CN111514421A

CN111514421A - Laryngeal mask and video device thereof

Info

Publication number: CN111514421A
Application number: CN201910107668.9A
Authority: CN
Inventors: 李大庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-02
Filing date: 2019-02-02
Publication date: 2020-08-11
Anticipated expiration: 2039-02-02
Also published as: CN111514421B

Abstract

The embodiment of the application provides a laryngeal mask and a video device thereof, wherein the video device comprises a shell, a light source component, a display and a video tube, a light source cavity is formed in the shell, a light emitting port for being in butt joint with a light guide part of the laryngeal mask is formed in 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 visible light emitted by the light source assembly is emitted through the light emitting port; the near end of the video tube is connected with the shell; the display is installed on the shell, and the video tube is electrically connected with the display. According to the video device provided by the embodiment of the application, the current in the light source component cannot enter the laryngeal mask main body, so that the safety performance of the laryngeal mask can be improved; the structure of the video device is simple, the video tube and the display do not need to be assembled and connected again in the using process of the laryngeal mask, the use is convenient and fast, and the video device can be repeatedly used.

Description

Laryngeal mask and video device thereof

Technical Field

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

Background

The laryngeal mask as an supraglottic ventilation device belongs to an artificial respiratory tract, and is widely applied to clinic due to the advantages of simple and convenient operation, high success rate, small injury and the like after being invented in 1983. A laryngeal mask is an artificial airway device between a face mask and a tracheal cannula that allows a patient to maintain spontaneous breathing and also allows positive pressure ventilation.

The laryngeal mask without the visualization function is generally inserted into the body of a patient in a blind way, and because the details of the throat cannot be peeped during operation, an operator can only insert the laryngeal mask in a blind way by hand feeling and experience. Blind insertion may cause inaccurate placement of the laryngeal mask, and inaccurate placement may cause a series of subsequent problems, such as failure to effectively isolate respiratory tract and digestive tract, resulting in incomplete sealing of the laryngeal mask, gas leakage, flatulence, reflux, and even aspiration of the patient; inaccuracies in position also increase the likelihood of intraoperative laryngeal mask movement. In addition, blind insertion can increase the probability of selecting an improper 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 many times over and over again, which may extend the operation time and delay the rescue of the critically ill patient. And the oral mucus of the patient can be increased due to the trial insertion for many times, and the operation difficulty is increased accordingly. In addition, repeated operation easily causes pharyngeal cavity injury bleeding of patients, great cardiovascular reaction, increased operation risk and the like.

In order to ensure the accuracy of the laryngeal mask placement position, an operator usually checks through various indirect means, such as observing the fluctuation of the chest, the lung compliance, auscultation whether air leakage exists or not, observing the neck bulge, monitoring PetCO2 (end-tidal carbon dioxide partial pressure), mouth opening observation and the like. There are some problems with using the soft visual lens directly. Firstly, the visual soft lens is a reusable instrument and directly contacts with the internal tissue of a patient, so strict disinfection is required, a certain time is required for the strict disinfection, the operation flow of the disinfection is relatively more, the disinfection cost is relatively increased, the requirement on the anti-soaking performance of the image tube is also high, moreover, during the disinfection, medical staff has to prepare a spare instrument, the use cost is objectively increased, and even if so, a certain cross infection risk exists; secondly, the cost of the visual soft lens is relatively high, and the visual soft lens does not belong to a standby instrument which can be obtained randomly, for example, the visual soft lens is possibly lacked in some emergency airway treatment or part of basic medical institutions; third, the visual soft lens is mainly used for examination after the laryngeal mask is inserted or guiding the tracheal cannula to enter the glottis through the laryngeal mask, but the whole visual process is not realized in the laryngeal mask placing process, so that the repeated insertion of the laryngeal mask is difficult to effectively reduce.

In view of this, there is a need to achieve the visual function of the laryngeal mask itself, and a range of video laryngeal mask designs have emerged.

In the patent of the invention with the publication number CN105050481B entitled "laryngeal mask with retractable rigid tongue and means for ventilation and intubation", the battery and the lighting system are disposed on the laryngeal mask body, and the lighting current is large, so that once the current leaks, the normal use of other surgical instruments may be greatly affected, or the electric spark generated thereby may generate the potential risk of contact fire with the leaked oxygen during oxygen delivery of the patient, and may generate a great safety hazard for the patient.

Disclosure of Invention

In view of the above, it is desirable to provide a safe laryngeal mask and a video device thereof.

In order to achieve the above object, a first aspect of the embodiments of the present application provides a laryngeal mask video device, which includes a housing, a light source assembly, a video tube, and a display, wherein a light source cavity is formed in the housing, a light emitting port for butting against a light guide of the laryngeal mask is formed on the housing, the light emitting port is communicated with the light source cavity, and the light emitting port is exposed on an outer surface of the housing; the light source assembly is arranged in the light source cavity, and visible light emitted by the light source assembly is emitted through the light emitting port; the near end of the video tube is connected with the shell; the display is installed on the shell, and the video tube is electrically connected with the display.

Furthermore, the light source assembly comprises a light source, a reflector and a light cone, the reflector is arranged around the light source to focus 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 emitting opening.

Further, the reflection cover is formed as a total reflection lens.

Further, be formed with the control chamber in the casing, the video device includes drive assembly and operating handle, drive assembly install in the control chamber, the proximal end portion of video pipe stretches into in the control chamber and with the drive assembly drive is connected, operating handle follows the outside of casing stretches into in the control chamber and with the drive assembly drive is connected, operating handle passes through the drive assembly drive the distal end of video pipe is crooked and reset.

Further, the light source cavity is located on the front side of the control cavity, and the front side of the shell is formed into an inclined structure which gradually shrinks inwards from top to bottom.

Further, 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, including a laryngeal mask main body and an image device of the laryngeal mask of any one of the above, wherein the laryngeal mask main body includes a conduit, a seal holder and a light guide, the seal holder is connected to a distal end of the conduit, and a proximal end of the conduit is detachably connected to a bottom of the housing; the light guide piece and the image tube are arranged at intervals, an image cavity channel and a light guide cavity channel are formed in the laryngeal mask main body, the image tube can be inserted into the image cavity channel in an inserting mode, the light guide piece is arranged in the light guide cavity in advance, and the near end of the light guide piece is in butt joint with the light emitting opening so as to conduct light from the light emitting opening to the far end of the light guide piece.

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

Furthermore, the video device comprises a connecting table extending outwards from two sides of the bottom of the shell in the transverse direction, a clamping structure arranged at the bottom of the connecting table, and a pressing part arranged on the outer side of the connecting table in the transverse direction; the laryngeal mask main body comprises a connecting piece formed at the near end of the catheter, a clamping groove is formed in the connecting piece, and the pressing portion drives the clamping structure and the clamping groove to be locked or unlocked.

Furthermore, the far end of the light guide piece and the far end of the video tube extend into the sealing seat, the far end of the light guide piece is isolated from the space in the sealing seat, and the far end of the video tube is isolated from the space in the sealing seat.

Further, the far end of the image tube can drive the far end of the light guide piece to be synchronously bent and reset.

According to the video device provided by the embodiment of the application, the current in the light source component cannot enter the laryngeal mask main body (the shell in the video device cannot enter a human body), so that the human body is prevented from electric shock, and the safety performance of the laryngeal mask can be improved; in addition, the light emitted by the light source component can not be merged into the video tube, but can be independently transmitted into the light guide piece, and the structure of the video device is simple; moreover, the video tube and the display are both connected with the shell, namely, the laryngeal mask does not need to be assembled and connected again in the using process, the use is convenient and fast, and the video device can be repeatedly used together.

Drawings

Figure 1 is a schematic diagram of the structure of a laryngeal mask in accordance with an embodiment of the present application;

figure 2 is a schematic structural view of a laryngeal mask body in accordance with an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a video apparatus according to an embodiment of the present application;

fig. 4 is a schematic partial structural view of a video apparatus according to an embodiment of the present application, in which a display is omitted;

FIG. 5 is a sectional view showing a partial structure of the image viewing device shown in FIG. 4;

FIG. 6 is a cross-sectional view of a portion of the structure of a laryngeal mask in accordance with an embodiment of the present application, with the display omitted and the cross-section passing through a light guide;

figure 7 is a first schematic view of a laryngeal mask in accordance with an embodiment of the present application placed in a human body with the distal end of the viewing tube passing around the tip of the epiglottis and unbent; and

figure 8 is a second schematic view of the laryngeal mask of the embodiment of the present application placed in a human body with the distal end of the viewing tube bent upward to clear the epiglottis.

Description of the reference numerals

10. Laryngeal mask body 11, light guide 12, conduit 13 and sealing seat

13', air bag 16, connecting piece 16a, clamping groove 20 and video device

21. Display 22, light source module 221, light source 222, and reflector

223. Light cone 23, shell 23a, light source cavity 23b and control cavity

23c, light emitting port 231, connecting table 232, pressing part 24, and video tube

241. Rigid segment 242, flexible segment 243, snake bone segment 244, video segment

25. Transmission assembly 26, operating handle 90, epiglottis 91, glottis

92. Pharyngeal cavity 93, esophagus 13', air sac seat

Detailed Description

Referring to fig. 1 to 3, the laryngeal mask includes a laryngeal mask body 10 and a vision device 20 detachably connected to the laryngeal mask body 10.

Referring to fig. 2, the laryngeal mask body 10 includes a light guide 11 (see fig. 6), a catheter 12, a gastric tube 17, and a sealing seat 13 connected to a distal end of the catheter 12. A light guide channel (not shown) and an image channel (not shown) are formed in the laryngeal mask body 10, and the light guide 11 is preset in the light guide channel, that is, the light guide 11 is preset in the light guide channel before the laryngeal mask is used. A gastric tube 17 extends from the proximal end of the catheter 12 to the distal end of the seal holder 13. It will be appreciated that the sealing seat 13 may be of one-piece or bonded soft construction, for example at least part of the construction being moulded from a silicone material; the sealing seat 13 may also be in the form of a balloon seat 13' and a balloon 13 ". In this embodiment, the seal seat 13 includes an airbag seat 13' and an airbag 13 ″.

Referring to fig. 3-5, the image device 20 includes a housing 23, a display 21, a 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 image tube 24 is formed with an image sensor (not shown), the proximal end of the image tube 24 is connected to the housing 23, and the image tube 24 is electrically connected to the display 21, for example, by a cable (not shown), so as to transmit the image information collected by the image tube 24 to the display 21, and the image tube 24 is inserted into the aforementioned image channel in an insertable manner. Referring to fig. 5, a light source cavity 23a and a control cavity 23b are formed in the housing 23, the light source assembly 22 is installed in the light source cavity 23a, a light emitting port 23c for abutting against the proximal end of the light guide 11 is formed on the housing 23, the light emitting port 23c is communicated with the light source cavity 23a, and the light emitting port 23c is exposed on the surface of the housing 23. When the image device 20 is connected to the laryngeal mask body 10, the proximal end of the light guide member 11 is in butt joint with the light emitting opening 23c, and the light of the light source assembly 22 passes through the light emitting opening 23c and the light guide member 11 in sequence and then is emitted from the distal end of the light guide member 11. In the video device 20 of the embodiment of the application, the visible light emitted by the light source assembly 22 is transmitted to the light guide member 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 main body 10 through the light guide member 11 so as to provide illumination for the laryngeal mask, that is, the current in the light source assembly 22 cannot enter the laryngeal mask main body 10 (the shell 23 in the video device 20 cannot enter the human body), so that the human body is prevented from getting an electric shock, and the safety performance of the laryngeal mask can be improved; moreover, the light emitted from the light source assembly 22 is not merged into the image tube 24, but independently transmitted into the light guide 11, so that the light source 221 is not required to be arranged in the image tube 24, and the structure of the image device 20 is simple; furthermore, the image tube 24 and the display 21 are both connected to the housing 23, i.e. there is no need to reassemble the connection during the use of the laryngeal mask, the use is convenient and fast, and the image device 20 can be reused together.

With continued reference to FIG. 5, the light source module 22 includes a light source 221, a reflector 222, and a light cone 223. The light source 221 may be an LED lamp, or may be another light emitter, as long as it can emit visible light with sufficient intensity. The reflector 222 covers the light source 221 to focus the light emitted from the light source 221 to the large end of the light cone 223, that is, the reflector 222 functions to condense the light. Further, in the present embodiment, the reflection cover 222 is formed as a total reflection lens to enhance the light-gathering effect of the reflection cover 222 and reduce the loss. The small end of the light cone 223 is located at the light emitting port 23c, and light is emitted from the light emitting port 23c after being transmitted to the small end of the light cone 223, so that the loss of the light transmitted between the small end of the light cone 223 and the light emitting port 23c is reduced. The light cone 223 may be a glass light cone 223, and further, a reflective film layer may be disposed on an outer surface of the glass light cone 223 to improve the light condensing efficiency of the glass light cone 223.

With continued reference to fig. 5, the driving element 25 is disposed within the control chamber 23b, the proximal end of the viewing tube 24 extends into the control chamber 23b and is drivingly connected to the driving element 25, the operating handle 26 extends from the housing 23 into the control chamber 23b and is drivingly connected to the driving element 25, and the operating handle 26 drives the driving element 25 to thereby drive the distal end of the viewing tube 24 to bend and reposition. Among the prior art, image sensor's position is in the juncture of seal receptacle and pipe, the gasbag can block image sensor's partial visual angle scope, when the epiglottis is flagging, the epiglottis can block image sensor, image sensor can't gather glottis and peripheral tissue diffuse reflection's light, image sensor can't exert due effect, if carry out trachea cannula this moment, or carry out blind insertion, so probably cause the damage to human glottis, or try to insert repeatedly after pulling out the laryngeal mask again, if so can greatly prolong operation time, increase the operation risk, also increase the damage risk to human tissue. Therefore, in the embodiment of the present application, after the laryngeal mask is inserted into the patient, the distal end of the image tube 24 passes around the tip of the epiglottis 90, and since the distal end of the image tube 24 can be bent and restored, the distal end of the image tube 24 can obtain a better view angle of the glottis and the peripheral region, and even if the epiglottis 90 sags down, the operator can control the distal end of the image tube 23 to bend and open the epiglottis to obtain a good view. When the epiglottis 90 does not sag, see fig. 7, the distal end of the image tube 24 may be maintained in an initial state, or the distal end of the image tube 24 may be appropriately bent according to actual conditions so that the image sensor obtains a better field of view; when the epiglottis 90 droops to block the area above the image tube 24, referring to fig. 8, the operator pulls the operating handle to control the distal end of the image tube 24 to bend upward, and pulls the epiglottis 90 open to block the epiglottis 90. Meanwhile, in order to adjust the view angle of the image sensor, the bending angle at the distal end of the view tube 24 may be adjustable, for example, bent upward by 10 °, 20 °, 90 °, and so on, and after the distal end of the view tube 24 is bent, the operator may also control the distal end of the view tube 24 to be reset as required, that is, to be reset to the initial state shown in fig. 7. It should be noted that the "initial state" refers to a state in which the operator does not have extra control over the bending of the tube 24, and the initial state may be a state in which the tube 24 is straight or slightly bent.

Referring to fig. 4 and 5, the view tube 24 sequentially includes a rigid section 241, a flexible section 242, a serpentine section 243 and a view section 244 from the proximal end to the distal end, the distal end of the view tube 24 is bent and restored by the serpentine section 243, the outer layer of the rigid section 241 is formed as a loop bar to increase the structural strength of the view tube 24, and the loop bar may be a metal bar or a bar made of other materials as long as it has sufficient strength and toughness. The rigid section 241 is inserted into the housing 23 and fixedly connected to the housing 23, and the rigid section 241 can improve the bending resistance of the connection between the image tube 24 and the housing 23, and prevent the image tube 24 from being damaged after being bent for many times. The rigid section 241 in this embodiment refers to a portion of the image tube 24 that is relatively rigid and cannot be bent, and the flexible section 242 refers to a portion of the image tube 24 that is relatively flexible and can be bent. When the image device 20 and the laryngeal mask body 10 are assembled, the rigid section 241 facilitates the insertion of the image tube 24 into the image cavity of the laryngeal mask body 10, and the rigid section 241 can enhance the installation stability of the image device 20; when the image device 20 is disassembled, the operator can conveniently apply force to the rigid section 241 to pull the image tube 24 out of the image cavity; when the laryngeal mask is used and the position of the laryngeal mask in the pharyngeal cavity 92 of a human body needs to be adjusted, an operator holds the proximal end of the catheter 12 to swing back and forth, the rigid section 241 in the visual cavity increases the rigidity of the proximal end of the catheter 12, and acting force is conveniently transmitted to the catheter 12 and the connector 16 (the catheter 12 is flexible and easy to bend so as to adapt to the angle change from the oral cavity of the human body to the pharyngeal cavity 92). It will be appreciated 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.

With continued reference to fig. 5, the light source chamber 23a is located at the front side of the control chamber 23b, that is, the light source chamber 23a and the control chamber 23b are arranged along the front-back direction of the housing 23, so that the transverse dimension of the housing 23 can be reduced, the image device 20 can be compact and miniaturized, and a space is reserved for possible trachea intubation and stomach drainage tube insertion. In order to make the structure of the image viewing device 20 more compact and compact, the light cone 223 is disposed obliquely, the front side of the housing 23 gradually shrinks inward from top to bottom, that is, along the front-back direction of the housing 23, the size of the upper part of the housing 23 is larger than that of the lower part of the housing 23, the oblique direction of the light cone 223 is approximately equivalent to the inclination of the front side of the housing 23, the structure of the housing 23 makes full use of the structural characteristics of the light cone 223, so that the structure of the image viewing device 20 is compact and reasonable in layout.

Referring to fig. 4, the image device 20 further includes a connecting platform 231 extending laterally from two lateral sides of the lower portion of the housing 23, a clamping structure (not shown) disposed at the bottom of the connecting platform 231, and a pressing portion 232 disposed at a lateral outer side of the connecting platform 231, wherein the pressing portion 232 is drivingly connected to the clamping structure. To facilitate the connection between the proximal end of the catheter 12 and the image device 20, referring to fig. 2, the laryngeal mask body 10 includes a connecting member 16 formed at the proximal end of the catheter 12, a locking groove 16a matched with the locking structure is formed on the upper surface of the connecting member 16, and the pressing portion 232 drives the locking structure to be locked with and unlocked from the locking groove 16 a.

In this embodiment, the light guide 11 is formed as a Plastic Optical Fiber (POF), which is an optical fiber made of a high transparent polymer, such as an optical fiber with any one or more of Polystyrene (PS), polymethyl methacrylate (PMM), Polycarbonate (PC) as a core material, and PMM, fluoroplastic, etc. as a sheath material. Plastic optical fibers are light, flexible, and more resistant to damage (vibration and bending); the mature simple drawing process of the polymer can be utilized, and the cost is lower; good flexibility and easy processing and use. Laryngeal mask main part 10 is in the use, and operating personnel can buckle laryngeal mask main part 10 to different degrees to put into human body smoothly with it, this application embodiment is used for the leaded light of laryngeal mask main part 10 with plastic fiber ingeniously, so that leaded light 11 can not break at laryngeal mask main part 10 in-process of buckling, and then guarantees leaded light 11's reliability and high-quality illumination performance, moreover, can also greatly reduce manufacturing cost, be favorable to popularizing and applying very much.

Referring to fig. 6, the distal end of the light guide 11 and the distal end of the image tube 24 both extend into the sealing seat 13, and the distal end of the light guide 11 is isolated from the space inside the sealing seat 13, i.e. the distal end of the light guide 11 is sealed inside the light guide channel, which facilitates the sealing installation of the light guide 11; the far end of the video tube 24 is isolated from the space in the sealing seat 13, that is, the far end of the video tube 24 is sealed in the video cavity, so that the far end of the video tube 24 does not contact with the internal tissue of the human body during use, and the video tube 24 can be reused relatively safely. According to the relevant national standards, the equipment which can be reused in the operation needs high-grade disinfection after the operation if the equipment is contacted with the human tissue in the operation, and can be disinfected at a common grade after the operation if the equipment is not contacted with the human tissue in the operation. In the prior art, the end part of the video tube is exposed in the sealing seat, and can contact secretions and the like in the human body and possibly contact tissues such as epiglottis and the like of the human body, so a high-grade disinfection mode such as soaking by a disinfectant is needed after the operation, and even then, a larger risk of cross infection still exists. In the embodiment of the application, the video tube is not contacted with the human body, so that the safety performance is improved; the video tube does not need to be disinfected by disinfectant soaking and the like in a postoperative disinfection procedure, and can be disinfected in a lower grade mode, such as wiping an image sensor.

Further, the distal end of the image tube 24 can bring the distal end of the light guide 11 to bend and reposition synchronously. Therefore, the direction of the light emitted by the light guide member 11 can be changed synchronously with the visual angle direction of the far end of the video tube 24, and the illumination intensity required by the view image sensor is ensured all the time.

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

firstly, the video tube 24 is inserted into the video cavity, when the video tube 23 is inserted in place, the clamping structure is automatically clamped into the clamping groove 16a to further lock the video device 20 and the laryngeal mask main body 10, so that relative movement between the video device and the laryngeal mask main body 10 can not be generated, at the moment, the light emitting port 23c is naturally positioned at a position aligned with the near end of the light guide member 11, the deliberate butt joint is not needed, time is saved, and the operation is simple and convenient; the laryngeal mask body 10 and the viewing device 20 are ready for connection.

Subsequently, the power supply (not shown) of the video apparatus 20 is turned on, and the display 21 is lit;

then, the visualization function of the image 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 the visible light from the distal end portion of the light guide 11 to the internal tissue of the human body. Then, referring to fig. 7, the operator gradually inserts the laryngeal mask body 10 from the oral cavity of the patient until the distal end portion of the laryngeal mask body abuts against the entrance of the food channel 93, the image information collected by the distal end of the image tube 24 is transmitted to the display 21, and if the distal end of the image tube 24 does not obtain a good view, the operator can toggle the operation handle to control the distal end of the image tube 24 to bend upwards to a proper angle; an operator can roughly judge whether the placement position of the far end of the laryngeal mask main body 10 is proper or not according to the image displayed by the display 21, if not, the operator needs to adjust the placement position in due time so as to ensure that the far end part of the laryngeal mask main body 10 can seal the esophagus 93 of the human body and prevent air from entering the stomach of the human body; ensuring that the air bag 14 fits around and surrounds the glottis 91 opening after the air bag 14 is inflated. Referring to fig. 8, when the epiglottis 90 of the human body hangs down to shield the image sensor 231, the operating handle 26 is pulled, and the snake bone segment 243 of the image tube 23 is driven to bend upwards to pull the epiglottis 90 open.

If the trachea cannula is not needed, the visual device 20 is pulled out, and the proximal end of the catheter 12 is directly connected with a breathing machine pipeline connector.

If an endotracheal tube is desired, the trachea is inserted progressively from the proximal end of the laryngeal mask body 10 to the distal end, past the sealing seat 13 and the glottis 91 in that order (the direction of the arrows in figures 7 and 8 indicate the flow of gas to the lungs of the person). The endotracheal tube operates under visualization. It should be noted that, in the process of tracheal intubation, the proximal end of the trachea can be connected with a respirator pipeline connector, and the patient respiratory tract can be ventilated while intubation is carried out. After the trachea is inserted in place, the respirator pipeline joint and the laryngeal mask can be pulled out in sequence, only the trachea is reserved, then the respirator pipeline joint is connected to the near end of the trachea, and the laryngeal mask can be reserved after the trachea is inserted in place, and only the near end of the trachea cannula is connected with the respirator pipeline.

The various embodiments/implementations provided herein may be combined with each other without contradiction.

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

Claims

1. A laryngeal mask imaging device, comprising:

the laryngeal mask comprises a shell (23), wherein a light source cavity (23a) is formed in the shell (23), a light emitting port (23c) used for being in butt joint with a light guide part (11) of the laryngeal mask is formed in the shell (23), the light emitting port (23c) is communicated with the light source cavity (23a), and the light emitting port (23c) is exposed out of the outer surface of the shell (23);

the light source assembly (22), the light source assembly (22) is arranged in the light source cavity (23a), and visible light emitted by the light source assembly (22) is emitted through the light emitting port (23 c);

a video tube (24), a proximal end of the video tube (24) being connected to the housing (23);

a display (21), the display (21) being mounted on the housing (23), the video tube (24) being electrically connected to the display (21).

2. The image viewing device according to claim 1, wherein the light source assembly (22) comprises a light source (221), a reflector (222), and a light cone (223), the reflector (222) is disposed around the light source (221) to focus the light emitted from the light source (221) to a large end of the light cone (223), and a small end of the light cone (223) is located at the light emitting port (23 c).

3. A viewing device according to claim 2, wherein the reflective cover (222) is formed as a total reflection lens.

4. The image device according to claim 1, wherein a control cavity (23b) is formed in the housing (23), the image device comprises a transmission assembly (25) and an operating handle (26), the transmission assembly (25) is installed in the control cavity (23b), the proximal end portion of the image tube (24) extends into the control cavity (23b) and is in driving connection with the transmission assembly (25), the operating handle (26) extends into the control cavity (23b) from the outside of the housing (23) and is in driving connection with the transmission assembly (25), and the operating handle (26) drives the distal end of the image tube (24) to bend and reset through the transmission assembly (25).

5. A visual device according to claim 4, wherein the light source chamber (23a) is located at the front side of the control chamber (23b), and the front side of the housing (23) is formed in an inclined structure which gradually converges inward from top to bottom.

6. A visual device according to claim 1, wherein said display (21) is rotatably mounted on top of said housing (23).

7. Laryngeal mask, characterised in that it comprises a laryngeal mask body (10) and a laryngeal mask imaging device according to any one of claims 1-6, the laryngeal mask body (10) comprising a tube (12), a sealing seat (13) and a light guide (11), the sealing seat (13) being connected to the distal end of the tube (12), the proximal end of the tube (12) being detachably connected to the bottom of the housing (23); the light guide piece (11) and the image tube (24) are arranged at intervals, an image cavity channel and a light guide cavity channel are formed in the laryngeal mask main body (10), the image tube (24) can be inserted into the image cavity channel in an inserting and pulling mode, the light guide piece (11) is preset in the light guide cavity, and the near end of the light guide piece (11) is in butt joint with the light emitting port (23c) so as to conduct light from the light emitting port (23c) to the far end of the light guide piece (11).

8. A laryngeal mask according to claim 7, characterised in that the light guide (11) is formed as a plastic optical fibre.

9. The laryngeal mask according to claim 7, characterised in that the image means comprise a connection platform (231) extending laterally outwards from both sides of the bottom of the housing (23), a snap-fit structure provided at the bottom of the connection platform (231), and a pressing portion (232) provided laterally outside the connection platform (231); the laryngeal mask main body (10) comprises a connecting piece (16) formed at the near end of the catheter (12), a clamping groove (16a) is formed in the connecting piece (16), and the pressing portion (232) drives the clamping structure and the clamping groove (16a) to be locked or unlocked.

10. The laryngeal mask according to claim 7, characterised in that the distal end of the light guide (11) and the distal end of the viewing tube (24) both extend into the sealing seat (13), the distal end of the light guide (11) being isolated from the space in the sealing seat (13), the distal end of the viewing tube (24) being isolated from the space in the sealing seat (13).

11. The laryngeal mask according to claim 10, characterised in that the distal end of the image tube (24) is capable of bringing the distal end of the light guide (11) to bend and reposition simultaneously.