Anti-backflow double-cavity laryngeal mask for endoscope

Abstract

The invention discloses an anti-reflux double-cavity laryngeal mask for an endoscope, which relates to the technical field of laryngeal mask devices and comprises a biting structure and a fixing structure. The biting structure comprises a positioning part and an opening part, and the opening part is connected with the positioning part and moves into the oral cavity of the patient along the tube body of the main tube so as to maintain the opening of the oral cavity of the patient; the fixing structure comprises a clamping part and an adjusting part, the adjusting part comprises an angle adjusting unit and an elastic force adjusting unit, the angle adjusting unit is connected with the clamping part and is bent at an angle, and the biting structure is connected with a patient through the arrangement of the biting structure and the fixing structure so as to determine the position of the laryngeal mask; the stability of the laryngeal mask is further determined through the tension generated by the elastic force adjusting unit, meanwhile, the elastic force adjusting unit is balanced through the action force of the biting structure and the cheeks of the patient by the angle adjusting unit, and the center deviation caused by the change of the head angle of the patient is balanced through the action force of the biting structure and the cheeks of the patient. And the main body pipe is prevented from deviating.

Description

Technical Field

[0001] The invention relates to the field of laryngeal mask devices, in particular to an endoscopic anti-reflux double-lumen laryngeal mask. Background Art

[0002] The laryngeal mask is a medical device used to keep the patient's airway open during surgery or other medical procedures. With the development of medical technology, the laryngeal mask has also undergone multiple generations of updates and improvements. The current laryngeal mask technology has developed to the third generation, the airway-esophageal double-tube laryngeal mask, also known as the double-chamber laryngeal mask, which has a double-catheter design, one catheter for ventilation, and the other catheter can be used to insert a gastric tube for drainage to prevent reflux and aspiration of gastric contents. The advantage of this generation of laryngeal mask is that it can provide safer airway management while reducing the risk of complications.

[0003] In summary, with the advancement of technology, the design of laryngeal masks has been continuously optimized, from the simple design of the first generation to the intubation-type laryngeal mask of the second generation, and then to the double-tube laryngeal mask of the third generation. Each generation of updates is to provide a safer and more effective airway management solution. The third generation of laryngeal masks is currently the mainstream in the market, which combines the advantages of the first two generations of products and provides higher safety and a wider range of application scenarios.

[0004] A Chinese patent with authorization announcement number CN214965339U discloses a laryngeal mask specifically for bronchoscopic diagnosis and treatment, comprising a ventilation hood, an intubation main tube, an inflation tube, an anti-bite device, an indicator balloon and a machine connector, wherein one end of the intubation main tube is connected to the ventilation hood, and the other end of the intubation main tube is connected to the machine connector, the air inlet of the ventilation hood is connected to the indicator balloon through the inflation tube, and the anti-bite device is arranged on the intubation main tube. The utility model is provided with an anti-bite device on the intubation main tube, which can, on the one hand, effectively protect the bronchoscope, and on the other hand, can realize movement relative to the bronchoscope, thereby facilitating medical personnel to operate the patient to wear it.

[0005] Currently, there are first-generation, second-generation, and third-generation laryngeal masks. The third-generation laryngeal mask is designed with double airbags, ventilation tubes, and drainage tubes, so it has good sealing properties and can prevent gastric bloating and reflux aspiration. During use, doctors will use it with a mouthpiece and tape. The mouthpiece can prevent the tongue from falling back and blocking the airway, and is also used to prevent patients from damaging the bronchoscope, but it cannot guarantee the stability of the main tube. At the same time, in order to solve the problem of the main tube and the bite device falling off during endoscopic surgery, tape is provided to stabilize the position of the main tube, but the tape is prone to cause skin allergies, and when the patient sweats, the tape is easy to fall off from the skin surface; if the tape is fixed around the head, the tape will stabilize the main tube while also easily giving the main tube a certain amount of pressure, and this pressure will cause the main tube to shift in position, or when the patient's head swings, this shift will be more obvious.

[0006] To this end, the present invention proposes an endoscopic anti-reflux double-lumen laryngeal mask to solve the above-mentioned problem. Summary of the invention

[0007] In view of the above problems in the prior art, the present invention is proposed.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: an endoscopic anti-reflux double-lumen laryngeal mask, comprising:

[0009] A main body tube, in which an adapter, a stomach tube and a visual scope are inserted, and a cavity for accommodating the adapter, the stomach tube and the visual scope is opened inside the main body tube;

[0010] The bite structure includes a positioning part and an opening part, wherein the positioning part is sleeved on the proximal end of the main body tube, and the opening part is connected to the positioning part and is adapted to the tube body of the main body tube, and moves along the tube body of the main body tube into the patient's oral cavity to keep the patient's mouth open;

[0011] The fixing structure includes a clamping part and an adjusting part, wherein the clamping part moves on the surface of the positioning part and presses the connecting part between the positioning part and the opening part, wherein the adjusting part includes an angle adjusting unit and an elastic force adjusting unit, wherein the angle adjusting unit is connected to the clamping part and is bent at an angle and pressed on the part of the opening part extending out of the cavity, wherein the elastic force adjusting unit is connected to the clamping part through the angle adjusting unit, and the position of the clamping part is adjusted and positioned by pulling the elastic force adjusting unit.

[0012] As a preferred solution of the endoscopic anti-reflux double-lumen laryngeal mask of the present invention, the positioning portion includes a sleeve, a surface of the sleeve is provided with a through groove for the adapter, a gastric tube and a visual scope to pass through, and a long circular through groove is provided on the side wall of the sleeve.

[0013] As a preferred embodiment of the endoscopic anti-reflux double-chamber laryngeal mask of the present invention, the opening portion includes a bite tube and an edge strip, the edge strip is fixed to the top of the bite tube and has an application plate extending from both sides, the application plate is squeezed by the angle adjustment unit and deformed by fitting against the cheek, the application plate is double-layered, the top layer of the application plate is composed of a plastic plate and is rough on both sides, and the bottom layer of the application plate is composed of sponge.

[0014] As a preferred solution of the endoscopic anti-reflux double-chamber laryngeal mask of the present invention, the opening portion also includes a flexible rope, which extends from the surface of the edge strip and passes through the long round groove on the surface of the positioning portion, and an anchor is fixed to the exposed end of the flexible rope. The clamping portion moves along the surface of the positioning portion and applies pressure to the flexible rope, and the positioning between the clamping portion and the positioning portion is achieved by the pressure between the clamping portion, the positioning portion and the flexible rope.

[0015] As a preferred solution of the endoscopic anti-reflux double-lumen laryngeal mask of the present invention, the clamping portion includes an outer sleeve ring, and a special-shaped groove is opened on the surface of the outer sleeve ring, a matching special-shaped plate is inserted into the inside of the special-shaped groove, and the special-shaped plate is inserted into the special-shaped groove and tightly attached to the sleeve.

[0016] As a preferred solution of the endoscopic anti-reflux double-chamber laryngeal mask of the present invention, there is a surrounding edge extending outward from the bottom end of the outer sleeve ring, and the angle adjustment unit includes a connecting block, an angle plate and a connecting piece, and the angle plate is fixed to the bottom end of the surrounding edge through the connecting block.

[0017] As a preferred solution of the endoscopic anti-reflux double-chamber laryngeal mask described in the present invention, wherein: the angle plate includes a first angle plate, a second angle plate, a third angle plate and a fourth angle plate, the first angle plate and the connecting block are fixed by a connecting piece, the first angle plate and the second angle plate are folded and fixed at different angles by a connecting piece so that the third angle plate is against the rough surface of the application plate, the angle between the second angle plate and the third angle plate is adjusted by the squeezing of the application plate, and the elastic force adjustment unit is connected to the tail end of the fourth angle plate.

[0018] As a preferred embodiment of the endoscopic anti-reflux double-lumen laryngeal mask of the present invention, the elastic force adjustment unit includes an elastic rope and a Velcro, and the elastic rope is stretched so that the hairy surface and the sticky surface of the Velcro are adhered and then sleeved on the patient's head, and the fourth angle plate is stretched by the elastic rope to adjust the angle between the third angle plate and the fourth angle plate.

[0019] As a preferred solution of the endoscopic anti-reflux double-chamber laryngeal mask of the present invention, the connecting member includes a connecting roller and a synchronization rod for driving the connecting roller to rotate synchronously, a trapezoidal circular groove is provided inside the connecting roller, and a wedge-shaped block is clamped inside the trapezoidal circular groove;

[0020] The wedge block slides in the trapezoidal circular groove to adjust and fix the angle between the first angle plate and the second angle plate.

[0021] As a preferred solution of the endoscopic anti-reflux double-chamber laryngeal mask described in the present invention, the wedge-shaped block includes a trapezoidal circular roller adapted to the trapezoidal circular groove, a rectangular clamping plate extends from one end of the trapezoidal circular roller passing through the connecting roller, and a group of nylon ropes extend from the center of the trapezoidal circular roller.

[0022] Beneficial effects of the present invention: The present invention connects the bite structure to the patient by setting a bite structure and a fixing structure, and uses the upward force and friction force generated by the skin of the patient's face to stabilize the main tube to determine the position of the laryngeal mask. It can be quickly operated for emergency situations where an airway needs to be quickly and effectively established. The fixing device includes a clamping part, an angle adjustment unit, and an elastic force adjustment unit. The tension generated by the elastic force adjustment unit is used to further determine the stability of the laryngeal mask. At the same time, the angle adjustment unit uses the force of the bite structure and the patient's cheek to balance the elastic force adjustment unit to avoid the problem of excessive insertion depth of the main tube caused by the elastic force adjustment unit acting on the main tube, causing damage to the patient's throat. At the same time, the bite structure and the patient's cheek are used to balance the center offset caused by the change in the angle of the patient's head, which causes the main tube offset problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 Schematic diagram of the overall structure of the laryngeal mask in the present invention;

[0025] Figure 2 It is a schematic diagram of the connection between the holding structure and the fixing structure in the present invention;

[0026] Figure 3 It is a schematic diagram of the overall structure of the opening part in the present invention;

[0027] Figure 4 It is a schematic diagram of the overall structure of the bite structure in the present invention;

[0028] Figure 5 It is a schematic diagram of the overall structure of the fixed structure in the present invention;

[0029] Figure 6 It is a schematic diagram of the overall structure of the connecting piece in the present invention;

[0030] Figure 7 It is a detailed structural diagram of the special-shaped groove in the present invention;

[0031] Figure 8 It is a schematic diagram of the overall structure of the angle plate in the present invention;

[0032] Fig. 9 Schematic diagram of another design structure of the laryngeal mask in the present invention.

[0033] Figure numerals: 100, main tube; 200, inflatable mask; 300, adapter; 400, gastric tube; 500, visual mirror; 600, bite structure; 610, positioning part; 611, sleeve; 612, long round through groove; 613, through groove; 620, opening; 621, bite tube; 622, edge strip; 623, application plate; 624, flexible rope; 625, anchor; 700, fixing structure; 710, clamping part; 711, outer ring; 712, special-shaped groove; 7121, upper groove; 7122, lower groove; 7123, side groove; 713, special-shaped plate ;7131, upper plate;7132, lower plate;7133, side plate;7134, bent plate;714, surrounding edge;720, adjustment part;730, angle adjustment unit;731, connecting block;732, angle plate;7321, first angle plate;7322, second angle plate;7323, third angle plate;7324, fourth angle plate;733, connecting piece;7331, connecting roller;7332, synchronization rod;7333, trapezoidal circular groove;7334, wedge block;7335, traction rope;740, elastic force adjustment unit;741, elastic rope;742, Velcro. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Example 1

[0038] Reference Figure 1-Figure 8 As shown, it is a first embodiment of the present invention, which provides an endoscopic anti-reflux double-lumen laryngeal mask, which includes:

[0039] The main body tube 100 has an adapter 300, a stomach tube 400 and a visual scope 500 inserted therein, and a cavity for accommodating the adapter 300, the stomach tube 400 and the visual scope 500 is provided inside the main body tube 100;

[0040] Specifically, the design is based on the existing multifunctional laryngeal mask II, which includes a main tube 100 and an inflatable mask 200. The inflatable mask 200 is installed at the distal end of the main tube 100. The proximal end of the main tube 100 is plugged with an adapter 300, and a ventilation cavity, an esophageal drainage cavity and a visual cavity are opened in the main tube 100; the main tube 100 is formed according to the natural curvature of the oropharyngeal airway, which is easy to insert and fix the laryngeal mask and reduce airway damage; the esophageal The drainage cavity is located on the right side of the ventilation cavity, and its distal end is streamlined and opens at the tip of the inflatable mask 200, which is connected to the upper end of the esophagus. After the laryngeal mask is placed, the gastric tube 400 is inserted to assist in determining the placement position of the laryngeal mask and to clear the residual liquid in the stomach. The visual cavity is located on the left side of the ventilation cavity, and a visual mirror 500 can be placed therein. The distal end of the visual mirror 500 is a visual window. The visual mirror 500 can monitor the structural characteristics of the throat in real time at the window, and guide the correct operation during the laryngeal mask insertion process to improve the success rate.

[0041] like Figure 2-Figure 4 As shown, the bite structure 600 includes a positioning portion 610 and an opening portion 620. The positioning portion 610 is sleeved on the proximal end of the main tube 100, and the opening portion 620 is connected to the positioning portion 610 and adapted to the tube body of the main tube 100, and moves along the tube body of the main tube 100 into the patient's oral cavity to keep the patient's mouth open. The positioning portion 610 and the opening portion 620 are designed according to the shape of the main tube 100, and the contact area between the main tube 100 and the positioning portion 610 and the opening portion 620 is increased through a relatively tight fitting design, so as to increase the friction between the main tube 100 and the positioning portion 610 and the opening portion 620.

[0042] In order to facilitate intubation by doctors or nurses, the positioning portion 610, the opening portion 620 and the main tube 100 are all made of transparent PVC material; wherein, the positioning portion 610 and the opening portion 620 are of split design, the opening portion 620 is placed in the patient's mouth to maintain the opening angle of the patient's mouth, and at the same time blocks the tongue from falling back to prevent the airway from being blocked by the tongue falling back, the positioning portion 610 is sleeved on the end of the main tube 100, and the opening portion 620 is connected to the positioning portion 610, further preventing the opening portion 620 from being displaced from the surface of the main tube 100, and when pressure is applied to the positioning portion 610 toward the patient's face, the positioning portion 610 relies on the main tube 100 to produce a reaction to achieve its own balance.

[0043] The positioning portion 610 includes a sleeve 611 , a through slot 613 for the adapter 300 , the stomach tube 400 and the viewing scope 500 to pass through is formed on the surface of the sleeve 611 , and an oblong through slot 612 is formed on the side wall of the sleeve 611 .

[0044] Specifically, there are three groups of through grooves 613, which are used for inserting the adapter 300, the gastric tube 400 and the visual scope 500 respectively, and extend upward at the positions of the through grooves 613 on both sides of the sleeve 611 to increase the side walls, so as to increase the contact between the sleeve 611 and the gastric tube 400 and the visual scope 500, and enhance the stability of the gastric tube 400 and the visual scope 500.

[0045] Specifically, the long round through groove 612 is formed by extending from the bottom end of the sleeve 611 to the side wall, and has openings at the bottom end and the side wall of the sleeve 611 .

[0046] Among them, the opening portion 620 includes a bite tube 621 and an edge strip 622, the edge strip 622 is fixed to the top of the bite tube 621 and has an application plate 623 extending on both sides, the application plate 623 is squeezed by the angle adjustment unit 730 and deformed by fitting against the cheek, the application plate 623 is double-layered, the top layer of the application plate 623 is composed of a plastic plate and is rough on both sides, and the bottom layer of the application plate 623 is composed of sponge.

[0047] Specifically, the applicator plate 623 is made of the same material as the main tube 100, that is, transparent PVC material. The applicator plate 623 is squeezed by an external force to adjust the curvature of the applicator plate 623 so that the applicator plate 623 can better fit the patient's cheek.

[0048] Secondly, the plastic design of the application plate 623: the deformation of the plastic plate is transmitted to the bite tube 621 through the edge strip 622, avoiding direct influence on the deformation of the bite tube 621, so as to ensure the sealing between the laryngeal mask and the opening 620 and reduce the possibility of air leakage.

[0049] Flexible design of applicator plate 623: The sponge layer not only increases comfort, but also absorbs excess moisture or sweat, reducing the risk of slipping between applicator plate 623 and the patient's cheek, and also reducing allergies caused by tape adhesion.

[0050] When the position of the application plate 623 is stabilized, it can reversely support the main tube 100 and stabilize the position of the main tube 100.

[0051] The positioning portion 610 plays the dual role of a mouthpiece and an adhesive tape, preventing the tongue from falling back to block the airway, damaging the bronchoscope, and stabilizing the main tube 100. This method can be used for rapid operation in emergency situations where an airway needs to be established quickly and effectively.

[0052] Among them, the opening portion 620 also includes a flexible rope 624, which extends from the surface of the edge strip 622 and passes through the long round groove 612 on the surface of the positioning portion 610. An anchor 625 is fixed to the exposed end of the flexible rope 624. The clamping portion 710 moves along the surface of the positioning portion 610 and applies pressure to the flexible rope 624. The positioning between the clamping portion 710 and the positioning portion 610 is achieved through the pressure between the clamping portion 710, the positioning portion 610 and the flexible rope 624.

[0053] Specifically, in order to further fix the laryngeal mask, the positioning portion 610 is used to pull the positioning portion 610 through external force and then apply pressure to the main tube 100, so that the main tube 100 is further fixed, thereby achieving the purpose of double stability.

[0054] Example 2

[0055] Reference Figures 5 to 8 FIG. 2 is a second embodiment of the present invention, which is based on the previous embodiment, except that the fixing structure 700 includes a clamping portion 710 and an adjusting portion 720, and the clamping portion 710 moves on the surface of the positioning portion 610 and presses the connection portion between the positioning portion 610 and the opening portion 620;

[0056] Specifically, when the distance between the positioning portion 610 and the opening portion 620 is determined, the clamping portion 710 moves on the surface of the positioning portion 610, and the flexible rope 624 exists in the slit between the positioning portion 610 and the clamping portion 710. The extrusion force generated between the flexible rope 624, the positioning portion 610 and the clamping portion 710 is used to fix the position of the flexible rope 624, the positioning portion 610 and the clamping portion 710.

[0057] The clamping part 710 includes an outer ring 711, and a special-shaped groove 712 is formed on the surface of the outer ring 711. A matching special-shaped plate 713 is inserted into the special-shaped groove 712. The special-shaped plate 713 is inserted into the special-shaped groove 712 and is tightly attached to the sleeve 611.

[0058] This design is to prevent the clamping portion 710 from being unstable on the surface of the positioning portion 610, and to prevent the clamping portion 710 from moving and causing the opening portion 620 to move;

[0059] Determine the distance between the positioning portion 610 and the opening portion 620, pass the flexible rope 624 through the inside of the special-shaped groove 712, and press down the special-shaped plate 713 so that the special-shaped plate 713 is inserted into the special-shaped groove 712;

[0060] The special-shaped plate 713 is tightly attached to the sleeve 611, and the clamping force between the special-shaped plate 713 and the sleeve 611 clamps the flexible rope 624. When the special-shaped plate 713 and the sleeve 611 clamp the flexible rope 624, the flexible rope 624 gives a reaction force to the special-shaped plate 713 and the sleeve 611 in the reverse direction, so that the position between the flexible rope 624, the positioning part 610 and the clamping part 710 is stable.

[0061] By pulling up the special-shaped plate 713 and removing it from the special-shaped groove 712, the restriction between the positioning portion 610 and the opening portion 620 can be quickly released, and the distance between the positioning portion 610 and the opening portion 620 can be adjusted. It should be noted that no matter whether the special-shaped plate 713 is pulled up or pushed down, attention should be paid to the stability of the flexible rope 624 to prevent the flexible rope 624 from driving the sleeve 611 to move, causing the main tube 100 to move in the patient's mouth and causing injury to the patient's throat.

[0062] The special-shaped groove 712 includes an upper groove 7121 , a lower groove 7122 and side grooves 7123 provided on both sides of the upper groove 7121 . The side grooves 7123 are communicated with the upper groove 7121 , and the upper groove 7121 is communicated with the lower groove 7122 .

[0063] The special-shaped plate 713 includes an upper plate 7131, a lower plate 7132 and side plates 7133 arranged on both sides of the upper plate 7131, the side plates 7133 are fixed to the upper plate 7131, the upper plate 7131 and the lower plate 7132 are fixed, and a group of bent plates 7134 are extended from the upper plate 7131, and the lower plate 7132 is flush with the inner wall of the outer ring 711, and the upper plate 7131 is lower than the inner wall of the outer ring 711, wherein the bent plates 7134 are convenient for finger detent and pressing.

[0064] Specifically, when the position between the positioning portion 610 and the opening portion 620 is determined, the flexible rope 624 between the positioning portion 610 and the opening portion 620 is held and the clamping portion 710 is moved upward. When the flexible rope 624 encounters upward resistance, the special-shaped plate 713 is pressed downward so that the special-shaped plate 713 is inserted into the special-shaped groove 712. At this time, the extrusion force between the lower plate 7132 and the inner wall of the outer ring 711 causes the position of the flexible rope 624 to be fixed.

[0065] The adjustment portion 720 includes an angle adjustment unit 730 and an elastic force adjustment unit 740. The angle adjustment unit 730 is connected to the clamping portion 710 and is bent at an angle and pressed on the portion of the opening 620 extending out of the oral cavity. The elastic force adjustment unit 740 is connected to the clamping portion 710 through the angle adjustment unit 730, and the position of the clamping portion 710 is adjusted and positioned by pulling the elastic force adjustment unit 740.

[0066] When the angle adjustment unit 730 is bent at a certain angle, it is pressed against the rough surface of the application plate 623 to prevent the angle adjustment unit 730 from moving relative to the application plate 623. If the rough surface of the application plate 623 does not provide enough friction to the angle adjustment unit 730, a sponge layer may be added according to actual conditions to increase the friction between the application plate 623 and the angle adjustment unit 730.

[0067] A peripheral edge 714 is extended from the bottom end of the outer ring 711 to the periphery, and the angle adjustment unit 730 includes a connecting block 731 , an angle plate 732 and a connecting member 733 . The angle plate 732 is fixed to the bottom end of the peripheral edge 714 through the connecting block 731 .

[0068] Specifically, the angle plate 732 includes a first angle plate 7321, a second angle plate 7322, a third angle plate 7323 and a fourth angle plate 7324. The first angle plate 7321 and the connecting block 731 are fixed by a connecting piece 733. The first angle plate 7321 and the second angle plate 7322 are folded and fixed at different angles by the connecting piece 733 so that the third angle plate 7323 is against the rough surface of the application plate 623. The angle between the second angle plate 7322 and the third angle plate 7323 is adjusted by the squeezing of the application plate 623, and the elastic force adjustment unit 740 is connected to the tail end of the fourth angle plate 7324.

[0069] Specifically, the elastic force adjustment unit 740 includes an elastic rope 741 and a Velcro 742. The elastic rope 741 is stretched so that the hairy surface and the sticky surface of the Velcro 742 adhere to each other and then are sleeved on the patient's head. The fourth angle plate 7324 is stretched by the elastic rope 741 to adjust the angle between the third angle plate 7323 and the fourth angle plate 7324.

[0070] There are two groups of angle adjustment units 730 and two groups of elastic adjustment units 740, one group of angle adjustment units 730 corresponds to one group of elastic adjustment units 740, the two groups of angle adjustment units 730 and the two groups of elastic adjustment units 740 are symmetrically arranged on both sides of the surrounding edge 714, and the Velcro 742 includes a furry surface and a sticky surface, wherein the furry surface of the Velcro 742 is connected to the tail end of the angle adjustment unit 730 through an elastic rope 741, and the sticky surface of the Velcro 742 is connected to the tail end of the other group of angle adjustment units 730 through the elastic rope 741. The furry surface and the sticky surface of the Velcro 742 are bonded together, so that the two groups of angle adjustment units 730, the two groups of elastic adjustment units 740 and the clamping part 710 form a circular ring that is sleeved on the patient's head.

[0071] The connecting member 733 includes a connecting roller 7331 and a synchronous rod 7332 for driving the connecting roller 7331 to rotate synchronously. A trapezoidal circular groove 7333 is provided inside the connecting roller 7331, and a wedge block 7334 is engaged inside the trapezoidal circular groove 7333.

[0072] A traction rope 7335 extends from the center of the wedge block 7334 , and the traction rope 7335 pulls the wedge block 7334 to slide in the trapezoidal circular groove 7333 .

[0073] The wedge block 7334 slides in the trapezoidal circular groove 7333 to adjust and fix the angle between the first angle plate 7321 and the second angle plate 7322 .

[0074] The wedge block 7334 includes a trapezoidal roller matched with the trapezoidal groove 7333, a rectangular clamping plate extends from one end of the trapezoidal roller passing through the connecting roller 7331, and a group of nylon ropes extends from the center of the trapezoidal roller.

[0075] Reference Figure 6 and Figure 8 The connecting block 731 is fixed to the bottom end of the surrounding edge 714, and the first angle plate 7321 is connected to the end of the connecting block 731 away from the surrounding edge 714, wherein the connecting block 731, the connecting member 733 and the first angle plate 7321 are fixedly connected, and the angle between the first angle plate 7321 and the connecting block 731 is fixed.

[0076] The first angle plate 7321 and the second angle plate 7322 are connected by a connecting roller 7331. The first angle plate 7321 and the second angle plate 7322 are bent at different angles by the connecting roller 7331. However, a trapezoidal circular groove 7333 is provided in the connecting roller 7331, and a matching wedge block 7334 is inserted in the trapezoidal circular groove 7333. By moving the wedge block 7334, the angle between the first angle plate 7321 and the second angle plate 7322 can be adjusted arbitrarily or in two states: unadjustable;

[0077] According to the distance between the opening portion 620 and the positioning portion 610, the first angle plate 7321 and the second angle plate 7322 are bent so that the end of the third angle plate 7323 rests on the rough surface of the application plate 623. At the same time, the tension of the elastic adjustment unit 740 is used to give the clamping portion 710 a downward pulling force, so that the entire laryngeal mask is stabilized according to the facial compression and head tension.

[0078] The purpose of such a design is that, when a downward pulling force is applied to the clamping portion 710, the downward pressure will act on the positioning portion 610 and then on the main tube 100, so that the main tube 100 has a force to penetrate into the throat. This force will cause the position of the laryngeal mask to shift, and at the same time, the laryngeal mask will cause discomfort or more severe discomfort to the patient.

[0079] The device resists this downward pressure by using a first angle plate 7321 and a second angle plate 7322 bent at a certain angle, so that the position distance between the opening portion 620 and the positioning portion 610 is difficult to change, and at the same time transmits this downward pressure to the patient's cheek, further improving the connection stability between the opening portion 620 and the main tube 100.

[0080] It should be noted that, in this device, considering that the basis of this design is a multifunctional laryngeal mask II, the bending design of the main tube 100 of the multifunctional laryngeal mask II has played a preliminary stabilizing role, so the tension of the elastic adjustment unit 740 provided in this device is relatively small, and its purpose is to stabilize the main tube 100. At the same time, considering that the laryngeal mask is a disposable product, the design should not be too complicated according to cost considerations. If a large tension of the elastic adjustment unit 740 is required, it can be referred to Fig. 9 As shown: the angle adjustment unit 730 and the elastic force adjustment unit 740 can be directly connected to the side wall of the clamping portion 710, and several relatively narrow bite tubes 621 can be sleeved to meet the distance requirement between the opening portion 620 and the positioning portion 610.

[0081] Working principle: First, the positioning part 610 and the opening part 620 are sleeved on the surface of the main tube 100, and the laryngeal mask is inserted into the patient's mouth. The opening part 620 is moved along the tube body of the main tube 100, so that the bite tube 621 is placed in the patient's mouth, the edge strip 622 presses the patient's lips, and the application plate 623 fits the patient's cheek. The distance between the opening part 620 and the positioning part 610 is determined;

[0082] The opening 620 holds the main tube 100 and achieves preliminary stability of the main tube 100 through friction between the application plate 623 and the patient's cheek;

[0083] Hold the flexible rope 624 between the positioning portion 610 and the opening portion 620 and straighten the flexible rope 624, and move the clamping portion 710. When the flexible rope 624 encounters upward resistance, the special-shaped plate 713 is pressed downward so that the special-shaped plate 713 is inserted into the special-shaped groove 712. At this time, the squeezing force between the lower plate 7132 and the inner wall of the outer ring 711 causes the position of the flexible rope 624 to be fixed, and the flexible rope 624 retreats a small distance due to the downward pressing action of the lower plate 7132.

[0084] According to the distance between the opening portion 620 and the positioning portion 610, the first angle plate 7321 and the second angle plate 7322 are bent so that the end of the third angle plate 7323 is against the rough surface of the application plate 623. The first angle plate 7321 and the second angle plate 7322 exert the force generated by squeezing the application plate 623 on the clamping portion 710 and the positioning portion 610 in the opposite direction, so that the clamping portion 710 and the main tube 100 have a tendency to move away from the patient's cheek, and at the same time, the flexible rope 624 is restored to a straight state;

[0085] In order to balance the force generated by the movement of the clamping portion 710 and the main tube 100 away from the patient's cheek, an elastic adjustment unit 740 is stretched on the angle adjustment unit 730. The clamping portion 710 and the main tube 100 are flattened by the force generated by being sleeved on the patient's brain, so that the position of the laryngeal mask is stable.

[0086] Among them, the application plate 623 is symmetrically fitted to the affected cheek and squeezed, and at the same time, the squeezing force of the first angle plate 7321 and the second angle plate 7322 and the pulling force of the elastic adjustment unit 740 are utilized to firmly fix the laryngeal mask on the patient's face. When the patient's head is deflected and the center of the laryngeal mask and the fixing structure 700 is offset, the design of the application plate 623 can well resist such offset force to ensure the stability of the laryngeal mask.

[0087] Among them, the elastic force adjustment unit 740 can be a sleeve type, stretched by elastic force, or a thin rope type, or an ear-hanging type, and different shapes can be designed according to needs.

[0088] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An endoscopic anti-reflux double-lumen laryngeal mask, characterized in that: include: A main body tube (100) is inserted with an adapter (300), a stomach tube (400) and a visual scope (500), and a cavity for accommodating the adapter (300), the stomach tube (400) and the visual scope (500) is provided inside the main body tube (100); The bite structure (600) comprises a positioning portion (610) and an opening portion (620), wherein the positioning portion (610) is sleeved on the proximal end of the main tube (100), and the opening portion (620) is connected to the positioning portion (610) and is adapted to the tube body of the main tube (100), and moves along the tube body of the main tube (100) into the patient's oral cavity to keep the patient's mouth open; A fixing structure (700) includes a clamping portion (710) and an adjusting portion (720), wherein the clamping portion (710) moves on the surface of the positioning portion (610) and presses the connecting portion between the positioning portion (610) and the opening portion (620), wherein the adjusting portion (720) includes an angle adjusting unit (730) and an elastic force adjusting unit (740), wherein the angle adjusting unit (730) is connected to the clamping portion (710) and is bent at an angle and is pressed against the portion of the opening portion (620) extending out of the oral cavity, wherein the elastic force adjusting unit (740) is connected to the clamping portion (710) via the angle adjusting unit (730), and the position of the clamping portion (710) is adjusted and positioned by pulling the elastic force adjusting unit (740).

2. The endoscopic anti-reflux double-lumen laryngeal mask according to claim 1, characterized in that: The positioning portion (610) includes a sleeve (611), the surface of which is provided with a through groove (613) for the adapter (300), the stomach tube (400) and the visual scope (500) to pass through, and an oblong through groove (612) is provided on the side wall of the sleeve (611).

3. The endoscopic anti-reflux double-lumen laryngeal mask according to claim 2, characterized in that: The opening portion (620) includes a bite tube (621) and an edge strip (622), wherein the edge strip (622) is fixed to the top end of the bite tube (621) and has an application plate (623) extending from both sides, wherein the application plate (623) is squeezed by the angle adjustment unit (730) and deformed by fitting against the cheek, wherein the application plate (623) is double-layered, wherein the top layer of the application plate (623) is made of a plastic plate and is rough on both sides, and the bottom layer of the application plate (623) is made of sponge.

4. The endoscopic anti-reflux double-lumen laryngeal mask according to claim 3, characterized in that: The opening portion (620) further comprises a flexible rope (624), which extends from the surface of the edge strip (622) and passes through the long round groove (612) on the surface of the positioning portion (610); an anchor (625) is fixed to the exposed end of the flexible rope (624); the clamping portion (710) moves along the surface of the positioning portion (610) and applies pressure to the flexible rope (624); and the positioning between the clamping portion (710) and the positioning portion (610) is achieved through the pressure between the clamping portion (710), the positioning portion (610) and the flexible rope (624).

5. The endoscopic anti-reflux double-lumen laryngeal mask according to claim 4, characterized in that: The clamping portion (710) includes an outer ring (711), and a special-shaped groove (712) is formed on the surface of the outer ring (711). A matching special-shaped plate (713) is inserted into the special-shaped groove (712). The special-shaped plate (713) is inserted into the special-shaped groove (712) and is tightly attached to the sleeve (611).

6. The endoscopic anti-reflux double-lumen laryngeal mask according to claim 5, characterized in that: A peripheral edge (714) is extended outward from the bottom end of the outer sleeve (711), and the angle adjustment unit (730) comprises a connecting block (731), an angle plate (732) and a connecting member (733), wherein the angle plate (732) is fixed to the bottom end of the peripheral edge (714) via the connecting block (731).

7. The endoscopic anti-reflux double-lumen laryngeal mask according to claim 6, characterized in that: The angle plate (732) includes a first angle plate (7321), a second angle plate (7322), a third angle plate (7323) and a fourth angle plate (7324); the first angle plate (7321) and the connecting block (731) are fixed by a connecting piece (733); the first angle plate (7321) and the second angle plate (7322) are folded and fixed at different angles by a connecting piece (733) so that the third angle plate (7323) is against the rough surface of the application plate (623); the angle between the second angle plate (7322) and the third angle plate (7323) is adjusted by the squeezing of the application plate (623); and the elastic force adjustment unit (740) is connected to the tail end of the fourth angle plate (7324).

8. The endoscopic anti-reflux double-lumen laryngeal mask according to claim 7, characterized in that: The elastic force adjustment unit (740) comprises an elastic rope (741) and a Velcro (742), and the elastic rope (741) is stretched so that the fleece side and the sticky side of the Velcro (742) adhere to each other and are then sleeved on the patient's head. The fourth angle plate (7324) is stretched by the elastic rope (741) to adjust the angle between the third angle plate (7323) and the fourth angle plate (7324).

9. The endoscopic anti-reflux double-lumen laryngeal mask according to claim 8, characterized in that: The connecting member (733) comprises a connecting roller (7331) and a synchronous rod (7332) for driving the connecting roller (7331) to rotate synchronously, a trapezoidal circular groove (7333) is provided inside the connecting roller (7331), and a wedge block (7334) is engaged inside the trapezoidal circular groove (7333); The wedge block (7334) slides in the trapezoidal circular groove (7333) to adjust and fix the angle between the first angle plate (7321) and the second angle plate (7322).

10. The endoscopic anti-reflux double-lumen laryngeal mask according to claim 9, characterized in that: The wedge block (7334) includes a trapezoidal circular roller adapted to the trapezoidal circular groove (7333), a rectangular clamping plate extending from one end of the trapezoidal circular roller passing through the connecting roller (7331), and a group of nylon ropes extending from the center of the trapezoidal circular roller.

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