CN111514421B - Laryngeal mask airway and video device - Google Patents

Abstract

The embodiment of the present application provides a laryngeal mask and a video device thereof, the video device comprising a shell, a light source assembly, a display and a video tube, a light source cavity is formed in the shell, a light emitting port for docking with the light guide of the laryngeal mask is formed on the shell, the light emitting port is communicated with the light source cavity, and the light emitting port is exposed on the outer surface of the shell; the light source assembly is arranged in the light source cavity, and the visible light emitted by the light source assembly is emitted through the light emitting port; the proximal end of the video tube is connected to the shell; the display is mounted on the shell, and the video tube is electrically connected to the display. In the video device of the embodiment of the present application, the current in the light source assembly will not enter the laryngeal mask body, which can improve the safety performance of the laryngeal mask; the video device has a simple structure, and the video tube and the display do not need to be reassembled and connected during the use of the laryngeal mask, which is convenient and quick to use, and the video device is reusable.

Description

Laryngeal mask airway and video device

Technical Field

The present application relates to the technical field of medical devices, and in particular to a laryngeal mask and a video device thereof.

Background technique

As a supraglottic ventilation device, the laryngeal mask is an artificial airway. Since its invention in 1983, it has been widely used in clinical practice due to its advantages such as easy operation, high success rate and little damage. The laryngeal mask is an artificial airway device between a mask and an endotracheal tube, which can allow patients to maintain spontaneous breathing and implement positive pressure ventilation.

Laryngeal masks without visualization functions are usually blindly inserted into the patient's body. Since the details of the throat cannot be seen during the operation, the operator can only blindly insert the mask based on feel and experience. Blind insertion is likely to lead to inaccurate placement of the laryngeal mask. Inaccurate position may lead to a series of subsequent problems, such as failure to effectively isolate the respiratory tract and digestive tract, resulting in incomplete sealing of the laryngeal mask, air leakage, bloating, reflux, and even aspiration of the patient; inaccurate position also increases the possibility of movement of the laryngeal mask during surgery. In addition, blind insertion will also increase the chance of selecting an inappropriate laryngeal mask. When one or more of the above problems occur, the operator has to readjust the angle of the laryngeal mask or insert it repeatedly, which may prolong the operation time and delay the rescue of critically ill patients. Multiple attempts to insert the mask may also increase the patient's oral mucus, making the operation more difficult. Furthermore, repeated operations can easily cause damage and bleeding in the patient's pharyngeal cavity, large cardiovascular reactions, and increased surgical risks.

In order to ensure the accuracy of the laryngeal mask insertion position, operators often use various indirect means to check, such as observing chest rise and fall, lung compliance, auscultation for leaks, observing neck bulge, monitoring PetCO2 (end-tidal carbon dioxide partial pressure), mouth opening observation, etc., but in actual operation, various indirect inspection methods play an important role, but because of the inherent limitations of the indirect method itself, there is a risk of misjudgment. Therefore, when necessary, direct visual soft endoscope inspection is required. However, there are also some problems with the direct use of visual soft endoscopes. First, the flexible visual endoscope itself is a reusable instrument and is in direct contact with the patient's internal tissues, so it needs to be strictly disinfected, and strict disinfection takes a certain amount of time. There are relatively more disinfection procedures, the disinfection cost will increase relatively, and the anti-immersion performance requirements of the video tube itself are also high. Moreover, during the disinfection period, medical staff have to prepare spare instruments, which objectively increases the cost of use. Even so, there is a certain risk of cross-infection; secondly, the cost of the flexible visual endoscope is relatively high, and it is not a spare instrument that can be obtained at will. For example, there may be a lack of flexible visual endoscopes during some emergency airway treatments or in some primary medical institutions; thirdly, the flexible visual endoscope is mainly used for inspection after laryngeal mask insertion or to guide the endotracheal tube through the laryngeal mask into the glottis, rather than to achieve full visualization during the laryngeal mask insertion process. Therefore, it is difficult to effectively reduce the repeated insertion of the laryngeal mask.

In view of this, it is necessary to realize the visual function of the laryngeal mask itself, and a series of video laryngeal mask designs have emerged.

In the invention patent with publication number CN105050481B and name “Laryngeal mask with retractable rigid tongue and tools for ventilation and intubation”, the battery and lighting system are arranged on the main body of the laryngeal mask. The lighting current is relatively large. Once leakage occurs, it may have a significant impact on the normal use of other surgical instruments, or the electric sparks generated may come into contact with the oxygen leaked during oxygen infusion, resulting in a potential risk of fire, and may pose a major safety hazard to the patient.

Summary of the invention

In view of this, the embodiments of the present application hope to provide a safe laryngeal mask and a video device thereof.

To achieve the above-mentioned purpose, the first aspect of an embodiment of the present application provides a video device of a laryngeal mask, characterized in that it includes a shell, a light source assembly, a video tube, and a display, a light source cavity is formed in the shell, a light emitting port for docking with the light guide of the laryngeal mask is formed on the shell, the light emitting port is communicated with the light source cavity, and the light emitting port is exposed on the outer surface of the shell; the light source assembly is arranged in the light source cavity, and the visible light emitted by the light source assembly is emitted through the light emitting port; the proximal end of the video tube is connected to the shell; the display is installed on the shell, and the video tube is electrically connected to the display.

Furthermore, the light source assembly includes a light source, a reflector and a light cone, wherein the reflector is disposed around the light source to focus the light emitted by the light source to the large end of the light cone, and the small end of the light cone is located at the light emission port.

Furthermore, the reflective cover is formed as a total reflection lens.

Furthermore, a control cavity is formed in the shell, and the video device includes a transmission assembly and an operating handle. The transmission assembly is installed in the control cavity, the proximal end of the video tube extends into the control cavity and is driven and connected to the transmission assembly, the operating handle extends into the control cavity from the outside of the shell and is driven and connected to the transmission assembly, and the operating handle drives the distal end of the video tube to bend and reset through the transmission assembly.

Furthermore, the light source cavity is located at the front side of the control cavity, and the front side of the shell is formed into an inclined structure that gradually shrinks inward from top to bottom.

Furthermore, the display is rotatably mounted on the top of the housing.

A second aspect of an embodiment of the present application provides a laryngeal mask, comprising a laryngeal mask body and a video device of any of the above-mentioned laryngeal masks, wherein the laryngeal mask body comprises a catheter, a sealing seat and a light guide, wherein the sealing seat is connected to the distal end of the catheter, and the proximal end of the catheter is detachably connected to the bottom of the shell; the light guide and the video tube are arranged at intervals from each other, a video cavity and a light guide cavity are formed in the laryngeal mask body, the video tube is pluggable into the video cavity, the light guide is pre-placed in the light guide cavity, and the proximal end of the light guide is connected to the light emitting port to transmit the light from the light emitting port to the distal end of the light guide.

Furthermore, the light guide is formed as a plastic optical fiber.

Furthermore, the video device includes a connecting platform extending laterally outward from both sides of the bottom of the shell, a clamping structure arranged at the bottom of the connecting platform, and a pressing portion arranged on the laterally outer side of the connecting platform; the laryngeal mask body includes a connecting piece formed at the proximal end of the catheter, a clamping slot is formed on the connecting piece, and the pressing portion drives the clamping structure to lock or unlock the clamping slot.

Furthermore, the distal ends of the light guide and the video tube extend into the sealing seat, the distal ends of the light guide and the space in the sealing seat are isolated from each other, and the distal ends of the video tube and the space in the sealing seat are isolated from each other.

Furthermore, the distal end of the video tube can drive the distal end of the light guide to bend and reset synchronously.

In the video device of the embodiment of the present application, the current in the light source assembly will not enter the laryngeal mask body (the shell in the video device will not enter the human body), thereby avoiding electric shock to the human body and improving the safety performance of the laryngeal mask; moreover, the light emitted by the light source assembly will not be incorporated into the video tube, but will be independently transmitted to the light guide, and the structure of the video device is simple; furthermore, the video tube and the display are both connected to the shell, that is, there is no need to reassemble and connect during the use of the laryngeal mask, which is convenient and quick to use, and the video device can be reused.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a laryngeal mask according to an embodiment of the present application;

FIG2 is a schematic structural diagram of a laryngeal mask body according to an embodiment of the present application;

FIG3 is a schematic structural diagram of a video device according to an embodiment of the present application;

FIG4 is a partial structural diagram of a video device according to an embodiment of the present application, wherein the display is omitted;

FIG5 is a cross-sectional view of a portion of the structure of the video device shown in FIG4;

FIG6 is a cross-sectional view of a portion of the structure of a laryngeal mask according to an embodiment of the present application, wherein the display is omitted and the cross section passes through the light guide;

FIG7 is a schematic diagram of a laryngeal mask according to an embodiment of the present application placed in a human body, wherein the distal end of the video tube bypasses the tip of the epiglottis and is not bent; and

FIG8 is a second schematic diagram of a laryngeal mask according to an embodiment of the present application placed in a human body, wherein the distal end of the video tube is bent upward to push aside the epiglottis.

Description of Reference Numerals

10. Laryngeal mask body 11. Light guide 12. Catheter 13. Sealing seat

13”, air bag 16, connector 16a, card slot 20, video device

21. Display 22. Light source assembly 221. Light source 222. Reflector

223, light cone 23, housing 23a, light source cavity 23b, control cavity

23c, light emitting port 231, connecting platform 232, pressing portion 24, video tube

241. Rigid segment 242. Flexible segment 243. Snake segment 244. Video segment

25. Transmission assembly 26. Operating handle 90. Epiglottis 91. Glottis

92. Pharyngeal cavity 93. Esophagus 13'. Airbag seat

Detailed ways

An embodiment of the present application provides a laryngeal mask, please refer to Figures 1 to 3, the laryngeal mask includes a laryngeal mask body 10 and a video device 20 detachably connected to the laryngeal mask body 10.

Please refer to Figure 2. The laryngeal mask body 10 includes a light guide 11 (refer to Figure 6), a catheter 12, a gastric tube 17, and a sealing seat 13 connected to the distal end of the catheter 12. A light guide cavity (not shown) and a video cavity (not shown) are formed in the laryngeal mask body 10. The light guide 11 is pre-placed in the light guide cavity, that is, the light guide 11 has been pre-placed in the light guide cavity before the laryngeal mask is used. The gastric tube 17 extends from the proximal end of the catheter 12 to the distal end of the sealing seat 13. It can be understood that the sealing seat 13 can be an integrated or bonded soft structure, for example, at least part of the structure is molded using silicone material; the sealing seat 13 can also be a structural form of an airbag seat 13' and an airbag 13". In the present embodiment, the sealing seat 13 includes an airbag seat 13' and an airbag 13".

Please refer to Figures 3 to 5. The video device 20 includes a housing 23, a display 21, a video tube 24, a light source assembly 22, a transmission assembly 25, and an operating handle 26. The display 21 is mounted on the housing 23. The distal end of the video tube 24 is formed with an image sensor (not shown). The proximal end of the video tube 24 is connected to the housing 23. The video tube 24 is electrically connected to the display 21, for example, by a cable (not shown) to transmit the image information collected by the video tube 24 to the display 21. The video tube 24 is pluggable into the above-mentioned video cavity. Please refer to Figure 5. A light source cavity 23a and a control cavity 23b are formed in the housing 23. The light source assembly 22 is mounted in the light source cavity 23a. A light emitting port 23c for docking with the proximal end of the light guide 11 is formed on the housing 23. The light emitting port 23c is connected to the light source cavity 23a and is exposed on the surface of the housing 23. When the video device 20 is connected to the laryngeal mask body 10, the proximal end of the light guide 11 is docked with the light emitting port 23c, and the light of the light source assembly 22 passes through the light emitting port 23c and the light guide 11 in turn, and is emitted outward from the distal end of the light guide 11. In the video device 20 of the embodiment of the present application, the visible light emitted by the light source assembly 22 is transmitted to the light guide 11 through the light emitting port 23c, and the visible light in the light source assembly 22 is transmitted to the distal end of the laryngeal mask body 10 through the light guide 11 to provide lighting for the laryngeal mask. That is to say, the current in the light source assembly 22 will not enter the laryngeal mask body 10 (the shell 23 in the video device 20 will not enter the human body), thereby avoiding electric shock to the human body and improving the safety performance of the laryngeal mask; moreover, the light emitted by the light source assembly 22 will not be incorporated into the video tube 24, but will be independently transmitted to the light guide 11, so that there is no need to set the light source 221 in the video tube 24, and the structure of the video device 20 is simple; furthermore, the video tube 24 and the display 21 are both connected to the shell 23, that is to say, there is no need to reassemble and connect during the use of the laryngeal mask, which is convenient and quick to use, and the video device 20 can be reused.

Please continue to refer to FIG. 5 , the light source assembly 22 includes a light source 221, a reflector 222, and a light cone 223. The light source 221 may be an LED lamp or other luminous body, as long as it can emit visible light of sufficient intensity. The reflector 222 is arranged around the light source 221 to focus the light emitted by the light source 221 to the large end of the light cone 223, that is, the reflector 222 plays a focusing role. Further, in this embodiment, the reflector 222 is formed as a total reflection lens to enhance the focusing effect of the reflector 222 and reduce the loss. The small end of the light cone 223 is located at the light emission port 23c, and the light is emitted from the light emission port 23c after propagating to the small end of the light cone 223, thereby reducing the loss of the light propagating between the small end of the light cone 223 and the light emission port 23c. The light cone 223 may be a glass light cone 223, and further, a reflective film layer may be provided on the outer surface of the glass light cone 223 to improve the focusing efficiency of the glass light cone 223.

Continuing to refer to FIG. 5 , the transmission assembly 25 is installed in the control cavity 23b, the proximal end of the video tube 24 extends into the control cavity 23b and is connected to the transmission assembly 25, the operating handle 26 extends from the outside of the housing 23 into the control cavity 23b and is connected to the transmission assembly 25, and the operating handle 26 drives the transmission assembly 25 and then drives the distal end of the video tube 24 to bend and reset. In the prior art, the image sensor is located at the junction of the sealing seat and the catheter, and the airbag will block part of the viewing angle of the image sensor. When the epiglottis droops, the epiglottis may block the image sensor, and the image sensor cannot collect the light diffusely reflected by the glottis and surrounding tissues, and the image sensor cannot play its due role. At this time, if tracheal intubation is performed, either blind insertion is performed, which may cause damage to the glottis of the human body, or the laryngeal mask is pulled out again and the insertion is repeatedly tried, which will greatly prolong the operation time, increase the operation risk, and also increase the risk of damage to human tissues. For this reason, in the embodiment of the present application, after the laryngeal mask is inserted into the patient's body, the distal end of the video tube 24 bypasses the tip of the epiglottis 90. Since the distal end of the video tube 24 can be bent and reset, the distal end of the video tube 24 can obtain a better viewing angle of the glottis and the surrounding area. Even if the epiglottis 90 sags, the operator can control the distal end of the video tube 23 to bend and push aside the epiglottis to obtain a good field of view. When the epiglottis 90 does not sag, see FIG7 , at this time, the distal end of the video tube 24 can be kept in the initial state, or the distal end of the video tube 24 can be appropriately bent according to actual conditions so that the image sensor obtains a better field of view; when the epiglottis 90 sags and blocks the upper area of the video tube 24, see FIG8 , the operator turns the operating handle to control the distal end of the video tube 24 to bend upward, push aside the epiglottis 90, and eliminate the obstruction of the epiglottis 90. At the same time, in order to adjust the viewing angle of the image sensor, the bending angle at the distal end of the video tube 24 can be adjusted, for example, it can be bent upward by 10°, 20°, 90°, etc. After the distal end of the video tube 24 is bent, the operator can also control the distal end of the video tube 24 to reset as needed, that is, reset to the initial state shown in FIG7. It should be noted that the "initial state" refers to the state in which the operator does not additionally control the bending of the video tube 24, and the initial state can be that the video tube 24 is straight or slightly bent.

Please refer to FIG. 4 and FIG. 5. From the proximal end to the distal end, the video tube 24 includes a rigid section 241, a flexible section 242, a snake section 243 and a video section 244 in sequence. The distal end of the video tube 24 is bent and reset by the snake section 243. The outer layer of the rigid section 241 is formed into a sleeve rod to increase the structural strength of the video tube 24. The sleeve rod can be a metal rod or a rod made of other materials, as long as it has sufficient strength and toughness. Part of the structure of the rigid section 241 is inserted into the shell 23 and fixedly connected to the shell 23. The rigid section 241 can improve the anti-bending ability of the connection between the video tube 24 and the shell 23, and prevent the video tube 24 from being damaged after being bent multiple times. The rigid section 241 described in this embodiment refers to the part of the video tube 24 that has a large rigidity and cannot be bent, and the flexible section 242 refers to the relatively soft and bendable part of the video tube 24. When the video device 20 and the laryngeal mask body 10 are assembled, the rigid section 241 facilitates the insertion of the video tube 24 into the video cavity of the laryngeal mask body 10, and the rigid section 241 can enhance the installation stability of the video device 20; when the video device 20 is disassembled, it is convenient for the operator to apply force to the rigid section 241 to pull the video tube 24 out of the video cavity; during the use of the laryngeal mask, when it is necessary to adjust the position of the laryngeal mask in the human pharyngeal cavity 92, the operator holds the proximal end of the catheter 12 and swings it back and forth to adjust, and the rigid section 241 located in the video cavity increases the rigidity of the proximal end of the catheter 12, which is convenient for transmitting the force to the catheter 12 and the connector 16 (the catheter 12 itself is flexible and easy to bend, so as to adapt to the angle change from the human oral cavity to the pharyngeal cavity 92). It can be understood that the length of the rigid section 241 is controlled on the premise that it can be smoothly inserted into the airway of the human body.

Please continue to refer to FIG5 . The light source cavity 23a is located in front of the control cavity 23b, that is, the light source cavity 23a and the control cavity 23b are arranged along the front-to-back direction of the housing 23, so that the lateral dimension of the housing 23 can be reduced, making the structure of the video device 20 compact and miniaturized, and reserving space for possible tracheal intubation and gastric drainage tube insertion. In order to make the structure of the video device 20 more compact and miniaturized, the light cone 223 is placed obliquely, and the front side of the housing 23 gradually shrinks inward from top to bottom, that is, along the front-to-back direction of the housing 23, the size of the upper part of the housing 23 is larger than the size of the lower part of the housing 23, and the inclination direction of the light cone 223 is roughly equivalent to the inclination of the front side of the housing 23. The structure of the housing 23 fully utilizes the structural characteristics of the light cone 223, making the structure of the video device 20 compact and reasonably laid out.

Please refer to Fig. 4, the video device 20 also includes a connecting platform 231 extending laterally from both lateral sides of the lower part of the housing 23, a clamping structure (not shown) disposed at the bottom of the connecting platform 231, and a pressing portion 232 disposed on the lateral outer side of the connecting platform 231, and the pressing portion 232 is drivingly connected to the clamping structure. In order to facilitate the connection between the proximal end of the catheter 12 and the video device 20, please refer to Fig. 2, the laryngeal mask body 10 includes a connecting member 16 formed at the proximal end of the catheter 12, and a clamping groove 16a that cooperates with the clamping structure is formed on the upper surface of the connecting member 16, and the pressing portion 232 drives the clamping structure to lock and unlock the clamping groove 16a.

In the present embodiment, the light guide 11 is formed as a plastic optical fiber (POF for short). Plastic optical fiber is an optical fiber made of a highly transparent polymer, such as a type of optical fiber with any one or more of polystyrene (PS), polymethyl methacrylate (PMM), polycarbonate (PC), etc. as the core material, and PMM, fluoroplastics, etc. as the skin material. Plastic optical fiber is light, soft, and more resistant to damage (vibration and bending); it can utilize the mature simple drawing process of polymers, and the cost is relatively low; it has good flexibility and is easy to process and use. During the use of the laryngeal mask body 10, the operator will bend the laryngeal mask body 10 to varying degrees to smoothly insert it into the human body. The embodiment of the present application cleverly applies plastic optical fiber to the light guide of the laryngeal mask body 10, so that the light guide 11 will not break during the bending process of the laryngeal mask body 10, thereby ensuring the reliability and high-quality lighting performance of the light guide 11. Furthermore, it can greatly reduce the production cost, which is particularly conducive to promotion and application.

Please refer to FIG. 6 , the distal end of the light guide 11 and the distal end of the video tube 24 are both extended into the sealing seat 13, and the distal end of the light guide 11 is isolated from the space in the sealing seat 13, that is, the distal end of the light guide 11 is sealed in the light guide cavity, which is convenient for the sealed installation of the light guide 11; the distal end of the video tube 24 is also isolated from the space in the sealing seat 13, that is, the distal end of the video tube 24 is sealed in the video cavity, so that it will not contact the internal tissue of the human body during use, and the video tube 24 can be reused relatively safely. According to relevant national standards, if the reusable equipment in surgery contacts with human tissue during surgery, it needs to be disinfected at a high level after surgery. If the equipment does not contact with human tissue during surgery, it can be disinfected at a general level after surgery. In the prior art, the end of the video tube is exposed in the sealing seat, and it will contact the secretions in the human body, and may also contact the epiglottis and other tissues of the human body. Therefore, it needs to be disinfected at a high level such as soaking in disinfectant after surgery, and even so, there is still a large risk of cross infection. In the embodiment of the present application, the video tube does not come into contact with the human body, thereby increasing safety performance; the video tube does not need to be immersed in disinfectant or other disinfection processes during the postoperative disinfection procedure, and a lower level of disinfection method may be used, such as wiping the image sensor.

Furthermore, the distal end of the video tube 24 can drive the distal end of the light guide 11 to bend and reset synchronously, so that the direction of the light emitted by the light guide 11 can always change synchronously with the viewing angle direction of the distal end of the video tube 24, and always ensure the light intensity required by the image sensor.

The operation process and working principle of the laryngeal mask of the embodiment of the present application are as follows:

First, the video tube 24 is inserted into the video cavity. When the video tube 23 is inserted into place, the snap-fit structure automatically snaps into the slot 16a to lock the video device 20 and the laryngeal mask body 10, so that there will be no relative movement between the two. At this time, the light emitting port 23c is naturally in a position aligned with the proximal end of the light guide 11, and there is no need for deliberate docking, which saves time and is easy to operate; the laryngeal mask body 10 and the video device 20 are ready for connection.

Then, the power supply of the video device 20 is turned on (not shown), and the display 21 lights up;

Then, the visualization function of the video device 20 is turned on, and the light source 221 outputs visible light to the proximal end of the light guide 11, and finally emits it to the internal tissue of the human body from the distal end of the light guide 11. Subsequently, referring to FIG7, the operator gradually inserts the laryngeal mask body 10 from the patient's mouth until the distal end of the laryngeal mask body reaches the entrance of the esophagus 93, and the image information collected by the distal end of the video tube 24 is transmitted to the display 21. If the distal end of the video tube 24 does not obtain a good visual field, the operator can turn the operating handle to control the distal end of the video tube 24 to bend upward to a suitable angle; the operator can roughly judge whether the placement position of the distal end of the laryngeal mask body 10 is appropriate based on the image presented by the display 21. If it is not appropriate, it is necessary to make timely adjustments to ensure that the distal end of the laryngeal mask body 10 can seal the esophagus 93 of the human body to prevent gas from entering the stomach of the human body; after the air bag 14 is inflated, ensure that the air bag 14 fits and surrounds the opening of the glottis 91. Please refer to FIG. 8 . When the epiglottis 90 of a human body droops and blocks the image sensor 231 , the operating handle 26 is moved to drive the snake bone section 243 of the video tube 23 to bend upward to push the epiglottis 90 away.

If endotracheal intubation is not required, the video device 20 is removed and a ventilator pipe connector is directly connected to the proximal end of the catheter 12 .

If tracheal intubation is required, the trachea is gradually inserted from the proximal end of the laryngeal mask body 10 to the distal end, passing through the sealing seat 13 and the glottis 91 in sequence (the direction indicated by the arrows in Figures 7 and 8 indicates that the airflow leads to the lungs of the human body). Tracheal intubation is performed under visualization. It should be noted that during the tracheal intubation process, a ventilator pipeline connector can be connected to the proximal end of the trachea, and the patient's respiratory tract can be ventilated while the tube is intubated. After the trachea is inserted into place, the ventilator pipeline connector and the laryngeal mask can be removed in sequence, leaving only the trachea, and then the ventilator pipeline connector can be connected to the proximal end of the trachea. Alternatively, the laryngeal mask can be retained after the trachea is inserted into place, and only the ventilator pipeline is connected to the proximal end of the tracheal intubation.

The various embodiments/implementations provided in this application can be combined with each other without causing any contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A video device for a laryngeal mask, characterized in that it comprises: A shell (23), wherein a light source cavity (23a) is formed in the shell (23), and a light emitting port (23c) for docking with a light guide member (11) of a laryngeal mask is formed on the shell (23), the light emitting port (23c) is communicated with the light source cavity (23a), and the light emitting port (23c) is exposed on the outer surface of the shell (23); A light source assembly (22), wherein the light source assembly (22) is disposed in the light source cavity (23a), and visible light emitted by the light source assembly (22) is emitted through the light emission port (23c); A video tube (24), the proximal end of which is connected to the housing (23); A display (21), wherein the display (21) is mounted on the housing (23), and the video tube (24) is electrically connected to the display (21); The light source assembly (22) comprises a light source (221), a reflector (222) and a light cone (223); the reflector (222) is arranged around the light source (221) to focus the light emitted by the light source (221) onto the large end of the light cone (223); and the small end of the light cone (223) is located at the light emission port (23c). 2. The video device according to claim 1 is characterized in that the reflective cover (222) is formed as a total reflection lens. 3. The video device according to claim 1 is characterized in that a control cavity (23b) is formed in the shell (23), and the video device includes a transmission assembly (25) and an operating handle (26), the transmission assembly (25) is installed in the control cavity (23b), the proximal end of the video tube (24) extends into the control cavity (23b) and is drivingly connected to the transmission assembly (25), the operating handle (26) extends into the control cavity (23b) from the outside of the shell (23) and is drivingly connected to the transmission assembly (25), and the operating handle (26) drives the distal end of the video tube (24) to bend and reset through the transmission assembly (25). 4. The video device according to claim 3 is characterized in that the light source cavity (23a) is located at the front side of the control cavity (23b), and the front side of the shell (23) is formed into an inclined structure that gradually shrinks inward from top to bottom. 5. The video device according to claim 1 is characterized in that the display (21) is rotatably mounted on the top of the shell (23). 6. A laryngeal mask, characterized in that it comprises a laryngeal mask body (10) and a video device of the laryngeal mask according to any one of claims 1 to 5, wherein the laryngeal mask body (10) comprises a catheter (12), a sealing seat (13) and a light guide (11), wherein the sealing seat (13) is connected to the distal end of the catheter (12), and the proximal end of the catheter (12) is detachably connected to the bottom of the shell (23); the light guide (11) and the video tube (24) are arranged at intervals from each other, a video cavity and a light guide cavity are formed in the laryngeal mask body (10), and the video tube (24) can be plugged into the video cavity, the light guide (11) is pre-placed in the light guide cavity, and the proximal end of the light guide (11) is connected to the light emitting port (23c) to transmit the light from the light emitting port (23c) to the distal end of the light guide (11). 7. The laryngeal mask according to claim 6, characterized in that the light guide (11) is formed as a plastic optical fiber. 8. The laryngeal mask according to claim 6 is characterized in that the video device includes a connecting platform (231) extending laterally outward from both sides of the bottom of the shell (23), a clamping structure arranged at the bottom of the connecting platform (231), and a pressing portion (232) arranged on the laterally outer side of the connecting platform (231); the laryngeal mask body (10) includes a connecting piece (16) formed at the proximal end of the catheter (12), a clamping groove (16a) is formed on the connecting piece (16), and the pressing portion (232) drives the clamping structure to lock or unlock the clamping groove (16a). 9. The laryngeal mask according to claim 8 is characterized in that the distal end of the light guide (11) and the distal end of the video tube (24) both extend into the sealing seat (13), the distal end of the light guide (11) and the space inside the sealing seat (13) are isolated from each other, and the distal end of the video tube (24) and the space inside the sealing seat (13) are isolated from each other. 10. The laryngeal mask according to claim 9, characterized in that the distal end of the video tube (24) can drive the distal end of the light guide (11) to bend and reset synchronously.