pressure value of 10 cm-H2O-25 cm-H2O, in addition, an open elastic area which can be arranged at one side of the backrest part is formed by utilizing the first sleeve part and the second sleeve part in a reverse folding way, at least one perforation is arranged on the backrest part, and the airflow pressure generated by the positive pressure breathing of the patient is utilized, the open elastic region can be slightly expanded and reduced in a reciprocating way, the influence degree of the indirect compression mode on the throat of a patient is very small, so that the service life of the laryngeal mask placed on a human body is prolonged, the probability of postoperative throat pain of the patient can be reduced, and the injury to the mucous membrane of the larynx can be prevented.

With the above, the second objective of the present invention is to form an inflatable bag-like structure with elastic tension by reversely folding the first sleeve part and the second sleeve part, and to automatically and manually adjust the outward expansion amplitude of the inflatable bag by using a one-way valve during the use process so as to satisfy the throat spaces of patients with different weights.

With the above, the third object of the present invention is to design the material of the bellows body to have a higher elastic coefficient and deformation amount, so as to improve the deformation range and softness of the inflatable bag and the open elastic region, thereby minimizing the front end of the laryngeal mask, reducing the psychological pressure applied by the operator, and reducing the threshold of the operator, and the operator can complete the operation without requiring a highly specialized technician to perform the operation.

With the above, the tube body is made of a deformable material and can be bent in a limited manner to assume an initial state before being disposed in the throat of the patient, and the opening of the opening is relatively biased to at least one of the left side and the right side of the tube body, so that the tube body can be directly introduced into the throat of the patient during installation, thereby eliminating the skill of avoiding the epiglottis, reducing the learning time of trainees, and reducing the installation failure rate.

In addition, the tube body and the mouth piece are designed in a non-linkage manner, namely, when the tube body is rotated, the arrangement position of the mouth piece cannot be influenced, so that the air inlet flow of the tube body can be ensured not to be influenced by occlusion of a patient, and the tube body can be rotated to adjust the position of the laryngeal mask.

Drawings

FIG. 1 is a perspective view of a conventional art.

FIG. 2 is a perspective view of the present invention.

FIG. 3 is an exploded view of the elements of the present invention.

FIG. 4 is a front sectional view of the assembled present invention.

FIGS. 5-1 to 5-4 are schematic views of the folding laryngeal mask structure in assembly.

FIG. 6 is a schematic view showing the tube in an initial state after being constrained.

FIG. 7 is a schematic cross-sectional view of the present invention installed in the throat of a human body.

FIG. 8 is an external view of the mouthpiece.

Fig. 9 is a schematic view of the operation of the mouthpiece.

FIG. 10 is a schematic view showing the mouthpiece attached to the tube.

FIG. 11 is a cross-sectional view of the mouthpiece installed at the mouth of a human body.

FIG. 12 is a cross-sectional view of the auxiliary laryngeal mask of the mouthpiece.

FIG. 13 is a schematic sectional view of the auxiliary laryngeal mask of the mouthpiece.

Figure 14 is a front cross-sectional view of the inflatable-like cuff implementation of the folding laryngeal mask structure of figure 2.

Figure 15 is a front cross-sectional view of the open elastic region embodiment of the folding laryngeal mask structure of figure 2.

In the figure:

fixing part 23b of catheter 1

Annular bent portion 23c of cover 2

Casing 3 pipe connector 24

Inflation tube 4 telescopic sleeve body 30

First sleeve part 31 of patient 10

Second sleeve portion 32 of throat 11

Mouth 33 of respiratory tract 12

Epiglottis 13 coil 40

Esophagus 14 type inflatable bag A

Open elastic zone B of support member 20

The overlapping part C of the opening parts 21

Groove 21a cover structure D

One-way tube 50 of back 22

Through-hole 22a first one-way tube 50a

Second one-way tube 50 of tube body 23

Retainer hole 23a mouth piece 60

A slit 61.

Detailed Description

For the purpose of describing the present invention, the central concept represented in the above summary of the invention, the alzheimer's vehicle is expressed in a specific embodiment. The various elements of the embodiments are described in proportions suitable for the purpose of illustration and not in proportion to the actual elements, as will be understood from the specification.

Referring to fig. 2 ~ fig. 4, fig. 2 is a perspective view of the present invention, fig. 3 is an exploded view of the components of the present invention, fig. 4 is an assembled front sectional view of the present invention, the folding laryngeal mask structure of the present invention, which can be placed in the throat 11 of a patient 10 to clear the airway 12, includes:

a support member 20, one side of which is an opening 21, the other side of which is a backrest 22 provided with at least one through hole 22a, and one side of the backrest 22 extends outward to form a tube 23 with a function of being deformable and recoverable, and a groove 21a is provided around the opening 21, the tube 23 and the opening 21 can be communicated with each other, wherein one end of the tube 23 is provided with a retaining hole 23a, a fixing part 23b is provided at one side of the tube 23, and a plurality of annular bending parts 23c are convexly provided at the other side of the tube 23, in the embodiment, the number of the through holes 22a is 2, the through holes are arranged at one side of the backrest 22 in a facing manner, and a tube connector 24 is provided at one end of the tube 23, and can be used for connecting an external gas generator to introduce oxygen required by the patient 10.

A telescopic sleeve 30 having a first sleeve portion 31, a second sleeve portion 32 connected to the first sleeve portion 31, and a pinch portion 33, the edge of the first sleeve part 31 can be fixed on the groove part 21a, and a similar inflatable bag A which can be arranged at one side of the backrest part 22 and an open elastic area B which can be arranged at one side of the backrest part 22 are formed between the first sleeve part 31 and the second sleeve part 32 in a reverse folding way, and the opening part 33 is sleeved and fixed between the supporting part 20 and the tube body 23, wherein the length of the first sleeve part 31 is larger than that of the second sleeve part 32, and a coil 40 is bound on the edge of the second sleeve part 32, the reverse-folding part for limiting the telescopic sleeve body 30 can be fixed at one side of the opening part 21, and after the inflatable bag is filled with gas, the gas pressure of the inflatable bag can generate a preset pressure value; in the embodiment, the elastic sheath 30 is made of TPE (Thermoplastic Elastomer), so that the elastic sheath 30 has high ductility, viscosity and tension for inflation, and by using the adhesive property of the elastic sheath 30, the elastic sleeve body 30 can be contacted and adhered in the throat 11 for a certain period of time, and at the same time, when the elastic sleeve body 30 is manufactured, the ductility of the telescopic sleeve body 30 can be directly influenced by the formula of the material proportion, so that the preset pressure value is changed, after the preset pressure value is selected by the formula of the selected material proportion, when the air-filled bag is filled with 2ml to 100ml of air, the preset pressure value can be kept constant, wherein, one of the pressure values from 10cm-H2O to 25cm-H2O is selected as the preset pressure value, thereby, the direction of the outward expansion of the inflatable bag A does not cause excessive pressure to the side wall of the throat 11.

In this embodiment, the similar inflatable bag a formed by using the material characteristics of the telescopic sleeve body 30 is utilized, and after inflation, the pressure for pressing the side wall of the throat 11 can be selectively designed to be between 10cm-H2O and 25cm-H2O by using a material formula to select one of the gas pressures as the preset pressure value, so that a certain volume can be obtained and a stable effect can be achieved.

The above is a summary of the basic structure and the assembly process of the components of a preferred embodiment of the present invention, and the principle of the achieved effect is stated as follows:

referring to fig. 5-1 to 5-4, which are schematic views illustrating an assembly of a foldable laryngeal mask structure, first, the edge of the first sleeve portion 31 is fixedly attached to the groove portion 21a in an adhering manner, and then the retractable sleeve body 30 is reversely folded by taking the opening portion 33 as a pivot and attached to one side of the first sleeve portion 31 to form the airbag a, in this embodiment, the one-way tube 50 is divided into a first one-way tube 50a and a second one-way tube 50b for convenient installation, in a front installation operation, one end of the first one-way tube 50a is inserted into the tube body 23 through the retention hole 23a and penetrates out through the perforation 22a, wherein one end of the second one-way tube 50b is directly inserted into the airbag a, and the other end of the second one-way tube 50b is connected to the first one-way tube 50a to complete the communication; at this time, the coil 40 is tied to the edge of the second sleeve part 32, and the airbag a is folded back around the second sleeve part 32 as a pivot, so that the airbag a can be disposed on one side of the backrest 22, meanwhile, an open elastic region B which can be disposed on one side of the backrest 22 is formed between the first sleeve part 31 and the second sleeve part 32, and the open elastic region B is communicated with the through hole 22a, and the elastic sleeve 30 is fixed and limited around the opening 21 by the tension of the coil 40 to form an overlapping portion C, and finally the opening restraining portion 33 is sleeved over the first sleeve part 31 and the second sleeve part 32 and fixed between the support member 20 and the tube body 23, so that the telescopic sleeve 30 and the support member 20 are combined to form a half egg-shaped cover structure D.

Referring to fig. 6, fig. 6 is a schematic view of the tube in an initial state after being constrained. In the present invention, since the tube 23 is placed inside a case in a bending manner for a long time, the tube 23 can be used directly by restricting the outer shape of the tube from bending to an initial state, and the opening direction of the opening 21 is relatively biased to at least one of the left side and the right side of the tube 23; wherein, the supporting member 20 is made of EVA (Ethylene Vinyl Acetate copolymer), the whole is formed by plastic injection molding at low temperature, and the ratio of the raw material is designed to make the supporting member 20 have a memory-like function, i.e. the supporting member 20 is fixed by external force for a long time to generate a slight deformation, and then the supporting member 20 is placed at a certain temperature to restore to the original factory shape, so that when the outer side of the tube 23 contacts the temperature of the throat 11, the initial state can be released slowly to restore, and the opening direction of the opening 21 can be deformed and displaced to the middle position relative to the tube 23.

Referring to fig. 7, fig. 7 is a schematic cross-sectional view of the present invention installed in the throat of a human body. In this embodiment, the opening direction of the opening 21 is set to be relatively biased to the left side of the tube 23, when the operator intends to set the throat 11 of the patient, he first takes out the product from the fluted box, because the shape of the tube 23 is limited for a long time, when the tube 23 is held by hand to be placed into the throat in the forward direction, the tube 23 is still in the initial state and the opening 21 faces to the left side, during the introduction process, the fixing portion 23b has a certain strength to maintain the introduction direction of the tube 23, the cover structure D can directly pass through the epiglottis 13 in the middle of the throat 11, when reaching the positioning, the tube 23 will contact the temperature at the throat 11, the temperature is enough to slowly release the initial state to be normal, and the opening direction of the opening 21 will be displaced to the middle position relative to the tube 23 by the squeezing of the muscles around the throat 11, and seizes the epiglottis 13 to complete the installation process, and in addition, the periphery of the overlapped part C is overlapped by elastic material in a reverse folding manner, which can generate a softer deformation property and provide a more comfortable touch feeling for the patient 10.

In addition, the telescopic sleeve body 30 has high ductility and is accompanied by a large deformation amount, the cover body structure D can be minimized, when the positioning operation is carried out in the mode, the expected psychological pressure of an operator to avoid the injury of the patient 10 can be reduced, the use threshold of the operator can also be reduced, the implementation can be completed without requiring a technician with high professional quality to operate, the operation process needs to employ an anesthesiologist to operate in a medical institution due to high professional medical means, in the using process, the contact area between the product and the throat 11 can be increased to prevent slippage and falling, the flexibility can also improve the convenience of the installation of the operator, the learning time of training personnel is reduced, and the failure rate of installation is reduced.

Please refer to fig. 8 ~ fig. 10, fig. 7 is an external view of the mouthpiece, fig. 8 is an operation view of the mouthpiece, fig. 9 is a view of the mouthpiece being installed on the tube, after the cover structure is installed , a mouthpiece 60 can be installed on the outer side of the tube 23, the shape of the mouthpiece is a tubular structure with deformation recovery property, a slit 61 capable of separating the mouthpiece 60 is installed on one side of the mouthpiece 60, the operator can directly and manually pull the slit 61 from the middle to both sides to directly insert into the tube 23, and the front end of the mouthpiece 60 is clamped between the annular bending portions 23c, since the tube 23 and the mouthpiece 60 are configured in a non-coupling manner, that is, when the tube 23 is rotated, the placement position of the mouthpiece 60 is not affected.

Referring to fig. 10 ~ and fig. 13, fig. 10 is a schematic sectional view of a mouthpiece installed at the mouth of a human body, fig. 12 is a schematic sectional view (one) of a mouthpiece for assisting the installation of a laryngeal mask, fig. 13 is a schematic sectional view (two) of a mouthpiece for assisting the installation of a laryngeal mask, before the laryngeal mask is installed, the mouthpiece 60 can be installed outside the tube 23 first, in this embodiment, since the slit 61 is designed to have a -tooth shape, the slit 61 is in a sealed state, the upper and lower rows of teeth of the patient 10 are less prone to generating movements of the mouthpiece 60 and cannot affect the outside of the tube 23, thereby ensuring that the intake flow of the tube 23 is not affected by the occlusion of the patient 10, in addition, the mouthpiece 60 is close to one end of the mask structure D, during the installation, since the front end of the mouthpiece 60 is abutted against the central portion of the tube 23, the operator pushes the tube 23 towards the interior of the throat 11 to restrict the space, the central portion of the tube 23 directly generates a restriction of the throat space, and the throat space is more prone to generate a bending and the throat space is prevented from being pressed and the throat space b is more prone to be bent and the throat area of the tube 23 is more prone to be bent and the throat area of the throat.

Referring to figure 14, figure 14 is a front cross-sectional view of the inflatable-like bladder embodiment of the folding laryngeal mask structure of figure 2. In this embodiment, when the cover body structure D reaches the throat 11 for positioning, the air can be introduced into the one-way tube 50 to adjust the air pressure of the airbag a, at this time, the airbag a is limited by the backrest 22 to expand in a half-egg shape and lean against one side of the inner wall of the throat 11, the cover body structure D is fixed at the throat 11, the whole airbag a disposed outside the backrest 22 can be more closely attached to the mucous membrane of the larynx by matching the viscosity of the bellows 30, and the adjustment can be properly performed according to the space of the throat 11 of the patient 10 to increase the success rate of disposing the laryngeal mask, in addition, due to the material design of the bellows 30, the air pressure generated by introducing a small amount of air can still maintain the tension to keep a certain volume, and at the same time, the function of preventing air leakage is provided, after inflation, the pressing pressure on the side wall of the throat 11 can be set between 10cm-H2O and 25cm-H2O, and an air pressure serving as the preset pressure value is selected, so that a stable effect can be achieved, and an excessive negative cannot be caused on the throat 11; more specifically, the gas pressure of the airbag can generate a preset pressure value after the gas is injected into the airbag, and the material formula of the bellows can be designed to select a preferred value from the range of 10cm-H2O to 25cm-H2O as the preset pressure value, in the embodiment, the preset pressure value is 15 cm-H2O, and after the selection, the preset pressure value can be kept constant when the airbag injects 2ml to 100ml of gas. .

Referring to fig. 15, fig. 15 is a front sectional view of the hybrid laryngeal mask structure of fig. 2 in an implementation of the open elastic region. When the patient is in a positive pressure breathing state, if the patient is instantaneously in the airbag A with the peak pressure value of the through hole 22a, the gas automatically enters the open elastic area B through the through holes 22a and expands outwards, and meanwhile, the airbag A is squeezed to lift the internal gas pressure and slightly move outwards, so that the overlapping area C can be attached to the mucous membrane of the wall of the throat 11, the mask body structure D can be fixed and can avoid air leakage, and the whole mask body structure D can be further fixed, in addition, because the gas pressure entering the open elastic area B is equivalent to the shearing stress generated by the breathing air fluid, the influence on the throat 11 of the human body is small, and the human body breathing is -period movement with amplitude change of the air inflow, therefore, the airbag A can slightly press the side wall of the throat in a reciprocating manner similar to a massage manner in the breathing process of the patient, can make the blood circulation of throat department smooth more, more can prolong the use time limit that the laryngeal mask put into the human body, can relax the 10 postoperative throat pain's of this patient's thing, prevent injury larynx mucosa simultaneously, at this moment, also can carry out moderate degree according to the stability that the laryngeal mask covered with this type of gas cell A and adjust the gassing, reduce this cover body structure D and apply in the pressure of patient's throat 11 department, borrow this, most laryngeal mask is solved about the pharyngalgia that excessively aerify and cause more to the mode of aspect more, and the safety of careless gas leakage is doubtful.

To sum up, the design of the invention is a folding laryngeal mask structure which can be manually inflated and fixed and can utilize positive breathing pressure of patients to avoid air leakage, and mainly utilizes the size of a similar inflatable bag A which can manually adjust air pressure to preliminarily fix the mask structure D at the position of the throat 11 so as to meet the requirements of the throat 11 space of patients 10 with different weights; in addition, by utilizing the airflow pressure generated during positive pressure breathing of the throat 11, the open elastic zone B which can be automatically adjusted in a fine mode by utilizing the pressure is designed, and the softness generated by the structure of the overlapped part C is matched, when the laryngeal mask is placed into the throat 11 for positioning, the overlapped part C not only can completely cover the respiratory tract of the patient 10, but also can reduce the discomfort of different object pressing, so that the comfortable touch feeling of the patient 10 is provided, and the purpose of preventing air leakage is achieved by adopting the fine adjustment mode, the use time of the laryngeal mask for placing a human body can be prolonged, the pain of most throats 11 after the patient 10 is placed in a post-operation can be relieved, and the mucosa of the larynx can be prevented from being injured, so that various problems encountered by the conventional beds can be solved, and the invention has the economic value of the application of the high-grade bed, and is extremely in line with commercial utilization.

The above-mentioned embodiments are merely illustrative of the present invention, and are not intended to limit the scope of the present invention, and various modifications and changes may be made without departing from the spirit of the present invention.

Claims

1. A foldable laryngeal mask structure for placement in the throat of a patient to clear the airway, comprising:

a supporting piece, one side of which is an opening part and the other side is a backrest part, and a pipe body is formed by extending one side of the backrest part outwards, a groove part is arranged around the opening part, and the pipe body and the opening part can be mutually communicated;

a telescopic sleeve body which is provided with a first sleeve barrel part, a second sleeve barrel part connected with the first sleeve barrel part and a restriction part, wherein the edge of the first sleeve barrel part can be fixedly arranged in the groove part, and a similar inflatable bag which can be arranged at one side of the backrest part is formed between the first sleeve barrel part and the second sleeve barrel part in a reverse folding mode, and the restriction part is fixedly sleeved between the supporting part and the pipe body, wherein the telescopic sleeve body has high ductility and viscosity and can be used for expanding tension when inflating; and

one end of the one-way pipe is arranged on the inflatable bag, the other end of the one-way pipe is arranged on one side of the pipe body, and gas can be injected from one end of the one-way pipe in a single direction to expand the inflatable bag.

2. The foldable laryngeal mask structure of claim 1, wherein the elastic sleeve body reversely folds the second sleeve portion attached to one side of the first sleeve portion to form the inflatable bag with the constricting portion as a pivot.

3. A folding laryngeal mask structure according to claim 2, wherein the inflatable bladder is folded back about an edge of the second sleeve portion so that the inflatable bladder can be positioned on one side of the back portion.

4. The folding laryngeal mask structure of claim 1, further comprising a bundle of pieces that secure the cuff between the support and the tube.

5. The folding laryngeal mask structure of claim 1, wherein the first sleeve portion is longer than the second sleeve portion.

6. The folding laryngeal mask structure of claim 1, wherein the first sleeve portion and the second sleeve portion are folded in opposite directions to form an open elastic zone that can be disposed on one side of the back portion, and the back portion is provided with at least one through hole.

7. The foldable laryngeal mask structure of claim 1, wherein a fastening portion is disposed on one side of the tube, and a plurality of annular bending portions are protruded on the other side of the tube.

8. The foldable laryngeal mask structure of claim 1, wherein the tube is made of a material that is deformable and resilient, and is configured to be bent to assume an initial state before being disposed in the throat of the patient, wherein an opening of the opening is relatively biased to at least one of the left side and the right side of the tube.

9. The foldable laryngeal mask structure of claim 8, wherein the initial state is slowly released after the outside of the tube contacts the temperature of the throat, and the opening direction of the opening is deformed and displaced to an intermediate position relative to the tube.

10. The foldable laryngeal mask structure of claim 1, wherein a mouthpiece is disposed outside the tube, and a slit is disposed on one side of the tube for separating the mouthpiece, the tube can be directly inserted into the tube by pulling the slit to both sides, and one end of the mouthpiece is fixed outside the tube.

11. The foldable laryngeal mask structure of claim 1, wherein after the inflation of the inflatable bladder, the pressure of the gas in the inflatable bladder generates a predetermined pressure value, and one of the predetermined pressure values is selected from the range of 10cm-H2O to 25cm-H2O, and after the selection, when the inflatable bladder is inflated with 2ml to 100ml of gas, the predetermined pressure value is kept constant.